/* Helper routines for C++ support in GDB.
- Copyright 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009
+ Free Software Foundation, Inc.
Contributed by MontaVista Software.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
-#include <ctype.h>
#include "cp-support.h"
#include "gdb_string.h"
#include "demangle.h"
#include "complaints.h"
#include "gdbtypes.h"
+#include "safe-ctype.h"
+
#define d_left(dc) (dc)->u.s_binary.left
#define d_right(dc) (dc)->u.s_binary.right
static int sym_return_val_index;
static struct symbol **sym_return_val;
-static char *remove_params (const char *demangled_name);
-
static void overload_list_add_symbol (struct symbol *sym,
const char *oload_name);
static void maint_cplus_command (char *arg, int from_tty);
static void first_component_command (char *arg, int from_tty);
-/* Return the canonicalized form of STRING, or NULL if STRING can not be
- parsed. The return value is allocated via xmalloc.
+/* Return 1 if STRING is clearly already in canonical form. This
+ function is conservative; things which it does not recognize are
+ assumed to be non-canonical, and the parser will sort them out
+ afterwards. This speeds up the critical path for alphanumeric
+ identifiers. */
+
+static int
+cp_already_canonical (const char *string)
+{
+ /* Identifier start character [a-zA-Z_]. */
+ if (!ISIDST (string[0]))
+ return 0;
+
+ /* These are the only two identifiers which canonicalize to other
+ than themselves or an error: unsigned -> unsigned int and
+ signed -> int. */
+ if (string[0] == 'u' && strcmp (&string[1], "nsigned") == 0)
+ return 0;
+ else if (string[0] == 's' && strcmp (&string[1], "igned") == 0)
+ return 0;
+
+ /* Identifier character [a-zA-Z0-9_]. */
+ while (ISIDNUM (string[1]))
+ string++;
+
+ if (string[1] == '\0')
+ return 1;
+ else
+ return 0;
+}
- drow/2005-03-07: Should we also return NULL for things that trivially do
- not require any change? e.g. simple identifiers. This could be more
- efficient. */
+/* Parse STRING and convert it to canonical form. If parsing fails,
+ or if STRING is already canonical, return NULL. Otherwise return
+ the canonical form. The return value is allocated via xmalloc. */
char *
cp_canonicalize_string (const char *string)
{
- void *storage;
struct demangle_component *ret_comp;
+ unsigned int estimated_len;
char *ret;
- int len = strlen (string);
- len = len + len / 8;
+ if (cp_already_canonical (string))
+ return NULL;
- ret_comp = cp_demangled_name_to_comp (string, &storage, NULL);
+ ret_comp = cp_demangled_name_to_comp (string, NULL);
if (ret_comp == NULL)
return NULL;
- ret = cp_comp_to_string (ret_comp, len);
+ estimated_len = strlen (string) * 2;
+ ret = cp_comp_to_string (ret_comp, estimated_len);
- xfree (storage);
+ if (strcmp (string, ret) == 0)
+ {
+ xfree (ret);
+ return NULL;
+ }
return ret;
}
return NULL;
/* If we could demangle the name, parse it to build the component tree. */
- ret = cp_demangled_name_to_comp (demangled_name, memory, NULL);
+ ret = cp_demangled_name_to_comp (demangled_name, NULL);
if (ret == NULL)
{
- free (demangled_name);
+ xfree (demangled_name);
return NULL;
}
char *
cp_class_name_from_physname (const char *physname)
{
- void *storage;
+ void *storage = NULL;
char *demangled_name = NULL, *ret;
- struct demangle_component *ret_comp, *prev_comp;
+ struct demangle_component *ret_comp, *prev_comp, *cur_comp;
int done;
ret_comp = mangled_name_to_comp (physname, DMGL_ANSI, &storage,
return NULL;
done = 0;
- prev_comp = NULL;
+
+ /* First strip off any qualifiers, if we have a function or method. */
while (!done)
switch (ret_comp->type)
{
- case DEMANGLE_COMPONENT_TYPED_NAME:
- prev_comp = NULL;
- ret_comp = d_right (ret_comp);
- break;
- case DEMANGLE_COMPONENT_QUAL_NAME:
- case DEMANGLE_COMPONENT_LOCAL_NAME:
- prev_comp = ret_comp;
- ret_comp = d_right (ret_comp);
- break;
case DEMANGLE_COMPONENT_CONST:
case DEMANGLE_COMPONENT_RESTRICT:
case DEMANGLE_COMPONENT_VOLATILE:
case DEMANGLE_COMPONENT_RESTRICT_THIS:
case DEMANGLE_COMPONENT_VOLATILE_THIS:
case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
- prev_comp = NULL;
ret_comp = d_left (ret_comp);
break;
- case DEMANGLE_COMPONENT_NAME:
+ default:
+ done = 1;
+ break;
+ }
+
+ /* If what we have now is a function, discard the argument list. */
+ if (ret_comp->type == DEMANGLE_COMPONENT_TYPED_NAME)
+ ret_comp = d_left (ret_comp);
+
+ /* If what we have now is a template, strip off the template
+ arguments. The left subtree may be a qualified name. */
+ if (ret_comp->type == DEMANGLE_COMPONENT_TEMPLATE)
+ ret_comp = d_left (ret_comp);
+
+ /* What we have now should be a name, possibly qualified. Additional
+ qualifiers could live in the left subtree or the right subtree. Find
+ the last piece. */
+ done = 0;
+ prev_comp = NULL;
+ cur_comp = ret_comp;
+ while (!done)
+ switch (cur_comp->type)
+ {
+ case DEMANGLE_COMPONENT_QUAL_NAME:
+ case DEMANGLE_COMPONENT_LOCAL_NAME:
+ prev_comp = cur_comp;
+ cur_comp = d_right (cur_comp);
+ break;
case DEMANGLE_COMPONENT_TEMPLATE:
+ case DEMANGLE_COMPONENT_NAME:
case DEMANGLE_COMPONENT_CTOR:
case DEMANGLE_COMPONENT_DTOR:
case DEMANGLE_COMPONENT_OPERATOR:
break;
default:
done = 1;
- prev_comp = NULL;
- ret_comp = NULL;
+ cur_comp = NULL;
break;
}
ret = NULL;
- if (prev_comp != NULL)
+ if (cur_comp != NULL && prev_comp != NULL)
{
+ /* We want to discard the rightmost child of PREV_COMP. */
*prev_comp = *d_left (prev_comp);
/* The ten is completely arbitrary; we don't have a good estimate. */
- ret = cp_comp_to_string (prev_comp, 10);
+ ret = cp_comp_to_string (ret_comp, 10);
}
xfree (storage);
return ret;
}
-/* Return the name of the method whose linkage name is PHYSNAME. */
+/* Return the child of COMP which is the basename of a method, variable,
+ et cetera. All scope qualifiers are discarded, but template arguments
+ will be included. The component tree may be modified. */
-char *
-method_name_from_physname (const char *physname)
+static struct demangle_component *
+unqualified_name_from_comp (struct demangle_component *comp)
{
- void *storage;
- char *demangled_name = NULL, *ret;
- struct demangle_component *ret_comp;
+ struct demangle_component *ret_comp = comp, *last_template;
int done;
- ret_comp = mangled_name_to_comp (physname, DMGL_ANSI, &storage,
- &demangled_name);
- if (ret_comp == NULL)
- return NULL;
-
done = 0;
+ last_template = NULL;
while (!done)
switch (ret_comp->type)
{
case DEMANGLE_COMPONENT_QUAL_NAME:
case DEMANGLE_COMPONENT_LOCAL_NAME:
- case DEMANGLE_COMPONENT_TYPED_NAME:
ret_comp = d_right (ret_comp);
break;
+ case DEMANGLE_COMPONENT_TYPED_NAME:
+ ret_comp = d_left (ret_comp);
+ break;
+ case DEMANGLE_COMPONENT_TEMPLATE:
+ gdb_assert (last_template == NULL);
+ last_template = ret_comp;
+ ret_comp = d_left (ret_comp);
+ break;
case DEMANGLE_COMPONENT_CONST:
case DEMANGLE_COMPONENT_RESTRICT:
case DEMANGLE_COMPONENT_VOLATILE:
ret_comp = d_left (ret_comp);
break;
case DEMANGLE_COMPONENT_NAME:
- case DEMANGLE_COMPONENT_TEMPLATE:
case DEMANGLE_COMPONENT_CTOR:
case DEMANGLE_COMPONENT_DTOR:
case DEMANGLE_COMPONENT_OPERATOR:
done = 1;
break;
default:
- done = 1;
- ret_comp = NULL;
+ return NULL;
break;
}
+ if (last_template)
+ {
+ d_left (last_template) = ret_comp;
+ return last_template;
+ }
+
+ return ret_comp;
+}
+
+/* Return the name of the method whose linkage name is PHYSNAME. */
+
+char *
+method_name_from_physname (const char *physname)
+{
+ void *storage = NULL;
+ char *demangled_name = NULL, *ret;
+ struct demangle_component *ret_comp;
+ int done;
+
+ ret_comp = mangled_name_to_comp (physname, DMGL_ANSI, &storage,
+ &demangled_name);
+ if (ret_comp == NULL)
+ return NULL;
+
+ ret_comp = unqualified_name_from_comp (ret_comp);
+
ret = NULL;
if (ret_comp != NULL)
/* The ten is completely arbitrary; we don't have a good estimate. */
return ret;
}
+/* If FULL_NAME is the demangled name of a C++ function (including an
+ arg list, possibly including namespace/class qualifications),
+ return a new string containing only the function name (without the
+ arg list/class qualifications). Otherwise, return NULL. The
+ caller is responsible for freeing the memory in question. */
+
+char *
+cp_func_name (const char *full_name)
+{
+ char *ret;
+ struct demangle_component *ret_comp;
+ int done;
+
+ ret_comp = cp_demangled_name_to_comp (full_name, NULL);
+ if (!ret_comp)
+ return NULL;
+
+ ret_comp = unqualified_name_from_comp (ret_comp);
+
+ ret = NULL;
+ if (ret_comp != NULL)
+ ret = cp_comp_to_string (ret_comp, 10);
+
+ return ret;
+}
+
+/* DEMANGLED_NAME is the name of a function, including parameters and
+ (optionally) a return type. Return the name of the function without
+ parameters or return type, or NULL if we can not parse the name. */
+
+char *
+cp_remove_params (const char *demangled_name)
+{
+ int done = 0;
+ struct demangle_component *ret_comp;
+ char *ret = NULL;
+
+ if (demangled_name == NULL)
+ return NULL;
+
+ ret_comp = cp_demangled_name_to_comp (demangled_name, NULL);
+ if (ret_comp == NULL)
+ return NULL;
+
+ /* First strip off any qualifiers, if we have a function or method. */
+ while (!done)
+ switch (ret_comp->type)
+ {
+ case DEMANGLE_COMPONENT_CONST:
+ case DEMANGLE_COMPONENT_RESTRICT:
+ case DEMANGLE_COMPONENT_VOLATILE:
+ case DEMANGLE_COMPONENT_CONST_THIS:
+ case DEMANGLE_COMPONENT_RESTRICT_THIS:
+ case DEMANGLE_COMPONENT_VOLATILE_THIS:
+ case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
+ ret_comp = d_left (ret_comp);
+ break;
+ default:
+ done = 1;
+ break;
+ }
+
+ /* What we have now should be a function. Return its name. */
+ if (ret_comp->type == DEMANGLE_COMPONENT_TYPED_NAME)
+ ret = cp_comp_to_string (d_left (ret_comp), 10);
+
+ return ret;
+}
+
/* Here are some random pieces of trivia to keep in mind while trying
to take apart demangled names:
&& strncmp (name + index, "operator", LENGTH_OF_OPERATOR) == 0)
{
index += LENGTH_OF_OPERATOR;
- while (isspace(name[index]))
+ while (ISSPACE(name[index]))
++index;
switch (name[index])
{
return previous_len;
}
-/* If FULL_NAME is the demangled name of a C++ function (including an
- arg list, possibly including namespace/class qualifications),
- return a new string containing only the function name (without the
- arg list/class qualifications). Otherwise, return NULL. The
- caller is responsible for freeing the memory in question. */
-
-char *
-cp_func_name (const char *full_name)
-{
- const char *previous_component = full_name;
- const char *next_component;
-
- if (!full_name)
- return NULL;
-
- for (next_component = (previous_component
- + cp_find_first_component (previous_component));
- *next_component == ':';
- next_component = (previous_component
- + cp_find_first_component (previous_component)))
- {
- /* Skip '::'. */
- previous_component = next_component + 2;
- }
-
- return remove_params (previous_component);
-}
-
/* Overload resolution functions. */
-static char *
-remove_params (const char *demangled_name)
-{
- const char *argp;
- char *new_name;
- int depth;
-
- if (demangled_name == NULL)
- return NULL;
-
- /* First find the end of the arg list. */
- argp = strrchr (demangled_name, ')');
- if (argp == NULL)
- return NULL;
-
- /* Back up to the beginning. */
- depth = 1;
-
- while (argp-- > demangled_name)
- {
- if (*argp == ')')
- depth ++;
- else if (*argp == '(')
- {
- depth --;
-
- if (depth == 0)
- break;
- }
- }
- if (depth != 0)
- internal_error (__FILE__, __LINE__,
- _("bad demangled name %s\n"), demangled_name);
- while (argp[-1] == ' ' && argp > demangled_name)
- argp --;
-
- new_name = xmalloc (argp - demangled_name + 1);
- memcpy (new_name, demangled_name, argp - demangled_name);
- new_name[argp - demangled_name] = '\0';
- return new_name;
-}
-
/* Test to see if SYM is a symbol that we haven't seen corresponding
to a function named OLOAD_NAME. If so, add it to the current
completion list. */
return;
/* Get the demangled name without parameters */
- sym_name = remove_params (SYMBOL_NATURAL_NAME (sym));
+ sym_name = cp_remove_params (SYMBOL_NATURAL_NAME (sym));
if (!sym_name)
return;
/* Go through the symtabs and check the externs and statics for
symbols which match. */
- ALL_SYMTABS (objfile, s)
+ ALL_PRIMARY_SYMTABS (objfile, s)
{
QUIT;
b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
}
}
- ALL_SYMTABS (objfile, s)
+ ALL_PRIMARY_SYMTABS (objfile, s)
{
QUIT;
b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
struct symbol * rtti_sym;
struct type * rtti_type;
- rtti_sym = lookup_symbol (name, block, STRUCT_DOMAIN, NULL, NULL);
+ rtti_sym = lookup_symbol (name, block, STRUCT_DOMAIN, NULL);
if (rtti_sym == NULL)
{
static void
first_component_command (char *arg, int from_tty)
{
- int len = cp_find_first_component (arg);
- char *prefix = alloca (len + 1);
+ int len;
+ char *prefix;
+
+ if (!arg)
+ return;
+
+ len = cp_find_first_component (arg);
+ prefix = alloca (len + 1);
memcpy (prefix, arg, len);
prefix[len] = '\0';
add_cmd ("first_component", class_maintenance, first_component_command,
_("Print the first class/namespace component of NAME."),
&maint_cplus_cmd_list);
-
}
projects / deliverable / binutils-gdb.git / blobdiff