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authorHans-Peter Nilsson <hp@axis.com>2000-11-15 11:50:21 +0000
committerHans-Peter Nilsson <hp@axis.com>2000-11-15 11:50:21 +0000
commit16e857458e781ae7877022397cb60bb1a1943b23 (patch)
treea968b30e8c613f165efa40da0fe7277d0e4955ec /libiberty/cplus-dem.c
parent4cabd1d10f52296b1c177821614897494ea897fc (diff)
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* cplus_dem.c: Add gnat demangler. Add java to demangle style
list.
Diffstat (limited to 'libiberty/cplus-dem.c')
-rw-r--r--libiberty/cplus-dem.c148
1 files changed, 148 insertions, 0 deletions
diff --git a/libiberty/cplus-dem.c b/libiberty/cplus-dem.c
index 3fe70b4..53549ca 100644
--- a/libiberty/cplus-dem.c
+++ b/libiberty/cplus-dem.c
@@ -52,6 +52,8 @@ char * realloc ();
#include "libiberty.h"
+static char *ada_demangle PARAMS ((const char*, int));
+
#define min(X,Y) (((X) < (Y)) ? (X) : (Y))
/* A value at least one greater than the maximum number of characters
@@ -298,6 +300,18 @@ struct demangler_engine libiberty_demanglers[] =
}
,
{
+ JAVA_DEMANGLING_STYLE_STRING,
+ java_demangling,
+ "Java style demangling"
+ }
+ ,
+ {
+ GNAT_DEMANGLING_STYLE_STRING,
+ gnat_demangling,
+ "GNAT style demangling"
+ }
+ ,
+ {
NULL, unknown_demangling, NULL
}
};
@@ -900,12 +914,146 @@ cplus_demangle (mangled, options)
if (GNU_NEW_ABI_DEMANGLING)
return cplus_demangle_new_abi (mangled);
+ if (GNAT_DEMANGLING)
+ return ada_demangle(mangled,options);
+
ret = internal_cplus_demangle (work, mangled);
squangle_mop_up (work);
return (ret);
}
+/* Assuming *OLD_VECT points to an array of *SIZE objects of size
+ ELEMENT_SIZE, grow it to contain at least MIN_SIZE objects,
+ updating *OLD_VECT and *SIZE as necessary. */
+static void
+DEFUN (grow_vect, (old_vect, size, min_size, element_size),
+ void** old_vect
+ AND size_t* size
+ AND size_t min_size
+ AND int element_size)
+{
+ if (*size < min_size) {
+ *size *= 2;
+ if (*size < min_size)
+ *size = min_size;
+ *old_vect = xrealloc (*old_vect, *size * element_size);
+ }
+}
+
+/* Demangle ada names:
+ 1. Discard final __{DIGIT}+ or ${DIGIT}+
+ 2. Convert other instances of embedded "__" to `.'.
+ 3. Discard leading _ada_.
+ 4. Remove everything after first ___ if it is followed by
+ 'X'.
+ 5. Put symbols that should be suppressed in <...> brackets.
+ The resulting string is valid until the next call of ada_demangle.
+*/
+static char *
+DEFUN (ada_demangle, (mangled, style, option),
+ const char* mangled
+ AND int option ATTRIBUTE_UNUSED)
+{
+ int i, j;
+ int len0;
+ const char* p;
+ char* demangled = NULL;
+ int at_start_name;
+ int changed;
+ char* demangling_buffer = NULL;
+ size_t demangling_buffer_size = 0;
+
+ changed = 0;
+
+ if (strncmp (mangled, "_ada_", 5) == 0)
+ {
+ mangled += 5;
+ changed = 1;
+ }
+
+ if (mangled[0] == '_' || mangled[0] == '<')
+ goto Suppress;
+
+ p = strstr (mangled, "___");
+ if (p == NULL)
+ len0 = strlen (mangled);
+ else
+ {
+ if (p[3] == 'X')
+ {
+ len0 = p - mangled;
+ changed = 1;
+ }
+ else
+ goto Suppress;
+ }
+
+ /* Make demangled big enough for possible expansion by operator name. */
+ grow_vect ((void**) &(demangling_buffer),
+ &demangling_buffer_size, 2 * len0 + 1,
+ sizeof (char));
+ demangled = demangling_buffer;
+
+ if (isdigit (mangled[len0 - 1])) {
+ for (i = len0-2; i >= 0 && isdigit (mangled[i]); i -= 1)
+ ;
+ if (i > 1 && mangled[i] == '_' && mangled[i-1] == '_')
+ {
+ len0 = i - 1;
+ changed = 1;
+ }
+ else if (mangled[i] == '$')
+ {
+ len0 = i;
+ changed = 1;
+ }
+ }
+
+ for (i = 0, j = 0; i < len0 && ! isalpha (mangled[i]); i += 1, j += 1)
+ demangled[j] = mangled[i];
+
+ at_start_name = 1;
+ while (i < len0)
+ {
+ at_start_name = 0;
+
+ if (i < len0-2 && mangled[i] == '_' && mangled[i+1] == '_')
+ {
+ demangled[j] = '.';
+ changed = at_start_name = 1;
+ i += 2; j += 1;
+ }
+ else
+ {
+ demangled[j] = mangled[i];
+ i += 1; j += 1;
+ }
+ }
+ demangled[j] = '\000';
+
+ for (i = 0; demangled[i] != '\0'; i += 1)
+ if (isupper (demangled[i]) || demangled[i] == ' ')
+ goto Suppress;
+
+ if (! changed)
+ return NULL;
+ else
+ return demangled;
+
+ Suppress:
+ grow_vect ((void**) &(demangling_buffer),
+ &demangling_buffer_size, strlen (mangled) + 3,
+ sizeof (char));
+ demangled = demangling_buffer;
+ if (mangled[0] == '<')
+ strcpy (demangled, mangled);
+ else
+ sprintf (demangled, "<%s>", mangled);
+
+ return demangled;
+}
+
/* This function performs most of what cplus_demangle use to do, but
to be able to demangle a name with a B, K or n code, we need to
have a longer term memory of what types have been seen. The original