| /* Definitions for C parsing and type checking. |
| Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998, |
| 1999, 2000, 2001, 2002 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC 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, or (at your option) any later |
| version. |
| |
| GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
| WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING. If not, write to the Free |
| Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
| 02111-1307, USA. */ |
| |
| #ifndef GCC_C_TREE_H |
| #define GCC_C_TREE_H |
| |
| #include "c-common.h" |
| |
| /* Language-dependent contents of an identifier. */ |
| |
| /* The limbo_value is used for block level extern declarations, which need |
| to be type checked against subsequent extern declarations. They can't |
| be referenced after they fall out of scope, so they can't be global. |
| |
| The rid_code field is used for keywords. It is in all |
| lang_identifier nodes, because some keywords are only special in a |
| particular context. */ |
| |
| struct lang_identifier GTY(()) |
| { |
| struct c_common_identifier common_id; |
| tree global_value; |
| tree local_value; |
| tree label_value; |
| tree implicit_decl; |
| tree error_locus; |
| tree limbo_value; |
| }; |
| |
| /* The resulting tree type. */ |
| |
| union lang_tree_node |
| GTY((desc ("TREE_CODE (&%h.generic) == IDENTIFIER_NODE"), |
| chain_next ("(union lang_tree_node *)TREE_CHAIN (&%h.generic)"))) |
| { |
| union tree_node GTY ((tag ("0"), |
| desc ("tree_node_structure (&%h)"))) |
| generic; |
| struct lang_identifier GTY ((tag ("1"))) identifier; |
| }; |
| |
| /* Language-specific declaration information. */ |
| |
| struct lang_decl GTY(()) |
| { |
| struct c_lang_decl base; |
| /* The return types and parameter types may have variable size. |
| This is a list of any SAVE_EXPRs that need to be evaluated to |
| compute those sizes. */ |
| tree pending_sizes; |
| }; |
| |
| /* Macros for access to language-specific slots in an identifier. */ |
| /* Each of these slots contains a DECL node or null. */ |
| |
| /* This represents the value which the identifier has in the |
| file-scope namespace. */ |
| #define IDENTIFIER_GLOBAL_VALUE(NODE) \ |
| (((struct lang_identifier *) (NODE))->global_value) |
| /* This represents the value which the identifier has in the current |
| scope. */ |
| #define IDENTIFIER_LOCAL_VALUE(NODE) \ |
| (((struct lang_identifier *) (NODE))->local_value) |
| /* This represents the value which the identifier has as a label in |
| the current label scope. */ |
| #define IDENTIFIER_LABEL_VALUE(NODE) \ |
| (((struct lang_identifier *) (NODE))->label_value) |
| /* This records the extern decl of this identifier, if it has had one |
| at any point in this compilation. */ |
| #define IDENTIFIER_LIMBO_VALUE(NODE) \ |
| (((struct lang_identifier *) (NODE))->limbo_value) |
| /* This records the implicit function decl of this identifier, if it |
| has had one at any point in this compilation. */ |
| #define IDENTIFIER_IMPLICIT_DECL(NODE) \ |
| (((struct lang_identifier *) (NODE))->implicit_decl) |
| /* This is the last function in which we printed an "undefined variable" |
| message for this identifier. Value is a FUNCTION_DECL or null. */ |
| #define IDENTIFIER_ERROR_LOCUS(NODE) \ |
| (((struct lang_identifier *) (NODE))->error_locus) |
| |
| /* In identifiers, C uses the following fields in a special way: |
| TREE_PUBLIC to record that there was a previous local extern decl. |
| TREE_USED to record that such a decl was used. |
| TREE_ADDRESSABLE to record that the address of such a decl was used. */ |
| |
| /* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only. */ |
| #define C_TYPE_FIELDS_READONLY(TYPE) TREE_LANG_FLAG_1 (TYPE) |
| |
| /* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is volatile. */ |
| #define C_TYPE_FIELDS_VOLATILE(TYPE) TREE_LANG_FLAG_2 (TYPE) |
| |
| /* In a RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE |
| nonzero if the definition of the type has already started. */ |
| #define C_TYPE_BEING_DEFINED(TYPE) TYPE_LANG_FLAG_0 (TYPE) |
| |
| /* In an IDENTIFIER_NODE, nonzero if this identifier is actually a |
| keyword. C_RID_CODE (node) is then the RID_* value of the keyword, |
| and C_RID_YYCODE is the token number wanted by Yacc. */ |
| #define C_IS_RESERVED_WORD(ID) TREE_LANG_FLAG_0 (ID) |
| |
| /* This function was declared inline. This flag controls the linkage |
| semantics of 'inline'; whether or not the function is inlined is |
| controlled by DECL_INLINE. */ |
| #define DECL_DECLARED_INLINE_P(NODE) \ |
| (DECL_LANG_SPECIFIC (NODE)->base.declared_inline) |
| |
| /* In a RECORD_TYPE, a sorted array of the fields of the type. */ |
| struct lang_type GTY(()) |
| { |
| int len; |
| tree GTY((length ("%h.len"))) elts[1]; |
| }; |
| |
| /* Record whether a type or decl was written with nonconstant size. |
| Note that TYPE_SIZE may have simplified to a constant. */ |
| #define C_TYPE_VARIABLE_SIZE(TYPE) TYPE_LANG_FLAG_1 (TYPE) |
| #define C_DECL_VARIABLE_SIZE(TYPE) DECL_LANG_FLAG_0 (TYPE) |
| |
| #if 0 /* Not used. */ |
| /* Record whether a decl for a function or function pointer has |
| already been mentioned (in a warning) because it was called |
| but didn't have a prototype. */ |
| #define C_MISSING_PROTOTYPE_WARNED(DECL) DECL_LANG_FLAG_2 (DECL) |
| #endif |
| |
| /* Store a value in that field. */ |
| #define C_SET_EXP_ORIGINAL_CODE(EXP, CODE) \ |
| (TREE_COMPLEXITY (EXP) = (int) (CODE)) |
| |
| /* Record whether a typedef for type `int' was actually `signed int'. */ |
| #define C_TYPEDEF_EXPLICITLY_SIGNED(EXP) DECL_LANG_FLAG_1 (EXP) |
| |
| /* For a FUNCTION_DECL, nonzero if it was defined without an explicit |
| return type. */ |
| #define C_FUNCTION_IMPLICIT_INT(EXP) DECL_LANG_FLAG_1 (EXP) |
| |
| /* Nonzero for a declaration of a built in function if there has been no |
| occasion that would declare the function in ordinary C. |
| Using the function draws a pedantic warning in this case. */ |
| #define C_DECL_ANTICIPATED(EXP) DECL_LANG_FLAG_3 (EXP) |
| |
| /* For FUNCTION_TYPE, a hidden list of types of arguments. The same as |
| TYPE_ARG_TYPES for functions with prototypes, but created for functions |
| without prototypes. */ |
| #define TYPE_ACTUAL_ARG_TYPES(NODE) TYPE_BINFO (NODE) |
| |
| |
| /* in c-lang.c and objc-act.c */ |
| extern tree lookup_interface PARAMS ((tree)); |
| extern tree is_class_name PARAMS ((tree)); |
| extern tree objc_is_id PARAMS ((tree)); |
| extern void objc_check_decl PARAMS ((tree)); |
| extern void finish_file PARAMS ((void)); |
| extern int objc_comptypes PARAMS ((tree, tree, int)); |
| extern tree objc_message_selector PARAMS ((void)); |
| extern tree lookup_objc_ivar PARAMS ((tree)); |
| |
| |
| /* in c-parse.in */ |
| extern void c_parse_init PARAMS ((void)); |
| |
| /* in c-aux-info.c */ |
| extern void gen_aux_info_record PARAMS ((tree, int, int, int)); |
| |
| /* in c-decl.c */ |
| extern int global_bindings_p PARAMS ((void)); |
| extern int kept_level_p PARAMS ((void)); |
| extern tree getdecls PARAMS ((void)); |
| extern void pushlevel PARAMS ((int)); |
| extern tree poplevel PARAMS ((int,int, int)); |
| extern void insert_block PARAMS ((tree)); |
| extern void set_block PARAMS ((tree)); |
| extern tree pushdecl PARAMS ((tree)); |
| |
| extern void c_insert_default_attributes PARAMS ((tree)); |
| extern void c_init_decl_processing PARAMS ((void)); |
| extern void c_dup_lang_specific_decl PARAMS ((tree)); |
| extern void c_print_identifier PARAMS ((FILE *, tree, int)); |
| extern tree build_array_declarator PARAMS ((tree, tree, int, int)); |
| extern tree build_enumerator PARAMS ((tree, tree)); |
| extern void check_for_loop_decls PARAMS ((void)); |
| extern void clear_parm_order PARAMS ((void)); |
| extern int complete_array_type PARAMS ((tree, tree, int)); |
| extern void declare_parm_level PARAMS ((int)); |
| extern tree define_label PARAMS ((const char *, int, |
| tree)); |
| extern void finish_decl PARAMS ((tree, tree, tree)); |
| extern tree finish_enum PARAMS ((tree, tree, tree)); |
| extern void finish_function PARAMS ((int, int)); |
| extern tree finish_struct PARAMS ((tree, tree, tree)); |
| extern tree get_parm_info PARAMS ((int)); |
| extern tree grokfield PARAMS ((const char *, int, tree, tree, tree)); |
| extern tree groktypename PARAMS ((tree)); |
| extern tree groktypename_in_parm_context PARAMS ((tree)); |
| extern tree implicitly_declare PARAMS ((tree)); |
| extern void implicit_decl_warning PARAMS ((tree)); |
| extern int in_parm_level_p PARAMS ((void)); |
| extern void keep_next_level PARAMS ((void)); |
| extern tree lookup_name PARAMS ((tree)); |
| extern tree lookup_name_current_level PARAMS ((tree)); |
| extern void parmlist_tags_warning PARAMS ((void)); |
| extern void pending_xref_error PARAMS ((void)); |
| extern void c_push_function_context PARAMS ((struct function *)); |
| extern void c_pop_function_context PARAMS ((struct function *)); |
| extern void pop_label_level PARAMS ((void)); |
| extern void push_label_level PARAMS ((void)); |
| extern void push_parm_decl PARAMS ((tree)); |
| extern tree pushdecl_top_level PARAMS ((tree)); |
| extern void pushtag PARAMS ((tree, tree)); |
| extern tree set_array_declarator_type PARAMS ((tree, tree, int)); |
| extern tree shadow_label PARAMS ((tree)); |
| extern void shadow_tag PARAMS ((tree)); |
| extern void shadow_tag_warned PARAMS ((tree, int)); |
| extern tree start_enum PARAMS ((tree)); |
| extern int start_function PARAMS ((tree, tree, tree)); |
| extern tree start_decl PARAMS ((tree, tree, int, |
| tree)); |
| extern tree start_struct PARAMS ((enum tree_code, tree)); |
| extern void store_parm_decls PARAMS ((void)); |
| extern tree xref_tag PARAMS ((enum tree_code, tree)); |
| extern tree c_begin_compound_stmt PARAMS ((void)); |
| extern void c_expand_deferred_function PARAMS ((tree)); |
| extern void c_expand_decl_stmt PARAMS ((tree)); |
| extern tree make_pointer_declarator PARAMS ((tree, tree)); |
| |
| /* in c-objc-common.c */ |
| extern int c_disregard_inline_limits PARAMS ((tree)); |
| extern int c_cannot_inline_tree_fn PARAMS ((tree *)); |
| extern const char *c_objc_common_init PARAMS ((const char *)); |
| extern int c_missing_noreturn_ok_p PARAMS ((tree)); |
| extern void c_objc_common_finish_file PARAMS ((void)); |
| extern int defer_fn PARAMS ((tree)); |
| extern bool c_warn_unused_global_decl PARAMS ((tree)); |
| |
| #define c_build_type_variant(TYPE, CONST_P, VOLATILE_P) \ |
| c_build_qualified_type ((TYPE), \ |
| ((CONST_P) ? TYPE_QUAL_CONST : 0) | \ |
| ((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0)) |
| |
| #define c_sizeof_nowarn(T) c_sizeof_or_alignof_type (T, SIZEOF_EXPR, 0) |
| /* in c-typeck.c */ |
| extern tree require_complete_type PARAMS ((tree)); |
| extern int comptypes PARAMS ((tree, tree)); |
| extern tree c_size_in_bytes PARAMS ((tree)); |
| extern bool c_mark_addressable PARAMS ((tree)); |
| extern void c_incomplete_type_error PARAMS ((tree, tree)); |
| extern tree c_type_promotes_to PARAMS ((tree)); |
| extern tree build_component_ref PARAMS ((tree, tree)); |
| extern tree build_indirect_ref PARAMS ((tree, const char *)); |
| extern tree build_array_ref PARAMS ((tree, tree)); |
| extern tree build_external_ref PARAMS ((tree, int)); |
| extern tree parser_build_binary_op PARAMS ((enum tree_code, |
| tree, tree)); |
| extern int c_tree_expr_nonnegative_p PARAMS ((tree)); |
| extern void readonly_error PARAMS ((tree, const char *)); |
| extern tree build_conditional_expr PARAMS ((tree, tree, tree)); |
| extern tree build_compound_expr PARAMS ((tree)); |
| extern tree c_cast_expr PARAMS ((tree, tree)); |
| extern tree build_c_cast PARAMS ((tree, tree)); |
| extern tree build_modify_expr PARAMS ((tree, enum tree_code, |
| tree)); |
| extern void store_init_value PARAMS ((tree, tree)); |
| extern void error_init PARAMS ((const char *)); |
| extern void pedwarn_init PARAMS ((const char *)); |
| extern void start_init PARAMS ((tree, tree, int)); |
| extern void finish_init PARAMS ((void)); |
| extern void really_start_incremental_init PARAMS ((tree)); |
| extern void push_init_level PARAMS ((int)); |
| extern tree pop_init_level PARAMS ((int)); |
| extern void set_init_index PARAMS ((tree, tree)); |
| extern void set_init_label PARAMS ((tree)); |
| extern void process_init_element PARAMS ((tree)); |
| extern tree build_compound_literal PARAMS ((tree, tree)); |
| extern void pedwarn_c99 PARAMS ((const char *, ...)) |
| ATTRIBUTE_PRINTF_1; |
| extern tree c_start_case PARAMS ((tree)); |
| extern void c_finish_case PARAMS ((void)); |
| extern tree simple_asm_stmt PARAMS ((tree)); |
| extern tree build_asm_stmt PARAMS ((tree, tree, tree, |
| tree, tree)); |
| extern tree c_convert_parm_for_inlining PARAMS ((tree, tree, tree)); |
| |
| /* Set to 0 at beginning of a function definition, set to 1 if |
| a return statement that specifies a return value is seen. */ |
| |
| extern int current_function_returns_value; |
| |
| /* Set to 0 at beginning of a function definition, set to 1 if |
| a return statement with no argument is seen. */ |
| |
| extern int current_function_returns_null; |
| |
| /* Set to 0 at beginning of a function definition, set to 1 if |
| a call to a noreturn function is seen. */ |
| |
| extern int current_function_returns_abnormally; |
| |
| /* Nonzero means we are reading code that came from a system header file. */ |
| |
| extern int system_header_p; |
| |
| /* In c-decl.c */ |
| extern void c_finish_incomplete_decl PARAMS ((tree)); |
| |
| extern GTY(()) tree static_ctors; |
| extern GTY(()) tree static_dtors; |
| |
| #endif /* ! GCC_C_TREE_H */ |
