From 40754343c55550abda1483354e4eb9e6ac1edf87 Mon Sep 17 00:00:00 2001 From: Richard Stallman Date: Wed, 29 Jan 1992 19:10:13 +0000 Subject: [PATCH] Initial revision From-SVN: r250 --- gcc/c-tree.h | 288 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 288 insertions(+) create mode 100644 gcc/c-tree.h diff --git a/gcc/c-tree.h b/gcc/c-tree.h new file mode 100644 index 0000000..1c680be --- /dev/null +++ b/gcc/c-tree.h @@ -0,0 +1,288 @@ +/* Definitions for C parsing and type checking. + Copyright (C) 1987 Free Software Foundation, Inc. + +This file is part of GNU CC. + +GNU CC 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. + +GNU CC 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 GNU CC; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* Language-dependent contents of an identifier. */ + +struct lang_identifier +{ + struct tree_identifier ignore; + tree global_value, local_value, label_value, implicit_decl; + tree error_locus; +}; + +/* Macros for access to language-specific slots in an identifier. */ + +#define IDENTIFIER_GLOBAL_VALUE(NODE) \ + (((struct lang_identifier *)(NODE))->global_value) +#define IDENTIFIER_LOCAL_VALUE(NODE) \ + (((struct lang_identifier *)(NODE))->local_value) +#define IDENTIFIER_LABEL_VALUE(NODE) \ + (((struct lang_identifier *)(NODE))->label_value) +#define IDENTIFIER_IMPLICIT_DECL(NODE) \ + (((struct lang_identifier *)(NODE))->implicit_decl) +#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. */ + +/* Nonzero means reject anything that ANSI standard C forbids. */ +extern int pedantic; + +/* 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 a RECORD_TYPE, a sorted array of the fields of the type. */ +struct lang_type +{ + int len; + tree elts[1]; +}; + +/* Mark which labels are explicitly declared. + These may be shadowed, and may be referenced from nested functions. */ +#define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label) + +/* 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) + +/* Record in each node resulting from a binary operator + what operator was specified for it. */ +#define C_EXP_ORIGINAL_CODE(exp) ((enum tree_code) TREE_COMPLEXITY (exp)) + +#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 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_NONCOPIED_PARTS (NODE) + +/* in c-typecheck.c */ +extern tree build_component_ref (), build_conditional_expr (), build_compound_expr (); +extern tree build_unary_op (), build_binary_op (), build_function_call (); +extern tree parser_build_binary_op (); +extern tree build_indirect_ref (), build_array_ref (), build_c_cast (); +extern tree build_modify_expr (); +extern tree c_sizeof (), c_alignof (), c_alignof_expr (); +extern void store_init_value (); +extern tree digest_init (); +extern tree c_expand_start_case (); +extern tree default_conversion (); + +/* Given two integer or real types, return the type for their sum. + Given two compatible ANSI C types, returns the merged type. */ + +extern tree common_type (); + +/* in c-decl.c */ +extern tree build_label (); + +extern int start_function (); +extern void finish_function (); +extern void store_parm_decls (); +extern tree get_parm_info (); +extern tree combine_parm_decls (); + +extern void pushlevel (); +extern tree poplevel (); + +extern tree groktypename (), lookup_name (); + +extern tree lookup_label (), define_label (), shadow_label (); + +extern tree implicitly_declare (), getdecls (), gettags (); + +extern tree start_decl (); +extern void finish_decl (); + +extern tree start_struct (), finish_struct (), xref_tag (); +extern tree grokfield (); + +extern tree start_enum (), finish_enum (); +extern tree build_enumerator (); + +extern tree make_index_type (); + +/* Add qualifiers to a type, in the fashion for C. */ +extern tree c_build_type_variant (); + +/* Functions in c-common.c: */ + +/* Concatenate a list of STRING_CST nodes into one STRING_CST. */ +extern tree combine_strings (); + +/* Validate the expression after `case' and apply default promotions. */ +extern tree check_case_value (); + +/* Print an error message for invalid operands to arith operation CODE. + NOP_EXPR is used as a special case (see truthvalue_conversion). */ + +extern void binary_op_error (); + +/* Subroutine of build_binary_op, used for comparison operations. + See if the operands have both been converted from subword integer types + and, if so, perhaps change them both back to their original type. */ + +extern tree shorten_compare (); + +/* Read the rest of the current #-directive line. */ +extern char *get_directive_line (); + +extern int maybe_objc_comptypes (); +extern tree maybe_building_objc_message_expr (); + +/* Standard named or nameless data types of the C compiler. */ + +extern tree short_integer_type_node, integer_type_node; +extern tree long_integer_type_node, long_long_integer_type_node; +extern tree short_unsigned_type_node, unsigned_type_node; +extern tree long_unsigned_type_node, long_long_unsigned_type_node; +extern tree ptrdiff_type_node; +extern tree unsigned_char_type_node, signed_char_type_node, char_type_node; +extern tree wchar_type_node, signed_wchar_type_node, unsigned_wchar_type_node; +extern tree float_type_node, double_type_node, long_double_type_node; +extern tree void_type_node, ptr_type_node, const_ptr_type_node; +extern tree string_type_node, const_string_type_node; +extern tree char_array_type_node, int_array_type_node, wchar_array_type_node; +extern tree default_function_type; +extern tree double_ftype_double, double_ftype_double_double; +extern tree int_ftype_int, long_ftype_long; +extern tree void_ftype_ptr_ptr_int, int_ftype_ptr_ptr_int; +extern tree void_ftype_ptr_int_int, string_ftype_ptr_ptr; +extern tree int_ftype_string_string, int_ftype_cptr_cptr_sizet; + +/* 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; + +/* Nonzero means `$' can be in an identifier. */ + +extern int dollars_in_ident; + +/* Nonzero means allow type mismatches in conditional expressions; + just make their values `void'. */ + +extern int flag_cond_mismatch; + +/* Nonzero means don't recognize the keyword `asm'. */ + +extern int flag_no_asm; + +/* Nonzero means ignore `#ident' directives. */ + +extern int flag_no_ident; + +/* Nonzero means warn about implicit declarations. */ + +extern int warn_implicit; + +/* Nonzero means give string constants the type `const char *' + to get extra warnings from them. These warnings will be too numerous + to be useful, except in thoroughly ANSIfied programs. */ + +extern int warn_write_strings; + +/* Nonzero means warn about sizeof (function) or addition/subtraction + of function pointers. */ + +extern int warn_pointer_arith; + +/* Nonzero means warn for all old-style non-prototype function decls. */ + +extern int warn_strict_prototypes; + +/* Nonzero means warn about multiple (redundant) decls for the same single + variable or function. */ + +extern int warn_redundant_decls; + +/* Nonzero means warn about extern declarations of objects not at + file-scope level and about *all* declarations of functions (whether + extern or static) not at file-scope level. Note that we exclude + implicit function declarations. To get warnings about those, use + -Wimplicit. */ + +extern int warn_nested_externs; + +/* Nonzero means warn about pointer casts that can drop a type qualifier + from the pointer target type. */ + +extern int warn_cast_qual; + +/* Warn about traditional constructs whose meanings changed in ANSI C. */ + +extern int warn_traditional; + +/* Warn about *printf or *scanf format/argument anomalies. */ + +extern int warn_format; + +/* Warn about a subscript that has type char. */ + +extern int warn_char_subscripts; + +/* Warn if a type conversion is done that might have confusing results. */ + +extern int warn_conversion; + +/* Nonzero means do some things the same way PCC does. */ + +extern int flag_traditional; + +/* Nonzero means warn about suggesting putting in ()'s. */ + +extern int warn_parentheses; + +/* Nonzero means this is a function to call to perform comptypes + on two record types. */ + +extern int (*comptypes_record_hook) (); + +/* Nonzero means we are reading code that came from a system header file. */ + +extern int system_header_p; -- 2.7.4