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2010-03-15 Sami Wagiaalla <swagiaal@redhat.com>

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PR c++/7936:
        * cp-support.h: Added char *declaration element to using_direct
        data struct.
        (cp_add_using): Added char *declaration argument.
        (cp_add_using_directive): Ditto.
        (cp_lookup_symbol_imports): made extern.
        * cp-namespace.c: Updated with the above changes.
        * dwarf2read.c (read_import_statement): Ditto.
        (read_namespace): Ditto.
        (read_import_statement): Support import declarations.
        * cp-namespace.c (cp_lookup_symbol_imports): Check for imported
        declarations.
        Added support for 'declaration_only' search.
        (cp_lookup_symbol_namespace): Attempt to search for the name as
        is before consideration of imports.
        * symtab.c (lookup_symbol_aux_local): Added a 'declaration_only'
        search at every block level search.
        Now takes language argument.
        (lookup_symbol_aux): Updated.

    2010-03-15  Sami Wagiaalla  <swagiaal@redhat.com>

        * gdb.cp/shadow.exp: Removed kfail; test has been fix.
        * gdb.cp/nsusing.exp: Ditto.
This commit is contained in:
Sami Wagiaalla 2010-03-15 17:29:36 +00:00
parent 6e31430b70
commit 13387711b2
11 changed files with 157 additions and 45 deletions
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84
gdb/cp-namespace.c
View file

@ -115,7 +115,7 @@ cp_scan_for_anonymous_namespaces (const struct symbol *symbol)
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 (dest, src, NULL,
cp_add_using_directive (dest, src, NULL, NULL,
&SYMBOL_SYMTAB (symbol)->objfile->objfile_obstack);
}
/* The "+ 2" is for the "::". */
@ -133,16 +133,20 @@ cp_scan_for_anonymous_namespaces (const struct symbol *symbol)
Create a new struct using_direct which imports the namespace SRC into the
scope DEST. ALIAS is the name of the imported namespace in the current
scope. If ALIAS is NULL then the namespace is known by its original name.
The arguments are copied into newly allocated memory so they can be
temporaries. */
DECLARATION is the name if the imported varable if this is a declaration
import (Eg. using A::x), otherwise it is NULL. The arguments are copied
into newly allocated memory so they can be temporaries. */
void
cp_add_using_directive (const char *dest, const char *src, const char *alias,
cp_add_using_directive (const char *dest,
const char *src,
const char *alias,
const char *declaration,
struct obstack *obstack)
{
struct using_direct *current;
struct using_direct *new;
/* Has it already been added? */
for (current = using_directives; current != NULL; current = current->next)
@ -151,7 +155,10 @@ cp_add_using_directive (const char *dest, const char *src, const char *alias,
&& strcmp (current->import_dest, dest) == 0
&& ((alias == NULL && current->alias == NULL)
|| (alias != NULL && current->alias != NULL
&& strcmp (alias, current->alias) == 0)))
&& strcmp (alias, current->alias) == 0))
&& ((declaration == NULL && current->declaration == NULL)
|| (declaration != NULL && current->declaration != NULL
&& strcmp (declaration, current->declaration) == 0)))
return;
}
@ -163,6 +170,10 @@ cp_add_using_directive (const char *dest, const char *src, const char *alias,
if (alias != NULL)
new->alias = obsavestring (alias, strlen (alias), obstack);
if (declaration != NULL)
new->declaration = obsavestring (declaration, strlen (declaration),
obstack);
new->next = using_directives;
using_directives = new;
}
@ -234,10 +245,10 @@ cp_lookup_symbol_nonlocal (const char *name,
if (sym != NULL)
return sym;
return cp_lookup_symbol_namespace (scope, name, block, domain, 1);
return cp_lookup_symbol_namespace (scope, name, block, domain);
}
/* Look up NAME in the C++ namespace NAMESPACE. Other arguments are as in
/* Look up NAME in the C++ namespace NAMESPACE. Other arguments are as in
cp_lookup_symbol_nonlocal. */
static struct symbol *
@ -273,7 +284,15 @@ reset_directive_searched (void *data)
}
/* Search for NAME by applying all import statements belonging
to BLOCK which are applicable in SCOPE.
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:
@ -286,24 +305,27 @@ reset_directive_searched (void *data)
}
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
and Y will be considered. If SEARCH_PARENTS is false only the import of Y
is considered. */
static struct symbol *
struct symbol *
cp_lookup_symbol_imports (const char *scope,
const char *name,
const struct block *block,
const domain_enum domain,
const int declaration_only,
const int search_parents)
{
struct using_direct *current;
struct symbol *sym;
struct symbol *sym = NULL;
int len;
int directive_match;
struct cleanup *searched_cleanup;
/* First, try to find the symbol in the given namespace. */
sym = cp_lookup_symbol_in_namespace (scope, name, block, domain);
if (!declaration_only)
sym = cp_lookup_symbol_in_namespace (scope, name, block, domain);
if (sym != NULL)
return sym;
@ -332,6 +354,30 @@ cp_lookup_symbol_imports (const char *scope,
current->searched = 1;
searched_cleanup = make_cleanup (reset_directive_searched, current);
/* If there is an import of a single declaration, compare the imported
declaration 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->declaration) == 0)
sym = cp_lookup_symbol_in_namespace (current->import_src,
name,
block,
domain);
/* 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 != NULL || current->declaration)
{
current->searched = 0;
discard_cleanups (searched_cleanup);
if (sym != NULL)
return sym;
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
@ -350,6 +396,7 @@ cp_lookup_symbol_imports (const char *scope,
name,
block,
domain,
0,
0);
}
current->searched = 0;
@ -371,16 +418,19 @@ struct symbol*
cp_lookup_symbol_namespace (const char *scope,
const char *name,
const struct block *block,
const domain_enum domain,
const int search_parents)
const domain_enum domain)
{
struct symbol *sym;
/* First, try to find the symbol in the given namespace. */
sym = cp_lookup_symbol_in_namespace (scope, name, block, domain);
if (sym != NULL)
return sym;
/* Search for name in namespaces imported to this and parent blocks. */
while (block != NULL)
{
sym = cp_lookup_symbol_imports (scope, name, block, domain,
search_parents);
sym = cp_lookup_symbol_imports (scope, name, block, domain, 0, 1);
if (sym)
return sym;