/* Jim - A small embeddable Tcl interpreter * * Copyright 2005 Salvatore Sanfilippo * Copyright 2005 Clemens Hintze * Copyright 2005 patthoyts - Pat Thoyts * Copyright 2008,2009 oharboe - Øyvind Harboe - oyvind.harboe@zylin.com * Copyright 2008 Andrew Lunn * Copyright 2008 Duane Ellis * Copyright 2008 Uwe Klein * Copyright 2008 Steve Bennett * Copyright 2009 Nico Coesel * Copyright 2009 Zachary T Welch zw@superlucidity.net * Copyright 2009 David Brownell * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE JIM TCL PROJECT ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * JIM TCL PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * The views and conclusions contained in the software and documentation * are those of the authors and should not be interpreted as representing * official policies, either expressed or implied, of the Jim Tcl Project. **/ #define JIM_OPTIMIZATION /* comment to avoid optimizations and reduce size */ #include #include #include #include #include #include #include #include #include #include #include #include #include "jim.h" #include "jimautoconf.h" #include "utf8.h" #ifdef HAVE_BACKTRACE #include #endif /* For INFINITY, even if math functions are not enabled */ #include /*#define DEBUG_SHOW_SCRIPT*/ /*#define DEBUG_SHOW_SCRIPT_TOKENS*/ /*#define DEBUG_SHOW_SUBST*/ /*#define DEBUG_SHOW_EXPR*/ /*#define JIM_DEBUG_GC*/ /*#define JIM_DEBUG_COMMAND*/ #if defined(DEBUG_SHOW_SCRIPT) || defined(DEBUG_SHOW_SCRIPT_TOKENS) || defined(DEBUG_SHOW_EXPR) || defined(DEBUG_SHOW_SUBST) static const char *tt_name(int type); #endif /* ----------------------------------------------------------------------------- * Global variables * ---------------------------------------------------------------------------*/ /* A shared empty string for the objects string representation. * Jim_InvalidateStringRep knows about it and doesn't try to free it. */ static char JimEmptyStringRep[] = ""; /* ----------------------------------------------------------------------------- * Required prototypes of not exported functions * ---------------------------------------------------------------------------*/ static void JimChangeCallFrameId(Jim_Interp *interp, Jim_CallFrame *cf); static void JimFreeCallFrame(Jim_Interp *interp, Jim_CallFrame *cf, int flags); static int ListSetIndex(Jim_Interp *interp, Jim_Obj *listPtr, int listindex, Jim_Obj *newObjPtr, int flags); static Jim_Obj *JimExpandDictSugar(Jim_Interp *interp, Jim_Obj *objPtr); static void SetDictSubstFromAny(Jim_Interp *interp, Jim_Obj *objPtr); static void JimSetFailedEnumResult(Jim_Interp *interp, const char *arg, const char *badtype, const char *prefix, const char *const *tablePtr, const char *name); static void JimDeleteLocalProcs(Jim_Interp *interp); static int JimCallProcedure(Jim_Interp *interp, Jim_Cmd *cmd, const char *filename, int linenr, int argc, Jim_Obj *const *argv); static int JimEvalObjVector(Jim_Interp *interp, int objc, Jim_Obj *const *objv, const char *filename, int linenr); static int JimGetWideNoErr(Jim_Interp *interp, Jim_Obj *objPtr, jim_wide * widePtr); static int JimSign(jim_wide w); static const Jim_HashTableType JimVariablesHashTableType; /* Fast access to the int (wide) value of an object which is known to be of int type */ #define JimWideValue(objPtr) (objPtr)->internalRep.wideValue static int utf8_tounicode_case(const char *s, int *uc, int upper) { int l = utf8_tounicode(s, uc); if (upper) { *uc = utf8_upper(*uc); } return l; } /* These can be used in addition to JIM_CASESENS/JIM_NOCASE */ #define JIM_CHARSET_SCAN 2 #define JIM_CHARSET_GLOB 0 /** * pattern points to a string like "[^a-z\ub5]" * * The pattern may contain trailing chars, which are ignored. * * The pattern is matched against unicode char 'c'. * * If (flags & JIM_NOCASE), case is ignored when matching. * If (flags & JIM_CHARSET_SCAN), the considers ^ and ] special at the start * of the charset, per scan, rather than glob/string match. * * If the unicode char 'c' matches that set, returns a pointer to the ']' character, * or the null character if the ']' is missing. * * Returns NULL on no match. */ static const char *JimCharsetMatch(const char *pattern, int c, int flags) { int not = 0; int pchar; int match = 0; int nocase = 0; if (flags & JIM_NOCASE) { nocase++; c = utf8_upper(c); } if (flags & JIM_CHARSET_SCAN) { if (*pattern == '^') { not++; pattern++; } /* Special case. If the first char is ']', it is part of the set */ if (*pattern == ']') { goto first; } } while (*pattern && *pattern != ']') { /* Exact match */ if (pattern[0] == '\\') { first: pattern += utf8_tounicode_case(pattern, &pchar, nocase); } else { /* Is this a range? a-z */ int start; int end; pattern += utf8_tounicode_case(pattern, &start, nocase); if (pattern[0] == '-' && pattern[1]) { /* skip '-' */ pattern += utf8_tounicode(pattern, &pchar); pattern += utf8_tounicode_case(pattern, &end, nocase); /* Handle reversed range too */ if ((c >= start && c <= end) || (c >= end && c <= start)) { match = 1; } continue; } pchar = start; } if (pchar == c) { match = 1; } } if (not) { match = !match; } return match ? pattern : NULL; } /* Glob-style pattern matching. */ /* Note: string *must* be valid UTF-8 sequences * slen is a char length, not byte counts. */ static int GlobMatch(const char *pattern, const char *string, int nocase) { int c; int pchar; while (*pattern) { switch (pattern[0]) { case '*': while (pattern[1] == '*') { pattern++; } pattern++; if (!pattern[0]) { return 1; /* match */ } while (*string) { /* Recursive call - Does the remaining pattern match anywhere? */ if (GlobMatch(pattern, string, nocase)) return 1; /* match */ string += utf8_tounicode(string, &c); } return 0; /* no match */ case '?': if (!*string) return 0; /* no match */ string += utf8_tounicode(string, &c); break; case '[': { string += utf8_tounicode(string, &c); pattern = JimCharsetMatch(pattern + 1, c, nocase ? JIM_NOCASE : 0); if (!pattern) { return 0; } if (!*pattern) { /* Ran out of pattern (no ']') */ continue; } break; } case '\\': if (pattern[1]) { pattern++; } /* fall through */ default: string += utf8_tounicode_case(string, &c, nocase); utf8_tounicode_case(pattern, &pchar, nocase); if (pchar != c) { return 0; } break; } pattern += utf8_tounicode_case(pattern, &pchar, nocase); if (!*string) { while (*pattern == '*') { pattern++; } break; } } if (!*pattern && !*string) { return 1; } return 0; } static int JimStringMatch(Jim_Interp *interp, Jim_Obj *patternObj, const char *string, int nocase) { return GlobMatch(Jim_GetString(patternObj, NULL), string, nocase); } /** * string comparison works on binary data. * * Note that the lengths are byte lengths, not char lengths. */ static int JimStringCompare(const char *s1, int l1, const char *s2, int l2) { if (l1 < l2) { return memcmp(s1, s2, l1) <= 0 ? -1 : 1; } else if (l2 < l1) { return memcmp(s1, s2, l2) >= 0 ? 1 : -1; } else { return JimSign(memcmp(s1, s2, l1)); } } /** * No-case version. * * If maxchars is -1, compares to end of string. * Otherwise compares at most 'maxchars' characters. */ static int JimStringCompareNoCase(const char *s1, const char *s2, int maxchars) { while (*s1 && *s2 && maxchars) { int c1, c2; s1 += utf8_tounicode_case(s1, &c1, 1); s2 += utf8_tounicode_case(s2, &c2, 1); if (c1 != c2) { return JimSign(c1 - c2); } maxchars--; } if (!maxchars) { return 0; } /* One string or both terminated */ if (*s1) { return 1; } if (*s2) { return -1; } return 0; } /* Search 's1' inside 's2', starting to search from char 'index' of 's2'. * The index of the first occurrence of s1 in s2 is returned. * If s1 is not found inside s2, -1 is returned. */ static int JimStringFirst(const char *s1, int l1, const char *s2, int l2, int idx) { int i; int l1bytelen; if (!l1 || !l2 || l1 > l2) { return -1; } if (idx < 0) idx = 0; s2 += utf8_index(s2, idx); l1bytelen = utf8_index(s1, l1); for (i = idx; i <= l2 - l1; i++) { int c; if (memcmp(s2, s1, l1bytelen) == 0) { return i; } s2 += utf8_tounicode(s2, &c); } return -1; } /** * Note: Lengths and return value are in bytes, not chars. */ static int JimStringLast(const char *s1, int l1, const char *s2, int l2) { const char *p; if (!l1 || !l2 || l1 > l2) return -1; /* Now search for the needle */ for (p = s2 + l2 - 1; p != s2 - 1; p--) { if (*p == *s1 && memcmp(s1, p, l1) == 0) { return p - s2; } } return -1; } #ifdef JIM_UTF8 /** * Note: Lengths and return value are in chars. */ static int JimStringLastUtf8(const char *s1, int l1, const char *s2, int l2) { int n = JimStringLast(s1, utf8_index(s1, l1), s2, utf8_index(s2, l2)); if (n > 0) { n = utf8_strlen(s2, n); } return n; } #endif int Jim_WideToString(char *buf, jim_wide wideValue) { const char *fmt = "%" JIM_WIDE_MODIFIER; return sprintf(buf, fmt, wideValue); } /** * After an strtol()/strtod()-like conversion, * check whether something was converted and that * the only thing left is white space. * * Returns JIM_OK or JIM_ERR. */ static int JimCheckConversion(const char *str, const char *endptr) { if (str[0] == '\0' || str == endptr) { return JIM_ERR; } if (endptr[0] != '\0') { while (*endptr) { if (!isspace(UCHAR(*endptr))) { return JIM_ERR; } endptr++; } } return JIM_OK; } int Jim_StringToWide(const char *str, jim_wide * widePtr, int base) { char *endptr; *widePtr = strtoull(str, &endptr, base); return JimCheckConversion(str, endptr); } int Jim_DoubleToString(char *buf, double doubleValue) { int len; char *buf0 = buf; len = sprintf(buf, "%.12g", doubleValue); /* Add a final ".0" if it's a number. But not * for NaN or InF */ while (*buf) { if (*buf == '.' || isalpha(UCHAR(*buf))) { /* inf -> Inf, nan -> Nan */ if (*buf == 'i' || *buf == 'n') { *buf = toupper(UCHAR(*buf)); } if (*buf == 'I') { /* Infinity -> Inf */ buf[3] = '\0'; len = buf - buf0 + 3; } return len; } buf++; } *buf++ = '.'; *buf++ = '0'; *buf = '\0'; return len + 2; } int Jim_StringToDouble(const char *str, double *doublePtr) { char *endptr; /* Callers can check for underflow via ERANGE */ errno = 0; *doublePtr = strtod(str, &endptr); return JimCheckConversion(str, endptr); } static jim_wide JimPowWide(jim_wide b, jim_wide e) { jim_wide i, res = 1; if ((b == 0 && e != 0) || (e < 0)) return 0; for (i = 0; i < e; i++) { res *= b; } return res; } /* ----------------------------------------------------------------------------- * Special functions * ---------------------------------------------------------------------------*/ /* Note that 'interp' may be NULL if not available in the * context of the panic. It's only useful to get the error * file descriptor, it will default to stderr otherwise. */ void Jim_Panic(Jim_Interp *interp, const char *fmt, ...) { va_list ap; va_start(ap, fmt); /* * Send it here first.. Assuming STDIO still works */ fprintf(stderr, JIM_NL "JIM INTERPRETER PANIC: "); vfprintf(stderr, fmt, ap); fprintf(stderr, JIM_NL JIM_NL); va_end(ap); #ifdef HAVE_BACKTRACE { void *array[40]; int size, i; char **strings; size = backtrace(array, 40); strings = backtrace_symbols(array, size); for (i = 0; i < size; i++) fprintf(stderr, "[backtrace] %s" JIM_NL, strings[i]); fprintf(stderr, "[backtrace] Include the above lines and the output" JIM_NL); fprintf(stderr, "[backtrace] of 'nm ' in the bug report." JIM_NL); } #endif abort(); } /* ----------------------------------------------------------------------------- * Memory allocation * ---------------------------------------------------------------------------*/ void *Jim_Alloc(int size) { return malloc(size); } void Jim_Free(void *ptr) { free(ptr); } void *Jim_Realloc(void *ptr, int size) { return realloc(ptr, size); } char *Jim_StrDup(const char *s) { return strdup(s); } char *Jim_StrDupLen(const char *s, int l) { char *copy = Jim_Alloc(l + 1); memcpy(copy, s, l + 1); copy[l] = 0; /* Just to be sure, original could be substring */ return copy; } /* ----------------------------------------------------------------------------- * Time related functions * ---------------------------------------------------------------------------*/ /* Returns microseconds of CPU used since start. */ static jim_wide JimClock(void) { struct timeval tv; gettimeofday(&tv, NULL); return (jim_wide) tv.tv_sec * 1000000 + tv.tv_usec; } /* ----------------------------------------------------------------------------- * Hash Tables * ---------------------------------------------------------------------------*/ /* -------------------------- private prototypes ---------------------------- */ static int JimExpandHashTableIfNeeded(Jim_HashTable *ht); static unsigned int JimHashTableNextPower(unsigned int size); static int JimInsertHashEntry(Jim_HashTable *ht, const void *key); /* -------------------------- hash functions -------------------------------- */ /* Thomas Wang's 32 bit Mix Function */ unsigned int Jim_IntHashFunction(unsigned int key) { key += ~(key << 15); key ^= (key >> 10); key += (key << 3); key ^= (key >> 6); key += ~(key << 11); key ^= (key >> 16); return key; } /* Generic hash function (we are using to multiply by 9 and add the byte * as Tcl) */ unsigned int Jim_GenHashFunction(const unsigned char *buf, int len) { unsigned int h = 0; while (len--) h += (h << 3) + *buf++; return h; } /* ----------------------------- API implementation ------------------------- */ /* reset a hashtable already initialized with ht_init(). * NOTE: This function should only called by ht_destroy(). */ static void JimResetHashTable(Jim_HashTable *ht) { ht->table = NULL; ht->size = 0; ht->sizemask = 0; ht->used = 0; ht->collisions = 0; } /* Initialize the hash table */ int Jim_InitHashTable(Jim_HashTable *ht, const Jim_HashTableType *type, void *privDataPtr) { JimResetHashTable(ht); ht->type = type; ht->privdata = privDataPtr; return JIM_OK; } /* Resize the table to the minimal size that contains all the elements, * but with the invariant of a USER/BUCKETS ration near to <= 1 */ int Jim_ResizeHashTable(Jim_HashTable *ht) { int minimal = ht->used; if (minimal < JIM_HT_INITIAL_SIZE) minimal = JIM_HT_INITIAL_SIZE; return Jim_ExpandHashTable(ht, minimal); } /* Expand or create the hashtable */ int Jim_ExpandHashTable(Jim_HashTable *ht, unsigned int size) { Jim_HashTable n; /* the new hashtable */ unsigned int realsize = JimHashTableNextPower(size), i; /* the size is invalid if it is smaller than the number of * elements already inside the hashtable */ if (ht->used >= size) return JIM_ERR; Jim_InitHashTable(&n, ht->type, ht->privdata); n.size = realsize; n.sizemask = realsize - 1; n.table = Jim_Alloc(realsize * sizeof(Jim_HashEntry *)); /* Initialize all the pointers to NULL */ memset(n.table, 0, realsize * sizeof(Jim_HashEntry *)); /* Copy all the elements from the old to the new table: * note that if the old hash table is empty ht->size is zero, * so Jim_ExpandHashTable just creates an hash table. */ n.used = ht->used; for (i = 0; i < ht->size && ht->used > 0; i++) { Jim_HashEntry *he, *nextHe; if (ht->table[i] == NULL) continue; /* For each hash entry on this slot... */ he = ht->table[i]; while (he) { unsigned int h; nextHe = he->next; /* Get the new element index */ h = Jim_HashKey(ht, he->key) & n.sizemask; he->next = n.table[h]; n.table[h] = he; ht->used--; /* Pass to the next element */ he = nextHe; } } assert(ht->used == 0); Jim_Free(ht->table); /* Remap the new hashtable in the old */ *ht = n; return JIM_OK; } /* Add an element to the target hash table */ int Jim_AddHashEntry(Jim_HashTable *ht, const void *key, void *val) { int idx; Jim_HashEntry *entry; /* Get the index of the new element, or -1 if * the element already exists. */ if ((idx = JimInsertHashEntry(ht, key)) == -1) return JIM_ERR; /* Allocates the memory and stores key */ entry = Jim_Alloc(sizeof(*entry)); entry->next = ht->table[idx]; ht->table[idx] = entry; /* Set the hash entry fields. */ Jim_SetHashKey(ht, entry, key); Jim_SetHashVal(ht, entry, val); ht->used++; return JIM_OK; } /* Add an element, discarding the old if the key already exists */ int Jim_ReplaceHashEntry(Jim_HashTable *ht, const void *key, void *val) { Jim_HashEntry *entry; /* Try to add the element. If the key * does not exists Jim_AddHashEntry will suceed. */ if (Jim_AddHashEntry(ht, key, val) == JIM_OK) return JIM_OK; /* It already exists, get the entry */ entry = Jim_FindHashEntry(ht, key); /* Free the old value and set the new one */ Jim_FreeEntryVal(ht, entry); Jim_SetHashVal(ht, entry, val); return JIM_OK; } /* Search and remove an element */ int Jim_DeleteHashEntry(Jim_HashTable *ht, const void *key) { unsigned int h; Jim_HashEntry *he, *prevHe; if (ht->size == 0) return JIM_ERR; h = Jim_HashKey(ht, key) & ht->sizemask; he = ht->table[h]; prevHe = NULL; while (he) { if (Jim_CompareHashKeys(ht, key, he->key)) { /* Unlink the element from the list */ if (prevHe) prevHe->next = he->next; else ht->table[h] = he->next; Jim_FreeEntryKey(ht, he); Jim_FreeEntryVal(ht, he); Jim_Free(he); ht->used--; return JIM_OK; } prevHe = he; he = he->next; } return JIM_ERR; /* not found */ } /* Destroy an entire hash table */ int Jim_FreeHashTable(Jim_HashTable *ht) { unsigned int i; /* Free all the elements */ for (i = 0; i < ht->size && ht->used > 0; i++) { Jim_HashEntry *he, *nextHe; if ((he = ht->table[i]) == NULL) continue; while (he) { nextHe = he->next; Jim_FreeEntryKey(ht, he); Jim_FreeEntryVal(ht, he); Jim_Free(he); ht->used--; he = nextHe; } } /* Free the table and the allocated cache structure */ Jim_Free(ht->table); /* Re-initialize the table */ JimResetHashTable(ht); return JIM_OK; /* never fails */ } Jim_HashEntry *Jim_FindHashEntry(Jim_HashTable *ht, const void *key) { Jim_HashEntry *he; unsigned int h; if (ht->size == 0) return NULL; h = Jim_HashKey(ht, key) & ht->sizemask; he = ht->table[h]; while (he) { if (Jim_CompareHashKeys(ht, key, he->key)) return he; he = he->next; } return NULL; } Jim_HashTableIterator *Jim_GetHashTableIterator(Jim_HashTable *ht) { Jim_HashTableIterator *iter = Jim_Alloc(sizeof(*iter)); iter->ht = ht; iter->index = -1; iter->entry = NULL; iter->nextEntry = NULL; return iter; } Jim_HashEntry *Jim_NextHashEntry(Jim_HashTableIterator *iter) { while (1) { if (iter->entry == NULL) { iter->index++; if (iter->index >= (signed)iter->ht->size) break; iter->entry = iter->ht->table[iter->index]; } else { iter->entry = iter->nextEntry; } if (iter->entry) { /* We need to save the 'next' here, the iterator user * may delete the entry we are returning. */ iter->nextEntry = iter->entry->next; return iter->entry; } } return NULL; } /* ------------------------- private functions ------------------------------ */ /* Expand the hash table if needed */ static int JimExpandHashTableIfNeeded(Jim_HashTable *ht) { /* If the hash table is empty expand it to the intial size, * if the table is "full" dobule its size. */ if (ht->size == 0) return Jim_ExpandHashTable(ht, JIM_HT_INITIAL_SIZE); if (ht->size == ht->used) return Jim_ExpandHashTable(ht, ht->size * 2); return JIM_OK; } /* Our hash table capability is a power of two */ static unsigned int JimHashTableNextPower(unsigned int size) { unsigned int i = JIM_HT_INITIAL_SIZE; if (size >= 2147483648U) return 2147483648U; while (1) { if (i >= size) return i; i *= 2; } } /* Returns the index of a free slot that can be populated with * an hash entry for the given 'key'. * If the key already exists, -1 is returned. */ static int JimInsertHashEntry(Jim_HashTable *ht, const void *key) { unsigned int h; Jim_HashEntry *he; /* Expand the hashtable if needed */ if (JimExpandHashTableIfNeeded(ht) == JIM_ERR) return -1; /* Compute the key hash value */ h = Jim_HashKey(ht, key) & ht->sizemask; /* Search if this slot does not already contain the given key */ he = ht->table[h]; while (he) { if (Jim_CompareHashKeys(ht, key, he->key)) return -1; he = he->next; } return h; } /* ----------------------- StringCopy Hash Table Type ------------------------*/ static unsigned int JimStringCopyHTHashFunction(const void *key) { return Jim_GenHashFunction(key, strlen(key)); } static const void *JimStringCopyHTKeyDup(void *privdata, const void *key) { int len = strlen(key); char *copy = Jim_Alloc(len + 1); JIM_NOTUSED(privdata); memcpy(copy, key, len); copy[len] = '\0'; return copy; } static void *JimStringKeyValCopyHTValDup(void *privdata, const void *val) { int len = strlen(val); char *copy = Jim_Alloc(len + 1); JIM_NOTUSED(privdata); memcpy(copy, val, len); copy[len] = '\0'; return copy; } static int JimStringCopyHTKeyCompare(void *privdata, const void *key1, const void *key2) { JIM_NOTUSED(privdata); return strcmp(key1, key2) == 0; } static void JimStringCopyHTKeyDestructor(void *privdata, const void *key) { JIM_NOTUSED(privdata); Jim_Free((void *)key); /* ATTENTION: const cast */ } static void JimStringKeyValCopyHTValDestructor(void *privdata, void *val) { JIM_NOTUSED(privdata); Jim_Free((void *)val); /* ATTENTION: const cast */ } #if 0 static Jim_HashTableType JimStringCopyHashTableType = { JimStringCopyHTHashFunction, /* hash function */ JimStringCopyHTKeyDup, /* key dup */ NULL, /* val dup */ JimStringCopyHTKeyCompare, /* key compare */ JimStringCopyHTKeyDestructor, /* key destructor */ NULL /* val destructor */ }; #endif /* This is like StringCopy but does not auto-duplicate the key. * It's used for intepreter's shared strings. */ static const Jim_HashTableType JimSharedStringsHashTableType = { JimStringCopyHTHashFunction, /* hash function */ NULL, /* key dup */ NULL, /* val dup */ JimStringCopyHTKeyCompare, /* key compare */ JimStringCopyHTKeyDestructor, /* key destructor */ NULL /* val destructor */ }; /* This is like StringCopy but also automatically handle dynamic * allocated C strings as values. */ static const Jim_HashTableType JimStringKeyValCopyHashTableType = { JimStringCopyHTHashFunction, /* hash function */ JimStringCopyHTKeyDup, /* key dup */ JimStringKeyValCopyHTValDup, /* val dup */ JimStringCopyHTKeyCompare, /* key compare */ JimStringCopyHTKeyDestructor, /* key destructor */ JimStringKeyValCopyHTValDestructor, /* val destructor */ }; typedef struct AssocDataValue { Jim_InterpDeleteProc *delProc; void *data; } AssocDataValue; static void JimAssocDataHashTableValueDestructor(void *privdata, void *data) { AssocDataValue *assocPtr = (AssocDataValue *) data; if (assocPtr->delProc != NULL) assocPtr->delProc((Jim_Interp *)privdata, assocPtr->data); Jim_Free(data); } static const Jim_HashTableType JimAssocDataHashTableType = { JimStringCopyHTHashFunction, /* hash function */ JimStringCopyHTKeyDup, /* key dup */ NULL, /* val dup */ JimStringCopyHTKeyCompare, /* key compare */ JimStringCopyHTKeyDestructor, /* key destructor */ JimAssocDataHashTableValueDestructor /* val destructor */ }; /* ----------------------------------------------------------------------------- * Stack - This is a simple generic stack implementation. It is used for * example in the 'expr' expression compiler. * ---------------------------------------------------------------------------*/ void Jim_InitStack(Jim_Stack *stack) { stack->len = 0; stack->maxlen = 0; stack->vector = NULL; } void Jim_FreeStack(Jim_Stack *stack) { Jim_Free(stack->vector); } int Jim_StackLen(Jim_Stack *stack) { return stack->len; } void Jim_StackPush(Jim_Stack *stack, void *element) { int neededLen = stack->len + 1; if (neededLen > stack->maxlen) { stack->maxlen = neededLen < 20 ? 20 : neededLen * 2; stack->vector = Jim_Realloc(stack->vector, sizeof(void *) * stack->maxlen); } stack->vector[stack->len] = element; stack->len++; } void *Jim_StackPop(Jim_Stack *stack) { if (stack->len == 0) return NULL; stack->len--; return stack->vector[stack->len]; } void *Jim_StackPeek(Jim_Stack *stack) { if (stack->len == 0) return NULL; return stack->vector[stack->len - 1]; } void Jim_FreeStackElements(Jim_Stack *stack, void (*freeFunc) (void *ptr)) { int i; for (i = 0; i < stack->len; i++) freeFunc(stack->vector[i]); } /* ----------------------------------------------------------------------------- * Parser * ---------------------------------------------------------------------------*/ /* Token types */ #define JIM_TT_NONE 0 /* No token returned */ #define JIM_TT_STR 1 /* simple string */ #define JIM_TT_ESC 2 /* string that needs escape chars conversion */ #define JIM_TT_VAR 3 /* var substitution */ #define JIM_TT_DICTSUGAR 4 /* Syntax sugar for [dict get], $foo(bar) */ #define JIM_TT_CMD 5 /* command substitution */ /* Note: Keep these three together for TOKEN_IS_SEP() */ #define JIM_TT_SEP 6 /* word separator. arg is # of tokens. -ve if {*} */ #define JIM_TT_EOL 7 /* line separator */ #define JIM_TT_EOF 8 /* end of script */ #define JIM_TT_LINE 9 /* special 'start-of-line' token. arg is # of arguments to the command. -ve if {*} */ #define JIM_TT_WORD 10 /* special 'start-of-word' token. arg is # of tokens to combine. -ve if {*} */ /* Additional token types needed for expressions */ #define JIM_TT_SUBEXPR_START 11 #define JIM_TT_SUBEXPR_END 12 #define JIM_TT_EXPR_INT 13 #define JIM_TT_EXPR_DOUBLE 14 /* Operator token types start here */ #define JIM_TT_EXPR_OP 15 #define TOKEN_IS_SEP(type) (type >= JIM_TT_SEP && type <= JIM_TT_EOF) /* Parser states */ #define JIM_PS_DEF 0 /* Default state */ #define JIM_PS_QUOTE 1 /* Inside "" */ #define JIM_PS_DICTSUGAR 2 /* Tokenising abc(def) into 4 separate tokens */ /* Parser context structure. The same context is used both to parse * Tcl scripts and lists. */ struct JimParserCtx { const char *prg; /* Program text */ const char *p; /* Pointer to the point of the program we are parsing */ int len; /* Left length of 'prg' */ int linenr; /* Current line number */ const char *tstart; const char *tend; /* Returned token is at tstart-tend in 'prg'. */ int tline; /* Line number of the returned token */ int tt; /* Token type */ int eof; /* Non zero if EOF condition is true. */ int state; /* Parser state */ int comment; /* Non zero if the next chars may be a comment. */ char missing; /* At end of parse, ' ' if complete, '{' if braces incomplete, '"' if quotes incomplete */ }; #define JimParserEof(c) ((c)->eof) #define JimParserTstart(c) ((c)->tstart) #define JimParserTend(c) ((c)->tend) #define JimParserTtype(c) ((c)->tt) #define JimParserTline(c) ((c)->tline) static int JimParseScript(struct JimParserCtx *pc); static int JimParseSep(struct JimParserCtx *pc); static int JimParseEol(struct JimParserCtx *pc); static int JimParseCmd(struct JimParserCtx *pc); static int JimParseVar(struct JimParserCtx *pc); static int JimParseBrace(struct JimParserCtx *pc); static int JimParseStr(struct JimParserCtx *pc); static int JimParseComment(struct JimParserCtx *pc); static Jim_Obj *JimParserGetTokenObj(Jim_Interp *interp, struct JimParserCtx *pc); /* Initialize a parser context. * 'prg' is a pointer to the program text, linenr is the line * number of the first line contained in the program. */ static void JimParserInit(struct JimParserCtx *pc, const char *prg, int len, int linenr) { pc->prg = prg; pc->p = prg; pc->len = len; pc->tstart = NULL; pc->tend = NULL; pc->tline = 0; pc->tt = JIM_TT_NONE; pc->eof = 0; pc->state = JIM_PS_DEF; pc->linenr = linenr; pc->comment = 1; pc->missing = ' '; } static int JimParseScript(struct JimParserCtx *pc) { while (1) { /* the while is used to reiterate with continue if needed */ if (!pc->len) { pc->tstart = pc->p; pc->tend = pc->p - 1; pc->tline = pc->linenr; pc->tt = JIM_TT_EOL; pc->eof = 1; return JIM_OK; } switch (*(pc->p)) { case '\\': if (*(pc->p + 1) == '\n') return JimParseSep(pc); else { pc->comment = 0; return JimParseStr(pc); } break; case ' ': case '\t': case '\r': if (pc->state == JIM_PS_DEF) return JimParseSep(pc); else { pc->comment = 0; return JimParseStr(pc); } break; case '\n': case ';': pc->comment = 1; if (pc->state == JIM_PS_DEF) return JimParseEol(pc); else return JimParseStr(pc); break; case '[': pc->comment = 0; return JimParseCmd(pc); break; case '$': pc->comment = 0; if (JimParseVar(pc) == JIM_ERR) { pc->tstart = pc->tend = pc->p++; pc->len--; pc->tline = pc->linenr; pc->tt = JIM_TT_STR; return JIM_OK; } else return JIM_OK; break; case '#': if (pc->comment) { JimParseComment(pc); continue; } else { return JimParseStr(pc); } default: pc->comment = 0; return JimParseStr(pc); break; } return JIM_OK; } } static int JimParseSep(struct JimParserCtx *pc) { pc->tstart = pc->p; pc->tline = pc->linenr; while (*pc->p == ' ' || *pc->p == '\t' || *pc->p == '\r' || (*pc->p == '\\' && *(pc->p + 1) == '\n')) { if (*pc->p == '\\') { pc->p++; pc->len--; pc->linenr++; } pc->p++; pc->len--; } pc->tend = pc->p - 1; pc->tt = JIM_TT_SEP; return JIM_OK; } static int JimParseEol(struct JimParserCtx *pc) { pc->tstart = pc->p; pc->tline = pc->linenr; while (*pc->p == ' ' || *pc->p == '\n' || *pc->p == '\t' || *pc->p == '\r' || *pc->p == ';') { if (*pc->p == '\n') pc->linenr++; pc->p++; pc->len--; } pc->tend = pc->p - 1; pc->tt = JIM_TT_EOL; return JIM_OK; } static int JimParseCmd(struct JimParserCtx *pc) { int level = 1; int quoted = 0; pc->tstart = ++pc->p; pc->len--; pc->tline = pc->linenr; while (pc->len) { if (*pc->p == '\\' && pc->len > 1) { if (pc->p[1] == '\n') pc->linenr++; pc->p += 2; pc->len -= 2; continue; } else if (*pc->p == '"') { quoted = !quoted; } else if (!quoted) { if (*pc->p == '[') { level++; } else if (*pc->p == ']') { level--; if (!level) break; } else if (*pc->p == '{') { /* Save and restore tstart and tline across JimParseBrace() */ const char * tstart = pc->tstart; int tline = pc->tline; JimParseBrace(pc); pc->tstart = tstart; pc->tline = tline; continue; } } if (*pc->p == '\n') { pc->linenr++; } pc->p++; pc->len--; } pc->tend = pc->p - 1; pc->tt = JIM_TT_CMD; if (*pc->p == ']') { pc->p++; pc->len--; } return JIM_OK; } static int JimParseVar(struct JimParserCtx *pc) { int brace = 0, stop = 0; int ttype = JIM_TT_VAR; pc->tstart = ++pc->p; pc->len--; /* skip the $ */ pc->tline = pc->linenr; if (*pc->p == '{') { pc->tstart = ++pc->p; pc->len--; brace = 1; } if (brace) { while (!stop) { if (*pc->p == '}' || pc->len == 0) { pc->tend = pc->p - 1; stop = 1; if (pc->len == 0) break; } else if (*pc->p == '\n') pc->linenr++; pc->p++; pc->len--; } } else { while (!stop) { /* Skip double colon, but not single colon! */ if (pc->p[0] == ':' && pc->len > 1 && pc->p[1] == ':') { pc->p += 2; pc->len -= 2; continue; } if (!((*pc->p >= 'a' && *pc->p <= 'z') || (*pc->p >= 'A' && *pc->p <= 'Z') || (*pc->p >= '0' && *pc->p <= '9') || *pc->p == '_')) stop = 1; else { pc->p++; pc->len--; } } /* Parse [dict get] syntax sugar. */ if (*pc->p == '(') { int count = 1; const char *paren = pc->p; while (count && pc->len) { pc->p++; pc->len--; if (*pc->p == '\\' && pc->len >= 2) { pc->p += 2; pc->len -= 2; } else if (*pc->p == '(') { count++; } else if (*pc->p == ')') { count--; } } if (count == 0) { if (*pc->p != '\0') { pc->p++; pc->len--; } ttype = JIM_TT_DICTSUGAR; } else { /* Missing '(', so back up */ pc->len += pc->p - paren; pc->p = paren; } } pc->tend = pc->p - 1; } /* Check if we parsed just the '$' character. * That's not a variable so an error is returned * to tell the state machine to consider this '$' just * a string. */ if (pc->tstart == pc->p) { pc->p--; pc->len++; return JIM_ERR; } pc->tt = ttype; return JIM_OK; } static int JimParseBrace(struct JimParserCtx *pc) { int level = 1; pc->tstart = ++pc->p; pc->len--; pc->tline = pc->linenr; while (1) { if (*pc->p == '\\' && pc->len >= 2) { pc->p++; pc->len--; if (*pc->p == '\n') pc->linenr++; } else if (*pc->p == '{') { level++; } else if (pc->len == 0 || *pc->p == '}') { if (pc->len == 0) { pc->missing = '{'; /*printf("Missing brace at line %d, opened on line %d\n", pc->linenr, pc->tline);*/ } level--; if (pc->len == 0 || level == 0) { pc->tend = pc->p - 1; if (pc->len != 0) { pc->p++; pc->len--; } pc->tt = JIM_TT_STR; return JIM_OK; } } else if (*pc->p == '\n') { pc->linenr++; } pc->p++; pc->len--; } return JIM_OK; /* unreached */ } static int JimParseStr(struct JimParserCtx *pc) { int newword = (pc->tt == JIM_TT_SEP || pc->tt == JIM_TT_EOL || pc->tt == JIM_TT_NONE || pc->tt == JIM_TT_STR); if (newword && *pc->p == '{') { return JimParseBrace(pc); } else if (newword && *pc->p == '"') { pc->state = JIM_PS_QUOTE; pc->p++; pc->len--; } pc->tstart = pc->p; pc->tline = pc->linenr; while (1) { if (pc->len == 0) { if (pc->state == JIM_PS_QUOTE) { pc->missing = '"'; } pc->tend = pc->p - 1; pc->tt = JIM_TT_ESC; return JIM_OK; } switch (*pc->p) { case '\\': if (pc->state == JIM_PS_DEF && *(pc->p + 1) == '\n') { pc->tend = pc->p - 1; pc->tt = JIM_TT_ESC; return JIM_OK; } if (pc->len >= 2) { if (*(pc->p + 1) == '\n') { pc->linenr++; } pc->p++; pc->len--; } break; case '(': /* If the following token is not '$' just keep going */ if (pc->len > 1 && pc->p[1] != '$') { break; } case ')': /* Only need a separate ')' token if the previous was a var */ if (*pc->p == '(' || pc->tt == JIM_TT_VAR) { if (pc->p == pc->tstart) { /* At the start of the token, so just return this char */ pc->p++; pc->len--; } pc->tend = pc->p - 1; pc->tt = JIM_TT_ESC; return JIM_OK; } break; case '$': case '[': pc->tend = pc->p - 1; pc->tt = JIM_TT_ESC; return JIM_OK; case ' ': case '\t': case '\n': case '\r': case ';': if (pc->state == JIM_PS_DEF) { pc->tend = pc->p - 1; pc->tt = JIM_TT_ESC; return JIM_OK; } else if (*pc->p == '\n') { pc->linenr++; } break; case '"': if (pc->state == JIM_PS_QUOTE) { pc->tend = pc->p - 1; pc->tt = JIM_TT_ESC; pc->p++; pc->len--; pc->state = JIM_PS_DEF; return JIM_OK; } break; } pc->p++; pc->len--; } return JIM_OK; /* unreached */ } static int JimParseComment(struct JimParserCtx *pc) { while (*pc->p) { if (*pc->p == '\n') { pc->linenr++; if (*(pc->p - 1) != '\\') { pc->p++; pc->len--; return JIM_OK; } } pc->p++; pc->len--; } return JIM_OK; } /* xdigitval and odigitval are helper functions for JimEscape() */ static int xdigitval(int c) { if (c >= '0' && c <= '9') return c - '0'; if (c >= 'a' && c <= 'f') return c - 'a' + 10; if (c >= 'A' && c <= 'F') return c - 'A' + 10; return -1; } static int odigitval(int c) { if (c >= '0' && c <= '7') return c - '0'; return -1; } /* Perform Tcl escape substitution of 's', storing the result * string into 'dest'. The escaped string is guaranteed to * be the same length or shorted than the source string. * Slen is the length of the string at 's', if it's -1 the string * length will be calculated by the function. * * The function returns the length of the resulting string. */ static int JimEscape(char *dest, const char *s, int slen) { char *p = dest; int i, len; if (slen == -1) slen = strlen(s); for (i = 0; i < slen; i++) { switch (s[i]) { case '\\': switch (s[i + 1]) { case 'a': *p++ = 0x7; i++; break; case 'b': *p++ = 0x8; i++; break; case 'f': *p++ = 0xc; i++; break; case 'n': *p++ = 0xa; i++; break; case 'r': *p++ = 0xd; i++; break; case 't': *p++ = 0x9; i++; break; case 'u': /* A unicode sequence. Expect 1-4 hex chars and convert to utf-8. * An invalid sequence means simple an escaped 'u' */ { int val = 0; int k; i++; for (k = 0; k < 4; k++) { int c = xdigitval(s[i + k + 1]); if (c == -1) { break; } val = (val << 4) | c; } if (k) { /* Got a valid unicode sequence, so convert to utf-8 */ i += k; p += utf8_fromunicode(p, val); break; } /* Not a valid codepoint, just an escaped u */ *p++ = 'u'; } break; case 'v': *p++ = 0xb; i++; break; case '\0': *p++ = '\\'; i++; break; case '\n': *p++ = ' '; i++; break; default: if (s[i + 1] == 'x') { int val = 0; int c = xdigitval(s[i + 2]); if (c == -1) { *p++ = 'x'; i++; break; } val = c; c = xdigitval(s[i + 3]); if (c == -1) { *p++ = val; i += 2; break; } val = (val * 16) + c; *p++ = val; i += 3; break; } else if (s[i + 1] >= '0' && s[i + 1] <= '7') { int val = 0; int c = odigitval(s[i + 1]); val = c; c = odigitval(s[i + 2]); if (c == -1) { *p++ = val; i++; break; } val = (val * 8) + c; c = odigitval(s[i + 3]); if (c == -1) { *p++ = val; i += 2; break; } val = (val * 8) + c; *p++ = val; i += 3; } else { *p++ = s[i + 1]; i++; } break; } break; default: *p++ = s[i]; break; } } len = p - dest; *p = '\0'; return len; } /* Returns a dynamically allocated copy of the current token in the * parser context. The function performs conversion of escapes if * the token is of type JIM_TT_ESC. * * Note that after the conversion, tokens that are grouped with * braces in the source code, are always recognizable from the * identical string obtained in a different way from the type. * * For example the string: * * {*}$a * * will return as first token "*", of type JIM_TT_STR * * While the string: * * *$a * * will return as first token "*", of type JIM_TT_ESC */ static Jim_Obj *JimParserGetTokenObj(Jim_Interp *interp, struct JimParserCtx *pc) { const char *start, *end; char *token; int len; start = JimParserTstart(pc); end = JimParserTend(pc); if (start > end) { len = 0; token = Jim_Alloc(1); token[0] = '\0'; } else { len = (end - start) + 1; token = Jim_Alloc(len + 1); if (JimParserTtype(pc) != JIM_TT_ESC) { /* No escape conversion needed? Just copy it. */ memcpy(token, start, len); token[len] = '\0'; } else { /* Else convert the escape chars. */ len = JimEscape(token, start, len); } } return Jim_NewStringObjNoAlloc(interp, token, len); } /* Parses the given string to determine if it represents a complete script. * * This is useful for interactive shells implementation, for [info complete] * and is used by source/Jim_EvalFile(). * * If 'stateCharPtr' != NULL, the function stores ' ' on complete script, * '{' on scripts incomplete missing one or more '}' to be balanced. * '"' on scripts incomplete missing a '"' char. * * If the script is complete, 1 is returned, otherwise 0. */ int Jim_ScriptIsComplete(const char *s, int len, char *stateCharPtr) { struct JimParserCtx parser; JimParserInit(&parser, s, len, 1); while (!JimParserEof(&parser)) { JimParseScript(&parser); } if (stateCharPtr) { *stateCharPtr = parser.missing; } return parser.missing == ' '; } /* ----------------------------------------------------------------------------- * Tcl Lists parsing * ---------------------------------------------------------------------------*/ static int JimParseListSep(struct JimParserCtx *pc); static int JimParseListStr(struct JimParserCtx *pc); static int JimParseList(struct JimParserCtx *pc) { if (pc->len == 0) { pc->tstart = pc->tend = pc->p; pc->tline = pc->linenr; pc->tt = JIM_TT_EOL; pc->eof = 1; return JIM_OK; } switch (*pc->p) { case ' ': case '\n': case '\t': case '\r': if (pc->state == JIM_PS_DEF) return JimParseListSep(pc); else return JimParseListStr(pc); break; default: return JimParseListStr(pc); break; } return JIM_OK; } static int JimParseListSep(struct JimParserCtx *pc) { pc->tstart = pc->p; pc->tline = pc->linenr; while (*pc->p == ' ' || *pc->p == '\t' || *pc->p == '\r' || *pc->p == '\n') { if (*pc->p == '\n') { pc->linenr++; } pc->p++; pc->len--; } pc->tend = pc->p - 1; pc->tt = JIM_TT_SEP; return JIM_OK; } static int JimParseListStr(struct JimParserCtx *pc) { int newword = (pc->tt == JIM_TT_SEP || pc->tt == JIM_TT_EOL || pc->tt == JIM_TT_NONE); if (newword && *pc->p == '{') { return JimParseBrace(pc); } else if (newword && *pc->p == '"') { pc->state = JIM_PS_QUOTE; pc->p++; pc->len--; } pc->tstart = pc->p; pc->tline = pc->linenr; while (1) { if (pc->len == 0) { pc->tend = pc->p - 1; pc->tt = JIM_TT_ESC; return JIM_OK; } switch (*pc->p) { case '\\': if (--pc->len == 0) { /* Trailing newline */ pc->tt = JIM_TT_ESC; pc->tend = pc->p; return JIM_OK; } pc->p++; break; case ' ': case '\t': case '\n': case '\r': if (pc->state == JIM_PS_DEF) { pc->tend = pc->p - 1; pc->tt = JIM_TT_ESC; return JIM_OK; } else if (*pc->p == '\n') { pc->linenr++; } break; case '"': if (pc->state == JIM_PS_QUOTE) { pc->tend = pc->p - 1; pc->tt = JIM_TT_ESC; pc->p++; pc->len--; pc->state = JIM_PS_DEF; return JIM_OK; } break; } pc->p++; pc->len--; } return JIM_OK; /* unreached */ } /* ----------------------------------------------------------------------------- * Jim_Obj related functions * ---------------------------------------------------------------------------*/ /* Return a new initialized object. */ Jim_Obj *Jim_NewObj(Jim_Interp *interp) { Jim_Obj *objPtr; /* -- Check if there are objects in the free list -- */ if (interp->freeList != NULL) { /* -- Unlink the object from the free list -- */ objPtr = interp->freeList; interp->freeList = objPtr->nextObjPtr; } else { /* -- No ready to use objects: allocate a new one -- */ objPtr = Jim_Alloc(sizeof(*objPtr)); } /* Object is returned with refCount of 0. Every * kind of GC implemented should take care to don't try * to scan objects with refCount == 0. */ objPtr->refCount = 0; /* All the other fields are left not initialized to save time. * The caller will probably want to set them to the right * value anyway. */ /* -- Put the object into the live list -- */ objPtr->prevObjPtr = NULL; objPtr->nextObjPtr = interp->liveList; if (interp->liveList) interp->liveList->prevObjPtr = objPtr; interp->liveList = objPtr; return objPtr; } /* Free an object. Actually objects are never freed, but * just moved to the free objects list, where they will be * reused by Jim_NewObj(). */ void Jim_FreeObj(Jim_Interp *interp, Jim_Obj *objPtr) { /* Check if the object was already freed, panic. */ if (objPtr->refCount != 0) { Jim_Panic(interp, "!!!Object %p freed with bad refcount %d, type=%s", objPtr, objPtr->refCount, objPtr->typePtr ? objPtr->typePtr->name : ""); } /* Free the internal representation */ Jim_FreeIntRep(interp, objPtr); /* Free the string representation */ if (objPtr->bytes != NULL) { if (objPtr->bytes != JimEmptyStringRep) Jim_Free(objPtr->bytes); } /* Unlink the object from the live objects list */ if (objPtr->prevObjPtr) objPtr->prevObjPtr->nextObjPtr = objPtr->nextObjPtr; if (objPtr->nextObjPtr) objPtr->nextObjPtr->prevObjPtr = objPtr->prevObjPtr; if (interp->liveList == objPtr) interp->liveList = objPtr->nextObjPtr; /* Link the object into the free objects list */ objPtr->prevObjPtr = NULL; objPtr->nextObjPtr = interp->freeList; if (interp->freeList) interp->freeList->prevObjPtr = objPtr; interp->freeList = objPtr; objPtr->refCount = -1; } /* Invalidate the string representation of an object. */ void Jim_InvalidateStringRep(Jim_Obj *objPtr) { if (objPtr->bytes != NULL) { if (objPtr->bytes != JimEmptyStringRep) Jim_Free(objPtr->bytes); } objPtr->bytes = NULL; } #define Jim_SetStringRep(o, b, l) \ do { (o)->bytes = b; (o)->length = l; } while (0) /* Set the initial string representation for an object. * Does not try to free an old one. */ void Jim_InitStringRep(Jim_Obj *objPtr, const char *bytes, int length) { if (length == 0) { objPtr->bytes = JimEmptyStringRep; objPtr->length = 0; } else { objPtr->bytes = Jim_Alloc(length + 1); objPtr->length = length; memcpy(objPtr->bytes, bytes, length); objPtr->bytes[length] = '\0'; } } /* Duplicate an object. The returned object has refcount = 0. */ Jim_Obj *Jim_DuplicateObj(Jim_Interp *interp, Jim_Obj *objPtr) { Jim_Obj *dupPtr; dupPtr = Jim_NewObj(interp); if (objPtr->bytes == NULL) { /* Object does not have a valid string representation. */ dupPtr->bytes = NULL; } else { Jim_InitStringRep(dupPtr, objPtr->bytes, objPtr->length); } if (objPtr->typePtr != NULL) { if (objPtr->typePtr->dupIntRepProc == NULL) { dupPtr->internalRep = objPtr->internalRep; } else { objPtr->typePtr->dupIntRepProc(interp, objPtr, dupPtr); } dupPtr->typePtr = objPtr->typePtr; } else { dupPtr->typePtr = NULL; } return dupPtr; } /* Return the string representation for objPtr. If the object * string representation is invalid, calls the method to create * a new one starting from the internal representation of the object. */ const char *Jim_GetString(Jim_Obj *objPtr, int *lenPtr) { if (objPtr->bytes == NULL) { /* Invalid string repr. Generate it. */ if (objPtr->typePtr->updateStringProc == NULL) { Jim_Panic(NULL, "UpdateStringProc called against '%s' type.", objPtr->typePtr->name); } objPtr->typePtr->updateStringProc(objPtr); } if (lenPtr) *lenPtr = objPtr->length; return objPtr->bytes; } /* Just returns the length of the object's string rep */ int Jim_Length(Jim_Obj *objPtr) { int len; Jim_GetString(objPtr, &len); return len; } static void FreeDictSubstInternalRep(Jim_Interp *interp, Jim_Obj *objPtr); static void DupDictSubstInternalRep(Jim_Interp *interp, Jim_Obj *srcPtr, Jim_Obj *dupPtr); static const Jim_ObjType dictSubstObjType = { "dict-substitution", FreeDictSubstInternalRep, DupDictSubstInternalRep, NULL, JIM_TYPE_NONE, }; static void FreeInterpolatedInternalRep(Jim_Interp *interp, Jim_Obj *objPtr) { Jim_DecrRefCount(interp, (Jim_Obj *)objPtr->internalRep.twoPtrValue.ptr2); } static const Jim_ObjType interpolatedObjType = { "interpolated", FreeInterpolatedInternalRep, NULL, NULL, JIM_TYPE_NONE, }; /* ----------------------------------------------------------------------------- * String Object * ---------------------------------------------------------------------------*/ static void DupStringInternalRep(Jim_Interp *interp, Jim_Obj *srcPtr, Jim_Obj *dupPtr); static int SetStringFromAny(Jim_Interp *interp, struct Jim_Obj *objPtr); static const Jim_ObjType stringObjType = { "string", NULL, DupStringInternalRep, NULL, JIM_TYPE_REFERENCES, }; static void DupStringInternalRep(Jim_Interp *interp, Jim_Obj *srcPtr, Jim_Obj *dupPtr) { JIM_NOTUSED(interp); /* This is a bit subtle: the only caller of this function * should be Jim_DuplicateObj(), that will copy the * string representaion. After the copy, the duplicated * object will not have more room in teh buffer than * srcPtr->length bytes. So we just set it to length. */ dupPtr->internalRep.strValue.maxLength = srcPtr->length; dupPtr->internalRep.strValue.charLength = srcPtr->internalRep.strValue.charLength; } static int SetStringFromAny(Jim_Interp *interp, Jim_Obj *objPtr) { /* Get a fresh string representation. */ (void)Jim_GetString(objPtr, NULL); /* Free any other internal representation. */ Jim_FreeIntRep(interp, objPtr); /* Set it as string, i.e. just set the maxLength field. */ objPtr->typePtr = &stringObjType; objPtr->internalRep.strValue.maxLength = objPtr->length; /* Don't know the utf-8 length yet */ objPtr->internalRep.strValue.charLength = -1; return JIM_OK; } /** * Returns the length of the object string in chars, not bytes. * * These may be different for a utf-8 string. */ int Jim_Utf8Length(Jim_Interp *interp, Jim_Obj *objPtr) { #ifdef JIM_UTF8 if (objPtr->typePtr != &stringObjType) SetStringFromAny(interp, objPtr); if (objPtr->internalRep.strValue.charLength < 0) { objPtr->internalRep.strValue.charLength = utf8_strlen(objPtr->bytes, objPtr->length); } return objPtr->internalRep.strValue.charLength; #else return Jim_Length(objPtr); #endif } /** * Check that the name does not contain embedded nulls. * * Variable and procedure names are maniplated as null terminated strings, so * don't allow names with embedded nulls. */ int Jim_ValidName(Jim_Interp *interp, const char *type, Jim_Obj *nameObjPtr) { /* Variable names and proc names can't contain embedded nulls */ int len; const char *str = Jim_GetString(nameObjPtr, &len); if (memchr(str, '\0', len)) { Jim_SetResultFormatted(interp, "%s name contains embedded null", type); return JIM_ERR; } return JIM_OK; } /* len is in bytes -- see also Jim_NewStringObjUtf8() */ Jim_Obj *Jim_NewStringObj(Jim_Interp *interp, const char *s, int len) { Jim_Obj *objPtr = Jim_NewObj(interp); /* Need to find out how many bytes the string requires */ if (len == -1) len = strlen(s); /* Alloc/Set the string rep. */ if (len == 0) { objPtr->bytes = JimEmptyStringRep; objPtr->length = 0; } else { objPtr->bytes = Jim_Alloc(len + 1); objPtr->length = len; memcpy(objPtr->bytes, s, len); objPtr->bytes[len] = '\0'; } /* No typePtr field for the vanilla string object. */ objPtr->typePtr = NULL; return objPtr; } /* charlen is in characters -- see also Jim_NewStringObj() */ Jim_Obj *Jim_NewStringObjUtf8(Jim_Interp *interp, const char *s, int charlen) { #ifdef JIM_UTF8 /* Need to find out how many bytes the string requires */ int bytelen = utf8_index(s, charlen); Jim_Obj *objPtr = Jim_NewStringObj(interp, s, bytelen); /* Remember the utf8 length, so set the type */ objPtr->typePtr = &stringObjType; objPtr->internalRep.strValue.maxLength = bytelen; objPtr->internalRep.strValue.charLength = charlen; return objPtr; #else return Jim_NewStringObj(interp, s, charlen); #endif } /* This version does not try to duplicate the 's' pointer, but * use it directly. */ Jim_Obj *Jim_NewStringObjNoAlloc(Jim_Interp *interp, char *s, int len) { Jim_Obj *objPtr = Jim_NewObj(interp); if (len == -1) len = strlen(s); Jim_SetStringRep(objPtr, s, len); objPtr->typePtr = NULL; return objPtr; } /* Low-level string append. Use it only against objects * of type "string". */ static void StringAppendString(Jim_Obj *objPtr, const char *str, int len) { int needlen; if (len == -1) len = strlen(str); needlen = objPtr->length + len; if (objPtr->internalRep.strValue.maxLength < needlen || objPtr->internalRep.strValue.maxLength == 0) { needlen *= 2; /* Inefficient to malloc() for less than 8 bytes */ if (needlen < 7) { needlen = 7; } if (objPtr->bytes == JimEmptyStringRep) { objPtr->bytes = Jim_Alloc(needlen + 1); } else { objPtr->bytes = Jim_Realloc(objPtr->bytes, needlen + 1); } objPtr->internalRep.strValue.maxLength = needlen; } memcpy(objPtr->bytes + objPtr->length, str, len); objPtr->bytes[objPtr->length + len] = '\0'; if (objPtr->internalRep.strValue.charLength >= 0) { /* Update the utf-8 char length */ objPtr->internalRep.strValue.charLength += utf8_strlen(objPtr->bytes + objPtr->length, len); } objPtr->length += len; } /* Higher level API to append strings to objects. */ void Jim_AppendString(Jim_Interp *interp, Jim_Obj *objPtr, const char *str, int len) { if (Jim_IsShared(objPtr)) Jim_Panic(interp, "Jim_AppendString called with shared object"); if (objPtr->typePtr != &stringObjType) SetStringFromAny(interp, objPtr); StringAppendString(objPtr, str, len); } void Jim_AppendObj(Jim_Interp *interp, Jim_Obj *objPtr, Jim_Obj *appendObjPtr) { int len; const char *str; str = Jim_GetString(appendObjPtr, &len); Jim_AppendString(interp, objPtr, str, len); } void Jim_AppendStrings(Jim_Interp *interp, Jim_Obj *objPtr, ...) { va_list ap; if (objPtr->typePtr != &stringObjType) SetStringFromAny(interp, objPtr); va_start(ap, objPtr); while (1) { char *s = va_arg(ap, char *); if (s == NULL) break; Jim_AppendString(interp, objPtr, s, -1); } va_end(ap); } int Jim_StringEqObj(Jim_Obj *aObjPtr, Jim_Obj *bObjPtr) { const char *aStr, *bStr; int aLen, bLen; if (aObjPtr == bObjPtr) return 1; aStr = Jim_GetString(aObjPtr, &aLen); bStr = Jim_GetString(bObjPtr, &bLen); if (aLen != bLen) return 0; return JimStringCompare(aStr, aLen, bStr, bLen) == 0; } int Jim_StringMatchObj(Jim_Interp *interp, Jim_Obj *patternObjPtr, Jim_Obj *objPtr, int nocase) { return JimStringMatch(interp, patternObjPtr, Jim_GetString(objPtr, NULL), nocase); } int Jim_StringCompareObj(Jim_Interp *interp, Jim_Obj *firstObjPtr, Jim_Obj *secondObjPtr, int nocase) { const char *s1, *s2; int l1, l2; s1 = Jim_GetString(firstObjPtr, &l1); s2 = Jim_GetString(secondObjPtr, &l2); if (nocase) { return JimStringCompareNoCase(s1, s2, -1); } return JimStringCompare(s1, l1, s2, l2); } /* Convert a range, as returned by Jim_GetRange(), into * an absolute index into an object of the specified length. * This function may return negative values, or values * bigger or equal to the length of the list if the index * is out of range. */ static int JimRelToAbsIndex(int len, int idx) { if (idx < 0) return len + idx; return idx; } /* Convert a pair of index as normalize by JimRelToAbsIndex(), * into a range stored in *firstPtr, *lastPtr, *rangeLenPtr, suitable * for implementation of commands like [string range] and [lrange]. * * The resulting range is guaranteed to address valid elements of * the structure. */ static void JimRelToAbsRange(int len, int first, int last, int *firstPtr, int *lastPtr, int *rangeLenPtr) { int rangeLen; if (first > last) { rangeLen = 0; } else { rangeLen = last - first + 1; if (rangeLen) { if (first < 0) { rangeLen += first; first = 0; } if (last >= len) { rangeLen -= (last - (len - 1)); last = len - 1; } } } if (rangeLen < 0) rangeLen = 0; *firstPtr = first; *lastPtr = last; *rangeLenPtr = rangeLen; } Jim_Obj *Jim_StringRangeObj(Jim_Interp *interp, Jim_Obj *strObjPtr, Jim_Obj *firstObjPtr, Jim_Obj *lastObjPtr) { int first, last; const char *str; int len, rangeLen; int bytelen; if (Jim_GetIndex(interp, firstObjPtr, &first) != JIM_OK || Jim_GetIndex(interp, lastObjPtr, &last) != JIM_OK) return NULL; str = Jim_GetString(strObjPtr, &bytelen); len = Jim_Utf8Length(interp, strObjPtr); first = JimRelToAbsIndex(len, first); last = JimRelToAbsIndex(len, last); JimRelToAbsRange(len, first, last, &first, &last, &rangeLen); if (len == bytelen) { /* ASCII optimisation */ return Jim_NewStringObj(interp, str + first, rangeLen); } return Jim_NewStringObjUtf8(interp, str + utf8_index(str, first), rangeLen); } static Jim_Obj *JimStringToLower(Jim_Interp *interp, Jim_Obj *strObjPtr) { char *buf, *p; int len; const char *str; if (strObjPtr->typePtr != &stringObjType) { SetStringFromAny(interp, strObjPtr); } str = Jim_GetString(strObjPtr, &len); buf = p = Jim_Alloc(len + 1); while (*str) { int c; str += utf8_tounicode(str, &c); p += utf8_fromunicode(p, utf8_lower(c)); } *p = 0; return Jim_NewStringObjNoAlloc(interp, buf, len); } static Jim_Obj *JimStringToUpper(Jim_Interp *interp, Jim_Obj *strObjPtr) { char *buf, *p; int len; const char *str; if (strObjPtr->typePtr != &stringObjType) { SetStringFromAny(interp, strObjPtr); } str = Jim_GetString(strObjPtr, &len); buf = p = Jim_Alloc(len + 1); while (*str) { int c; str += utf8_tounicode(str, &c); p += utf8_fromunicode(p, utf8_upper(c)); } *p = 0; return Jim_NewStringObjNoAlloc(interp, buf, len); } /* Similar to memchr() except searches a UTF-8 string 'str' of byte length 'len' * for unicode character 'c'. * Returns the position if found or NULL if not */ static const char *utf8_memchr(const char *str, int len, int c) { #ifdef JIM_UTF8 while (len) { int sc; int n = utf8_tounicode(str, &sc); if (sc == c) { return str; } str += n; len -= n; } return NULL; #else return memchr(str, c, len); #endif } /** * Searches for the first non-trim char in string (str, len) * * If none is found, returns just past the last char. * * Lengths are in bytes. */ static const char *JimFindTrimLeft(const char *str, int len, const char *trimchars, int trimlen) { while (len) { int c; int n = utf8_tounicode(str, &c); if (utf8_memchr(trimchars, trimlen, c) == NULL) { /* Not a trim char, so stop */ break; } str += n; len -= n; } return str; } /** * Searches backwards for a non-trim char in string (str, len). * * Returns a pointer to just after the non-trim char, or NULL if not found. * * Lengths are in bytes. */ static const char *JimFindTrimRight(const char *str, int len, const char *trimchars, int trimlen) { str += len; while (len) { int c; int n = utf8_prev_len(str, len); len -= n; str -= n; n = utf8_tounicode(str, &c); if (utf8_memchr(trimchars, trimlen, c) == NULL) { return str + n; } } return NULL; } static const char default_trim_chars[] = " \t\n\r"; /* sizeof() here includes the null byte */ static int default_trim_chars_len = sizeof(default_trim_chars); static Jim_Obj *JimStringTrimLeft(Jim_Interp *interp, Jim_Obj *strObjPtr, Jim_Obj *trimcharsObjPtr) { int len; const char *str = Jim_GetString(strObjPtr, &len); const char *trimchars = default_trim_chars; int trimcharslen = default_trim_chars_len; const char *newstr; if (trimcharsObjPtr) { trimchars = Jim_GetString(trimcharsObjPtr, &trimcharslen); } newstr = JimFindTrimLeft(str, len, trimchars, trimcharslen); if (newstr == str) { return strObjPtr; } return Jim_NewStringObj(interp, newstr, len - (newstr - str)); } static Jim_Obj *JimStringTrimRight(Jim_Interp *interp, Jim_Obj *strObjPtr, Jim_Obj *trimcharsObjPtr) { int len; const char *trimchars = default_trim_chars; int trimcharslen = default_trim_chars_len; const char *nontrim; if (trimcharsObjPtr) { trimchars = Jim_GetString(trimcharsObjPtr, &trimcharslen); } if (strObjPtr->typePtr != &stringObjType) { SetStringFromAny(interp, strObjPtr); } Jim_GetString(strObjPtr, &len); nontrim = JimFindTrimRight(strObjPtr->bytes, len, trimchars, trimcharslen); if (nontrim == NULL) { /* All trim, so return a zero-length string */ return Jim_NewEmptyStringObj(interp); } if (nontrim == strObjPtr->bytes + len) { return strObjPtr; } if (Jim_IsShared(strObjPtr)) { strObjPtr = Jim_NewStringObj(interp, strObjPtr->bytes, (nontrim - strObjPtr->bytes)); } else { /* Can modify this string in place */ strObjPtr->bytes[nontrim - strObjPtr->bytes] = 0; strObjPtr->length = (nontrim - strObjPtr->bytes); } return strObjPtr; } static Jim_Obj *JimStringTrim(Jim_Interp *interp, Jim_Obj *strObjPtr, Jim_Obj *trimcharsObjPtr) { /* First trim left. */ Jim_Obj *objPtr = JimStringTrimLeft(interp, strObjPtr, trimcharsObjPtr); /* Now trim right */ strObjPtr = JimStringTrimRight(interp, objPtr, trimcharsObjPtr); if (objPtr != strObjPtr) { /* Note that we don't want this object to be leaked */ Jim_IncrRefCount(objPtr); Jim_DecrRefCount(interp, objPtr); } return strObjPtr; } static int JimStringIs(Jim_Interp *interp, Jim_Obj *strObjPtr, Jim_Obj *strClass, int strict) { static const char * const strclassnames[] = { "integer", "alpha", "alnum", "ascii", "digit", "double", "lower", "upper", "space", "xdigit", "control", "print", "graph", "punct", NULL }; enum { STR_IS_INTEGER, STR_IS_ALPHA, STR_IS_ALNUM, STR_IS_ASCII, STR_IS_DIGIT, STR_IS_DOUBLE, STR_IS_LOWER, STR_IS_UPPER, STR_IS_SPACE, STR_IS_XDIGIT, STR_IS_CONTROL, STR_IS_PRINT, STR_IS_GRAPH, STR_IS_PUNCT }; int strclass; int len; int i; const char *str; int (*isclassfunc)(int c) = NULL; if (Jim_GetEnum(interp, strClass, strclassnames, &strclass, "class", JIM_ERRMSG | JIM_ENUM_ABBREV) != JIM_OK) { return JIM_ERR; } str = Jim_GetString(strObjPtr, &len); if (len == 0) { Jim_SetResultInt(interp, !strict); return JIM_OK; } switch (strclass) { case STR_IS_INTEGER: { jim_wide w; Jim_SetResultInt(interp, JimGetWideNoErr(interp, strObjPtr, &w) == JIM_OK); return JIM_OK; } case STR_IS_DOUBLE: { double d; Jim_SetResultInt(interp, Jim_GetDouble(interp, strObjPtr, &d) == JIM_OK && errno != ERANGE); return JIM_OK; } case STR_IS_ALPHA: isclassfunc = isalpha; break; case STR_IS_ALNUM: isclassfunc = isalnum; break; case STR_IS_ASCII: isclassfunc = isascii; break; case STR_IS_DIGIT: isclassfunc = isdigit; break; case STR_IS_LOWER: isclassfunc = islower; break; case STR_IS_UPPER: isclassfunc = isupper; break; case STR_IS_SPACE: isclassfunc = isspace; break; case STR_IS_XDIGIT: isclassfunc = isxdigit; break; case STR_IS_CONTROL: isclassfunc = iscntrl; break; case STR_IS_PRINT: isclassfunc = isprint; break; case STR_IS_GRAPH: isclassfunc = isgraph; break; case STR_IS_PUNCT: isclassfunc = ispunct; break; default: return JIM_ERR; } for (i = 0; i < len; i++) { if (!isclassfunc(str[i])) { Jim_SetResultInt(interp, 0); return JIM_OK; } } Jim_SetResultInt(interp, 1); return JIM_OK; } /* ----------------------------------------------------------------------------- * Compared String Object * ---------------------------------------------------------------------------*/ /* This is strange object that allows to compare a C literal string * with a Jim object in very short time if the same comparison is done * multiple times. For example every time the [if] command is executed, * Jim has to check if a given argument is "else". This comparions if * the code has no errors are true most of the times, so we can cache * inside the object the pointer of the string of the last matching * comparison. Because most C compilers perform literal sharing, * so that: char *x = "foo", char *y = "foo", will lead to x == y, * this works pretty well even if comparisons are at different places * inside the C code. */ static const Jim_ObjType comparedStringObjType = { "compared-string", NULL, NULL, NULL, JIM_TYPE_REFERENCES, }; /* The only way this object is exposed to the API is via the following * function. Returns true if the string and the object string repr. * are the same, otherwise zero is returned. * * Note: this isn't binary safe, but it hardly needs to be.*/ int Jim_CompareStringImmediate(Jim_Interp *interp, Jim_Obj *objPtr, const char *str) { if (objPtr->typePtr == &comparedStringObjType && objPtr->internalRep.ptr == str) return 1; else { const char *objStr = Jim_GetString(objPtr, NULL); if (strcmp(str, objStr) != 0) return 0; if (objPtr->typePtr != &comparedStringObjType) { Jim_FreeIntRep(interp, objPtr); objPtr->typePtr = &comparedStringObjType; } objPtr->internalRep.ptr = (char *)str; /*ATTENTION: const cast */ return 1; } } static int qsortCompareStringPointers(const void *a, const void *b) { char *const *sa = (char *const *)a; char *const *sb = (char *const *)b; return strcmp(*sa, *sb); } /* ----------------------------------------------------------------------------- * Source Object * * This object is just a string from the language point of view, but * in the internal representation it contains the filename and line number * where this given token was read. This information is used by * Jim_EvalObj() if the object passed happens to be of type "source". * * This allows to propagate the information about line numbers and file * names and give error messages with absolute line numbers. * * Note that this object uses shared strings for filenames, and the * pointer to the filename together with the line number is taken into * the space for the "inline" internal representation of the Jim_Object, * so there is almost memory zero-overhead. * * Also the object will be converted to something else if the given * token it represents in the source file is not something to be * evaluated (not a script), and will be specialized in some other way, * so the time overhead is also null. * ---------------------------------------------------------------------------*/ static void FreeSourceInternalRep(Jim_Interp *interp, Jim_Obj *objPtr); static void DupSourceInternalRep(Jim_Interp *interp, Jim_Obj *srcPtr, Jim_Obj *dupPtr); static const Jim_ObjType sourceObjType = { "source", FreeSourceInternalRep, DupSourceInternalRep, NULL, JIM_TYPE_REFERENCES, }; void FreeSourceInternalRep(Jim_Interp *interp, Jim_Obj *objPtr) { Jim_ReleaseSharedString(interp, objPtr->internalRep.sourceValue.fileName); } void DupSourceInternalRep(Jim_Interp *interp, Jim_Obj *srcPtr, Jim_Obj *dupPtr) { dupPtr->internalRep.sourceValue.fileName = Jim_GetSharedString(interp, srcPtr->internalRep.sourceValue.fileName); dupPtr->internalRep.sourceValue.lineNumber = dupPtr->internalRep.sourceValue.lineNumber; dupPtr->typePtr = &sourceObjType; } static void JimSetSourceInfo(Jim_Interp *interp, Jim_Obj *objPtr, const char *fileName, int lineNumber) { if (Jim_IsShared(objPtr)) Jim_Panic(interp, "JimSetSourceInfo called with shared object"); if (objPtr->typePtr != NULL) Jim_Panic(interp, "JimSetSourceInfo called with typePtr != NULL"); objPtr->internalRep.sourceValue.fileName = Jim_GetSharedString(interp, fileName); objPtr->internalRep.sourceValue.lineNumber = lineNumber; objPtr->typePtr = &sourceObjType; } /* ----------------------------------------------------------------------------- * Script Object * ---------------------------------------------------------------------------*/ static const Jim_ObjType scriptLineObjType = { "scriptline", NULL, NULL, NULL, 0, }; static Jim_Obj *JimNewScriptLineObj(Jim_Interp *interp, int argc, int line) { Jim_Obj *objPtr; objPtr = Jim_NewObj(interp); objPtr->typePtr = &scriptLineObjType; objPtr->bytes = JimEmptyStringRep; objPtr->internalRep.scriptLineValue.argc = argc; objPtr->internalRep.scriptLineValue.line = line; return objPtr; } #define JIM_CMDSTRUCT_EXPAND -1 static void FreeScriptInternalRep(Jim_Interp *interp, Jim_Obj *objPtr); static void DupScriptInternalRep(Jim_Interp *interp, Jim_Obj *srcPtr, Jim_Obj *dupPtr); static int SetScriptFromAny(Jim_Interp *interp, struct Jim_Obj *objPtr); static const Jim_ObjType scriptObjType = { "script", FreeScriptInternalRep, DupScriptInternalRep, NULL, JIM_TYPE_REFERENCES, }; /* The ScriptToken structure represents every token into a scriptObj. * Every token contains an associated Jim_Obj that can be specialized * by commands operating on it. */ typedef struct ScriptToken { int type; Jim_Obj *objPtr; } ScriptToken; /* This is the script object internal representation. An array of * ScriptToken structures, including a pre-computed representation of the * command length and arguments. * * For example the script: * * puts hello * set $i $x$y [foo]BAR * * will produce a ScriptObj with the following Tokens: * * LIN 2 * ESC puts * ESC hello * LIN 4 * ESC set * VAR i * WRD 2 * VAR x * VAR y * WRD 2 * CMD foo * ESC BAR * * "puts hello" has two args (LIN 2), composed of single tokens. * (Note that the WRD token is omitted for the common case of a single token.) * * "set $i $x$y [foo]BAR" has four (LIN 4) args, the first word * has 1 token (ESC SET), and the last has two tokens (WRD 2 CMD foo ESC BAR) * * The precomputation of the command structure makes Jim_Eval() faster, * and simpler because there aren't dynamic lengths / allocations. * * -- {expand}/{*} handling -- * * Expand is handled in a special way. * * If a "word" begins with {*}, the word token count is -ve. * * For example the command: * * list {*}{a b} * * Will produce the following cmdstruct array: * * LIN 2 * ESC list * WRD -1 * STR a b * * Note that the 'LIN' token also contains the source information for the * first word of the line for error reporting purposes * * -- the substFlags field of the structure -- * * The scriptObj structure is used to represent both "script" objects * and "subst" objects. In the second case, the there are no LIN and WRD * tokens. Instead SEP and EOL tokens are added as-is. * In addition, the field 'substFlags' is used to represent the flags used to turn * the string into the internal representation used to perform the * substitution. If this flags are not what the application requires * the scriptObj is created again. For example the script: * * subst -nocommands $string * subst -novariables $string * * Will recreate the internal representation of the $string object * two times. */ typedef struct ScriptObj { int len; /* Length as number of tokens. */ ScriptToken *token; /* Tokens array. */ int substFlags; /* flags used for the compilation of "subst" objects */ int inUse; /* Used to share a ScriptObj. Currently only used by Jim_EvalObj() as protection against shimmering of the currently evaluated object. */ const char *fileName; int line; /* Line number of the first line */ } ScriptObj; void FreeScriptInternalRep(Jim_Interp *interp, Jim_Obj *objPtr) { int i; struct ScriptObj *script = (void *)objPtr->internalRep.ptr; script->inUse--; if (script->inUse != 0) return; for (i = 0; i < script->len; i++) { Jim_DecrRefCount(interp, script->token[i].objPtr); } Jim_Free(script->token); if (script->fileName) { Jim_ReleaseSharedString(interp, script->fileName); } Jim_Free(script); } void DupScriptInternalRep(Jim_Interp *interp, Jim_Obj *srcPtr, Jim_Obj *dupPtr) { JIM_NOTUSED(interp); JIM_NOTUSED(srcPtr); /* Just returns an simple string. */ dupPtr->typePtr = NULL; } /* A simple parser token. * All the simple tokens for the script point into the same script string rep. */ typedef struct { const char *token; /* Pointer to the start of the token */ int len; /* Length of this token */ int type; /* Token type */ int line; /* Line number */ } ParseToken; /* A list of parsed tokens representing a script. * Tokens are added to this list as the script is parsed. * It grows as needed. */ typedef struct { /* Start with a statically allocated list of tokens which will be expanded with realloc if needed */ ParseToken *list; /* Array of tokens */ int size; /* Current size of the list */ int count; /* Number of entries used */ ParseToken static_list[20]; /* Small initial token space to avoid allocation */ } ParseTokenList; static void ScriptTokenListInit(ParseTokenList *tokenlist) { tokenlist->list = tokenlist->static_list; tokenlist->size = sizeof(tokenlist->static_list) / sizeof(ParseToken); tokenlist->count = 0; } static void ScriptTokenListFree(ParseTokenList *tokenlist) { if (tokenlist->list != tokenlist->static_list) { Jim_Free(tokenlist->list); } } /** * Adds the new token to the tokenlist. * The token has the given length, type and line number. * The token list is resized as necessary. */ static void ScriptAddToken(ParseTokenList *tokenlist, const char *token, int len, int type, int line) { ParseToken *t; if (tokenlist->count == tokenlist->size) { /* Resize the list */ tokenlist->size *= 2; if (tokenlist->list != tokenlist->static_list) { tokenlist->list = Jim_Realloc(tokenlist->list, tokenlist->size * sizeof(*tokenlist->list)); } else { /* The list needs to become allocated */ tokenlist->list = Jim_Alloc(tokenlist->size * sizeof(*tokenlist->list)); memcpy(tokenlist->list, tokenlist->static_list, tokenlist->count * sizeof(*tokenlist->list)); } } t = &tokenlist->list[tokenlist->count++]; t->token = token; t->len = len; t->type = type; t->line = line; } /* Counts the number of adjoining non-separator. * * Returns -ve if the first token is the expansion * operator (in which case the count doesn't include * that token). */ static int JimCountWordTokens(ParseToken *t) { int expand = 1; int count = 0; /* Is the first word {*} or {expand}? */ if (t->type == JIM_TT_STR && !TOKEN_IS_SEP(t[1].type)) { if ((t->len == 1 && *t->token == '*') || (t->len == 6 && strncmp(t->token, "expand", 6) == 0)) { /* Create an expand token */ expand = -1; t++; } } /* Now count non-separator words */ while (!TOKEN_IS_SEP(t->type)) { t++; count++; } return count * expand; } /** * Create a script/subst object from the given token. */ static Jim_Obj *JimMakeScriptObj(Jim_Interp *interp, const ParseToken *t) { Jim_Obj *objPtr; if (t->type == JIM_TT_ESC) { /* Convert the escape chars. */ int len = t->len; char *str = Jim_Alloc(len + 1); len = JimEscape(str, t->token, len); objPtr = Jim_NewStringObjNoAlloc(interp, str, len); } else { /* REVIST: Strictly, JIM_TT_STR should replace * with a single space. This is currently not done. */ objPtr = Jim_NewStringObj(interp, t->token, t->len); } return objPtr; } /** * Takes a tokenlist and creates the allocated list of script tokens * in script->token, of length script->len. * * Unnecessary tokens are discarded, and LINE and WORD tokens are inserted * as required. * * Also sets script->line to the line number of the first token */ static void ScriptObjAddTokens(Jim_Interp *interp, struct ScriptObj *script, ParseTokenList *tokenlist) { int i; struct ScriptToken *token; /* Number of tokens so far for the current command */ int lineargs = 0; /* This is the first token for the current command */ ScriptToken *linefirst; int count; int linenr; #ifdef DEBUG_SHOW_SCRIPT_TOKENS printf("==== Tokens ====\n"); for (i = 0; i < tokenlist->count; i++) { printf("[%2d]@%d %s '%.*s'\n", i, tokenlist->list[i].line, tt_name(tokenlist->list[i].type), tokenlist->list[i].len, tokenlist->list[i].token); } #endif /* May need up to one extra script token for each EOL in the worst case */ count = tokenlist->count; for (i = 0; i < tokenlist->count; i++) { if (tokenlist->list[i].type == JIM_TT_EOL) { count++; } } linenr = script->line = tokenlist->list[0].line; token = script->token = Jim_Alloc(sizeof(ScriptToken) * count); /* This is the first token for the current command */ linefirst = token++; for (i = 0; i < tokenlist->count; ) { /* Look ahead to find out how many tokens make up the next word */ int wordtokens; /* Skip any leading separators */ while (tokenlist->list[i].type == JIM_TT_SEP) { i++; } wordtokens = JimCountWordTokens(tokenlist->list + i); if (wordtokens == 0) { /* None, so at end of line */ if (lineargs) { linefirst->type = JIM_TT_LINE; linefirst->objPtr = JimNewScriptLineObj(interp, lineargs, linenr); Jim_IncrRefCount(linefirst->objPtr); /* Reset for new line */ lineargs = 0; linefirst = token++; } i++; continue; } else if (wordtokens != 1) { /* More than 1, or {expand}, so insert a WORD token */ token->type = JIM_TT_WORD; token->objPtr = Jim_NewIntObj(interp, wordtokens); Jim_IncrRefCount(token->objPtr); token++; if (wordtokens < 0) { /* Skip the expand token */ i++; wordtokens = -wordtokens - 1; lineargs--; } } lineargs++; linenr = tokenlist->list[i].line; /* Add each non-separator word token to the line */ while (wordtokens--) { const ParseToken *t = &tokenlist->list[i++]; if (t->type == JIM_TT_SEP) { continue; } token->type = t->type; token->objPtr = JimMakeScriptObj(interp, t); Jim_IncrRefCount(token->objPtr); /* Every object is initially a string, but the * internal type may be specialized during execution of the * script. */ if (script->fileName) { JimSetSourceInfo(interp, token->objPtr, script->fileName, t->line); } token++; } } if (lineargs == 0) { token--; } script->len = token - script->token; assert(script->len < count); #ifdef DEBUG_SHOW_SCRIPT printf("==== Script ====\n"); for (i = 0; i < script->len; i++) { const ScriptToken *t = &script->token[i]; printf("[%2d] %s %s\n", i, tt_name(t->type), Jim_GetString(t->objPtr, NULL)); } #endif } /** * Similar to ScriptObjAddTokens(), but for subst objects. */ static void SubstObjAddTokens(Jim_Interp *interp, struct ScriptObj *script, ParseTokenList *tokenlist) { int i; struct ScriptToken *token; token = script->token = Jim_Alloc(sizeof(ScriptToken) * tokenlist->count); for (i = 0; i < tokenlist->count; i++) { const ParseToken *t = &tokenlist->list[i]; /* Create a token for 't' */ token->type = t->type; token->objPtr = JimMakeScriptObj(interp, t); Jim_IncrRefCount(token->objPtr); token++; } script->len = i; } /* This method takes the string representation of an object * as a Tcl script, and generates the pre-parsed internal representation * of the script. */ int SetScriptFromAny(Jim_Interp *interp, struct Jim_Obj *objPtr) { int scriptTextLen; const char *scriptText = Jim_GetString(objPtr, &scriptTextLen); struct JimParserCtx parser; struct ScriptObj *script = Jim_Alloc(sizeof(*script)); ParseTokenList tokenlist; /* Try to get information about filename / line number */ if (objPtr->typePtr == &sourceObjType) { script->fileName = Jim_GetSharedString(interp, objPtr->internalRep.sourceValue.fileName); script->line = objPtr->internalRep.sourceValue.lineNumber; } else { script->fileName = NULL; script->line = 1; } /* Initially parse the script into tokens (in tokenlist) */ ScriptTokenListInit(&tokenlist); JimParserInit(&parser, scriptText, scriptTextLen, script->line); while (!JimParserEof(&parser)) { JimParseScript(&parser); ScriptAddToken(&tokenlist, parser.tstart, parser.tend - parser.tstart + 1, parser.tt, parser.tline); } /* Add a final EOF token */ ScriptAddToken(&tokenlist, scriptText + scriptTextLen, 0, JIM_TT_EOF, 0); /* Create the "real" script tokens from the initial token list */ script->substFlags = 0; script->inUse = 1; ScriptObjAddTokens(interp, script, &tokenlist); /* No longer need the token list */ ScriptTokenListFree(&tokenlist); if (!script->fileName) { script->fileName = Jim_GetSharedString(interp, ""); } /* Free the old internal rep and set the new one. */ Jim_FreeIntRep(interp, objPtr); Jim_SetIntRepPtr(objPtr, script); objPtr->typePtr = &scriptObjType; return JIM_OK; } ScriptObj *Jim_GetScript(Jim_Interp *interp, Jim_Obj *objPtr) { struct ScriptObj *script = Jim_GetIntRepPtr(objPtr); if (objPtr->typePtr != &scriptObjType || script->substFlags) { SetScriptFromAny(interp, objPtr); } return (ScriptObj *) Jim_GetIntRepPtr(objPtr); } /* ----------------------------------------------------------------------------- * Commands * ---------------------------------------------------------------------------*/ static void JimIncrCmdRefCount(Jim_Cmd *cmdPtr) { cmdPtr->inUse++; } static void JimDecrCmdRefCount(Jim_Interp *interp, Jim_Cmd *cmdPtr) { if (--cmdPtr->inUse == 0) { if (cmdPtr->cmdProc == NULL) { Jim_DecrRefCount(interp, cmdPtr->argListObjPtr); Jim_DecrRefCount(interp, cmdPtr->bodyObjPtr); if (cmdPtr->staticVars) { Jim_FreeHashTable(cmdPtr->staticVars); Jim_Free(cmdPtr->staticVars); } } else if (cmdPtr->delProc != NULL) { /* If it was a C coded command, call the delProc if any */ cmdPtr->delProc(interp, cmdPtr->privData); } Jim_Free(cmdPtr); } } /* Commands HashTable Type. * * Keys are dynamic allocated strings, Values are Jim_Cmd structures. */ static void JimCommandsHT_ValDestructor(void *interp, void *val) { JimDecrCmdRefCount(interp, val); } static const Jim_HashTableType JimCommandsHashTableType = { JimStringCopyHTHashFunction, /* hash function */ JimStringCopyHTKeyDup, /* key dup */ NULL, /* val dup */ JimStringCopyHTKeyCompare, /* key compare */ JimStringCopyHTKeyDestructor, /* key destructor */ JimCommandsHT_ValDestructor /* val destructor */ }; /* ------------------------- Commands related functions --------------------- */ int Jim_CreateCommand(Jim_Interp *interp, const char *cmdName, Jim_CmdProc cmdProc, void *privData, Jim_DelCmdProc delProc) { Jim_Cmd *cmdPtr; if (Jim_DeleteHashEntry(&interp->commands, cmdName) != JIM_ERR) { /* Command existed so incr proc epoch */ Jim_InterpIncrProcEpoch(interp); } cmdPtr = Jim_Alloc(sizeof(*cmdPtr)); /* Store the new details for this proc */ cmdPtr->delProc = delProc; cmdPtr->cmdProc = cmdProc; cmdPtr->privData = privData; cmdPtr->inUse = 1; Jim_AddHashEntry(&interp->commands, cmdName, cmdPtr); /* There is no need to increment the 'proc epoch' because * creation of a new procedure can never affect existing * cached commands. We don't do negative caching. */ return JIM_OK; } static int JimCreateProcedure(Jim_Interp *interp, const char *cmdName, Jim_Obj *argListObjPtr, Jim_Obj *staticsListObjPtr, Jim_Obj *bodyObjPtr, int leftArity, int optionalArgs, int args, int rightArity) { Jim_Cmd *cmdPtr; cmdPtr = Jim_Alloc(sizeof(*cmdPtr)); cmdPtr->cmdProc = NULL; /* Not a C coded command */ cmdPtr->argListObjPtr = argListObjPtr; cmdPtr->bodyObjPtr = bodyObjPtr; Jim_IncrRefCount(argListObjPtr); Jim_IncrRefCount(bodyObjPtr); cmdPtr->leftArity = leftArity; cmdPtr->optionalArgs = optionalArgs; cmdPtr->args = args; cmdPtr->rightArity = rightArity; cmdPtr->staticVars = NULL; cmdPtr->inUse = 1; /* Create the statics hash table. */ if (staticsListObjPtr) { int len, i; len = Jim_ListLength(interp, staticsListObjPtr); if (len != 0) { cmdPtr->staticVars = Jim_Alloc(sizeof(Jim_HashTable)); Jim_InitHashTable(cmdPtr->staticVars, &JimVariablesHashTableType, interp); for (i = 0; i < len; i++) { Jim_Obj *objPtr = 0, *initObjPtr = 0, *nameObjPtr = 0; Jim_Var *varPtr; int subLen; Jim_ListIndex(interp, staticsListObjPtr, i, &objPtr, JIM_NONE); /* Check if it's composed of two elements. */ subLen = Jim_ListLength(interp, objPtr); if (subLen == 1 || subLen == 2) { /* Try to get the variable value from the current * environment. */ Jim_ListIndex(interp, objPtr, 0, &nameObjPtr, JIM_NONE); if (subLen == 1) { initObjPtr = Jim_GetVariable(interp, nameObjPtr, JIM_NONE); if (initObjPtr == NULL) { Jim_SetResultFormatted(interp, "variable for initialization of static \"%#s\" not found in the local context", nameObjPtr); goto err; } } else { Jim_ListIndex(interp, objPtr, 1, &initObjPtr, JIM_NONE); } if (Jim_ValidName(interp, "static variable", nameObjPtr) != JIM_OK) { goto err; } varPtr = Jim_Alloc(sizeof(*varPtr)); varPtr->objPtr = initObjPtr; Jim_IncrRefCount(initObjPtr); varPtr->linkFramePtr = NULL; if (Jim_AddHashEntry(cmdPtr->staticVars, Jim_GetString(nameObjPtr, NULL), varPtr) != JIM_OK) { Jim_SetResultFormatted(interp, "static variable name \"%#s\" duplicated in statics list", nameObjPtr); Jim_DecrRefCount(interp, initObjPtr); Jim_Free(varPtr); goto err; } } else { Jim_SetResultFormatted(interp, "too many fields in static specifier \"%#s\"", objPtr); goto err; } } } } /* Add the new command */ /* It may already exist, so we try to delete the old one. * Note that reference count means that it won't be deleted yet if * it exists in the call stack */ if (Jim_DeleteHashEntry(&interp->commands, cmdName) != JIM_ERR) { /* There was an old procedure with the same name, this requires * a 'proc epoch' update. */ Jim_InterpIncrProcEpoch(interp); } /* If a procedure with the same name didn't existed there is no need * to increment the 'proc epoch' because creation of a new procedure * can never affect existing cached commands. We don't do * negative caching. */ Jim_AddHashEntry(&interp->commands, cmdName, cmdPtr); /* Unlike Tcl, set the name of the proc as the result */ Jim_SetResultString(interp, cmdName, -1); return JIM_OK; err: Jim_FreeHashTable(cmdPtr->staticVars); Jim_Free(cmdPtr->staticVars); Jim_DecrRefCount(interp, argListObjPtr); Jim_DecrRefCount(interp, bodyObjPtr); Jim_Free(cmdPtr); return JIM_ERR; } int Jim_DeleteCommand(Jim_Interp *interp, const char *cmdName) { if (Jim_DeleteHashEntry(&interp->commands, cmdName) == JIM_ERR) return JIM_ERR; Jim_InterpIncrProcEpoch(interp); return JIM_OK; } int Jim_RenameCommand(Jim_Interp *interp, const char *oldName, const char *newName) { Jim_HashEntry *he; /* Does it exist? */ he = Jim_FindHashEntry(&interp->commands, oldName); if (he == NULL) { Jim_SetResultFormatted(interp, "can't %s \"%s\": command doesn't exist", newName[0] ? "rename" : "delete", oldName); return JIM_ERR; } if (newName[0] == '\0') /* Delete! */ return Jim_DeleteCommand(interp, oldName); /* rename */ if (Jim_FindHashEntry(&interp->commands, newName)) { Jim_SetResultFormatted(interp, "can't rename to \"%s\": command already exists", newName); return JIM_ERR; } /* Add the new name first */ JimIncrCmdRefCount(he->val); Jim_AddHashEntry(&interp->commands, newName, he->val); /* Now remove the old name */ Jim_DeleteHashEntry(&interp->commands, oldName); /* Increment the epoch */ Jim_InterpIncrProcEpoch(interp); return JIM_OK; } /* ----------------------------------------------------------------------------- * Command object * ---------------------------------------------------------------------------*/ static int SetCommandFromAny(Jim_Interp *interp, struct Jim_Obj *objPtr); static const Jim_ObjType commandObjType = { "command", NULL, NULL, NULL, JIM_TYPE_REFERENCES, }; int SetCommandFromAny(Jim_Interp *interp, Jim_Obj *objPtr) { Jim_HashEntry *he; const char *cmdName; /* Get the string representation */ cmdName = Jim_GetString(objPtr, NULL); /* Lookup this name into the commands hash table */ he = Jim_FindHashEntry(&interp->commands, cmdName); if (he == NULL) return JIM_ERR; /* Free the old internal repr and set the new one. */ Jim_FreeIntRep(interp, objPtr); objPtr->typePtr = &commandObjType; objPtr->internalRep.cmdValue.procEpoch = interp->procEpoch; objPtr->internalRep.cmdValue.cmdPtr = (void *)he->val; return JIM_OK; } /* This function returns the command structure for the command name * stored in objPtr. It tries to specialize the objPtr to contain * a cached info instead to perform the lookup into the hash table * every time. The information cached may not be uptodate, in such * a case the lookup is performed and the cache updated. */ Jim_Cmd *Jim_GetCommand(Jim_Interp *interp, Jim_Obj *objPtr, int flags) { if ((objPtr->typePtr != &commandObjType || objPtr->internalRep.cmdValue.procEpoch != interp->procEpoch) && SetCommandFromAny(interp, objPtr) == JIM_ERR) { if (flags & JIM_ERRMSG) { Jim_SetResultFormatted(interp, "invalid command name \"%#s\"", objPtr); } return NULL; } return objPtr->internalRep.cmdValue.cmdPtr; } /* ----------------------------------------------------------------------------- * Variables * ---------------------------------------------------------------------------*/ /* Variables HashTable Type. * * Keys are dynamic allocated strings, Values are Jim_Var structures. */ static void JimVariablesHTValDestructor(void *interp, void *val) { Jim_Var *varPtr = (void *)val; Jim_DecrRefCount(interp, varPtr->objPtr); Jim_Free(val); } static const Jim_HashTableType JimVariablesHashTableType = { JimStringCopyHTHashFunction, /* hash function */ JimStringCopyHTKeyDup, /* key dup */ NULL, /* val dup */ JimStringCopyHTKeyCompare, /* key compare */ JimStringCopyHTKeyDestructor, /* key destructor */ JimVariablesHTValDestructor /* val destructor */ }; /* ----------------------------------------------------------------------------- * Variable object * ---------------------------------------------------------------------------*/ #define JIM_DICT_SUGAR 100 /* Only returned by SetVariableFromAny() */ static int SetVariableFromAny(Jim_Interp *interp, struct Jim_Obj *objPtr); static const Jim_ObjType variableObjType = { "variable", NULL, NULL, NULL, JIM_TYPE_REFERENCES, }; /* Return true if the string "str" looks like syntax sugar for [dict]. I.e. * is in the form "varname(key)". */ static int JimNameIsDictSugar(const char *str, int len) { if (len && str[len - 1] == ')' && strchr(str, '(') != NULL) return 1; return 0; } /* This method should be called only by the variable API. * It returns JIM_OK on success (variable already exists), * JIM_ERR if it does not exists, JIM_DICT_SUGAR if it's not * a variable name, but syntax glue for [dict] i.e. the last * character is ')' */ static int SetVariableFromAny(Jim_Interp *interp, struct Jim_Obj *objPtr) { Jim_HashEntry *he; const char *varName; int len; Jim_CallFrame *framePtr = interp->framePtr; /* Check if the object is already an uptodate variable */ if (objPtr->typePtr == &variableObjType && objPtr->internalRep.varValue.callFrameId == framePtr->id) { return JIM_OK; /* nothing to do */ } if (objPtr->typePtr == &dictSubstObjType) { return JIM_DICT_SUGAR; } /* Get the string representation */ varName = Jim_GetString(objPtr, &len); /* Make sure it's not syntax glue to get/set dict. */ if (JimNameIsDictSugar(varName, len)) { return JIM_DICT_SUGAR; } if (varName[0] == ':' && varName[1] == ':') { framePtr = interp->topFramePtr; he = Jim_FindHashEntry(&framePtr->vars, varName + 2); if (he == NULL) { return JIM_ERR; } } else { /* Lookup this name into the variables hash table */ he = Jim_FindHashEntry(&framePtr->vars, varName); if (he == NULL) { /* Try with static vars. */ if (framePtr->staticVars == NULL) return JIM_ERR; if (!(he = Jim_FindHashEntry(framePtr->staticVars, varName))) return JIM_ERR; } } /* Free the old internal repr and set the new one. */ Jim_FreeIntRep(interp, objPtr); objPtr->typePtr = &variableObjType; objPtr->internalRep.varValue.callFrameId = framePtr->id; objPtr->internalRep.varValue.varPtr = (void *)he->val; return JIM_OK; } /* -------------------- Variables related functions ------------------------- */ static int JimDictSugarSet(Jim_Interp *interp, Jim_Obj *ObjPtr, Jim_Obj *valObjPtr); static Jim_Obj *JimDictSugarGet(Jim_Interp *interp, Jim_Obj *ObjPtr, int flags); /* For now that's dummy. Variables lookup should be optimized * in many ways, with caching of lookups, and possibly with * a table of pre-allocated vars in every CallFrame for local vars. * All the caching should also have an 'epoch' mechanism similar * to the one used by Tcl for procedures lookup caching. */ int Jim_SetVariable(Jim_Interp *interp, Jim_Obj *nameObjPtr, Jim_Obj *valObjPtr) { const char *name; Jim_Var *var; int err; if ((err = SetVariableFromAny(interp, nameObjPtr)) != JIM_OK) { Jim_CallFrame *framePtr = interp->framePtr; /* Check for [dict] syntax sugar. */ if (err == JIM_DICT_SUGAR) return JimDictSugarSet(interp, nameObjPtr, valObjPtr); if (Jim_ValidName(interp, "variable", nameObjPtr) != JIM_OK) { return JIM_ERR; } /* New variable to create */ name = Jim_GetString(nameObjPtr, NULL); var = Jim_Alloc(sizeof(*var)); var->objPtr = valObjPtr; Jim_IncrRefCount(valObjPtr); var->linkFramePtr = NULL; /* Insert the new variable */ if (name[0] == ':' && name[1] == ':') { /* Into to the top evel frame */ framePtr = interp->topFramePtr; Jim_AddHashEntry(&framePtr->vars, name + 2, var); } else { Jim_AddHashEntry(&framePtr->vars, name, var); } /* Make the object int rep a variable */ Jim_FreeIntRep(interp, nameObjPtr); nameObjPtr->typePtr = &variableObjType; nameObjPtr->internalRep.varValue.callFrameId = framePtr->id; nameObjPtr->internalRep.varValue.varPtr = var; } else { var = nameObjPtr->internalRep.varValue.varPtr; if (var->linkFramePtr == NULL) { Jim_IncrRefCount(valObjPtr); Jim_DecrRefCount(interp, var->objPtr); var->objPtr = valObjPtr; } else { /* Else handle the link */ Jim_CallFrame *savedCallFrame; savedCallFrame = interp->framePtr; interp->framePtr = var->linkFramePtr; err = Jim_SetVariable(interp, var->objPtr, valObjPtr); interp->framePtr = savedCallFrame; if (err != JIM_OK) return err; } } return JIM_OK; } int Jim_SetVariableStr(Jim_Interp *interp, const char *name, Jim_Obj *objPtr) { Jim_Obj *nameObjPtr; int result; nameObjPtr = Jim_NewStringObj(interp, name, -1); Jim_IncrRefCount(nameObjPtr); result = Jim_SetVariable(interp, nameObjPtr, objPtr); Jim_DecrRefCount(interp, nameObjPtr); return result; } int Jim_SetGlobalVariableStr(Jim_Interp *interp, const char *name, Jim_Obj *objPtr) { Jim_CallFrame *savedFramePtr; int result; savedFramePtr = interp->framePtr; interp->framePtr = interp->topFramePtr; result = Jim_SetVariableStr(interp, name, objPtr); interp->framePtr = savedFramePtr; return result; } int Jim_SetVariableStrWithStr(Jim_Interp *interp, const char *name, const char *val) { Jim_Obj *nameObjPtr, *valObjPtr; int result; nameObjPtr = Jim_NewStringObj(interp, name, -1); valObjPtr = Jim_NewStringObj(interp, val, -1); Jim_IncrRefCount(nameObjPtr); Jim_IncrRefCount(valObjPtr); result = Jim_SetVariable(interp, nameObjPtr, valObjPtr); Jim_DecrRefCount(interp, nameObjPtr); Jim_DecrRefCount(interp, valObjPtr); return result; } int Jim_SetVariableLink(Jim_Interp *interp, Jim_Obj *nameObjPtr, Jim_Obj *targetNameObjPtr, Jim_CallFrame *targetCallFrame) { const char *varName; int len; varName = Jim_GetString(nameObjPtr, &len); if (JimNameIsDictSugar(varName, len)) { Jim_SetResultString(interp, "Dict key syntax invalid as link source", -1); return JIM_ERR; } /* Check for an existing variable or link */ if (SetVariableFromAny(interp, nameObjPtr) == JIM_OK) { Jim_Var *varPtr = nameObjPtr->internalRep.varValue.varPtr; if (varPtr->linkFramePtr == NULL) { Jim_SetResultFormatted(interp, "variable \"%#s\" already exists", nameObjPtr); return JIM_ERR; } /* It exists, but is a link, so delete the link */ varPtr->linkFramePtr = NULL; } /* Check for cycles. */ if (interp->framePtr == targetCallFrame) { Jim_Obj *objPtr = targetNameObjPtr; Jim_Var *varPtr; /* Cycles are only possible with 'uplevel 0' */ while (1) { if (Jim_StringEqObj(objPtr, nameObjPtr)) { Jim_SetResultString(interp, "can't upvar from variable to itself", -1); return JIM_ERR; } if (SetVariableFromAny(interp, objPtr) != JIM_OK) break; varPtr = objPtr->internalRep.varValue.varPtr; if (varPtr->linkFramePtr != targetCallFrame) break; objPtr = varPtr->objPtr; } } /* Perform the binding */ Jim_SetVariable(interp, nameObjPtr, targetNameObjPtr); /* We are now sure 'nameObjPtr' type is variableObjType */ nameObjPtr->internalRep.varValue.varPtr->linkFramePtr = targetCallFrame; return JIM_OK; } /* Return the Jim_Obj pointer associated with a variable name, * or NULL if the variable was not found in the current context. * The same optimization discussed in the comment to the * 'SetVariable' function should apply here. * * If JIM_UNSHARED is set and the variable is an array element (dict sugar) * in a dictionary which is shared, the array variable value is duplicated first. * This allows the array element to be updated (e.g. append, lappend) without * affecting other references to the dictionary. */ Jim_Obj *Jim_GetVariable(Jim_Interp *interp, Jim_Obj *nameObjPtr, int flags) { switch (SetVariableFromAny(interp, nameObjPtr)) { case JIM_OK:{ Jim_Var *varPtr = nameObjPtr->internalRep.varValue.varPtr; if (varPtr->linkFramePtr == NULL) { return varPtr->objPtr; } else { Jim_Obj *objPtr; /* The variable is a link? Resolve it. */ Jim_CallFrame *savedCallFrame = interp->framePtr; interp->framePtr = varPtr->linkFramePtr; objPtr = Jim_GetVariable(interp, varPtr->objPtr, flags); interp->framePtr = savedCallFrame; if (objPtr) { return objPtr; } /* Error, so fall through to the error message */ } } break; case JIM_DICT_SUGAR: /* [dict] syntax sugar. */ return JimDictSugarGet(interp, nameObjPtr, flags); } if (flags & JIM_ERRMSG) { Jim_SetResultFormatted(interp, "can't read \"%#s\": no such variable", nameObjPtr); } return NULL; } Jim_Obj *Jim_GetGlobalVariable(Jim_Interp *interp, Jim_Obj *nameObjPtr, int flags) { Jim_CallFrame *savedFramePtr; Jim_Obj *objPtr; savedFramePtr = interp->framePtr; interp->framePtr = interp->topFramePtr; objPtr = Jim_GetVariable(interp, nameObjPtr, flags); interp->framePtr = savedFramePtr; return objPtr; } Jim_Obj *Jim_GetVariableStr(Jim_Interp *interp, const char *name, int flags) { Jim_Obj *nameObjPtr, *varObjPtr; nameObjPtr = Jim_NewStringObj(interp, name, -1); Jim_IncrRefCount(nameObjPtr); varObjPtr = Jim_GetVariable(interp, nameObjPtr, flags); Jim_DecrRefCount(interp, nameObjPtr); return varObjPtr; } Jim_Obj *Jim_GetGlobalVariableStr(Jim_Interp *interp, const char *name, int flags) { Jim_CallFrame *savedFramePtr; Jim_Obj *objPtr; savedFramePtr = interp->framePtr; interp->framePtr = interp->topFramePtr; objPtr = Jim_GetVariableStr(interp, name, flags); interp->framePtr = savedFramePtr; return objPtr; } /* Unset a variable. * Note: On success unset invalidates all the variable objects created * in the current call frame incrementing. */ int Jim_UnsetVariable(Jim_Interp *interp, Jim_Obj *nameObjPtr, int flags) { const char *name; Jim_Var *varPtr; int retval; retval = SetVariableFromAny(interp, nameObjPtr); if (retval == JIM_DICT_SUGAR) { /* [dict] syntax sugar. */ return JimDictSugarSet(interp, nameObjPtr, NULL); } else if (retval == JIM_OK) { varPtr = nameObjPtr->internalRep.varValue.varPtr; /* If it's a link call UnsetVariable recursively */ if (varPtr->linkFramePtr) { Jim_CallFrame *savedCallFrame; savedCallFrame = interp->framePtr; interp->framePtr = varPtr->linkFramePtr; retval = Jim_UnsetVariable(interp, varPtr->objPtr, JIM_NONE); interp->framePtr = savedCallFrame; } else { Jim_CallFrame *framePtr = interp->framePtr; name = Jim_GetString(nameObjPtr, NULL); if (name[0] == ':' && name[1] == ':') { framePtr = interp->topFramePtr; name += 2; } retval = Jim_DeleteHashEntry(&framePtr->vars, name); if (retval == JIM_OK) { /* Change the callframe id, invalidating var lookup caching */ JimChangeCallFrameId(interp, framePtr); } } } if (retval != JIM_OK && (flags & JIM_ERRMSG)) { Jim_SetResultFormatted(interp, "can't unset \"%#s\": no such variable", nameObjPtr); } return retval; } /* ---------- Dict syntax sugar (similar to array Tcl syntax) -------------- */ /* Given a variable name for [dict] operation syntax sugar, * this function returns two objects, the first with the name * of the variable to set, and the second with the rispective key. * For example "foo(bar)" will return objects with string repr. of * "foo" and "bar". * * The returned objects have refcount = 1. The function can't fail. */ static void JimDictSugarParseVarKey(Jim_Interp *interp, Jim_Obj *objPtr, Jim_Obj **varPtrPtr, Jim_Obj **keyPtrPtr) { const char *str, *p; char *t; int len, keyLen, nameLen; Jim_Obj *varObjPtr, *keyObjPtr; str = Jim_GetString(objPtr, &len); p = strchr(str, '('); if (p == NULL) { Jim_Panic(interp, "JimDictSugarParseVarKey() called for non-dict-sugar (%s)", str); } p++; keyLen = len - ((p - str) + 1); nameLen = (p - str) - 1; /* Create the objects with the variable name and key. */ t = Jim_Alloc(nameLen + 1); memcpy(t, str, nameLen); t[nameLen] = '\0'; varObjPtr = Jim_NewStringObjNoAlloc(interp, t, nameLen); t = Jim_Alloc(keyLen + 1); memcpy(t, p, keyLen); t[keyLen] = '\0'; keyObjPtr = Jim_NewStringObjNoAlloc(interp, t, keyLen); Jim_IncrRefCount(varObjPtr); Jim_IncrRefCount(keyObjPtr); *varPtrPtr = varObjPtr; *keyPtrPtr = keyObjPtr; } /* Helper of Jim_SetVariable() to deal with dict-syntax variable names. * Also used by Jim_UnsetVariable() with valObjPtr = NULL. */ static int JimDictSugarSet(Jim_Interp *interp, Jim_Obj *objPtr, Jim_Obj *valObjPtr) { int err; SetDictSubstFromAny(interp, objPtr); err = Jim_SetDictKeysVector(interp, objPtr->internalRep.dictSubstValue.varNameObjPtr, &objPtr->internalRep.dictSubstValue.indexObjPtr, 1, valObjPtr); if (err == JIM_OK) { /* Don't keep an extra ref to the result */ Jim_SetEmptyResult(interp); } else { if (!valObjPtr) { /* Better error message for unset a(2) where a exists but a(2) doesn't */ if (Jim_GetVariable(interp, objPtr->internalRep.dictSubstValue.varNameObjPtr, JIM_NONE)) { Jim_SetResultFormatted(interp, "can't unset \"%#s\": no such element in array", objPtr); return err; } } /* Make the error more informative and Tcl-compatible */ Jim_SetResultFormatted(interp, "can't %s \"%#s\": variable isn't array", (valObjPtr ? "set" : "unset"), objPtr); } return err; } /** * Expands the array variable (dict sugar) and returns the result, or NULL on error. * * If JIM_UNSHARED is set and the dictionary is shared, it will be duplicated * and stored back to the variable before expansion. */ static Jim_Obj *JimDictExpandArrayVariable(Jim_Interp *interp, Jim_Obj *varObjPtr, Jim_Obj *keyObjPtr, int flags) { Jim_Obj *dictObjPtr; Jim_Obj *resObjPtr = NULL; int ret; dictObjPtr = Jim_GetVariable(interp, varObjPtr, JIM_ERRMSG); if (!dictObjPtr) { return NULL; } ret = Jim_DictKey(interp, dictObjPtr, keyObjPtr, &resObjPtr, JIM_NONE); if (ret != JIM_OK) { resObjPtr = NULL; if (ret < 0) { Jim_SetResultFormatted(interp, "can't read \"%#s(%#s)\": variable isn't array", varObjPtr, keyObjPtr); } else { Jim_SetResultFormatted(interp, "can't read \"%#s(%#s)\": no such element in array", varObjPtr, keyObjPtr); } } else if ((flags & JIM_UNSHARED) && Jim_IsShared(dictObjPtr)) { dictObjPtr = Jim_DuplicateObj(interp, dictObjPtr); if (Jim_SetVariable(interp, varObjPtr, dictObjPtr) != JIM_OK) { /* This can probably never happen */ Jim_Panic(interp, "SetVariable failed for JIM_UNSHARED"); } /* We know that the key exists. Get the result in the now-unshared dictionary */ Jim_DictKey(interp, dictObjPtr, keyObjPtr, &resObjPtr, JIM_NONE); } return resObjPtr; } /* Helper of Jim_GetVariable() to deal with dict-syntax variable names */ static Jim_Obj *JimDictSugarGet(Jim_Interp *interp, Jim_Obj *objPtr, int flags) { SetDictSubstFromAny(interp, objPtr); return JimDictExpandArrayVariable(interp, objPtr->internalRep.dictSubstValue.varNameObjPtr, objPtr->internalRep.dictSubstValue.indexObjPtr, flags); } /* --------- $var(INDEX) substitution, using a specialized object ----------- */ void FreeDictSubstInternalRep(Jim_Interp *interp, Jim_Obj *objPtr) { Jim_DecrRefCount(interp, objPtr->internalRep.dictSubstValue.varNameObjPtr); Jim_DecrRefCount(interp, objPtr->internalRep.dictSubstValue.indexObjPtr); } void DupDictSubstInternalRep(Jim_Interp *interp, Jim_Obj *srcPtr, Jim_Obj *dupPtr) { JIM_NOTUSED(interp); dupPtr->internalRep.dictSubstValue.varNameObjPtr = srcPtr->internalRep.dictSubstValue.varNameObjPtr; dupPtr->internalRep.dictSubstValue.indexObjPtr = srcPtr->internalRep.dictSubstValue.indexObjPtr; dupPtr->typePtr = &dictSubstObjType; } /* Note: The object *must* be in dict-sugar format */ static void SetDictSubstFromAny(Jim_Interp *interp, Jim_Obj *objPtr) { if (objPtr->typePtr != &dictSubstObjType) { Jim_Obj *varObjPtr, *keyObjPtr; if (objPtr->typePtr == &interpolatedObjType) { /* An interpolated object in dict-sugar form */ const ScriptToken *token = objPtr->internalRep.twoPtrValue.ptr1; varObjPtr = token[0].objPtr; keyObjPtr = objPtr->internalRep.twoPtrValue.ptr2; Jim_IncrRefCount(varObjPtr); Jim_IncrRefCount(keyObjPtr); } else { JimDictSugarParseVarKey(interp, objPtr, &varObjPtr, &keyObjPtr); } Jim_FreeIntRep(interp, objPtr); objPtr->typePtr = &dictSubstObjType; objPtr->internalRep.dictSubstValue.varNameObjPtr = varObjPtr; objPtr->internalRep.dictSubstValue.indexObjPtr = keyObjPtr; } } /* This function is used to expand [dict get] sugar in the form * of $var(INDEX). The function is mainly used by Jim_EvalObj() * to deal with tokens of type JIM_TT_DICTSUGAR. objPtr points to an * object that is *guaranteed* to be in the form VARNAME(INDEX). * The 'index' part is [subst]ituted, and is used to lookup a key inside * the [dict]ionary contained in variable VARNAME. */ static Jim_Obj *JimExpandDictSugar(Jim_Interp *interp, Jim_Obj *objPtr) { Jim_Obj *resObjPtr = NULL; Jim_Obj *substKeyObjPtr = NULL; SetDictSubstFromAny(interp, objPtr); if (Jim_SubstObj(interp, objPtr->internalRep.dictSubstValue.indexObjPtr, &substKeyObjPtr, JIM_NONE) != JIM_OK) { return NULL; } Jim_IncrRefCount(substKeyObjPtr); resObjPtr = JimDictExpandArrayVariable(interp, objPtr->internalRep.dictSubstValue.varNameObjPtr, substKeyObjPtr, 0); Jim_DecrRefCount(interp, substKeyObjPtr); return resObjPtr; } /* ----------------------------------------------------------------------------- * CallFrame * ---------------------------------------------------------------------------*/ static Jim_CallFrame *JimCreateCallFrame(Jim_Interp *interp, Jim_CallFrame *parent) { Jim_CallFrame *cf; if (interp->freeFramesList) { cf = interp->freeFramesList; interp->freeFramesList = cf->nextFramePtr; } else { cf = Jim_Alloc(sizeof(*cf)); cf->vars.table = NULL; } cf->id = interp->callFrameEpoch++; cf->parentCallFrame = parent; cf->level = parent ? parent->level + 1 : 0; cf->argv = NULL; cf->argc = 0; cf->procArgsObjPtr = NULL; cf->procBodyObjPtr = NULL; cf->nextFramePtr = NULL; cf->staticVars = NULL; if (cf->vars.table == NULL) Jim_InitHashTable(&cf->vars, &JimVariablesHashTableType, interp); return cf; } /* Used to invalidate every caching related to callframe stability. */ static void JimChangeCallFrameId(Jim_Interp *interp, Jim_CallFrame *cf) { cf->id = interp->callFrameEpoch++; } #define JIM_FCF_NONE 0 /* no flags */ #define JIM_FCF_NOHT 1 /* don't free the hash table */ static void JimFreeCallFrame(Jim_Interp *interp, Jim_CallFrame *cf, int flags) { if (cf->procArgsObjPtr) Jim_DecrRefCount(interp, cf->procArgsObjPtr); if (cf->procBodyObjPtr) Jim_DecrRefCount(interp, cf->procBodyObjPtr); if (!(flags & JIM_FCF_NOHT)) Jim_FreeHashTable(&cf->vars); else { int i; Jim_HashEntry **table = cf->vars.table, *he; for (i = 0; i < JIM_HT_INITIAL_SIZE; i++) { he = table[i]; while (he != NULL) { Jim_HashEntry *nextEntry = he->next; Jim_Var *varPtr = (void *)he->val; Jim_DecrRefCount(interp, varPtr->objPtr); Jim_Free(he->val); Jim_Free((void *)he->key); /* ATTENTION: const cast */ Jim_Free(he); table[i] = NULL; he = nextEntry; } } cf->vars.used = 0; } cf->nextFramePtr = interp->freeFramesList; interp->freeFramesList = cf; } /* ----------------------------------------------------------------------------- * References * ---------------------------------------------------------------------------*/ #ifdef JIM_REFERENCES /* References HashTable Type. * * Keys are jim_wide integers, dynamically allocated for now but in the * future it's worth to cache this 8 bytes objects. Values are poitners * to Jim_References. */ static void JimReferencesHTValDestructor(void *interp, void *val) { Jim_Reference *refPtr = (void *)val; Jim_DecrRefCount(interp, refPtr->objPtr); if (refPtr->finalizerCmdNamePtr != NULL) { Jim_DecrRefCount(interp, refPtr->finalizerCmdNamePtr); } Jim_Free(val); } static unsigned int JimReferencesHTHashFunction(const void *key) { /* Only the least significant bits are used. */ const jim_wide *widePtr = key; unsigned int intValue = (unsigned int)*widePtr; return Jim_IntHashFunction(intValue); } static const void *JimReferencesHTKeyDup(void *privdata, const void *key) { void *copy = Jim_Alloc(sizeof(jim_wide)); JIM_NOTUSED(privdata); memcpy(copy, key, sizeof(jim_wide)); return copy; } static int JimReferencesHTKeyCompare(void *privdata, const void *key1, const void *key2) { JIM_NOTUSED(privdata); return memcmp(key1, key2, sizeof(jim_wide)) == 0; } static void JimReferencesHTKeyDestructor(void *privdata, const void *key) { JIM_NOTUSED(privdata); Jim_Free((void *)key); } static const Jim_HashTableType JimReferencesHashTableType = { JimReferencesHTHashFunction, /* hash function */ JimReferencesHTKeyDup, /* key dup */ NULL, /* val dup */ JimReferencesHTKeyCompare, /* key compare */ JimReferencesHTKeyDestructor, /* key destructor */ JimReferencesHTValDestructor /* val destructor */ }; /* ----------------------------------------------------------------------------- * Reference object type and References API * ---------------------------------------------------------------------------*/ /* The string representation of references has two features in order * to make the GC faster. The first is that every reference starts * with a non common character '<', in order to make the string matching * faster. The second is that the reference string rep is 42 characters * in length, this allows to avoid to check every object with a string * repr < 42, and usually there aren't many of these objects. */ #define JIM_REFERENCE_SPACE (35+JIM_REFERENCE_TAGLEN) static int JimFormatReference(char *buf, Jim_Reference *refPtr, jim_wide id) { const char *fmt = ".%020" JIM_WIDE_MODIFIER ">"; sprintf(buf, fmt, refPtr->tag, id); return JIM_REFERENCE_SPACE; } static void UpdateStringOfReference(struct Jim_Obj *objPtr); static const Jim_ObjType referenceObjType = { "reference", NULL, NULL, UpdateStringOfReference, JIM_TYPE_REFERENCES, }; void UpdateStringOfReference(struct Jim_Obj *objPtr) { int len; char buf[JIM_REFERENCE_SPACE + 1]; Jim_Reference *refPtr; refPtr = objPtr->internalRep.refValue.refPtr; len = JimFormatReference(buf, refPtr, objPtr->internalRep.refValue.id); objPtr->bytes = Jim_Alloc(len + 1); memcpy(objPtr->bytes, buf, len + 1); objPtr->length = len; } /* returns true if 'c' is a valid reference tag character. * i.e. inside the range [_a-zA-Z0-9] */ static int isrefchar(int c) { return (c == '_' || isalnum(c)); } static int SetReferenceFromAny(Jim_Interp *interp, Jim_Obj *objPtr) { jim_wide wideValue; int i, len; const char *str, *start, *end; char refId[21]; Jim_Reference *refPtr; Jim_HashEntry *he; /* Get the string representation */ str = Jim_GetString(objPtr, &len); /* Check if it looks like a reference */ if (len < JIM_REFERENCE_SPACE) goto badformat; /* Trim spaces */ start = str; end = str + len - 1; while (*start == ' ') start++; while (*end == ' ' && end > start) end--; if (end - start + 1 != JIM_REFERENCE_SPACE) goto badformat; /* .%020> */ if (memcmp(start, "references, &wideValue); if (he == NULL) { Jim_SetResultFormatted(interp, "invalid reference id \"%#s\"", objPtr); return JIM_ERR; } refPtr = he->val; /* Free the old internal repr and set the new one. */ Jim_FreeIntRep(interp, objPtr); objPtr->typePtr = &referenceObjType; objPtr->internalRep.refValue.id = wideValue; objPtr->internalRep.refValue.refPtr = refPtr; return JIM_OK; badformat: Jim_SetResultFormatted(interp, "expected reference but got \"%#s\"", objPtr); return JIM_ERR; } /* Returns a new reference pointing to objPtr, having cmdNamePtr * as finalizer command (or NULL if there is no finalizer). * The returned reference object has refcount = 0. */ Jim_Obj *Jim_NewReference(Jim_Interp *interp, Jim_Obj *objPtr, Jim_Obj *tagPtr, Jim_Obj *cmdNamePtr) { struct Jim_Reference *refPtr; jim_wide wideValue = interp->referenceNextId; Jim_Obj *refObjPtr; const char *tag; int tagLen, i; /* Perform the Garbage Collection if needed. */ Jim_CollectIfNeeded(interp); refPtr = Jim_Alloc(sizeof(*refPtr)); refPtr->objPtr = objPtr; Jim_IncrRefCount(objPtr); refPtr->finalizerCmdNamePtr = cmdNamePtr; if (cmdNamePtr) Jim_IncrRefCount(cmdNamePtr); Jim_AddHashEntry(&interp->references, &wideValue, refPtr); refObjPtr = Jim_NewObj(interp); refObjPtr->typePtr = &referenceObjType; refObjPtr->bytes = NULL; refObjPtr->internalRep.refValue.id = interp->referenceNextId; refObjPtr->internalRep.refValue.refPtr = refPtr; interp->referenceNextId++; /* Set the tag. Trimmed at JIM_REFERENCE_TAGLEN. Everything * that does not pass the 'isrefchar' test is replaced with '_' */ tag = Jim_GetString(tagPtr, &tagLen); if (tagLen > JIM_REFERENCE_TAGLEN) tagLen = JIM_REFERENCE_TAGLEN; for (i = 0; i < JIM_REFERENCE_TAGLEN; i++) { if (i < tagLen && isrefchar(tag[i])) refPtr->tag[i] = tag[i]; else refPtr->tag[i] = '_'; } refPtr->tag[JIM_REFERENCE_TAGLEN] = '\0'; return refObjPtr; } Jim_Reference *Jim_GetReference(Jim_Interp *interp, Jim_Obj *objPtr) { if (objPtr->typePtr != &referenceObjType && SetReferenceFromAny(interp, objPtr) == JIM_ERR) return NULL; return objPtr->internalRep.refValue.refPtr; } int Jim_SetFinalizer(Jim_Interp *interp, Jim_Obj *objPtr, Jim_Obj *cmdNamePtr) { Jim_Reference *refPtr; if ((refPtr = Jim_GetReference(interp, objPtr)) == NULL) return JIM_ERR; Jim_IncrRefCount(cmdNamePtr); if (refPtr->finalizerCmdNamePtr) Jim_DecrRefCount(interp, refPtr->finalizerCmdNamePtr); refPtr->finalizerCmdNamePtr = cmdNamePtr; return JIM_OK; } int Jim_GetFinalizer(Jim_Interp *interp, Jim_Obj *objPtr, Jim_Obj **cmdNamePtrPtr) { Jim_Reference *refPtr; if ((refPtr = Jim_GetReference(interp, objPtr)) == NULL) return JIM_ERR; *cmdNamePtrPtr = refPtr->finalizerCmdNamePtr; return JIM_OK; } /* ----------------------------------------------------------------------------- * References Garbage Collection * ---------------------------------------------------------------------------*/ /* This the hash table type for the "MARK" phase of the GC */ static const Jim_HashTableType JimRefMarkHashTableType = { JimReferencesHTHashFunction, /* hash function */ JimReferencesHTKeyDup, /* key dup */ NULL, /* val dup */ JimReferencesHTKeyCompare, /* key compare */ JimReferencesHTKeyDestructor, /* key destructor */ NULL /* val destructor */ }; /* Performs the garbage collection. */ int Jim_Collect(Jim_Interp *interp) { Jim_HashTable marks; Jim_HashTableIterator *htiter; Jim_HashEntry *he; Jim_Obj *objPtr; int collected = 0; /* Avoid recursive calls */ if (interp->lastCollectId == -1) { /* Jim_Collect() already running. Return just now. */ return 0; } interp->lastCollectId = -1; /* Mark all the references found into the 'mark' hash table. * The references are searched in every live object that * is of a type that can contain references. */ Jim_InitHashTable(&marks, &JimRefMarkHashTableType, NULL); objPtr = interp->liveList; while (objPtr) { if (objPtr->typePtr == NULL || objPtr->typePtr->flags & JIM_TYPE_REFERENCES) { const char *str, *p; int len; /* If the object is of type reference, to get the * Id is simple... */ if (objPtr->typePtr == &referenceObjType) { Jim_AddHashEntry(&marks, &objPtr->internalRep.refValue.id, NULL); #ifdef JIM_DEBUG_GC printf("MARK (reference): %d refcount: %d" JIM_NL, (int)objPtr->internalRep.refValue.id, objPtr->refCount); #endif objPtr = objPtr->nextObjPtr; continue; } /* Get the string repr of the object we want * to scan for references. */ p = str = Jim_GetString(objPtr, &len); /* Skip objects too little to contain references. */ if (len < JIM_REFERENCE_SPACE) { objPtr = objPtr->nextObjPtr; continue; } /* Extract references from the object string repr. */ while (1) { int i; jim_wide id; char buf[21]; if ((p = strstr(p, "nextObjPtr; } /* Run the references hash table to destroy every reference that * is not referenced outside (not present in the mark HT). */ htiter = Jim_GetHashTableIterator(&interp->references); while ((he = Jim_NextHashEntry(htiter)) != NULL) { const jim_wide *refId; Jim_Reference *refPtr; refId = he->key; /* Check if in the mark phase we encountered * this reference. */ if (Jim_FindHashEntry(&marks, refId) == NULL) { #ifdef JIM_DEBUG_GC printf("COLLECTING %d" JIM_NL, (int)*refId); #endif collected++; /* Drop the reference, but call the * finalizer first if registered. */ refPtr = he->val; if (refPtr->finalizerCmdNamePtr) { char *refstr = Jim_Alloc(JIM_REFERENCE_SPACE + 1); Jim_Obj *objv[3], *oldResult; JimFormatReference(refstr, refPtr, *refId); objv[0] = refPtr->finalizerCmdNamePtr; objv[1] = Jim_NewStringObjNoAlloc(interp, refstr, 32); objv[2] = refPtr->objPtr; Jim_IncrRefCount(objv[0]); Jim_IncrRefCount(objv[1]); Jim_IncrRefCount(objv[2]); /* Drop the reference itself */ Jim_DeleteHashEntry(&interp->references, refId); /* Call the finalizer. Errors ignored. */ oldResult = interp->result; Jim_IncrRefCount(oldResult); Jim_EvalObjVector(interp, 3, objv); Jim_SetResult(interp, oldResult); Jim_DecrRefCount(interp, oldResult); Jim_DecrRefCount(interp, objv[0]); Jim_DecrRefCount(interp, objv[1]); Jim_DecrRefCount(interp, objv[2]); } else { Jim_DeleteHashEntry(&interp->references, refId); } } } Jim_FreeHashTableIterator(htiter); Jim_FreeHashTable(&marks); interp->lastCollectId = interp->referenceNextId; interp->lastCollectTime = time(NULL); return collected; } #define JIM_COLLECT_ID_PERIOD 5000 #define JIM_COLLECT_TIME_PERIOD 300 void Jim_CollectIfNeeded(Jim_Interp *interp) { jim_wide elapsedId; int elapsedTime; elapsedId = interp->referenceNextId - interp->lastCollectId; elapsedTime = time(NULL) - interp->lastCollectTime; if (elapsedId > JIM_COLLECT_ID_PERIOD || elapsedTime > JIM_COLLECT_TIME_PERIOD) { Jim_Collect(interp); } } #endif static int JimIsBigEndian(void) { union { unsigned short s; unsigned char c[2]; } uval = {0x0102}; return uval.c[0] == 1; } /* ----------------------------------------------------------------------------- * Interpreter related functions * ---------------------------------------------------------------------------*/ Jim_Interp *Jim_CreateInterp(void) { Jim_Interp *i = Jim_Alloc(sizeof(*i)); i->errorLine = 0; i->errorFileName = Jim_StrDup(""); i->addStackTrace = 0; i->maxNestingDepth = JIM_MAX_NESTING_DEPTH; i->returnCode = JIM_OK; i->returnLevel = 0; i->exitCode = 0; i->procEpoch = 0; i->callFrameEpoch = 0; i->liveList = i->freeList = NULL; i->referenceNextId = 0; i->lastCollectId = 0; i->lastCollectTime = time(NULL); i->freeFramesList = NULL; i->prngState = NULL; i->id = 0; i->sigmask = 0; i->signal_level = 0; i->signal_set_result = NULL; i->localProcs = NULL; /* Note that we can create objects only after the * interpreter liveList and freeList pointers are * initialized to NULL. */ Jim_InitHashTable(&i->commands, &JimCommandsHashTableType, i); #ifdef JIM_REFERENCES Jim_InitHashTable(&i->references, &JimReferencesHashTableType, i); #endif Jim_InitHashTable(&i->sharedStrings, &JimSharedStringsHashTableType, NULL); Jim_InitHashTable(&i->assocData, &JimAssocDataHashTableType, i); Jim_InitHashTable(&i->packages, &JimStringKeyValCopyHashTableType, NULL); i->framePtr = i->topFramePtr = JimCreateCallFrame(i, NULL); i->emptyObj = Jim_NewEmptyStringObj(i); i->trueObj = Jim_NewIntObj(i, 1); i->falseObj = Jim_NewIntObj(i, 0); i->result = i->emptyObj; i->stackTrace = Jim_NewListObj(i, NULL, 0); i->unknown = Jim_NewStringObj(i, "unknown", -1); i->unknown_called = 0; i->errorProc = i->emptyObj; i->currentScriptObj = Jim_NewEmptyStringObj(i); Jim_IncrRefCount(i->emptyObj); Jim_IncrRefCount(i->result); Jim_IncrRefCount(i->stackTrace); Jim_IncrRefCount(i->unknown); Jim_IncrRefCount(i->currentScriptObj); Jim_IncrRefCount(i->errorProc); Jim_IncrRefCount(i->trueObj); Jim_IncrRefCount(i->falseObj); /* Initialize key variables every interpreter should contain */ Jim_SetVariableStrWithStr(i, JIM_LIBPATH, TCL_LIBRARY); Jim_SetVariableStrWithStr(i, JIM_INTERACTIVE, "0"); Jim_SetVariableStrWithStr(i, "tcl_platform(os)", TCL_PLATFORM_OS); Jim_SetVariableStrWithStr(i, "tcl_platform(platform)", TCL_PLATFORM_PLATFORM); Jim_SetVariableStrWithStr(i, "tcl_platform(byteOrder)", JimIsBigEndian() ? "bigEndian" : "littleEndian"); Jim_SetVariableStrWithStr(i, "tcl_platform(threaded)", "0"); Jim_SetVariableStr(i, "tcl_platform(pointerSize)", Jim_NewIntObj(i, sizeof(void *))); Jim_SetVariableStr(i, "tcl_platform(wordSize)", Jim_NewIntObj(i, sizeof(jim_wide))); return i; } void Jim_FreeInterp(Jim_Interp *i) { Jim_CallFrame *cf = i->framePtr, *prevcf, *nextcf; Jim_Obj *objPtr, *nextObjPtr; Jim_DecrRefCount(i, i->emptyObj); Jim_DecrRefCount(i, i->trueObj); Jim_DecrRefCount(i, i->falseObj); Jim_DecrRefCount(i, i->result); Jim_DecrRefCount(i, i->stackTrace); Jim_DecrRefCount(i, i->errorProc); Jim_DecrRefCount(i, i->unknown); Jim_Free((void *)i->errorFileName); Jim_DecrRefCount(i, i->currentScriptObj); Jim_FreeHashTable(&i->commands); #ifdef JIM_REFERENCES Jim_FreeHashTable(&i->references); #endif Jim_FreeHashTable(&i->assocData); Jim_FreeHashTable(&i->packages); Jim_Free(i->prngState); JimDeleteLocalProcs(i); /* Free the call frames list */ while (cf) { prevcf = cf->parentCallFrame; JimFreeCallFrame(i, cf, JIM_FCF_NONE); cf = prevcf; } /* Check that the live object list is empty, otherwise * there is a memory leak. */ if (i->liveList != NULL) { objPtr = i->liveList; printf(JIM_NL "-------------------------------------" JIM_NL); printf("Objects still in the free list:" JIM_NL); while (objPtr) { const char *type = objPtr->typePtr ? objPtr->typePtr->name : "string"; printf("%p (%d) %-10s: '%.20s'" JIM_NL, (void *)objPtr, objPtr->refCount, type, objPtr->bytes ? objPtr->bytes : "(null)"); if (objPtr->typePtr == &sourceObjType) { printf("FILE %s LINE %d" JIM_NL, objPtr->internalRep.sourceValue.fileName, objPtr->internalRep.sourceValue.lineNumber); } objPtr = objPtr->nextObjPtr; } printf("-------------------------------------" JIM_NL JIM_NL); Jim_Panic(i, "Live list non empty freeing the interpreter! Leak?"); } /* Free all the freed objects. */ objPtr = i->freeList; while (objPtr) { nextObjPtr = objPtr->nextObjPtr; Jim_Free(objPtr); objPtr = nextObjPtr; } /* Free cached CallFrame structures */ cf = i->freeFramesList; while (cf) { nextcf = cf->nextFramePtr; if (cf->vars.table != NULL) Jim_Free(cf->vars.table); Jim_Free(cf); cf = nextcf; } /* Free the sharedString hash table. Make sure to free it * after every other Jim_Object was freed. */ Jim_FreeHashTable(&i->sharedStrings); /* Free the interpreter structure. */ Jim_Free(i); } /* Returns the call frame relative to the level represented by * levelObjPtr. If levelObjPtr == NULL, the * level is assumed to be '1'. * * This function accepts the 'level' argument in the form * of the commands [uplevel] and [upvar]. * * For a function accepting a relative integer as level suitable * for implementation of [info level ?level?] check the * JimGetCallFrameByInteger() function. * * Returns NULL on error. */ Jim_CallFrame *Jim_GetCallFrameByLevel(Jim_Interp *interp, Jim_Obj *levelObjPtr) { long level; const char *str; Jim_CallFrame *framePtr; if (levelObjPtr) { str = Jim_GetString(levelObjPtr, NULL); if (str[0] == '#') { char *endptr; level = strtol(str + 1, &endptr, 0); if (str[1] == '\0' || endptr[0] != '\0') { level = -1; } } else { if (Jim_GetLong(interp, levelObjPtr, &level) != JIM_OK || level < 0) { level = -1; } else { /* Convert from a relative to an absolute level */ level = interp->framePtr->level - level; } } } else { str = "1"; /* Needed to format the error message. */ level = interp->framePtr->level - 1; } if (level == 0) { return interp->topFramePtr; } if (level > 0) { /* Lookup */ for (framePtr = interp->framePtr; framePtr; framePtr = framePtr->parentCallFrame) { if (framePtr->level == level) { return framePtr; } } } Jim_SetResultFormatted(interp, "bad level \"%s\"", str); return NULL; } /* Similar to Jim_GetCallFrameByLevel() but the level is specified * as a relative integer like in the [info level ?level?] command. **/ static Jim_CallFrame *JimGetCallFrameByInteger(Jim_Interp *interp, Jim_Obj *levelObjPtr) { long level; Jim_CallFrame *framePtr; if (Jim_GetLong(interp, levelObjPtr, &level) == JIM_OK) { if (level <= 0) { /* Convert from a relative to an absolute level */ level = interp->framePtr->level + level; } if (level == 0) { return interp->topFramePtr; } /* Lookup */ for (framePtr = interp->framePtr; framePtr; framePtr = framePtr->parentCallFrame) { if (framePtr->level == level) { return framePtr; } } } Jim_SetResultFormatted(interp, "bad level \"%#s\"", levelObjPtr); return NULL; } static void JimSetErrorFileName(Jim_Interp *interp, const char *filename) { Jim_Free((void *)interp->errorFileName); interp->errorFileName = Jim_StrDup(filename); } static void JimSetErrorLineNumber(Jim_Interp *interp, int linenr) { interp->errorLine = linenr; } static void JimResetStackTrace(Jim_Interp *interp) { Jim_DecrRefCount(interp, interp->stackTrace); interp->stackTrace = Jim_NewListObj(interp, NULL, 0); Jim_IncrRefCount(interp->stackTrace); } static void JimSetStackTrace(Jim_Interp *interp, Jim_Obj *stackTraceObj) { int len; /* Increment reference first in case these are the same object */ Jim_IncrRefCount(stackTraceObj); Jim_DecrRefCount(interp, interp->stackTrace); interp->stackTrace = stackTraceObj; interp->errorFlag = 1; /* This is a bit ugly. * If the filename of the last entry of the stack trace is empty, * the next stack level should be added. */ len = Jim_ListLength(interp, interp->stackTrace); if (len >= 3) { Jim_Obj *filenameObj; Jim_ListIndex(interp, interp->stackTrace, len - 2, &filenameObj, JIM_NONE); Jim_GetString(filenameObj, &len); if (len == 0) { interp->addStackTrace = 1; } } } /* Returns 1 if the stack trace information was used or 0 if not */ static void JimAppendStackTrace(Jim_Interp *interp, const char *procname, const char *filename, int linenr) { if (strcmp(procname, "unknown") == 0) { procname = ""; } if (!*procname && !*filename) { /* No useful info here */ return; } if (Jim_IsShared(interp->stackTrace)) { Jim_DecrRefCount(interp, interp->stackTrace); interp->stackTrace = Jim_DuplicateObj(interp, interp->stackTrace); Jim_IncrRefCount(interp->stackTrace); } /* If we have no procname but the previous element did, merge with that frame */ if (!*procname && *filename) { /* Just a filename. Check the previous entry */ int len = Jim_ListLength(interp, interp->stackTrace); if (len >= 3) { Jim_Obj *procnameObj; Jim_Obj *filenameObj; if (Jim_ListIndex(interp, interp->stackTrace, len - 3, &procnameObj, JIM_NONE) == JIM_OK && Jim_ListIndex(interp, interp->stackTrace, len - 2, &filenameObj, JIM_NONE) == JIM_OK) { const char *prev_procname = Jim_GetString(procnameObj, NULL); const char *prev_filename = Jim_GetString(filenameObj, NULL); if (*prev_procname && !*prev_filename) { ListSetIndex(interp, interp->stackTrace, len - 2, Jim_NewStringObj(interp, filename, -1), 0); ListSetIndex(interp, interp->stackTrace, len - 1, Jim_NewIntObj(interp, linenr), 0); return; } } } } Jim_ListAppendElement(interp, interp->stackTrace, Jim_NewStringObj(interp, procname, -1)); Jim_ListAppendElement(interp, interp->stackTrace, Jim_NewStringObj(interp, filename, -1)); Jim_ListAppendElement(interp, interp->stackTrace, Jim_NewIntObj(interp, linenr)); } int Jim_SetAssocData(Jim_Interp *interp, const char *key, Jim_InterpDeleteProc * delProc, void *data) { AssocDataValue *assocEntryPtr = (AssocDataValue *) Jim_Alloc(sizeof(AssocDataValue)); assocEntryPtr->delProc = delProc; assocEntryPtr->data = data; return Jim_AddHashEntry(&interp->assocData, key, assocEntryPtr); } void *Jim_GetAssocData(Jim_Interp *interp, const char *key) { Jim_HashEntry *entryPtr = Jim_FindHashEntry(&interp->assocData, key); if (entryPtr != NULL) { AssocDataValue *assocEntryPtr = (AssocDataValue *) entryPtr->val; return assocEntryPtr->data; } return NULL; } int Jim_DeleteAssocData(Jim_Interp *interp, const char *key) { return Jim_DeleteHashEntry(&interp->assocData, key); } int Jim_GetExitCode(Jim_Interp *interp) { return interp->exitCode; } /* ----------------------------------------------------------------------------- * Shared strings. * Every interpreter has an hash table where to put shared dynamically * allocate strings that are likely to be used a lot of times. * For example, in the 'source' object type, there is a pointer to * the filename associated with that object. Every script has a lot * of this objects with the identical file name, so it is wise to share * this info. * * The API is trivial: Jim_GetSharedString(interp, "foobar") * returns the pointer to the shared string. Every time a reference * to the string is no longer used, the user should call * Jim_ReleaseSharedString(interp, stringPointer). Once no one is using * a given string, it is removed from the hash table. * ---------------------------------------------------------------------------*/ const char *Jim_GetSharedString(Jim_Interp *interp, const char *str) { Jim_HashEntry *he = Jim_FindHashEntry(&interp->sharedStrings, str); if (he == NULL) { char *strCopy = Jim_StrDup(str); Jim_AddHashEntry(&interp->sharedStrings, strCopy, (void *)1); return strCopy; } else { long refCount = (long)he->val; refCount++; he->val = (void *)refCount; return he->key; } } void Jim_ReleaseSharedString(Jim_Interp *interp, const char *str) { long refCount; Jim_HashEntry *he = Jim_FindHashEntry(&interp->sharedStrings, str); if (he == NULL) { Jim_Panic(interp, "Jim_ReleaseSharedString called with " "unknown shared string '%s'", str); } else { refCount = (long)he->val; refCount--; if (refCount == 0) { Jim_DeleteHashEntry(&interp->sharedStrings, str); } else { he->val = (void *)refCount; } } } /* ----------------------------------------------------------------------------- * Integer object * ---------------------------------------------------------------------------*/ #define JIM_INTEGER_SPACE 24 static void UpdateStringOfInt(struct Jim_Obj *objPtr); static int SetIntFromAny(Jim_Interp *interp, Jim_Obj *objPtr, int flags); static const Jim_ObjType intObjType = { "int", NULL, NULL, UpdateStringOfInt, JIM_TYPE_NONE, }; /* A coerced double is closer to an int than a double. * It is an int value temporarily masquerading as a double value. * i.e. it has the same string value as an int and Jim_GetWide() * succeeds, but also Jim_GetDouble() returns the value directly. */ static const Jim_ObjType coercedDoubleObjType = { "coerced-double", NULL, NULL, UpdateStringOfInt, JIM_TYPE_NONE, }; void UpdateStringOfInt(struct Jim_Obj *objPtr) { int len; char buf[JIM_INTEGER_SPACE + 1]; len = Jim_WideToString(buf, objPtr->internalRep.wideValue); objPtr->bytes = Jim_Alloc(len + 1); memcpy(objPtr->bytes, buf, len + 1); objPtr->length = len; } int SetIntFromAny(Jim_Interp *interp, Jim_Obj *objPtr, int flags) { jim_wide wideValue; const char *str; if (objPtr->typePtr == &coercedDoubleObjType) { /* Simple switcheroo */ objPtr->typePtr = &intObjType; return JIM_OK; } /* Get the string representation */ str = Jim_GetString(objPtr, NULL); /* Try to convert into a jim_wide */ if (Jim_StringToWide(str, &wideValue, 0) != JIM_OK) { if (flags & JIM_ERRMSG) { Jim_SetResultFormatted(interp, "expected integer but got \"%#s\"", objPtr); } return JIM_ERR; } if ((wideValue == JIM_WIDE_MIN || wideValue == JIM_WIDE_MAX) && errno == ERANGE) { Jim_SetResultString(interp, "Integer value too big to be represented", -1); return JIM_ERR; } /* Free the old internal repr and set the new one. */ Jim_FreeIntRep(interp, objPtr); objPtr->typePtr = &intObjType; objPtr->internalRep.wideValue = wideValue; return JIM_OK; } #ifdef JIM_OPTIMIZATION static int JimIsWide(Jim_Obj *objPtr) { return objPtr->typePtr == &intObjType; } #endif int Jim_GetWide(Jim_Interp *interp, Jim_Obj *objPtr, jim_wide * widePtr) { if (objPtr->typePtr != &intObjType && SetIntFromAny(interp, objPtr, JIM_ERRMSG) == JIM_ERR) return JIM_ERR; *widePtr = JimWideValue(objPtr); return JIM_OK; } /* Get a wide but does not set an error if the format is bad. */ static int JimGetWideNoErr(Jim_Interp *interp, Jim_Obj *objPtr, jim_wide * widePtr) { if (objPtr->typePtr != &intObjType && SetIntFromAny(interp, objPtr, JIM_NONE) == JIM_ERR) return JIM_ERR; *widePtr = JimWideValue(objPtr); return JIM_OK; } int Jim_GetLong(Jim_Interp *interp, Jim_Obj *objPtr, long *longPtr) { jim_wide wideValue; int retval; retval = Jim_GetWide(interp, objPtr, &wideValue); if (retval == JIM_OK) { *longPtr = (long)wideValue; return JIM_OK; } return JIM_ERR; } void Jim_SetWide(Jim_Interp *interp, Jim_Obj *objPtr, jim_wide wideValue) { if (Jim_IsShared(objPtr)) Jim_Panic(interp, "Jim_SetWide called with shared object"); if (objPtr->typePtr != &intObjType) { Jim_FreeIntRep(interp, objPtr); objPtr->typePtr = &intObjType; } Jim_InvalidateStringRep(objPtr); objPtr->internalRep.wideValue = wideValue; } Jim_Obj *Jim_NewIntObj(Jim_Interp *interp, jim_wide wideValue) { Jim_Obj *objPtr; objPtr = Jim_NewObj(interp); objPtr->typePtr = &intObjType; objPtr->bytes = NULL; objPtr->internalRep.wideValue = wideValue; return objPtr; } /* ----------------------------------------------------------------------------- * Double object * ---------------------------------------------------------------------------*/ #define JIM_DOUBLE_SPACE 30 static void UpdateStringOfDouble(struct Jim_Obj *objPtr); static int SetDoubleFromAny(Jim_Interp *interp, Jim_Obj *objPtr); static const Jim_ObjType doubleObjType = { "double", NULL, NULL, UpdateStringOfDouble, JIM_TYPE_NONE, }; void UpdateStringOfDouble(struct Jim_Obj *objPtr) { int len; char buf[JIM_DOUBLE_SPACE + 1]; len = Jim_DoubleToString(buf, objPtr->internalRep.doubleValue); objPtr->bytes = Jim_Alloc(len + 1); memcpy(objPtr->bytes, buf, len + 1); objPtr->length = len; } int SetDoubleFromAny(Jim_Interp *interp, Jim_Obj *objPtr) { double doubleValue; jim_wide wideValue; const char *str; /* Preserve the string representation. * Needed so we can convert back to int without loss */ str = Jim_GetString(objPtr, NULL); #ifdef HAVE_LONG_LONG /* Assume a 53 bit mantissa */ #define MIN_INT_IN_DOUBLE -(1LL << 53) #define MAX_INT_IN_DOUBLE -(MIN_INT_IN_DOUBLE + 1) if (objPtr->typePtr == &intObjType && JimWideValue(objPtr) >= MIN_INT_IN_DOUBLE && JimWideValue(objPtr) <= MAX_INT_IN_DOUBLE) { /* Direct conversion to coerced double */ objPtr->typePtr = &coercedDoubleObjType; return JIM_OK; } else #endif if (Jim_StringToWide(str, &wideValue, 10) == JIM_OK) { /* Managed to convert to an int, so we can use this as a cooerced double */ Jim_FreeIntRep(interp, objPtr); objPtr->typePtr = &coercedDoubleObjType; objPtr->internalRep.wideValue = wideValue; return JIM_OK; } else { /* Try to convert into a double */ if (Jim_StringToDouble(str, &doubleValue) != JIM_OK) { Jim_SetResultFormatted(interp, "expected number but got \"%#s\"", objPtr); return JIM_ERR; } /* Free the old internal repr and set the new one. */ Jim_FreeIntRep(interp, objPtr); } objPtr->typePtr = &doubleObjType; objPtr->internalRep.doubleValue = doubleValue; return JIM_OK; } int Jim_GetDouble(Jim_Interp *interp, Jim_Obj *objPtr, double *doublePtr) { if (objPtr->typePtr == &coercedDoubleObjType) { *doublePtr = JimWideValue(objPtr); return JIM_OK; } if (objPtr->typePtr != &doubleObjType && SetDoubleFromAny(interp, objPtr) == JIM_ERR) return JIM_ERR; if (objPtr->typePtr == &coercedDoubleObjType) { *doublePtr = JimWideValue(objPtr); } else { *doublePtr = objPtr->internalRep.doubleValue; } return JIM_OK; } Jim_Obj *Jim_NewDoubleObj(Jim_Interp *interp, double doubleValue) { Jim_Obj *objPtr; objPtr = Jim_NewObj(interp); objPtr->typePtr = &doubleObjType; objPtr->bytes = NULL; objPtr->internalRep.doubleValue = doubleValue; return objPtr; } /* ----------------------------------------------------------------------------- * List object * ---------------------------------------------------------------------------*/ static void ListAppendElement(Jim_Obj *listPtr, Jim_Obj *objPtr); static void FreeListInternalRep(Jim_Interp *interp, Jim_Obj *objPtr); static void DupListInternalRep(Jim_Interp *interp, Jim_Obj *srcPtr, Jim_Obj *dupPtr); static void UpdateStringOfList(struct Jim_Obj *objPtr); static int SetListFromAny(Jim_Interp *interp, struct Jim_Obj *objPtr); /* Note that while the elements of the list may contain references, * the list object itself can't. This basically means that the * list object string representation as a whole can't contain references * that are not presents in the single elements. */ static const Jim_ObjType listObjType = { "list", FreeListInternalRep, DupListInternalRep, UpdateStringOfList, JIM_TYPE_NONE, }; void FreeListInternalRep(Jim_Interp *interp, Jim_Obj *objPtr) { int i; for (i = 0; i < objPtr->internalRep.listValue.len; i++) { Jim_DecrRefCount(interp, objPtr->internalRep.listValue.ele[i]); } Jim_Free(objPtr->internalRep.listValue.ele); } void DupListInternalRep(Jim_Interp *interp, Jim_Obj *srcPtr, Jim_Obj *dupPtr) { int i; JIM_NOTUSED(interp); dupPtr->internalRep.listValue.len = srcPtr->internalRep.listValue.len; dupPtr->internalRep.listValue.maxLen = srcPtr->internalRep.listValue.maxLen; dupPtr->internalRep.listValue.ele = Jim_Alloc(sizeof(Jim_Obj *) * srcPtr->internalRep.listValue.maxLen); memcpy(dupPtr->internalRep.listValue.ele, srcPtr->internalRep.listValue.ele, sizeof(Jim_Obj *) * srcPtr->internalRep.listValue.len); for (i = 0; i < dupPtr->internalRep.listValue.len; i++) { Jim_IncrRefCount(dupPtr->internalRep.listValue.ele[i]); } dupPtr->typePtr = &listObjType; } /* The following function checks if a given string can be encoded * into a list element without any kind of quoting, surrounded by braces, * or using escapes to quote. */ #define JIM_ELESTR_SIMPLE 0 #define JIM_ELESTR_BRACE 1 #define JIM_ELESTR_QUOTE 2 static int ListElementQuotingType(const char *s, int len) { int i, level, trySimple = 1; /* Try with the SIMPLE case */ if (len == 0) return JIM_ELESTR_BRACE; if (s[0] == '#') return JIM_ELESTR_BRACE; if (s[0] == '"' || s[0] == '{') { trySimple = 0; goto testbrace; } for (i = 0; i < len; i++) { switch (s[i]) { case ' ': case '$': case '"': case '[': case ']': case ';': case '\\': case '\r': case '\n': case '\t': case '\f': case '\v': trySimple = 0; case '{': case '}': goto testbrace; } } return JIM_ELESTR_SIMPLE; testbrace: /* Test if it's possible to do with braces */ if (s[len - 1] == '\\' || s[len - 1] == ']') return JIM_ELESTR_QUOTE; level = 0; for (i = 0; i < len; i++) { switch (s[i]) { case '{': level++; break; case '}': level--; if (level < 0) return JIM_ELESTR_QUOTE; break; case '\\': if (s[i + 1] == '\n') return JIM_ELESTR_QUOTE; else if (s[i + 1] != '\0') i++; break; } } if (level == 0) { if (!trySimple) return JIM_ELESTR_BRACE; for (i = 0; i < len; i++) { switch (s[i]) { case ' ': case '$': case '"': case '[': case ']': case ';': case '\\': case '\r': case '\n': case '\t': case '\f': case '\v': return JIM_ELESTR_BRACE; break; } } return JIM_ELESTR_SIMPLE; } return JIM_ELESTR_QUOTE; } /* Returns the malloc-ed representation of a string * using backslash to quote special chars. */ static char *BackslashQuoteString(const char *s, int len, int *qlenPtr) { char *q = Jim_Alloc(len * 2 + 1), *p; p = q; while (*s) { switch (*s) { case ' ': case '$': case '"': case '[': case ']': case '{': case '}': case ';': case '\\': *p++ = '\\'; *p++ = *s++; break; case '\n': *p++ = '\\'; *p++ = 'n'; s++; break; case '\r': *p++ = '\\'; *p++ = 'r'; s++; break; case '\t': *p++ = '\\'; *p++ = 't'; s++; break; case '\f': *p++ = '\\'; *p++ = 'f'; s++; break; case '\v': *p++ = '\\'; *p++ = 'v'; s++; break; default: *p++ = *s++; break; } } *p = '\0'; *qlenPtr = p - q; return q; } void UpdateStringOfList(struct Jim_Obj *objPtr) { int i, bufLen, realLength; const char *strRep; char *p; int *quotingType; Jim_Obj **ele = objPtr->internalRep.listValue.ele; /* (Over) Estimate the space needed. */ quotingType = Jim_Alloc(sizeof(int) * objPtr->internalRep.listValue.len + 1); bufLen = 0; for (i = 0; i < objPtr->internalRep.listValue.len; i++) { int len; strRep = Jim_GetString(ele[i], &len); quotingType[i] = ListElementQuotingType(strRep, len); switch (quotingType[i]) { case JIM_ELESTR_SIMPLE: bufLen += len; break; case JIM_ELESTR_BRACE: bufLen += len + 2; break; case JIM_ELESTR_QUOTE: bufLen += len * 2; break; } bufLen++; /* elements separator. */ } bufLen++; /* Generate the string rep. */ p = objPtr->bytes = Jim_Alloc(bufLen + 1); realLength = 0; for (i = 0; i < objPtr->internalRep.listValue.len; i++) { int len, qlen; char *q; strRep = Jim_GetString(ele[i], &len); switch (quotingType[i]) { case JIM_ELESTR_SIMPLE: memcpy(p, strRep, len); p += len; realLength += len; break; case JIM_ELESTR_BRACE: *p++ = '{'; memcpy(p, strRep, len); p += len; *p++ = '}'; realLength += len + 2; break; case JIM_ELESTR_QUOTE: q = BackslashQuoteString(strRep, len, &qlen); memcpy(p, q, qlen); Jim_Free(q); p += qlen; realLength += qlen; break; } /* Add a separating space */ if (i + 1 != objPtr->internalRep.listValue.len) { *p++ = ' '; realLength++; } } *p = '\0'; /* nul term. */ objPtr->length = realLength; Jim_Free(quotingType); } int SetListFromAny(Jim_Interp *interp, struct Jim_Obj *objPtr) { struct JimParserCtx parser; const char *str; int strLen; const char *filename = NULL; int linenr = 1; /* Try to preserve information about filename / line number */ if (objPtr->typePtr == &sourceObjType) { filename = Jim_GetSharedString(interp, objPtr->internalRep.sourceValue.fileName); linenr = objPtr->internalRep.sourceValue.lineNumber; } /* Get the string representation */ str = Jim_GetString(objPtr, &strLen); /* Free the old internal repr just now and initialize the * new one just now. The string->list conversion can't fail. */ Jim_FreeIntRep(interp, objPtr); objPtr->typePtr = &listObjType; objPtr->internalRep.listValue.len = 0; objPtr->internalRep.listValue.maxLen = 0; objPtr->internalRep.listValue.ele = NULL; /* Convert into a list */ JimParserInit(&parser, str, strLen, linenr); while (!JimParserEof(&parser)) { Jim_Obj *elementPtr; JimParseList(&parser); if (JimParserTtype(&parser) != JIM_TT_STR && JimParserTtype(&parser) != JIM_TT_ESC) continue; elementPtr = JimParserGetTokenObj(interp, &parser); if (filename) { JimSetSourceInfo(interp, elementPtr, filename, JimParserTline(&parser)); } ListAppendElement(objPtr, elementPtr); } if (filename) { Jim_ReleaseSharedString(interp, filename); } return JIM_OK; } Jim_Obj *Jim_NewListObj(Jim_Interp *interp, Jim_Obj *const *elements, int len) { Jim_Obj *objPtr; int i; objPtr = Jim_NewObj(interp); objPtr->typePtr = &listObjType; objPtr->bytes = NULL; objPtr->internalRep.listValue.ele = NULL; objPtr->internalRep.listValue.len = 0; objPtr->internalRep.listValue.maxLen = 0; for (i = 0; i < len; i++) { ListAppendElement(objPtr, elements[i]); } return objPtr; } /* Return a vector of Jim_Obj with the elements of a Jim list, and the * length of the vector. Note that the user of this function should make * sure that the list object can't shimmer while the vector returned * is in use, this vector is the one stored inside the internal representation * of the list object. This function is not exported, extensions should * always access to the List object elements using Jim_ListIndex(). */ static void JimListGetElements(Jim_Interp *interp, Jim_Obj *listObj, int *listLen, Jim_Obj ***listVec) { *listLen = Jim_ListLength(interp, listObj); *listVec = listObj->internalRep.listValue.ele; } /* Sorting uses ints, but commands may return wide */ static int JimSign(jim_wide w) { if (w == 0) { return 0; } else if (w < 0) { return -1; } return 1; } /* ListSortElements type values */ struct lsort_info { jmp_buf jmpbuf; Jim_Obj *command; Jim_Interp *interp; enum { JIM_LSORT_ASCII, JIM_LSORT_NOCASE, JIM_LSORT_INTEGER, JIM_LSORT_COMMAND } type; int order; int index; int indexed; int (*subfn)(Jim_Obj **, Jim_Obj **); }; static struct lsort_info *sort_info; static int ListSortIndexHelper(Jim_Obj **lhsObj, Jim_Obj **rhsObj) { Jim_Obj *lObj, *rObj; if (Jim_ListIndex(sort_info->interp, *lhsObj, sort_info->index, &lObj, JIM_ERRMSG) != JIM_OK || Jim_ListIndex(sort_info->interp, *rhsObj, sort_info->index, &rObj, JIM_ERRMSG) != JIM_OK) { longjmp(sort_info->jmpbuf, JIM_ERR); } return sort_info->subfn(&lObj, &rObj); } /* Sort the internal rep of a list. */ static int ListSortString(Jim_Obj **lhsObj, Jim_Obj **rhsObj) { return Jim_StringCompareObj(sort_info->interp, *lhsObj, *rhsObj, 0) * sort_info->order; } static int ListSortStringNoCase(Jim_Obj **lhsObj, Jim_Obj **rhsObj) { return Jim_StringCompareObj(sort_info->interp, *lhsObj, *rhsObj, 1) * sort_info->order; } static int ListSortInteger(Jim_Obj **lhsObj, Jim_Obj **rhsObj) { jim_wide lhs = 0, rhs = 0; if (Jim_GetWide(sort_info->interp, *lhsObj, &lhs) != JIM_OK || Jim_GetWide(sort_info->interp, *rhsObj, &rhs) != JIM_OK) { longjmp(sort_info->jmpbuf, JIM_ERR); } return JimSign(lhs - rhs) * sort_info->order; } static int ListSortCommand(Jim_Obj **lhsObj, Jim_Obj **rhsObj) { Jim_Obj *compare_script; int rc; jim_wide ret = 0; /* This must be a valid list */ compare_script = Jim_DuplicateObj(sort_info->interp, sort_info->command); Jim_ListAppendElement(sort_info->interp, compare_script, *lhsObj); Jim_ListAppendElement(sort_info->interp, compare_script, *rhsObj); rc = Jim_EvalObj(sort_info->interp, compare_script); if (rc != JIM_OK || Jim_GetWide(sort_info->interp, Jim_GetResult(sort_info->interp), &ret) != JIM_OK) { longjmp(sort_info->jmpbuf, rc); } return JimSign(ret) * sort_info->order; } /* Sort a list *in place*. MUST be called with non-shared objects. */ static int ListSortElements(Jim_Interp *interp, Jim_Obj *listObjPtr, struct lsort_info *info) { struct lsort_info *prev_info; typedef int (qsort_comparator) (const void *, const void *); int (*fn) (Jim_Obj **, Jim_Obj **); Jim_Obj **vector; int len; int rc; if (Jim_IsShared(listObjPtr)) Jim_Panic(interp, "Jim_ListSortElements called with shared object"); if (!Jim_IsList(listObjPtr)) SetListFromAny(interp, listObjPtr); /* Allow lsort to be called reentrantly */ prev_info = sort_info; sort_info = info; vector = listObjPtr->internalRep.listValue.ele; len = listObjPtr->internalRep.listValue.len; switch (info->type) { case JIM_LSORT_ASCII: fn = ListSortString; break; case JIM_LSORT_NOCASE: fn = ListSortStringNoCase; break; case JIM_LSORT_INTEGER: fn = ListSortInteger; break; case JIM_LSORT_COMMAND: fn = ListSortCommand; break; default: fn = NULL; /* avoid warning */ Jim_Panic(interp, "ListSort called with invalid sort type"); } if (info->indexed) { /* Need to interpose a "list index" function */ info->subfn = fn; fn = ListSortIndexHelper; } if ((rc = setjmp(info->jmpbuf)) == 0) { qsort(vector, len, sizeof(Jim_Obj *), (qsort_comparator *) fn); } Jim_InvalidateStringRep(listObjPtr); sort_info = prev_info; return rc; } /* This is the low-level function to append an element to a list. * The higher-level Jim_ListAppendElement() performs shared object * check and invalidate the string repr. This version is used * in the internals of the List Object and is not exported. * * NOTE: this function can be called only against objects * with internal type of List. */ void ListAppendElement(Jim_Obj *listPtr, Jim_Obj *objPtr) { int requiredLen = listPtr->internalRep.listValue.len + 1; if (requiredLen > listPtr->internalRep.listValue.maxLen) { int maxLen = requiredLen * 2; listPtr->internalRep.listValue.ele = Jim_Realloc(listPtr->internalRep.listValue.ele, sizeof(Jim_Obj *) * maxLen); listPtr->internalRep.listValue.maxLen = maxLen; } listPtr->internalRep.listValue.ele[listPtr->internalRep.listValue.len] = objPtr; listPtr->internalRep.listValue.len++; Jim_IncrRefCount(objPtr); } /* This is the low-level function to insert elements into a list. * The higher-level Jim_ListInsertElements() performs shared object * check and invalidate the string repr. This version is used * in the internals of the List Object and is not exported. * * NOTE: this function can be called only against objects * with internal type of List. */ static void ListInsertElements(Jim_Obj *listPtr, int idx, int elemc, Jim_Obj *const *elemVec) { int currentLen = listPtr->internalRep.listValue.len; int requiredLen = currentLen + elemc; int i; Jim_Obj **point; if (requiredLen > listPtr->internalRep.listValue.maxLen) { int maxLen = requiredLen * 2; listPtr->internalRep.listValue.ele = Jim_Realloc(listPtr->internalRep.listValue.ele, sizeof(Jim_Obj *) * maxLen); listPtr->internalRep.listValue.maxLen = maxLen; } point = listPtr->internalRep.listValue.ele + idx; memmove(point + elemc, point, (currentLen - idx) * sizeof(Jim_Obj *)); for (i = 0; i < elemc; ++i) { point[i] = elemVec[i]; Jim_IncrRefCount(point[i]); } listPtr->internalRep.listValue.len += elemc; } /* Appends every element of appendListPtr into listPtr. * Both have to be of the list type. */ static void ListAppendList(Jim_Obj *listPtr, Jim_Obj *appendListPtr) { int i, oldLen = listPtr->internalRep.listValue.len; int appendLen = appendListPtr->internalRep.listValue.len; int requiredLen = oldLen + appendLen; if (requiredLen > listPtr->internalRep.listValue.maxLen) { int maxLen = requiredLen * 2; listPtr->internalRep.listValue.ele = Jim_Realloc(listPtr->internalRep.listValue.ele, sizeof(Jim_Obj *) * maxLen); listPtr->internalRep.listValue.maxLen = maxLen; } for (i = 0; i < appendLen; i++) { Jim_Obj *objPtr = appendListPtr->internalRep.listValue.ele[i]; listPtr->internalRep.listValue.ele[oldLen + i] = objPtr; Jim_IncrRefCount(objPtr); } listPtr->internalRep.listValue.len += appendLen; } void Jim_ListAppendElement(Jim_Interp *interp, Jim_Obj *listPtr, Jim_Obj *objPtr) { if (Jim_IsShared(listPtr)) Jim_Panic(interp, "Jim_ListAppendElement called with shared object"); if (!Jim_IsList(listPtr)) SetListFromAny(interp, listPtr); Jim_InvalidateStringRep(listPtr); ListAppendElement(listPtr, objPtr); } void Jim_ListAppendList(Jim_Interp *interp, Jim_Obj *listPtr, Jim_Obj *appendListPtr) { if (Jim_IsShared(listPtr)) Jim_Panic(interp, "Jim_ListAppendList called with shared object"); if (!Jim_IsList(listPtr)) SetListFromAny(interp, listPtr); Jim_InvalidateStringRep(listPtr); ListAppendList(listPtr, appendListPtr); } int Jim_ListLength(Jim_Interp *interp, Jim_Obj *objPtr) { if (!Jim_IsList(objPtr)) SetListFromAny(interp, objPtr); return objPtr->internalRep.listValue.len; } void Jim_ListInsertElements(Jim_Interp *interp, Jim_Obj *listPtr, int idx, int objc, Jim_Obj *const *objVec) { if (Jim_IsShared(listPtr)) Jim_Panic(interp, "Jim_ListInsertElement called with shared object"); if (!Jim_IsList(listPtr)) SetListFromAny(interp, listPtr); if (idx >= 0 && idx > listPtr->internalRep.listValue.len) idx = listPtr->internalRep.listValue.len; else if (idx < 0) idx = 0; Jim_InvalidateStringRep(listPtr); ListInsertElements(listPtr, idx, objc, objVec); } int Jim_ListIndex(Jim_Interp *interp, Jim_Obj *listPtr, int idx, Jim_Obj **objPtrPtr, int flags) { if (!Jim_IsList(listPtr)) SetListFromAny(interp, listPtr); if ((idx >= 0 && idx >= listPtr->internalRep.listValue.len) || (idx < 0 && (-idx - 1) >= listPtr->internalRep.listValue.len)) { if (flags & JIM_ERRMSG) { Jim_SetResultString(interp, "list index out of range", -1); } *objPtrPtr = NULL; return JIM_ERR; } if (idx < 0) idx = listPtr->internalRep.listValue.len + idx; *objPtrPtr = listPtr->internalRep.listValue.ele[idx]; return JIM_OK; } static int ListSetIndex(Jim_Interp *interp, Jim_Obj *listPtr, int idx, Jim_Obj *newObjPtr, int flags) { if (!Jim_IsList(listPtr)) SetListFromAny(interp, listPtr); if ((idx >= 0 && idx >= listPtr->internalRep.listValue.len) || (idx < 0 && (-idx - 1) >= listPtr->internalRep.listValue.len)) { if (flags & JIM_ERRMSG) { Jim_SetResultString(interp, "list index out of range", -1); } return JIM_ERR; } if (idx < 0) idx = listPtr->internalRep.listValue.len + idx; Jim_DecrRefCount(interp, listPtr->internalRep.listValue.ele[idx]); listPtr->internalRep.listValue.ele[idx] = newObjPtr; Jim_IncrRefCount(newObjPtr); return JIM_OK; } /* Modify the list stored into the variable named 'varNamePtr' * setting the element specified by the 'indexc' indexes objects in 'indexv', * with the new element 'newObjptr'. */ int Jim_SetListIndex(Jim_Interp *interp, Jim_Obj *varNamePtr, Jim_Obj *const *indexv, int indexc, Jim_Obj *newObjPtr) { Jim_Obj *varObjPtr, *objPtr, *listObjPtr; int shared, i, idx; varObjPtr = objPtr = Jim_GetVariable(interp, varNamePtr, JIM_ERRMSG | JIM_UNSHARED); if (objPtr == NULL) return JIM_ERR; if ((shared = Jim_IsShared(objPtr))) varObjPtr = objPtr = Jim_DuplicateObj(interp, objPtr); for (i = 0; i < indexc - 1; i++) { listObjPtr = objPtr; if (Jim_GetIndex(interp, indexv[i], &idx) != JIM_OK) goto err; if (Jim_ListIndex(interp, listObjPtr, idx, &objPtr, JIM_ERRMSG) != JIM_OK) { goto err; } if (Jim_IsShared(objPtr)) { objPtr = Jim_DuplicateObj(interp, objPtr); ListSetIndex(interp, listObjPtr, idx, objPtr, JIM_NONE); } Jim_InvalidateStringRep(listObjPtr); } if (Jim_GetIndex(interp, indexv[indexc - 1], &idx) != JIM_OK) goto err; if (ListSetIndex(interp, objPtr, idx, newObjPtr, JIM_ERRMSG) == JIM_ERR) goto err; Jim_InvalidateStringRep(objPtr); Jim_InvalidateStringRep(varObjPtr); if (Jim_SetVariable(interp, varNamePtr, varObjPtr) != JIM_OK) goto err; Jim_SetResult(interp, varObjPtr); return JIM_OK; err: if (shared) { Jim_FreeNewObj(interp, varObjPtr); } return JIM_ERR; } Jim_Obj *Jim_ConcatObj(Jim_Interp *interp, int objc, Jim_Obj *const *objv) { int i; /* If all the objects in objv are lists, * it's possible to return a list as result, that's the * concatenation of all the lists. */ for (i = 0; i < objc; i++) { if (!Jim_IsList(objv[i])) break; } if (i == objc) { Jim_Obj *objPtr = Jim_NewListObj(interp, NULL, 0); for (i = 0; i < objc; i++) Jim_ListAppendList(interp, objPtr, objv[i]); return objPtr; } else { /* Else... we have to glue strings together */ int len = 0, objLen; char *bytes, *p; /* Compute the length */ for (i = 0; i < objc; i++) { Jim_GetString(objv[i], &objLen); len += objLen; } if (objc) len += objc - 1; /* Create the string rep, and a string object holding it. */ p = bytes = Jim_Alloc(len + 1); for (i = 0; i < objc; i++) { const char *s = Jim_GetString(objv[i], &objLen); /* Remove leading space */ while (objLen && (*s == ' ' || *s == '\t' || *s == '\n')) { s++; objLen--; len--; } /* And trailing space */ while (objLen && (s[objLen - 1] == ' ' || s[objLen - 1] == '\n' || s[objLen - 1] == '\t')) { /* Handle trailing backslash-space case */ if (objLen > 1 && s[objLen - 2] == '\\') { break; } objLen--; len--; } memcpy(p, s, objLen); p += objLen; if (objLen && i + 1 != objc) { *p++ = ' '; } else if (i + 1 != objc) { /* Drop the space calcuated for this * element that is instead null. */ len--; } } *p = '\0'; return Jim_NewStringObjNoAlloc(interp, bytes, len); } } /* Returns a list composed of the elements in the specified range. * first and start are directly accepted as Jim_Objects and * processed for the end?-index? case. */ Jim_Obj *Jim_ListRange(Jim_Interp *interp, Jim_Obj *listObjPtr, Jim_Obj *firstObjPtr, Jim_Obj *lastObjPtr) { int first, last; int len, rangeLen; if (Jim_GetIndex(interp, firstObjPtr, &first) != JIM_OK || Jim_GetIndex(interp, lastObjPtr, &last) != JIM_OK) return NULL; len = Jim_ListLength(interp, listObjPtr); /* will convert into list */ first = JimRelToAbsIndex(len, first); last = JimRelToAbsIndex(len, last); JimRelToAbsRange(len, first, last, &first, &last, &rangeLen); return Jim_NewListObj(interp, listObjPtr->internalRep.listValue.ele + first, rangeLen); } /* ----------------------------------------------------------------------------- * Dict object * ---------------------------------------------------------------------------*/ static void FreeDictInternalRep(Jim_Interp *interp, Jim_Obj *objPtr); static void DupDictInternalRep(Jim_Interp *interp, Jim_Obj *srcPtr, Jim_Obj *dupPtr); static void UpdateStringOfDict(struct Jim_Obj *objPtr); static int SetDictFromAny(Jim_Interp *interp, struct Jim_Obj *objPtr); /* Dict HashTable Type. * * Keys and Values are Jim objects. */ static unsigned int JimObjectHTHashFunction(const void *key) { const char *str; Jim_Obj *objPtr = (Jim_Obj *)key; int len, h; str = Jim_GetString(objPtr, &len); h = Jim_GenHashFunction((unsigned char *)str, len); return h; } static int JimObjectHTKeyCompare(void *privdata, const void *key1, const void *key2) { JIM_NOTUSED(privdata); return Jim_StringEqObj((Jim_Obj *)key1, (Jim_Obj *)key2); } static void JimObjectHTKeyValDestructor(void *interp, void *val) { Jim_Obj *objPtr = val; Jim_DecrRefCount(interp, objPtr); } static const Jim_HashTableType JimDictHashTableType = { JimObjectHTHashFunction, /* hash function */ NULL, /* key dup */ NULL, /* val dup */ JimObjectHTKeyCompare, /* key compare */ (void (*)(void *, const void *)) /* ATTENTION: const cast */ JimObjectHTKeyValDestructor, /* key destructor */ JimObjectHTKeyValDestructor /* val destructor */ }; /* Note that while the elements of the dict may contain references, * the list object itself can't. This basically means that the * dict object string representation as a whole can't contain references * that are not presents in the single elements. */ static const Jim_ObjType dictObjType = { "dict", FreeDictInternalRep, DupDictInternalRep, UpdateStringOfDict, JIM_TYPE_NONE, }; void FreeDictInternalRep(Jim_Interp *interp, Jim_Obj *objPtr) { JIM_NOTUSED(interp); Jim_FreeHashTable(objPtr->internalRep.ptr); Jim_Free(objPtr->internalRep.ptr); } void DupDictInternalRep(Jim_Interp *interp, Jim_Obj *srcPtr, Jim_Obj *dupPtr) { Jim_HashTable *ht, *dupHt; Jim_HashTableIterator *htiter; Jim_HashEntry *he; /* Create a new hash table */ ht = srcPtr->internalRep.ptr; dupHt = Jim_Alloc(sizeof(*dupHt)); Jim_InitHashTable(dupHt, &JimDictHashTableType, interp); if (ht->size != 0) Jim_ExpandHashTable(dupHt, ht->size); /* Copy every element from the source to the dup hash table */ htiter = Jim_GetHashTableIterator(ht); while ((he = Jim_NextHashEntry(htiter)) != NULL) { const Jim_Obj *keyObjPtr = he->key; Jim_Obj *valObjPtr = he->val; Jim_IncrRefCount((Jim_Obj *)keyObjPtr); /* ATTENTION: const cast */ Jim_IncrRefCount(valObjPtr); Jim_AddHashEntry(dupHt, keyObjPtr, valObjPtr); } Jim_FreeHashTableIterator(htiter); dupPtr->internalRep.ptr = dupHt; dupPtr->typePtr = &dictObjType; } void UpdateStringOfDict(struct Jim_Obj *objPtr) { int i, bufLen, realLength; const char *strRep; char *p; int *quotingType, objc; Jim_HashTable *ht; Jim_HashTableIterator *htiter; Jim_HashEntry *he; Jim_Obj **objv; /* Trun the hash table into a flat vector of Jim_Objects. */ ht = objPtr->internalRep.ptr; objc = ht->used * 2; objv = Jim_Alloc(objc * sizeof(Jim_Obj *)); htiter = Jim_GetHashTableIterator(ht); i = 0; while ((he = Jim_NextHashEntry(htiter)) != NULL) { objv[i++] = (Jim_Obj *)he->key; /* ATTENTION: const cast */ objv[i++] = he->val; } Jim_FreeHashTableIterator(htiter); /* (Over) Estimate the space needed. */ quotingType = Jim_Alloc(sizeof(int) * objc); bufLen = 0; for (i = 0; i < objc; i++) { int len; strRep = Jim_GetString(objv[i], &len); quotingType[i] = ListElementQuotingType(strRep, len); switch (quotingType[i]) { case JIM_ELESTR_SIMPLE: bufLen += len; break; case JIM_ELESTR_BRACE: bufLen += len + 2; break; case JIM_ELESTR_QUOTE: bufLen += len * 2; break; } bufLen++; /* elements separator. */ } bufLen++; /* Generate the string rep. */ p = objPtr->bytes = Jim_Alloc(bufLen + 1); realLength = 0; for (i = 0; i < objc; i++) { int len, qlen; char *q; strRep = Jim_GetString(objv[i], &len); switch (quotingType[i]) { case JIM_ELESTR_SIMPLE: memcpy(p, strRep, len); p += len; realLength += len; break; case JIM_ELESTR_BRACE: *p++ = '{'; memcpy(p, strRep, len); p += len; *p++ = '}'; realLength += len + 2; break; case JIM_ELESTR_QUOTE: q = BackslashQuoteString(strRep, len, &qlen); memcpy(p, q, qlen); Jim_Free(q); p += qlen; realLength += qlen; break; } /* Add a separating space */ if (i + 1 != objc) { *p++ = ' '; realLength++; } } *p = '\0'; /* nul term. */ objPtr->length = realLength; Jim_Free(quotingType); Jim_Free(objv); } static int SetDictFromAny(Jim_Interp *interp, struct Jim_Obj *objPtr) { int listlen; /* Get the string representation. Do this first so we don't * change order in case of fast conversion to dict. */ Jim_GetString(objPtr, NULL); /* For simplicity, convert a non-list object to a list and then to a dict */ listlen = Jim_ListLength(interp, objPtr); if (listlen % 2) { Jim_SetResultString(interp, "invalid dictionary value: must be a list with an even number of elements", -1); return JIM_ERR; } else { /* Now it is easy to convert to a dict from a list, and it can't fail */ Jim_HashTable *ht; int i; ht = Jim_Alloc(sizeof(*ht)); Jim_InitHashTable(ht, &JimDictHashTableType, interp); for (i = 0; i < listlen; i += 2) { Jim_Obj *keyObjPtr; Jim_Obj *valObjPtr; Jim_ListIndex(interp, objPtr, i, &keyObjPtr, JIM_NONE); Jim_ListIndex(interp, objPtr, i + 1, &valObjPtr, JIM_NONE); Jim_IncrRefCount(keyObjPtr); Jim_IncrRefCount(valObjPtr); if (Jim_AddHashEntry(ht, keyObjPtr, valObjPtr) != JIM_OK) { Jim_HashEntry *he; he = Jim_FindHashEntry(ht, keyObjPtr); Jim_DecrRefCount(interp, keyObjPtr); /* ATTENTION: const cast */ Jim_DecrRefCount(interp, (Jim_Obj *)he->val); he->val = valObjPtr; } } Jim_FreeIntRep(interp, objPtr); objPtr->typePtr = &dictObjType; objPtr->internalRep.ptr = ht; return JIM_OK; } } /* Dict object API */ /* Add an element to a dict. objPtr must be of the "dict" type. * The higer-level exported function is Jim_DictAddElement(). * If an element with the specified key already exists, the value * associated is replaced with the new one. * * if valueObjPtr == NULL, the key is instead removed if it exists. */ static int DictAddElement(Jim_Interp *interp, Jim_Obj *objPtr, Jim_Obj *keyObjPtr, Jim_Obj *valueObjPtr) { Jim_HashTable *ht = objPtr->internalRep.ptr; if (valueObjPtr == NULL) { /* unset */ return Jim_DeleteHashEntry(ht, keyObjPtr); } Jim_IncrRefCount(keyObjPtr); Jim_IncrRefCount(valueObjPtr); if (Jim_AddHashEntry(ht, keyObjPtr, valueObjPtr) != JIM_OK) { Jim_HashEntry *he = Jim_FindHashEntry(ht, keyObjPtr); Jim_DecrRefCount(interp, keyObjPtr); /* ATTENTION: const cast */ Jim_DecrRefCount(interp, (Jim_Obj *)he->val); he->val = valueObjPtr; } return JIM_OK; } /* Add an element, higher-level interface for DictAddElement(). * If valueObjPtr == NULL, the key is removed if it exists. */ int Jim_DictAddElement(Jim_Interp *interp, Jim_Obj *objPtr, Jim_Obj *keyObjPtr, Jim_Obj *valueObjPtr) { int retcode; if (Jim_IsShared(objPtr)) Jim_Panic(interp, "Jim_DictAddElement called with shared object"); if (objPtr->typePtr != &dictObjType) { if (SetDictFromAny(interp, objPtr) != JIM_OK) return JIM_ERR; } retcode = DictAddElement(interp, objPtr, keyObjPtr, valueObjPtr); Jim_InvalidateStringRep(objPtr); return retcode; } Jim_Obj *Jim_NewDictObj(Jim_Interp *interp, Jim_Obj *const *elements, int len) { Jim_Obj *objPtr; int i; if (len % 2) Jim_Panic(interp, "Jim_NewDictObj() 'len' argument must be even"); objPtr = Jim_NewObj(interp); objPtr->typePtr = &dictObjType; objPtr->bytes = NULL; objPtr->internalRep.ptr = Jim_Alloc(sizeof(Jim_HashTable)); Jim_InitHashTable(objPtr->internalRep.ptr, &JimDictHashTableType, interp); for (i = 0; i < len; i += 2) DictAddElement(interp, objPtr, elements[i], elements[i + 1]); return objPtr; } /* Return the value associated to the specified dict key * Note: Returns JIM_OK if OK, JIM_ERR if entry not found or -1 if can't create dict value */ int Jim_DictKey(Jim_Interp *interp, Jim_Obj *dictPtr, Jim_Obj *keyPtr, Jim_Obj **objPtrPtr, int flags) { Jim_HashEntry *he; Jim_HashTable *ht; if (dictPtr->typePtr != &dictObjType) { if (SetDictFromAny(interp, dictPtr) != JIM_OK) return -1; } ht = dictPtr->internalRep.ptr; if ((he = Jim_FindHashEntry(ht, keyPtr)) == NULL) { if (flags & JIM_ERRMSG) { Jim_SetResultFormatted(interp, "key \"%#s\" not found in dictionary", keyPtr); } return JIM_ERR; } *objPtrPtr = he->val; return JIM_OK; } /* Return an allocated array of key/value pairs for the dictionary. Stores the length in *len */ int Jim_DictPairs(Jim_Interp *interp, Jim_Obj *dictPtr, Jim_Obj ***objPtrPtr, int *len) { Jim_HashTable *ht; Jim_HashTableIterator *htiter; Jim_HashEntry *he; Jim_Obj **objv; int i; if (dictPtr->typePtr != &dictObjType) { if (SetDictFromAny(interp, dictPtr) != JIM_OK) return JIM_ERR; } ht = dictPtr->internalRep.ptr; /* Turn the hash table into a flat vector of Jim_Objects. */ objv = Jim_Alloc((ht->used * 2) * sizeof(Jim_Obj *)); htiter = Jim_GetHashTableIterator(ht); i = 0; while ((he = Jim_NextHashEntry(htiter)) != NULL) { objv[i++] = (Jim_Obj *)he->key; /* ATTENTION: const cast */ objv[i++] = he->val; } *len = i; Jim_FreeHashTableIterator(htiter); *objPtrPtr = objv; return JIM_OK; } /* Return the value associated to the specified dict keys */ int Jim_DictKeysVector(Jim_Interp *interp, Jim_Obj *dictPtr, Jim_Obj *const *keyv, int keyc, Jim_Obj **objPtrPtr, int flags) { int i; if (keyc == 0) { *objPtrPtr = dictPtr; return JIM_OK; } for (i = 0; i < keyc; i++) { Jim_Obj *objPtr; if (Jim_DictKey(interp, dictPtr, keyv[i], &objPtr, flags) != JIM_OK) return JIM_ERR; dictPtr = objPtr; } *objPtrPtr = dictPtr; return JIM_OK; } /* Modify the dict stored into the variable named 'varNamePtr' * setting the element specified by the 'keyc' keys objects in 'keyv', * with the new value of the element 'newObjPtr'. * * If newObjPtr == NULL the operation is to remove the given key * from the dictionary. */ int Jim_SetDictKeysVector(Jim_Interp *interp, Jim_Obj *varNamePtr, Jim_Obj *const *keyv, int keyc, Jim_Obj *newObjPtr) { Jim_Obj *varObjPtr, *objPtr, *dictObjPtr; int shared, i; varObjPtr = objPtr = Jim_GetVariable(interp, varNamePtr, newObjPtr == NULL ? JIM_ERRMSG : JIM_NONE); if (objPtr == NULL) { if (newObjPtr == NULL) /* Cannot remove a key from non existing var */ return JIM_ERR; varObjPtr = objPtr = Jim_NewDictObj(interp, NULL, 0); if (Jim_SetVariable(interp, varNamePtr, objPtr) != JIM_OK) { Jim_FreeNewObj(interp, varObjPtr); return JIM_ERR; } } if ((shared = Jim_IsShared(objPtr))) varObjPtr = objPtr = Jim_DuplicateObj(interp, objPtr); for (i = 0; i < keyc - 1; i++) { dictObjPtr = objPtr; /* Check if it's a valid dictionary */ if (dictObjPtr->typePtr != &dictObjType) { if (SetDictFromAny(interp, dictObjPtr) != JIM_OK) goto err; } /* Check if the given key exists. */ Jim_InvalidateStringRep(dictObjPtr); if (Jim_DictKey(interp, dictObjPtr, keyv[i], &objPtr, newObjPtr ? JIM_NONE : JIM_ERRMSG) == JIM_OK) { /* This key exists at the current level. * Make sure it's not shared!. */ if (Jim_IsShared(objPtr)) { objPtr = Jim_DuplicateObj(interp, objPtr); DictAddElement(interp, dictObjPtr, keyv[i], objPtr); } } else { /* Key not found. If it's an [unset] operation * this is an error. Only the last key may not * exist. */ if (newObjPtr == NULL) goto err; /* Otherwise set an empty dictionary * as key's value. */ objPtr = Jim_NewDictObj(interp, NULL, 0); DictAddElement(interp, dictObjPtr, keyv[i], objPtr); } } if (Jim_DictAddElement(interp, objPtr, keyv[keyc - 1], newObjPtr) != JIM_OK) { goto err; } Jim_InvalidateStringRep(objPtr); Jim_InvalidateStringRep(varObjPtr); if (Jim_SetVariable(interp, varNamePtr, varObjPtr) != JIM_OK) goto err; Jim_SetResult(interp, varObjPtr); return JIM_OK; err: if (shared) { Jim_FreeNewObj(interp, varObjPtr); } return JIM_ERR; } /* ----------------------------------------------------------------------------- * Index object * ---------------------------------------------------------------------------*/ static void UpdateStringOfIndex(struct Jim_Obj *objPtr); static int SetIndexFromAny(Jim_Interp *interp, struct Jim_Obj *objPtr); static const Jim_ObjType indexObjType = { "index", NULL, NULL, UpdateStringOfIndex, JIM_TYPE_NONE, }; void UpdateStringOfIndex(struct Jim_Obj *objPtr) { int len; char buf[JIM_INTEGER_SPACE + 1]; if (objPtr->internalRep.indexValue >= 0) len = sprintf(buf, "%d", objPtr->internalRep.indexValue); else if (objPtr->internalRep.indexValue == -1) len = sprintf(buf, "end"); else { len = sprintf(buf, "end%d", objPtr->internalRep.indexValue + 1); } objPtr->bytes = Jim_Alloc(len + 1); memcpy(objPtr->bytes, buf, len + 1); objPtr->length = len; } int SetIndexFromAny(Jim_Interp *interp, Jim_Obj *objPtr) { int idx, end = 0; const char *str; char *endptr; /* Get the string representation */ str = Jim_GetString(objPtr, NULL); /* Try to convert into an index */ if (strncmp(str, "end", 3) == 0) { end = 1; str += 3; idx = 0; } else { idx = strtol(str, &endptr, 10); if (endptr == str) { goto badindex; } str = endptr; } /* Now str may include or + or - */ if (*str == '+' || *str == '-') { int sign = (*str == '+' ? 1 : -1); idx += sign * strtol(++str, &endptr, 10); if (str == endptr || *endptr) { goto badindex; } str = endptr; } /* The only thing left should be spaces */ while (isspace(UCHAR(*str))) { str++; } if (*str) { goto badindex; } if (end) { if (idx > 0) { idx = INT_MAX; } else { /* end-1 is repesented as -2 */ idx--; } } else if (idx < 0) { idx = -INT_MAX; } /* Free the old internal repr and set the new one. */ Jim_FreeIntRep(interp, objPtr); objPtr->typePtr = &indexObjType; objPtr->internalRep.indexValue = idx; return JIM_OK; badindex: Jim_SetResultFormatted(interp, "bad index \"%#s\": must be integer?[+-]integer? or end?[+-]integer?", objPtr); return JIM_ERR; } int Jim_GetIndex(Jim_Interp *interp, Jim_Obj *objPtr, int *indexPtr) { /* Avoid shimmering if the object is an integer. */ if (objPtr->typePtr == &intObjType) { jim_wide val = JimWideValue(objPtr); if (!(val < LONG_MIN) && !(val > LONG_MAX)) { *indexPtr = (val < 0) ? -INT_MAX : (long)val;; return JIM_OK; } } if (objPtr->typePtr != &indexObjType && SetIndexFromAny(interp, objPtr) == JIM_ERR) return JIM_ERR; *indexPtr = objPtr->internalRep.indexValue; return JIM_OK; } /* ----------------------------------------------------------------------------- * Return Code Object. * ---------------------------------------------------------------------------*/ /* NOTE: These must be kept in the same order as JIM_OK, JIM_ERR, ... */ static const char * const jimReturnCodes[] = { [JIM_OK] = "ok", [JIM_ERR] = "error", [JIM_RETURN] = "return", [JIM_BREAK] = "break", [JIM_CONTINUE] = "continue", [JIM_SIGNAL] = "signal", [JIM_EXIT] = "exit", [JIM_EVAL] = "eval", NULL }; #define jimReturnCodesSize (sizeof(jimReturnCodes)/sizeof(*jimReturnCodes)) static int SetReturnCodeFromAny(Jim_Interp *interp, Jim_Obj *objPtr); static const Jim_ObjType returnCodeObjType = { "return-code", NULL, NULL, NULL, JIM_TYPE_NONE, }; /* Converts a (standard) return code to a string. Returns "?" for * non-standard return codes. */ const char *Jim_ReturnCode(int code) { if (code < 0 || code >= (int)jimReturnCodesSize) { return "?"; } else { return jimReturnCodes[code]; } } int SetReturnCodeFromAny(Jim_Interp *interp, Jim_Obj *objPtr) { int returnCode; jim_wide wideValue; /* Try to convert into an integer */ if (JimGetWideNoErr(interp, objPtr, &wideValue) != JIM_ERR) returnCode = (int)wideValue; else if (Jim_GetEnum(interp, objPtr, jimReturnCodes, &returnCode, NULL, JIM_NONE) != JIM_OK) { Jim_SetResultFormatted(interp, "expected return code but got \"%#s\"", objPtr); return JIM_ERR; } /* Free the old internal repr and set the new one. */ Jim_FreeIntRep(interp, objPtr); objPtr->typePtr = &returnCodeObjType; objPtr->internalRep.returnCode = returnCode; return JIM_OK; } int Jim_GetReturnCode(Jim_Interp *interp, Jim_Obj *objPtr, int *intPtr) { if (objPtr->typePtr != &returnCodeObjType && SetReturnCodeFromAny(interp, objPtr) == JIM_ERR) return JIM_ERR; *intPtr = objPtr->internalRep.returnCode; return JIM_OK; } /* ----------------------------------------------------------------------------- * Expression Parsing * ---------------------------------------------------------------------------*/ static int JimParseExprOperator(struct JimParserCtx *pc); static int JimParseExprNumber(struct JimParserCtx *pc); static int JimParseExprIrrational(struct JimParserCtx *pc); /* Exrp's Stack machine operators opcodes. */ /* Binary operators (numbers) */ enum { /* Continues on from the JIM_TT_ space */ /* Operations */ JIM_EXPROP_MUL = JIM_TT_EXPR_OP, /* 15 */ JIM_EXPROP_DIV, JIM_EXPROP_MOD, JIM_EXPROP_SUB, JIM_EXPROP_ADD, JIM_EXPROP_LSHIFT, JIM_EXPROP_RSHIFT, JIM_EXPROP_ROTL, JIM_EXPROP_ROTR, JIM_EXPROP_LT, JIM_EXPROP_GT, JIM_EXPROP_LTE, JIM_EXPROP_GTE, JIM_EXPROP_NUMEQ, JIM_EXPROP_NUMNE, JIM_EXPROP_BITAND, /* 30 */ JIM_EXPROP_BITXOR, JIM_EXPROP_BITOR, /* Note must keep these together */ JIM_EXPROP_LOGICAND, /* 33 */ JIM_EXPROP_LOGICAND_LEFT, JIM_EXPROP_LOGICAND_RIGHT, /* and these */ JIM_EXPROP_LOGICOR, /* 36 */ JIM_EXPROP_LOGICOR_LEFT, JIM_EXPROP_LOGICOR_RIGHT, /* and these */ /* Ternary operators */ JIM_EXPROP_TERNARY, /* 39 */ JIM_EXPROP_TERNARY_LEFT, JIM_EXPROP_TERNARY_RIGHT, /* and these */ JIM_EXPROP_COLON, /* 42 */ JIM_EXPROP_COLON_LEFT, JIM_EXPROP_COLON_RIGHT, JIM_EXPROP_POW, /* 45 */ /* Binary operators (strings) */ JIM_EXPROP_STREQ, JIM_EXPROP_STRNE, JIM_EXPROP_STRIN, JIM_EXPROP_STRNI, /* Unary operators (numbers) */ JIM_EXPROP_NOT, JIM_EXPROP_BITNOT, JIM_EXPROP_UNARYMINUS, JIM_EXPROP_UNARYPLUS, /* Functions */ JIM_EXPROP_FUNC_FIRST, JIM_EXPROP_FUNC_INT = JIM_EXPROP_FUNC_FIRST, JIM_EXPROP_FUNC_ABS, JIM_EXPROP_FUNC_DOUBLE, JIM_EXPROP_FUNC_ROUND, #ifdef JIM_MATH_FUNCTIONS /* math functions from libm */ JIM_EXPROP_FUNC_SIN, JIM_EXPROP_FUNC_COS, JIM_EXPROP_FUNC_TAN, JIM_EXPROP_FUNC_ASIN, JIM_EXPROP_FUNC_ACOS, JIM_EXPROP_FUNC_ATAN, JIM_EXPROP_FUNC_SINH, JIM_EXPROP_FUNC_COSH, JIM_EXPROP_FUNC_TANH, JIM_EXPROP_FUNC_CEIL, JIM_EXPROP_FUNC_FLOOR, JIM_EXPROP_FUNC_EXP, JIM_EXPROP_FUNC_LOG, JIM_EXPROP_FUNC_LOG10, JIM_EXPROP_FUNC_SQRT, #endif }; struct JimExprState { Jim_Obj **stack; int stacklen; int opcode; int skip; }; /* Operators table */ typedef struct Jim_ExprOperator { const char *name; int precedence; int arity; int (*funcop) (Jim_Interp *interp, struct JimExprState * e); int lazy; } Jim_ExprOperator; static void ExprPush(struct JimExprState *e, Jim_Obj *obj) { Jim_IncrRefCount(obj); e->stack[e->stacklen++] = obj; } static Jim_Obj *ExprPop(struct JimExprState *e) { return e->stack[--e->stacklen]; } static int JimExprOpNumUnary(Jim_Interp *interp, struct JimExprState *e) { int intresult = 0; int rc = JIM_OK; Jim_Obj *A = ExprPop(e); double dA, dC = 0; jim_wide wA, wC = 0; if ((A->typePtr != &doubleObjType || A->bytes) && JimGetWideNoErr(interp, A, &wA) == JIM_OK) { intresult = 1; switch (e->opcode) { case JIM_EXPROP_FUNC_INT: wC = wA; break; case JIM_EXPROP_FUNC_ROUND: wC = wA; break; case JIM_EXPROP_FUNC_DOUBLE: dC = wA; intresult = 0; break; case JIM_EXPROP_FUNC_ABS: wC = wA >= 0 ? wA : -wA; break; case JIM_EXPROP_UNARYMINUS: wC = -wA; break; case JIM_EXPROP_UNARYPLUS: wC = wA; break; case JIM_EXPROP_NOT: wC = !wA; break; default: abort(); } } else if ((rc = Jim_GetDouble(interp, A, &dA)) == JIM_OK) { switch (e->opcode) { case JIM_EXPROP_FUNC_INT: wC = dA; intresult = 1; break; case JIM_EXPROP_FUNC_ROUND: wC = dA < 0 ? (dA - 0.5) : (dA + 0.5); intresult = 1; break; case JIM_EXPROP_FUNC_DOUBLE: dC = dA; break; case JIM_EXPROP_FUNC_ABS: dC = dA >= 0 ? dA : -dA; break; case JIM_EXPROP_UNARYMINUS: dC = -dA; break; case JIM_EXPROP_UNARYPLUS: dC = dA; break; case JIM_EXPROP_NOT: wC = !dA; intresult = 1; break; default: abort(); } } if (rc == JIM_OK) { if (intresult) { ExprPush(e, Jim_NewIntObj(interp, wC)); } else { ExprPush(e, Jim_NewDoubleObj(interp, dC)); } } Jim_DecrRefCount(interp, A); return rc; } static int JimExprOpIntUnary(Jim_Interp *interp, struct JimExprState *e) { Jim_Obj *A = ExprPop(e); jim_wide wA; int rc = JIM_ERR; if (Jim_GetWide(interp, A, &wA) == JIM_OK) { jim_wide wC; switch (e->opcode) { case JIM_EXPROP_BITNOT: wC = ~wA; break; default: abort(); } ExprPush(e, Jim_NewIntObj(interp, wC)); rc = JIM_OK; } Jim_DecrRefCount(interp, A); return rc; } #ifdef JIM_MATH_FUNCTIONS static int JimExprOpDoubleUnary(Jim_Interp *interp, struct JimExprState *e) { int rc; Jim_Obj *A = ExprPop(e); double dA, dC; rc = Jim_GetDouble(interp, A, &dA); if (rc == JIM_OK) { switch (e->opcode) { case JIM_EXPROP_FUNC_SIN: dC = sin(dA); break; case JIM_EXPROP_FUNC_COS: dC = cos(dA); break; case JIM_EXPROP_FUNC_TAN: dC = tan(dA); break; case JIM_EXPROP_FUNC_ASIN: dC = asin(dA); break; case JIM_EXPROP_FUNC_ACOS: dC = acos(dA); break; case JIM_EXPROP_FUNC_ATAN: dC = atan(dA); break; case JIM_EXPROP_FUNC_SINH: dC = sinh(dA); break; case JIM_EXPROP_FUNC_COSH: dC = cosh(dA); break; case JIM_EXPROP_FUNC_TANH: dC = tanh(dA); break; case JIM_EXPROP_FUNC_CEIL: dC = ceil(dA); break; case JIM_EXPROP_FUNC_FLOOR: dC = floor(dA); break; case JIM_EXPROP_FUNC_EXP: dC = exp(dA); break; case JIM_EXPROP_FUNC_LOG: dC = log(dA); break; case JIM_EXPROP_FUNC_LOG10: dC = log10(dA); break; case JIM_EXPROP_FUNC_SQRT: dC = sqrt(dA); break; default: abort(); } ExprPush(e, Jim_NewDoubleObj(interp, dC)); } Jim_DecrRefCount(interp, A); return rc; } #endif /* A binary operation on two ints */ static int JimExprOpIntBin(Jim_Interp *interp, struct JimExprState *e) { Jim_Obj *B = ExprPop(e); Jim_Obj *A = ExprPop(e); jim_wide wA, wB; int rc = JIM_ERR; if (Jim_GetWide(interp, A, &wA) == JIM_OK && Jim_GetWide(interp, B, &wB) == JIM_OK) { jim_wide wC; rc = JIM_OK; switch (e->opcode) { case JIM_EXPROP_LSHIFT: wC = wA << wB; break; case JIM_EXPROP_RSHIFT: wC = wA >> wB; break; case JIM_EXPROP_BITAND: wC = wA & wB; break; case JIM_EXPROP_BITXOR: wC = wA ^ wB; break; case JIM_EXPROP_BITOR: wC = wA | wB; break; case JIM_EXPROP_POW: wC = JimPowWide(wA, wB); break; case JIM_EXPROP_MOD: if (wB == 0) { wC = 0; Jim_SetResultString(interp, "Division by zero", -1); rc = JIM_ERR; } else { /* * From Tcl 8.x * * This code is tricky: C doesn't guarantee much * about the quotient or remainder, but Tcl does. * The remainder always has the same sign as the * divisor and a smaller absolute value. */ int negative = 0; if (wB < 0) { wB = -wB; wA = -wA; negative = 1; } wC = wA % wB; if (wC < 0) { wC += wB; } if (negative) { wC = -wC; } } break; case JIM_EXPROP_ROTL:{ /* uint32_t would be better. But not everyone has inttypes.h? */ unsigned long uA = (unsigned long)wA; const unsigned int S = sizeof(unsigned long) * 8; wC = (unsigned long)((uA << wB) | (uA >> (S - wB))); break; } case JIM_EXPROP_ROTR:{ unsigned long uA = (unsigned long)wA; const unsigned int S = sizeof(unsigned long) * 8; wC = (unsigned long)((uA >> wB) | (uA << (S - wB))); break; } default: abort(); } ExprPush(e, Jim_NewIntObj(interp, wC)); } Jim_DecrRefCount(interp, A); Jim_DecrRefCount(interp, B); return rc; } /* A binary operation on two ints or two doubles (or two strings for some ops) */ static int JimExprOpBin(Jim_Interp *interp, struct JimExprState *e) { int intresult = 0; int rc = JIM_OK; double dA, dB, dC = 0; jim_wide wA, wB, wC = 0; Jim_Obj *B = ExprPop(e); Jim_Obj *A = ExprPop(e); if ((A->typePtr != &doubleObjType || A->bytes) && (B->typePtr != &doubleObjType || B->bytes) && JimGetWideNoErr(interp, A, &wA) == JIM_OK && JimGetWideNoErr(interp, B, &wB) == JIM_OK) { /* Both are ints */ intresult = 1; switch (e->opcode) { case JIM_EXPROP_POW: wC = JimPowWide(wA, wB); break; case JIM_EXPROP_ADD: wC = wA + wB; break; case JIM_EXPROP_SUB: wC = wA - wB; break; case JIM_EXPROP_MUL: wC = wA * wB; break; case JIM_EXPROP_DIV: if (wB == 0) { Jim_SetResultString(interp, "Division by zero", -1); rc = JIM_ERR; } else { /* * From Tcl 8.x * * This code is tricky: C doesn't guarantee much * about the quotient or remainder, but Tcl does. * The remainder always has the same sign as the * divisor and a smaller absolute value. */ if (wB < 0) { wB = -wB; wA = -wA; } wC = wA / wB; if (wA % wB < 0) { wC--; } } break; case JIM_EXPROP_LT: wC = wA < wB; break; case JIM_EXPROP_GT: wC = wA > wB; break; case JIM_EXPROP_LTE: wC = wA <= wB; break; case JIM_EXPROP_GTE: wC = wA >= wB; break; case JIM_EXPROP_NUMEQ: wC = wA == wB; break; case JIM_EXPROP_NUMNE: wC = wA != wB; break; default: abort(); } } else if (Jim_GetDouble(interp, A, &dA) == JIM_OK && Jim_GetDouble(interp, B, &dB) == JIM_OK) { switch (e->opcode) { case JIM_EXPROP_POW: #ifdef JIM_MATH_FUNCTIONS dC = pow(dA, dB); #else rc = JIM_ERR; #endif break; case JIM_EXPROP_ADD: dC = dA + dB; break; case JIM_EXPROP_SUB: dC = dA - dB; break; case JIM_EXPROP_MUL: dC = dA * dB; break; case JIM_EXPROP_DIV: if (dB == 0) { #ifdef INFINITY dC = dA < 0 ? -INFINITY : INFINITY; #else dC = (dA < 0 ? -1.0 : 1.0) * strtod("Inf", NULL); #endif } else { dC = dA / dB; } break; case JIM_EXPROP_LT: wC = dA < dB; intresult = 1; break; case JIM_EXPROP_GT: wC = dA > dB; intresult = 1; break; case JIM_EXPROP_LTE: wC = dA <= dB; intresult = 1; break; case JIM_EXPROP_GTE: wC = dA >= dB; intresult = 1; break; case JIM_EXPROP_NUMEQ: wC = dA == dB; intresult = 1; break; case JIM_EXPROP_NUMNE: wC = dA != dB; intresult = 1; break; default: abort(); } } else { /* Handle the string case */ /* REVISIT: Could optimise the eq/ne case by checking lengths */ int i = Jim_StringCompareObj(interp, A, B, 0); intresult = 1; switch (e->opcode) { case JIM_EXPROP_LT: wC = i < 0; break; case JIM_EXPROP_GT: wC = i > 0; break; case JIM_EXPROP_LTE: wC = i <= 0; break; case JIM_EXPROP_GTE: wC = i >= 0; break; case JIM_EXPROP_NUMEQ: wC = i == 0; break; case JIM_EXPROP_NUMNE: wC = i != 0; break; default: rc = JIM_ERR; break; } } if (rc == JIM_OK) { if (intresult) { ExprPush(e, Jim_NewIntObj(interp, wC)); } else { ExprPush(e, Jim_NewDoubleObj(interp, dC)); } } Jim_DecrRefCount(interp, A); Jim_DecrRefCount(interp, B); return rc; } static int JimSearchList(Jim_Interp *interp, Jim_Obj *listObjPtr, Jim_Obj *valObj) { int listlen; int i; listlen = Jim_ListLength(interp, listObjPtr); for (i = 0; i < listlen; i++) { Jim_Obj *objPtr; Jim_ListIndex(interp, listObjPtr, i, &objPtr, JIM_NONE); if (Jim_StringEqObj(objPtr, valObj)) { return 1; } } return 0; } static int JimExprOpStrBin(Jim_Interp *interp, struct JimExprState *e) { Jim_Obj *B = ExprPop(e); Jim_Obj *A = ExprPop(e); jim_wide wC; switch (e->opcode) { case JIM_EXPROP_STREQ: case JIM_EXPROP_STRNE: { int Alen, Blen; const char *sA = Jim_GetString(A, &Alen); const char *sB = Jim_GetString(B, &Blen); if (e->opcode == JIM_EXPROP_STREQ) { wC = (Alen == Blen && memcmp(sA, sB, Alen) == 0); } else { wC = (Alen != Blen || memcmp(sA, sB, Alen) != 0); } break; } case JIM_EXPROP_STRIN: wC = JimSearchList(interp, B, A); break; case JIM_EXPROP_STRNI: wC = !JimSearchList(interp, B, A); break; default: abort(); } ExprPush(e, Jim_NewIntObj(interp, wC)); Jim_DecrRefCount(interp, A); Jim_DecrRefCount(interp, B); return JIM_OK; } static int ExprBool(Jim_Interp *interp, Jim_Obj *obj) { long l; double d; if (Jim_GetLong(interp, obj, &l) == JIM_OK) { return l != 0; } if (Jim_GetDouble(interp, obj, &d) == JIM_OK) { return d != 0; } return -1; } static int JimExprOpAndLeft(Jim_Interp *interp, struct JimExprState *e) { Jim_Obj *skip = ExprPop(e); Jim_Obj *A = ExprPop(e); int rc = JIM_OK; switch (ExprBool(interp, A)) { case 0: /* false, so skip RHS opcodes with a 0 result */ e->skip = JimWideValue(skip); ExprPush(e, Jim_NewIntObj(interp, 0)); break; case 1: /* true so continue */ break; case -1: /* Invalid */ rc = JIM_ERR; } Jim_DecrRefCount(interp, A); Jim_DecrRefCount(interp, skip); return rc; } static int JimExprOpOrLeft(Jim_Interp *interp, struct JimExprState *e) { Jim_Obj *skip = ExprPop(e); Jim_Obj *A = ExprPop(e); int rc = JIM_OK; switch (ExprBool(interp, A)) { case 0: /* false, so do nothing */ break; case 1: /* true so skip RHS opcodes with a 1 result */ e->skip = JimWideValue(skip); ExprPush(e, Jim_NewIntObj(interp, 1)); break; case -1: /* Invalid */ rc = JIM_ERR; break; } Jim_DecrRefCount(interp, A); Jim_DecrRefCount(interp, skip); return rc; } static int JimExprOpAndOrRight(Jim_Interp *interp, struct JimExprState *e) { Jim_Obj *A = ExprPop(e); int rc = JIM_OK; switch (ExprBool(interp, A)) { case 0: ExprPush(e, Jim_NewIntObj(interp, 0)); break; case 1: ExprPush(e, Jim_NewIntObj(interp, 1)); break; case -1: /* Invalid */ rc = JIM_ERR; break; } Jim_DecrRefCount(interp, A); return rc; } static int JimExprOpTernaryLeft(Jim_Interp *interp, struct JimExprState *e) { Jim_Obj *skip = ExprPop(e); Jim_Obj *A = ExprPop(e); int rc = JIM_OK; /* Repush A */ ExprPush(e, A); switch (ExprBool(interp, A)) { case 0: /* false, skip RHS opcodes */ e->skip = JimWideValue(skip); /* Push a dummy value */ ExprPush(e, Jim_NewIntObj(interp, 0)); break; case 1: /* true so do nothing */ break; case -1: /* Invalid */ rc = JIM_ERR; break; } Jim_DecrRefCount(interp, A); Jim_DecrRefCount(interp, skip); return rc; } static int JimExprOpColonLeft(Jim_Interp *interp, struct JimExprState *e) { Jim_Obj *skip = ExprPop(e); Jim_Obj *B = ExprPop(e); Jim_Obj *A = ExprPop(e); /* No need to check for A as non-boolean */ if (ExprBool(interp, A)) { /* true, so skip RHS opcodes */ e->skip = JimWideValue(skip); /* Repush B as the answer */ ExprPush(e, B); } Jim_DecrRefCount(interp, skip); Jim_DecrRefCount(interp, A); Jim_DecrRefCount(interp, B); return JIM_OK; } static int JimExprOpNull(Jim_Interp *interp, struct JimExprState *e) { return JIM_OK; } enum { LAZY_NONE, LAZY_OP, LAZY_LEFT, LAZY_RIGHT }; /* name - precedence - arity - opcode */ static const struct Jim_ExprOperator Jim_ExprOperators[] = { [JIM_EXPROP_FUNC_INT] = {"int", 400, 1, JimExprOpNumUnary, LAZY_NONE}, [JIM_EXPROP_FUNC_DOUBLE] = {"double", 400, 1, JimExprOpNumUnary, LAZY_NONE}, [JIM_EXPROP_FUNC_ABS] = {"abs", 400, 1, JimExprOpNumUnary, LAZY_NONE}, [JIM_EXPROP_FUNC_ROUND] = {"round", 400, 1, JimExprOpNumUnary, LAZY_NONE}, #ifdef JIM_MATH_FUNCTIONS [JIM_EXPROP_FUNC_SIN] = {"sin", 400, 1, JimExprOpDoubleUnary, LAZY_NONE}, [JIM_EXPROP_FUNC_COS] = {"cos", 400, 1, JimExprOpDoubleUnary, LAZY_NONE}, [JIM_EXPROP_FUNC_TAN] = {"tan", 400, 1, JimExprOpDoubleUnary, LAZY_NONE}, [JIM_EXPROP_FUNC_ASIN] = {"asin", 400, 1, JimExprOpDoubleUnary, LAZY_NONE}, [JIM_EXPROP_FUNC_ACOS] = {"acos", 400, 1, JimExprOpDoubleUnary, LAZY_NONE}, [JIM_EXPROP_FUNC_ATAN] = {"atan", 400, 1, JimExprOpDoubleUnary, LAZY_NONE}, [JIM_EXPROP_FUNC_SINH] = {"sinh", 400, 1, JimExprOpDoubleUnary, LAZY_NONE}, [JIM_EXPROP_FUNC_COSH] = {"cosh", 400, 1, JimExprOpDoubleUnary, LAZY_NONE}, [JIM_EXPROP_FUNC_TANH] = {"tanh", 400, 1, JimExprOpDoubleUnary, LAZY_NONE}, [JIM_EXPROP_FUNC_CEIL] = {"ceil", 400, 1, JimExprOpDoubleUnary, LAZY_NONE}, [JIM_EXPROP_FUNC_FLOOR] = {"floor", 400, 1, JimExprOpDoubleUnary, LAZY_NONE}, [JIM_EXPROP_FUNC_EXP] = {"exp", 400, 1, JimExprOpDoubleUnary, LAZY_NONE}, [JIM_EXPROP_FUNC_LOG] = {"log", 400, 1, JimExprOpDoubleUnary, LAZY_NONE}, [JIM_EXPROP_FUNC_LOG10] = {"log10", 400, 1, JimExprOpDoubleUnary, LAZY_NONE}, [JIM_EXPROP_FUNC_SQRT] = {"sqrt", 400, 1, JimExprOpDoubleUnary, LAZY_NONE}, #endif [JIM_EXPROP_NOT] = {"!", 300, 1, JimExprOpNumUnary, LAZY_NONE}, [JIM_EXPROP_BITNOT] = {"~", 300, 1, JimExprOpIntUnary, LAZY_NONE}, [JIM_EXPROP_UNARYMINUS] = {NULL, 300, 1, JimExprOpNumUnary, LAZY_NONE}, [JIM_EXPROP_UNARYPLUS] = {NULL, 300, 1, JimExprOpNumUnary, LAZY_NONE}, [JIM_EXPROP_POW] = {"**", 250, 2, JimExprOpBin, LAZY_NONE}, [JIM_EXPROP_MUL] = {"*", 200, 2, JimExprOpBin, LAZY_NONE}, [JIM_EXPROP_DIV] = {"/", 200, 2, JimExprOpBin, LAZY_NONE}, [JIM_EXPROP_MOD] = {"%", 200, 2, JimExprOpIntBin, LAZY_NONE}, [JIM_EXPROP_SUB] = {"-", 100, 2, JimExprOpBin, LAZY_NONE}, [JIM_EXPROP_ADD] = {"+", 100, 2, JimExprOpBin, LAZY_NONE}, [JIM_EXPROP_ROTL] = {"<<<", 90, 2, JimExprOpIntBin, LAZY_NONE}, [JIM_EXPROP_ROTR] = {">>>", 90, 2, JimExprOpIntBin, LAZY_NONE}, [JIM_EXPROP_LSHIFT] = {"<<", 90, 2, JimExprOpIntBin, LAZY_NONE}, [JIM_EXPROP_RSHIFT] = {">>", 90, 2, JimExprOpIntBin, LAZY_NONE}, [JIM_EXPROP_LT] = {"<", 80, 2, JimExprOpBin, LAZY_NONE}, [JIM_EXPROP_GT] = {">", 80, 2, JimExprOpBin, LAZY_NONE}, [JIM_EXPROP_LTE] = {"<=", 80, 2, JimExprOpBin, LAZY_NONE}, [JIM_EXPROP_GTE] = {">=", 80, 2, JimExprOpBin, LAZY_NONE}, [JIM_EXPROP_NUMEQ] = {"==", 70, 2, JimExprOpBin, LAZY_NONE}, [JIM_EXPROP_NUMNE] = {"!=", 70, 2, JimExprOpBin, LAZY_NONE}, [JIM_EXPROP_STREQ] = {"eq", 60, 2, JimExprOpStrBin, LAZY_NONE}, [JIM_EXPROP_STRNE] = {"ne", 60, 2, JimExprOpStrBin, LAZY_NONE}, [JIM_EXPROP_STRIN] = {"in", 55, 2, JimExprOpStrBin, LAZY_NONE}, [JIM_EXPROP_STRNI] = {"ni", 55, 2, JimExprOpStrBin, LAZY_NONE}, [JIM_EXPROP_BITAND] = {"&", 50, 2, JimExprOpIntBin, LAZY_NONE}, [JIM_EXPROP_BITXOR] = {"^", 49, 2, JimExprOpIntBin, LAZY_NONE}, [JIM_EXPROP_BITOR] = {"|", 48, 2, JimExprOpIntBin, LAZY_NONE}, [JIM_EXPROP_LOGICAND] = {"&&", 10, 2, NULL, LAZY_OP}, [JIM_EXPROP_LOGICOR] = {"||", 9, 2, NULL, LAZY_OP}, [JIM_EXPROP_TERNARY] = {"?", 5, 2, JimExprOpNull, LAZY_OP}, [JIM_EXPROP_COLON] = {":", 5, 2, JimExprOpNull, LAZY_OP}, /* private operators */ [JIM_EXPROP_TERNARY_LEFT] = {NULL, 5, 2, JimExprOpTernaryLeft, LAZY_LEFT}, [JIM_EXPROP_TERNARY_RIGHT] = {NULL, 5, 2, JimExprOpNull, LAZY_RIGHT}, [JIM_EXPROP_COLON_LEFT] = {NULL, 5, 2, JimExprOpColonLeft, LAZY_LEFT}, [JIM_EXPROP_COLON_RIGHT] = {NULL, 5, 2, JimExprOpNull, LAZY_RIGHT}, [JIM_EXPROP_LOGICAND_LEFT] = {NULL, 10, 2, JimExprOpAndLeft, LAZY_LEFT}, [JIM_EXPROP_LOGICAND_RIGHT] = {NULL, 10, 2, JimExprOpAndOrRight, LAZY_RIGHT}, [JIM_EXPROP_LOGICOR_LEFT] = {NULL, 9, 2, JimExprOpOrLeft, LAZY_LEFT}, [JIM_EXPROP_LOGICOR_RIGHT] = {NULL, 9, 2, JimExprOpAndOrRight, LAZY_RIGHT}, }; #define JIM_EXPR_OPERATORS_NUM \ (sizeof(Jim_ExprOperators)/sizeof(struct Jim_ExprOperator)) static int JimParseExpression(struct JimParserCtx *pc) { /* Discard spaces and quoted newline */ while (isspace(UCHAR(*pc->p)) || (*(pc->p) == '\\' && *(pc->p + 1) == '\n')) { pc->p++; pc->len--; } if (pc->len == 0) { pc->tstart = pc->tend = pc->p; pc->tline = pc->linenr; pc->tt = JIM_TT_EOL; pc->eof = 1; return JIM_OK; } switch (*(pc->p)) { case '(': pc->tstart = pc->tend = pc->p; pc->tline = pc->linenr; pc->tt = JIM_TT_SUBEXPR_START; pc->p++; pc->len--; break; case ')': pc->tstart = pc->tend = pc->p; pc->tline = pc->linenr; pc->tt = JIM_TT_SUBEXPR_END; pc->p++; pc->len--; break; case '[': return JimParseCmd(pc); break; case '$': if (JimParseVar(pc) == JIM_ERR) return JimParseExprOperator(pc); else return JIM_OK; break; case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': case '.': return JimParseExprNumber(pc); break; case '"': case '{': /* Here it's possible to reuse the List String parsing. */ pc->tt = JIM_TT_NONE; /* Make sure it's sensed as a new word. */ return JimParseListStr(pc); break; case 'N': case 'I': case 'n': case 'i': if (JimParseExprIrrational(pc) == JIM_ERR) return JimParseExprOperator(pc); break; default: return JimParseExprOperator(pc); break; } return JIM_OK; } static int JimParseExprNumber(struct JimParserCtx *pc) { int allowdot = 1; int allowhex = 0; /* Assume an integer for now */ pc->tt = JIM_TT_EXPR_INT; pc->tstart = pc->p; pc->tline = pc->linenr; while (isdigit(UCHAR(*pc->p)) || (allowhex && isxdigit(UCHAR(*pc->p))) || (allowdot && *pc->p == '.') || (pc->p - pc->tstart == 1 && *pc->tstart == '0' && (*pc->p == 'x' || *pc->p == 'X')) ) { if ((*pc->p == 'x') || (*pc->p == 'X')) { allowhex = 1; allowdot = 0; } if (*pc->p == '.') { allowdot = 0; pc->tt = JIM_TT_EXPR_DOUBLE; } pc->p++; pc->len--; if (!allowhex && (*pc->p == 'e' || *pc->p == 'E') && (pc->p[1] == '-' || pc->p[1] == '+' || isdigit(UCHAR(pc->p[1])))) { pc->p += 2; pc->len -= 2; pc->tt = JIM_TT_EXPR_DOUBLE; } } pc->tend = pc->p - 1; return JIM_OK; } static int JimParseExprIrrational(struct JimParserCtx *pc) { const char *Tokens[] = { "NaN", "nan", "NAN", "Inf", "inf", "INF", NULL }; const char **token; for (token = Tokens; *token != NULL; token++) { int len = strlen(*token); if (strncmp(*token, pc->p, len) == 0) { pc->tstart = pc->p; pc->tend = pc->p + len - 1; pc->p += len; pc->len -= len; pc->tline = pc->linenr; pc->tt = JIM_TT_EXPR_DOUBLE; return JIM_OK; } } return JIM_ERR; } static int JimParseExprOperator(struct JimParserCtx *pc) { int i; int bestIdx = -1, bestLen = 0; /* Try to get the longest match. */ for (i = JIM_TT_EXPR_OP; i < (signed)JIM_EXPR_OPERATORS_NUM; i++) { const char *opname; int oplen; opname = Jim_ExprOperators[i].name; if (opname == NULL) { continue; } oplen = strlen(opname); if (strncmp(opname, pc->p, oplen) == 0 && oplen > bestLen) { bestIdx = i; bestLen = oplen; } } if (bestIdx == -1) { return JIM_ERR; } /* Validate paretheses around function arguments */ if (bestIdx >= JIM_EXPROP_FUNC_FIRST) { const char *p = pc->p + bestLen; int len = pc->len - bestLen; while (len && isspace(UCHAR(*p))) { len--; p++; } if (*p != '(') { return JIM_ERR; } } pc->tstart = pc->p; pc->tend = pc->p + bestLen - 1; pc->p += bestLen; pc->len -= bestLen; pc->tline = pc->linenr; pc->tt = bestIdx; return JIM_OK; } static const struct Jim_ExprOperator *JimExprOperatorInfoByOpcode(int opcode) { return &Jim_ExprOperators[opcode]; } #if defined(DEBUG_SHOW_SCRIPT) || defined(DEBUG_SHOW_SCRIPT_TOKENS) || defined(DEBUG_SHOW_EXPR) || defined(DEBUG_SHOW_SUBST) static const char *tt_name(int type) { static const char * const tt_names[JIM_TT_EXPR_OP] = { "NIL", "STR", "ESC", "VAR", "ARY", "CMD", "SEP", "EOL", "EOF", "LIN", "WRD", "(((", ")))", "INT", "DBL" }; if (type < JIM_TT_EXPR_OP) { return tt_names[type]; } else { const struct Jim_ExprOperator *op = JimExprOperatorInfoByOpcode(type); static char buf[20]; if (op && op->name) { return op->name; } sprintf(buf, "(%d)", type); return buf; } } #endif /* ----------------------------------------------------------------------------- * Expression Object * ---------------------------------------------------------------------------*/ static void FreeExprInternalRep(Jim_Interp *interp, Jim_Obj *objPtr); static void DupExprInternalRep(Jim_Interp *interp, Jim_Obj *srcPtr, Jim_Obj *dupPtr); static int SetExprFromAny(Jim_Interp *interp, struct Jim_Obj *objPtr); static const Jim_ObjType exprObjType = { "expression", FreeExprInternalRep, DupExprInternalRep, NULL, JIM_TYPE_REFERENCES, }; /* Expr bytecode structure */ typedef struct ExprByteCode { int len; /* Length as number of tokens. */ ScriptToken *token; /* Tokens array. */ int inUse; /* Used for sharing. */ } ExprByteCode; static void ExprFreeByteCode(Jim_Interp *interp, ExprByteCode * expr) { int i; for (i = 0; i < expr->len; i++) { Jim_DecrRefCount(interp, expr->token[i].objPtr); } Jim_Free(expr->token); Jim_Free(expr); } static void FreeExprInternalRep(Jim_Interp *interp, Jim_Obj *objPtr) { ExprByteCode *expr = (void *)objPtr->internalRep.ptr; if (expr) { if (--expr->inUse != 0) { return; } ExprFreeByteCode(interp, expr); } } static void DupExprInternalRep(Jim_Interp *interp, Jim_Obj *srcPtr, Jim_Obj *dupPtr) { JIM_NOTUSED(interp); JIM_NOTUSED(srcPtr); /* Just returns an simple string. */ dupPtr->typePtr = NULL; } /* Check if an expr program looks correct. */ static int ExprCheckCorrectness(ExprByteCode * expr) { int i; int stacklen = 0; int ternary = 0; /* Try to check if there are stack underflows, * and make sure at the end of the program there is * a single result on the stack. */ for (i = 0; i < expr->len; i++) { ScriptToken *t = &expr->token[i]; const struct Jim_ExprOperator *op = JimExprOperatorInfoByOpcode(t->type); if (op) { stacklen -= op->arity; if (stacklen < 0) { break; } if (t->type == JIM_EXPROP_TERNARY || t->type == JIM_EXPROP_TERNARY_LEFT) { ternary++; } else if (t->type == JIM_EXPROP_COLON || t->type == JIM_EXPROP_COLON_LEFT) { ternary--; } } /* All operations and operands add one to the stack */ stacklen++; } if (stacklen != 1 || ternary != 0) { return JIM_ERR; } return JIM_OK; } /* This procedure converts every occurrence of || and && opereators * in lazy unary versions. * * a b || is converted into: * * a |L b |R * * a b && is converted into: * * a &L b &R * * "|L" checks if 'a' is true: * 1) if it is true pushes 1 and skips instructions to reach * the opcode just after |R. * 2) if it is false does nothing. * "|R" checks if 'b' is true: * 1) if it is true pushes 1, otherwise pushes 0. * * "&L" checks if 'a' is true: * 1) if it is true does nothing. * 2) If it is false pushes 0 and skips instructions to reach * the opcode just after &R * "&R" checks if 'a' is true: * if it is true pushes 1, otherwise pushes 0. */ static void ExprAddLazyOperator(Jim_Interp *interp, ExprByteCode * expr, ParseToken *t) { int i; int leftindex, arity, offset; /* Search for the end of the first operator */ leftindex = expr->len - 1; arity = 1; while (arity) { ScriptToken *tt = &expr->token[leftindex]; if (tt->type >= JIM_TT_EXPR_OP) { arity += JimExprOperatorInfoByOpcode(tt->type)->arity; } arity--; leftindex--; } leftindex++; /* Move them up */ memmove(&expr->token[leftindex + 2], &expr->token[leftindex], sizeof(*expr->token) * (expr->len - leftindex)); expr->len += 2; offset = (expr->len - leftindex) - 1; /* Now we rely on the fact the the left and right version have opcodes * 1 and 2 after the main opcode respectively */ expr->token[leftindex + 1].type = t->type + 1; expr->token[leftindex + 1].objPtr = interp->emptyObj; expr->token[leftindex].type = JIM_TT_EXPR_INT; expr->token[leftindex].objPtr = Jim_NewIntObj(interp, offset); /* Now add the 'R' operator */ expr->token[expr->len].objPtr = interp->emptyObj; expr->token[expr->len].type = t->type + 2; expr->len++; /* Do we need to adjust the skip count for any &L, |L, ?L or :L in the left operand? */ for (i = leftindex - 1; i > 0; i--) { if (JimExprOperatorInfoByOpcode(expr->token[i].type)->lazy == LAZY_LEFT) { if (JimWideValue(expr->token[i - 1].objPtr) + i - 1 >= leftindex) { expr->token[i - 1].objPtr->internalRep.wideValue += 2; } } } } static void ExprAddOperator(Jim_Interp *interp, ExprByteCode * expr, ParseToken *t) { struct ScriptToken *token = &expr->token[expr->len]; if (JimExprOperatorInfoByOpcode(t->type)->lazy == LAZY_OP) { ExprAddLazyOperator(interp, expr, t); } else { token->objPtr = interp->emptyObj; token->type = t->type; expr->len++; } } /** * Returns the index of the COLON_LEFT to the left of 'right_index' * taking into account nesting. * * The expression *must* be well formed, thus a COLON_LEFT will always be found. */ static int ExprTernaryGetColonLeftIndex(ExprByteCode *expr, int right_index) { int ternary_count = 1; right_index--; while (right_index > 1) { if (expr->token[right_index].type == JIM_EXPROP_TERNARY_LEFT) { ternary_count--; } else if (expr->token[right_index].type == JIM_EXPROP_COLON_RIGHT) { ternary_count++; } else if (expr->token[right_index].type == JIM_EXPROP_COLON_LEFT && ternary_count == 1) { return right_index; } right_index--; } /*notreached*/ return -1; } /** * Find the left/right indices for the ternary expression to the left of 'right_index'. * * Returns 1 if found, and fills in *prev_right_index and *prev_left_index. * Otherwise returns 0. */ static int ExprTernaryGetMoveIndices(ExprByteCode *expr, int right_index, int *prev_right_index, int *prev_left_index) { int i = right_index - 1; int ternary_count = 1; while (i > 1) { if (expr->token[i].type == JIM_EXPROP_TERNARY_LEFT) { if (--ternary_count == 0 && expr->token[i - 2].type == JIM_EXPROP_COLON_RIGHT) { *prev_right_index = i - 2; *prev_left_index = ExprTernaryGetColonLeftIndex(expr, *prev_right_index); return 1; } } else if (expr->token[i].type == JIM_EXPROP_COLON_RIGHT) { if (ternary_count == 0) { return 0; } ternary_count++; } i--; } return 0; } /* * ExprTernaryReorderExpression description * ======================================== * * ?: is right-to-left associative which doesn't work with the stack-based * expression engine. The fix is to reorder the bytecode. * * The expression: * * expr 1?2:0?3:4 * * Has initial bytecode: * * '1' '2' (40=TERNARY_LEFT) '2' (41=TERNARY_RIGHT) '2' (43=COLON_LEFT) '0' (44=COLON_RIGHT) * '2' (40=TERNARY_LEFT) '3' (41=TERNARY_RIGHT) '2' (43=COLON_LEFT) '4' (44=COLON_RIGHT) * * The fix involves simulating this expression instead: * * expr 1?2:(0?3:4) * * With the following bytecode: * * '1' '2' (40=TERNARY_LEFT) '2' (41=TERNARY_RIGHT) '10' (43=COLON_LEFT) '0' '2' (40=TERNARY_LEFT) * '3' (41=TERNARY_RIGHT) '2' (43=COLON_LEFT) '4' (44=COLON_RIGHT) (44=COLON_RIGHT) * * i.e. The token COLON_RIGHT at index 8 is moved towards the end of the stack, all tokens above 8 * are shifted down and the skip count of the token JIM_EXPROP_COLON_LEFT at index 5 is * incremented by the amount tokens shifted down. The token JIM_EXPROP_COLON_RIGHT that is moved * is identified as immediately preceeding a token JIM_EXPROP_TERNARY_LEFT * * ExprTernaryReorderExpression works thus as follows : * - start from the end of the stack * - while walking towards the beginning of the stack * if token=JIM_EXPROP_COLON_RIGHT then * find the associated token JIM_EXPROP_TERNARY_LEFT, which allows to * find the associated token previous(JIM_EXPROP_COLON_RIGHT) * find the associated token previous(JIM_EXPROP_LEFT_RIGHT) * if all found then * perform the rotation * update the skip count of the token previous(JIM_EXPROP_LEFT_RIGHT) * end if * end if * * Note: care has to be taken for nested ternary constructs!!! */ static void ExprTernaryReorderExpression(Jim_Interp *interp, ExprByteCode *expr) { int i; for (i = expr->len - 1; i > 1; i--) { int prev_right_index; int prev_left_index; int j; ScriptToken tmp; if (expr->token[i].type != JIM_EXPROP_COLON_RIGHT) { continue; } /* COLON_RIGHT found: get the indexes needed to move the tokens in the stack (if any) */ if (ExprTernaryGetMoveIndices(expr, i, &prev_right_index, &prev_left_index) == 0) { continue; } /* ** rotate tokens down ** ** +-> [i] : JIM_EXPROP_COLON_RIGHT ** | | | ** | V V ** | [...] : ... ** | | | ** | V V ** | [...] : ... ** | | | ** | V V ** +- [prev_right_index] : JIM_EXPROP_COLON_RIGHT */ tmp = expr->token[prev_right_index]; for (j = prev_right_index; j < i; j++) { expr->token[j] = expr->token[j + 1]; } expr->token[i] = tmp; /* Increment the 'skip' count associated to the previous JIM_EXPROP_COLON_LEFT token * * This is 'colon left increment' = i - prev_right_index * * [prev_left_index] : JIM_EXPROP_LEFT_RIGHT * [prev_left_index-1] : skip_count * */ JimWideValue(expr->token[prev_left_index-1].objPtr) += (i - prev_right_index); /* Adjust for i-- in the loop */ i++; } } static ExprByteCode *ExprCreateByteCode(Jim_Interp *interp, const ParseTokenList *tokenlist) { Jim_Stack stack; ExprByteCode *expr; int ok = 1; int i; int prevtt = JIM_TT_NONE; int have_ternary = 0; /* -1 for EOL */ int count = tokenlist->count - 1; expr = Jim_Alloc(sizeof(*expr)); expr->inUse = 1; expr->len = 0; Jim_InitStack(&stack); /* Need extra bytecodes for lazy operators. * Also check for the ternary operator */ for (i = 0; i < tokenlist->count; i++) { ParseToken *t = &tokenlist->list[i]; if (JimExprOperatorInfoByOpcode(t->type)->lazy == LAZY_OP) { count += 2; /* Ternary is a lazy op but also needs reordering */ if (t->type == JIM_EXPROP_TERNARY) { have_ternary = 1; } } } expr->token = Jim_Alloc(sizeof(ScriptToken) * count); for (i = 0; i < tokenlist->count && ok; i++) { ParseToken *t = &tokenlist->list[i]; /* Next token will be stored here */ struct ScriptToken *token = &expr->token[expr->len]; if (t->type == JIM_TT_EOL) { break; } switch (t->type) { case JIM_TT_STR: case JIM_TT_ESC: case JIM_TT_VAR: case JIM_TT_DICTSUGAR: case JIM_TT_CMD: token->objPtr = Jim_NewStringObj(interp, t->token, t->len); token->type = t->type; expr->len++; break; case JIM_TT_EXPR_INT: token->objPtr = Jim_NewIntObj(interp, strtoull(t->token, NULL, 0)); token->type = t->type; expr->len++; break; case JIM_TT_EXPR_DOUBLE: token->objPtr = Jim_NewDoubleObj(interp, strtod(t->token, NULL)); token->type = t->type; expr->len++; break; case JIM_TT_SUBEXPR_START: Jim_StackPush(&stack, t); prevtt = JIM_TT_NONE; continue; case JIM_TT_SUBEXPR_END: ok = 0; while (Jim_StackLen(&stack)) { ParseToken *tt = Jim_StackPop(&stack); if (tt->type == JIM_TT_SUBEXPR_START) { ok = 1; break; } ExprAddOperator(interp, expr, tt); } if (!ok) { Jim_SetResultString(interp, "Unexpected close parenthesis", -1); goto err; } break; default:{ /* Must be an operator */ const struct Jim_ExprOperator *op; ParseToken *tt; /* Convert -/+ to unary minus or unary plus if necessary */ if (prevtt == JIM_TT_NONE || prevtt >= JIM_TT_EXPR_OP) { if (t->type == JIM_EXPROP_SUB) { t->type = JIM_EXPROP_UNARYMINUS; } else if (t->type == JIM_EXPROP_ADD) { t->type = JIM_EXPROP_UNARYPLUS; } } op = JimExprOperatorInfoByOpcode(t->type); /* Now handle precedence */ while ((tt = Jim_StackPeek(&stack)) != NULL) { const struct Jim_ExprOperator *tt_op = JimExprOperatorInfoByOpcode(tt->type); /* Note that right-to-left associativity of ?: operator is handled later */ if (op->arity != 1 && tt_op->precedence >= op->precedence) { ExprAddOperator(interp, expr, tt); Jim_StackPop(&stack); } else { break; } } Jim_StackPush(&stack, t); break; } } prevtt = t->type; } /* Reduce any remaining subexpr */ while (Jim_StackLen(&stack)) { ParseToken *tt = Jim_StackPop(&stack); if (tt->type == JIM_TT_SUBEXPR_START) { ok = 0; Jim_SetResultString(interp, "Missing close parenthesis", -1); goto err; } ExprAddOperator(interp, expr, tt); } if (have_ternary) { ExprTernaryReorderExpression(interp, expr); } err: /* Free the stack used for the compilation. */ Jim_FreeStack(&stack); for (i = 0; i < expr->len; i++) { Jim_IncrRefCount(expr->token[i].objPtr); } if (!ok) { ExprFreeByteCode(interp, expr); return NULL; } return expr; } /* This method takes the string representation of an expression * and generates a program for the Expr's stack-based VM. */ int SetExprFromAny(Jim_Interp *interp, struct Jim_Obj *objPtr) { int exprTextLen; const char *exprText; struct JimParserCtx parser; struct ExprByteCode *expr; ParseTokenList tokenlist; int rc = JIM_ERR; exprText = Jim_GetString(objPtr, &exprTextLen); /* Initially tokenise the expression into tokenlist */ ScriptTokenListInit(&tokenlist); JimParserInit(&parser, exprText, exprTextLen, 0); while (!JimParserEof(&parser)) { if (JimParseExpression(&parser) != JIM_OK) { ScriptTokenListFree(&tokenlist); invalidexpr: Jim_SetResultFormatted(interp, "syntax error in expression: \"%#s\"", objPtr); expr = NULL; goto err; } ScriptAddToken(&tokenlist, parser.tstart, parser.tend - parser.tstart + 1, parser.tt, parser.tline); } /* Now create the expression bytecode from the tokenlist */ expr = ExprCreateByteCode(interp, &tokenlist); /* No longer need the token list */ ScriptTokenListFree(&tokenlist); if (!expr) { goto err; } #ifdef DEBUG_SHOW_EXPR { int i; printf("==== Expr ====\n"); for (i = 0; i < expr->len; i++) { ScriptToken *t = &expr->token[i]; printf("[%2d] %s '%s'\n", i, tt_name(t->type), Jim_GetString(t->objPtr, NULL)); } } #endif /* Check program correctness. */ if (ExprCheckCorrectness(expr) != JIM_OK) { ExprFreeByteCode(interp, expr); goto invalidexpr; } rc = JIM_OK; err: /* Free the old internal rep and set the new one. */ Jim_FreeIntRep(interp, objPtr); Jim_SetIntRepPtr(objPtr, expr); objPtr->typePtr = &exprObjType; return rc; } static ExprByteCode *JimGetExpression(Jim_Interp *interp, Jim_Obj *objPtr) { if (objPtr->typePtr != &exprObjType) { if (SetExprFromAny(interp, objPtr) != JIM_OK) { return NULL; } } return (ExprByteCode *) Jim_GetIntRepPtr(objPtr); } /* ----------------------------------------------------------------------------- * Expressions evaluation. * Jim uses a specialized stack-based virtual machine for expressions, * that takes advantage of the fact that expr's operators * can't be redefined. * * Jim_EvalExpression() uses the bytecode compiled by * SetExprFromAny() method of the "expression" object. * * On success a Tcl Object containing the result of the evaluation * is stored into expResultPtrPtr (having refcount of 1), and JIM_OK is * returned. * On error the function returns a retcode != to JIM_OK and set a suitable * error on the interp. * ---------------------------------------------------------------------------*/ #define JIM_EE_STATICSTACK_LEN 10 int Jim_EvalExpression(Jim_Interp *interp, Jim_Obj *exprObjPtr, Jim_Obj **exprResultPtrPtr) { ExprByteCode *expr; Jim_Obj *staticStack[JIM_EE_STATICSTACK_LEN]; int i; int retcode = JIM_OK; struct JimExprState e; expr = JimGetExpression(interp, exprObjPtr); if (!expr) { return JIM_ERR; /* error in expression. */ } #ifdef JIM_OPTIMIZATION /* Check for one of the following common expressions used by while/for * * CONST * $a * !$a * $a < CONST, $a < $b * $a <= CONST, $a <= $b * $a > CONST, $a > $b * $a >= CONST, $a >= $b * $a != CONST, $a != $b * $a == CONST, $a == $b */ { Jim_Obj *objPtr; /* STEP 1 -- Check if there are the conditions to run the specialized * version of while */ switch (expr->len) { case 1: if (expr->token[0].type == JIM_TT_EXPR_INT) { *exprResultPtrPtr = expr->token[0].objPtr; Jim_IncrRefCount(*exprResultPtrPtr); return JIM_OK; } if (expr->token[0].type == JIM_TT_VAR) { objPtr = Jim_GetVariable(interp, expr->token[0].objPtr, JIM_ERRMSG); if (objPtr) { *exprResultPtrPtr = objPtr; Jim_IncrRefCount(*exprResultPtrPtr); return JIM_OK; } } break; case 2: if (expr->token[1].type == JIM_EXPROP_NOT && expr->token[0].type == JIM_TT_VAR) { jim_wide wideValue; objPtr = Jim_GetVariable(interp, expr->token[0].objPtr, JIM_NONE); if (objPtr && JimIsWide(objPtr) && Jim_GetWide(interp, objPtr, &wideValue) == JIM_OK) { *exprResultPtrPtr = wideValue ? interp->falseObj : interp->trueObj; Jim_IncrRefCount(*exprResultPtrPtr); return JIM_OK; } } break; case 3: if (expr->token[0].type == JIM_TT_VAR && (expr->token[1].type == JIM_TT_EXPR_INT || expr->token[1].type == JIM_TT_VAR)) { switch (expr->token[2].type) { case JIM_EXPROP_LT: case JIM_EXPROP_LTE: case JIM_EXPROP_GT: case JIM_EXPROP_GTE: case JIM_EXPROP_NUMEQ: case JIM_EXPROP_NUMNE:{ /* optimise ok */ jim_wide wideValueA; jim_wide wideValueB; objPtr = Jim_GetVariable(interp, expr->token[0].objPtr, JIM_NONE); if (objPtr && JimIsWide(objPtr) && Jim_GetWide(interp, objPtr, &wideValueA) == JIM_OK) { if (expr->token[1].type == JIM_TT_VAR) { objPtr = Jim_GetVariable(interp, expr->token[1].objPtr, JIM_NONE); } else { objPtr = expr->token[1].objPtr; } if (objPtr && JimIsWide(objPtr) && Jim_GetWide(interp, objPtr, &wideValueB) == JIM_OK) { int cmpRes; switch (expr->token[2].type) { case JIM_EXPROP_LT: cmpRes = wideValueA < wideValueB; break; case JIM_EXPROP_LTE: cmpRes = wideValueA <= wideValueB; break; case JIM_EXPROP_GT: cmpRes = wideValueA > wideValueB; break; case JIM_EXPROP_GTE: cmpRes = wideValueA >= wideValueB; break; case JIM_EXPROP_NUMEQ: cmpRes = wideValueA == wideValueB; break; case JIM_EXPROP_NUMNE: cmpRes = wideValueA != wideValueB; break; default: /*notreached */ cmpRes = 0; } *exprResultPtrPtr = cmpRes ? interp->trueObj : interp->falseObj; Jim_IncrRefCount(*exprResultPtrPtr); return JIM_OK; } } } } } break; } } #endif /* In order to avoid that the internal repr gets freed due to * shimmering of the exprObjPtr's object, we make the internal rep * shared. */ expr->inUse++; /* The stack-based expr VM itself */ /* Stack allocation. Expr programs have the feature that * a program of length N can't require a stack longer than * N. */ if (expr->len > JIM_EE_STATICSTACK_LEN) e.stack = Jim_Alloc(sizeof(Jim_Obj *) * expr->len); else e.stack = staticStack; e.stacklen = 0; /* Execute every instruction */ for (i = 0; i < expr->len && retcode == JIM_OK; i++) { Jim_Obj *objPtr; switch (expr->token[i].type) { case JIM_TT_EXPR_INT: case JIM_TT_EXPR_DOUBLE: case JIM_TT_STR: ExprPush(&e, expr->token[i].objPtr); break; case JIM_TT_VAR: objPtr = Jim_GetVariable(interp, expr->token[i].objPtr, JIM_ERRMSG); if (objPtr) { ExprPush(&e, objPtr); } else { retcode = JIM_ERR; } break; case JIM_TT_DICTSUGAR: objPtr = JimExpandDictSugar(interp, expr->token[i].objPtr); if (objPtr) { ExprPush(&e, objPtr); } else { retcode = JIM_ERR; } break; case JIM_TT_ESC: retcode = Jim_SubstObj(interp, expr->token[i].objPtr, &objPtr, JIM_NONE); if (retcode == JIM_OK) { ExprPush(&e, objPtr); } break; case JIM_TT_CMD: retcode = Jim_EvalObj(interp, expr->token[i].objPtr); if (retcode == JIM_OK) { ExprPush(&e, Jim_GetResult(interp)); } break; default:{ /* Find and execute the operation */ e.skip = 0; e.opcode = expr->token[i].type; retcode = JimExprOperatorInfoByOpcode(e.opcode)->funcop(interp, &e); /* Skip some opcodes if necessary */ i += e.skip; continue; } } } expr->inUse--; if (retcode == JIM_OK) { *exprResultPtrPtr = ExprPop(&e); } else { for (i = 0; i < e.stacklen; i++) { Jim_DecrRefCount(interp, e.stack[i]); } } if (e.stack != staticStack) { Jim_Free(e.stack); } return retcode; } int Jim_GetBoolFromExpr(Jim_Interp *interp, Jim_Obj *exprObjPtr, int *boolPtr) { int retcode; jim_wide wideValue; double doubleValue; Jim_Obj *exprResultPtr; retcode = Jim_EvalExpression(interp, exprObjPtr, &exprResultPtr); if (retcode != JIM_OK) return retcode; if (JimGetWideNoErr(interp, exprResultPtr, &wideValue) != JIM_OK) { if (Jim_GetDouble(interp, exprResultPtr, &doubleValue) != JIM_OK) { Jim_DecrRefCount(interp, exprResultPtr); return JIM_ERR; } else { Jim_DecrRefCount(interp, exprResultPtr); *boolPtr = doubleValue != 0; return JIM_OK; } } *boolPtr = wideValue != 0; Jim_DecrRefCount(interp, exprResultPtr); return JIM_OK; } /* ----------------------------------------------------------------------------- * ScanFormat String Object * ---------------------------------------------------------------------------*/ /* This Jim_Obj will held a parsed representation of a format string passed to * the Jim_ScanString command. For error diagnostics, the scanformat string has * to be parsed in its entirely first and then, if correct, can be used for * scanning. To avoid endless re-parsing, the parsed representation will be * stored in an internal representation and re-used for performance reason. */ /* A ScanFmtPartDescr will held the information of /one/ part of the whole * scanformat string. This part will later be used to extract information * out from the string to be parsed by Jim_ScanString */ typedef struct ScanFmtPartDescr { char type; /* Type of conversion (e.g. c, d, f) */ char modifier; /* Modify type (e.g. l - long, h - short */ size_t width; /* Maximal width of input to be converted */ int pos; /* -1 - no assign, 0 - natural pos, >0 - XPG3 pos */ char *arg; /* Specification of a CHARSET conversion */ char *prefix; /* Prefix to be scanned literally before conversion */ } ScanFmtPartDescr; /* The ScanFmtStringObj will hold the internal representation of a scanformat * string parsed and separated in part descriptions. Furthermore it contains * the original string representation of the scanformat string to allow for * fast update of the Jim_Obj's string representation part. * * As an add-on the internal object representation adds some scratch pad area * for usage by Jim_ScanString to avoid endless allocating and freeing of * memory for purpose of string scanning. * * The error member points to a static allocated string in case of a mal- * formed scanformat string or it contains '0' (NULL) in case of a valid * parse representation. * * The whole memory of the internal representation is allocated as a single * area of memory that will be internally separated. So freeing and duplicating * of such an object is cheap */ typedef struct ScanFmtStringObj { jim_wide size; /* Size of internal repr in bytes */ char *stringRep; /* Original string representation */ size_t count; /* Number of ScanFmtPartDescr contained */ size_t convCount; /* Number of conversions that will assign */ size_t maxPos; /* Max position index if XPG3 is used */ const char *error; /* Ptr to error text (NULL if no error */ char *scratch; /* Some scratch pad used by Jim_ScanString */ ScanFmtPartDescr descr[1]; /* The vector of partial descriptions */ } ScanFmtStringObj; static void FreeScanFmtInternalRep(Jim_Interp *interp, Jim_Obj *objPtr); static void DupScanFmtInternalRep(Jim_Interp *interp, Jim_Obj *srcPtr, Jim_Obj *dupPtr); static void UpdateStringOfScanFmt(Jim_Obj *objPtr); static const Jim_ObjType scanFmtStringObjType = { "scanformatstring", FreeScanFmtInternalRep, DupScanFmtInternalRep, UpdateStringOfScanFmt, JIM_TYPE_NONE, }; void FreeScanFmtInternalRep(Jim_Interp *interp, Jim_Obj *objPtr) { JIM_NOTUSED(interp); Jim_Free((char *)objPtr->internalRep.ptr); objPtr->internalRep.ptr = 0; } void DupScanFmtInternalRep(Jim_Interp *interp, Jim_Obj *srcPtr, Jim_Obj *dupPtr) { size_t size = (size_t) ((ScanFmtStringObj *) srcPtr->internalRep.ptr)->size; ScanFmtStringObj *newVec = (ScanFmtStringObj *) Jim_Alloc(size); JIM_NOTUSED(interp); memcpy(newVec, srcPtr->internalRep.ptr, size); dupPtr->internalRep.ptr = newVec; dupPtr->typePtr = &scanFmtStringObjType; } void UpdateStringOfScanFmt(Jim_Obj *objPtr) { char *bytes = ((ScanFmtStringObj *) objPtr->internalRep.ptr)->stringRep; objPtr->bytes = Jim_StrDup(bytes); objPtr->length = strlen(bytes); } /* SetScanFmtFromAny will parse a given string and create the internal * representation of the format specification. In case of an error * the error data member of the internal representation will be set * to an descriptive error text and the function will be left with * JIM_ERR to indicate unsucessful parsing (aka. malformed scanformat * specification */ static int SetScanFmtFromAny(Jim_Interp *interp, Jim_Obj *objPtr) { ScanFmtStringObj *fmtObj; char *buffer; int maxCount, i, approxSize, lastPos = -1; const char *fmt = objPtr->bytes; int maxFmtLen = objPtr->length; const char *fmtEnd = fmt + maxFmtLen; int curr; Jim_FreeIntRep(interp, objPtr); /* Count how many conversions could take place maximally */ for (i = 0, maxCount = 0; i < maxFmtLen; ++i) if (fmt[i] == '%') ++maxCount; /* Calculate an approximation of the memory necessary */ approxSize = sizeof(ScanFmtStringObj) /* Size of the container */ +(maxCount + 1) * sizeof(ScanFmtPartDescr) /* Size of all partials */ +maxFmtLen * sizeof(char) + 3 + 1 /* Scratch + "%n" + '\0' */ + maxFmtLen * sizeof(char) + 1 /* Original stringrep */ + maxFmtLen * sizeof(char) /* Arg for CHARSETs */ +(maxCount + 1) * sizeof(char) /* '\0' for every partial */ +1; /* safety byte */ fmtObj = (ScanFmtStringObj *) Jim_Alloc(approxSize); memset(fmtObj, 0, approxSize); fmtObj->size = approxSize; fmtObj->maxPos = 0; fmtObj->scratch = (char *)&fmtObj->descr[maxCount + 1]; fmtObj->stringRep = fmtObj->scratch + maxFmtLen + 3 + 1; memcpy(fmtObj->stringRep, fmt, maxFmtLen); buffer = fmtObj->stringRep + maxFmtLen + 1; objPtr->internalRep.ptr = fmtObj; objPtr->typePtr = &scanFmtStringObjType; for (i = 0, curr = 0; fmt < fmtEnd; ++fmt) { int width = 0, skip; ScanFmtPartDescr *descr = &fmtObj->descr[curr]; fmtObj->count++; descr->width = 0; /* Assume width unspecified */ /* Overread and store any "literal" prefix */ if (*fmt != '%' || fmt[1] == '%') { descr->type = 0; descr->prefix = &buffer[i]; for (; fmt < fmtEnd; ++fmt) { if (*fmt == '%') { if (fmt[1] != '%') break; ++fmt; } buffer[i++] = *fmt; } buffer[i++] = 0; } /* Skip the conversion introducing '%' sign */ ++fmt; /* End reached due to non-conversion literal only? */ if (fmt >= fmtEnd) goto done; descr->pos = 0; /* Assume "natural" positioning */ if (*fmt == '*') { descr->pos = -1; /* Okay, conversion will not be assigned */ ++fmt; } else fmtObj->convCount++; /* Otherwise count as assign-conversion */ /* Check if next token is a number (could be width or pos */ if (sscanf(fmt, "%d%n", &width, &skip) == 1) { fmt += skip; /* Was the number a XPG3 position specifier? */ if (descr->pos != -1 && *fmt == '$') { int prev; ++fmt; descr->pos = width; width = 0; /* Look if "natural" postioning and XPG3 one was mixed */ if ((lastPos == 0 && descr->pos > 0) || (lastPos > 0 && descr->pos == 0)) { fmtObj->error = "cannot mix \"%\" and \"%n$\" conversion specifiers"; return JIM_ERR; } /* Look if this position was already used */ for (prev = 0; prev < curr; ++prev) { if (fmtObj->descr[prev].pos == -1) continue; if (fmtObj->descr[prev].pos == descr->pos) { fmtObj->error = "variable is assigned by multiple \"%n$\" conversion specifiers"; return JIM_ERR; } } /* Try to find a width after the XPG3 specifier */ if (sscanf(fmt, "%d%n", &width, &skip) == 1) { descr->width = width; fmt += skip; } if (descr->pos > 0 && (size_t) descr->pos > fmtObj->maxPos) fmtObj->maxPos = descr->pos; } else { /* Number was not a XPG3, so it has to be a width */ descr->width = width; } } /* If positioning mode was undetermined yet, fix this */ if (lastPos == -1) lastPos = descr->pos; /* Handle CHARSET conversion type ... */ if (*fmt == '[') { int swapped = 1, beg = i, end, j; descr->type = '['; descr->arg = &buffer[i]; ++fmt; if (*fmt == '^') buffer[i++] = *fmt++; if (*fmt == ']') buffer[i++] = *fmt++; while (*fmt && *fmt != ']') buffer[i++] = *fmt++; if (*fmt != ']') { fmtObj->error = "unmatched [ in format string"; return JIM_ERR; } end = i; buffer[i++] = 0; /* In case a range fence was given "backwards", swap it */ while (swapped) { swapped = 0; for (j = beg + 1; j < end - 1; ++j) { if (buffer[j] == '-' && buffer[j - 1] > buffer[j + 1]) { char tmp = buffer[j - 1]; buffer[j - 1] = buffer[j + 1]; buffer[j + 1] = tmp; swapped = 1; } } } } else { /* Remember any valid modifier if given */ if (strchr("hlL", *fmt) != 0) descr->modifier = tolower((int)*fmt++); descr->type = *fmt; if (strchr("efgcsndoxui", *fmt) == 0) { fmtObj->error = "bad scan conversion character"; return JIM_ERR; } else if (*fmt == 'c' && descr->width != 0) { fmtObj->error = "field width may not be specified in %c " "conversion"; return JIM_ERR; } else if (*fmt == 'u' && descr->modifier == 'l') { fmtObj->error = "unsigned wide not supported"; return JIM_ERR; } } curr++; } done: return JIM_OK; } /* Some accessor macros to allow lowlevel access to fields of internal repr */ #define FormatGetCnvCount(_fo_) \ ((ScanFmtStringObj*)((_fo_)->internalRep.ptr))->convCount #define FormatGetMaxPos(_fo_) \ ((ScanFmtStringObj*)((_fo_)->internalRep.ptr))->maxPos #define FormatGetError(_fo_) \ ((ScanFmtStringObj*)((_fo_)->internalRep.ptr))->error /* JimScanAString is used to scan an unspecified string that ends with * next WS, or a string that is specified via a charset. * */ static Jim_Obj *JimScanAString(Jim_Interp *interp, const char *sdescr, const char *str) { char *buffer = Jim_StrDup(str); char *p = buffer; while (*str) { int c; int n; if (!sdescr && isspace(UCHAR(*str))) break; /* EOS via WS if unspecified */ n = utf8_tounicode(str, &c); if (sdescr && !JimCharsetMatch(sdescr, c, JIM_CHARSET_SCAN)) break; while (n--) *p++ = *str++; } *p = 0; return Jim_NewStringObjNoAlloc(interp, buffer, p - buffer); } /* ScanOneEntry will scan one entry out of the string passed as argument. * It use the sscanf() function for this task. After extracting and * converting of the value, the count of scanned characters will be * returned of -1 in case of no conversion tool place and string was * already scanned thru */ static int ScanOneEntry(Jim_Interp *interp, const char *str, int pos, int strLen, ScanFmtStringObj * fmtObj, long idx, Jim_Obj **valObjPtr) { const char *tok; const ScanFmtPartDescr *descr = &fmtObj->descr[idx]; size_t scanned = 0; size_t anchor = pos; int i; Jim_Obj *tmpObj = NULL; /* First pessimistically assume, we will not scan anything :-) */ *valObjPtr = 0; if (descr->prefix) { /* There was a prefix given before the conversion, skip it and adjust * the string-to-be-parsed accordingly */ /* XXX: Should be checking strLen, not str[pos] */ for (i = 0; pos < strLen && descr->prefix[i]; ++i) { /* If prefix require, skip WS */ if (isspace(UCHAR(descr->prefix[i]))) while (pos < strLen && isspace(UCHAR(str[pos]))) ++pos; else if (descr->prefix[i] != str[pos]) break; /* Prefix do not match here, leave the loop */ else ++pos; /* Prefix matched so far, next round */ } if (pos >= strLen) { return -1; /* All of str consumed: EOF condition */ } else if (descr->prefix[i] != 0) return 0; /* Not whole prefix consumed, no conversion possible */ } /* For all but following conversion, skip leading WS */ if (descr->type != 'c' && descr->type != '[' && descr->type != 'n') while (isspace(UCHAR(str[pos]))) ++pos; /* Determine how much skipped/scanned so far */ scanned = pos - anchor; /* %c is a special, simple case. no width */ if (descr->type == 'n') { /* Return pseudo conversion means: how much scanned so far? */ *valObjPtr = Jim_NewIntObj(interp, anchor + scanned); } else if (pos >= strLen) { /* Cannot scan anything, as str is totally consumed */ return -1; } else if (descr->type == 'c') { int c; scanned += utf8_tounicode(&str[pos], &c); *valObjPtr = Jim_NewIntObj(interp, c); return scanned; } else { /* Processing of conversions follows ... */ if (descr->width > 0) { /* Do not try to scan as fas as possible but only the given width. * To ensure this, we copy the part that should be scanned. */ size_t sLen = utf8_strlen(&str[pos], strLen - pos); size_t tLen = descr->width > sLen ? sLen : descr->width; tmpObj = Jim_NewStringObjUtf8(interp, str + pos, tLen); tok = tmpObj->bytes; } else { /* As no width was given, simply refer to the original string */ tok = &str[pos]; } switch (descr->type) { case 'd': case 'o': case 'x': case 'u': case 'i':{ char *endp; /* Position where the number finished */ jim_wide w; int base = descr->type == 'o' ? 8 : descr->type == 'x' ? 16 : descr->type == 'i' ? 0 : 10; /* Try to scan a number with the given base */ w = strtoull(tok, &endp, base); if (endp == tok && base == 0) { /* If scanning failed, and base was undetermined, simply * put it to 10 and try once more. This should catch the * case where %i begin to parse a number prefix (e.g. * '0x' but no further digits follows. This will be * handled as a ZERO followed by a char 'x' by Tcl */ w = strtoull(tok, &endp, 10); } if (endp != tok) { /* There was some number sucessfully scanned! */ *valObjPtr = Jim_NewIntObj(interp, w); /* Adjust the number-of-chars scanned so far */ scanned += endp - tok; } else { /* Nothing was scanned. We have to determine if this * happened due to e.g. prefix mismatch or input str * exhausted */ scanned = *tok ? 0 : -1; } break; } case 's': case '[':{ *valObjPtr = JimScanAString(interp, descr->arg, tok); scanned += Jim_Length(*valObjPtr); break; } case 'e': case 'f': case 'g':{ char *endp; double value = strtod(tok, &endp); if (endp != tok) { /* There was some number sucessfully scanned! */ *valObjPtr = Jim_NewDoubleObj(interp, value); /* Adjust the number-of-chars scanned so far */ scanned += endp - tok; } else { /* Nothing was scanned. We have to determine if this * happened due to e.g. prefix mismatch or input str * exhausted */ scanned = *tok ? 0 : -1; } break; } } /* If a substring was allocated (due to pre-defined width) do not * forget to free it */ if (tmpObj) { Jim_FreeNewObj(interp, tmpObj); } } return scanned; } /* Jim_ScanString is the workhorse of string scanning. It will scan a given * string and returns all converted (and not ignored) values in a list back * to the caller. If an error occured, a NULL pointer will be returned */ Jim_Obj *Jim_ScanString(Jim_Interp *interp, Jim_Obj *strObjPtr, Jim_Obj *fmtObjPtr, int flags) { size_t i, pos; int scanned = 1; const char *str = Jim_GetString(strObjPtr, NULL); int strLen = Jim_Utf8Length(interp, strObjPtr); Jim_Obj *resultList = 0; Jim_Obj **resultVec = 0; int resultc; Jim_Obj *emptyStr = 0; ScanFmtStringObj *fmtObj; /* This should never happen. The format object should already be of the correct type */ if (fmtObjPtr->typePtr != &scanFmtStringObjType) { Jim_Panic(interp, "Jim_ScanString() for non-scan format"); exit(1); } fmtObj = (ScanFmtStringObj *) fmtObjPtr->internalRep.ptr; /* Check if format specification was valid */ if (fmtObj->error != 0) { if (flags & JIM_ERRMSG) Jim_SetResultString(interp, fmtObj->error, -1); return 0; } /* Allocate a new "shared" empty string for all unassigned conversions */ emptyStr = Jim_NewEmptyStringObj(interp); Jim_IncrRefCount(emptyStr); /* Create a list and fill it with empty strings up to max specified XPG3 */ resultList = Jim_NewListObj(interp, 0, 0); if (fmtObj->maxPos > 0) { for (i = 0; i < fmtObj->maxPos; ++i) Jim_ListAppendElement(interp, resultList, emptyStr); JimListGetElements(interp, resultList, &resultc, &resultVec); } /* Now handle every partial format description */ for (i = 0, pos = 0; i < fmtObj->count; ++i) { ScanFmtPartDescr *descr = &(fmtObj->descr[i]); Jim_Obj *value = 0; /* Only last type may be "literal" w/o conversion - skip it! */ if (descr->type == 0) continue; /* As long as any conversion could be done, we will proceed */ if (scanned > 0) scanned = ScanOneEntry(interp, str, pos, strLen, fmtObj, i, &value); /* In case our first try results in EOF, we will leave */ if (scanned == -1 && i == 0) goto eof; /* Advance next pos-to-be-scanned for the amount scanned already */ pos += scanned; /* value == 0 means no conversion took place so take empty string */ if (value == 0) value = Jim_NewEmptyStringObj(interp); /* If value is a non-assignable one, skip it */ if (descr->pos == -1) { Jim_FreeNewObj(interp, value); } else if (descr->pos == 0) /* Otherwise append it to the result list if no XPG3 was given */ Jim_ListAppendElement(interp, resultList, value); else if (resultVec[descr->pos - 1] == emptyStr) { /* But due to given XPG3, put the value into the corr. slot */ Jim_DecrRefCount(interp, resultVec[descr->pos - 1]); Jim_IncrRefCount(value); resultVec[descr->pos - 1] = value; } else { /* Otherwise, the slot was already used - free obj and ERROR */ Jim_FreeNewObj(interp, value); goto err; } } Jim_DecrRefCount(interp, emptyStr); return resultList; eof: Jim_DecrRefCount(interp, emptyStr); Jim_FreeNewObj(interp, resultList); return (Jim_Obj *)EOF; err: Jim_DecrRefCount(interp, emptyStr); Jim_FreeNewObj(interp, resultList); return 0; } /* ----------------------------------------------------------------------------- * Pseudo Random Number Generation * ---------------------------------------------------------------------------*/ static void JimPrngSeed(Jim_Interp *interp, const unsigned char *seed, int seedLen); /* Initialize the sbox with the numbers from 0 to 255 */ static void JimPrngInit(Jim_Interp *interp) { int i; /* XXX: Move off stack */ unsigned int seed[256]; unsigned rseed; /* uninitialized! */ interp->prngState = Jim_Alloc(sizeof(Jim_PrngState)); for (i = 0; i < 256; i++) seed[i] = (rand_r(&rseed) ^ time(NULL) ^ clock()); JimPrngSeed(interp, (unsigned char *)seed, sizeof(int) * 256); } /* Generates N bytes of random data */ static void JimRandomBytes(Jim_Interp *interp, void *dest, unsigned int len) { Jim_PrngState *prng; unsigned char *destByte = (unsigned char *)dest; unsigned int si, sj, x; /* initialization, only needed the first time */ if (interp->prngState == NULL) JimPrngInit(interp); prng = interp->prngState; /* generates 'len' bytes of pseudo-random numbers */ for (x = 0; x < len; x++) { prng->i = (prng->i + 1) & 0xff; si = prng->sbox[prng->i]; prng->j = (prng->j + si) & 0xff; sj = prng->sbox[prng->j]; prng->sbox[prng->i] = sj; prng->sbox[prng->j] = si; *destByte++ = prng->sbox[(si + sj) & 0xff]; } } /* Re-seed the generator with user-provided bytes */ static void JimPrngSeed(Jim_Interp *interp, const unsigned char *seed, int seedLen) { int i; /* XXX: Move off stack */ unsigned char buf[256]; Jim_PrngState *prng; /* initialization, only needed the first time */ if (interp->prngState == NULL) JimPrngInit(interp); prng = interp->prngState; /* Set the sbox[i] with i */ for (i = 0; i < 256; i++) prng->sbox[i] = i; /* Now use the seed to perform a random permutation of the sbox */ for (i = 0; i < seedLen; i++) { unsigned char t; t = prng->sbox[i & 0xFF]; prng->sbox[i & 0xFF] = prng->sbox[seed[i]]; prng->sbox[seed[i]] = t; } prng->i = prng->j = 0; /* discard the first 256 bytes of stream. */ JimRandomBytes(interp, buf, 256); } /* [incr] */ static int Jim_IncrCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { jim_wide wideValue, increment = 1; Jim_Obj *intObjPtr; if (argc != 2 && argc != 3) { Jim_WrongNumArgs(interp, 1, argv, "varName ?increment?"); return JIM_ERR; } if (argc == 3) { if (Jim_GetWide(interp, argv[2], &increment) != JIM_OK) return JIM_ERR; } intObjPtr = Jim_GetVariable(interp, argv[1], JIM_UNSHARED); if (!intObjPtr) { /* Set missing variable to 0 */ wideValue = 0; } else if (Jim_GetWide(interp, intObjPtr, &wideValue) != JIM_OK) { return JIM_ERR; } if (!intObjPtr || Jim_IsShared(intObjPtr)) { intObjPtr = Jim_NewIntObj(interp, wideValue + increment); if (Jim_SetVariable(interp, argv[1], intObjPtr) != JIM_OK) { Jim_FreeNewObj(interp, intObjPtr); return JIM_ERR; } } else { Jim_SetWide(interp, intObjPtr, wideValue + increment); /* The following step is required in order to invalidate the * string repr of "FOO" if the var name is on the form of "FOO(IDX)" */ if (argv[1]->typePtr != &variableObjType) { if (Jim_SetVariable(interp, argv[1], intObjPtr) != JIM_OK) { return JIM_ERR; } } } Jim_SetResult(interp, intObjPtr); return JIM_OK; } /* ----------------------------------------------------------------------------- * Eval * ---------------------------------------------------------------------------*/ #define JIM_EVAL_SARGV_LEN 8 /* static arguments vector length */ #define JIM_EVAL_SINTV_LEN 8 /* static interpolation vector length */ /* Handle calls to the [unknown] command */ static int JimUnknown(Jim_Interp *interp, int argc, Jim_Obj *const *argv, const char *filename, int linenr) { Jim_Obj **v, *sv[JIM_EVAL_SARGV_LEN]; int retCode; /* If JimUnknown() is recursively called too many times... * done here */ if (interp->unknown_called > 50) { return JIM_ERR; } /* If the [unknown] command does not exists returns * just now */ if (Jim_GetCommand(interp, interp->unknown, JIM_NONE) == NULL) return JIM_ERR; /* The object interp->unknown just contains * the "unknown" string, it is used in order to * avoid to lookup the unknown command every time * but instread to cache the result. */ if (argc + 1 <= JIM_EVAL_SARGV_LEN) v = sv; else v = Jim_Alloc(sizeof(Jim_Obj *) * (argc + 1)); /* Make a copy of the arguments vector, but shifted on * the right of one position. The command name of the * command will be instead the first argument of the * [unknown] call. */ memcpy(v + 1, argv, sizeof(Jim_Obj *) * argc); v[0] = interp->unknown; /* Call it */ interp->unknown_called++; retCode = JimEvalObjVector(interp, argc + 1, v, filename, linenr); interp->unknown_called--; /* Clean up */ if (v != sv) Jim_Free(v); return retCode; } /* Eval the object vector 'objv' composed of 'objc' elements. * Every element is used as single argument. * Jim_EvalObj() will call this function every time its object * argument is of "list" type, with no string representation. * * This is possible because the string representation of a * list object generated by the UpdateStringOfList is made * in a way that ensures that every list element is a different * command argument. */ static int JimEvalObjVector(Jim_Interp *interp, int objc, Jim_Obj *const *objv, const char *filename, int linenr) { int i, retcode; Jim_Cmd *cmdPtr; /* Incr refcount of arguments. */ for (i = 0; i < objc; i++) Jim_IncrRefCount(objv[i]); /* Command lookup */ cmdPtr = Jim_GetCommand(interp, objv[0], JIM_ERRMSG); if (cmdPtr == NULL) { retcode = JimUnknown(interp, objc, objv, filename, linenr); } else { /* Call it -- Make sure result is an empty object. */ JimIncrCmdRefCount(cmdPtr); Jim_SetEmptyResult(interp); if (cmdPtr->cmdProc) { interp->cmdPrivData = cmdPtr->privData; retcode = cmdPtr->cmdProc(interp, objc, objv); } else { retcode = JimCallProcedure(interp, cmdPtr, filename, linenr, objc, objv); } JimDecrCmdRefCount(interp, cmdPtr); } /* Decr refcount of arguments and return the retcode */ for (i = 0; i < objc; i++) Jim_DecrRefCount(interp, objv[i]); return retcode; } int Jim_EvalObjVector(Jim_Interp *interp, int objc, Jim_Obj *const *objv) { return JimEvalObjVector(interp, objc, objv, NULL, 0); } /** * Invokes 'prefix' as a command with the objv array as arguments. */ int Jim_EvalObjPrefix(Jim_Interp *interp, const char *prefix, int objc, Jim_Obj *const *objv) { int i; int ret; Jim_Obj **nargv = Jim_Alloc((objc + 1) * sizeof(*nargv)); nargv[0] = Jim_NewStringObj(interp, prefix, -1); for (i = 0; i < objc; i++) { nargv[i + 1] = objv[i]; } ret = Jim_EvalObjVector(interp, objc + 1, nargv); Jim_Free(nargv); return ret; } /* Interpolate the given tokens into a unique Jim_Obj returned by reference * via *objPtrPtr. This function is only called by Jim_EvalObj(). * The returned object has refcount = 0. */ int Jim_InterpolateTokens(Jim_Interp *interp, ScriptToken * token, int tokens, Jim_Obj **objPtrPtr) { int totlen = 0, i, retcode; Jim_Obj **intv; Jim_Obj *sintv[JIM_EVAL_SINTV_LEN]; Jim_Obj *objPtr; char *s; if (tokens <= JIM_EVAL_SINTV_LEN) intv = sintv; else intv = Jim_Alloc(sizeof(Jim_Obj *) * tokens); /* Compute every token forming the argument * in the intv objects vector. */ for (i = 0; i < tokens; i++) { switch (token[i].type) { case JIM_TT_ESC: case JIM_TT_STR: intv[i] = token[i].objPtr; break; case JIM_TT_VAR: intv[i] = Jim_GetVariable(interp, token[i].objPtr, JIM_ERRMSG); if (!intv[i]) { retcode = JIM_ERR; goto err; } break; case JIM_TT_DICTSUGAR: intv[i] = JimExpandDictSugar(interp, token[i].objPtr); if (!intv[i]) { retcode = JIM_ERR; goto err; } break; case JIM_TT_CMD: retcode = Jim_EvalObj(interp, token[i].objPtr); if (retcode != JIM_OK) goto err; intv[i] = Jim_GetResult(interp); break; default: Jim_Panic(interp, "default token type reached " "in Jim_InterpolateTokens()."); exit(1); } Jim_IncrRefCount(intv[i]); /* Make sure there is a valid * string rep, and add the string * length to the total legnth. */ Jim_GetString(intv[i], NULL); totlen += intv[i]->length; } /* Concatenate every token in an unique * object. */ objPtr = Jim_NewStringObjNoAlloc(interp, NULL, 0); if (tokens == 4 && token[0].type == JIM_TT_ESC && token[1].type == JIM_TT_ESC && token[2].type == JIM_TT_VAR) { /* May be able to do fast interpolated object -> dictSubst */ objPtr->typePtr = &interpolatedObjType; objPtr->internalRep.twoPtrValue.ptr1 = token; objPtr->internalRep.twoPtrValue.ptr2 = intv[2]; Jim_IncrRefCount(intv[2]); } s = objPtr->bytes = Jim_Alloc(totlen + 1); objPtr->length = totlen; for (i = 0; i < tokens; i++) { memcpy(s, intv[i]->bytes, intv[i]->length); s += intv[i]->length; Jim_DecrRefCount(interp, intv[i]); } objPtr->bytes[totlen] = '\0'; /* Free the intv vector if not static. */ if (tokens > JIM_EVAL_SINTV_LEN) Jim_Free(intv); *objPtrPtr = objPtr; return JIM_OK; err: i--; for (; i >= 0; i--) Jim_DecrRefCount(interp, intv[i]); if (tokens > JIM_EVAL_SINTV_LEN) Jim_Free(intv); return retcode; } static void JimAddErrorToStack(Jim_Interp *interp, int retcode, const char *filename, int line) { int rc = retcode; if (rc == JIM_ERR && !interp->errorFlag) { /* This is the first error, so save the file/line information and reset the stack */ interp->errorFlag = 1; JimSetErrorFileName(interp, filename); JimSetErrorLineNumber(interp, line); JimResetStackTrace(interp); /* Always add a level where the error first occurs */ interp->addStackTrace++; } /* Now if this is an "interesting" level, add it to the stack trace */ if (rc == JIM_ERR && interp->addStackTrace > 0) { /* Add the stack info for the current level */ JimAppendStackTrace(interp, Jim_GetString(interp->errorProc, NULL), filename, line); /* Note: if we didn't have a filename for this level, * don't clear the addStackTrace flag * so we can pick it up at the next level */ if (*filename) { interp->addStackTrace = 0; } Jim_DecrRefCount(interp, interp->errorProc); interp->errorProc = interp->emptyObj; Jim_IncrRefCount(interp->errorProc); } else if (rc == JIM_RETURN && interp->returnCode == JIM_ERR) { /* Propagate the addStackTrace value through 'return -code error' */ } else { interp->addStackTrace = 0; } } /* And delete any local procs */ static void JimDeleteLocalProcs(Jim_Interp *interp) { if (interp->localProcs) { char *procname; while ((procname = Jim_StackPop(interp->localProcs)) != NULL) { Jim_DeleteCommand(interp, procname); Jim_Free(procname); } Jim_FreeStack(interp->localProcs); Jim_Free(interp->localProcs); interp->localProcs = NULL; } } /* If listPtr is a list, call JimEvalObjVector() with the given source info. * Otherwise eval with Jim_EvalObj() */ int Jim_EvalObjList(Jim_Interp *interp, Jim_Obj *listPtr, const char *filename, int linenr) { if (!Jim_IsList(listPtr)) { return Jim_EvalObj(interp, listPtr); } else { int retcode = JIM_OK; if (listPtr->internalRep.listValue.len) { Jim_IncrRefCount(listPtr); retcode = JimEvalObjVector(interp, listPtr->internalRep.listValue.len, listPtr->internalRep.listValue.ele, filename, linenr); Jim_DecrRefCount(interp, listPtr); } return retcode; } } int Jim_EvalObj(Jim_Interp *interp, Jim_Obj *scriptObjPtr) { int i; ScriptObj *script; ScriptToken *token; int retcode = JIM_OK; Jim_Obj *sargv[JIM_EVAL_SARGV_LEN], **argv = NULL; int linenr = 0; interp->errorFlag = 0; /* If the object is of type "list", we can call * a specialized version of Jim_EvalObj() */ if (Jim_IsList(scriptObjPtr)) { return Jim_EvalObjList(interp, scriptObjPtr, NULL, 0); } Jim_IncrRefCount(scriptObjPtr); /* Make sure it's shared. */ script = Jim_GetScript(interp, scriptObjPtr); /* Reset the interpreter result. This is useful to * return the empty result in the case of empty program. */ Jim_SetEmptyResult(interp); #ifdef JIM_OPTIMIZATION /* Check for one of the following common scripts used by for, while * * {} * incr a */ if (script->len == 0) { Jim_DecrRefCount(interp, scriptObjPtr); return JIM_OK; } if (script->len == 3 && script->token[1].objPtr->typePtr == &commandObjType && script->token[1].objPtr->internalRep.cmdValue.cmdPtr->cmdProc == Jim_IncrCoreCommand && script->token[2].objPtr->typePtr == &variableObjType) { Jim_Obj *objPtr = Jim_GetVariable(interp, script->token[2].objPtr, JIM_NONE); if (objPtr && !Jim_IsShared(objPtr) && objPtr->typePtr == &intObjType) { objPtr->internalRep.wideValue++; Jim_InvalidateStringRep(objPtr); Jim_DecrRefCount(interp, scriptObjPtr); Jim_SetResult(interp, objPtr); return JIM_OK; } } #endif /* Now we have to make sure the internal repr will not be * freed on shimmering. * * Think for example to this: * * set x {llength $x; ... some more code ...}; eval $x * * In order to preserve the internal rep, we increment the * inUse field of the script internal rep structure. */ script->inUse++; token = script->token; argv = sargv; /* Execute every command sequentially until the end of the script * or an error occurs. */ for (i = 0; i < script->len && retcode == JIM_OK; ) { int argc; int j; Jim_Cmd *cmd; /* First token of the line is always JIM_TT_LINE */ argc = token[i].objPtr->internalRep.scriptLineValue.argc; linenr = token[i].objPtr->internalRep.scriptLineValue.line; /* Allocate the arguments vector if required */ if (argc > JIM_EVAL_SARGV_LEN) argv = Jim_Alloc(sizeof(Jim_Obj *) * argc); /* Skip the JIM_TT_LINE token */ i++; /* Populate the arguments objects. * If an error occurs, retcode will be set and * 'j' will be set to the number of args expanded */ for (j = 0; j < argc; j++) { long wordtokens = 1; int expand = 0; Jim_Obj *wordObjPtr = NULL; if (token[i].type == JIM_TT_WORD) { wordtokens = JimWideValue(token[i++].objPtr); if (wordtokens < 0) { expand = 1; wordtokens = -wordtokens; } } if (wordtokens == 1) { /* Fast path if the token does not * need interpolation */ switch (token[i].type) { case JIM_TT_ESC: case JIM_TT_STR: wordObjPtr = token[i].objPtr; break; case JIM_TT_VAR: wordObjPtr = Jim_GetVariable(interp, token[i].objPtr, JIM_ERRMSG); break; case JIM_TT_DICTSUGAR: wordObjPtr = JimExpandDictSugar(interp, token[i].objPtr); break; case JIM_TT_CMD: retcode = Jim_EvalObj(interp, token[i].objPtr); if (retcode == JIM_OK) { wordObjPtr = Jim_GetResult(interp); } break; default: Jim_Panic(interp, "default token type reached " "in Jim_EvalObj()."); exit(1); } } else { /* For interpolation we call a helper * function to do the work for us. */ retcode = Jim_InterpolateTokens(interp, token + i, wordtokens, &wordObjPtr); } if (!wordObjPtr) { if (retcode == JIM_OK) { retcode = JIM_ERR; } break; } Jim_IncrRefCount(wordObjPtr); i += wordtokens; if (!expand) { argv[j] = wordObjPtr; } else { /* Need to expand wordObjPtr into multiple args from argv[j] ... */ int len = Jim_ListLength(interp, wordObjPtr); int newargc = argc + len - 1; int k; if (len > 1) { if (argv == sargv) { if (newargc > JIM_EVAL_SARGV_LEN) { argv = Jim_Alloc(sizeof(*argv) * newargc); memcpy(argv, sargv, sizeof(*argv) * j); } } else { /* Need to realloc to make room for (len - 1) more entries */ argv = Jim_Realloc(argv, sizeof(*argv) * newargc); } } /* Now copy in the expanded version */ for (k = 0; k < len; k++) { argv[j++] = wordObjPtr->internalRep.listValue.ele[k]; Jim_IncrRefCount(wordObjPtr->internalRep.listValue.ele[k]); } /* The original object reference is no longer needed, * after the expansion it is no longer present on * the argument vector, but the single elements are * in its place. */ Jim_DecrRefCount(interp, wordObjPtr); /* And update the indexes */ j--; argc += len - 1; } } if (retcode == JIM_OK && argc) { /* Lookup the command to call */ cmd = Jim_GetCommand(interp, argv[0], JIM_ERRMSG); if (cmd != NULL) { /* Call it -- Make sure result is an empty object. */ JimIncrCmdRefCount(cmd); Jim_SetEmptyResult(interp); if (cmd->cmdProc) { interp->cmdPrivData = cmd->privData; retcode = cmd->cmdProc(interp, argc, argv); } else { retcode = JimCallProcedure(interp, cmd, script->fileName, linenr, argc, argv); } JimDecrCmdRefCount(interp, cmd); } else { /* Call [unknown] */ retcode = JimUnknown(interp, argc, argv, script->fileName, linenr); } if (interp->signal_level && interp->sigmask) { /* Check for a signal after each command */ retcode = JIM_SIGNAL; } } /* Finished with the command, so decrement ref counts of each argument */ while (j-- > 0) { Jim_DecrRefCount(interp, argv[j]); } if (argv != sargv) { Jim_Free(argv); argv = sargv; } } /* Possibly add to the error stack trace */ JimAddErrorToStack(interp, retcode, script->fileName, linenr); /* Note that we don't have to decrement inUse, because the * following code transfers our use of the reference again to * the script object. */ Jim_FreeIntRep(interp, scriptObjPtr); scriptObjPtr->typePtr = &scriptObjType; Jim_SetIntRepPtr(scriptObjPtr, script); Jim_DecrRefCount(interp, scriptObjPtr); return retcode; } static int JimSetProcArg(Jim_Interp *interp, Jim_Obj *argNameObj, Jim_Obj *argValObj) { int retcode; /* If argObjPtr begins with '&', do an automatic upvar */ const char *varname = Jim_GetString(argNameObj, NULL); if (*varname == '&') { /* First check that the target variable exists */ Jim_Obj *objPtr; Jim_CallFrame *savedCallFrame = interp->framePtr; interp->framePtr = interp->framePtr->parentCallFrame; objPtr = Jim_GetVariable(interp, argValObj, JIM_ERRMSG); interp->framePtr = savedCallFrame; if (!objPtr) { return JIM_ERR; } /* It exists, so perform the binding. */ objPtr = Jim_NewStringObj(interp, varname + 1, -1); Jim_IncrRefCount(objPtr); retcode = Jim_SetVariableLink(interp, objPtr, argValObj, interp->framePtr->parentCallFrame); Jim_DecrRefCount(interp, objPtr); } else { retcode = Jim_SetVariable(interp, argNameObj, argValObj); } return retcode; } /* Call a procedure implemented in Tcl. * It's possible to speed-up a lot this function, currently * the callframes are not cached, but allocated and * destroied every time. What is expecially costly is * to create/destroy the local vars hash table every time. * * This can be fixed just implementing callframes caching * in JimCreateCallFrame() and JimFreeCallFrame(). */ int JimCallProcedure(Jim_Interp *interp, Jim_Cmd *cmd, const char *filename, int linenr, int argc, Jim_Obj *const *argv) { int i, d, retcode; Jim_CallFrame *callFramePtr; Jim_Obj *argObjPtr; Jim_Obj *procname = argv[0]; Jim_Stack *prevLocalProcs; /* Check arity */ if (argc - 1 < cmd->leftArity + cmd->rightArity || (!cmd->args && argc - 1 > cmd->leftArity + cmd->rightArity + cmd->optionalArgs)) { /* Create a nice error message, consistent with Tcl 8.5 */ Jim_Obj *argmsg = Jim_NewStringObj(interp, "", 0); int arglen = Jim_ListLength(interp, cmd->argListObjPtr); for (i = 0; i < arglen; i++) { Jim_Obj *objPtr; Jim_ListIndex(interp, cmd->argListObjPtr, i, &argObjPtr, JIM_NONE); Jim_AppendString(interp, argmsg, " ", 1); if (i < cmd->leftArity || i >= arglen - cmd->rightArity) { Jim_AppendObj(interp, argmsg, argObjPtr); } else if (i == arglen - cmd->rightArity - cmd->args) { if (Jim_ListLength(interp, argObjPtr) == 1) { /* We have plain args */ Jim_AppendString(interp, argmsg, "?argument ...?", -1); } else { Jim_AppendString(interp, argmsg, "?", 1); Jim_ListIndex(interp, argObjPtr, 1, &objPtr, JIM_NONE); Jim_AppendObj(interp, argmsg, objPtr); Jim_AppendString(interp, argmsg, " ...?", -1); } } else { Jim_AppendString(interp, argmsg, "?", 1); Jim_ListIndex(interp, argObjPtr, 0, &objPtr, JIM_NONE); Jim_AppendObj(interp, argmsg, objPtr); Jim_AppendString(interp, argmsg, "?", 1); } } Jim_SetResultFormatted(interp, "wrong # args: should be \"%#s%#s\"", procname, argmsg); Jim_FreeNewObj(interp, argmsg); return JIM_ERR; } /* Check if there are too nested calls */ if (interp->framePtr->level == interp->maxNestingDepth) { Jim_SetResultString(interp, "Too many nested calls. Infinite recursion?", -1); return JIM_ERR; } /* Create a new callframe */ callFramePtr = JimCreateCallFrame(interp, interp->framePtr); callFramePtr->argv = argv; callFramePtr->argc = argc; callFramePtr->procArgsObjPtr = cmd->argListObjPtr; callFramePtr->procBodyObjPtr = cmd->bodyObjPtr; callFramePtr->staticVars = cmd->staticVars; callFramePtr->filename = filename; callFramePtr->line = linenr; Jim_IncrRefCount(cmd->argListObjPtr); Jim_IncrRefCount(cmd->bodyObjPtr); interp->framePtr = callFramePtr; /* Simplify arg counting */ argv++; argc--; /* Set arguments */ /* Assign in this order: * leftArity required args. * rightArity required args (but actually do it last for simplicity) * optionalArgs optional args * remaining args into 'args' if 'args' */ /* Note that 'd' steps along the arg list, whilst argc/argv follow the supplied args */ /* leftArity required args */ for (d = 0; d < cmd->leftArity; d++) { Jim_ListIndex(interp, cmd->argListObjPtr, d, &argObjPtr, JIM_NONE); retcode = JimSetProcArg(interp, argObjPtr, *argv++); if (retcode != JIM_OK) { goto badargset; } argc--; } /* Shorten our idea of the number of supplied args */ argc -= cmd->rightArity; /* optionalArgs optional args */ for (i = 0; i < cmd->optionalArgs; i++) { Jim_Obj *nameObjPtr; Jim_Obj *valueObjPtr; Jim_ListIndex(interp, cmd->argListObjPtr, d++, &argObjPtr, JIM_NONE); /* The name is the first element of the list */ Jim_ListIndex(interp, argObjPtr, 0, &nameObjPtr, JIM_NONE); if (argc) { valueObjPtr = *argv++; argc--; } else { /* No more values, so use default */ /* The value is the second element of the list */ Jim_ListIndex(interp, argObjPtr, 1, &valueObjPtr, JIM_NONE); } Jim_SetVariable(interp, nameObjPtr, valueObjPtr); } /* Any remaining args go to 'args' */ if (cmd->args) { Jim_Obj *listObjPtr = Jim_NewListObj(interp, argv, argc); /* Get the 'args' name from the procedure args */ Jim_ListIndex(interp, cmd->argListObjPtr, d, &argObjPtr, JIM_NONE); /* It is possible to rename args. */ i = Jim_ListLength(interp, argObjPtr); if (i == 2) { Jim_ListIndex(interp, argObjPtr, 1, &argObjPtr, JIM_NONE); } Jim_SetVariable(interp, argObjPtr, listObjPtr); argv += argc; d++; } /* rightArity required args */ for (i = 0; i < cmd->rightArity; i++) { Jim_ListIndex(interp, cmd->argListObjPtr, d++, &argObjPtr, JIM_NONE); retcode = JimSetProcArg(interp, argObjPtr, *argv++); if (retcode != JIM_OK) { goto badargset; } } /* Install a new stack for local procs */ prevLocalProcs = interp->localProcs; interp->localProcs = NULL; /* Eval the body */ retcode = Jim_EvalObj(interp, cmd->bodyObjPtr); /* Delete any local procs */ JimDeleteLocalProcs(interp); interp->localProcs = prevLocalProcs; badargset: /* Destroy the callframe */ interp->framePtr = interp->framePtr->parentCallFrame; if (callFramePtr->vars.size != JIM_HT_INITIAL_SIZE) { JimFreeCallFrame(interp, callFramePtr, JIM_FCF_NONE); } else { JimFreeCallFrame(interp, callFramePtr, JIM_FCF_NOHT); } /* Handle the JIM_EVAL return code */ while (retcode == JIM_EVAL) { Jim_Obj *resultScriptObjPtr = Jim_GetResult(interp); Jim_IncrRefCount(resultScriptObjPtr); /* Should be a list! */ retcode = Jim_EvalObjList(interp, resultScriptObjPtr, filename, linenr); Jim_DecrRefCount(interp, resultScriptObjPtr); } /* Handle the JIM_RETURN return code */ if (retcode == JIM_RETURN) { if (--interp->returnLevel <= 0) { retcode = interp->returnCode; interp->returnCode = JIM_OK; interp->returnLevel = 0; } } else if (retcode == JIM_ERR) { interp->addStackTrace++; Jim_DecrRefCount(interp, interp->errorProc); interp->errorProc = procname; Jim_IncrRefCount(interp->errorProc); } return retcode; } int Jim_Eval_Named(Jim_Interp *interp, const char *script, const char *filename, int lineno) { int retval; Jim_Obj *scriptObjPtr; scriptObjPtr = Jim_NewStringObj(interp, script, -1); Jim_IncrRefCount(scriptObjPtr); if (filename) { Jim_Obj *prevScriptObj; JimSetSourceInfo(interp, scriptObjPtr, filename, lineno); prevScriptObj = interp->currentScriptObj; interp->currentScriptObj = scriptObjPtr; retval = Jim_EvalObj(interp, scriptObjPtr); interp->currentScriptObj = prevScriptObj; } else { retval = Jim_EvalObj(interp, scriptObjPtr); } Jim_DecrRefCount(interp, scriptObjPtr); return retval; } int Jim_Eval(Jim_Interp *interp, const char *script) { return Jim_Eval_Named(interp, script, NULL, 0); } /* Execute script in the scope of the global level */ int Jim_EvalGlobal(Jim_Interp *interp, const char *script) { int retval; Jim_CallFrame *savedFramePtr = interp->framePtr; interp->framePtr = interp->topFramePtr; retval = Jim_Eval(interp, script); interp->framePtr = savedFramePtr; return retval; } int Jim_EvalFileGlobal(Jim_Interp *interp, const char *filename) { int retval; Jim_CallFrame *savedFramePtr = interp->framePtr; interp->framePtr = interp->topFramePtr; retval = Jim_EvalFile(interp, filename); interp->framePtr = savedFramePtr; return retval; } #include int Jim_EvalFile(Jim_Interp *interp, const char *filename) { FILE *fp; char *buf; Jim_Obj *scriptObjPtr; Jim_Obj *prevScriptObj; Jim_Stack *prevLocalProcs; struct stat sb; int retcode; int readlen; char missing; if (stat(filename, &sb) != 0 || (fp = fopen(filename, "rt")) == NULL) { Jim_SetResultFormatted(interp, "couldn't read file \"%s\": %s", filename, strerror(errno)); return JIM_ERR; } if (sb.st_size == 0) { fclose(fp); return JIM_OK; } buf = Jim_Alloc(sb.st_size + 1); readlen = fread(buf, 1, sb.st_size, fp); if (ferror(fp)) { fclose(fp); Jim_Free(buf); Jim_SetResultFormatted(interp, "failed to load file \"%s\": %s", filename, strerror(errno)); return JIM_ERR; } fclose(fp); buf[readlen] = 0; if (!Jim_ScriptIsComplete(buf, sb.st_size, &missing)) { Jim_SetResultFormatted(interp, "missing %s in \"%s\"", missing == '{' ? "close-brace" : "\"", filename); Jim_Free(buf); return JIM_ERR; } scriptObjPtr = Jim_NewStringObjNoAlloc(interp, buf, readlen); JimSetSourceInfo(interp, scriptObjPtr, filename, 1); Jim_IncrRefCount(scriptObjPtr); prevScriptObj = interp->currentScriptObj; interp->currentScriptObj = scriptObjPtr; /* Install a new stack for local procs */ prevLocalProcs = interp->localProcs; interp->localProcs = NULL; retcode = Jim_EvalObj(interp, scriptObjPtr); /* Delete any local procs */ JimDeleteLocalProcs(interp); interp->localProcs = prevLocalProcs; /* Handle the JIM_RETURN return code */ if (retcode == JIM_RETURN) { if (--interp->returnLevel <= 0) { retcode = interp->returnCode; interp->returnCode = JIM_OK; interp->returnLevel = 0; } } if (retcode == JIM_ERR) { /* EvalFile changes context, so add a stack frame here */ interp->addStackTrace++; } interp->currentScriptObj = prevScriptObj; Jim_DecrRefCount(interp, scriptObjPtr); return retcode; } /* ----------------------------------------------------------------------------- * Subst * ---------------------------------------------------------------------------*/ static int JimParseSubstStr(struct JimParserCtx *pc) { pc->tstart = pc->p; pc->tline = pc->linenr; while (*pc->p && *pc->p != '$' && *pc->p != '[') { if (*pc->p == '\\' && pc->len > 1) { pc->p++; pc->len--; } pc->p++; pc->len--; } pc->tend = pc->p - 1; pc->tt = JIM_TT_ESC; return JIM_OK; } static int JimParseSubst(struct JimParserCtx *pc, int flags) { int retval; if (pc->len == 0) { pc->tstart = pc->tend = pc->p; pc->tline = pc->linenr; pc->tt = JIM_TT_EOL; pc->eof = 1; return JIM_OK; } switch (*pc->p) { case '[': retval = JimParseCmd(pc); if (flags & JIM_SUBST_NOCMD) { pc->tstart--; pc->tend++; pc->tt = (flags & JIM_SUBST_NOESC) ? JIM_TT_STR : JIM_TT_ESC; } return retval; break; case '$': if (JimParseVar(pc) == JIM_ERR) { pc->tstart = pc->tend = pc->p++; pc->len--; pc->tline = pc->linenr; pc->tt = JIM_TT_STR; } else { if (flags & JIM_SUBST_NOVAR) { pc->tstart--; if (flags & JIM_SUBST_NOESC) pc->tt = JIM_TT_STR; else pc->tt = JIM_TT_ESC; if (*pc->tstart == '{') { pc->tstart--; if (*(pc->tend + 1)) pc->tend++; } } } break; default: retval = JimParseSubstStr(pc); if (flags & JIM_SUBST_NOESC) pc->tt = JIM_TT_STR; return retval; break; } return JIM_OK; } /* The subst object type reuses most of the data structures and functions * of the script object. Script's data structures are a bit more complex * for what is needed for [subst]itution tasks, but the reuse helps to * deal with a single data structure at the cost of some more memory * usage for substitutions. */ static const Jim_ObjType substObjType = { "subst", FreeScriptInternalRep, DupScriptInternalRep, NULL, JIM_TYPE_REFERENCES, }; /* This method takes the string representation of an object * as a Tcl string where to perform [subst]itution, and generates * the pre-parsed internal representation. */ static int SetSubstFromAny(Jim_Interp *interp, struct Jim_Obj *objPtr, int flags) { int scriptTextLen; const char *scriptText = Jim_GetString(objPtr, &scriptTextLen); struct JimParserCtx parser; struct ScriptObj *script = Jim_Alloc(sizeof(*script)); ParseTokenList tokenlist; /* Initially parse the subst into tokens (in tokenlist) */ ScriptTokenListInit(&tokenlist); JimParserInit(&parser, scriptText, scriptTextLen, 1); while (1) { JimParseSubst(&parser, flags); if (JimParserEof(&parser)) { /* Note that subst doesn't need the EOL token */ break; } ScriptAddToken(&tokenlist, parser.tstart, parser.tend - parser.tstart + 1, parser.tt, parser.tline); } /* Create the "real" subst/script tokens from the initial token list */ script->inUse = 1; script->substFlags = flags; script->fileName = NULL; SubstObjAddTokens(interp, script, &tokenlist); /* No longer need the token list */ ScriptTokenListFree(&tokenlist); #ifdef DEBUG_SHOW_SUBST { int i; printf("==== Subst ====\n"); for (i = 0; i < script->len; i++) { printf("[%2d] %s '%s'\n", i, tt_name(script->token[i].type), Jim_GetString(script->token[i].objPtr, NULL)); } } #endif /* Free the old internal rep and set the new one. */ Jim_FreeIntRep(interp, objPtr); Jim_SetIntRepPtr(objPtr, script); objPtr->typePtr = &scriptObjType; return JIM_OK; } ScriptObj *Jim_GetSubst(Jim_Interp *interp, Jim_Obj *objPtr, int flags) { struct ScriptObj *script = Jim_GetIntRepPtr(objPtr); if (objPtr->typePtr != &substObjType || script->substFlags != flags) SetSubstFromAny(interp, objPtr, flags); return (ScriptObj *) Jim_GetIntRepPtr(objPtr); } /* Performs commands,variables,blackslashes substitution, * storing the result object (with refcount 0) into * resObjPtrPtr. */ int Jim_SubstObj(Jim_Interp *interp, Jim_Obj *substObjPtr, Jim_Obj **resObjPtrPtr, int flags) { ScriptObj *script; ScriptToken *token; int i, len, retcode = JIM_OK; int rc; Jim_Obj *resObjPtr, *savedResultObjPtr; script = Jim_GetSubst(interp, substObjPtr, flags); #ifdef JIM_OPTIMIZATION /* Fast path for a very common case with array-alike syntax, * that's: $foo($bar) */ if (script->len == 1 && script->token[0].type == JIM_TT_VAR) { Jim_Obj *varObjPtr = script->token[0].objPtr; Jim_IncrRefCount(varObjPtr); resObjPtr = Jim_GetVariable(interp, varObjPtr, JIM_ERRMSG); if (resObjPtr == NULL) { Jim_DecrRefCount(interp, varObjPtr); return JIM_ERR; } Jim_DecrRefCount(interp, varObjPtr); *resObjPtrPtr = resObjPtr; return JIM_OK; } #endif Jim_IncrRefCount(substObjPtr); /* Make sure it's shared. */ /* In order to preserve the internal rep, we increment the * inUse field of the script internal rep structure. */ script->inUse++; token = script->token; len = script->len; /* Save the interp old result, to set it again before * to return. */ savedResultObjPtr = interp->result; Jim_IncrRefCount(savedResultObjPtr); /* Perform the substitution. Starts with an empty object * and adds every token (performing the appropriate * var/command/escape substitution). */ resObjPtr = Jim_NewStringObj(interp, "", 0); for (i = 0; i < len; i++) { Jim_Obj *objPtr; switch (token[i].type) { case JIM_TT_STR: case JIM_TT_ESC: Jim_AppendObj(interp, resObjPtr, token[i].objPtr); break; case JIM_TT_VAR: case JIM_TT_DICTSUGAR: if (token[i].type == JIM_TT_VAR) { objPtr = Jim_GetVariable(interp, token[i].objPtr, JIM_ERRMSG); } else { objPtr = JimExpandDictSugar(interp, token[i].objPtr); } if (objPtr == NULL) goto err; Jim_IncrRefCount(objPtr); Jim_AppendObj(interp, resObjPtr, objPtr); Jim_DecrRefCount(interp, objPtr); break; case JIM_TT_CMD: rc = Jim_EvalObj(interp, token[i].objPtr); if (rc == JIM_BREAK) { /* Stop substituting */ goto ok; } else if (rc == JIM_CONTINUE) { /* just skip this one */ } else if (rc == JIM_OK || rc == JIM_RETURN) { Jim_AppendObj(interp, resObjPtr, interp->result); } else { goto err; } break; default: Jim_Panic(interp, "default token type (%d) reached " "in Jim_SubstObj().", token[i].type); break; } } ok: if (retcode == JIM_OK) Jim_SetResult(interp, savedResultObjPtr); Jim_DecrRefCount(interp, savedResultObjPtr); /* Note that we don't have to decrement inUse, because the * following code transfers our use of the reference again to * the script object. */ Jim_FreeIntRep(interp, substObjPtr); substObjPtr->typePtr = &scriptObjType; Jim_SetIntRepPtr(substObjPtr, script); Jim_DecrRefCount(interp, substObjPtr); *resObjPtrPtr = resObjPtr; return retcode; err: Jim_FreeNewObj(interp, resObjPtr); retcode = JIM_ERR; goto ok; } /* ----------------------------------------------------------------------------- * Core commands utility functions * ---------------------------------------------------------------------------*/ void Jim_WrongNumArgs(Jim_Interp *interp, int argc, Jim_Obj *const *argv, const char *msg) { int i; Jim_Obj *objPtr = Jim_NewEmptyStringObj(interp); Jim_AppendString(interp, objPtr, "wrong # args: should be \"", -1); for (i = 0; i < argc; i++) { Jim_AppendObj(interp, objPtr, argv[i]); if (!(i + 1 == argc && msg[0] == '\0')) Jim_AppendString(interp, objPtr, " ", 1); } Jim_AppendString(interp, objPtr, msg, -1); Jim_AppendString(interp, objPtr, "\"", 1); Jim_SetResult(interp, objPtr); } #define JimTrivialMatch(pattern) (strpbrk((pattern), "*[?\\") == NULL) /* type is: 0=commands, 1=procs, 2=channels */ static Jim_Obj *JimCommandsList(Jim_Interp *interp, Jim_Obj *patternObjPtr, int type) { Jim_HashTableIterator *htiter; Jim_HashEntry *he; Jim_Obj *listObjPtr = Jim_NewListObj(interp, NULL, 0); /* Check for the non-pattern case. We can do this much more efficiently. */ if (patternObjPtr && JimTrivialMatch(Jim_GetString(patternObjPtr, NULL))) { Jim_Cmd *cmdPtr = Jim_GetCommand(interp, patternObjPtr, JIM_NONE); if (cmdPtr) { if (type == 1 && cmdPtr->cmdProc) { /* not a proc */ } else if (type == 2 && !Jim_AioFilehandle(interp, patternObjPtr)) { /* not a channel */ } else { Jim_ListAppendElement(interp, listObjPtr, patternObjPtr); } } return listObjPtr; } htiter = Jim_GetHashTableIterator(&interp->commands); while ((he = Jim_NextHashEntry(htiter)) != NULL) { Jim_Cmd *cmdPtr = he->val; Jim_Obj *cmdNameObj; if (type == 1 && cmdPtr->cmdProc) { /* not a proc */ continue; } if (patternObjPtr && !JimStringMatch(interp, patternObjPtr, he->key, 0)) continue; cmdNameObj = Jim_NewStringObj(interp, he->key, -1); /* Is it a channel? */ if (type == 2 && !Jim_AioFilehandle(interp, cmdNameObj)) { Jim_FreeNewObj(interp, cmdNameObj); continue; } Jim_ListAppendElement(interp, listObjPtr, cmdNameObj); } Jim_FreeHashTableIterator(htiter); return listObjPtr; } /* Keep this in order */ #define JIM_VARLIST_GLOBALS 0 #define JIM_VARLIST_LOCALS 1 #define JIM_VARLIST_VARS 2 static Jim_Obj *JimVariablesList(Jim_Interp *interp, Jim_Obj *patternObjPtr, int mode) { Jim_HashTableIterator *htiter; Jim_HashEntry *he; Jim_Obj *listObjPtr = Jim_NewListObj(interp, NULL, 0); if (mode == JIM_VARLIST_GLOBALS) { htiter = Jim_GetHashTableIterator(&interp->topFramePtr->vars); } else { /* For [info locals], if we are at top level an emtpy list * is returned. I don't agree, but we aim at compatibility (SS) */ if (mode == JIM_VARLIST_LOCALS && interp->framePtr == interp->topFramePtr) return listObjPtr; htiter = Jim_GetHashTableIterator(&interp->framePtr->vars); } while ((he = Jim_NextHashEntry(htiter)) != NULL) { Jim_Var *varPtr = (Jim_Var *)he->val; if (mode == JIM_VARLIST_LOCALS) { if (varPtr->linkFramePtr != NULL) continue; } if (patternObjPtr && !JimStringMatch(interp, patternObjPtr, he->key, 0)) continue; Jim_ListAppendElement(interp, listObjPtr, Jim_NewStringObj(interp, he->key, -1)); } Jim_FreeHashTableIterator(htiter); return listObjPtr; } static int JimInfoLevel(Jim_Interp *interp, Jim_Obj *levelObjPtr, Jim_Obj **objPtrPtr, int info_level_cmd) { Jim_CallFrame *targetCallFrame; targetCallFrame = JimGetCallFrameByInteger(interp, levelObjPtr); if (targetCallFrame == NULL) { return JIM_ERR; } /* No proc call at toplevel callframe */ if (targetCallFrame == interp->topFramePtr) { Jim_SetResultFormatted(interp, "bad level \"%#s\"", levelObjPtr); return JIM_ERR; } if (info_level_cmd) { *objPtrPtr = Jim_NewListObj(interp, targetCallFrame->argv, targetCallFrame->argc); } else { Jim_Obj *listObj = Jim_NewListObj(interp, NULL, 0); Jim_ListAppendElement(interp, listObj, targetCallFrame->argv[0]); Jim_ListAppendElement(interp, listObj, Jim_NewStringObj(interp, targetCallFrame->filename ? targetCallFrame->filename : "", -1)); Jim_ListAppendElement(interp, listObj, Jim_NewIntObj(interp, targetCallFrame->line)); *objPtrPtr = listObj; } return JIM_OK; } /* ----------------------------------------------------------------------------- * Core commands * ---------------------------------------------------------------------------*/ /* fake [puts] -- not the real puts, just for debugging. */ static int Jim_PutsCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { if (argc != 2 && argc != 3) { Jim_WrongNumArgs(interp, 1, argv, "?-nonewline? string"); return JIM_ERR; } if (argc == 3) { if (!Jim_CompareStringImmediate(interp, argv[1], "-nonewline")) { Jim_SetResultString(interp, "The second argument must " "be -nonewline", -1); return JIM_ERR; } else { fputs(Jim_GetString(argv[2], NULL), stdout); } } else { puts(Jim_GetString(argv[1], NULL)); } return JIM_OK; } /* Helper for [+] and [*] */ static int JimAddMulHelper(Jim_Interp *interp, int argc, Jim_Obj *const *argv, int op) { jim_wide wideValue, res; double doubleValue, doubleRes; int i; res = (op == JIM_EXPROP_ADD) ? 0 : 1; for (i = 1; i < argc; i++) { if (Jim_GetWide(interp, argv[i], &wideValue) != JIM_OK) goto trydouble; if (op == JIM_EXPROP_ADD) res += wideValue; else res *= wideValue; } Jim_SetResultInt(interp, res); return JIM_OK; trydouble: doubleRes = (double)res; for (; i < argc; i++) { if (Jim_GetDouble(interp, argv[i], &doubleValue) != JIM_OK) return JIM_ERR; if (op == JIM_EXPROP_ADD) doubleRes += doubleValue; else doubleRes *= doubleValue; } Jim_SetResult(interp, Jim_NewDoubleObj(interp, doubleRes)); return JIM_OK; } /* Helper for [-] and [/] */ static int JimSubDivHelper(Jim_Interp *interp, int argc, Jim_Obj *const *argv, int op) { jim_wide wideValue, res = 0; double doubleValue, doubleRes = 0; int i = 2; if (argc < 2) { Jim_WrongNumArgs(interp, 1, argv, "number ?number ... number?"); return JIM_ERR; } else if (argc == 2) { /* The arity = 2 case is different. For [- x] returns -x, * while [/ x] returns 1/x. */ if (Jim_GetWide(interp, argv[1], &wideValue) != JIM_OK) { if (Jim_GetDouble(interp, argv[1], &doubleValue) != JIM_OK) { return JIM_ERR; } else { if (op == JIM_EXPROP_SUB) doubleRes = -doubleValue; else doubleRes = 1.0 / doubleValue; Jim_SetResult(interp, Jim_NewDoubleObj(interp, doubleRes)); return JIM_OK; } } if (op == JIM_EXPROP_SUB) { res = -wideValue; Jim_SetResultInt(interp, res); } else { doubleRes = 1.0 / wideValue; Jim_SetResult(interp, Jim_NewDoubleObj(interp, doubleRes)); } return JIM_OK; } else { if (Jim_GetWide(interp, argv[1], &res) != JIM_OK) { if (Jim_GetDouble(interp, argv[1], &doubleRes) != JIM_OK) { return JIM_ERR; } else { goto trydouble; } } } for (i = 2; i < argc; i++) { if (Jim_GetWide(interp, argv[i], &wideValue) != JIM_OK) { doubleRes = (double)res; goto trydouble; } if (op == JIM_EXPROP_SUB) res -= wideValue; else res /= wideValue; } Jim_SetResultInt(interp, res); return JIM_OK; trydouble: for (; i < argc; i++) { if (Jim_GetDouble(interp, argv[i], &doubleValue) != JIM_OK) return JIM_ERR; if (op == JIM_EXPROP_SUB) doubleRes -= doubleValue; else doubleRes /= doubleValue; } Jim_SetResult(interp, Jim_NewDoubleObj(interp, doubleRes)); return JIM_OK; } /* [+] */ static int Jim_AddCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { return JimAddMulHelper(interp, argc, argv, JIM_EXPROP_ADD); } /* [*] */ static int Jim_MulCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { return JimAddMulHelper(interp, argc, argv, JIM_EXPROP_MUL); } /* [-] */ static int Jim_SubCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { return JimSubDivHelper(interp, argc, argv, JIM_EXPROP_SUB); } /* [/] */ static int Jim_DivCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { return JimSubDivHelper(interp, argc, argv, JIM_EXPROP_DIV); } /* [set] */ static int Jim_SetCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { if (argc != 2 && argc != 3) { Jim_WrongNumArgs(interp, 1, argv, "varName ?newValue?"); return JIM_ERR; } if (argc == 2) { Jim_Obj *objPtr; objPtr = Jim_GetVariable(interp, argv[1], JIM_ERRMSG); if (!objPtr) return JIM_ERR; Jim_SetResult(interp, objPtr); return JIM_OK; } /* argc == 3 case. */ if (Jim_SetVariable(interp, argv[1], argv[2]) != JIM_OK) return JIM_ERR; Jim_SetResult(interp, argv[2]); return JIM_OK; } /* [unset] * * unset ?-nocomplain? ?--? ?varName ...? */ static int Jim_UnsetCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { int i = 1; int complain = 1; while (i < argc) { if (Jim_CompareStringImmediate(interp, argv[i], "--")) { i++; break; } if (Jim_CompareStringImmediate(interp, argv[i], "-nocomplain")) { complain = 0; i++; continue; } break; } while (i < argc) { if (Jim_UnsetVariable(interp, argv[i], complain ? JIM_ERRMSG : JIM_NONE) != JIM_OK && complain) { return JIM_ERR; } i++; } return JIM_OK; } /* [while] */ static int Jim_WhileCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { if (argc != 3) { Jim_WrongNumArgs(interp, 1, argv, "condition body"); return JIM_ERR; } /* The general purpose implementation of while starts here */ while (1) { int boolean, retval; if ((retval = Jim_GetBoolFromExpr(interp, argv[1], &boolean)) != JIM_OK) return retval; if (!boolean) break; if ((retval = Jim_EvalObj(interp, argv[2])) != JIM_OK) { switch (retval) { case JIM_BREAK: goto out; break; case JIM_CONTINUE: continue; break; default: return retval; } } } out: Jim_SetEmptyResult(interp); return JIM_OK; } /* [for] */ static int Jim_ForCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { int retval; int boolean = 1; Jim_Obj *varNamePtr = NULL; Jim_Obj *stopVarNamePtr = NULL; if (argc != 5) { Jim_WrongNumArgs(interp, 1, argv, "start test next body"); return JIM_ERR; } /* Do the initialisation */ if ((retval = Jim_EvalObj(interp, argv[1])) != JIM_OK) { return retval; } /* And do the first test now. Better for optimisation * if we can do next/test at the bottom of the loop */ retval = Jim_GetBoolFromExpr(interp, argv[2], &boolean); /* Ready to do the body as follows: * while (1) { * body // check retcode * next // check retcode * test // check retcode/test bool * } */ #ifdef JIM_OPTIMIZATION /* Check if the for is on the form: * for ... {$i < CONST} {incr i} * for ... {$i < $j} {incr i} */ if (retval == JIM_OK && boolean) { ScriptObj *incrScript; ExprByteCode *expr; jim_wide stop, currentVal; unsigned jim_wide procEpoch; Jim_Obj *objPtr; int cmpOffset; /* Do it only if there aren't shared arguments */ expr = JimGetExpression(interp, argv[2]); incrScript = Jim_GetScript(interp, argv[3]); /* Ensure proper lengths to start */ if (incrScript->len != 3 || !expr || expr->len != 3) { goto evalstart; } /* Ensure proper token types. */ if (incrScript->token[1].type != JIM_TT_ESC || expr->token[0].type != JIM_TT_VAR || (expr->token[1].type != JIM_TT_EXPR_INT && expr->token[1].type != JIM_TT_VAR)) { goto evalstart; } if (expr->token[2].type == JIM_EXPROP_LT) { cmpOffset = 0; } else if (expr->token[2].type == JIM_EXPROP_LTE) { cmpOffset = 1; } else { goto evalstart; } /* Update command must be incr */ if (!Jim_CompareStringImmediate(interp, incrScript->token[1].objPtr, "incr")) { goto evalstart; } /* incr, expression must be about the same variable */ if (!Jim_StringEqObj(incrScript->token[2].objPtr, expr->token[0].objPtr)) { goto evalstart; } /* Get the stop condition (must be a variable or integer) */ if (expr->token[1].type == JIM_TT_EXPR_INT) { if (Jim_GetWide(interp, expr->token[1].objPtr, &stop) == JIM_ERR) { goto evalstart; } } else { stopVarNamePtr = expr->token[1].objPtr; Jim_IncrRefCount(stopVarNamePtr); /* Keep the compiler happy */ stop = 0; } /* Initialization */ procEpoch = interp->procEpoch; varNamePtr = expr->token[0].objPtr; Jim_IncrRefCount(varNamePtr); objPtr = Jim_GetVariable(interp, varNamePtr, JIM_NONE); if (objPtr == NULL || Jim_GetWide(interp, objPtr, ¤tVal) != JIM_OK) { goto testcond; } /* --- OPTIMIZED FOR --- */ while (retval == JIM_OK) { /* === Check condition === */ /* Note that currentVal is already set here */ /* Immediate or Variable? get the 'stop' value if the latter. */ if (stopVarNamePtr) { objPtr = Jim_GetVariable(interp, stopVarNamePtr, JIM_NONE); if (objPtr == NULL || Jim_GetWide(interp, objPtr, &stop) != JIM_OK) { goto testcond; } } if (currentVal >= stop + cmpOffset) { break; } /* Eval body */ retval = Jim_EvalObj(interp, argv[4]); if (retval == JIM_OK || retval == JIM_CONTINUE) { retval = JIM_OK; /* If there was a change in procedures/command continue * with the usual [for] command implementation */ if (procEpoch != interp->procEpoch) { goto evalnext; } objPtr = Jim_GetVariable(interp, varNamePtr, JIM_ERRMSG); /* Increment */ if (objPtr == NULL) { retval = JIM_ERR; goto out; } if (!Jim_IsShared(objPtr) && objPtr->typePtr == &intObjType) { currentVal = ++objPtr->internalRep.wideValue; Jim_InvalidateStringRep(objPtr); } else { if (Jim_GetWide(interp, objPtr, ¤tVal) != JIM_OK || Jim_SetVariable(interp, varNamePtr, Jim_NewIntObj(interp, ++currentVal)) != JIM_OK) { goto evalnext; } } } } goto out; } evalstart: #endif while (boolean && (retval == JIM_OK || retval == JIM_CONTINUE)) { /* Body */ retval = Jim_EvalObj(interp, argv[4]); if (retval == JIM_OK || retval == JIM_CONTINUE) { /* increment */ evalnext: retval = Jim_EvalObj(interp, argv[3]); if (retval == JIM_OK || retval == JIM_CONTINUE) { /* test */ testcond: retval = Jim_GetBoolFromExpr(interp, argv[2], &boolean); } } } out: if (stopVarNamePtr) { Jim_DecrRefCount(interp, stopVarNamePtr); } if (varNamePtr) { Jim_DecrRefCount(interp, varNamePtr); } if (retval == JIM_CONTINUE || retval == JIM_BREAK || retval == JIM_OK) { Jim_SetEmptyResult(interp); return JIM_OK; } return retval; } /* foreach + lmap implementation. */ static int JimForeachMapHelper(Jim_Interp *interp, int argc, Jim_Obj *const *argv, int doMap) { int result = JIM_ERR, i, nbrOfLists, *listsIdx, *listsEnd; int nbrOfLoops = 0; Jim_Obj *emptyStr, *script, *mapRes = NULL; if (argc < 4 || argc % 2 != 0) { Jim_WrongNumArgs(interp, 1, argv, "varList list ?varList list ...? script"); return JIM_ERR; } if (doMap) { mapRes = Jim_NewListObj(interp, NULL, 0); Jim_IncrRefCount(mapRes); } emptyStr = Jim_NewEmptyStringObj(interp); Jim_IncrRefCount(emptyStr); script = argv[argc - 1]; /* Last argument is a script */ nbrOfLists = (argc - 1 - 1) / 2; /* argc - 'foreach' - script */ listsIdx = (int *)Jim_Alloc(nbrOfLists * sizeof(int)); listsEnd = (int *)Jim_Alloc(nbrOfLists * 2 * sizeof(int)); /* Initialize iterators and remember max nbr elements each list */ memset(listsIdx, 0, nbrOfLists * sizeof(int)); /* Remember lengths of all lists and calculate how much rounds to loop */ for (i = 0; i < nbrOfLists * 2; i += 2) { div_t cnt; int count; listsEnd[i] = Jim_ListLength(interp, argv[i + 1]); listsEnd[i + 1] = Jim_ListLength(interp, argv[i + 2]); if (listsEnd[i] == 0) { Jim_SetResultString(interp, "foreach varlist is empty", -1); goto err; } cnt = div(listsEnd[i + 1], listsEnd[i]); count = cnt.quot + (cnt.rem ? 1 : 0); if (count > nbrOfLoops) nbrOfLoops = count; } for (; nbrOfLoops-- > 0;) { for (i = 0; i < nbrOfLists; ++i) { int varIdx = 0, var = i * 2; while (varIdx < listsEnd[var]) { Jim_Obj *varName, *ele; int lst = i * 2 + 1; if (Jim_ListIndex(interp, argv[var + 1], varIdx, &varName, JIM_ERRMSG) != JIM_OK) goto err; if (listsIdx[i] < listsEnd[lst]) { if (Jim_ListIndex(interp, argv[lst + 1], listsIdx[i], &ele, JIM_ERRMSG) != JIM_OK) goto err; /* Avoid shimmering */ Jim_IncrRefCount(ele); result = Jim_SetVariable(interp, varName, ele); Jim_DecrRefCount(interp, ele); if (result == JIM_OK) { ++listsIdx[i]; /* Remember next iterator of current list */ ++varIdx; /* Next variable */ continue; } } else if (Jim_SetVariable(interp, varName, emptyStr) == JIM_OK) { ++varIdx; /* Next variable */ continue; } goto err; } } switch (result = Jim_EvalObj(interp, script)) { case JIM_OK: if (doMap) Jim_ListAppendElement(interp, mapRes, interp->result); break; case JIM_CONTINUE: break; case JIM_BREAK: goto out; break; default: goto err; } } out: result = JIM_OK; if (doMap) Jim_SetResult(interp, mapRes); else Jim_SetEmptyResult(interp); err: if (doMap) Jim_DecrRefCount(interp, mapRes); Jim_DecrRefCount(interp, emptyStr); Jim_Free(listsIdx); Jim_Free(listsEnd); return result; } /* [foreach] */ static int Jim_ForeachCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { return JimForeachMapHelper(interp, argc, argv, 0); } /* [lmap] */ static int Jim_LmapCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { return JimForeachMapHelper(interp, argc, argv, 1); } /* [if] */ static int Jim_IfCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { int boolean, retval, current = 1, falsebody = 0; if (argc >= 3) { while (1) { /* Far not enough arguments given! */ if (current >= argc) goto err; if ((retval = Jim_GetBoolFromExpr(interp, argv[current++], &boolean)) != JIM_OK) return retval; /* There lacks something, isn't it? */ if (current >= argc) goto err; if (Jim_CompareStringImmediate(interp, argv[current], "then")) current++; /* Tsk tsk, no then-clause? */ if (current >= argc) goto err; if (boolean) return Jim_EvalObj(interp, argv[current]); /* Ok: no else-clause follows */ if (++current >= argc) { Jim_SetResult(interp, Jim_NewEmptyStringObj(interp)); return JIM_OK; } falsebody = current++; if (Jim_CompareStringImmediate(interp, argv[falsebody], "else")) { /* IIICKS - else-clause isn't last cmd? */ if (current != argc - 1) goto err; return Jim_EvalObj(interp, argv[current]); } else if (Jim_CompareStringImmediate(interp, argv[falsebody], "elseif")) /* Ok: elseif follows meaning all the stuff * again (how boring...) */ continue; /* OOPS - else-clause is not last cmd? */ else if (falsebody != argc - 1) goto err; return Jim_EvalObj(interp, argv[falsebody]); } return JIM_OK; } err: Jim_WrongNumArgs(interp, 1, argv, "condition ?then? trueBody ?elseif ...? ?else? falseBody"); return JIM_ERR; } /* Returns 1 if match, 0 if no match or - on error (e.g. -JIM_ERR, -JIM_BREAK)*/ int Jim_CommandMatchObj(Jim_Interp *interp, Jim_Obj *commandObj, Jim_Obj *patternObj, Jim_Obj *stringObj, int nocase) { Jim_Obj *parms[4]; int argc = 0; long eq; int rc; parms[argc++] = commandObj; if (nocase) { parms[argc++] = Jim_NewStringObj(interp, "-nocase", -1); } parms[argc++] = patternObj; parms[argc++] = stringObj; rc = Jim_EvalObjVector(interp, argc, parms); if (rc != JIM_OK || Jim_GetLong(interp, Jim_GetResult(interp), &eq) != JIM_OK) { eq = -rc; } return eq; } enum { SWITCH_EXACT, SWITCH_GLOB, SWITCH_RE, SWITCH_CMD }; /* [switch] */ static int Jim_SwitchCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { int matchOpt = SWITCH_EXACT, opt = 1, patCount, i; Jim_Obj *command = 0, *const *caseList = 0, *strObj; Jim_Obj *script = 0; if (argc < 3) { wrongnumargs: Jim_WrongNumArgs(interp, 1, argv, "?options? string " "pattern body ... ?default body? or " "{pattern body ?pattern body ...?}"); return JIM_ERR; } for (opt = 1; opt < argc; ++opt) { const char *option = Jim_GetString(argv[opt], 0); if (*option != '-') break; else if (strncmp(option, "--", 2) == 0) { ++opt; break; } else if (strncmp(option, "-exact", 2) == 0) matchOpt = SWITCH_EXACT; else if (strncmp(option, "-glob", 2) == 0) matchOpt = SWITCH_GLOB; else if (strncmp(option, "-regexp", 2) == 0) matchOpt = SWITCH_RE; else if (strncmp(option, "-command", 2) == 0) { matchOpt = SWITCH_CMD; if ((argc - opt) < 2) goto wrongnumargs; command = argv[++opt]; } else { Jim_SetResultFormatted(interp, "bad option \"%#s\": must be -exact, -glob, -regexp, -command procname or --", argv[opt]); return JIM_ERR; } if ((argc - opt) < 2) goto wrongnumargs; } strObj = argv[opt++]; patCount = argc - opt; if (patCount == 1) { Jim_Obj **vector; JimListGetElements(interp, argv[opt], &patCount, &vector); caseList = vector; } else caseList = &argv[opt]; if (patCount == 0 || patCount % 2 != 0) goto wrongnumargs; for (i = 0; script == 0 && i < patCount; i += 2) { Jim_Obj *patObj = caseList[i]; if (!Jim_CompareStringImmediate(interp, patObj, "default") || i < (patCount - 2)) { switch (matchOpt) { case SWITCH_EXACT: if (Jim_StringEqObj(strObj, patObj)) script = caseList[i + 1]; break; case SWITCH_GLOB: if (Jim_StringMatchObj(interp, patObj, strObj, 0)) script = caseList[i + 1]; break; case SWITCH_RE: command = Jim_NewStringObj(interp, "regexp", -1); /* Fall thru intentionally */ case SWITCH_CMD:{ int rc = Jim_CommandMatchObj(interp, command, patObj, strObj, 0); /* After the execution of a command we need to * make sure to reconvert the object into a list * again. Only for the single-list style [switch]. */ if (argc - opt == 1) { Jim_Obj **vector; JimListGetElements(interp, argv[opt], &patCount, &vector); caseList = vector; } /* command is here already decref'd */ if (rc < 0) { return -rc; } if (rc) script = caseList[i + 1]; break; } } } else { script = caseList[i + 1]; } } for (; i < patCount && Jim_CompareStringImmediate(interp, script, "-"); i += 2) script = caseList[i + 1]; if (script && Jim_CompareStringImmediate(interp, script, "-")) { Jim_SetResultFormatted(interp, "no body specified for pattern \"%#s\"", caseList[i - 2]); return JIM_ERR; } Jim_SetEmptyResult(interp); if (script) { return Jim_EvalObj(interp, script); } return JIM_OK; } /* [list] */ static int Jim_ListCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { Jim_Obj *listObjPtr; listObjPtr = Jim_NewListObj(interp, argv + 1, argc - 1); Jim_SetResult(interp, listObjPtr); return JIM_OK; } /* [lindex] */ static int Jim_LindexCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { Jim_Obj *objPtr, *listObjPtr; int i; int idx; if (argc < 3) { Jim_WrongNumArgs(interp, 1, argv, "list index ?...?"); return JIM_ERR; } objPtr = argv[1]; Jim_IncrRefCount(objPtr); for (i = 2; i < argc; i++) { listObjPtr = objPtr; if (Jim_GetIndex(interp, argv[i], &idx) != JIM_OK) { Jim_DecrRefCount(interp, listObjPtr); return JIM_ERR; } if (Jim_ListIndex(interp, listObjPtr, idx, &objPtr, JIM_NONE) != JIM_OK) { /* Returns an empty object if the index * is out of range. */ Jim_DecrRefCount(interp, listObjPtr); Jim_SetEmptyResult(interp); return JIM_OK; } Jim_IncrRefCount(objPtr); Jim_DecrRefCount(interp, listObjPtr); } Jim_SetResult(interp, objPtr); Jim_DecrRefCount(interp, objPtr); return JIM_OK; } /* [llength] */ static int Jim_LlengthCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { if (argc != 2) { Jim_WrongNumArgs(interp, 1, argv, "list"); return JIM_ERR; } Jim_SetResultInt(interp, Jim_ListLength(interp, argv[1])); return JIM_OK; } /* [lsearch] */ static int Jim_LsearchCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { static const char * const options[] = { "-bool", "-not", "-nocase", "-exact", "-glob", "-regexp", "-all", "-inline", "-command", NULL }; enum { OPT_BOOL, OPT_NOT, OPT_NOCASE, OPT_EXACT, OPT_GLOB, OPT_REGEXP, OPT_ALL, OPT_INLINE, OPT_COMMAND }; int i; int opt_bool = 0; int opt_not = 0; int opt_nocase = 0; int opt_all = 0; int opt_inline = 0; int opt_match = OPT_EXACT; int listlen; int rc = JIM_OK; Jim_Obj *listObjPtr = NULL; Jim_Obj *commandObj = NULL; if (argc < 3) { wrongargs: Jim_WrongNumArgs(interp, 1, argv, "?-exact|-glob|-regexp|-command 'command'? ?-bool|-inline? ?-not? ?-nocase? ?-all? list value"); return JIM_ERR; } for (i = 1; i < argc - 2; i++) { int option; if (Jim_GetEnum(interp, argv[i], options, &option, NULL, JIM_ERRMSG) != JIM_OK) { return JIM_ERR; } switch (option) { case OPT_BOOL: opt_bool = 1; opt_inline = 0; break; case OPT_NOT: opt_not = 1; break; case OPT_NOCASE: opt_nocase = 1; break; case OPT_INLINE: opt_inline = 1; opt_bool = 0; break; case OPT_ALL: opt_all = 1; break; case OPT_COMMAND: if (i >= argc - 2) { goto wrongargs; } commandObj = argv[++i]; /* fallthru */ case OPT_EXACT: case OPT_GLOB: case OPT_REGEXP: opt_match = option; break; } } argv += i; if (opt_all) { listObjPtr = Jim_NewListObj(interp, NULL, 0); } if (opt_match == OPT_REGEXP) { commandObj = Jim_NewStringObj(interp, "regexp", -1); } if (commandObj) { Jim_IncrRefCount(commandObj); } listlen = Jim_ListLength(interp, argv[0]); for (i = 0; i < listlen; i++) { Jim_Obj *objPtr; int eq = 0; Jim_ListIndex(interp, argv[0], i, &objPtr, JIM_NONE); switch (opt_match) { case OPT_EXACT: eq = Jim_StringCompareObj(interp, objPtr, argv[1], opt_nocase) == 0; break; case OPT_GLOB: eq = Jim_StringMatchObj(interp, argv[1], objPtr, opt_nocase); break; case OPT_REGEXP: case OPT_COMMAND: eq = Jim_CommandMatchObj(interp, commandObj, argv[1], objPtr, opt_nocase); if (eq < 0) { if (listObjPtr) { Jim_FreeNewObj(interp, listObjPtr); } rc = JIM_ERR; goto done; } break; } /* If we have a non-match with opt_bool, opt_not, !opt_all, can't exit early */ if (!eq && opt_bool && opt_not && !opt_all) { continue; } if ((!opt_bool && eq == !opt_not) || (opt_bool && (eq || opt_all))) { /* Got a match (or non-match for opt_not), or (opt_bool && opt_all) */ Jim_Obj *resultObj; if (opt_bool) { resultObj = Jim_NewIntObj(interp, eq ^ opt_not); } else if (!opt_inline) { resultObj = Jim_NewIntObj(interp, i); } else { resultObj = objPtr; } if (opt_all) { Jim_ListAppendElement(interp, listObjPtr, resultObj); } else { Jim_SetResult(interp, resultObj); goto done; } } } if (opt_all) { Jim_SetResult(interp, listObjPtr); } else { /* No match */ if (opt_bool) { Jim_SetResultBool(interp, opt_not); } else if (!opt_inline) { Jim_SetResultInt(interp, -1); } } done: if (commandObj) { Jim_DecrRefCount(interp, commandObj); } return rc; } /* [lappend] */ static int Jim_LappendCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { Jim_Obj *listObjPtr; int shared, i; if (argc < 2) { Jim_WrongNumArgs(interp, 1, argv, "varName ?value value ...?"); return JIM_ERR; } listObjPtr = Jim_GetVariable(interp, argv[1], JIM_UNSHARED); if (!listObjPtr) { /* Create the list if it does not exists */ listObjPtr = Jim_NewListObj(interp, NULL, 0); if (Jim_SetVariable(interp, argv[1], listObjPtr) != JIM_OK) { Jim_FreeNewObj(interp, listObjPtr); return JIM_ERR; } } shared = Jim_IsShared(listObjPtr); if (shared) listObjPtr = Jim_DuplicateObj(interp, listObjPtr); for (i = 2; i < argc; i++) Jim_ListAppendElement(interp, listObjPtr, argv[i]); if (Jim_SetVariable(interp, argv[1], listObjPtr) != JIM_OK) { if (shared) Jim_FreeNewObj(interp, listObjPtr); return JIM_ERR; } Jim_SetResult(interp, listObjPtr); return JIM_OK; } /* [linsert] */ static int Jim_LinsertCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { int idx, len; Jim_Obj *listPtr; if (argc < 4) { Jim_WrongNumArgs(interp, 1, argv, "list index element " "?element ...?"); return JIM_ERR; } listPtr = argv[1]; if (Jim_IsShared(listPtr)) listPtr = Jim_DuplicateObj(interp, listPtr); if (Jim_GetIndex(interp, argv[2], &idx) != JIM_OK) goto err; len = Jim_ListLength(interp, listPtr); if (idx >= len) idx = len; else if (idx < 0) idx = len + idx + 1; Jim_ListInsertElements(interp, listPtr, idx, argc - 3, &argv[3]); Jim_SetResult(interp, listPtr); return JIM_OK; err: if (listPtr != argv[1]) { Jim_FreeNewObj(interp, listPtr); } return JIM_ERR; } /* [lreplace] */ static int Jim_LreplaceCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { int first, last, len, rangeLen; Jim_Obj *listObj; Jim_Obj *newListObj; int i; int shared; if (argc < 4) { Jim_WrongNumArgs(interp, 1, argv, "list first last ?element element ...?"); return JIM_ERR; } if (Jim_GetIndex(interp, argv[2], &first) != JIM_OK || Jim_GetIndex(interp, argv[3], &last) != JIM_OK) { return JIM_ERR; } listObj = argv[1]; len = Jim_ListLength(interp, listObj); first = JimRelToAbsIndex(len, first); last = JimRelToAbsIndex(len, last); JimRelToAbsRange(len, first, last, &first, &last, &rangeLen); /* Now construct a new list which consists of: * */ /* Check to see if trying to replace past the end of the list */ if (first < len) { /* OK. Not past the end */ } else if (len == 0) { /* Special for empty list, adjust first to 0 */ first = 0; } else { Jim_SetResultString(interp, "list doesn't contain element ", -1); Jim_AppendObj(interp, Jim_GetResult(interp), argv[2]); return JIM_ERR; } newListObj = Jim_NewListObj(interp, NULL, 0); shared = Jim_IsShared(listObj); if (shared) { listObj = Jim_DuplicateObj(interp, listObj); } /* Add the first set of elements */ for (i = 0; i < first; i++) { Jim_ListAppendElement(interp, newListObj, listObj->internalRep.listValue.ele[i]); } /* Add supplied elements */ for (i = 4; i < argc; i++) { Jim_ListAppendElement(interp, newListObj, argv[i]); } /* Add the remaining elements */ for (i = first + rangeLen; i < len; i++) { Jim_ListAppendElement(interp, newListObj, listObj->internalRep.listValue.ele[i]); } Jim_SetResult(interp, newListObj); if (shared) { Jim_FreeNewObj(interp, listObj); } return JIM_OK; } /* [lset] */ static int Jim_LsetCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { if (argc < 3) { Jim_WrongNumArgs(interp, 1, argv, "listVar ?index...? newVal"); return JIM_ERR; } else if (argc == 3) { if (Jim_SetVariable(interp, argv[1], argv[2]) != JIM_OK) return JIM_ERR; Jim_SetResult(interp, argv[2]); return JIM_OK; } if (Jim_SetListIndex(interp, argv[1], argv + 2, argc - 3, argv[argc - 1]) == JIM_ERR) return JIM_ERR; return JIM_OK; } /* [lsort] */ static int Jim_LsortCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const argv[]) { const char *options[] = { "-ascii", "-nocase", "-increasing", "-decreasing", "-command", "-integer", "-index", NULL }; enum { OPT_ASCII, OPT_NOCASE, OPT_INCREASING, OPT_DECREASING, OPT_COMMAND, OPT_INTEGER, OPT_INDEX }; Jim_Obj *resObj; int i; int retCode; struct lsort_info info; if (argc < 2) { Jim_WrongNumArgs(interp, 1, argv, "?options? list"); return JIM_ERR; } info.type = JIM_LSORT_ASCII; info.order = 1; info.indexed = 0; info.command = NULL; info.interp = interp; for (i = 1; i < (argc - 1); i++) { int option; if (Jim_GetEnum(interp, argv[i], options, &option, NULL, JIM_ERRMSG) != JIM_OK) return JIM_ERR; switch (option) { case OPT_ASCII: info.type = JIM_LSORT_ASCII; break; case OPT_NOCASE: info.type = JIM_LSORT_NOCASE; break; case OPT_INTEGER: info.type = JIM_LSORT_INTEGER; break; case OPT_INCREASING: info.order = 1; break; case OPT_DECREASING: info.order = -1; break; case OPT_COMMAND: if (i >= (argc - 2)) { Jim_SetResultString(interp, "\"-command\" option must be followed by comparison command", -1); return JIM_ERR; } info.type = JIM_LSORT_COMMAND; info.command = argv[i + 1]; i++; break; case OPT_INDEX: if (i >= (argc - 2)) { Jim_SetResultString(interp, "\"-index\" option must be followed by list index", -1); return JIM_ERR; } if (Jim_GetIndex(interp, argv[i + 1], &info.index) != JIM_OK) { return JIM_ERR; } info.indexed = 1; i++; break; } } resObj = Jim_DuplicateObj(interp, argv[argc - 1]); retCode = ListSortElements(interp, resObj, &info); if (retCode == JIM_OK) { Jim_SetResult(interp, resObj); } else { Jim_FreeNewObj(interp, resObj); } return retCode; } /* [append] */ static int Jim_AppendCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { Jim_Obj *stringObjPtr; int shared, i; if (argc < 2) { Jim_WrongNumArgs(interp, 1, argv, "varName ?value value ...?"); return JIM_ERR; } if (argc == 2) { stringObjPtr = Jim_GetVariable(interp, argv[1], JIM_ERRMSG); if (!stringObjPtr) return JIM_ERR; } else { stringObjPtr = Jim_GetVariable(interp, argv[1], JIM_UNSHARED); if (!stringObjPtr) { /* Create the string if it does not exists */ stringObjPtr = Jim_NewEmptyStringObj(interp); if (Jim_SetVariable(interp, argv[1], stringObjPtr) != JIM_OK) { Jim_FreeNewObj(interp, stringObjPtr); return JIM_ERR; } } } shared = Jim_IsShared(stringObjPtr); if (shared) stringObjPtr = Jim_DuplicateObj(interp, stringObjPtr); for (i = 2; i < argc; i++) Jim_AppendObj(interp, stringObjPtr, argv[i]); if (Jim_SetVariable(interp, argv[1], stringObjPtr) != JIM_OK) { if (shared) Jim_FreeNewObj(interp, stringObjPtr); return JIM_ERR; } Jim_SetResult(interp, stringObjPtr); return JIM_OK; } /* [debug] */ static int Jim_DebugCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { #ifdef JIM_DEBUG_COMMAND const char *options[] = { "refcount", "objcount", "objects", "invstr", "scriptlen", "exprlen", "exprbc", "show", NULL }; enum { OPT_REFCOUNT, OPT_OBJCOUNT, OPT_OBJECTS, OPT_INVSTR, OPT_SCRIPTLEN, OPT_EXPRLEN, OPT_EXPRBC, OPT_SHOW, }; int option; if (argc < 2) { Jim_WrongNumArgs(interp, 1, argv, "subcommand ?...?"); return JIM_ERR; } if (Jim_GetEnum(interp, argv[1], options, &option, "subcommand", JIM_ERRMSG) != JIM_OK) return JIM_ERR; if (option == OPT_REFCOUNT) { if (argc != 3) { Jim_WrongNumArgs(interp, 2, argv, "object"); return JIM_ERR; } Jim_SetResultInt(interp, argv[2]->refCount); return JIM_OK; } else if (option == OPT_OBJCOUNT) { int freeobj = 0, liveobj = 0; char buf[256]; Jim_Obj *objPtr; if (argc != 2) { Jim_WrongNumArgs(interp, 2, argv, ""); return JIM_ERR; } /* Count the number of free objects. */ objPtr = interp->freeList; while (objPtr) { freeobj++; objPtr = objPtr->nextObjPtr; } /* Count the number of live objects. */ objPtr = interp->liveList; while (objPtr) { liveobj++; objPtr = objPtr->nextObjPtr; } /* Set the result string and return. */ sprintf(buf, "free %d used %d", freeobj, liveobj); Jim_SetResultString(interp, buf, -1); return JIM_OK; } else if (option == OPT_OBJECTS) { Jim_Obj *objPtr, *listObjPtr, *subListObjPtr; /* Count the number of live objects. */ objPtr = interp->liveList; listObjPtr = Jim_NewListObj(interp, NULL, 0); while (objPtr) { char buf[128]; const char *type = objPtr->typePtr ? objPtr->typePtr->name : ""; subListObjPtr = Jim_NewListObj(interp, NULL, 0); sprintf(buf, "%p", objPtr); Jim_ListAppendElement(interp, subListObjPtr, Jim_NewStringObj(interp, buf, -1)); Jim_ListAppendElement(interp, subListObjPtr, Jim_NewStringObj(interp, type, -1)); Jim_ListAppendElement(interp, subListObjPtr, Jim_NewIntObj(interp, objPtr->refCount)); Jim_ListAppendElement(interp, subListObjPtr, objPtr); Jim_ListAppendElement(interp, listObjPtr, subListObjPtr); objPtr = objPtr->nextObjPtr; } Jim_SetResult(interp, listObjPtr); return JIM_OK; } else if (option == OPT_INVSTR) { Jim_Obj *objPtr; if (argc != 3) { Jim_WrongNumArgs(interp, 2, argv, "object"); return JIM_ERR; } objPtr = argv[2]; if (objPtr->typePtr != NULL) Jim_InvalidateStringRep(objPtr); Jim_SetEmptyResult(interp); return JIM_OK; } else if (option == OPT_SHOW) { const char *s; int len, charlen; if (argc != 3) { Jim_WrongNumArgs(interp, 2, argv, "object"); return JIM_ERR; } s = Jim_GetString(argv[2], &len); charlen = Jim_Utf8Length(interp, argv[2]); printf("chars (%d): <<%s>>\n", charlen, s); printf("bytes (%d):", len); while (len--) { printf(" %02x", (unsigned char)*s++); } printf("\n"); return JIM_OK; } else if (option == OPT_SCRIPTLEN) { ScriptObj *script; if (argc != 3) { Jim_WrongNumArgs(interp, 2, argv, "script"); return JIM_ERR; } script = Jim_GetScript(interp, argv[2]); Jim_SetResultInt(interp, script->len); return JIM_OK; } else if (option == OPT_EXPRLEN) { ExprByteCode *expr; if (argc != 3) { Jim_WrongNumArgs(interp, 2, argv, "expression"); return JIM_ERR; } expr = JimGetExpression(interp, argv[2]); if (expr == NULL) return JIM_ERR; Jim_SetResultInt(interp, expr->len); return JIM_OK; } else if (option == OPT_EXPRBC) { Jim_Obj *objPtr; ExprByteCode *expr; int i; if (argc != 3) { Jim_WrongNumArgs(interp, 2, argv, "expression"); return JIM_ERR; } expr = JimGetExpression(interp, argv[2]); if (expr == NULL) return JIM_ERR; objPtr = Jim_NewListObj(interp, NULL, 0); for (i = 0; i < expr->len; i++) { const char *type; const Jim_ExprOperator *op; Jim_Obj *obj = expr->token[i].objPtr; switch (expr->token[i].type) { case JIM_TT_EXPR_INT: type = "int"; break; case JIM_TT_EXPR_DOUBLE: type = "double"; break; case JIM_TT_CMD: type = "command"; break; case JIM_TT_VAR: type = "variable"; break; case JIM_TT_DICTSUGAR: type = "dictsugar"; break; case JIM_TT_ESC: type = "subst"; break; case JIM_TT_STR: type = "string"; break; default: op = JimExprOperatorInfoByOpcode(expr->token[i].type); if (op == NULL) { type = "private"; } else { type = "operator"; } obj = Jim_NewStringObj(interp, op ? op->name : "", -1); break; } Jim_ListAppendElement(interp, objPtr, Jim_NewStringObj(interp, type, -1)); Jim_ListAppendElement(interp, objPtr, obj); } Jim_SetResult(interp, objPtr); return JIM_OK; } else { Jim_SetResultString(interp, "bad option. Valid options are refcount, " "objcount, objects, invstr", -1); return JIM_ERR; } /* unreached */ #else Jim_SetResultString(interp, "unsupported", -1); return JIM_ERR; #endif } /* [eval] */ static int Jim_EvalCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { int rc; Jim_Stack *prevLocalProcs; if (argc < 2) { Jim_WrongNumArgs(interp, 1, argv, "script ?...?"); return JIM_ERR; } /* Install a new stack for local procs */ prevLocalProcs = interp->localProcs; interp->localProcs = NULL; if (argc == 2) { rc = Jim_EvalObj(interp, argv[1]); } else { rc = Jim_EvalObj(interp, Jim_ConcatObj(interp, argc - 1, argv + 1)); } /* Delete any local procs */ JimDeleteLocalProcs(interp); interp->localProcs = prevLocalProcs; if (rc == JIM_ERR) { /* eval is "interesting", so add a stack frame here */ interp->addStackTrace++; } return rc; } /* [uplevel] */ static int Jim_UplevelCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { if (argc >= 2) { int retcode; Jim_CallFrame *savedCallFrame, *targetCallFrame; Jim_Obj *objPtr; const char *str; /* Save the old callframe pointer */ savedCallFrame = interp->framePtr; /* Lookup the target frame pointer */ str = Jim_GetString(argv[1], NULL); if ((str[0] >= '0' && str[0] <= '9') || str[0] == '#') { targetCallFrame =Jim_GetCallFrameByLevel(interp, argv[1]); argc--; argv++; } else { targetCallFrame = Jim_GetCallFrameByLevel(interp, NULL); } if (targetCallFrame == NULL) { return JIM_ERR; } if (argc < 2) { argv--; Jim_WrongNumArgs(interp, 1, argv, "?level? command ?arg ...?"); return JIM_ERR; } /* Eval the code in the target callframe. */ interp->framePtr = targetCallFrame; if (argc == 2) { retcode = Jim_EvalObj(interp, argv[1]); } else { objPtr = Jim_ConcatObj(interp, argc - 1, argv + 1); Jim_IncrRefCount(objPtr); retcode = Jim_EvalObj(interp, objPtr); Jim_DecrRefCount(interp, objPtr); } interp->framePtr = savedCallFrame; return retcode; } else { Jim_WrongNumArgs(interp, 1, argv, "?level? command ?arg ...?"); return JIM_ERR; } } /* [expr] */ static int Jim_ExprCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { Jim_Obj *exprResultPtr; int retcode; if (argc == 2) { retcode = Jim_EvalExpression(interp, argv[1], &exprResultPtr); } else if (argc > 2) { Jim_Obj *objPtr; objPtr = Jim_ConcatObj(interp, argc - 1, argv + 1); Jim_IncrRefCount(objPtr); retcode = Jim_EvalExpression(interp, objPtr, &exprResultPtr); Jim_DecrRefCount(interp, objPtr); } else { Jim_WrongNumArgs(interp, 1, argv, "expression ?...?"); return JIM_ERR; } if (retcode != JIM_OK) return retcode; Jim_SetResult(interp, exprResultPtr); Jim_DecrRefCount(interp, exprResultPtr); return JIM_OK; } /* [break] */ static int Jim_BreakCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { if (argc != 1) { Jim_WrongNumArgs(interp, 1, argv, ""); return JIM_ERR; } return JIM_BREAK; } /* [continue] */ static int Jim_ContinueCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { if (argc != 1) { Jim_WrongNumArgs(interp, 1, argv, ""); return JIM_ERR; } return JIM_CONTINUE; } /* [return] */ static int Jim_ReturnCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { int i; Jim_Obj *stackTraceObj = NULL; Jim_Obj *errorCodeObj = NULL; int returnCode = JIM_OK; long level = 1; for (i = 1; i < argc - 1; i += 2) { if (Jim_CompareStringImmediate(interp, argv[i], "-code")) { if (Jim_GetReturnCode(interp, argv[i + 1], &returnCode) == JIM_ERR) { return JIM_ERR; } } else if (Jim_CompareStringImmediate(interp, argv[i], "-errorinfo")) { stackTraceObj = argv[i + 1]; } else if (Jim_CompareStringImmediate(interp, argv[i], "-errorcode")) { errorCodeObj = argv[i + 1]; } else if (Jim_CompareStringImmediate(interp, argv[i], "-level")) { if (Jim_GetLong(interp, argv[i + 1], &level) != JIM_OK || level < 0) { Jim_SetResultFormatted(interp, "bad level \"%#s\"", argv[i + 1]); return JIM_ERR; } } else { break; } } if (i != argc - 1 && i != argc) { Jim_WrongNumArgs(interp, 1, argv, "?-code code? ?-errorinfo stacktrace? ?-level level? ?result?"); } /* If a stack trace is supplied and code is error, set the stack trace */ if (stackTraceObj && returnCode == JIM_ERR) { JimSetStackTrace(interp, stackTraceObj); } /* If an error code list is supplied, set the global $errorCode */ if (errorCodeObj && returnCode == JIM_ERR) { Jim_SetGlobalVariableStr(interp, "errorCode", errorCodeObj); } interp->returnCode = returnCode; interp->returnLevel = level; if (i == argc - 1) { Jim_SetResult(interp, argv[i]); } return JIM_RETURN; } /* [tailcall] */ static int Jim_TailcallCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { Jim_Obj *objPtr; objPtr = Jim_NewListObj(interp, argv + 1, argc - 1); Jim_SetResult(interp, objPtr); return JIM_EVAL; } /* [proc] */ static int Jim_ProcCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { int argListLen; int leftArity, rightArity; int i; int optionalArgs = 0; int args = 0; if (argc != 4 && argc != 5) { Jim_WrongNumArgs(interp, 1, argv, "name arglist ?statics? body"); return JIM_ERR; } if (Jim_ValidName(interp, "procedure", argv[1]) != JIM_OK) { return JIM_ERR; } argListLen = Jim_ListLength(interp, argv[2]); leftArity = 0; rightArity = 0; /* Examine the argument list for default parameters and 'args' */ for (i = 0; i < argListLen; i++) { Jim_Obj *argPtr; int len; /* Examine a parameter */ Jim_ListIndex(interp, argv[2], i, &argPtr, JIM_NONE); len = Jim_ListLength(interp, argPtr); if (len == 0) { Jim_SetResultString(interp, "procedure has argument with no name", -1); return JIM_ERR; } if (len > 2) { Jim_SetResultString(interp, "procedure has argument with too many fields", -1); return JIM_ERR; } if (len == 2) { /* May be {args newname} */ Jim_ListIndex(interp, argPtr, 0, &argPtr, JIM_NONE); } if (Jim_CompareStringImmediate(interp, argPtr, "args")) { if (args) { Jim_SetResultString(interp, "procedure has 'args' specified more than once", -1); return JIM_ERR; } if (rightArity) { Jim_SetResultString(interp, "procedure has 'args' in invalid position", -1); return JIM_ERR; } args = 1; continue; } /* Does this parameter have a default? */ if (len == 1) { /* A required arg. Is it part of leftArity or rightArity? */ if (optionalArgs || args) { rightArity++; } else { leftArity++; } } else { /* Optional arg. Can't be after rightArity */ if (rightArity || args) { Jim_SetResultString(interp, "procedure has optional arg in invalid position", -1); return JIM_ERR; } optionalArgs++; } } if (argc == 4) { return JimCreateProcedure(interp, Jim_GetString(argv[1], NULL), argv[2], NULL, argv[3], leftArity, optionalArgs, args, rightArity); } else { return JimCreateProcedure(interp, Jim_GetString(argv[1], NULL), argv[2], argv[3], argv[4], leftArity, optionalArgs, args, rightArity); } } /* [local] */ static int Jim_LocalCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { /* Evaluate the arguments */ int retcode = Jim_EvalObjVector(interp, argc - 1, argv + 1); /* If OK, and the result is a proc, add it to the list of local procs */ if (retcode == 0) { const char *procname = Jim_GetString(Jim_GetResult(interp), NULL); if (Jim_FindHashEntry(&interp->commands, procname) == NULL) { Jim_SetResultFormatted(interp, "not a proc: \"%s\"", procname); return JIM_ERR; } if (interp->localProcs == NULL) { interp->localProcs = Jim_Alloc(sizeof(*interp->localProcs)); Jim_InitStack(interp->localProcs); } Jim_StackPush(interp->localProcs, Jim_StrDup(procname)); } return retcode; } /* [concat] */ static int Jim_ConcatCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { Jim_SetResult(interp, Jim_ConcatObj(interp, argc - 1, argv + 1)); return JIM_OK; } /* [upvar] */ static int Jim_UpvarCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { int i; Jim_CallFrame *targetCallFrame; /* Lookup the target frame pointer */ if (argc > 3 && (argc % 2 == 0)) { targetCallFrame = Jim_GetCallFrameByLevel(interp, argv[1]); argc--; argv++; } else { targetCallFrame = Jim_GetCallFrameByLevel(interp, NULL); } if (targetCallFrame == NULL) { return JIM_ERR; } /* Check for arity */ if (argc < 3) { Jim_WrongNumArgs(interp, 1, argv, "?level? otherVar localVar ?otherVar localVar ...?"); return JIM_ERR; } /* Now... for every other/local couple: */ for (i = 1; i < argc; i += 2) { if (Jim_SetVariableLink(interp, argv[i + 1], argv[i], targetCallFrame) != JIM_OK) return JIM_ERR; } return JIM_OK; } /* [global] */ static int Jim_GlobalCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { int i; if (argc < 2) { Jim_WrongNumArgs(interp, 1, argv, "varName ?varName ...?"); return JIM_ERR; } /* Link every var to the toplevel having the same name */ if (interp->framePtr->level == 0) return JIM_OK; /* global at toplevel... */ for (i = 1; i < argc; i++) { if (Jim_SetVariableLink(interp, argv[i], argv[i], interp->topFramePtr) != JIM_OK) return JIM_ERR; } return JIM_OK; } /* does the [string map] operation. On error NULL is returned, * otherwise a new string object with the result, having refcount = 0, * is returned. */ static Jim_Obj *JimStringMap(Jim_Interp *interp, Jim_Obj *mapListObjPtr, Jim_Obj *objPtr, int nocase) { int numMaps; const char *str, *noMatchStart = NULL; int strLen, i; Jim_Obj *resultObjPtr; numMaps = Jim_ListLength(interp, mapListObjPtr); if (numMaps % 2) { Jim_SetResultString(interp, "list must contain an even number of elements", -1); return NULL; } str = Jim_GetString(objPtr, NULL); strLen = Jim_Utf8Length(interp, objPtr); /* Map it */ resultObjPtr = Jim_NewStringObj(interp, "", 0); while (strLen) { for (i = 0; i < numMaps; i += 2) { Jim_Obj *objPtr; const char *k; int kl; Jim_ListIndex(interp, mapListObjPtr, i, &objPtr, JIM_NONE); k = Jim_GetString(objPtr, NULL); kl = Jim_Utf8Length(interp, objPtr); if (strLen >= kl && kl) { int rc; if (nocase) { rc = JimStringCompareNoCase(str, k, kl); } else { rc = JimStringCompare(str, kl, k, kl); } if (rc == 0) { if (noMatchStart) { Jim_AppendString(interp, resultObjPtr, noMatchStart, str - noMatchStart); noMatchStart = NULL; } Jim_ListIndex(interp, mapListObjPtr, i + 1, &objPtr, JIM_NONE); Jim_AppendObj(interp, resultObjPtr, objPtr); str += utf8_index(str, kl); strLen -= kl; break; } } } if (i == numMaps) { /* no match */ int c; if (noMatchStart == NULL) noMatchStart = str; str += utf8_tounicode(str, &c); strLen--; } } if (noMatchStart) { Jim_AppendString(interp, resultObjPtr, noMatchStart, str - noMatchStart); } return resultObjPtr; } /* [string] */ static int Jim_StringCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { int len; int opt_case = 1; int option; static const char * const options[] = { "bytelength", "length", "compare", "match", "equal", "is", "range", "map", "repeat", "reverse", "index", "first", "last", "trim", "trimleft", "trimright", "tolower", "toupper", NULL }; enum { OPT_BYTELENGTH, OPT_LENGTH, OPT_COMPARE, OPT_MATCH, OPT_EQUAL, OPT_IS, OPT_RANGE, OPT_MAP, OPT_REPEAT, OPT_REVERSE, OPT_INDEX, OPT_FIRST, OPT_LAST, OPT_TRIM, OPT_TRIMLEFT, OPT_TRIMRIGHT, OPT_TOLOWER, OPT_TOUPPER }; static const char * const nocase_options[] = { "-nocase", NULL }; if (argc < 2) { Jim_WrongNumArgs(interp, 1, argv, "option ?arguments ...?"); return JIM_ERR; } if (Jim_GetEnum(interp, argv[1], options, &option, NULL, JIM_ERRMSG | JIM_ENUM_ABBREV) != JIM_OK) return JIM_ERR; switch (option) { case OPT_LENGTH: case OPT_BYTELENGTH: if (argc != 3) { Jim_WrongNumArgs(interp, 2, argv, "string"); return JIM_ERR; } if (option == OPT_LENGTH) { len = Jim_Utf8Length(interp, argv[2]); } else { len = Jim_Length(argv[2]); } Jim_SetResultInt(interp, len); return JIM_OK; case OPT_COMPARE: case OPT_EQUAL: if (argc != 4 && (argc != 5 || Jim_GetEnum(interp, argv[2], nocase_options, &opt_case, NULL, JIM_ENUM_ABBREV) != JIM_OK)) { Jim_WrongNumArgs(interp, 2, argv, "?-nocase? string1 string2"); return JIM_ERR; } if (opt_case == 0) { argv++; } if (option == OPT_COMPARE) { Jim_SetResultInt(interp, Jim_StringCompareObj(interp, argv[2], argv[3], !opt_case)); } else if (opt_case) { Jim_SetResultBool(interp, Jim_StringEqObj(argv[2], argv[3])); } else { Jim_SetResultBool(interp, Jim_StringCompareObj(interp, argv[2], argv[3], 1) == 0); } return JIM_OK; case OPT_MATCH: if (argc != 4 && (argc != 5 || Jim_GetEnum(interp, argv[2], nocase_options, &opt_case, NULL, JIM_ENUM_ABBREV) != JIM_OK)) { Jim_WrongNumArgs(interp, 2, argv, "?-nocase? pattern string"); return JIM_ERR; } if (opt_case == 0) { argv++; } Jim_SetResultBool(interp, Jim_StringMatchObj(interp, argv[2], argv[3], !opt_case)); return JIM_OK; case OPT_MAP:{ Jim_Obj *objPtr; if (argc != 4 && (argc != 5 || Jim_GetEnum(interp, argv[2], nocase_options, &opt_case, NULL, JIM_ENUM_ABBREV) != JIM_OK)) { Jim_WrongNumArgs(interp, 2, argv, "?-nocase? mapList string"); return JIM_ERR; } if (opt_case == 0) { argv++; } objPtr = JimStringMap(interp, argv[2], argv[3], !opt_case); if (objPtr == NULL) { return JIM_ERR; } Jim_SetResult(interp, objPtr); return JIM_OK; } case OPT_RANGE:{ Jim_Obj *objPtr; if (argc != 5) { Jim_WrongNumArgs(interp, 2, argv, "string first last"); return JIM_ERR; } objPtr = Jim_StringRangeObj(interp, argv[2], argv[3], argv[4]); if (objPtr == NULL) { return JIM_ERR; } Jim_SetResult(interp, objPtr); return JIM_OK; } case OPT_REPEAT:{ Jim_Obj *objPtr; jim_wide count; if (argc != 4) { Jim_WrongNumArgs(interp, 2, argv, "string count"); return JIM_ERR; } if (Jim_GetWide(interp, argv[3], &count) != JIM_OK) { return JIM_ERR; } objPtr = Jim_NewStringObj(interp, "", 0); if (count > 0) { while (count--) { Jim_AppendObj(interp, objPtr, argv[2]); } } Jim_SetResult(interp, objPtr); return JIM_OK; } case OPT_REVERSE:{ char *buf, *p; const char *str; int len; int i; if (argc != 3) { Jim_WrongNumArgs(interp, 2, argv, "string"); return JIM_ERR; } str = Jim_GetString(argv[2], &len); if (!str) { return JIM_ERR; } buf = Jim_Alloc(len + 1); p = buf + len; *p = 0; for (i = 0; i < len; ) { int c; int l = utf8_tounicode(str, &c); memcpy(p - l, str, l); p -= l; i += l; str += l; } Jim_SetResult(interp, Jim_NewStringObjNoAlloc(interp, buf, len)); return JIM_OK; } case OPT_INDEX:{ int idx; const char *str; if (argc != 4) { Jim_WrongNumArgs(interp, 2, argv, "string index"); return JIM_ERR; } if (Jim_GetIndex(interp, argv[3], &idx) != JIM_OK) { return JIM_ERR; } str = Jim_GetString(argv[2], NULL); len = Jim_Utf8Length(interp, argv[2]); if (idx != INT_MIN && idx != INT_MAX) { idx = JimRelToAbsIndex(len, idx); } if (idx < 0 || idx >= len || str == NULL) { Jim_SetResultString(interp, "", 0); } else if (len == Jim_Length(argv[2])) { /* ASCII optimisation */ Jim_SetResultString(interp, str + idx, 1); } else { int c; int i = utf8_index(str, idx); Jim_SetResultString(interp, str + i, utf8_tounicode(str + i, &c)); } return JIM_OK; } case OPT_FIRST: case OPT_LAST:{ int idx = 0, l1, l2; const char *s1, *s2; if (argc != 4 && argc != 5) { Jim_WrongNumArgs(interp, 2, argv, "subString string ?index?"); return JIM_ERR; } s1 = Jim_GetString(argv[2], NULL); s2 = Jim_GetString(argv[3], NULL); l1 = Jim_Utf8Length(interp, argv[2]); l2 = Jim_Utf8Length(interp, argv[3]); if (argc == 5) { if (Jim_GetIndex(interp, argv[4], &idx) != JIM_OK) { return JIM_ERR; } idx = JimRelToAbsIndex(l2, idx); } else if (option == OPT_LAST) { idx = l2; } if (option == OPT_FIRST) { Jim_SetResultInt(interp, JimStringFirst(s1, l1, s2, l2, idx)); } else { #ifdef JIM_UTF8 Jim_SetResultInt(interp, JimStringLastUtf8(s1, l1, s2, idx)); #else Jim_SetResultInt(interp, JimStringLast(s1, l1, s2, idx)); #endif } return JIM_OK; } case OPT_TRIM: case OPT_TRIMLEFT: case OPT_TRIMRIGHT:{ Jim_Obj *trimchars; if (argc != 3 && argc != 4) { Jim_WrongNumArgs(interp, 2, argv, "string ?trimchars?"); return JIM_ERR; } trimchars = (argc == 4 ? argv[3] : NULL); if (option == OPT_TRIM) { Jim_SetResult(interp, JimStringTrim(interp, argv[2], trimchars)); } else if (option == OPT_TRIMLEFT) { Jim_SetResult(interp, JimStringTrimLeft(interp, argv[2], trimchars)); } else if (option == OPT_TRIMRIGHT) { Jim_SetResult(interp, JimStringTrimRight(interp, argv[2], trimchars)); } return JIM_OK; } case OPT_TOLOWER: case OPT_TOUPPER: if (argc != 3) { Jim_WrongNumArgs(interp, 2, argv, "string"); return JIM_ERR; } if (option == OPT_TOLOWER) { Jim_SetResult(interp, JimStringToLower(interp, argv[2])); } else { Jim_SetResult(interp, JimStringToUpper(interp, argv[2])); } return JIM_OK; case OPT_IS: if (argc == 4 || (argc == 5 && Jim_CompareStringImmediate(interp, argv[3], "-strict"))) { return JimStringIs(interp, argv[argc - 1], argv[2], argc == 5); } Jim_WrongNumArgs(interp, 2, argv, "class ?-strict? str"); return JIM_ERR; } return JIM_OK; } /* [time] */ static int Jim_TimeCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { long i, count = 1; jim_wide start, elapsed; char buf[60]; const char *fmt = "%" JIM_WIDE_MODIFIER " microseconds per iteration"; if (argc < 2) { Jim_WrongNumArgs(interp, 1, argv, "script ?count?"); return JIM_ERR; } if (argc == 3) { if (Jim_GetLong(interp, argv[2], &count) != JIM_OK) return JIM_ERR; } if (count < 0) return JIM_OK; i = count; start = JimClock(); while (i-- > 0) { int retval; retval = Jim_EvalObj(interp, argv[1]); if (retval != JIM_OK) { return retval; } } elapsed = JimClock() - start; sprintf(buf, fmt, count == 0 ? 0 : elapsed / count); Jim_SetResultString(interp, buf, -1); return JIM_OK; } /* [exit] */ static int Jim_ExitCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { long exitCode = 0; if (argc > 2) { Jim_WrongNumArgs(interp, 1, argv, "?exitCode?"); return JIM_ERR; } if (argc == 2) { if (Jim_GetLong(interp, argv[1], &exitCode) != JIM_OK) return JIM_ERR; } interp->exitCode = exitCode; return JIM_EXIT; } /* [catch] */ static int Jim_CatchCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { int exitCode = 0; int i; int sig = 0; /* Which return codes are caught? These are the defaults */ jim_wide mask = (1 << JIM_OK | 1 << JIM_ERR | 1 << JIM_BREAK | 1 << JIM_CONTINUE | 1 << JIM_RETURN); /* Reset the error code before catch. * Note that this is not strictly correct. */ Jim_SetGlobalVariableStr(interp, "errorCode", Jim_NewStringObj(interp, "NONE", -1)); for (i = 1; i < argc - 1; i++) { const char *arg = Jim_GetString(argv[i], NULL); jim_wide option; int add; /* It's a pity we can't use Jim_GetEnum here :-( */ if (strcmp(arg, "--") == 0) { i++; break; } if (*arg != '-') { break; } if (strncmp(arg, "-no", 3) == 0) { arg += 3; add = 0; } else { arg++; add = 1; } if (Jim_StringToWide(arg, &option, 10) != JIM_OK) { option = -1; } if (option < 0) { option = Jim_FindByName(arg, jimReturnCodes, jimReturnCodesSize); } if (option < 0) { goto wrongargs; } if (add) { mask |= (1 << option); } else { mask &= ~(1 << option); } } argc -= i; if (argc < 1 || argc > 3) { wrongargs: Jim_WrongNumArgs(interp, 1, argv, "?-?no?code ... --? script ?resultVarName? ?optionVarName?"); return JIM_ERR; } argv += i; if (mask & (1 << JIM_SIGNAL)) { sig++; } interp->signal_level += sig; if (interp->signal_level && interp->sigmask) { /* If a signal is set, don't even try to execute the body */ exitCode = JIM_SIGNAL; } else { exitCode = Jim_EvalObj(interp, argv[0]); } interp->signal_level -= sig; /* Catch or pass through? Only the first 64 codes can be passed through */ if (exitCode >= 0 && exitCode < (int)sizeof(mask) && ((1 << exitCode) & mask) == 0) { /* Not caught, pass it up */ return exitCode; } if (sig && exitCode == JIM_SIGNAL) { /* Catch the signal at this level */ if (interp->signal_set_result) { interp->signal_set_result(interp, interp->sigmask); } else { Jim_SetResultInt(interp, interp->sigmask); } interp->sigmask = 0; } if (argc >= 2) { if (Jim_SetVariable(interp, argv[1], Jim_GetResult(interp)) != JIM_OK) { return JIM_ERR; } if (argc == 3) { Jim_Obj *optListObj = Jim_NewListObj(interp, NULL, 0); Jim_ListAppendElement(interp, optListObj, Jim_NewStringObj(interp, "-code", -1)); Jim_ListAppendElement(interp, optListObj, Jim_NewIntObj(interp, exitCode == JIM_RETURN ? interp->returnCode : exitCode)); Jim_ListAppendElement(interp, optListObj, Jim_NewStringObj(interp, "-level", -1)); Jim_ListAppendElement(interp, optListObj, Jim_NewIntObj(interp, interp->returnLevel)); if (exitCode == JIM_ERR) { Jim_Obj *errorCode; Jim_ListAppendElement(interp, optListObj, Jim_NewStringObj(interp, "-errorinfo", -1)); Jim_ListAppendElement(interp, optListObj, interp->stackTrace); errorCode = Jim_GetGlobalVariableStr(interp, "errorCode", JIM_NONE); if (errorCode) { Jim_ListAppendElement(interp, optListObj, Jim_NewStringObj(interp, "-errorcode", -1)); Jim_ListAppendElement(interp, optListObj, errorCode); } } if (Jim_SetVariable(interp, argv[2], optListObj) != JIM_OK) { return JIM_ERR; } } } Jim_SetResultInt(interp, exitCode); return JIM_OK; } #ifdef JIM_REFERENCES /* [ref] */ static int Jim_RefCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { if (argc != 3 && argc != 4) { Jim_WrongNumArgs(interp, 1, argv, "string tag ?finalizer?"); return JIM_ERR; } if (argc == 3) { Jim_SetResult(interp, Jim_NewReference(interp, argv[1], argv[2], NULL)); } else { Jim_SetResult(interp, Jim_NewReference(interp, argv[1], argv[2], argv[3])); } return JIM_OK; } /* [getref] */ static int Jim_GetrefCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { Jim_Reference *refPtr; if (argc != 2) { Jim_WrongNumArgs(interp, 1, argv, "reference"); return JIM_ERR; } if ((refPtr = Jim_GetReference(interp, argv[1])) == NULL) return JIM_ERR; Jim_SetResult(interp, refPtr->objPtr); return JIM_OK; } /* [setref] */ static int Jim_SetrefCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { Jim_Reference *refPtr; if (argc != 3) { Jim_WrongNumArgs(interp, 1, argv, "reference newValue"); return JIM_ERR; } if ((refPtr = Jim_GetReference(interp, argv[1])) == NULL) return JIM_ERR; Jim_IncrRefCount(argv[2]); Jim_DecrRefCount(interp, refPtr->objPtr); refPtr->objPtr = argv[2]; Jim_SetResult(interp, argv[2]); return JIM_OK; } /* [collect] */ static int Jim_CollectCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { if (argc != 1) { Jim_WrongNumArgs(interp, 1, argv, ""); return JIM_ERR; } Jim_SetResultInt(interp, Jim_Collect(interp)); return JIM_OK; } /* [finalize] reference ?newValue? */ static int Jim_FinalizeCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { if (argc != 2 && argc != 3) { Jim_WrongNumArgs(interp, 1, argv, "reference ?finalizerProc?"); return JIM_ERR; } if (argc == 2) { Jim_Obj *cmdNamePtr; if (Jim_GetFinalizer(interp, argv[1], &cmdNamePtr) != JIM_OK) return JIM_ERR; if (cmdNamePtr != NULL) /* otherwise the null string is returned. */ Jim_SetResult(interp, cmdNamePtr); } else { if (Jim_SetFinalizer(interp, argv[1], argv[2]) != JIM_OK) return JIM_ERR; Jim_SetResult(interp, argv[2]); } return JIM_OK; } /* [info references] */ static int JimInfoReferences(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { Jim_Obj *listObjPtr; Jim_HashTableIterator *htiter; Jim_HashEntry *he; listObjPtr = Jim_NewListObj(interp, NULL, 0); htiter = Jim_GetHashTableIterator(&interp->references); while ((he = Jim_NextHashEntry(htiter)) != NULL) { char buf[JIM_REFERENCE_SPACE]; Jim_Reference *refPtr = he->val; const jim_wide *refId = he->key; JimFormatReference(buf, refPtr, *refId); Jim_ListAppendElement(interp, listObjPtr, Jim_NewStringObj(interp, buf, -1)); } Jim_FreeHashTableIterator(htiter); Jim_SetResult(interp, listObjPtr); return JIM_OK; } #endif /* [rename] */ static int Jim_RenameCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { const char *oldName, *newName; if (argc != 3) { Jim_WrongNumArgs(interp, 1, argv, "oldName newName"); return JIM_ERR; } if (Jim_ValidName(interp, "new procedure", argv[2])) { return JIM_ERR; } oldName = Jim_GetString(argv[1], NULL); newName = Jim_GetString(argv[2], NULL); return Jim_RenameCommand(interp, oldName, newName); } int Jim_DictKeys(Jim_Interp *interp, Jim_Obj *objPtr, Jim_Obj *patternObj) { int i; int len; Jim_Obj *resultObj; Jim_Obj *dictObj; Jim_Obj **dictValuesObj; if (Jim_DictKeysVector(interp, objPtr, NULL, 0, &dictObj, JIM_ERRMSG) != JIM_OK) { return JIM_ERR; } /* XXX: Could make the exact-match case much more efficient here. * See JimCommandsList() */ if (Jim_DictPairs(interp, dictObj, &dictValuesObj, &len) != JIM_OK) { return JIM_ERR; } /* Only return the matching values */ resultObj = Jim_NewListObj(interp, NULL, 0); for (i = 0; i < len; i += 2) { if (patternObj == NULL || Jim_StringMatchObj(interp, patternObj, dictValuesObj[i], 0)) { Jim_ListAppendElement(interp, resultObj, dictValuesObj[i]); } } Jim_Free(dictValuesObj); Jim_SetResult(interp, resultObj); return JIM_OK; } int Jim_DictSize(Jim_Interp *interp, Jim_Obj *objPtr) { if (SetDictFromAny(interp, objPtr) != JIM_OK) { return -1; } return ((Jim_HashTable *)objPtr->internalRep.ptr)->used; } /* [dict] */ static int Jim_DictCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { Jim_Obj *objPtr; int option; const char *options[] = { "create", "get", "set", "unset", "exists", "keys", "merge", "size", "with", NULL }; enum { OPT_CREATE, OPT_GET, OPT_SET, OPT_UNSET, OPT_EXIST, OPT_KEYS, OPT_MERGE, OPT_SIZE, OPT_WITH, }; if (argc < 2) { Jim_WrongNumArgs(interp, 1, argv, "subcommand ?arguments ...?"); return JIM_ERR; } if (Jim_GetEnum(interp, argv[1], options, &option, "subcommand", JIM_ERRMSG) != JIM_OK) { return JIM_ERR; } switch (option) { case OPT_GET: if (argc < 3) { Jim_WrongNumArgs(interp, 2, argv, "varName ?key ...?"); return JIM_ERR; } if (Jim_DictKeysVector(interp, argv[2], argv + 3, argc - 3, &objPtr, JIM_ERRMSG) != JIM_OK) { return JIM_ERR; } Jim_SetResult(interp, objPtr); return JIM_OK; case OPT_SET: if (argc < 5) { Jim_WrongNumArgs(interp, 2, argv, "varName key ?key ...? value"); return JIM_ERR; } return Jim_SetDictKeysVector(interp, argv[2], argv + 3, argc - 4, argv[argc - 1]); case OPT_EXIST: if (argc < 3) { Jim_WrongNumArgs(interp, 2, argv, "varName ?key ...?"); return JIM_ERR; } Jim_SetResultBool(interp, Jim_DictKeysVector(interp, argv[2], argv + 3, argc - 3, &objPtr, JIM_ERRMSG) == JIM_OK); return JIM_OK; case OPT_UNSET: if (argc < 4) { Jim_WrongNumArgs(interp, 2, argv, "varName key ?key ...?"); return JIM_ERR; } return Jim_SetDictKeysVector(interp, argv[2], argv + 3, argc - 3, NULL); case OPT_KEYS: if (argc != 3 && argc != 4) { Jim_WrongNumArgs(interp, 2, argv, "dictVar ?pattern?"); return JIM_ERR; } return Jim_DictKeys(interp, argv[2], argc == 4 ? argv[3] : NULL); case OPT_SIZE: { int size; if (argc != 3) { Jim_WrongNumArgs(interp, 2, argv, "dictVar"); return JIM_ERR; } size = Jim_DictSize(interp, argv[2]); if (size < 0) { return JIM_ERR; } Jim_SetResultInt(interp, size); return JIM_OK; } case OPT_MERGE: if (argc == 2) { return JIM_OK; } else if (argv[2]->typePtr != &dictObjType && SetDictFromAny(interp, argv[2]) != JIM_OK) { return JIM_ERR; } else { return Jim_EvalObjPrefix(interp, "dict merge", argc - 2, argv + 2); } case OPT_WITH: if (argc < 4) { Jim_WrongNumArgs(interp, 2, argv, "dictVar ?key ...? script"); return JIM_ERR; } else if (Jim_GetVariable(interp, argv[2], JIM_ERRMSG) == NULL) { return JIM_ERR; } else { return Jim_EvalObjPrefix(interp, "dict with", argc - 2, argv + 2); } case OPT_CREATE: if (argc % 2) { Jim_WrongNumArgs(interp, 2, argv, "?key value ...?"); return JIM_ERR; } objPtr = Jim_NewDictObj(interp, argv + 2, argc - 2); Jim_SetResult(interp, objPtr); return JIM_OK; default: abort(); } } /* [subst] */ static int Jim_SubstCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { const char *options[] = { "-nobackslashes", "-nocommands", "-novariables", NULL }; enum { OPT_NOBACKSLASHES, OPT_NOCOMMANDS, OPT_NOVARIABLES }; int i; int flags = JIM_SUBST_FLAG; Jim_Obj *objPtr; if (argc < 2) { Jim_WrongNumArgs(interp, 1, argv, "?options? string"); return JIM_ERR; } for (i = 1; i < (argc - 1); i++) { int option; if (Jim_GetEnum(interp, argv[i], options, &option, NULL, JIM_ERRMSG | JIM_ENUM_ABBREV) != JIM_OK) { return JIM_ERR; } switch (option) { case OPT_NOBACKSLASHES: flags |= JIM_SUBST_NOESC; break; case OPT_NOCOMMANDS: flags |= JIM_SUBST_NOCMD; break; case OPT_NOVARIABLES: flags |= JIM_SUBST_NOVAR; break; } } if (Jim_SubstObj(interp, argv[argc - 1], &objPtr, flags) != JIM_OK) { return JIM_ERR; } Jim_SetResult(interp, objPtr); return JIM_OK; } /* [info] */ static int Jim_InfoCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { int cmd; Jim_Obj *objPtr; int mode = 0; static const char * const commands[] = { "body", "commands", "procs", "channels", "exists", "globals", "level", "frame", "locals", "vars", "version", "patchlevel", "complete", "args", "hostname", "script", "source", "stacktrace", "nameofexecutable", "returncodes", "references", NULL }; enum { INFO_BODY, INFO_COMMANDS, INFO_PROCS, INFO_CHANNELS, INFO_EXISTS, INFO_GLOBALS, INFO_LEVEL, INFO_FRAME, INFO_LOCALS, INFO_VARS, INFO_VERSION, INFO_PATCHLEVEL, INFO_COMPLETE, INFO_ARGS, INFO_HOSTNAME, INFO_SCRIPT, INFO_SOURCE, INFO_STACKTRACE, INFO_NAMEOFEXECUTABLE, INFO_RETURNCODES, INFO_REFERENCES, }; if (argc < 2) { Jim_WrongNumArgs(interp, 1, argv, "subcommand ?args ...?"); return JIM_ERR; } if (Jim_GetEnum(interp, argv[1], commands, &cmd, "subcommand", JIM_ERRMSG | JIM_ENUM_ABBREV) != JIM_OK) { return JIM_ERR; } /* Test for the the most common commands first, just in case it makes a difference */ switch (cmd) { case INFO_EXISTS:{ if (argc != 3) { Jim_WrongNumArgs(interp, 2, argv, "varName"); return JIM_ERR; } Jim_SetResultBool(interp, Jim_GetVariable(interp, argv[2], 0) != NULL); break; } case INFO_CHANNELS: #ifndef jim_ext_aio Jim_SetResultString(interp, "aio not enabled", -1); return JIM_ERR; #endif case INFO_COMMANDS: case INFO_PROCS: if (argc != 2 && argc != 3) { Jim_WrongNumArgs(interp, 2, argv, "?pattern?"); return JIM_ERR; } Jim_SetResult(interp, JimCommandsList(interp, (argc == 3) ? argv[2] : NULL, (cmd - INFO_COMMANDS))); break; case INFO_VARS: mode++; /* JIM_VARLIST_VARS */ case INFO_LOCALS: mode++; /* JIM_VARLIST_LOCALS */ case INFO_GLOBALS: /* mode 0 => JIM_VARLIST_GLOBALS */ if (argc != 2 && argc != 3) { Jim_WrongNumArgs(interp, 2, argv, "?pattern?"); return JIM_ERR; } Jim_SetResult(interp, JimVariablesList(interp, argc == 3 ? argv[2] : NULL, mode)); break; case INFO_SCRIPT: if (argc != 2) { Jim_WrongNumArgs(interp, 2, argv, ""); return JIM_ERR; } Jim_SetResultString(interp, Jim_GetScript(interp, interp->currentScriptObj)->fileName, -1); break; case INFO_SOURCE:{ const char *filename = ""; int line = 0; Jim_Obj *resObjPtr; if (argc != 3) { Jim_WrongNumArgs(interp, 2, argv, "source"); return JIM_ERR; } if (argv[2]->typePtr == &sourceObjType) { filename = argv[2]->internalRep.sourceValue.fileName; line = argv[2]->internalRep.sourceValue.lineNumber; } else if (argv[2]->typePtr == &scriptObjType) { ScriptObj *script = Jim_GetScript(interp, argv[2]); filename = script->fileName; line = script->line; } resObjPtr = Jim_NewListObj(interp, NULL, 0); Jim_ListAppendElement(interp, resObjPtr, Jim_NewStringObj(interp, filename, -1)); Jim_ListAppendElement(interp, resObjPtr, Jim_NewIntObj(interp, line)); Jim_SetResult(interp, resObjPtr); break; } case INFO_STACKTRACE: Jim_SetResult(interp, interp->stackTrace); break; case INFO_LEVEL: case INFO_FRAME: switch (argc) { case 2: Jim_SetResultInt(interp, interp->framePtr->level); break; case 3: if (JimInfoLevel(interp, argv[2], &objPtr, cmd == INFO_LEVEL) != JIM_OK) { return JIM_ERR; } Jim_SetResult(interp, objPtr); break; default: Jim_WrongNumArgs(interp, 2, argv, "?levelNum?"); return JIM_ERR; } break; case INFO_BODY: case INFO_ARGS:{ Jim_Cmd *cmdPtr; if (argc != 3) { Jim_WrongNumArgs(interp, 2, argv, "procname"); return JIM_ERR; } if ((cmdPtr = Jim_GetCommand(interp, argv[2], JIM_ERRMSG)) == NULL) { return JIM_ERR; } if (cmdPtr->cmdProc != NULL) { Jim_SetResultFormatted(interp, "command \"%#s\" is not a procedure", argv[2]); return JIM_ERR; } Jim_SetResult(interp, cmd == INFO_BODY ? cmdPtr->bodyObjPtr : cmdPtr->argListObjPtr); break; } case INFO_VERSION: case INFO_PATCHLEVEL:{ char buf[(JIM_INTEGER_SPACE * 2) + 1]; sprintf(buf, "%d.%d", JIM_VERSION / 100, JIM_VERSION % 100); Jim_SetResultString(interp, buf, -1); break; } case INFO_COMPLETE: if (argc != 3) { Jim_WrongNumArgs(interp, 2, argv, "script"); return JIM_ERR; } else { int len; const char *s = Jim_GetString(argv[2], &len); Jim_SetResultBool(interp, Jim_ScriptIsComplete(s, len, NULL)); } break; case INFO_HOSTNAME: /* Redirect to os.gethostname if it exists */ return Jim_Eval(interp, "os.gethostname"); case INFO_NAMEOFEXECUTABLE: /* Redirect to Tcl proc */ return Jim_Eval(interp, "{info nameofexecutable}"); case INFO_RETURNCODES: if (argc == 2) { int i; Jim_Obj *listObjPtr = Jim_NewListObj(interp, NULL, 0); for (i = 0; jimReturnCodes[i]; i++) { Jim_ListAppendElement(interp, listObjPtr, Jim_NewIntObj(interp, i)); Jim_ListAppendElement(interp, listObjPtr, Jim_NewStringObj(interp, jimReturnCodes[i], -1)); } Jim_SetResult(interp, listObjPtr); } else if (argc == 3) { long code; const char *name; if (Jim_GetLong(interp, argv[2], &code) != JIM_OK) { return JIM_ERR; } name = Jim_ReturnCode(code); if (*name == '?') { Jim_SetResultInt(interp, code); } else { Jim_SetResultString(interp, name, -1); } } else { Jim_WrongNumArgs(interp, 2, argv, "?code?"); return JIM_ERR; } break; case INFO_REFERENCES: #ifdef JIM_REFERENCES return JimInfoReferences(interp, argc, argv); #else Jim_SetResultString(interp, "not supported", -1); return JIM_ERR; #endif } return JIM_OK; } /* [exists] */ static int Jim_ExistsCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { Jim_Obj *objPtr; static const char * const options[] = { "-command", "-proc", "-var", NULL }; enum { OPT_COMMAND, OPT_PROC, OPT_VAR }; int option; if (argc == 2) { option = OPT_VAR; objPtr = argv[1]; } else if (argc == 3) { if (Jim_GetEnum(interp, argv[1], options, &option, NULL, JIM_ERRMSG | JIM_ENUM_ABBREV) != JIM_OK) { return JIM_ERR; } objPtr = argv[2]; } else { Jim_WrongNumArgs(interp, 1, argv, "?option? name"); return JIM_ERR; } /* Test for the the most common commands first, just in case it makes a difference */ switch (option) { case OPT_VAR: Jim_SetResultBool(interp, Jim_GetVariable(interp, objPtr, 0) != NULL); break; case OPT_COMMAND: case OPT_PROC: { Jim_Cmd *cmd = Jim_GetCommand(interp, objPtr, JIM_NONE); Jim_SetResultBool(interp, cmd != NULL && (option == OPT_COMMAND || !cmd->cmdProc)); break; } } return JIM_OK; } /* [split] */ static int Jim_SplitCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { const char *str, *splitChars, *noMatchStart; int splitLen, strLen; Jim_Obj *resObjPtr; int c; int len; if (argc != 2 && argc != 3) { Jim_WrongNumArgs(interp, 1, argv, "string ?splitChars?"); return JIM_ERR; } str = Jim_GetString(argv[1], &len); if (len == 0) { return JIM_OK; } strLen = Jim_Utf8Length(interp, argv[1]); /* Init */ if (argc == 2) { splitChars = " \n\t\r"; splitLen = 4; } else { splitChars = Jim_GetString(argv[2], NULL); splitLen = Jim_Utf8Length(interp, argv[2]); } noMatchStart = str; resObjPtr = Jim_NewListObj(interp, NULL, 0); /* Split */ if (splitLen) { Jim_Obj *objPtr; while (strLen--) { const char *sc = splitChars; int scLen = splitLen; int sl = utf8_tounicode(str, &c); while (scLen--) { int pc; sc += utf8_tounicode(sc, &pc); if (c == pc) { objPtr = Jim_NewStringObj(interp, noMatchStart, (str - noMatchStart)); Jim_ListAppendElement(interp, resObjPtr, objPtr); noMatchStart = str + sl; break; } } str += sl; } objPtr = Jim_NewStringObj(interp, noMatchStart, (str - noMatchStart)); Jim_ListAppendElement(interp, resObjPtr, objPtr); } else { /* This handles the special case of splitchars eq {} * Optimise by sharing common (ASCII) characters */ Jim_Obj **commonObj = NULL; #define NUM_COMMON (128 - 32) while (strLen--) { int n = utf8_tounicode(str, &c); #ifdef JIM_OPTIMIZATION if (c >= 32 && c < 128) { /* Common ASCII char */ c -= 32; if (!commonObj) { commonObj = Jim_Alloc(sizeof(*commonObj) * NUM_COMMON); memset(commonObj, 0, sizeof(*commonObj) * NUM_COMMON); } if (!commonObj[c]) { commonObj[c] = Jim_NewStringObj(interp, str, 1); } Jim_ListAppendElement(interp, resObjPtr, commonObj[c]); str++; continue; } #endif Jim_ListAppendElement(interp, resObjPtr, Jim_NewStringObjUtf8(interp, str, 1)); str += n; } Jim_Free(commonObj); } Jim_SetResult(interp, resObjPtr); return JIM_OK; } /* [join] */ static int Jim_JoinCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { const char *joinStr; int joinStrLen, i, listLen; Jim_Obj *resObjPtr; if (argc != 2 && argc != 3) { Jim_WrongNumArgs(interp, 1, argv, "list ?joinString?"); return JIM_ERR; } /* Init */ if (argc == 2) { joinStr = " "; joinStrLen = 1; } else { joinStr = Jim_GetString(argv[2], &joinStrLen); } listLen = Jim_ListLength(interp, argv[1]); resObjPtr = Jim_NewStringObj(interp, NULL, 0); /* Split */ for (i = 0; i < listLen; i++) { Jim_Obj *objPtr = 0; Jim_ListIndex(interp, argv[1], i, &objPtr, JIM_NONE); Jim_AppendObj(interp, resObjPtr, objPtr); if (i + 1 != listLen) { Jim_AppendString(interp, resObjPtr, joinStr, joinStrLen); } } Jim_SetResult(interp, resObjPtr); return JIM_OK; } /* [format] */ static int Jim_FormatCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { Jim_Obj *objPtr; if (argc < 2) { Jim_WrongNumArgs(interp, 1, argv, "formatString ?arg arg ...?"); return JIM_ERR; } objPtr = Jim_FormatString(interp, argv[1], argc - 2, argv + 2); if (objPtr == NULL) return JIM_ERR; Jim_SetResult(interp, objPtr); return JIM_OK; } /* [scan] */ static int Jim_ScanCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { Jim_Obj *listPtr, **outVec; int outc, i; if (argc < 3) { Jim_WrongNumArgs(interp, 1, argv, "string format ?varName varName ...?"); return JIM_ERR; } if (argv[2]->typePtr != &scanFmtStringObjType) SetScanFmtFromAny(interp, argv[2]); if (FormatGetError(argv[2]) != 0) { Jim_SetResultString(interp, FormatGetError(argv[2]), -1); return JIM_ERR; } if (argc > 3) { int maxPos = FormatGetMaxPos(argv[2]); int count = FormatGetCnvCount(argv[2]); if (maxPos > argc - 3) { Jim_SetResultString(interp, "\"%n$\" argument index out of range", -1); return JIM_ERR; } else if (count > argc - 3) { Jim_SetResultString(interp, "different numbers of variable names and " "field specifiers", -1); return JIM_ERR; } else if (count < argc - 3) { Jim_SetResultString(interp, "variable is not assigned by any " "conversion specifiers", -1); return JIM_ERR; } } listPtr = Jim_ScanString(interp, argv[1], argv[2], JIM_ERRMSG); if (listPtr == 0) return JIM_ERR; if (argc > 3) { int rc = JIM_OK; int count = 0; if (listPtr != 0 && listPtr != (Jim_Obj *)EOF) { int len = Jim_ListLength(interp, listPtr); if (len != 0) { JimListGetElements(interp, listPtr, &outc, &outVec); for (i = 0; i < outc; ++i) { if (Jim_Length(outVec[i]) > 0) { ++count; if (Jim_SetVariable(interp, argv[3 + i], outVec[i]) != JIM_OK) { rc = JIM_ERR; } } } } Jim_FreeNewObj(interp, listPtr); } else { count = -1; } if (rc == JIM_OK) { Jim_SetResultInt(interp, count); } return rc; } else { if (listPtr == (Jim_Obj *)EOF) { Jim_SetResult(interp, Jim_NewListObj(interp, 0, 0)); return JIM_OK; } Jim_SetResult(interp, listPtr); } return JIM_OK; } /* [error] */ static int Jim_ErrorCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { if (argc != 2 && argc != 3) { Jim_WrongNumArgs(interp, 1, argv, "message ?stacktrace?"); return JIM_ERR; } Jim_SetResult(interp, argv[1]); if (argc == 3) { JimSetStackTrace(interp, argv[2]); return JIM_ERR; } interp->addStackTrace++; return JIM_ERR; } /* [lrange] */ static int Jim_LrangeCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { Jim_Obj *objPtr; if (argc != 4) { Jim_WrongNumArgs(interp, 1, argv, "list first last"); return JIM_ERR; } if ((objPtr = Jim_ListRange(interp, argv[1], argv[2], argv[3])) == NULL) return JIM_ERR; Jim_SetResult(interp, objPtr); return JIM_OK; } /* [lrepeat] */ static int Jim_LrepeatCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { Jim_Obj *objPtr; long count; if (argc < 2 || Jim_GetLong(interp, argv[1], &count) != JIM_OK || count < 0) { Jim_WrongNumArgs(interp, 1, argv, "count ?value ...?"); return JIM_ERR; } if (count == 0 || argc == 2) { return JIM_OK; } argc -= 2; argv += 2; objPtr = Jim_NewListObj(interp, argv, argc); while (--count) { int i; for (i = 0; i < argc; i++) { ListAppendElement(objPtr, argv[i]); } } Jim_SetResult(interp, objPtr); return JIM_OK; } /* [env] */ static int Jim_EnvCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { const char *key; const char *val; if (argc == 1) { #ifndef NO_ENVIRON_EXTERN extern char **environ; #endif int i; Jim_Obj *listObjPtr = Jim_NewListObj(interp, NULL, 0); for (i = 0; environ[i]; i++) { const char *equals = strchr(environ[i], '='); if (equals) { Jim_ListAppendElement(interp, listObjPtr, Jim_NewStringObj(interp, environ[i], equals - environ[i])); Jim_ListAppendElement(interp, listObjPtr, Jim_NewStringObj(interp, equals + 1, -1)); } } Jim_SetResult(interp, listObjPtr); return JIM_OK; } if (argc < 2) { Jim_WrongNumArgs(interp, 1, argv, "varName ?default?"); return JIM_ERR; } key = Jim_GetString(argv[1], NULL); val = getenv(key); if (val == NULL) { if (argc < 3) { Jim_SetResultFormatted(interp, "environment variable \"%#s\" does not exist", argv[1]); return JIM_ERR; } val = Jim_GetString(argv[2], NULL); } Jim_SetResult(interp, Jim_NewStringObj(interp, val, -1)); return JIM_OK; } /* [source] */ static int Jim_SourceCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { int retval; if (argc != 2) { Jim_WrongNumArgs(interp, 1, argv, "fileName"); return JIM_ERR; } retval = Jim_EvalFile(interp, Jim_GetString(argv[1], NULL)); if (retval == JIM_RETURN) return JIM_OK; return retval; } /* [lreverse] */ static int Jim_LreverseCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { Jim_Obj *revObjPtr, **ele; int len; if (argc != 2) { Jim_WrongNumArgs(interp, 1, argv, "list"); return JIM_ERR; } JimListGetElements(interp, argv[1], &len, &ele); len--; revObjPtr = Jim_NewListObj(interp, NULL, 0); while (len >= 0) ListAppendElement(revObjPtr, ele[len--]); Jim_SetResult(interp, revObjPtr); return JIM_OK; } static int JimRangeLen(jim_wide start, jim_wide end, jim_wide step) { jim_wide len; if (step == 0) return -1; if (start == end) return 0; else if (step > 0 && start > end) return -1; else if (step < 0 && end > start) return -1; len = end - start; if (len < 0) len = -len; /* abs(len) */ if (step < 0) step = -step; /* abs(step) */ len = 1 + ((len - 1) / step); /* We can truncate safely to INT_MAX, the range command * will always return an error for a such long range * because Tcl lists can't be so long. */ if (len > INT_MAX) len = INT_MAX; return (int)((len < 0) ? -1 : len); } /* [range] */ static int Jim_RangeCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { jim_wide start = 0, end, step = 1; int len, i; Jim_Obj *objPtr; if (argc < 2 || argc > 4) { Jim_WrongNumArgs(interp, 1, argv, "?start? end ?step?"); return JIM_ERR; } if (argc == 2) { if (Jim_GetWide(interp, argv[1], &end) != JIM_OK) return JIM_ERR; } else { if (Jim_GetWide(interp, argv[1], &start) != JIM_OK || Jim_GetWide(interp, argv[2], &end) != JIM_OK) return JIM_ERR; if (argc == 4 && Jim_GetWide(interp, argv[3], &step) != JIM_OK) return JIM_ERR; } if ((len = JimRangeLen(start, end, step)) == -1) { Jim_SetResultString(interp, "Invalid (infinite?) range specified", -1); return JIM_ERR; } objPtr = Jim_NewListObj(interp, NULL, 0); for (i = 0; i < len; i++) ListAppendElement(objPtr, Jim_NewIntObj(interp, start + i * step)); Jim_SetResult(interp, objPtr); return JIM_OK; } /* [rand] */ static int Jim_RandCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { jim_wide min = 0, max = 0, len, maxMul; if (argc < 1 || argc > 3) { Jim_WrongNumArgs(interp, 1, argv, "?min? max"); return JIM_ERR; } if (argc == 1) { max = JIM_WIDE_MAX; } else if (argc == 2) { if (Jim_GetWide(interp, argv[1], &max) != JIM_OK) return JIM_ERR; } else if (argc == 3) { if (Jim_GetWide(interp, argv[1], &min) != JIM_OK || Jim_GetWide(interp, argv[2], &max) != JIM_OK) return JIM_ERR; } len = max-min; if (len < 0) { Jim_SetResultString(interp, "Invalid arguments (max < min)", -1); return JIM_ERR; } maxMul = JIM_WIDE_MAX - (len ? (JIM_WIDE_MAX%len) : 0); while (1) { jim_wide r; JimRandomBytes(interp, &r, sizeof(jim_wide)); if (r < 0 || r >= maxMul) continue; r = (len == 0) ? 0 : r%len; Jim_SetResultInt(interp, min+r); return JIM_OK; } } static const struct { const char *name; Jim_CmdProc cmdProc; } Jim_CoreCommandsTable[] = { {"set", Jim_SetCoreCommand}, {"unset", Jim_UnsetCoreCommand}, {"puts", Jim_PutsCoreCommand}, {"+", Jim_AddCoreCommand}, {"*", Jim_MulCoreCommand}, {"-", Jim_SubCoreCommand}, {"/", Jim_DivCoreCommand}, {"incr", Jim_IncrCoreCommand}, {"while", Jim_WhileCoreCommand}, {"for", Jim_ForCoreCommand}, {"foreach", Jim_ForeachCoreCommand}, {"lmap", Jim_LmapCoreCommand}, {"if", Jim_IfCoreCommand}, {"switch", Jim_SwitchCoreCommand}, {"list", Jim_ListCoreCommand}, {"lindex", Jim_LindexCoreCommand}, {"lset", Jim_LsetCoreCommand}, {"lsearch", Jim_LsearchCoreCommand}, {"llength", Jim_LlengthCoreCommand}, {"lappend", Jim_LappendCoreCommand}, {"linsert", Jim_LinsertCoreCommand}, {"lreplace", Jim_LreplaceCoreCommand}, {"lsort", Jim_LsortCoreCommand}, {"append", Jim_AppendCoreCommand}, {"debug", Jim_DebugCoreCommand}, {"eval", Jim_EvalCoreCommand}, {"uplevel", Jim_UplevelCoreCommand}, {"expr", Jim_ExprCoreCommand}, {"break", Jim_BreakCoreCommand}, {"continue", Jim_ContinueCoreCommand}, {"proc", Jim_ProcCoreCommand}, {"concat", Jim_ConcatCoreCommand}, {"return", Jim_ReturnCoreCommand}, {"upvar", Jim_UpvarCoreCommand}, {"global", Jim_GlobalCoreCommand}, {"string", Jim_StringCoreCommand}, {"time", Jim_TimeCoreCommand}, {"exit", Jim_ExitCoreCommand}, {"catch", Jim_CatchCoreCommand}, #ifdef JIM_REFERENCES {"ref", Jim_RefCoreCommand}, {"getref", Jim_GetrefCoreCommand}, {"setref", Jim_SetrefCoreCommand}, {"finalize", Jim_FinalizeCoreCommand}, {"collect", Jim_CollectCoreCommand}, #endif {"rename", Jim_RenameCoreCommand}, {"dict", Jim_DictCoreCommand}, {"subst", Jim_SubstCoreCommand}, {"info", Jim_InfoCoreCommand}, {"exists", Jim_ExistsCoreCommand}, {"split", Jim_SplitCoreCommand}, {"join", Jim_JoinCoreCommand}, {"format", Jim_FormatCoreCommand}, {"scan", Jim_ScanCoreCommand}, {"error", Jim_ErrorCoreCommand}, {"lrange", Jim_LrangeCoreCommand}, {"lrepeat", Jim_LrepeatCoreCommand}, {"env", Jim_EnvCoreCommand}, {"source", Jim_SourceCoreCommand}, {"lreverse", Jim_LreverseCoreCommand}, {"range", Jim_RangeCoreCommand}, {"rand", Jim_RandCoreCommand}, {"tailcall", Jim_TailcallCoreCommand}, {"local", Jim_LocalCoreCommand}, {NULL, NULL}, }; void Jim_RegisterCoreCommands(Jim_Interp *interp) { int i = 0; while (Jim_CoreCommandsTable[i].name != NULL) { Jim_CreateCommand(interp, Jim_CoreCommandsTable[i].name, Jim_CoreCommandsTable[i].cmdProc, NULL, NULL); i++; } } /* ----------------------------------------------------------------------------- * Interactive prompt * ---------------------------------------------------------------------------*/ void Jim_MakeErrorMessage(Jim_Interp *interp) { Jim_Obj *argv[2]; argv[0] = Jim_NewStringObj(interp, "errorInfo", -1); argv[1] = interp->result; Jim_EvalObjVector(interp, 2, argv); } static void JimSetFailedEnumResult(Jim_Interp *interp, const char *arg, const char *badtype, const char *prefix, const char *const *tablePtr, const char *name) { int count; char **tablePtrSorted; int i; for (count = 0; tablePtr[count]; count++) { } if (name == NULL) { name = "option"; } Jim_SetResultFormatted(interp, "%s%s \"%s\": must be ", badtype, name, arg); tablePtrSorted = Jim_Alloc(sizeof(char *) * count); memcpy(tablePtrSorted, tablePtr, sizeof(char *) * count); qsort(tablePtrSorted, count, sizeof(char *), qsortCompareStringPointers); for (i = 0; i < count; i++) { if (i + 1 == count && count > 1) { Jim_AppendString(interp, Jim_GetResult(interp), "or ", -1); } Jim_AppendStrings(interp, Jim_GetResult(interp), prefix, tablePtrSorted[i], NULL); if (i + 1 != count) { Jim_AppendString(interp, Jim_GetResult(interp), ", ", -1); } } Jim_Free(tablePtrSorted); } int Jim_GetEnum(Jim_Interp *interp, Jim_Obj *objPtr, const char *const *tablePtr, int *indexPtr, const char *name, int flags) { const char *bad = "bad "; const char *const *entryPtr = NULL; int i; int match = -1; int arglen; const char *arg = Jim_GetString(objPtr, &arglen); *indexPtr = -1; for (entryPtr = tablePtr, i = 0; *entryPtr != NULL; entryPtr++, i++) { if (Jim_CompareStringImmediate(interp, objPtr, *entryPtr)) { /* Found an exact match */ *indexPtr = i; return JIM_OK; } if (flags & JIM_ENUM_ABBREV) { /* Accept an unambiguous abbreviation. * Note that '-' doesnt' consitute a valid abbreviation */ if (strncmp(arg, *entryPtr, arglen) == 0) { if (*arg == '-' && arglen == 1) { break; } if (match >= 0) { bad = "ambiguous "; goto ambiguous; } match = i; } } } /* If we had an unambiguous partial match */ if (match >= 0) { *indexPtr = match; return JIM_OK; } ambiguous: if (flags & JIM_ERRMSG) { JimSetFailedEnumResult(interp, arg, bad, "", tablePtr, name); } return JIM_ERR; } int Jim_FindByName(const char *name, const char * const array[], size_t len) { int i; for (i = 0; i < (int)len; i++) { if (array[i] && strcmp(array[i], name) == 0) { return i; } } return -1; } int Jim_IsDict(Jim_Obj *objPtr) { return objPtr->typePtr == &dictObjType; } int Jim_IsList(Jim_Obj *objPtr) { return objPtr->typePtr == &listObjType; } /** * Very simple printf-like formatting, designed for error messages. * * The format may contain up to 5 '%s' or '%#s', corresponding to variable arguments. * The resulting string is created and set as the result. * * Each '%s' should correspond to a regular string parameter. * Each '%#s' should correspond to a (Jim_Obj *) parameter. * Any other printf specifier is not allowed (but %% is allowed for the % character). * * e.g. Jim_SetResultFormatted(interp, "Bad option \"%#s\" in proc \"%#s\"", optionObjPtr, procNamePtr); * * Note: We take advantage of the fact that printf has the same behaviour for both %s and %#s */ void Jim_SetResultFormatted(Jim_Interp *interp, const char *format, ...) { /* Initial space needed */ int len = strlen(format); int extra = 0; int n = 0; const char *params[5]; char *buf; va_list args; int i; va_start(args, format); for (i = 0; i < len && n < 5; i++) { int l; if (strncmp(format + i, "%s", 2) == 0) { params[n] = va_arg(args, char *); l = strlen(params[n]); } else if (strncmp(format + i, "%#s", 3) == 0) { Jim_Obj *objPtr = va_arg(args, Jim_Obj *); params[n] = Jim_GetString(objPtr, &l); } else { if (format[i] == '%') { i++; } continue; } n++; extra += l; } len += extra; buf = Jim_Alloc(len + 1); len = snprintf(buf, len + 1, format, params[0], params[1], params[2], params[3], params[4]); Jim_SetResult(interp, Jim_NewStringObjNoAlloc(interp, buf, len)); } /* stubs */ #ifndef jim_ext_package int Jim_PackageProvide(Jim_Interp *interp, const char *name, const char *ver, int flags) { return JIM_OK; } #endif #ifndef jim_ext_aio FILE *Jim_AioFilehandle(Jim_Interp *interp, Jim_Obj *fhObj) { Jim_SetResultString(interp, "aio not enabled", -1); return NULL; } #endif /* * Local Variables: *** * c-basic-offset: 4 *** * tab-width: 4 *** * End: *** */