/* Helper routines for C++ support in GDB.
- Copyright (C) 2003, 2004, 2007, 2008, 2009 Free Software Foundation, Inc.
+ Copyright (C) 2003-2016 Free Software Foundation, Inc.
Contributed by David Carlton and by Kealia, Inc.
#include "gdb_obstack.h"
#include "symtab.h"
#include "symfile.h"
-#include "gdb_assert.h"
#include "block.h"
#include "objfiles.h"
#include "gdbtypes.h"
#include "command.h"
#include "frame.h"
#include "buildsym.h"
+#include "language.h"
+#include "namespace.h"
-static struct using_direct *cp_copy_usings (struct using_direct *using,
- struct obstack *obstack);
-
-static struct symbol *lookup_namespace_scope (const char *name,
- const char *linkage_name,
- const struct block *block,
- const domain_enum domain,
- const char *scope,
- int scope_len);
-
-static struct symbol *lookup_symbol_file (const char *name,
- const char *linkage_name,
- const struct block *block,
- const domain_enum domain,
- int anonymous_namespace);
+static struct block_symbol
+ cp_lookup_nested_symbol_1 (struct type *container_type,
+ const char *nested_name,
+ const char *concatenated_name,
+ const struct block *block,
+ const domain_enum domain,
+ int basic_lookup, int is_in_anonymous);
static struct type *cp_lookup_transparent_type_loop (const char *name,
const char *scope,
int scope_len);
-static void initialize_namespace_symtab (struct objfile *objfile);
-
-static struct block *get_possible_namespace_block (struct objfile *objfile);
-
-static void free_namespace_block (struct symtab *symtab);
-
-static int check_possible_namespace_symbols_loop (const char *name,
- int len,
- struct objfile *objfile);
-
-static int check_one_possible_namespace_symbol (const char *name,
- int len,
- struct objfile *objfile);
-
-static struct symbol *lookup_possible_namespace_symbol (const char *name);
-
-static void maintenance_cplus_namespace (char *args, int from_tty);
-
/* Check to see if SYMBOL refers to an object contained within an
anonymous namespace; if so, add an appropriate using directive. */
-/* Optimize away strlen ("(anonymous namespace)"). */
-
-#define ANONYMOUS_NAMESPACE_LEN 21
-
void
-cp_scan_for_anonymous_namespaces (const struct symbol *symbol)
+cp_scan_for_anonymous_namespaces (const struct symbol *const symbol,
+ struct objfile *const objfile)
{
if (SYMBOL_DEMANGLED_NAME (symbol) != NULL)
{
const char *name = SYMBOL_DEMANGLED_NAME (symbol);
unsigned int previous_component;
unsigned int next_component;
- const char *len;
/* Start with a quick-and-dirty check for mention of "(anonymous
namespace)". */
- if (!cp_is_anonymous (name))
+ if (!cp_is_in_anonymous (name))
return;
previous_component = 0;
while (name[next_component] == ':')
{
- if ((next_component - previous_component) == ANONYMOUS_NAMESPACE_LEN
+ if (((next_component - previous_component)
+ == CP_ANONYMOUS_NAMESPACE_LEN)
&& strncmp (name + previous_component,
- "(anonymous namespace)",
- ANONYMOUS_NAMESPACE_LEN) == 0)
+ CP_ANONYMOUS_NAMESPACE_STR,
+ CP_ANONYMOUS_NAMESPACE_LEN) == 0)
{
- int outer_len = (previous_component == 0 ? 0 : previous_component - 2);
- int inner_len = next_component;
+ int dest_len = (previous_component == 0
+ ? 0 : previous_component - 2);
+ int src_len = next_component;
- char *outer = alloca (outer_len + 1);
- char *inner = alloca (inner_len + 1);
+ char *dest = (char *) alloca (dest_len + 1);
+ char *src = (char *) alloca (src_len + 1);
- memcpy (outer, name, outer_len);
- memcpy (inner, name, inner_len);
+ memcpy (dest, name, dest_len);
+ memcpy (src, name, src_len);
- outer[outer_len] = '\0';
- inner[inner_len] = '\0';
+ dest[dest_len] = '\0';
+ src[src_len] = '\0';
/* We've found a component of the name that's an
anonymous namespace. So add symbols in it to the
namespace given by the previous component if there is
one, or to the global namespace if there isn't. */
- cp_add_using_directive (outer, inner);
+ add_using_directive (&local_using_directives,
+ dest, src, NULL, NULL, NULL, 1,
+ &objfile->objfile_obstack);
}
/* The "+ 2" is for the "::". */
previous_component = next_component + 2;
}
}
-/* Add a using directive to using_list. If the using directive in question
- has already been added, don't add it twice. */
+/* Test whether or not NAMESPACE looks like it mentions an anonymous
+ namespace; return nonzero if so. */
-void
-cp_add_using_directive (const char *outer, const char *inner)
+int
+cp_is_in_anonymous (const char *symbol_name)
{
- struct using_direct *current;
- struct using_direct *new;
+ return (strstr (symbol_name, CP_ANONYMOUS_NAMESPACE_STR)
+ != NULL);
+}
- /* Has it already been added? */
+/* Look up NAME in DOMAIN in BLOCK's static block and in global blocks.
+ If IS_IN_ANONYMOUS is nonzero, the symbol in question is located
+ within an anonymous namespace. */
- for (current = using_directives; current != NULL; current = current->next)
+static struct block_symbol
+cp_basic_lookup_symbol (const char *name, const struct block *block,
+ const domain_enum domain, int is_in_anonymous)
+{
+ struct block_symbol sym;
+
+ sym = lookup_symbol_in_static_block (name, block, domain);
+ if (sym.symbol != NULL)
+ return sym;
+
+ if (is_in_anonymous)
{
- if (strcmp (current->inner, inner) == 0
- && strcmp (current->outer, outer) == 0)
- return;
- }
+ /* Symbols defined in anonymous namespaces have external linkage
+ but should be treated as local to a single file nonetheless.
+ So we only search the current file's global block. */
- using_directives = cp_add_using (outer, inner, using_directives);
+ const struct block *global_block = block_global_block (block);
-}
+ if (global_block != NULL)
+ {
+ sym.symbol = lookup_symbol_in_block (name, global_block, domain);
+ sym.block = global_block;
+ }
+ }
+ else
+ sym = lookup_global_symbol (name, block, domain);
-/* Record the namespace that the function defined by SYMBOL was
- defined in, if necessary. BLOCK is the associated block; use
- OBSTACK for allocation. */
+ return sym;
+}
-void
-cp_set_block_scope (const struct symbol *symbol,
- struct block *block,
- struct obstack *obstack,
- const char *processing_current_prefix,
- int processing_has_namespace_info)
+/* Search bare symbol NAME in DOMAIN in BLOCK.
+ NAME is guaranteed to not have any scope (no "::") in its name, though
+ if for example NAME is a template spec then "::" may appear in the
+ argument list.
+ If LANGDEF is non-NULL then try to lookup NAME as a primitive type in
+ that language. Normally we wouldn't need LANGDEF but fortran also uses
+ this code.
+ If SEARCH is non-zero then see if we can determine "this" from BLOCK, and
+ if so then also search for NAME in that class. */
+
+static struct block_symbol
+cp_lookup_bare_symbol (const struct language_defn *langdef,
+ const char *name, const struct block *block,
+ const domain_enum domain, int search)
{
- if (processing_has_namespace_info)
+ struct block_symbol sym;
+
+ /* Note: We can't do a simple assert for ':' not being in NAME because
+ ':' may be in the args of a template spec. This isn't intended to be
+ a complete test, just cheap and documentary. */
+ if (strchr (name, '<') == NULL && strchr (name, '(') == NULL)
+ gdb_assert (strstr (name, "::") == NULL);
+
+ sym = lookup_symbol_in_static_block (name, block, domain);
+ if (sym.symbol != NULL)
+ return sym;
+
+ /* If we didn't find a definition for a builtin type in the static block,
+ search for it now. This is actually the right thing to do and can be
+ a massive performance win. E.g., when debugging a program with lots of
+ shared libraries we could search all of them only to find out the
+ builtin type isn't defined in any of them. This is common for types
+ like "void". */
+ if (langdef != NULL && domain == VAR_DOMAIN)
{
- block_set_scope
- (block, obsavestring (processing_current_prefix,
- strlen (processing_current_prefix),
- obstack),
- obstack);
+ struct gdbarch *gdbarch;
+
+ if (block == NULL)
+ gdbarch = target_gdbarch ();
+ else
+ gdbarch = block_gdbarch (block);
+ sym.symbol
+ = language_lookup_primitive_type_as_symbol (langdef, gdbarch, name);
+ sym.block = NULL;
+ if (sym.symbol != NULL)
+ return sym;
}
- else if (SYMBOL_DEMANGLED_NAME (symbol) != NULL)
+
+ sym = lookup_global_symbol (name, block, domain);
+ if (sym.symbol != NULL)
+ return sym;
+
+ if (search)
{
- /* Try to figure out the appropriate namespace from the
- demangled name. */
+ struct block_symbol lang_this;
+ struct type *type;
- /* FIXME: carlton/2003-04-15: If the function in question is
- a method of a class, the name will actually include the
- name of the class as well. This should be harmless, but
- is a little unfortunate. */
+ lang_this = lookup_language_this (language_def (language_cplus), block);
+ if (lang_this.symbol == NULL)
+ return null_block_symbol;
- const char *name = SYMBOL_DEMANGLED_NAME (symbol);
- unsigned int prefix_len = cp_entire_prefix_len (name);
+ type = check_typedef (TYPE_TARGET_TYPE (SYMBOL_TYPE (lang_this.symbol)));
+ /* If TYPE_NAME is NULL, abandon trying to find this symbol.
+ This can happen for lambda functions compiled with clang++,
+ which outputs no name for the container class. */
+ if (TYPE_NAME (type) == NULL)
+ return null_block_symbol;
- block_set_scope (block,
- obsavestring (name, prefix_len, obstack),
- obstack);
+ /* Look for symbol NAME in this class. */
+ sym = cp_lookup_nested_symbol (type, name, block, domain);
}
+
+ return sym;
}
-/* Test whether or not NAMESPACE looks like it mentions an anonymous
- namespace; return nonzero if so. */
+/* Search NAME in DOMAIN in all static blocks, and then in all baseclasses.
+ BLOCK specifies the context in which to perform the search.
+ NAME is guaranteed to have scope (contain "::") and PREFIX_LEN specifies
+ the length of the entire scope of NAME (up to, but not including, the last
+ "::".
+
+ Note: At least in the case of Fortran, which also uses this code, there
+ may be no text after the last "::". */
+
+static struct block_symbol
+cp_search_static_and_baseclasses (const char *name,
+ const struct block *block,
+ const domain_enum domain,
+ unsigned int prefix_len,
+ int is_in_anonymous)
+{
+ struct block_symbol sym;
+ char *klass, *nested;
+ struct cleanup *cleanup;
+ struct block_symbol klass_sym;
+ struct type *klass_type;
+
+ /* Check for malformed input. */
+ if (prefix_len + 2 > strlen (name) || name[prefix_len + 1] != ':')
+ return null_block_symbol;
+
+ /* Find the name of the class and the name of the method, variable, etc. */
+
+ /* The class name is everything up to and including PREFIX_LEN. */
+ klass = savestring (name, prefix_len);
+
+ /* The rest of the name is everything else past the initial scope
+ operator. */
+ nested = xstrdup (name + prefix_len + 2);
+
+ /* Add cleanups to free memory for these strings. */
+ cleanup = make_cleanup (xfree, klass);
+ make_cleanup (xfree, nested);
+
+ /* Lookup a class named KLASS. If none is found, there is nothing
+ more that can be done. KLASS could be a namespace, so always look
+ in VAR_DOMAIN. This works for classes too because of
+ symbol_matches_domain (which should be replaced with something else,
+ but it's what we have today). */
+ klass_sym = lookup_global_symbol (klass, block, VAR_DOMAIN);
+ if (klass_sym.symbol == NULL)
+ {
+ do_cleanups (cleanup);
+ return null_block_symbol;
+ }
+ klass_type = SYMBOL_TYPE (klass_sym.symbol);
-int
-cp_is_anonymous (const char *namespace)
+ /* Look for a symbol named NESTED in this class.
+ The caller is assumed to have already have done a basic lookup of NAME.
+ So we pass zero for BASIC_LOOKUP to cp_lookup_nested_symbol_1 here. */
+ sym = cp_lookup_nested_symbol_1 (klass_type, nested, name, block, domain,
+ 0, is_in_anonymous);
+
+ do_cleanups (cleanup);
+ return sym;
+}
+
+/* Look up NAME in the C++ namespace NAMESPACE. Other arguments are
+ as in cp_lookup_symbol_nonlocal. If SEARCH is non-zero, search
+ through base classes for a matching symbol.
+
+ Note: Part of the complexity is because NAME may itself specify scope.
+ Part of the complexity is also because this handles the case where
+ there is no scoping in which case we also try looking in the class of
+ "this" if we can compute it. */
+
+static struct block_symbol
+cp_lookup_symbol_in_namespace (const char *the_namespace, const char *name,
+ const struct block *block,
+ const domain_enum domain, int search)
{
- return (strstr (namespace, "(anonymous namespace)")
- != NULL);
+ char *concatenated_name = NULL;
+ int is_in_anonymous;
+ unsigned int prefix_len;
+ struct block_symbol sym;
+
+ if (the_namespace[0] != '\0')
+ {
+ concatenated_name
+ = (char *) alloca (strlen (the_namespace) + 2 + strlen (name) + 1);
+ strcpy (concatenated_name, the_namespace);
+ strcat (concatenated_name, "::");
+ strcat (concatenated_name, name);
+ name = concatenated_name;
+ }
+
+ prefix_len = cp_entire_prefix_len (name);
+ if (prefix_len == 0)
+ return cp_lookup_bare_symbol (NULL, name, block, domain, search);
+
+ /* This would be simpler if we just called cp_lookup_nested_symbol
+ at this point. But that would require first looking up the containing
+ class/namespace. Since we're only searching static and global blocks
+ there's often no need to first do that lookup. */
+
+ is_in_anonymous
+ = the_namespace[0] != '\0' && cp_is_in_anonymous (the_namespace);
+ sym = cp_basic_lookup_symbol (name, block, domain, is_in_anonymous);
+ if (sym.symbol != NULL)
+ return sym;
+
+ if (search)
+ sym = cp_search_static_and_baseclasses (name, block, domain, prefix_len,
+ is_in_anonymous);
+
+ return sym;
}
-/* Create a new struct using direct whose inner namespace is INNER
- and whose outer namespace is OUTER.
- Set its next member in the linked list to NEXT; allocate all memory
- using xmalloc. It copies the strings, so NAME can be a temporary
- string. */
+/* Used for cleanups to reset the "searched" flag in case of an error. */
-struct using_direct *
-cp_add_using (const char *outer,
- const char *inner,
- struct using_direct *next)
+static void
+reset_directive_searched (void *data)
{
- struct using_direct *retval;
+ struct using_direct *direct = (struct using_direct *) data;
+ direct->searched = 0;
+}
- retval = xmalloc (sizeof (struct using_direct));
- retval->inner = savestring (inner, strlen(inner));
- retval->outer = savestring (outer, strlen(outer));
- retval->next = next;
+/* Search for NAME by applying all import statements belonging to
+ BLOCK which are applicable in SCOPE. If DECLARATION_ONLY the
+ search is restricted to using declarations.
+ Example:
+
+ namespace A {
+ int x;
+ }
+ using A::x;
+
+ If SEARCH_PARENTS the search will include imports which are
+ applicable in parents of SCOPE.
+ Example:
+
+ namespace A {
+ using namespace X;
+ namespace B {
+ using namespace Y;
+ }
+ }
+
+ If SCOPE is "A::B" and SEARCH_PARENTS is true the imports of
+ namespaces X and Y will be considered. If SEARCH_PARENTS is false
+ only the import of Y is considered.
+
+ SEARCH_SCOPE_FIRST is an internal implementation detail: Callers must
+ pass 0 for it. Internally we pass 1 when recursing. */
+
+static struct block_symbol
+cp_lookup_symbol_via_imports (const char *scope,
+ const char *name,
+ const struct block *block,
+ const domain_enum domain,
+ const int search_scope_first,
+ const int declaration_only,
+ const int search_parents)
+{
+ struct using_direct *current;
+ struct block_symbol sym;
+ int len;
+ int directive_match;
+ struct cleanup *searched_cleanup;
+
+ sym.symbol = NULL;
+ sym.block = NULL;
+
+ /* First, try to find the symbol in the given namespace if requested. */
+ if (search_scope_first)
+ sym = cp_lookup_symbol_in_namespace (scope, name,
+ block, domain, 1);
+
+ if (sym.symbol != NULL)
+ return sym;
+
+ /* Go through the using directives. If any of them add new names to
+ the namespace we're searching in, see if we can find a match by
+ applying them. */
+
+ for (current = block_using (block);
+ current != NULL;
+ current = current->next)
+ {
+ const char **excludep;
+
+ len = strlen (current->import_dest);
+ directive_match = (search_parents
+ ? (startswith (scope, current->import_dest)
+ && (len == 0
+ || scope[len] == ':'
+ || scope[len] == '\0'))
+ : strcmp (scope, current->import_dest) == 0);
+
+ /* If the import destination is the current scope or one of its
+ ancestors then it is applicable. */
+ if (directive_match && !current->searched)
+ {
+ /* Mark this import as searched so that the recursive call
+ does not search it again. */
+ current->searched = 1;
+ searched_cleanup = make_cleanup (reset_directive_searched,
+ current);
+
+ /* If there is an import of a single declaration, compare the
+ imported declaration (after optional renaming by its alias)
+ with the sought out name. If there is a match pass
+ current->import_src as NAMESPACE to direct the search
+ towards the imported namespace. */
+ if (current->declaration
+ && strcmp (name, current->alias
+ ? current->alias : current->declaration) == 0)
+ sym = cp_lookup_symbol_in_namespace (current->import_src,
+ current->declaration,
+ block, domain, 1);
+
+ /* If this is a DECLARATION_ONLY search or a symbol was found
+ or this import statement was an import declaration, the
+ search of this import is complete. */
+ if (declaration_only || sym.symbol != NULL || current->declaration)
+ {
+ current->searched = 0;
+ discard_cleanups (searched_cleanup);
+
+ if (sym.symbol != NULL)
+ return sym;
+
+ continue;
+ }
+
+ /* Do not follow CURRENT if NAME matches its EXCLUDES. */
+ for (excludep = current->excludes; *excludep; excludep++)
+ if (strcmp (name, *excludep) == 0)
+ break;
+ if (*excludep)
+ {
+ discard_cleanups (searched_cleanup);
+ continue;
+ }
+
+ if (current->alias != NULL
+ && strcmp (name, current->alias) == 0)
+ /* If the import is creating an alias and the alias matches
+ the sought name. Pass current->import_src as the NAME to
+ direct the search towards the aliased namespace. */
+ {
+ sym = cp_lookup_symbol_in_namespace (scope,
+ current->import_src,
+ block, domain, 1);
+ }
+ else if (current->alias == NULL)
+ {
+ /* If this import statement creates no alias, pass
+ current->inner as NAMESPACE to direct the search
+ towards the imported namespace. */
+ sym = cp_lookup_symbol_via_imports (current->import_src,
+ name, block,
+ domain, 1, 0, 0);
+ }
+ current->searched = 0;
+ discard_cleanups (searched_cleanup);
+
+ if (sym.symbol != NULL)
+ return sym;
+ }
+ }
- return retval;
+ return null_block_symbol;
}
-/* Make a copy of the using directives in the list pointed to by
- USING, using OBSTACK to allocate memory. Free all memory pointed
- to by USING via xfree. */
+/* Helper function that searches an array of symbols for one named NAME. */
-static struct using_direct *
-cp_copy_usings (struct using_direct *using,
- struct obstack *obstack)
+static struct symbol *
+search_symbol_list (const char *name, int num,
+ struct symbol **syms)
{
- if (using == NULL)
+ int i;
+
+ /* Maybe we should store a dictionary in here instead. */
+ for (i = 0; i < num; ++i)
{
- return NULL;
+ if (strcmp (name, SYMBOL_NATURAL_NAME (syms[i])) == 0)
+ return syms[i];
}
- else
+ return NULL;
+}
+
+/* Like cp_lookup_symbol_via_imports, but if BLOCK is a function, it
+ searches through the template parameters of the function and the
+ function's type. */
+
+struct block_symbol
+cp_lookup_symbol_imports_or_template (const char *scope,
+ const char *name,
+ const struct block *block,
+ const domain_enum domain)
+{
+ struct symbol *function = BLOCK_FUNCTION (block);
+ struct block_symbol result;
+
+ if (symbol_lookup_debug)
+ {
+ fprintf_unfiltered (gdb_stdlog,
+ "cp_lookup_symbol_imports_or_template"
+ " (%s, %s, %s, %s)\n",
+ scope, name, host_address_to_string (block),
+ domain_name (domain));
+ }
+
+ if (function != NULL && SYMBOL_LANGUAGE (function) == language_cplus)
{
- struct using_direct *retval
- = obstack_alloc (obstack, sizeof (struct using_direct));
- retval->inner = obsavestring (using->inner, strlen (using->inner),
- obstack);
- retval->outer = obsavestring (using->outer, strlen (using->outer),
- obstack);
- retval->next = cp_copy_usings (using->next, obstack);
-
- xfree (using->inner);
- xfree (using->outer);
- xfree (using);
-
- return retval;
+ /* Search the function's template parameters. */
+ if (SYMBOL_IS_CPLUS_TEMPLATE_FUNCTION (function))
+ {
+ struct template_symbol *templ
+ = (struct template_symbol *) function;
+ struct symbol *sym = search_symbol_list (name,
+ templ->n_template_arguments,
+ templ->template_arguments);
+
+ if (sym != NULL)
+ {
+ if (symbol_lookup_debug)
+ {
+ fprintf_unfiltered (gdb_stdlog,
+ "cp_lookup_symbol_imports_or_template"
+ " (...) = %s\n",
+ host_address_to_string (sym));
+ }
+ return (struct block_symbol) {sym, block};
+ }
+ }
+
+ /* Search the template parameters of the function's defining
+ context. */
+ if (SYMBOL_NATURAL_NAME (function))
+ {
+ struct type *context;
+ char *name_copy = xstrdup (SYMBOL_NATURAL_NAME (function));
+ struct cleanup *cleanups = make_cleanup (xfree, name_copy);
+ const struct language_defn *lang = language_def (language_cplus);
+ struct gdbarch *arch = symbol_arch (function);
+ const struct block *parent = BLOCK_SUPERBLOCK (block);
+ struct symbol *sym;
+
+ while (1)
+ {
+ unsigned int prefix_len = cp_entire_prefix_len (name_copy);
+
+ if (prefix_len == 0)
+ context = NULL;
+ else
+ {
+ name_copy[prefix_len] = '\0';
+ context = lookup_typename (lang, arch,
+ name_copy,
+ parent, 1);
+ }
+
+ if (context == NULL)
+ break;
+
+ sym
+ = search_symbol_list (name,
+ TYPE_N_TEMPLATE_ARGUMENTS (context),
+ TYPE_TEMPLATE_ARGUMENTS (context));
+ if (sym != NULL)
+ {
+ do_cleanups (cleanups);
+ if (symbol_lookup_debug)
+ {
+ fprintf_unfiltered
+ (gdb_stdlog,
+ "cp_lookup_symbol_imports_or_template (...) = %s\n",
+ host_address_to_string (sym));
+ }
+ return (struct block_symbol) {sym, parent};
+ }
+ }
+
+ do_cleanups (cleanups);
+ }
}
+
+ result = cp_lookup_symbol_via_imports (scope, name, block, domain, 0, 1, 1);
+ if (symbol_lookup_debug)
+ {
+ fprintf_unfiltered (gdb_stdlog,
+ "cp_lookup_symbol_imports_or_template (...) = %s\n",
+ result.symbol != NULL
+ ? host_address_to_string (result.symbol) : "NULL");
+ }
+ return result;
}
-/* The C++-specific version of name lookup for static and global
- names. This makes sure that names get looked for in all namespaces
- that are in scope. NAME is the natural name of the symbol that
- we're looking for, LINKAGE_NAME (which is optional) is its linkage
- name, BLOCK is the block that we're searching within, DOMAIN says
- what kind of symbols we're looking for, and if SYMTAB is non-NULL,
- we should store the symtab where we found the symbol in it. */
-
-struct symbol *
-cp_lookup_symbol_nonlocal (const char *name,
- const char *linkage_name,
- const struct block *block,
- const domain_enum domain)
+/* Search for NAME by applying relevant import statements belonging to BLOCK
+ and its parents. SCOPE is the namespace scope of the context in which the
+ search is being evaluated. */
+
+static struct block_symbol
+cp_lookup_symbol_via_all_imports (const char *scope, const char *name,
+ const struct block *block,
+ const domain_enum domain)
{
- return lookup_namespace_scope (name, linkage_name, block, domain,
- block_scope (block), 0);
+ struct block_symbol sym;
+
+ while (block != NULL)
+ {
+ sym = cp_lookup_symbol_via_imports (scope, name, block, domain, 0, 0, 1);
+ if (sym.symbol)
+ return sym;
+
+ block = BLOCK_SUPERBLOCK (block);
+ }
+
+ return null_block_symbol;
+}
+
+/* Searches for NAME in the current namespace, and by applying
+ relevant import statements belonging to BLOCK and its parents.
+ SCOPE is the namespace scope of the context in which the search is
+ being evaluated. */
+
+struct block_symbol
+cp_lookup_symbol_namespace (const char *scope,
+ const char *name,
+ const struct block *block,
+ const domain_enum domain)
+{
+ struct block_symbol sym;
+
+ if (symbol_lookup_debug)
+ {
+ fprintf_unfiltered (gdb_stdlog,
+ "cp_lookup_symbol_namespace (%s, %s, %s, %s)\n",
+ scope, name, host_address_to_string (block),
+ domain_name (domain));
+ }
+
+ /* First, try to find the symbol in the given namespace. */
+ sym = cp_lookup_symbol_in_namespace (scope, name, block, domain, 1);
+
+ /* Search for name in namespaces imported to this and parent blocks. */
+ if (sym.symbol == NULL)
+ sym = cp_lookup_symbol_via_all_imports (scope, name, block, domain);
+
+ if (symbol_lookup_debug)
+ {
+ fprintf_unfiltered (gdb_stdlog,
+ "cp_lookup_symbol_namespace (...) = %s\n",
+ sym.symbol != NULL
+ ? host_address_to_string (sym.symbol) : "NULL");
+ }
+ return sym;
}
/* Lookup NAME at namespace scope (or, in C terms, in static and
"A::x", and if that call fails, then the first call looks for
"x". */
-static struct symbol *
-lookup_namespace_scope (const char *name,
- const char *linkage_name,
+static struct block_symbol
+lookup_namespace_scope (const struct language_defn *langdef,
+ const char *name,
const struct block *block,
const domain_enum domain,
const char *scope,
int scope_len)
{
- char *namespace;
+ char *the_namespace;
if (scope[scope_len] != '\0')
{
/* Recursively search for names in child namespaces first. */
- struct symbol *sym;
+ struct block_symbol sym;
int new_scope_len = scope_len;
/* If the current scope is followed by "::", skip past that. */
new_scope_len += 2;
}
new_scope_len += cp_find_first_component (scope + new_scope_len);
- sym = lookup_namespace_scope (name, linkage_name, block,
- domain, scope, new_scope_len);
- if (sym != NULL)
+ sym = lookup_namespace_scope (langdef, name, block, domain,
+ scope, new_scope_len);
+ if (sym.symbol != NULL)
return sym;
}
/* Okay, we didn't find a match in our children, so look for the
- name in the current namespace. */
-
- namespace = alloca (scope_len + 1);
- strncpy (namespace, scope, scope_len);
- namespace[scope_len] = '\0';
- return cp_lookup_symbol_namespace (namespace, name, linkage_name,
- block, domain);
+ name in the current namespace.
+
+ If we there is no scope and we know we have a bare symbol, then short
+ circuit everything and call cp_lookup_bare_symbol directly.
+ This isn't an optimization, rather it allows us to pass LANGDEF which
+ is needed for primitive type lookup. The test doesn't have to be
+ perfect: if NAME is a bare symbol that our test doesn't catch (e.g., a
+ template symbol with "::" in the argument list) then
+ cp_lookup_symbol_in_namespace will catch it. */
+
+ if (scope_len == 0 && strchr (name, ':') == NULL)
+ return cp_lookup_bare_symbol (langdef, name, block, domain, 1);
+
+ the_namespace = (char *) alloca (scope_len + 1);
+ strncpy (the_namespace, scope, scope_len);
+ the_namespace[scope_len] = '\0';
+ return cp_lookup_symbol_in_namespace (the_namespace, name,
+ block, domain, 1);
}
-/* Look up NAME in the C++ namespace NAMESPACE, applying the using
- directives that are active in BLOCK. Other arguments are as in
- cp_lookup_symbol_nonlocal. */
+/* The C++-specific version of name lookup for static and global
+ names. This makes sure that names get looked for in all namespaces
+ that are in scope. NAME is the natural name of the symbol that
+ we're looking for, BLOCK is the block that we're searching within,
+ DOMAIN says what kind of symbols we're looking for. */
-struct symbol *
-cp_lookup_symbol_namespace (const char *namespace,
- const char *name,
- const char *linkage_name,
- const struct block *block,
- const domain_enum domain)
+struct block_symbol
+cp_lookup_symbol_nonlocal (const struct language_defn *langdef,
+ const char *name,
+ const struct block *block,
+ const domain_enum domain)
{
- const struct using_direct *current;
- struct symbol *sym;
+ struct block_symbol sym;
+ const char *scope = block_scope (block);
- /* First, go through the using directives. If any of them add new
- names to the namespace we're searching in, see if we can find a
- match by applying them. */
-
- for (current = block_using (block);
- current != NULL;
- current = current->next)
+ if (symbol_lookup_debug)
{
- if (strcmp (namespace, current->outer) == 0)
- {
- sym = cp_lookup_symbol_namespace (current->inner,
- name,
- linkage_name,
- block,
- domain);
- if (sym != NULL)
- return sym;
- }
+ fprintf_unfiltered (gdb_stdlog,
+ "cp_lookup_symbol_non_local"
+ " (%s, %s (scope %s), %s)\n",
+ name, host_address_to_string (block), scope,
+ domain_name (domain));
}
- /* We didn't find anything by applying any of the using directives
- that are still applicable; so let's see if we've got a match
- using the current namespace. */
-
- if (namespace[0] == '\0')
+ /* First, try to find the symbol in the given namespace, and all
+ containing namespaces. */
+ sym = lookup_namespace_scope (langdef, name, block, domain, scope, 0);
+
+ /* Search for name in namespaces imported to this and parent blocks. */
+ if (sym.symbol == NULL)
+ sym = cp_lookup_symbol_via_all_imports (scope, name, block, domain);
+
+ if (symbol_lookup_debug)
{
- return lookup_symbol_file (name, linkage_name, block,
- domain, 0);
+ fprintf_unfiltered (gdb_stdlog,
+ "cp_lookup_symbol_nonlocal (...) = %s\n",
+ (sym.symbol != NULL
+ ? host_address_to_string (sym.symbol)
+ : "NULL"));
}
- else
+ return sym;
+}
+
+/* Search through the base classes of PARENT_TYPE for a base class
+ named NAME and return its type. If not found, return NULL. */
+
+struct type *
+cp_find_type_baseclass_by_name (struct type *parent_type, const char *name)
+{
+ int i;
+
+ parent_type = check_typedef (parent_type);
+ for (i = 0; i < TYPE_N_BASECLASSES (parent_type); ++i)
{
- char *concatenated_name
- = alloca (strlen (namespace) + 2 + strlen (name) + 1);
- strcpy (concatenated_name, namespace);
- strcat (concatenated_name, "::");
- strcat (concatenated_name, name);
- sym = lookup_symbol_file (concatenated_name, linkage_name,
- block, domain,
- cp_is_anonymous (namespace));
- return sym;
+ struct type *type = check_typedef (TYPE_BASECLASS (parent_type, i));
+ const char *base_name = TYPE_BASECLASS_NAME (parent_type, i);
+
+ if (base_name == NULL)
+ continue;
+
+ if (streq (base_name, name))
+ return type;
+
+ type = cp_find_type_baseclass_by_name (type, name);
+ if (type != NULL)
+ return type;
}
+
+ return NULL;
}
-/* Look up NAME in BLOCK's static block and in global blocks. If
- ANONYMOUS_NAMESPACE is nonzero, the symbol in question is located
- within an anonymous namespace. Other arguments are as in
- cp_lookup_symbol_nonlocal. */
+/* Search through the base classes of PARENT_TYPE for a symbol named
+ NAME in block BLOCK. */
-static struct symbol *
-lookup_symbol_file (const char *name,
- const char *linkage_name,
- const struct block *block,
- const domain_enum domain,
- int anonymous_namespace)
+static struct block_symbol
+find_symbol_in_baseclass (struct type *parent_type, const char *name,
+ const struct block *block, const domain_enum domain,
+ int is_in_anonymous)
{
- struct symbol *sym = NULL;
+ int i;
+ struct block_symbol sym;
+ struct cleanup *cleanup;
+ char *concatenated_name;
- sym = lookup_symbol_static (name, linkage_name, block, domain);
- if (sym != NULL)
- return sym;
+ sym.symbol = NULL;
+ sym.block = NULL;
+ concatenated_name = NULL;
+ cleanup = make_cleanup (free_current_contents, &concatenated_name);
- if (anonymous_namespace)
+ for (i = 0; i < TYPE_N_BASECLASSES (parent_type); ++i)
{
- /* Symbols defined in anonymous namespaces have external linkage
- but should be treated as local to a single file nonetheless.
- So we only search the current file's global block. */
+ size_t len;
+ struct type *base_type = TYPE_BASECLASS (parent_type, i);
+ const char *base_name = TYPE_BASECLASS_NAME (parent_type, i);
- const struct block *global_block = block_global_block (block);
-
- if (global_block != NULL)
- sym = lookup_symbol_aux_block (name, linkage_name, global_block,
- domain);
+ if (base_name == NULL)
+ continue;
+
+ len = strlen (base_name) + 2 + strlen (name) + 1;
+ concatenated_name = (char *) xrealloc (concatenated_name, len);
+ xsnprintf (concatenated_name, len, "%s::%s", base_name, name);
+
+ sym = cp_lookup_nested_symbol_1 (base_type, name, concatenated_name,
+ block, domain, 1, is_in_anonymous);
+ if (sym.symbol != NULL)
+ break;
}
- else
+
+ do_cleanups (cleanup);
+ return sym;
+}
+
+/* Helper function to look up NESTED_NAME in CONTAINER_TYPE and in DOMAIN
+ and within the context of BLOCK.
+ NESTED_NAME may have scope ("::").
+ CONTAINER_TYPE needn't have been "check_typedef'd" yet.
+ CONCATENATED_NAME is the fully scoped spelling of NESTED_NAME, it is
+ passed as an argument so that callers can control how space for it is
+ allocated.
+ If BASIC_LOOKUP is non-zero then perform a basic lookup of
+ CONCATENATED_NAME. See cp_basic_lookup_symbol for details.
+ If IS_IN_ANONYMOUS is non-zero then CONCATENATED_NAME is in an anonymous
+ namespace. */
+
+static struct block_symbol
+cp_lookup_nested_symbol_1 (struct type *container_type,
+ const char *nested_name,
+ const char *concatenated_name,
+ const struct block *block,
+ const domain_enum domain,
+ int basic_lookup, int is_in_anonymous)
+{
+ struct block_symbol sym;
+
+ /* NOTE: carlton/2003-11-10: We don't treat C++ class members
+ of classes like, say, data or function members. Instead,
+ they're just represented by symbols whose names are
+ qualified by the name of the surrounding class. This is
+ just like members of namespaces; in particular,
+ cp_basic_lookup_symbol works when looking them up. */
+
+ if (basic_lookup)
{
- sym = lookup_symbol_global (name, linkage_name, block, domain);
+ sym = cp_basic_lookup_symbol (concatenated_name, block, domain,
+ is_in_anonymous);
+ if (sym.symbol != NULL)
+ return sym;
}
- if (sym != NULL)
- return sym;
+ /* Now search all static file-level symbols. We have to do this for things
+ like typedefs in the class. We do not try to guess any imported
+ namespace as even the fully specified namespace search is already not
+ C++ compliant and more assumptions could make it too magic. */
- /* Now call "lookup_possible_namespace_symbol". Symbols in here
- claim to be associated to namespaces, but this claim might be
- incorrect: the names in question might actually correspond to
- classes instead of namespaces. But if they correspond to
- classes, then we should have found a match for them above. So if
- we find them now, they should be genuine. */
+ /* First search in this symtab, what we want is possibly there. */
+ sym = lookup_symbol_in_static_block (concatenated_name, block, domain);
+ if (sym.symbol != NULL)
+ return sym;
- /* FIXME: carlton/2003-06-12: This is a hack and should eventually
- be deleted: see comments below. */
+ /* Nope. We now have to search all static blocks in all objfiles,
+ even if block != NULL, because there's no guarantees as to which
+ symtab the symbol we want is in. Except for symbols defined in
+ anonymous namespaces should be treated as local to a single file,
+ which we just searched. */
+ if (!is_in_anonymous)
+ {
+ sym = lookup_static_symbol (concatenated_name, domain);
+ if (sym.symbol != NULL)
+ return sym;
+ }
- if (domain == VAR_DOMAIN)
+ /* If this is a class with baseclasses, search them next. */
+ container_type = check_typedef (container_type);
+ if (TYPE_N_BASECLASSES (container_type) > 0)
{
- sym = lookup_possible_namespace_symbol (name);
- if (sym != NULL)
+ sym = find_symbol_in_baseclass (container_type, nested_name, block,
+ domain, is_in_anonymous);
+ if (sym.symbol != NULL)
return sym;
}
- return NULL;
+ return null_block_symbol;
}
-/* Look up a type named NESTED_NAME that is nested inside the C++
+/* Look up a symbol named NESTED_NAME that is nested inside the C++
class or namespace given by PARENT_TYPE, from within the context
- given by BLOCK. Return NULL if there is no such nested type. */
-
-struct type *
-cp_lookup_nested_type (struct type *parent_type,
- const char *nested_name,
- const struct block *block)
+ given by BLOCK, and in DOMAIN.
+ Return NULL if there is no such nested symbol. */
+
+struct block_symbol
+cp_lookup_nested_symbol (struct type *parent_type,
+ const char *nested_name,
+ const struct block *block,
+ const domain_enum domain)
{
+ /* type_name_no_tag_or_error provides better error reporting using the
+ original type. */
+ struct type *saved_parent_type = parent_type;
+
+ parent_type = check_typedef (parent_type);
+
+ if (symbol_lookup_debug)
+ {
+ const char *type_name = type_name_no_tag (saved_parent_type);
+
+ fprintf_unfiltered (gdb_stdlog,
+ "cp_lookup_nested_symbol (%s, %s, %s, %s)\n",
+ type_name != NULL ? type_name : "unnamed",
+ nested_name, host_address_to_string (block),
+ domain_name (domain));
+ }
+
switch (TYPE_CODE (parent_type))
{
case TYPE_CODE_STRUCT:
case TYPE_CODE_NAMESPACE:
+ case TYPE_CODE_UNION:
+ case TYPE_CODE_ENUM:
+ /* NOTE: Handle modules here as well, because Fortran is re-using the C++
+ specific code to lookup nested symbols in modules, by calling the
+ function pointer la_lookup_symbol_nonlocal, which ends up here. */
+ case TYPE_CODE_MODULE:
{
- /* NOTE: carlton/2003-11-10: We don't treat C++ class members
- of classes like, say, data or function members. Instead,
- they're just represented by symbols whose names are
- qualified by the name of the surrounding class. This is
- just like members of namespaces; in particular,
- lookup_symbol_namespace works when looking them up. */
-
- const char *parent_name = TYPE_TAG_NAME (parent_type);
- struct symbol *sym = cp_lookup_symbol_namespace (parent_name,
- nested_name,
- NULL,
- block,
- VAR_DOMAIN);
- if (sym == NULL || SYMBOL_CLASS (sym) != LOC_TYPEDEF)
- return NULL;
- else
- return SYMBOL_TYPE (sym);
+ int size;
+ const char *parent_name = type_name_no_tag_or_error (saved_parent_type);
+ struct block_symbol sym;
+ char *concatenated_name;
+ int is_in_anonymous;
+
+ size = strlen (parent_name) + 2 + strlen (nested_name) + 1;
+ concatenated_name = (char *) alloca (size);
+ xsnprintf (concatenated_name, size, "%s::%s",
+ parent_name, nested_name);
+ is_in_anonymous = cp_is_in_anonymous (concatenated_name);
+
+ sym = cp_lookup_nested_symbol_1 (parent_type, nested_name,
+ concatenated_name, block, domain,
+ 1, is_in_anonymous);
+
+ if (symbol_lookup_debug)
+ {
+ fprintf_unfiltered (gdb_stdlog,
+ "cp_lookup_nested_symbol (...) = %s\n",
+ (sym.symbol != NULL
+ ? host_address_to_string (sym.symbol)
+ : "NULL"));
+ }
+ return sym;
}
+
+ case TYPE_CODE_FUNC:
+ case TYPE_CODE_METHOD:
+ if (symbol_lookup_debug)
+ {
+ fprintf_unfiltered (gdb_stdlog,
+ "cp_lookup_nested_symbol (...) = NULL"
+ " (func/method)\n");
+ }
+ return null_block_symbol;
+
default:
internal_error (__FILE__, __LINE__,
- _("cp_lookup_nested_type called on a non-aggregate type."));
+ _("cp_lookup_nested_symbol called "
+ "on a non-aggregate type."));
}
}
/* FIXME: carlton/2004-01-16: The problem that this is trying to
address is that, unfortunately, sometimes NAME is wrong: it may not
include the name of namespaces enclosing the type in question.
- lookup_transparent_type gets called when the the type in question
+ lookup_transparent_type gets called when the type in question
is a declaration, and we're trying to find its definition; but, for
declarations, our type name deduction mechanism doesn't work.
There's nothing we can do to fix this in general, I think, in the
return cp_lookup_transparent_type_loop (name, scope, 0);
}
-/* Lookup the the type definition associated to NAME in
- namespaces/classes containing SCOPE whose name is strictly longer
- than LENGTH. LENGTH must be the index of the start of a
- component of SCOPE. */
+/* Lookup the type definition associated to NAME in namespaces/classes
+ containing SCOPE whose name is strictly longer than LENGTH. LENGTH
+ must be the index of the start of a component of SCOPE. */
static struct type *
-cp_lookup_transparent_type_loop (const char *name, const char *scope,
+cp_lookup_transparent_type_loop (const char *name,
+ const char *scope,
int length)
{
int scope_length = length + cp_find_first_component (scope + length);
if (scope[scope_length] == ':')
{
struct type *retval
- = cp_lookup_transparent_type_loop (name, scope, scope_length + 2);
+ = cp_lookup_transparent_type_loop (name, scope,
+ scope_length + 2);
+
if (retval != NULL)
return retval;
}
- full_name = alloca (scope_length + 2 + strlen (name) + 1);
+ full_name = (char *) alloca (scope_length + 2 + strlen (name) + 1);
strncpy (full_name, scope, scope_length);
strncpy (full_name + scope_length, "::", 2);
strcpy (full_name + scope_length + 2, name);
return basic_lookup_transparent_type (full_name);
}
-/* Now come functions for dealing with symbols associated to
- namespaces. (They're used to store the namespaces themselves, not
- objects that live in the namespaces.) These symbols come in two
- varieties: if we run into a DW_TAG_namespace DIE, then we know that
- we have a namespace, so dwarf2read.c creates a symbol for it just
- like normal. But, unfortunately, versions of GCC through at least
- 3.3 don't generate those DIE's. Our solution is to try to guess
- their existence by looking at demangled names. This might cause us
- to misidentify classes as namespaces, however. So we put those
- symbols in a special block (one per objfile), and we only search
- that block as a last resort. */
-
-/* FIXME: carlton/2003-06-12: Once versions of GCC that generate
- DW_TAG_namespace have been out for a year or two, we should get rid
- of all of this "possible namespace" nonsense. */
-
-/* Allocate everything necessary for the possible namespace block
- associated to OBJFILE. */
-
-static void
-initialize_namespace_symtab (struct objfile *objfile)
-{
- struct symtab *namespace_symtab;
- struct blockvector *bv;
- struct block *bl;
-
- namespace_symtab = allocate_symtab ("<<C++-namespaces>>", objfile);
- namespace_symtab->language = language_cplus;
- namespace_symtab->free_code = free_nothing;
- namespace_symtab->dirname = NULL;
-
- bv = obstack_alloc (&objfile->objfile_obstack,
- sizeof (struct blockvector)
- + FIRST_LOCAL_BLOCK * sizeof (struct block *));
- BLOCKVECTOR_NBLOCKS (bv) = FIRST_LOCAL_BLOCK + 1;
- BLOCKVECTOR (namespace_symtab) = bv;
-
- /* Allocate empty GLOBAL_BLOCK and STATIC_BLOCK. */
-
- bl = allocate_block (&objfile->objfile_obstack);
- BLOCK_DICT (bl) = dict_create_linear (&objfile->objfile_obstack,
- NULL);
- BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl;
- bl = allocate_block (&objfile->objfile_obstack);
- BLOCK_DICT (bl) = dict_create_linear (&objfile->objfile_obstack,
- NULL);
- BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK) = bl;
-
- /* Allocate the possible namespace block; we put it where the first
- local block will live, though I don't think there's any need to
- pretend that it's actually a local block (e.g. by setting
- BLOCK_SUPERBLOCK appropriately). We don't use the global or
- static block because we don't want it searched during the normal
- search of all global/static blocks in lookup_symbol: we only want
- it used as a last resort. */
-
- /* NOTE: carlton/2003-09-11: I considered not associating the fake
- symbols to a block/symtab at all. But that would cause problems
- with lookup_symbol's SYMTAB argument and with block_found, so
- having a symtab/block for this purpose seems like the best
- solution for now. */
-
- bl = allocate_block (&objfile->objfile_obstack);
- BLOCK_DICT (bl) = dict_create_hashed_expandable ();
- BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK) = bl;
-
- namespace_symtab->free_func = free_namespace_block;
-
- objfile->cp_namespace_symtab = namespace_symtab;
-}
-
-/* Locate the possible namespace block associated to OBJFILE,
- allocating it if necessary. */
-
-static struct block *
-get_possible_namespace_block (struct objfile *objfile)
-{
- if (objfile->cp_namespace_symtab == NULL)
- initialize_namespace_symtab (objfile);
-
- return BLOCKVECTOR_BLOCK (BLOCKVECTOR (objfile->cp_namespace_symtab),
- FIRST_LOCAL_BLOCK);
-}
-
-/* Free the dictionary associated to the possible namespace block. */
-
-static void
-free_namespace_block (struct symtab *symtab)
-{
- struct block *possible_namespace_block;
-
- possible_namespace_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab),
- FIRST_LOCAL_BLOCK);
- gdb_assert (possible_namespace_block != NULL);
- dict_free (BLOCK_DICT (possible_namespace_block));
-}
-
-/* Ensure that there are symbols in the possible namespace block
- associated to OBJFILE for all initial substrings of NAME that look
- like namespaces or classes. NAME should end in a member variable:
- it shouldn't consist solely of namespaces. */
-
-void
-cp_check_possible_namespace_symbols (const char *name, struct objfile *objfile)
-{
- check_possible_namespace_symbols_loop (name,
- cp_find_first_component (name),
- objfile);
-}
-
-/* This is a helper loop for cp_check_possible_namespace_symbols; it
- ensures that there are symbols in the possible namespace block
- associated to OBJFILE for all namespaces that are initial
- substrings of NAME of length at least LEN. It returns 1 if a
- previous loop had already created the shortest such symbol and 0
- otherwise.
-
- This function assumes that if there is already a symbol associated
- to a substring of NAME of a given length, then there are already
- symbols associated to all substrings of NAME whose length is less
- than that length. So if cp_check_possible_namespace_symbols has
- been called once with argument "A::B::C::member", then that will
- create symbols "A", "A::B", and "A::B::C". If it is then later
- called with argument "A::B::D::member", then the new call will
- generate a new symbol for "A::B::D", but once it sees that "A::B"
- has already been created, it doesn't bother checking to see if "A"
- has also been created. */
-
-static int
-check_possible_namespace_symbols_loop (const char *name, int len,
- struct objfile *objfile)
-{
- if (name[len] == ':')
- {
- int done;
- int next_len = len + 2;
-
- next_len += cp_find_first_component (name + next_len);
- done = check_possible_namespace_symbols_loop (name, next_len,
- objfile);
-
- if (!done)
- done = check_one_possible_namespace_symbol (name, len, objfile);
-
- return done;
- }
- else
- return 0;
-}
-
-/* Check to see if there's already a possible namespace symbol in
- OBJFILE whose name is the initial substring of NAME of length LEN.
- If not, create one and return 0; otherwise, return 1. */
-
-static int
-check_one_possible_namespace_symbol (const char *name, int len,
- struct objfile *objfile)
-{
- struct block *block = get_possible_namespace_block (objfile);
- char *name_copy = alloca (len + 1);
- struct symbol *sym;
-
- memcpy (name_copy, name, len);
- name_copy[len] = '\0';
- sym = lookup_block_symbol (block, name_copy, NULL, VAR_DOMAIN);
-
- if (sym == NULL)
- {
- struct type *type;
- name_copy = obsavestring (name, len, &objfile->objfile_obstack);
-
- type = init_type (TYPE_CODE_NAMESPACE, 0, 0, name_copy, objfile);
-
- TYPE_TAG_NAME (type) = TYPE_NAME (type);
-
- sym = obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol));
- memset (sym, 0, sizeof (struct symbol));
- SYMBOL_LANGUAGE (sym) = language_cplus;
- SYMBOL_SET_NAMES (sym, name_copy, len, objfile);
- SYMBOL_CLASS (sym) = LOC_TYPEDEF;
- SYMBOL_TYPE (sym) = type;
- SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
-
- dict_add_symbol (BLOCK_DICT (block), sym);
-
- return 0;
- }
- else
- return 1;
-}
-
-/* Look for a symbol named NAME in all the possible namespace blocks.
- If one is found, return it. */
-
-static struct symbol *
-lookup_possible_namespace_symbol (const char *name)
-{
- struct objfile *objfile;
-
- ALL_OBJFILES (objfile)
- {
- struct symbol *sym;
-
- sym = lookup_block_symbol (get_possible_namespace_block (objfile),
- name, NULL, VAR_DOMAIN);
-
- if (sym != NULL)
- return sym;
- }
-
- return NULL;
-}
-
-/* Print out all the possible namespace symbols. */
+/* This used to do something but was removed when it became
+ obsolete. */
static void
maintenance_cplus_namespace (char *args, int from_tty)
{
- struct objfile *objfile;
- printf_unfiltered (_("Possible namespaces:\n"));
- ALL_OBJFILES (objfile)
- {
- struct dict_iterator iter;
- struct symbol *sym;
-
- ALL_BLOCK_SYMBOLS (get_possible_namespace_block (objfile), iter, sym)
- {
- printf_unfiltered ("%s\n", SYMBOL_PRINT_NAME (sym));
- }
- }
+ printf_unfiltered (_("The `maint namespace' command was removed.\n"));
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void
_initialize_cp_namespace (void)
{
- add_cmd ("namespace", class_maintenance, maintenance_cplus_namespace,
- _("Print the list of possible C++ namespaces."),
- &maint_cplus_cmd_list);
+ struct cmd_list_element *cmd;
+
+ cmd = add_cmd ("namespace", class_maintenance,
+ maintenance_cplus_namespace,
+ _("Deprecated placeholder for removed functionality."),
+ &maint_cplus_cmd_list);
+ deprecate_cmd (cmd, NULL);
}
projects / deliverable / binutils-gdb.git / blobdiff