diff options
Diffstat (limited to 'libcpp/include/cpplib.h')
| -rw-r--r-- | libcpp/include/cpplib.h | 97 |
1 files changed, 88 insertions, 9 deletions
diff --git a/libcpp/include/cpplib.h b/libcpp/include/cpplib.h index 8e39886..50d28dc 100644 --- a/libcpp/include/cpplib.h +++ b/libcpp/include/cpplib.h @@ -308,6 +308,15 @@ enum cpp_normalize_level { normalized_none }; +enum cpp_main_search +{ + CMS_none, /* A regular source file. */ + CMS_header, /* Is a directly-specified header file (eg PCH or + header-unit). */ + CMS_user, /* Search the user INCLUDE path. */ + CMS_system, /* Search the system INCLUDE path. */ +}; + /* This structure is nested inside struct cpp_reader, and carries all the options visible to the command line. */ struct cpp_options @@ -487,6 +496,9 @@ struct cpp_options /* Nonzero for the '::' token. */ unsigned char scope; + /* Nonzero means tokenize C++20 module directives. */ + unsigned char module_directives; + /* Holds the name of the target (execution) character set. */ const char *narrow_charset; @@ -528,6 +540,9 @@ struct cpp_options one. */ bool phony_targets; + /* Generate dependency info for modules. */ + bool modules; + /* If true, no dependency is generated on the main file. */ bool ignore_main_file; @@ -560,6 +575,8 @@ struct cpp_options /* The maximum depth of the nested #include. */ unsigned int max_include_depth; + + cpp_main_search main_search : 8; }; /* Diagnostic levels. To get a diagnostic without associating a @@ -672,7 +689,7 @@ struct cpp_callbacks void (*used) (cpp_reader *, location_t, cpp_hashnode *); /* Callback to identify whether an attribute exists. */ - int (*has_attribute) (cpp_reader *); + int (*has_attribute) (cpp_reader *, bool); /* Callback to determine whether a built-in function is recognized. */ int (*has_builtin) (cpp_reader *); @@ -680,6 +697,9 @@ struct cpp_callbacks /* Callback that can change a user lazy into normal macro. */ void (*user_lazy_macro) (cpp_reader *, cpp_macro *, unsigned); + /* Callback to handle deferred cpp_macros. */ + cpp_macro *(*user_deferred_macro) (cpp_reader *, location_t, cpp_hashnode *); + /* Callback to parse SOURCE_DATE_EPOCH from environment. */ time_t (*get_source_date_epoch) (cpp_reader *); @@ -698,6 +718,11 @@ struct cpp_callbacks /* Callback for filename remapping in __FILE__ and __BASE_FILE__ macro expansions. */ const char *(*remap_filename) (const char*); + + /* Maybe translate a #include into something else. Return a + cpp_buffer containing the translation if translating. */ + char *(*translate_include) (cpp_reader *, line_maps *, location_t, + const char *path); }; #ifdef VMS @@ -801,7 +826,10 @@ struct GTY(()) cpp_macro { tokens. */ unsigned int extra_tokens : 1; - /* 1 bits spare (32-bit). 33 on 64-bit target. */ + /* Imported C++20 macro (from a header unit). */ + unsigned int imported_p : 1; + + /* 0 bits spare (32-bit). 32 on 64-bit target. */ union cpp_exp_u { @@ -831,6 +859,7 @@ struct GTY(()) cpp_macro { #define NODE_USED (1 << 5) /* Dumped with -dU. */ #define NODE_CONDITIONAL (1 << 6) /* Conditional macro */ #define NODE_WARN_OPERATOR (1 << 7) /* Warn about C++ named operator. */ +#define NODE_MODULE (1 << 8) /* C++-20 module-related name. */ /* Different flavors of hash node. */ enum node_type @@ -857,6 +886,7 @@ enum cpp_builtin_type BT_TIMESTAMP, /* `__TIMESTAMP__' */ BT_COUNTER, /* `__COUNTER__' */ BT_HAS_ATTRIBUTE, /* `__has_attribute(x)' */ + BT_HAS_STD_ATTRIBUTE, /* `__has_c_attribute(x)' */ BT_HAS_BUILTIN, /* `__has_builtin(x)' */ BT_HAS_INCLUDE, /* `__has_include(x)' */ BT_HAS_INCLUDE_NEXT /* `__has_include_next(x)' */ @@ -874,7 +904,7 @@ enum cpp_builtin_type union GTY(()) _cpp_hashnode_value { /* Assert (maybe NULL) */ cpp_macro * GTY((tag ("NT_VOID"))) answers; - /* Macro (never NULL) */ + /* Macro (maybe NULL) */ cpp_macro * GTY((tag ("NT_USER_MACRO"))) macro; /* Code for a builtin macro. */ enum cpp_builtin_type GTY ((tag ("NT_BUILTIN_MACRO"))) builtin; @@ -888,11 +918,17 @@ struct GTY(()) cpp_hashnode { unsigned int directive_index : 7; /* If is_directive, then index into directive table. Otherwise, a NODE_OPERATOR. */ - unsigned char rid_code; /* Rid code - for front ends. */ + unsigned int rid_code : 8; /* Rid code - for front ends. */ + unsigned int flags : 9; /* CPP flags. */ ENUM_BITFIELD(node_type) type : 2; /* CPP node type. */ - unsigned int flags : 8; /* CPP flags. */ - /* 6 bits spare (plus another 32 on 64-bit hosts). */ + /* 5 bits spare. */ + + /* The deferred cookie is applicable to NT_USER_MACRO or NT_VOID. + The latter for when a macro had a prevailing undef. + On a 64-bit system there would be 32-bits of padding to the value + field. So placing the deferred index here is not costly. */ + unsigned deferred; /* Deferred cookie */ union _cpp_hashnode_value GTY ((desc ("%1.type"))) value; }; @@ -971,6 +1007,14 @@ extern cpp_callbacks *cpp_get_callbacks (cpp_reader *) ATTRIBUTE_PURE; extern void cpp_set_callbacks (cpp_reader *, cpp_callbacks *); extern class mkdeps *cpp_get_deps (cpp_reader *) ATTRIBUTE_PURE; +extern const char *cpp_find_header_unit (cpp_reader *, const char *file, + bool angle_p, location_t); + +/* Call these to get name data about the various compile-time + charsets. */ +extern const char *cpp_get_narrow_charset_name (cpp_reader *) ATTRIBUTE_PURE; +extern const char *cpp_get_wide_charset_name (cpp_reader *) ATTRIBUTE_PURE; + /* This function reads the file, but does not start preprocessing. It returns the name of the original file; this is the same as the input file, except for preprocessed input. This will generate at @@ -978,6 +1022,10 @@ extern class mkdeps *cpp_get_deps (cpp_reader *) ATTRIBUTE_PURE; too. If there was an error opening the file, it returns NULL. */ extern const char *cpp_read_main_file (cpp_reader *, const char *, bool injecting = false); +extern location_t cpp_main_loc (const cpp_reader *); + +/* Adjust for the main file to be an include. */ +extern void cpp_retrofit_as_include (cpp_reader *); /* Set up built-ins with special behavior. Use cpp_init_builtins() instead unless your know what you are doing. */ @@ -1027,6 +1075,18 @@ inline bool cpp_macro_p (const cpp_hashnode *node) { return node->type & NT_MACRO_MASK; } +inline cpp_macro *cpp_set_deferred_macro (cpp_hashnode *node, + cpp_macro *forced = NULL) +{ + cpp_macro *old = node->value.macro; + + node->value.macro = forced; + node->type = NT_USER_MACRO; + node->flags &= ~NODE_USED; + + return old; +} +cpp_macro *cpp_get_deferred_macro (cpp_reader *, cpp_hashnode *, location_t); /* Returns true if NODE is a function-like user macro. */ inline bool cpp_fun_like_macro_p (cpp_hashnode *node) @@ -1034,12 +1094,23 @@ inline bool cpp_fun_like_macro_p (cpp_hashnode *node) return cpp_user_macro_p (node) && node->value.macro->fun_like; } -extern const unsigned char *cpp_macro_definition (cpp_reader *, - cpp_hashnode *); +extern const unsigned char *cpp_macro_definition (cpp_reader *, cpp_hashnode *); +extern const unsigned char *cpp_macro_definition (cpp_reader *, cpp_hashnode *, + const cpp_macro *); inline location_t cpp_macro_definition_location (cpp_hashnode *node) { - return node->value.macro->line; + const cpp_macro *macro = node->value.macro; + return macro ? macro->line : 0; } +/* Return an idempotent time stamp (possibly from SOURCE_DATE_EPOCH). */ +enum class CPP_time_kind +{ + FIXED = -1, /* Fixed time via source epoch. */ + DYNAMIC = -2, /* Dynamic via time(2). */ + UNKNOWN = -3 /* Wibbly wobbly, timey wimey. */ +}; +extern CPP_time_kind cpp_get_date (cpp_reader *, time_t *); + extern void _cpp_backup_tokens (cpp_reader *, unsigned int); extern const cpp_token *cpp_peek_token (cpp_reader *, int); @@ -1066,8 +1137,12 @@ extern cppchar_t cpp_host_to_exec_charset (cpp_reader *, cppchar_t); /* Used to register macros and assertions, perhaps from the command line. The text is the same as the command line argument. */ extern void cpp_define (cpp_reader *, const char *); +extern void cpp_define_unused (cpp_reader *, const char *); extern void cpp_define_formatted (cpp_reader *pfile, const char *fmt, ...) ATTRIBUTE_PRINTF_2; +extern void cpp_define_formatted_unused (cpp_reader *pfile, + const char *fmt, + ...) ATTRIBUTE_PRINTF_2; extern void cpp_assert (cpp_reader *, const char *); extern void cpp_undef (cpp_reader *, const char *); extern void cpp_unassert (cpp_reader *, const char *); @@ -1219,6 +1294,8 @@ extern int cpp_ideq (const cpp_token *, const char *); extern void cpp_output_line (cpp_reader *, FILE *); extern unsigned char *cpp_output_line_to_string (cpp_reader *, const unsigned char *); +extern const unsigned char *cpp_alloc_token_string + (cpp_reader *, const unsigned char *, unsigned); extern void cpp_output_token (const cpp_token *, FILE *); extern const char *cpp_type2name (enum cpp_ttype, unsigned char flags); /* Returns the value of an escape sequence, truncated to the correct @@ -1274,6 +1351,8 @@ extern void cpp_scan_nooutput (cpp_reader *); extern int cpp_sys_macro_p (cpp_reader *); extern unsigned char *cpp_quote_string (unsigned char *, const unsigned char *, unsigned int); +extern bool cpp_compare_macros (const cpp_macro *macro1, + const cpp_macro *macro2); /* In files.c */ extern bool cpp_included (cpp_reader *, const char *); |