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class.c (currently_open_class): New fn.

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* class.c (currently_open_class): New fn.
	* decl.c (lookup_name_real): Use it.
	* search.c (lookup_field): Likewise.

From-SVN: r19650
This commit is contained in:
Jason Merrill 1998-05-09 14:10:28 -04:00
parent 6e940d05f4
commit b9082e8adb
4 changed files with 36 additions and 14 deletions
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8
gcc/cp/ChangeLog
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@ -1,4 +1,10 @@
Mon Apr 27 07:17:38 1998 Martin von Loewis <loewis@informatik.hu-berlin.de>
Sat May 9 14:44:37 1998 Jason Merrill <jason@yorick.cygnus.com>
* class.c (currently_open_class): New fn.
* decl.c (lookup_name_real): Use it.
* search.c (lookup_field): Likewise.
Fri May 8 23:32:42 1998 Martin von Loewis <loewis@informatik.hu-berlin.de>
* cp-tree.def (OVERLOAD): New node.
* cp-tree.h (BINDING_TYPE, SET_IDENTIFIER_GLOBAL_VALUE,

15
gcc/cp/class.c
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@ -4822,6 +4822,21 @@ popclass (modify)
;
}
/* Returns 1 if current_class_type is either T or a nested type of T. */
int
currently_open_class (t)
tree t;
{
int i;
if (t == current_class_type)
return 1;
for (i = 0; i < current_class_depth; ++i)
if (current_class_stack [-i*2 - 1] == t)
return 1;
return 0;
}
/* When entering a class scope, all enclosing class scopes' names with
static meaning (static variables, static functions, types and enumerators)
have to be visible. This recursive function calls pushclass for all

19
gcc/cp/decl.c
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@ -4826,20 +4826,21 @@ lookup_name_real (name, prefer_type, nonclass)
TYPE_DECLs. */
classval = lookup_field (current_class_type, name, 0, 1);
/* Add implicit 'typename' to types from template bases. lookup_field
will do this for us. If classval is actually from an enclosing
scope, lookup_nested_field will get it for us. */
if (processing_template_decl
&& classval && TREE_CODE (classval) == TYPE_DECL
&& ! currently_open_class (DECL_CONTEXT (classval))
&& uses_template_parms (current_class_type)
&& ! DECL_ARTIFICIAL (classval))
classval = lookup_field (current_class_type, name, 0, 1);
/* yylex() calls this with -2, since we should never start digging for
the nested name at the point where we haven't even, for example,
created the COMPONENT_REF or anything like that. */
if (classval == NULL_TREE)
classval = lookup_nested_field (name, ! yylex);
/* Add implicit 'typename' to types from template bases. lookup_field
will do this for us. */
if (processing_template_decl
&& classval && TREE_CODE (classval) == TYPE_DECL
&& DECL_CONTEXT (classval) != current_class_type
&& uses_template_parms (current_class_type)
&& ! DECL_ARTIFICIAL (classval))
classval = lookup_field (current_class_type, name, 0, 1);
}
if (locval && classval)

8
gcc/cp/search.c
View File

@ -1549,7 +1549,7 @@ lookup_field (xbasetype, name, protect, want_type)
if (rval && TREE_CODE (rval) == TYPE_DECL
&& ! DECL_ARTIFICIAL (rval)
&& processing_template_decl
&& BINFO_TYPE (rval_binfo) != current_class_type
&& ! currently_open_class (BINFO_TYPE (rval_binfo))
&& uses_template_parms (type))
{
binfo = rval_binfo;
@ -1577,14 +1577,14 @@ lookup_nested_field (name, complain)
register tree t;
tree id = NULL_TREE;
if (TREE_CHAIN (current_class_type))
if (TYPE_MAIN_DECL (current_class_type))
{
/* Climb our way up the nested ladder, seeing if we're trying to
modify a field in an enclosing class. If so, we should only
be able to modify if it's static. */
for (t = TREE_CHAIN (current_class_type);
for (t = TYPE_MAIN_DECL (current_class_type);
t && DECL_CONTEXT (t);
t = TREE_CHAIN (DECL_CONTEXT (t)))
t = TYPE_MAIN_DECL (DECL_CONTEXT (t)))
{
if (TREE_CODE (DECL_CONTEXT (t)) != RECORD_TYPE)
break;