1 /* Perform the semantic phase of parsing, i.e., the process of
2 building tree structure, checking semantic consistency, and
3 building RTL. These routines are used both during actual parsing
4 and during the instantiation of template functions.
6 Copyright (C) 1998 Free Software Foundation, Inc.
7 Written by Mark Mitchell (mmitchell@usa.net) based on code found
8 formerly in parse.y and pt.c.
10 This file is part of GNU CC.
12 GNU CC is free software; you can redistribute it and/or modify it
13 under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2, or (at your option)
17 GNU CC is distributed in the hope that it will be useful, but
18 WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with GNU CC; see the file COPYING. If not, write to the Free
24 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
35 /* There routines provide a modular interface to perform many parsing
36 operations. They may therefore be used during actual parsing, or
37 during template instantiation, which may be regarded as a
38 degenerate form of parsing. Since the current g++ parser is
39 lacking in several respects, and will be reimplemented, we are
40 attempting to move most code that is not directly related to
41 parsing into this file; that will make implementing the new parser
42 much easier since it will be able to make use of these routines. */
44 /* When parsing a template, LAST_TREE contains the last statement
45 parsed. These are chained together through the TREE_CHAIN field,
46 but often need to be re-organized since the parse is performed
47 bottom-up. This macro makes LAST_TREE the indicated SUBSTMT of
50 #define RECHAIN_STMTS(stmt, substmt, last) \
53 TREE_CHAIN (stmt) = NULL_TREE; \
57 #define RECHAIN_STMTS_FROM_LAST(stmt, substmt) \
58 RECHAIN_STMTS (stmt, substmt, last_tree)
60 #define RECHAIN_STMTS_FROM_CHAIN(stmt, substmt) \
61 RECHAIN_STMTS (stmt, substmt, TREE_CHAIN (stmt))
63 /* Finish an expression-statement, whose EXPRESSION is as indicated. */
66 finish_expr_stmt (expr)
69 if (expr != NULL_TREE)
71 if (!processing_template_decl)
73 emit_line_note (input_filename, lineno);
74 /* Do default conversion if safe and possibly important,
75 in case within ({...}). */
76 if ((TREE_CODE (TREE_TYPE (expr)) == ARRAY_TYPE
78 || TREE_CODE (TREE_TYPE (expr)) == FUNCTION_TYPE)
79 expr = default_conversion (expr);
82 cplus_expand_expr_stmt (expr);
89 /* Begin an if-statement. Returns a newly created IF_STMT if
97 if (processing_template_decl)
99 r = build_min_nt (IF_STMT, NULL_TREE, NULL_TREE, NULL_TREE);
110 /* Process the COND of an if-statement, which may be given by
114 finish_if_stmt_cond (cond, if_stmt)
118 if (processing_template_decl)
120 if (last_tree != if_stmt)
121 RECHAIN_STMTS_FROM_LAST (if_stmt, IF_COND (if_stmt));
123 IF_COND (if_stmt) = cond;
127 emit_line_note (input_filename, lineno);
128 expand_start_cond (condition_conversion (cond), 0);
132 /* Finish the then-clause of an if-statement, which may be given by
136 finish_then_clause (if_stmt)
139 if (processing_template_decl)
141 RECHAIN_STMTS_FROM_CHAIN (if_stmt,
142 THEN_CLAUSE (if_stmt));
150 /* Begin the else-clause of an if-statement. */
155 if (!processing_template_decl)
156 expand_start_else ();
159 /* Finish the else-clause of an if-statement, which may be given by
163 finish_else_clause (if_stmt)
166 if (processing_template_decl)
167 RECHAIN_STMTS_FROM_CHAIN (if_stmt, ELSE_CLAUSE (if_stmt));
170 /* Finsh an if-statement. */
175 if (!processing_template_decl)
182 /* Begin a while-statement. Returns a newly created WHILE_STMT if
190 if (processing_template_decl)
192 r = build_min_nt (WHILE_STMT, NULL_TREE, NULL_TREE);
198 emit_line_note (input_filename, lineno);
199 expand_start_loop (1);
208 /* Process the COND of an if-statement, which may be given by
212 finish_while_stmt_cond (cond, while_stmt)
216 if (processing_template_decl)
218 if (last_tree != while_stmt)
219 RECHAIN_STMTS_FROM_LAST (while_stmt,
220 WHILE_COND (while_stmt));
222 TREE_OPERAND (while_stmt, 0) = cond;
226 emit_line_note (input_filename, lineno);
227 expand_exit_loop_if_false (0, condition_conversion (cond));
230 /* If COND wasn't a declaration, clear out the
231 block we made for it and start a new one here so the
232 optimization in expand_end_loop will work. */
233 if (getdecls () == NULL_TREE)
240 /* Finish a while-statement, which may be given by WHILE_STMT. */
243 finish_while_stmt (while_stmt)
248 if (processing_template_decl)
249 RECHAIN_STMTS_FROM_CHAIN (while_stmt, WHILE_BODY (while_stmt));
255 /* Begin a do-statement. Returns a newly created DO_STMT if
261 if (processing_template_decl)
263 tree r = build_min_nt (DO_STMT, NULL_TREE, NULL_TREE);
270 emit_line_note (input_filename, lineno);
271 expand_start_loop_continue_elsewhere (1);
276 /* Finish the body of a do-statement, which may be given by DO_STMT. */
279 finish_do_body (do_stmt)
282 if (processing_template_decl)
283 RECHAIN_STMTS_FROM_CHAIN (do_stmt, DO_BODY (do_stmt));
285 expand_loop_continue_here ();
288 /* Finish a do-statement, which may be given by DO_STMT, and whose
289 COND is as indicated. */
292 finish_do_stmt (cond, do_stmt)
296 if (processing_template_decl)
297 DO_COND (do_stmt) = cond;
300 emit_line_note (input_filename, lineno);
301 expand_exit_loop_if_false (0, condition_conversion (cond));
309 /* Finish a return-statement. The EXPRESSION returned, if any, is as
313 finish_return_stmt (expr)
316 emit_line_note (input_filename, lineno);
317 c_expand_return (expr);
321 /* Begin a for-statement. Returns a new FOR_STMT if appropriate. */
328 if (processing_template_decl)
330 r = build_min_nt (FOR_STMT, NULL_TREE, NULL_TREE,
331 NULL_TREE, NULL_TREE);
337 if (flag_new_for_scope > 0)
340 note_level_for_for ();
346 /* Finish the for-init-statement of a for-statement, which may be
347 given by FOR_STMT. */
350 finish_for_init_stmt (for_stmt)
353 if (processing_template_decl)
355 if (last_tree != for_stmt)
356 RECHAIN_STMTS_FROM_CHAIN (for_stmt, FOR_INIT_STMT (for_stmt));
361 emit_line_note (input_filename, lineno);
362 expand_start_loop_continue_elsewhere (1);
368 /* Finish the COND of a for-statement, which may be given by
372 finish_for_cond (cond, for_stmt)
376 if (processing_template_decl)
378 if (last_tree != for_stmt)
379 RECHAIN_STMTS_FROM_LAST (for_stmt, FOR_COND (for_stmt));
381 FOR_COND (for_stmt) = cond;
385 emit_line_note (input_filename, lineno);
387 expand_exit_loop_if_false (0, condition_conversion (cond));
390 /* If the cond wasn't a declaration, clear out the
391 block we made for it and start a new one here so the
392 optimization in expand_end_loop will work. */
393 if (getdecls () == NULL_TREE)
400 /* Finish the increment-EXPRESSION in a for-statement, which may be
401 given by FOR_STMT. */
404 finish_for_expr (expr, for_stmt)
408 if (processing_template_decl)
409 FOR_EXPR (for_stmt) = expr;
411 /* Don't let the tree nodes for EXPR be discarded
412 by clear_momentary during the parsing of the next stmt. */
416 /* Finish the body of a for-statement, which may be given by
417 FOR_STMT. The increment-EXPR for the loop must be
421 finish_for_stmt (expr, for_stmt)
425 /* Pop the scope for the body of the loop. */
428 if (processing_template_decl)
429 RECHAIN_STMTS_FROM_CHAIN (for_stmt, FOR_BODY (for_stmt));
432 emit_line_note (input_filename, lineno);
433 expand_loop_continue_here ();
435 cplus_expand_expr_stmt (expr);
441 if (flag_new_for_scope > 0)
447 /* Finish a break-statement. */
452 emit_line_note (input_filename, lineno);
453 if (processing_template_decl)
454 add_tree (build_min_nt (BREAK_STMT));
455 else if ( ! expand_exit_something ())
456 cp_error ("break statement not within loop or switch");
459 /* Finish a continue-statement. */
462 finish_continue_stmt ()
464 emit_line_note (input_filename, lineno);
465 if (processing_template_decl)
466 add_tree (build_min_nt (CONTINUE_STMT));
467 else if (! expand_continue_loop (0))
468 cp_error ("continue statement not within a loop");
471 /* Begin a switch-statement. */
479 /* Finish the cond of a switch-statement. Returns a new
480 SWITCH_STMT if appropriate. */
483 finish_switch_cond (cond)
488 if (processing_template_decl)
490 r = build_min_nt (SWITCH_STMT, cond, NULL_TREE);
495 emit_line_note (input_filename, lineno);
496 c_expand_start_case (cond);
501 /* Don't let the tree nodes for COND be discarded by
502 clear_momentary during the parsing of the next stmt. */
508 /* Finish the body of a switch-statement, which may be given by
509 SWITCH_STMT. The COND to switch on is indicated. */
512 finish_switch_stmt (cond, switch_stmt)
516 if (processing_template_decl)
517 RECHAIN_STMTS_FROM_CHAIN (switch_stmt, SWITCH_BODY (switch_stmt));
519 expand_end_case (cond);
526 /* Finish a case-label. */
529 finish_case_label (low_value, high_value)
533 do_case (low_value, high_value);
537 /* Finish a goto-statement. */
540 finish_goto_stmt (destination)
543 if (processing_template_decl)
544 add_tree (build_min_nt (GOTO_STMT, destination));
547 emit_line_note (input_filename, lineno);
549 if (TREE_CODE (destination) == IDENTIFIER_NODE)
551 tree decl = lookup_label (destination);
552 TREE_USED (decl) = 1;
556 expand_computed_goto (destination);
560 /* Begin a try-block. Returns a newly-created TRY_BLOCK if
566 if (processing_template_decl)
568 tree r = build_min_nt (TRY_BLOCK, NULL_TREE,
575 emit_line_note (input_filename, lineno);
576 expand_start_try_stmts ();
581 /* Finish a try-block, which may be given by TRY_BLOCK. */
584 finish_try_block (try_block)
587 if (processing_template_decl)
588 RECHAIN_STMTS_FROM_LAST (try_block, TRY_STMTS (try_block));
591 expand_start_all_catch ();
592 expand_start_catch (NULL);
596 /* Finish a handler-sequence for a try-block, which may be given by
600 finish_handler_sequence (try_block)
603 if (processing_template_decl)
604 RECHAIN_STMTS_FROM_CHAIN (try_block, TRY_HANDLERS (try_block));
608 expand_end_all_catch ();
612 /* Begin a handler. Returns a HANDLER if appropriate. */
619 if (processing_template_decl)
621 r = build_min_nt (HANDLER, NULL_TREE, NULL_TREE);
632 /* Finish the handler-parameters for a handler, which may be given by
636 finish_handler_parms (handler)
639 if (processing_template_decl)
640 RECHAIN_STMTS_FROM_CHAIN (handler, HANDLER_PARMS (handler));
643 /* Finish a handler, which may be given by HANDLER. */
646 finish_handler (handler)
649 if (processing_template_decl)
650 RECHAIN_STMTS_FROM_CHAIN (handler, HANDLER_BODY (handler));
652 expand_end_catch_block ();
657 /* Begin a compound-statement. If HAS_NO_SCOPE is non-zero, the
658 compound-statement does not define a scope. Returns a new
659 COMPOUND_STMT if appropriate. */
662 begin_compound_stmt (has_no_scope)
667 if (processing_template_decl)
669 r = build_min_nt (COMPOUND_STMT, NULL_TREE);
672 COMPOUND_STMT_NO_SCOPE (r) = 1;
684 /* Finish a compound-statement, which may be given by COMPOUND_STMT.
685 If HAS_NO_SCOPE is non-zero, the compound statement does not define
689 finish_compound_stmt (has_no_scope, compound_stmt)
700 if (processing_template_decl)
701 RECHAIN_STMTS_FROM_CHAIN (compound_stmt,
702 COMPOUND_BODY (compound_stmt));
709 /* Finish an asm-statement, whose components are a CV_QUALIFIER, a
710 STRING, some OUTPUT_OPERANDS, some INPUT_OPERANDS, and some
714 finish_asm_stmt (cv_qualifier, string, output_operands,
715 input_operands, clobbers)
718 tree output_operands;
722 if (TREE_CHAIN (string))
723 string = combine_strings (string);
725 if (processing_template_decl)
727 tree r = build_min_nt (ASM_STMT, cv_qualifier, string,
728 output_operands, input_operands,
734 emit_line_note (input_filename, lineno);
735 if (output_operands != NULL_TREE || input_operands != NULL_TREE
736 || clobbers != NULL_TREE)
738 if (cv_qualifier != NULL_TREE
739 && cv_qualifier != ridpointers[(int) RID_VOLATILE])
740 cp_warning ("%s qualifier ignored on asm",
741 IDENTIFIER_POINTER (cv_qualifier));
743 c_expand_asm_operands (string, output_operands,
747 == ridpointers[(int) RID_VOLATILE],
748 input_filename, lineno);
752 if (cv_qualifier != NULL_TREE)
753 cp_warning ("%s qualifier ignored on asm",
754 IDENTIFIER_POINTER (cv_qualifier));
762 /* Finish a parenthesized expression EXPR. */
765 finish_parenthesized_expr (expr)
768 if (IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (TREE_CODE (expr))))
769 /* This inhibits warnings in truthvalue_conversion. */
770 C_SET_EXP_ORIGINAL_CODE (expr, ERROR_MARK);
775 /* Begin a statement-expression. The value returned must be passed to
782 /* If we're processing_template_decl, then the upcoming compound
783 statement will be chained onto the tree structure, starting at
784 last_tree. We return last_tree so that we can later unhook the
785 compound statement. */
786 return processing_template_decl ? last_tree : expand_start_stmt_expr();
789 /* Finish a statement-expression. RTL_EXPR should be the value
790 returned by the previous begin_stmt_expr; EXPR is the
791 statement-expression. Returns an expression representing the
792 statement-expression. */
795 finish_stmt_expr (rtl_expr, expr)
801 if (!processing_template_decl)
803 rtl_expr = expand_end_stmt_expr (rtl_expr);
804 /* The statements have side effects, so the group does. */
805 TREE_SIDE_EFFECTS (rtl_expr) = 1;
808 if (TREE_CODE (expr) == BLOCK)
810 /* Make a BIND_EXPR for the BLOCK already made. */
811 if (processing_template_decl)
812 result = build (BIND_EXPR, NULL_TREE,
813 NULL_TREE, last_tree, expr);
815 result = build (BIND_EXPR, TREE_TYPE (rtl_expr),
816 NULL_TREE, rtl_expr, expr);
818 /* Remove the block from the tree at this point.
819 It gets put back at the proper place
820 when the BIND_EXPR is expanded. */
826 if (processing_template_decl)
828 /* Remove the compound statement from the tree structure; it is
829 now saved in the BIND_EXPR. */
830 last_tree = rtl_expr;
831 TREE_CHAIN (last_tree) = NULL_TREE;
837 /* Finish a call to FN with ARGS. Returns a representation of the
841 finish_call_expr (fn, args)
845 tree result = build_x_function_call (fn, args, current_class_ref);
847 if (TREE_CODE (result) == CALL_EXPR
848 && TREE_TYPE (result) != void_type_node)
849 result = require_complete_type (result);
854 /* Finish a call to a postfix increment or decrement or EXPR. (Which
855 is indicated by CODE, which should be POSTINCREMENT_EXPR or
856 POSTDECREMENT_EXPR.) */
859 finish_increment_expr (expr, code)
863 /* If we get an OFFSET_REF, turn it into what it really means (e.g.,
864 a COMPONENT_REF). This way if we've got, say, a reference to a
865 static member that's being operated on, we don't end up trying to
866 find a member operator for the class it's in. */
868 if (TREE_CODE (expr) == OFFSET_REF)
869 expr = resolve_offset_ref (expr);
870 return build_x_unary_op (code, expr);
873 /* Finish a use of `this'. Returns an expression for `this'. */
880 if (current_class_ptr)
882 #ifdef WARNING_ABOUT_CCD
883 TREE_USED (current_class_ptr) = 1;
885 result = current_class_ptr;
887 else if (current_function_decl
888 && DECL_STATIC_FUNCTION_P (current_function_decl))
890 error ("`this' is unavailable for static member functions");
891 result = error_mark_node;
895 if (current_function_decl)
896 error ("invalid use of `this' in non-member function");
898 error ("invalid use of `this' at top level");
899 result = error_mark_node;
905 /* Finish a member function call using OBJECT and ARGS as arguments to
906 FN. Returns an expression for the call. */
909 finish_object_call_expr (fn, object, args)
915 /* This is a future direction of this code, but because
916 build_x_function_call cannot always undo what is done in
917 build_component_ref entirely yet, we cannot do this. */
919 tree real_fn = build_component_ref (object, fn, NULL_TREE, 1);
920 return finish_call_expr (real_fn, args);
922 if (TREE_CODE (fn) == TYPE_DECL)
924 cp_error ("calling type `%T' like a method", fn);
925 return error_mark_node;
928 return build_method_call (object, fn, args, NULL_TREE, LOOKUP_NORMAL);
932 /* Finish a qualified member function call using OBJECT and ARGS as
933 arguments to FN. Returns an expressino for the call. */
936 finish_qualified_object_call_expr (fn, object, args)
941 if (IS_SIGNATURE (TREE_OPERAND (fn, 0)))
943 warning ("signature name in scope resolution ignored");
944 return finish_object_call_expr (TREE_OPERAND (fn, 1), object, args);
947 return build_scoped_method_call (object, TREE_OPERAND (fn, 0),
948 TREE_OPERAND (fn, 1), args);
951 /* Finish a pseudo-destructor call expression of OBJECT, with SCOPE
952 being the scope, if any, of DESTRUCTOR. Returns an expression for
956 finish_pseudo_destructor_call_expr (object, scope, destructor)
961 if (scope && scope != destructor)
962 cp_error ("destructor specifier `%T::~%T()' must have matching names",
965 if ((scope == NULL_TREE || IDENTIFIER_GLOBAL_VALUE (destructor))
966 && (TREE_CODE (TREE_TYPE (object)) !=
967 TREE_CODE (TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (destructor)))))
968 cp_error ("`%E' is not of type `%T'", object, destructor);
970 return cp_convert (void_type_node, object);
973 /* Finish a call to a globally qualified member function FN using
974 ARGS. Returns an expression for the call. */
977 finish_globally_qualified_member_call_expr (fn, args)
981 if (processing_template_decl)
982 return build_min_nt (CALL_EXPR, copy_to_permanent (fn), args,
985 return build_member_call (TREE_OPERAND (fn, 0),
986 TREE_OPERAND (fn, 1),
990 /* Finish an expression taking the address of LABEL. Returns an
991 expression for the address. */
994 finish_label_address_expr (label)
999 label = lookup_label (label);
1000 if (label == NULL_TREE)
1001 result = null_pointer_node;
1004 TREE_USED (label) = 1;
1005 result = build1 (ADDR_EXPR, ptr_type_node, label);
1006 TREE_CONSTANT (result) = 1;
1012 /* Finish an expression of the form CODE EXPR. */
1015 finish_unary_op_expr (code, expr)
1016 enum tree_code code;
1019 tree result = build_x_unary_op (code, expr);
1020 if (code == NEGATE_EXPR && TREE_CODE (expr) == INTEGER_CST)
1021 TREE_NEGATED_INT (result) = 1;
1022 overflow_warning (result);
1026 /* Finish an id-expression. */
1029 finish_id_expr (expr)
1032 if (TREE_CODE (expr) == IDENTIFIER_NODE)
1033 expr = do_identifier (expr, 1);
1038 /* Begin a new-placement. */
1041 begin_new_placement ()
1043 /* The arguments to a placement new might be passed to a
1044 deallocation function, in the event that the allocation throws an
1045 exception. Since we don't expand exception handlers until the
1046 end of a function, we must make sure the arguments stay around
1048 return suspend_momentary ();
1051 /* Finish a new-placement. The ARGS are the placement arguments. The
1052 COOKIE is the value returned by the previous call to
1053 begin_new_placement. */
1056 finish_new_placement (args, cookie)
1060 resume_momentary (cookie);
1064 /* Begin a function defniition declared with DECL_SPECS and
1065 DECLARATOR. Returns non-zero if the function-declaration is
1069 begin_function_definition (decl_specs, declarator)
1075 split_specs_attrs (decl_specs, &specs, &attrs);
1076 if (!start_function (specs, declarator, attrs, 0))
1079 reinit_parse_for_function ();
1083 /* Begin a constructor declarator of the form `SCOPE::NAME'. Returns
1087 begin_constructor_declarator (scope, name)
1091 tree result = build_parse_node (SCOPE_REF, scope, name);
1093 if (scope != current_class_type)
1095 push_nested_class (scope, 3);
1096 TREE_COMPLEXITY (result) = current_class_depth;
1102 /* Finish an init-declarator. Returns a DECL. */
1105 finish_declarator (declarator, declspecs, attributes,
1106 prefix_attributes, initialized)
1110 tree prefix_attributes;
1113 return start_decl (declarator, declspecs, initialized, attributes,
1117 /* Finish a transltation unit. */
1120 finish_translation_unit ()
1122 /* In case there were missing closebraces,
1123 get us back to the global binding level. */
1124 while (! toplevel_bindings_p ())
1126 while (current_namespace != global_namespace)
1131 /* Finish a template type parameter, specified as AGGR IDENTIFIER.
1132 Returns the parameter. */
1135 finish_template_type_parm (aggr, identifier)
1139 if (aggr == signature_type_node)
1140 sorry ("signature as template type parameter");
1141 else if (aggr != class_type_node)
1143 pedwarn ("template type parameters must use the keyword `class' or `typename'");
1144 aggr = class_type_node;
1147 return build_tree_list (aggr, identifier);
1150 /* Finish a template template parameter, specified as AGGR IDENTIFIER.
1151 Returns the parameter. */
1154 finish_template_template_parm (aggr, identifier)
1158 tree decl = build_decl (TYPE_DECL, identifier, NULL_TREE);
1159 tree tmpl = build_lang_decl (TEMPLATE_DECL, identifier, NULL_TREE);
1160 DECL_TEMPLATE_PARMS (tmpl) = current_template_parms;
1161 DECL_TEMPLATE_RESULT (tmpl) = decl;
1162 SET_DECL_ARTIFICIAL (decl);
1163 end_template_decl ();
1165 return finish_template_type_parm (aggr, tmpl);
1168 /* Finish a parameter list, indicated by PARMS. If ELLIPSIS is
1169 non-zero, the parameter list was terminated by a `...'. */
1172 finish_parmlist (parms, ellipsis)
1177 chainon (parms, void_list_node);
1178 /* We mark the PARMS as a parmlist so that declarator processing can
1179 disambiguate certain constructs. */
1180 if (parms != NULL_TREE)
1181 TREE_PARMLIST (parms) = 1;
1186 /* Begin a class definition, as indicated by T. */
1189 begin_class_definition (t)
1194 push_obstacks_nochange ();
1195 end_temporary_allocation ();
1197 if (t == error_mark_node
1198 || ! IS_AGGR_TYPE (t))
1200 t = new_type = make_lang_type (RECORD_TYPE);
1201 pushtag (make_anon_name (), t, 0);
1204 duplicate_tag_error (t);
1205 if (TYPE_SIZE (t) || TYPE_BEING_DEFINED (t))
1207 t = make_lang_type (TREE_CODE (t));
1208 pushtag (TYPE_IDENTIFIER (t), t, 0);
1211 if (processing_template_decl && TYPE_CONTEXT (t)
1212 && TREE_CODE (TYPE_CONTEXT (t)) != NAMESPACE_DECL
1213 && ! current_class_type)
1214 push_template_decl (TYPE_STUB_DECL (t));
1216 TYPE_BEING_DEFINED (t) = 1;
1217 if (IS_AGGR_TYPE (t) && CLASSTYPE_USE_TEMPLATE (t))
1219 if (CLASSTYPE_IMPLICIT_INSTANTIATION (t)
1220 && TYPE_SIZE (t) == NULL_TREE)
1222 SET_CLASSTYPE_TEMPLATE_SPECIALIZATION (t);
1223 if (processing_template_decl)
1224 push_template_decl (TYPE_MAIN_DECL (t));
1226 else if (CLASSTYPE_TEMPLATE_INSTANTIATION (t))
1227 cp_error ("specialization after instantiation of `%T'", t);
1229 /* Reset the interface data, at the earliest possible
1230 moment, as it might have been set via a class foo;
1232 /* Don't change signatures. */
1233 if (! IS_SIGNATURE (t))
1235 extern tree pending_vtables;
1237 tree name = TYPE_IDENTIFIER (t);
1239 if (! ANON_AGGRNAME_P (name))
1241 CLASSTYPE_INTERFACE_ONLY (t) = interface_only;
1242 SET_CLASSTYPE_INTERFACE_UNKNOWN_X
1243 (t, interface_unknown);
1246 /* Record how to set the access of this class's
1247 virtual functions. If write_virtuals == 2 or 3, then
1248 inline virtuals are ``extern inline''. */
1249 switch (write_virtuals)
1256 needs_writing = !! value_member (name, pending_vtables);
1259 needs_writing = ! CLASSTYPE_INTERFACE_ONLY (t)
1260 && CLASSTYPE_INTERFACE_KNOWN (t);
1265 CLASSTYPE_VTABLE_NEEDS_WRITING (t) = needs_writing;
1268 t = TYPE_IDENTIFIER ($<ttype>0);
1269 if (t && IDENTIFIER_TEMPLATE (t))
1270 overload_template_name (t, 1);
1272 reset_specialization();
1274 /* In case this is a local class within a template
1275 function, we save the current tree structure so
1276 that we can get it back later. */
1282 /* Finish a class definition T, with the indicated COMPONENTS, and
1283 with the indicate ATTRIBUTES. If SEMI, the definition is
1284 immediately followed by a semicolon. Returns the type. */
1287 finish_class_definition (t, components, attributes, semi)
1294 /* Need to rework class nesting in the presence of nested classes,
1296 shadow_tag (CLASSTYPE_AS_LIST (t)); */
1299 /* finish_struct nukes this anyway; if finish_exception does too,
1302 note_got_semicolon (t);
1304 if (TREE_CODE (t) == ENUMERAL_TYPE)
1308 t = finish_struct (t, components, attributes, semi);
1310 note_got_semicolon (t);
1316 check_for_missing_semicolon (t);
1317 if (current_scope () == current_function_decl)
1318 do_pending_defargs ();
1323 /* Finish processing the default argument expressions cached during
1324 the processing of a class definition. */
1327 finish_default_args ()
1330 && current_scope () == current_function_decl)
1331 do_pending_inlines ();
1334 /* Finish processing the inline function definitions cached during the
1335 processing of a class definition. */
1338 begin_inline_definitions ()
1340 if (current_class_type == NULL_TREE)
1341 clear_inline_text_obstack ();
1343 /* Undo the begin_tree in begin_class_definition. */
1347 /* Finish processing the declaration of a member class template
1348 TYPES whose template parameters are given by PARMS. */
1351 finish_member_class_template (parms, types)
1355 note_list_got_semicolon (types);
1356 grok_x_components (types, NULL_TREE);
1357 if (TYPE_CONTEXT (TREE_VALUE (types)) != current_class_type)
1358 /* The component was in fact a friend declaration. We avoid
1359 finish_member_template_decl performing certain checks by
1362 finish_member_template_decl (parms, types);
1363 /* As with other component type declarations, we do
1364 not store the new DECL on the list of