| /* Definitions for C parsing and type checking. |
| Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998, |
| 1999, 2000, 2001, 2002, 2003 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 symbol_value; |
| tree tag_value; |
| tree label_value; |
| }; |
| |
| /* The resulting tree type. */ |
| |
| union lang_tree_node |
| GTY((desc ("TREE_CODE (&%h.generic) == IDENTIFIER_NODE"), |
| chain_next ("TREE_CODE (&%h.generic) == INTEGER_TYPE ? (union lang_tree_node *)TYPE_NEXT_VARIANT (&%h.generic) : (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(()) |
| { |
| /* 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. */ |
| |
| /* The value of the identifier in the namespace of "ordinary identifiers" |
| (data objects, enum constants, functions, typedefs). */ |
| #define IDENTIFIER_SYMBOL_VALUE(NODE) \ |
| (((struct lang_identifier *) (NODE))->symbol_value) |
| /* The value of the identifier in the namespace of struct, union, |
| and enum tags. */ |
| #define IDENTIFIER_TAG_VALUE(NODE) \ |
| (((struct lang_identifier *) (NODE))->tag_value) |
| /* The value of the identifier in the namespace of labels. */ |
| #define IDENTIFIER_LABEL_VALUE(NODE) \ |
| (((struct lang_identifier *) (NODE))->label_value) |
| |
| /* 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 incomplete RECORD_TYPE or UNION_TYPE, a list of variable |
| declarations whose type would be completed by completing that type. */ |
| #define C_TYPE_INCOMPLETE_VARS(TYPE) TYPE_VFIELD (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) |
| |
| /* In a RECORD_TYPE, a sorted array of the fields of the type. */ |
| struct lang_type GTY(()) |
| { |
| struct sorted_fields_type * GTY ((reorder ("resort_sorted_fields"))) s; |
| }; |
| |
| /* 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) |
| |
| /* 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) |
| |
| /* For a FUNCTION_DECL, nonzero if it was an implicit declaration. */ |
| #define C_DECL_IMPLICIT(EXP) DECL_LANG_FLAG_2 (EXP) |
| |
| /* Nonzero for a declaration of an external object which is not |
| currently in scope. This is either a built-in declaration of |
| a library function, before a real declaration has been seen, |
| or a declaration that appeared in an inner scope that has ended. */ |
| #define C_DECL_INVISIBLE(EXP) DECL_LANG_FLAG_3 (EXP) |
| |
| /* Nonzero for a decl which either doesn't exist or isn't a prototype. |
| N.B. Could be simplified if all built-in decls had complete prototypes |
| (but this is presently difficult because some of them need FILE*). */ |
| #define C_DECL_ISNT_PROTOTYPE(EXP) \ |
| (EXP == 0 \ |
| || (TYPE_ARG_TYPES (TREE_TYPE (EXP)) == 0 \ |
| && !DECL_BUILT_IN (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) |
| |
| /* Values for the first parameter to poplevel. */ |
| #define KEEP_NO 0 |
| #define KEEP_YES 1 |
| #define KEEP_MAYBE 2 |
| |
| /* Save and restore the variables in this file and elsewhere |
| that keep track of the progress of compilation of the current function. |
| Used for nested functions. */ |
| |
| struct language_function GTY(()) |
| { |
| struct c_language_function base; |
| int returns_value; |
| int returns_null; |
| int returns_abnormally; |
| int warn_about_return_type; |
| int extern_inline; |
| int x_in_iteration_stmt; |
| int x_in_case_stmt; |
| }; |
| |
| |
| /* in c-parse.in */ |
| extern void c_parse_init (void); |
| |
| /* in c-aux-info.c */ |
| extern void gen_aux_info_record (tree, int, int, int); |
| |
| /* in c-decl.c */ |
| extern int c_in_iteration_stmt; |
| extern int c_in_case_stmt; |
| |
| extern int global_bindings_p (void); |
| extern tree getdecls (void); |
| extern void pushlevel (int); |
| extern void insert_block (tree); |
| extern void set_block (tree); |
| extern tree pushdecl (tree); |
| extern void c_expand_body (tree); |
| |
| extern void c_init_decl_processing (void); |
| extern void c_dup_lang_specific_decl (tree); |
| extern void c_print_identifier (FILE *, tree, int); |
| extern tree build_array_declarator (tree, tree, int, int); |
| extern tree build_enumerator (tree, tree); |
| extern void check_for_loop_decls (void); |
| extern void mark_forward_parm_decls (void); |
| extern int complete_array_type (tree, tree, int); |
| extern void declare_parm_level (void); |
| extern void undeclared_variable (tree); |
| extern tree declare_label (tree); |
| extern tree define_label (location_t, tree); |
| extern void finish_decl (tree, tree, tree); |
| extern tree finish_enum (tree, tree, tree); |
| extern void finish_function (void); |
| extern tree finish_struct (tree, tree, tree); |
| extern tree get_parm_info (int); |
| extern tree grokfield (tree, tree, tree); |
| extern tree groktypename (tree); |
| extern tree groktypename_in_parm_context (tree); |
| extern tree implicitly_declare (tree); |
| extern int in_parm_level_p (void); |
| extern void keep_next_level (void); |
| extern tree lookup_name (tree); |
| extern void pending_xref_error (void); |
| extern void c_push_function_context (struct function *); |
| extern void c_pop_function_context (struct function *); |
| extern void push_parm_decl (tree); |
| extern tree pushdecl_top_level (tree); |
| extern void pushtag (tree, tree); |
| extern tree set_array_declarator_type (tree, tree, int); |
| extern void shadow_tag (tree); |
| extern void shadow_tag_warned (tree, int); |
| extern tree start_enum (tree); |
| extern int start_function (tree, tree, tree); |
| extern tree start_decl (tree, tree, int, tree); |
| extern tree start_struct (enum tree_code, tree); |
| extern void store_parm_decls (void); |
| extern tree xref_tag (enum tree_code, tree); |
| extern tree c_begin_compound_stmt (void); |
| extern void c_expand_deferred_function (tree); |
| extern void c_expand_decl_stmt (tree); |
| extern void c_static_assembler_name (tree); |
| extern tree make_pointer_declarator (tree, tree); |
| extern void merge_translation_unit_decls (void); |
| |
| /* in c-objc-common.c */ |
| extern int c_disregard_inline_limits (tree); |
| extern int c_cannot_inline_tree_fn (tree *); |
| extern bool c_objc_common_init (void); |
| extern int c_missing_noreturn_ok_p (tree); |
| extern void c_objc_common_finish_file (void); |
| extern int defer_fn (tree); |
| extern bool c_warn_unused_global_decl (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 */ |
| |
| /* For use with comptypes. */ |
| enum { |
| COMPARE_STRICT = 0 |
| }; |
| |
| extern tree require_complete_type (tree); |
| extern int comptypes (tree, tree, int); |
| extern tree c_size_in_bytes (tree); |
| extern bool c_mark_addressable (tree); |
| extern void c_incomplete_type_error (tree, tree); |
| extern tree c_type_promotes_to (tree); |
| extern tree build_component_ref (tree, tree); |
| extern tree build_indirect_ref (tree, const char *); |
| extern tree build_array_ref (tree, tree); |
| extern tree build_external_ref (tree, int); |
| extern tree parser_build_binary_op (enum tree_code, tree, tree); |
| extern int c_tree_expr_nonnegative_p (tree); |
| extern void readonly_error (tree, const char *); |
| extern tree build_conditional_expr (tree, tree, tree); |
| extern tree build_compound_expr (tree); |
| extern tree c_cast_expr (tree, tree); |
| extern tree build_c_cast (tree, tree); |
| extern tree build_modify_expr (tree, enum tree_code, tree); |
| extern void store_init_value (tree, tree); |
| extern void error_init (const char *); |
| extern void pedwarn_init (const char *); |
| extern void start_init (tree, tree, int); |
| extern void finish_init (void); |
| extern void really_start_incremental_init (tree); |
| extern void push_init_level (int); |
| extern tree pop_init_level (int); |
| extern void set_init_index (tree, tree); |
| extern void set_init_label (tree); |
| extern void process_init_element (tree); |
| extern tree build_compound_literal (tree, tree); |
| extern void pedwarn_c90 (const char *, ...) ATTRIBUTE_PRINTF_1; |
| extern void pedwarn_c99 (const char *, ...) ATTRIBUTE_PRINTF_1; |
| extern tree c_start_case (tree); |
| extern void c_finish_case (void); |
| extern tree simple_asm_stmt (tree); |
| extern tree build_asm_stmt (tree, tree, tree, tree, tree); |
| extern tree c_convert_parm_for_inlining (tree, tree, tree, int); |
| |
| /* 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 (tree); |
| extern void *get_current_scope (void); |
| extern void objc_mark_locals_volatile (void *); |
| extern void c_write_global_declarations (void); |
| |
| extern GTY(()) tree static_ctors; |
| extern GTY(()) tree static_dtors; |
| |
| /* In order for the format checking to accept the C frontend |
| diagnostic framework extensions, you must include this file before |
| toplev.h, not after. */ |
| #define GCC_DIAG_STYLE __gcc_cdiag__ |
| |
| #endif /* ! GCC_C_TREE_H */ |