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3900 lines
108 KiB
C
3900 lines
108 KiB
C
/* YACC parser for C syntax and for Objective C. -*-c-*-
|
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Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996,
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1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
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||
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||
This file is part of GCC.
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||
|
||
GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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||
Software Foundation; either version 2, or (at your option) any later
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||
version.
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||
|
||
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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||
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
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for more details.
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||
|
||
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
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02111-1307, USA. */
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||
/* This file defines the grammar of C and that of Objective C.
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ifobjc ... end ifobjc conditionals contain code for Objective C only.
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ifc ... end ifc conditionals contain code for C only.
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Sed commands in Makefile.in are used to convert this file into
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c-parse.y and into objc-parse.y. */
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/* To whomever it may concern: I have heard that such a thing was once
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written by AT&T, but I have never seen it. */
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ifobjc
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%expect 31 /* shift/reduce conflicts, and 1 reduce/reduce conflict. */
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end ifobjc
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ifc
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%expect 10 /* shift/reduce conflicts, and no reduce/reduce conflicts. */
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end ifc
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%{
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#include "config.h"
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#include "system.h"
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#include "tree.h"
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#include "input.h"
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#include "cpplib.h"
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#include "intl.h"
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#include "timevar.h"
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||
#include "c-lex.h"
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#include "c-tree.h"
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#include "c-pragma.h"
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#include "flags.h"
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#include "output.h"
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#include "toplev.h"
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#include "ggc.h"
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#ifdef MULTIBYTE_CHARS
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#include <locale.h>
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#endif
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||
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ifobjc
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#include "objc-act.h"
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end ifobjc
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||
/* Like YYERROR but do call yyerror. */
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#define YYERROR1 { yyerror ("syntax error"); YYERROR; }
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/* Cause the "yydebug" variable to be defined. */
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#define YYDEBUG 1
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/* Rename the "yyparse" function so that we can override it elsewhere. */
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#define yyparse yyparse_1
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%}
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%start program
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%union {long itype; tree ttype; enum tree_code code;
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const char *filename; int lineno; }
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/* All identifiers that are not reserved words
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||
and are not declared typedefs in the current block */
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%token IDENTIFIER
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/* All identifiers that are declared typedefs in the current block.
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In some contexts, they are treated just like IDENTIFIER,
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but they can also serve as typespecs in declarations. */
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%token TYPENAME
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/* Reserved words that specify storage class.
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||
yylval contains an IDENTIFIER_NODE which indicates which one. */
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%token SCSPEC
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/* Reserved words that specify type.
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||
yylval contains an IDENTIFIER_NODE which indicates which one. */
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%token TYPESPEC
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||
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/* Reserved words that qualify type: "const", "volatile", or "restrict".
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yylval contains an IDENTIFIER_NODE which indicates which one. */
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%token TYPE_QUAL
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||
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/* Character or numeric constants.
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yylval is the node for the constant. */
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%token CONSTANT
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/* String constants in raw form.
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yylval is a STRING_CST node. */
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%token STRING
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||
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/* "...", used for functions with variable arglists. */
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||
%token ELLIPSIS
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/* the reserved words */
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||
/* SCO include files test "ASM", so use something else. */
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%token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
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%token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
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%token ATTRIBUTE EXTENSION LABEL
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||
%token REALPART IMAGPART VA_ARG CHOOSE_EXPR TYPES_COMPATIBLE_P
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||
%token PTR_VALUE PTR_BASE PTR_EXTENT
|
||
|
||
/* function name can be a string const or a var decl. */
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||
%token STRING_FUNC_NAME VAR_FUNC_NAME
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||
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/* Add precedence rules to solve dangling else s/r conflict */
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||
%nonassoc IF
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%nonassoc ELSE
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||
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||
/* Define the operator tokens and their precedences.
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||
The value is an integer because, if used, it is the tree code
|
||
to use in the expression made from the operator. */
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%right <code> ASSIGN '='
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%right <code> '?' ':'
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%left <code> OROR
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%left <code> ANDAND
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||
%left <code> '|'
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||
%left <code> '^'
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||
%left <code> '&'
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||
%left <code> EQCOMPARE
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||
%left <code> ARITHCOMPARE
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||
%left <code> LSHIFT RSHIFT
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||
%left <code> '+' '-'
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||
%left <code> '*' '/' '%'
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||
%right <code> UNARY PLUSPLUS MINUSMINUS
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||
%left HYPERUNARY
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||
%left <code> POINTSAT '.' '(' '['
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||
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||
/* The Objective-C keywords. These are included in C and in
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||
Objective C, so that the token codes are the same in both. */
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||
%token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE
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%token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS
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||
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||
%type <code> unop
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||
%type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
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%type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
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||
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||
%type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
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||
%type <ttype> expr_no_commas cast_expr unary_expr primary string STRING
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%type <ttype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
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%type <ttype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
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%type <ttype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
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%type <ttype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
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%type <ttype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
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%type <ttype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
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%type <ttype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
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%type <ttype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
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%type <ttype> declspecs_ts declspecs_nots
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%type <ttype> declspecs_ts_nosa declspecs_nots_nosa
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%type <ttype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
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%type <ttype> maybe_type_quals_attrs typespec_nonattr typespec_attr
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%type <ttype> typespec_reserved_nonattr typespec_reserved_attr
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%type <ttype> typespec_nonreserved_nonattr
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||
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%type <ttype> SCSPEC TYPESPEC TYPE_QUAL maybe_type_qual
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%type <ttype> initdecls notype_initdecls initdcl notype_initdcl
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%type <ttype> init maybeasm
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%type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
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%type <ttype> maybe_attribute attributes attribute attribute_list attrib
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%type <ttype> any_word extension
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||
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%type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
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||
%type <ttype> do_stmt_start poplevel stmt label
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||
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||
%type <ttype> c99_block_start c99_block_end
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%type <ttype> declarator
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%type <ttype> notype_declarator after_type_declarator
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||
%type <ttype> parm_declarator
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||
%type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
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%type <ttype> array_declarator
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||
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||
%type <ttype> structsp_attr structsp_nonattr
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||
%type <ttype> component_decl_list component_decl_list2
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||
%type <ttype> component_decl components components_notype component_declarator
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||
%type <ttype> component_notype_declarator
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||
%type <ttype> enumlist enumerator
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||
%type <ttype> struct_head union_head enum_head
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||
%type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
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||
%type <ttype> direct_absdcl1 absdcl_maybe_attribute
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||
%type <ttype> xexpr parms parm firstparm identifiers
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||
%type <ttype> parmlist parmlist_1 parmlist_2
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%type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
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%type <ttype> identifiers_or_typenames
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%type <itype> setspecs setspecs_fp
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%type <filename> save_filename
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%type <lineno> save_lineno
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ifobjc
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/* the Objective-C nonterminals */
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%type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
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%type <ttype> methoddecl unaryselector keywordselector selector
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%type <ttype> keyworddecl receiver objcmessageexpr messageargs
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%type <ttype> keywordexpr keywordarglist keywordarg
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%type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
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%type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
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%type <ttype> objc_string non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
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||
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%type <ttype> CLASSNAME OBJECTNAME
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end ifobjc
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%{
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||
/* Number of statements (loosely speaking) and compound statements
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seen so far. */
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static int stmt_count;
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||
static int compstmt_count;
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||
/* Input file and line number of the end of the body of last simple_if;
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used by the stmt-rule immediately after simple_if returns. */
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static const char *if_stmt_file;
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static int if_stmt_line;
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/* List of types and structure classes of the current declaration. */
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static tree current_declspecs = NULL_TREE;
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static tree prefix_attributes = NULL_TREE;
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/* List of all the attributes applying to the identifier currently being
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declared; includes prefix_attributes and possibly some more attributes
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just after a comma. */
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static tree all_prefix_attributes = NULL_TREE;
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/* Stack of saved values of current_declspecs, prefix_attributes and
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all_prefix_attributes. */
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static tree declspec_stack;
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/* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
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should be called from the productions making use of setspecs. */
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#define PUSH_DECLSPEC_STACK \
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do { \
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declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
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all_prefix_attributes), \
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current_declspecs, \
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declspec_stack); \
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} while (0)
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#define POP_DECLSPEC_STACK \
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do { \
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current_declspecs = TREE_VALUE (declspec_stack); \
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prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
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all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
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declspec_stack = TREE_CHAIN (declspec_stack); \
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} while (0)
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/* For __extension__, save/restore the warning flags which are
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||
controlled by __extension__. */
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#define SAVE_WARN_FLAGS() \
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size_int (pedantic \
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| (warn_pointer_arith << 1) \
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| (warn_traditional << 2))
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#define RESTORE_WARN_FLAGS(tval) \
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do { \
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int val = tree_low_cst (tval, 0); \
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pedantic = val & 1; \
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warn_pointer_arith = (val >> 1) & 1; \
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warn_traditional = (val >> 2) & 1; \
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} while (0)
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ifobjc
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/* Objective-C specific parser/lexer information */
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static enum tree_code objc_inherit_code;
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static int objc_pq_context = 0, objc_public_flag = 0;
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||
|
||
/* The following flag is needed to contextualize ObjC lexical analysis.
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||
In some cases (e.g., 'int NSObject;'), it is undesirable to bind
|
||
an identifier to an ObjC class, even if a class with that name
|
||
exists. */
|
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static int objc_need_raw_identifier;
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#define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
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end ifobjc
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ifc
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#define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
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end ifc
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||
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||
/* Tell yyparse how to print a token's value, if yydebug is set. */
|
||
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||
#define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
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||
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||
static void yyprint PARAMS ((FILE *, int, YYSTYPE));
|
||
static void yyerror PARAMS ((const char *));
|
||
static int yylexname PARAMS ((void));
|
||
static inline int _yylex PARAMS ((void));
|
||
static int yylex PARAMS ((void));
|
||
static void init_reswords PARAMS ((void));
|
||
|
||
/* Add GC roots for variables local to this file. */
|
||
void
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c_parse_init ()
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{
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init_reswords ();
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||
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||
ggc_add_tree_root (&declspec_stack, 1);
|
||
ggc_add_tree_root (¤t_declspecs, 1);
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||
ggc_add_tree_root (&prefix_attributes, 1);
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||
ggc_add_tree_root (&all_prefix_attributes, 1);
|
||
}
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||
%}
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%%
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program: /* empty */
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{ if (pedantic)
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pedwarn ("ISO C forbids an empty source file");
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finish_file ();
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||
}
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||
| extdefs
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||
{
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||
/* In case there were missing closebraces,
|
||
get us back to the global binding level. */
|
||
while (! global_bindings_p ())
|
||
poplevel (0, 0, 0);
|
||
ifc
|
||
finish_fname_decls ();
|
||
end ifc
|
||
finish_file ();
|
||
}
|
||
;
|
||
|
||
/* the reason for the strange actions in this rule
|
||
is so that notype_initdecls when reached via datadef
|
||
can find a valid list of type and sc specs in $0. */
|
||
|
||
extdefs:
|
||
{$<ttype>$ = NULL_TREE; } extdef
|
||
| extdefs {$<ttype>$ = NULL_TREE; ggc_collect(); } extdef
|
||
;
|
||
|
||
extdef:
|
||
fndef
|
||
| datadef
|
||
ifobjc
|
||
| objcdef
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||
end ifobjc
|
||
| ASM_KEYWORD '(' expr ')' ';'
|
||
{ STRIP_NOPS ($3);
|
||
if ((TREE_CODE ($3) == ADDR_EXPR
|
||
&& TREE_CODE (TREE_OPERAND ($3, 0)) == STRING_CST)
|
||
|| TREE_CODE ($3) == STRING_CST)
|
||
assemble_asm ($3);
|
||
else
|
||
error ("argument of `asm' is not a constant string"); }
|
||
| extension extdef
|
||
{ RESTORE_WARN_FLAGS ($1); }
|
||
;
|
||
|
||
datadef:
|
||
setspecs notype_initdecls ';'
|
||
{ if (pedantic)
|
||
error ("ISO C forbids data definition with no type or storage class");
|
||
else if (!flag_traditional)
|
||
warning ("data definition has no type or storage class");
|
||
|
||
POP_DECLSPEC_STACK; }
|
||
| declspecs_nots setspecs notype_initdecls ';'
|
||
{ POP_DECLSPEC_STACK; }
|
||
| declspecs_ts setspecs initdecls ';'
|
||
{ POP_DECLSPEC_STACK; }
|
||
| declspecs ';'
|
||
{ shadow_tag ($1); }
|
||
| error ';'
|
||
| error '}'
|
||
| ';'
|
||
{ if (pedantic)
|
||
pedwarn ("ISO C does not allow extra `;' outside of a function"); }
|
||
;
|
||
|
||
fndef:
|
||
declspecs_ts setspecs declarator
|
||
{ if (! start_function (current_declspecs, $3,
|
||
all_prefix_attributes))
|
||
YYERROR1;
|
||
}
|
||
old_style_parm_decls
|
||
{ store_parm_decls (); }
|
||
save_filename save_lineno compstmt_or_error
|
||
{ DECL_SOURCE_FILE (current_function_decl) = $7;
|
||
DECL_SOURCE_LINE (current_function_decl) = $8;
|
||
finish_function (0, 1);
|
||
POP_DECLSPEC_STACK; }
|
||
| declspecs_ts setspecs declarator error
|
||
{ POP_DECLSPEC_STACK; }
|
||
| declspecs_nots setspecs notype_declarator
|
||
{ if (! start_function (current_declspecs, $3,
|
||
all_prefix_attributes))
|
||
YYERROR1;
|
||
}
|
||
old_style_parm_decls
|
||
{ store_parm_decls (); }
|
||
save_filename save_lineno compstmt_or_error
|
||
{ DECL_SOURCE_FILE (current_function_decl) = $7;
|
||
DECL_SOURCE_LINE (current_function_decl) = $8;
|
||
finish_function (0, 1);
|
||
POP_DECLSPEC_STACK; }
|
||
| declspecs_nots setspecs notype_declarator error
|
||
{ POP_DECLSPEC_STACK; }
|
||
| setspecs notype_declarator
|
||
{ if (! start_function (NULL_TREE, $2,
|
||
all_prefix_attributes))
|
||
YYERROR1;
|
||
}
|
||
old_style_parm_decls
|
||
{ store_parm_decls (); }
|
||
save_filename save_lineno compstmt_or_error
|
||
{ DECL_SOURCE_FILE (current_function_decl) = $6;
|
||
DECL_SOURCE_LINE (current_function_decl) = $7;
|
||
finish_function (0, 1);
|
||
POP_DECLSPEC_STACK; }
|
||
| setspecs notype_declarator error
|
||
{ POP_DECLSPEC_STACK; }
|
||
;
|
||
|
||
identifier:
|
||
IDENTIFIER
|
||
| TYPENAME
|
||
ifobjc
|
||
| OBJECTNAME
|
||
| CLASSNAME
|
||
end ifobjc
|
||
;
|
||
|
||
unop: '&'
|
||
{ $$ = ADDR_EXPR; }
|
||
| '-'
|
||
{ $$ = NEGATE_EXPR; }
|
||
| '+'
|
||
{ $$ = CONVERT_EXPR;
|
||
ifc
|
||
if (warn_traditional && !in_system_header)
|
||
warning ("traditional C rejects the unary plus operator");
|
||
end ifc
|
||
}
|
||
| PLUSPLUS
|
||
{ $$ = PREINCREMENT_EXPR; }
|
||
| MINUSMINUS
|
||
{ $$ = PREDECREMENT_EXPR; }
|
||
| '~'
|
||
{ $$ = BIT_NOT_EXPR; }
|
||
| '!'
|
||
{ $$ = TRUTH_NOT_EXPR; }
|
||
;
|
||
|
||
expr: nonnull_exprlist
|
||
{ $$ = build_compound_expr ($1); }
|
||
;
|
||
|
||
exprlist:
|
||
/* empty */
|
||
{ $$ = NULL_TREE; }
|
||
| nonnull_exprlist
|
||
;
|
||
|
||
nonnull_exprlist:
|
||
expr_no_commas
|
||
{ $$ = build_tree_list (NULL_TREE, $1); }
|
||
| nonnull_exprlist ',' expr_no_commas
|
||
{ chainon ($1, build_tree_list (NULL_TREE, $3)); }
|
||
;
|
||
|
||
unary_expr:
|
||
primary
|
||
| '*' cast_expr %prec UNARY
|
||
{ $$ = build_indirect_ref ($2, "unary *"); }
|
||
/* __extension__ turns off -pedantic for following primary. */
|
||
| extension cast_expr %prec UNARY
|
||
{ $$ = $2;
|
||
RESTORE_WARN_FLAGS ($1); }
|
||
| unop cast_expr %prec UNARY
|
||
{ $$ = build_unary_op ($1, $2, 0);
|
||
overflow_warning ($$); }
|
||
/* Refer to the address of a label as a pointer. */
|
||
| ANDAND identifier
|
||
{ $$ = finish_label_address_expr ($2); }
|
||
/* This seems to be impossible on some machines, so let's turn it off.
|
||
You can use __builtin_next_arg to find the anonymous stack args.
|
||
| '&' ELLIPSIS
|
||
{ tree types = TYPE_ARG_TYPES (TREE_TYPE (current_function_decl));
|
||
$$ = error_mark_node;
|
||
if (TREE_VALUE (tree_last (types)) == void_type_node)
|
||
error ("`&...' used in function with fixed number of arguments");
|
||
else
|
||
{
|
||
if (pedantic)
|
||
pedwarn ("ISO C forbids `&...'");
|
||
$$ = tree_last (DECL_ARGUMENTS (current_function_decl));
|
||
$$ = build_unary_op (ADDR_EXPR, $$, 0);
|
||
} }
|
||
*/
|
||
| sizeof unary_expr %prec UNARY
|
||
{ skip_evaluation--;
|
||
if (TREE_CODE ($2) == COMPONENT_REF
|
||
&& DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
|
||
error ("`sizeof' applied to a bit-field");
|
||
$$ = c_sizeof (TREE_TYPE ($2)); }
|
||
| sizeof '(' typename ')' %prec HYPERUNARY
|
||
{ skip_evaluation--;
|
||
$$ = c_sizeof (groktypename ($3)); }
|
||
| alignof unary_expr %prec UNARY
|
||
{ skip_evaluation--;
|
||
$$ = c_alignof_expr ($2); }
|
||
| alignof '(' typename ')' %prec HYPERUNARY
|
||
{ skip_evaluation--;
|
||
$$ = c_alignof (groktypename ($3)); }
|
||
| REALPART cast_expr %prec UNARY
|
||
{ $$ = build_unary_op (REALPART_EXPR, $2, 0); }
|
||
| IMAGPART cast_expr %prec UNARY
|
||
{ $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
|
||
;
|
||
|
||
sizeof:
|
||
SIZEOF { skip_evaluation++; }
|
||
;
|
||
|
||
alignof:
|
||
ALIGNOF { skip_evaluation++; }
|
||
;
|
||
|
||
typeof:
|
||
TYPEOF { skip_evaluation++; }
|
||
;
|
||
|
||
cast_expr:
|
||
unary_expr
|
||
| '(' typename ')' cast_expr %prec UNARY
|
||
{ $$ = c_cast_expr ($2, $4); }
|
||
;
|
||
|
||
expr_no_commas:
|
||
cast_expr
|
||
| expr_no_commas '+' expr_no_commas
|
||
{ $$ = parser_build_binary_op ($2, $1, $3); }
|
||
| expr_no_commas '-' expr_no_commas
|
||
{ $$ = parser_build_binary_op ($2, $1, $3); }
|
||
| expr_no_commas '*' expr_no_commas
|
||
{ $$ = parser_build_binary_op ($2, $1, $3); }
|
||
| expr_no_commas '/' expr_no_commas
|
||
{ $$ = parser_build_binary_op ($2, $1, $3); }
|
||
| expr_no_commas '%' expr_no_commas
|
||
{ $$ = parser_build_binary_op ($2, $1, $3); }
|
||
| expr_no_commas LSHIFT expr_no_commas
|
||
{ $$ = parser_build_binary_op ($2, $1, $3); }
|
||
| expr_no_commas RSHIFT expr_no_commas
|
||
{ $$ = parser_build_binary_op ($2, $1, $3); }
|
||
| expr_no_commas ARITHCOMPARE expr_no_commas
|
||
{ $$ = parser_build_binary_op ($2, $1, $3); }
|
||
| expr_no_commas EQCOMPARE expr_no_commas
|
||
{ $$ = parser_build_binary_op ($2, $1, $3); }
|
||
| expr_no_commas '&' expr_no_commas
|
||
{ $$ = parser_build_binary_op ($2, $1, $3); }
|
||
| expr_no_commas '|' expr_no_commas
|
||
{ $$ = parser_build_binary_op ($2, $1, $3); }
|
||
| expr_no_commas '^' expr_no_commas
|
||
{ $$ = parser_build_binary_op ($2, $1, $3); }
|
||
| expr_no_commas ANDAND
|
||
{ $1 = truthvalue_conversion (default_conversion ($1));
|
||
skip_evaluation += $1 == boolean_false_node; }
|
||
expr_no_commas
|
||
{ skip_evaluation -= $1 == boolean_false_node;
|
||
$$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
|
||
| expr_no_commas OROR
|
||
{ $1 = truthvalue_conversion (default_conversion ($1));
|
||
skip_evaluation += $1 == boolean_true_node; }
|
||
expr_no_commas
|
||
{ skip_evaluation -= $1 == boolean_true_node;
|
||
$$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
|
||
| expr_no_commas '?'
|
||
{ $1 = truthvalue_conversion (default_conversion ($1));
|
||
skip_evaluation += $1 == boolean_false_node; }
|
||
expr ':'
|
||
{ skip_evaluation += (($1 == boolean_true_node)
|
||
- ($1 == boolean_false_node)); }
|
||
expr_no_commas
|
||
{ skip_evaluation -= $1 == boolean_true_node;
|
||
$$ = build_conditional_expr ($1, $4, $7); }
|
||
| expr_no_commas '?'
|
||
{ if (pedantic)
|
||
pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
|
||
/* Make sure first operand is calculated only once. */
|
||
$<ttype>2 = save_expr ($1);
|
||
$1 = truthvalue_conversion (default_conversion ($<ttype>2));
|
||
skip_evaluation += $1 == boolean_true_node; }
|
||
':' expr_no_commas
|
||
{ skip_evaluation -= $1 == boolean_true_node;
|
||
$$ = build_conditional_expr ($1, $<ttype>2, $5); }
|
||
| expr_no_commas '=' expr_no_commas
|
||
{ char class;
|
||
$$ = build_modify_expr ($1, NOP_EXPR, $3);
|
||
class = TREE_CODE_CLASS (TREE_CODE ($$));
|
||
if (IS_EXPR_CODE_CLASS (class))
|
||
C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
|
||
}
|
||
| expr_no_commas ASSIGN expr_no_commas
|
||
{ char class;
|
||
$$ = build_modify_expr ($1, $2, $3);
|
||
/* This inhibits warnings in truthvalue_conversion. */
|
||
class = TREE_CODE_CLASS (TREE_CODE ($$));
|
||
if (IS_EXPR_CODE_CLASS (class))
|
||
C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
|
||
}
|
||
;
|
||
|
||
primary:
|
||
IDENTIFIER
|
||
{
|
||
if (yychar == YYEMPTY)
|
||
yychar = YYLEX;
|
||
$$ = build_external_ref ($1, yychar == '(');
|
||
}
|
||
| CONSTANT
|
||
| string
|
||
{ $$ = combine_strings ($1); }
|
||
| VAR_FUNC_NAME
|
||
{ $$ = fname_decl (C_RID_CODE ($$), $$); }
|
||
| '(' typename ')' '{'
|
||
{ start_init (NULL_TREE, NULL, 0);
|
||
$2 = groktypename ($2);
|
||
really_start_incremental_init ($2); }
|
||
initlist_maybe_comma '}' %prec UNARY
|
||
{ tree constructor = pop_init_level (0);
|
||
tree type = $2;
|
||
finish_init ();
|
||
|
||
if (pedantic && ! flag_isoc99)
|
||
pedwarn ("ISO C89 forbids compound literals");
|
||
$$ = build_compound_literal (type, constructor);
|
||
}
|
||
| '(' expr ')'
|
||
{ char class = TREE_CODE_CLASS (TREE_CODE ($2));
|
||
if (IS_EXPR_CODE_CLASS (class))
|
||
C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
|
||
$$ = $2; }
|
||
| '(' error ')'
|
||
{ $$ = error_mark_node; }
|
||
| compstmt_primary_start compstmt_nostart ')'
|
||
{ tree saved_last_tree;
|
||
|
||
if (pedantic)
|
||
pedwarn ("ISO C forbids braced-groups within expressions");
|
||
pop_label_level ();
|
||
|
||
saved_last_tree = COMPOUND_BODY ($1);
|
||
RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
|
||
last_tree = saved_last_tree;
|
||
TREE_CHAIN (last_tree) = NULL_TREE;
|
||
if (!last_expr_type)
|
||
last_expr_type = void_type_node;
|
||
$$ = build1 (STMT_EXPR, last_expr_type, $1);
|
||
TREE_SIDE_EFFECTS ($$) = 1;
|
||
}
|
||
| compstmt_primary_start error ')'
|
||
{
|
||
pop_label_level ();
|
||
last_tree = COMPOUND_BODY ($1);
|
||
TREE_CHAIN (last_tree) = NULL_TREE;
|
||
$$ = error_mark_node;
|
||
}
|
||
| primary '(' exprlist ')' %prec '.'
|
||
{ $$ = build_function_call ($1, $3); }
|
||
| VA_ARG '(' expr_no_commas ',' typename ')'
|
||
{ $$ = build_va_arg ($3, groktypename ($5)); }
|
||
|
||
| CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ',' expr_no_commas ')'
|
||
{
|
||
tree c;
|
||
|
||
c = fold ($3);
|
||
STRIP_NOPS (c);
|
||
if (TREE_CODE (c) != INTEGER_CST)
|
||
error ("first argument to __builtin_choose_expr not a constant");
|
||
$$ = integer_zerop (c) ? $7 : $5;
|
||
}
|
||
| TYPES_COMPATIBLE_P '(' typename ',' typename ')'
|
||
{
|
||
tree e1, e2;
|
||
|
||
e1 = TYPE_MAIN_VARIANT (groktypename ($3));
|
||
e2 = TYPE_MAIN_VARIANT (groktypename ($5));
|
||
|
||
$$ = comptypes (e1, e2)
|
||
? build_int_2 (1, 0) : build_int_2 (0, 0);
|
||
}
|
||
| primary '[' expr ']' %prec '.'
|
||
{ $$ = build_array_ref ($1, $3); }
|
||
| primary '.' identifier
|
||
{
|
||
ifobjc
|
||
if (!is_public ($1, $3))
|
||
$$ = error_mark_node;
|
||
else
|
||
end ifobjc
|
||
$$ = build_component_ref ($1, $3);
|
||
}
|
||
| primary POINTSAT identifier
|
||
{
|
||
tree expr = build_indirect_ref ($1, "->");
|
||
|
||
ifobjc
|
||
if (!is_public (expr, $3))
|
||
$$ = error_mark_node;
|
||
else
|
||
end ifobjc
|
||
$$ = build_component_ref (expr, $3);
|
||
}
|
||
| primary PLUSPLUS
|
||
{ $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
|
||
| primary MINUSMINUS
|
||
{ $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
|
||
ifobjc
|
||
| objcmessageexpr
|
||
{ $$ = build_message_expr ($1); }
|
||
| objcselectorexpr
|
||
{ $$ = build_selector_expr ($1); }
|
||
| objcprotocolexpr
|
||
{ $$ = build_protocol_expr ($1); }
|
||
| objcencodeexpr
|
||
{ $$ = build_encode_expr ($1); }
|
||
| objc_string
|
||
{ $$ = build_objc_string_object ($1); }
|
||
end ifobjc
|
||
;
|
||
|
||
/* Produces a STRING_CST with perhaps more STRING_CSTs chained onto it. */
|
||
string:
|
||
STRING
|
||
| string STRING
|
||
{
|
||
ifc
|
||
static int last_lineno = 0;
|
||
static const char *last_input_filename = 0;
|
||
end ifc
|
||
$$ = chainon ($1, $2);
|
||
ifc
|
||
if (warn_traditional && !in_system_header
|
||
&& (lineno != last_lineno || !last_input_filename ||
|
||
strcmp (last_input_filename, input_filename)))
|
||
{
|
||
warning ("traditional C rejects string concatenation");
|
||
last_lineno = lineno;
|
||
last_input_filename = input_filename;
|
||
}
|
||
end ifc
|
||
}
|
||
;
|
||
|
||
ifobjc
|
||
/* Produces an STRING_CST with perhaps more STRING_CSTs chained
|
||
onto it, which is to be read as an ObjC string object. */
|
||
objc_string:
|
||
'@' STRING
|
||
{ $$ = $2; }
|
||
| objc_string '@' STRING
|
||
{ $$ = chainon ($1, $3); }
|
||
;
|
||
end ifobjc
|
||
|
||
old_style_parm_decls:
|
||
/* empty */
|
||
| datadecls
|
||
| datadecls ELLIPSIS
|
||
/* ... is used here to indicate a varargs function. */
|
||
{ c_mark_varargs ();
|
||
if (pedantic)
|
||
pedwarn ("ISO C does not permit use of `varargs.h'"); }
|
||
;
|
||
|
||
/* The following are analogous to lineno_decl, decls and decl
|
||
except that they do not allow nested functions.
|
||
They are used for old-style parm decls. */
|
||
lineno_datadecl:
|
||
save_filename save_lineno datadecl
|
||
{ }
|
||
;
|
||
|
||
datadecls:
|
||
lineno_datadecl
|
||
| errstmt
|
||
| datadecls lineno_datadecl
|
||
| lineno_datadecl errstmt
|
||
;
|
||
|
||
/* We don't allow prefix attributes here because they cause reduce/reduce
|
||
conflicts: we can't know whether we're parsing a function decl with
|
||
attribute suffix, or function defn with attribute prefix on first old
|
||
style parm. */
|
||
datadecl:
|
||
declspecs_ts_nosa setspecs initdecls ';'
|
||
{ POP_DECLSPEC_STACK; }
|
||
| declspecs_nots_nosa setspecs notype_initdecls ';'
|
||
{ POP_DECLSPEC_STACK; }
|
||
| declspecs_ts_nosa ';'
|
||
{ shadow_tag_warned ($1, 1);
|
||
pedwarn ("empty declaration"); }
|
||
| declspecs_nots_nosa ';'
|
||
{ pedwarn ("empty declaration"); }
|
||
;
|
||
|
||
/* This combination which saves a lineno before a decl
|
||
is the normal thing to use, rather than decl itself.
|
||
This is to avoid shift/reduce conflicts in contexts
|
||
where statement labels are allowed. */
|
||
lineno_decl:
|
||
save_filename save_lineno decl
|
||
{ }
|
||
;
|
||
|
||
/* records the type and storage class specs to use for processing
|
||
the declarators that follow.
|
||
Maintains a stack of outer-level values of current_declspecs,
|
||
for the sake of parm declarations nested in function declarators. */
|
||
setspecs: /* empty */
|
||
{ pending_xref_error ();
|
||
PUSH_DECLSPEC_STACK;
|
||
split_specs_attrs ($<ttype>0,
|
||
¤t_declspecs, &prefix_attributes);
|
||
all_prefix_attributes = prefix_attributes; }
|
||
;
|
||
|
||
/* Possibly attributes after a comma, which should reset all_prefix_attributes
|
||
to prefix_attributes with these ones chained on the front. */
|
||
maybe_resetattrs:
|
||
maybe_attribute
|
||
{ all_prefix_attributes = chainon ($1, prefix_attributes); }
|
||
;
|
||
|
||
decl:
|
||
declspecs_ts setspecs initdecls ';'
|
||
{ POP_DECLSPEC_STACK; }
|
||
| declspecs_nots setspecs notype_initdecls ';'
|
||
{ POP_DECLSPEC_STACK; }
|
||
| declspecs_ts setspecs nested_function
|
||
{ POP_DECLSPEC_STACK; }
|
||
| declspecs_nots setspecs notype_nested_function
|
||
{ POP_DECLSPEC_STACK; }
|
||
| declspecs ';'
|
||
{ shadow_tag ($1); }
|
||
| extension decl
|
||
{ RESTORE_WARN_FLAGS ($1); }
|
||
;
|
||
|
||
/* A list of declaration specifiers. These are:
|
||
|
||
- Storage class specifiers (SCSPEC), which for GCC currently include
|
||
function specifiers ("inline").
|
||
|
||
- Type specifiers (typespec_*).
|
||
|
||
- Type qualifiers (TYPE_QUAL).
|
||
|
||
- Attribute specifier lists (attributes).
|
||
|
||
These are stored as a TREE_LIST; the head of the list is the last
|
||
item in the specifier list. Each entry in the list has either a
|
||
TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
|
||
is a single other specifier or qualifier; and a TREE_CHAIN that is the
|
||
rest of the list. TREE_STATIC is set on the list if something other
|
||
than a storage class specifier or attribute has been seen; this is used
|
||
to warn for the obsolescent usage of storage class specifiers other than
|
||
at the start of the list. (Doing this properly would require function
|
||
specifiers to be handled separately from storage class specifiers.)
|
||
|
||
The various cases below are classified according to:
|
||
|
||
(a) Whether a storage class specifier is included or not; some
|
||
places in the grammar disallow storage class specifiers (_sc or _nosc).
|
||
|
||
(b) Whether a type specifier has been seen; after a type specifier,
|
||
a typedef name is an identifier to redeclare (_ts or _nots).
|
||
|
||
(c) Whether the list starts with an attribute; in certain places,
|
||
the grammar requires specifiers that don't start with an attribute
|
||
(_sa or _nosa).
|
||
|
||
(d) Whether the list ends with an attribute (or a specifier such that
|
||
any following attribute would have been parsed as part of that specifier);
|
||
this avoids shift-reduce conflicts in the parsing of attributes
|
||
(_ea or _noea).
|
||
|
||
TODO:
|
||
|
||
(i) Distinguish between function specifiers and storage class specifiers,
|
||
at least for the purpose of warnings about obsolescent usage.
|
||
|
||
(ii) Halve the number of productions here by eliminating the _sc/_nosc
|
||
distinction and instead checking where required that storage class
|
||
specifiers aren't present. */
|
||
|
||
/* Declspecs which contain at least one type specifier or typedef name.
|
||
(Just `const' or `volatile' is not enough.)
|
||
A typedef'd name following these is taken as a name to be declared.
|
||
Declspecs have a non-NULL TREE_VALUE, attributes do not. */
|
||
|
||
declspecs_nosc_nots_nosa_noea:
|
||
TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_nots_nosa_noea TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_nots_nosa_ea TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
;
|
||
|
||
declspecs_nosc_nots_nosa_ea:
|
||
declspecs_nosc_nots_nosa_noea attributes
|
||
{ $$ = tree_cons ($2, NULL_TREE, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
;
|
||
|
||
declspecs_nosc_nots_sa_noea:
|
||
declspecs_nosc_nots_sa_noea TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_nots_sa_ea TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
;
|
||
|
||
declspecs_nosc_nots_sa_ea:
|
||
attributes
|
||
{ $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
|
||
TREE_STATIC ($$) = 0; }
|
||
| declspecs_nosc_nots_sa_noea attributes
|
||
{ $$ = tree_cons ($2, NULL_TREE, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
;
|
||
|
||
declspecs_nosc_ts_nosa_noea:
|
||
typespec_nonattr
|
||
{ $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_ts_nosa_noea TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_ts_nosa_ea TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_nots_nosa_noea typespec_nonattr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_nots_nosa_ea typespec_nonattr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
;
|
||
|
||
declspecs_nosc_ts_nosa_ea:
|
||
typespec_attr
|
||
{ $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_ts_nosa_noea attributes
|
||
{ $$ = tree_cons ($2, NULL_TREE, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
| declspecs_nosc_ts_nosa_noea typespec_reserved_attr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_ts_nosa_ea typespec_reserved_attr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_nots_nosa_noea typespec_attr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_nots_nosa_ea typespec_attr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
;
|
||
|
||
declspecs_nosc_ts_sa_noea:
|
||
declspecs_nosc_ts_sa_noea TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_ts_sa_ea TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_nots_sa_noea typespec_nonattr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_nots_sa_ea typespec_nonattr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
;
|
||
|
||
declspecs_nosc_ts_sa_ea:
|
||
declspecs_nosc_ts_sa_noea attributes
|
||
{ $$ = tree_cons ($2, NULL_TREE, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
| declspecs_nosc_ts_sa_noea typespec_reserved_attr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_ts_sa_ea typespec_reserved_attr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_nots_sa_noea typespec_attr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_nots_sa_ea typespec_attr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
;
|
||
|
||
declspecs_sc_nots_nosa_noea:
|
||
SCSPEC
|
||
{ $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
|
||
TREE_STATIC ($$) = 0; }
|
||
| declspecs_sc_nots_nosa_noea TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_sc_nots_nosa_ea TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_nots_nosa_noea SCSPEC
|
||
{ if (extra_warnings && TREE_STATIC ($1))
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
| declspecs_nosc_nots_nosa_ea SCSPEC
|
||
{ if (extra_warnings && TREE_STATIC ($1))
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
| declspecs_sc_nots_nosa_noea SCSPEC
|
||
{ if (extra_warnings && TREE_STATIC ($1))
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
| declspecs_sc_nots_nosa_ea SCSPEC
|
||
{ if (extra_warnings && TREE_STATIC ($1))
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
;
|
||
|
||
declspecs_sc_nots_nosa_ea:
|
||
declspecs_sc_nots_nosa_noea attributes
|
||
{ $$ = tree_cons ($2, NULL_TREE, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
;
|
||
|
||
declspecs_sc_nots_sa_noea:
|
||
declspecs_sc_nots_sa_noea TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_sc_nots_sa_ea TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_nots_sa_noea SCSPEC
|
||
{ if (extra_warnings && TREE_STATIC ($1))
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
| declspecs_nosc_nots_sa_ea SCSPEC
|
||
{ if (extra_warnings && TREE_STATIC ($1))
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
| declspecs_sc_nots_sa_noea SCSPEC
|
||
{ if (extra_warnings && TREE_STATIC ($1))
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
| declspecs_sc_nots_sa_ea SCSPEC
|
||
{ if (extra_warnings && TREE_STATIC ($1))
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
;
|
||
|
||
declspecs_sc_nots_sa_ea:
|
||
declspecs_sc_nots_sa_noea attributes
|
||
{ $$ = tree_cons ($2, NULL_TREE, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
;
|
||
|
||
declspecs_sc_ts_nosa_noea:
|
||
declspecs_sc_ts_nosa_noea TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_sc_ts_nosa_ea TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_sc_nots_nosa_noea typespec_nonattr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_sc_nots_nosa_ea typespec_nonattr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_ts_nosa_noea SCSPEC
|
||
{ if (extra_warnings && TREE_STATIC ($1))
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
| declspecs_nosc_ts_nosa_ea SCSPEC
|
||
{ if (extra_warnings && TREE_STATIC ($1))
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
| declspecs_sc_ts_nosa_noea SCSPEC
|
||
{ if (extra_warnings && TREE_STATIC ($1))
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
| declspecs_sc_ts_nosa_ea SCSPEC
|
||
{ if (extra_warnings && TREE_STATIC ($1))
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
;
|
||
|
||
declspecs_sc_ts_nosa_ea:
|
||
declspecs_sc_ts_nosa_noea attributes
|
||
{ $$ = tree_cons ($2, NULL_TREE, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
| declspecs_sc_ts_nosa_noea typespec_reserved_attr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_sc_ts_nosa_ea typespec_reserved_attr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_sc_nots_nosa_noea typespec_attr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_sc_nots_nosa_ea typespec_attr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
;
|
||
|
||
declspecs_sc_ts_sa_noea:
|
||
declspecs_sc_ts_sa_noea TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_sc_ts_sa_ea TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_sc_ts_sa_noea typespec_reserved_nonattr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_sc_ts_sa_ea typespec_reserved_nonattr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_sc_nots_sa_noea typespec_nonattr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_sc_nots_sa_ea typespec_nonattr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_nosc_ts_sa_noea SCSPEC
|
||
{ if (extra_warnings && TREE_STATIC ($1))
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
| declspecs_nosc_ts_sa_ea SCSPEC
|
||
{ if (extra_warnings && TREE_STATIC ($1))
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
| declspecs_sc_ts_sa_noea SCSPEC
|
||
{ if (extra_warnings && TREE_STATIC ($1))
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
| declspecs_sc_ts_sa_ea SCSPEC
|
||
{ if (extra_warnings && TREE_STATIC ($1))
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
;
|
||
|
||
declspecs_sc_ts_sa_ea:
|
||
declspecs_sc_ts_sa_noea attributes
|
||
{ $$ = tree_cons ($2, NULL_TREE, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
| declspecs_sc_ts_sa_noea typespec_reserved_attr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_sc_ts_sa_ea typespec_reserved_attr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_sc_nots_sa_noea typespec_attr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declspecs_sc_nots_sa_ea typespec_attr
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
;
|
||
|
||
/* Particular useful classes of declspecs. */
|
||
declspecs_ts:
|
||
declspecs_nosc_ts_nosa_noea
|
||
| declspecs_nosc_ts_nosa_ea
|
||
| declspecs_nosc_ts_sa_noea
|
||
| declspecs_nosc_ts_sa_ea
|
||
| declspecs_sc_ts_nosa_noea
|
||
| declspecs_sc_ts_nosa_ea
|
||
| declspecs_sc_ts_sa_noea
|
||
| declspecs_sc_ts_sa_ea
|
||
;
|
||
|
||
declspecs_nots:
|
||
declspecs_nosc_nots_nosa_noea
|
||
| declspecs_nosc_nots_nosa_ea
|
||
| declspecs_nosc_nots_sa_noea
|
||
| declspecs_nosc_nots_sa_ea
|
||
| declspecs_sc_nots_nosa_noea
|
||
| declspecs_sc_nots_nosa_ea
|
||
| declspecs_sc_nots_sa_noea
|
||
| declspecs_sc_nots_sa_ea
|
||
;
|
||
|
||
declspecs_ts_nosa:
|
||
declspecs_nosc_ts_nosa_noea
|
||
| declspecs_nosc_ts_nosa_ea
|
||
| declspecs_sc_ts_nosa_noea
|
||
| declspecs_sc_ts_nosa_ea
|
||
;
|
||
|
||
declspecs_nots_nosa:
|
||
declspecs_nosc_nots_nosa_noea
|
||
| declspecs_nosc_nots_nosa_ea
|
||
| declspecs_sc_nots_nosa_noea
|
||
| declspecs_sc_nots_nosa_ea
|
||
;
|
||
|
||
declspecs_nosc_ts:
|
||
declspecs_nosc_ts_nosa_noea
|
||
| declspecs_nosc_ts_nosa_ea
|
||
| declspecs_nosc_ts_sa_noea
|
||
| declspecs_nosc_ts_sa_ea
|
||
;
|
||
|
||
declspecs_nosc_nots:
|
||
declspecs_nosc_nots_nosa_noea
|
||
| declspecs_nosc_nots_nosa_ea
|
||
| declspecs_nosc_nots_sa_noea
|
||
| declspecs_nosc_nots_sa_ea
|
||
;
|
||
|
||
declspecs_nosc:
|
||
declspecs_nosc_ts_nosa_noea
|
||
| declspecs_nosc_ts_nosa_ea
|
||
| declspecs_nosc_ts_sa_noea
|
||
| declspecs_nosc_ts_sa_ea
|
||
| declspecs_nosc_nots_nosa_noea
|
||
| declspecs_nosc_nots_nosa_ea
|
||
| declspecs_nosc_nots_sa_noea
|
||
| declspecs_nosc_nots_sa_ea
|
||
;
|
||
|
||
declspecs:
|
||
declspecs_nosc_nots_nosa_noea
|
||
| declspecs_nosc_nots_nosa_ea
|
||
| declspecs_nosc_nots_sa_noea
|
||
| declspecs_nosc_nots_sa_ea
|
||
| declspecs_nosc_ts_nosa_noea
|
||
| declspecs_nosc_ts_nosa_ea
|
||
| declspecs_nosc_ts_sa_noea
|
||
| declspecs_nosc_ts_sa_ea
|
||
| declspecs_sc_nots_nosa_noea
|
||
| declspecs_sc_nots_nosa_ea
|
||
| declspecs_sc_nots_sa_noea
|
||
| declspecs_sc_nots_sa_ea
|
||
| declspecs_sc_ts_nosa_noea
|
||
| declspecs_sc_ts_nosa_ea
|
||
| declspecs_sc_ts_sa_noea
|
||
| declspecs_sc_ts_sa_ea
|
||
;
|
||
|
||
/* A (possibly empty) sequence of type qualifiers and attributes. */
|
||
maybe_type_quals_attrs:
|
||
/* empty */
|
||
{ $$ = NULL_TREE; }
|
||
| declspecs_nosc_nots
|
||
{ $$ = $1; }
|
||
;
|
||
|
||
/* A type specifier (but not a type qualifier).
|
||
Once we have seen one of these in a declaration,
|
||
if a typedef name appears then it is being redeclared.
|
||
|
||
The _reserved versions start with a reserved word and may appear anywhere
|
||
in the declaration specifiers; the _nonreserved versions may only
|
||
appear before any other type specifiers, and after that are (if names)
|
||
being redeclared.
|
||
|
||
FIXME: should the _nonreserved version be restricted to names being
|
||
redeclared only? The other entries there relate only the GNU extensions
|
||
and Objective C, and are historically parsed thus, and don't make sense
|
||
after other type specifiers, but it might be cleaner to count them as
|
||
_reserved.
|
||
|
||
_attr means: specifiers that either end with attributes,
|
||
or are such that any following attributes would
|
||
be parsed as part of the specifier.
|
||
|
||
_nonattr: specifiers. */
|
||
|
||
typespec_nonattr:
|
||
typespec_reserved_nonattr
|
||
| typespec_nonreserved_nonattr
|
||
;
|
||
|
||
typespec_attr:
|
||
typespec_reserved_attr
|
||
;
|
||
|
||
typespec_reserved_nonattr:
|
||
TYPESPEC
|
||
{ OBJC_NEED_RAW_IDENTIFIER (1); }
|
||
| structsp_nonattr
|
||
;
|
||
|
||
typespec_reserved_attr:
|
||
structsp_attr
|
||
;
|
||
|
||
typespec_nonreserved_nonattr:
|
||
TYPENAME
|
||
{ /* For a typedef name, record the meaning, not the name.
|
||
In case of `foo foo, bar;'. */
|
||
$$ = lookup_name ($1); }
|
||
ifobjc
|
||
| CLASSNAME protocolrefs
|
||
{ $$ = get_static_reference ($1, $2); }
|
||
| OBJECTNAME protocolrefs
|
||
{ $$ = get_object_reference ($2); }
|
||
|
||
/* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
|
||
- nisse@lysator.liu.se */
|
||
| non_empty_protocolrefs
|
||
{ $$ = get_object_reference ($1); }
|
||
end ifobjc
|
||
| typeof '(' expr ')'
|
||
{ skip_evaluation--; $$ = TREE_TYPE ($3); }
|
||
| typeof '(' typename ')'
|
||
{ skip_evaluation--; $$ = groktypename ($3); }
|
||
;
|
||
|
||
/* typespec_nonreserved_attr does not exist. */
|
||
|
||
initdecls:
|
||
initdcl
|
||
| initdecls ',' maybe_resetattrs initdcl
|
||
;
|
||
|
||
notype_initdecls:
|
||
notype_initdcl
|
||
| notype_initdecls ',' maybe_resetattrs notype_initdcl
|
||
;
|
||
|
||
maybeasm:
|
||
/* empty */
|
||
{ $$ = NULL_TREE; }
|
||
| ASM_KEYWORD '(' string ')'
|
||
{ if (TREE_CHAIN ($3)) $3 = combine_strings ($3);
|
||
$$ = $3;
|
||
}
|
||
;
|
||
|
||
initdcl:
|
||
declarator maybeasm maybe_attribute '='
|
||
{ $<ttype>$ = start_decl ($1, current_declspecs, 1,
|
||
chainon ($3, all_prefix_attributes));
|
||
start_init ($<ttype>$, $2, global_bindings_p ()); }
|
||
init
|
||
/* Note how the declaration of the variable is in effect while its init is parsed! */
|
||
{ finish_init ();
|
||
finish_decl ($<ttype>5, $6, $2); }
|
||
| declarator maybeasm maybe_attribute
|
||
{ tree d = start_decl ($1, current_declspecs, 0,
|
||
chainon ($3, all_prefix_attributes));
|
||
finish_decl (d, NULL_TREE, $2);
|
||
}
|
||
;
|
||
|
||
notype_initdcl:
|
||
notype_declarator maybeasm maybe_attribute '='
|
||
{ $<ttype>$ = start_decl ($1, current_declspecs, 1,
|
||
chainon ($3, all_prefix_attributes));
|
||
start_init ($<ttype>$, $2, global_bindings_p ()); }
|
||
init
|
||
/* Note how the declaration of the variable is in effect while its init is parsed! */
|
||
{ finish_init ();
|
||
finish_decl ($<ttype>5, $6, $2); }
|
||
| notype_declarator maybeasm maybe_attribute
|
||
{ tree d = start_decl ($1, current_declspecs, 0,
|
||
chainon ($3, all_prefix_attributes));
|
||
finish_decl (d, NULL_TREE, $2); }
|
||
;
|
||
/* the * rules are dummies to accept the Apollo extended syntax
|
||
so that the header files compile. */
|
||
maybe_attribute:
|
||
/* empty */
|
||
{ $$ = NULL_TREE; }
|
||
| attributes
|
||
{ $$ = $1; }
|
||
;
|
||
|
||
attributes:
|
||
attribute
|
||
{ $$ = $1; }
|
||
| attributes attribute
|
||
{ $$ = chainon ($1, $2); }
|
||
;
|
||
|
||
attribute:
|
||
ATTRIBUTE '(' '(' attribute_list ')' ')'
|
||
{ $$ = $4; }
|
||
;
|
||
|
||
attribute_list:
|
||
attrib
|
||
{ $$ = $1; }
|
||
| attribute_list ',' attrib
|
||
{ $$ = chainon ($1, $3); }
|
||
;
|
||
|
||
attrib:
|
||
/* empty */
|
||
{ $$ = NULL_TREE; }
|
||
| any_word
|
||
{ $$ = build_tree_list ($1, NULL_TREE); }
|
||
| any_word '(' IDENTIFIER ')'
|
||
{ $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
|
||
| any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
|
||
{ $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
|
||
| any_word '(' exprlist ')'
|
||
{ $$ = build_tree_list ($1, $3); }
|
||
;
|
||
|
||
/* This still leaves out most reserved keywords,
|
||
shouldn't we include them? */
|
||
|
||
any_word:
|
||
identifier
|
||
| SCSPEC
|
||
| TYPESPEC
|
||
| TYPE_QUAL
|
||
;
|
||
|
||
/* Initializers. `init' is the entry point. */
|
||
|
||
init:
|
||
expr_no_commas
|
||
| '{'
|
||
{ really_start_incremental_init (NULL_TREE); }
|
||
initlist_maybe_comma '}'
|
||
{ $$ = pop_init_level (0); }
|
||
| error
|
||
{ $$ = error_mark_node; }
|
||
;
|
||
|
||
/* `initlist_maybe_comma' is the guts of an initializer in braces. */
|
||
initlist_maybe_comma:
|
||
/* empty */
|
||
{ if (pedantic)
|
||
pedwarn ("ISO C forbids empty initializer braces"); }
|
||
| initlist1 maybecomma
|
||
;
|
||
|
||
initlist1:
|
||
initelt
|
||
| initlist1 ',' initelt
|
||
;
|
||
|
||
/* `initelt' is a single element of an initializer.
|
||
It may use braces. */
|
||
initelt:
|
||
designator_list '=' initval
|
||
{ if (pedantic && ! flag_isoc99)
|
||
pedwarn ("ISO C89 forbids specifying subobject to initialize"); }
|
||
| designator initval
|
||
{ if (pedantic)
|
||
pedwarn ("obsolete use of designated initializer without `='"); }
|
||
| identifier ':'
|
||
{ set_init_label ($1);
|
||
if (pedantic)
|
||
pedwarn ("obsolete use of designated initializer with `:'"); }
|
||
initval
|
||
| initval
|
||
;
|
||
|
||
initval:
|
||
'{'
|
||
{ push_init_level (0); }
|
||
initlist_maybe_comma '}'
|
||
{ process_init_element (pop_init_level (0)); }
|
||
| expr_no_commas
|
||
{ process_init_element ($1); }
|
||
| error
|
||
;
|
||
|
||
designator_list:
|
||
designator
|
||
| designator_list designator
|
||
;
|
||
|
||
designator:
|
||
'.' identifier
|
||
{ set_init_label ($2); }
|
||
/* These are for labeled elements. The syntax for an array element
|
||
initializer conflicts with the syntax for an Objective-C message,
|
||
so don't include these productions in the Objective-C grammar. */
|
||
ifc
|
||
| '[' expr_no_commas ELLIPSIS expr_no_commas ']'
|
||
{ set_init_index ($2, $4);
|
||
if (pedantic)
|
||
pedwarn ("ISO C forbids specifying range of elements to initialize"); }
|
||
| '[' expr_no_commas ']'
|
||
{ set_init_index ($2, NULL_TREE); }
|
||
end ifc
|
||
;
|
||
|
||
nested_function:
|
||
declarator
|
||
{ if (pedantic)
|
||
pedwarn ("ISO C forbids nested functions");
|
||
|
||
push_function_context ();
|
||
if (! start_function (current_declspecs, $1,
|
||
all_prefix_attributes))
|
||
{
|
||
pop_function_context ();
|
||
YYERROR1;
|
||
}
|
||
}
|
||
old_style_parm_decls
|
||
{ store_parm_decls (); }
|
||
/* This used to use compstmt_or_error.
|
||
That caused a bug with input `f(g) int g {}',
|
||
where the use of YYERROR1 above caused an error
|
||
which then was handled by compstmt_or_error.
|
||
There followed a repeated execution of that same rule,
|
||
which called YYERROR1 again, and so on. */
|
||
save_filename save_lineno compstmt
|
||
{ tree decl = current_function_decl;
|
||
DECL_SOURCE_FILE (decl) = $5;
|
||
DECL_SOURCE_LINE (decl) = $6;
|
||
finish_function (1, 1);
|
||
pop_function_context ();
|
||
add_decl_stmt (decl); }
|
||
;
|
||
|
||
notype_nested_function:
|
||
notype_declarator
|
||
{ if (pedantic)
|
||
pedwarn ("ISO C forbids nested functions");
|
||
|
||
push_function_context ();
|
||
if (! start_function (current_declspecs, $1,
|
||
all_prefix_attributes))
|
||
{
|
||
pop_function_context ();
|
||
YYERROR1;
|
||
}
|
||
}
|
||
old_style_parm_decls
|
||
{ store_parm_decls (); }
|
||
/* This used to use compstmt_or_error.
|
||
That caused a bug with input `f(g) int g {}',
|
||
where the use of YYERROR1 above caused an error
|
||
which then was handled by compstmt_or_error.
|
||
There followed a repeated execution of that same rule,
|
||
which called YYERROR1 again, and so on. */
|
||
save_filename save_lineno compstmt
|
||
{ tree decl = current_function_decl;
|
||
DECL_SOURCE_FILE (decl) = $5;
|
||
DECL_SOURCE_LINE (decl) = $6;
|
||
finish_function (1, 1);
|
||
pop_function_context ();
|
||
add_decl_stmt (decl); }
|
||
;
|
||
|
||
/* Any kind of declarator (thus, all declarators allowed
|
||
after an explicit typespec). */
|
||
|
||
declarator:
|
||
after_type_declarator
|
||
| notype_declarator
|
||
;
|
||
|
||
/* A declarator that is allowed only after an explicit typespec. */
|
||
|
||
after_type_declarator:
|
||
'(' maybe_attribute after_type_declarator ')'
|
||
{ $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
|
||
| after_type_declarator '(' parmlist_or_identifiers %prec '.'
|
||
{ $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
|
||
/* | after_type_declarator '(' error ')' %prec '.'
|
||
{ $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
|
||
poplevel (0, 0, 0); } */
|
||
| after_type_declarator array_declarator %prec '.'
|
||
{ $$ = set_array_declarator_type ($2, $1, 0); }
|
||
| '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
|
||
{ $$ = make_pointer_declarator ($2, $3); }
|
||
| TYPENAME
|
||
ifobjc
|
||
| OBJECTNAME
|
||
end ifobjc
|
||
;
|
||
|
||
/* Kinds of declarator that can appear in a parameter list
|
||
in addition to notype_declarator. This is like after_type_declarator
|
||
but does not allow a typedef name in parentheses as an identifier
|
||
(because it would conflict with a function with that typedef as arg). */
|
||
parm_declarator:
|
||
parm_declarator_starttypename
|
||
| parm_declarator_nostarttypename
|
||
;
|
||
|
||
parm_declarator_starttypename:
|
||
parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
|
||
{ $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
|
||
/* | parm_declarator_starttypename '(' error ')' %prec '.'
|
||
{ $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
|
||
poplevel (0, 0, 0); } */
|
||
| parm_declarator_starttypename array_declarator %prec '.'
|
||
{ $$ = set_array_declarator_type ($2, $1, 0); }
|
||
| TYPENAME
|
||
ifobjc
|
||
| OBJECTNAME
|
||
end ifobjc
|
||
;
|
||
|
||
parm_declarator_nostarttypename:
|
||
parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
|
||
{ $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
|
||
/* | parm_declarator_nostarttypename '(' error ')' %prec '.'
|
||
{ $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
|
||
poplevel (0, 0, 0); } */
|
||
| parm_declarator_nostarttypename array_declarator %prec '.'
|
||
{ $$ = set_array_declarator_type ($2, $1, 0); }
|
||
| '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
|
||
{ $$ = make_pointer_declarator ($2, $3); }
|
||
| '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
|
||
{ $$ = make_pointer_declarator ($2, $3); }
|
||
| '(' maybe_attribute parm_declarator_nostarttypename ')'
|
||
{ $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
|
||
;
|
||
|
||
/* A declarator allowed whether or not there has been
|
||
an explicit typespec. These cannot redeclare a typedef-name. */
|
||
|
||
notype_declarator:
|
||
notype_declarator '(' parmlist_or_identifiers %prec '.'
|
||
{ $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
|
||
/* | notype_declarator '(' error ')' %prec '.'
|
||
{ $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
|
||
poplevel (0, 0, 0); } */
|
||
| '(' maybe_attribute notype_declarator ')'
|
||
{ $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
|
||
| '*' maybe_type_quals_attrs notype_declarator %prec UNARY
|
||
{ $$ = make_pointer_declarator ($2, $3); }
|
||
| notype_declarator array_declarator %prec '.'
|
||
{ $$ = set_array_declarator_type ($2, $1, 0); }
|
||
| IDENTIFIER
|
||
;
|
||
|
||
struct_head:
|
||
STRUCT
|
||
{ $$ = NULL_TREE; }
|
||
| STRUCT attributes
|
||
{ $$ = $2; }
|
||
;
|
||
|
||
union_head:
|
||
UNION
|
||
{ $$ = NULL_TREE; }
|
||
| UNION attributes
|
||
{ $$ = $2; }
|
||
;
|
||
|
||
enum_head:
|
||
ENUM
|
||
{ $$ = NULL_TREE; }
|
||
| ENUM attributes
|
||
{ $$ = $2; }
|
||
;
|
||
|
||
/* structsp_attr: struct/union/enum specifiers that either
|
||
end with attributes, or are such that any following attributes would
|
||
be parsed as part of the struct/union/enum specifier.
|
||
|
||
structsp_nonattr: other struct/union/enum specifiers. */
|
||
|
||
structsp_attr:
|
||
struct_head identifier '{'
|
||
{ $$ = start_struct (RECORD_TYPE, $2);
|
||
/* Start scope of tag before parsing components. */
|
||
}
|
||
component_decl_list '}' maybe_attribute
|
||
{ $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
|
||
| struct_head '{' component_decl_list '}' maybe_attribute
|
||
{ $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
|
||
$3, chainon ($1, $5));
|
||
}
|
||
| union_head identifier '{'
|
||
{ $$ = start_struct (UNION_TYPE, $2); }
|
||
component_decl_list '}' maybe_attribute
|
||
{ $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
|
||
| union_head '{' component_decl_list '}' maybe_attribute
|
||
{ $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
|
||
$3, chainon ($1, $5));
|
||
}
|
||
| enum_head identifier '{'
|
||
{ $$ = start_enum ($2); }
|
||
enumlist maybecomma_warn '}' maybe_attribute
|
||
{ $$ = finish_enum ($<ttype>4, nreverse ($5),
|
||
chainon ($1, $8)); }
|
||
| enum_head '{'
|
||
{ $$ = start_enum (NULL_TREE); }
|
||
enumlist maybecomma_warn '}' maybe_attribute
|
||
{ $$ = finish_enum ($<ttype>3, nreverse ($4),
|
||
chainon ($1, $7)); }
|
||
;
|
||
|
||
structsp_nonattr:
|
||
struct_head identifier
|
||
{ $$ = xref_tag (RECORD_TYPE, $2); }
|
||
| union_head identifier
|
||
{ $$ = xref_tag (UNION_TYPE, $2); }
|
||
| enum_head identifier
|
||
{ $$ = xref_tag (ENUMERAL_TYPE, $2);
|
||
/* In ISO C, enumerated types can be referred to
|
||
only if already defined. */
|
||
if (pedantic && !COMPLETE_TYPE_P ($$))
|
||
pedwarn ("ISO C forbids forward references to `enum' types"); }
|
||
;
|
||
|
||
maybecomma:
|
||
/* empty */
|
||
| ','
|
||
;
|
||
|
||
maybecomma_warn:
|
||
/* empty */
|
||
| ','
|
||
{ if (pedantic && ! flag_isoc99)
|
||
pedwarn ("comma at end of enumerator list"); }
|
||
;
|
||
|
||
component_decl_list:
|
||
component_decl_list2
|
||
{ $$ = $1; }
|
||
| component_decl_list2 component_decl
|
||
{ $$ = chainon ($1, $2);
|
||
pedwarn ("no semicolon at end of struct or union"); }
|
||
;
|
||
|
||
component_decl_list2: /* empty */
|
||
{ $$ = NULL_TREE; }
|
||
| component_decl_list2 component_decl ';'
|
||
{ $$ = chainon ($1, $2); }
|
||
| component_decl_list2 ';'
|
||
{ if (pedantic)
|
||
pedwarn ("extra semicolon in struct or union specified"); }
|
||
ifobjc
|
||
/* foo(sizeof(struct{ @defs(ClassName)})); */
|
||
| DEFS '(' CLASSNAME ')'
|
||
{
|
||
tree interface = lookup_interface ($3);
|
||
|
||
if (interface)
|
||
$$ = get_class_ivars (interface);
|
||
else
|
||
{
|
||
error ("cannot find interface declaration for `%s'",
|
||
IDENTIFIER_POINTER ($3));
|
||
$$ = NULL_TREE;
|
||
}
|
||
}
|
||
end ifobjc
|
||
;
|
||
|
||
component_decl:
|
||
declspecs_nosc_ts setspecs components
|
||
{ $$ = $3;
|
||
POP_DECLSPEC_STACK; }
|
||
| declspecs_nosc_ts setspecs save_filename save_lineno
|
||
{
|
||
/* Support for unnamed structs or unions as members of
|
||
structs or unions (which is [a] useful and [b] supports
|
||
MS P-SDK). */
|
||
if (pedantic)
|
||
pedwarn ("ISO C doesn't support unnamed structs/unions");
|
||
|
||
$$ = grokfield($3, $4, NULL, current_declspecs, NULL_TREE);
|
||
POP_DECLSPEC_STACK; }
|
||
| declspecs_nosc_nots setspecs components_notype
|
||
{ $$ = $3;
|
||
POP_DECLSPEC_STACK; }
|
||
| declspecs_nosc_nots
|
||
{ if (pedantic)
|
||
pedwarn ("ISO C forbids member declarations with no members");
|
||
shadow_tag($1);
|
||
$$ = NULL_TREE; }
|
||
| error
|
||
{ $$ = NULL_TREE; }
|
||
| extension component_decl
|
||
{ $$ = $2;
|
||
RESTORE_WARN_FLAGS ($1); }
|
||
;
|
||
|
||
components:
|
||
component_declarator
|
||
| components ',' maybe_resetattrs component_declarator
|
||
{ $$ = chainon ($1, $4); }
|
||
;
|
||
|
||
components_notype:
|
||
component_notype_declarator
|
||
| components_notype ',' maybe_resetattrs component_notype_declarator
|
||
{ $$ = chainon ($1, $4); }
|
||
;
|
||
|
||
component_declarator:
|
||
save_filename save_lineno declarator maybe_attribute
|
||
{ $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
|
||
decl_attributes (&$$, chainon ($4, all_prefix_attributes), 0); }
|
||
| save_filename save_lineno
|
||
declarator ':' expr_no_commas maybe_attribute
|
||
{ $$ = grokfield ($1, $2, $3, current_declspecs, $5);
|
||
decl_attributes (&$$, chainon ($6, all_prefix_attributes), 0); }
|
||
| save_filename save_lineno ':' expr_no_commas maybe_attribute
|
||
{ $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
|
||
decl_attributes (&$$, chainon ($5, all_prefix_attributes), 0); }
|
||
;
|
||
|
||
component_notype_declarator:
|
||
save_filename save_lineno notype_declarator maybe_attribute
|
||
{ $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
|
||
decl_attributes (&$$, chainon ($4, all_prefix_attributes), 0); }
|
||
| save_filename save_lineno
|
||
notype_declarator ':' expr_no_commas maybe_attribute
|
||
{ $$ = grokfield ($1, $2, $3, current_declspecs, $5);
|
||
decl_attributes (&$$, chainon ($6, all_prefix_attributes), 0); }
|
||
| save_filename save_lineno ':' expr_no_commas maybe_attribute
|
||
{ $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
|
||
decl_attributes (&$$, chainon ($5, all_prefix_attributes), 0); }
|
||
;
|
||
|
||
/* We chain the enumerators in reverse order.
|
||
They are put in forward order where enumlist is used.
|
||
(The order used to be significant, but no longer is so.
|
||
However, we still maintain the order, just to be clean.) */
|
||
|
||
enumlist:
|
||
enumerator
|
||
| enumlist ',' enumerator
|
||
{ if ($1 == error_mark_node)
|
||
$$ = $1;
|
||
else
|
||
$$ = chainon ($3, $1); }
|
||
| error
|
||
{ $$ = error_mark_node; }
|
||
;
|
||
|
||
|
||
enumerator:
|
||
identifier
|
||
{ $$ = build_enumerator ($1, NULL_TREE); }
|
||
| identifier '=' expr_no_commas
|
||
{ $$ = build_enumerator ($1, $3); }
|
||
;
|
||
|
||
typename:
|
||
declspecs_nosc
|
||
{ pending_xref_error ();
|
||
$<ttype>$ = $1; }
|
||
absdcl
|
||
{ $$ = build_tree_list ($<ttype>2, $3); }
|
||
;
|
||
|
||
absdcl: /* an absolute declarator */
|
||
/* empty */
|
||
{ $$ = NULL_TREE; }
|
||
| absdcl1
|
||
;
|
||
|
||
absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
|
||
/* empty */
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
NULL_TREE),
|
||
all_prefix_attributes); }
|
||
| absdcl1
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
$1),
|
||
all_prefix_attributes); }
|
||
| absdcl1_noea attributes
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
$1),
|
||
chainon ($2, all_prefix_attributes)); }
|
||
;
|
||
|
||
absdcl1: /* a nonempty absolute declarator */
|
||
absdcl1_ea
|
||
| absdcl1_noea
|
||
;
|
||
|
||
absdcl1_noea:
|
||
direct_absdcl1
|
||
| '*' maybe_type_quals_attrs absdcl1_noea
|
||
{ $$ = make_pointer_declarator ($2, $3); }
|
||
;
|
||
|
||
absdcl1_ea:
|
||
'*' maybe_type_quals_attrs
|
||
{ $$ = make_pointer_declarator ($2, NULL_TREE); }
|
||
| '*' maybe_type_quals_attrs absdcl1_ea
|
||
{ $$ = make_pointer_declarator ($2, $3); }
|
||
;
|
||
|
||
direct_absdcl1:
|
||
'(' maybe_attribute absdcl1 ')'
|
||
{ $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
|
||
| direct_absdcl1 '(' parmlist
|
||
{ $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
|
||
| direct_absdcl1 array_declarator
|
||
{ $$ = set_array_declarator_type ($2, $1, 1); }
|
||
| '(' parmlist
|
||
{ $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
|
||
| array_declarator
|
||
{ $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
|
||
;
|
||
|
||
/* The [...] part of a declarator for an array type. */
|
||
|
||
array_declarator:
|
||
'[' expr ']'
|
||
{ $$ = build_array_declarator ($2, NULL_TREE, 0, 0); }
|
||
| '[' declspecs_nosc expr ']'
|
||
{ $$ = build_array_declarator ($3, $2, 0, 0); }
|
||
| '[' ']'
|
||
{ $$ = build_array_declarator (NULL_TREE, NULL_TREE, 0, 0); }
|
||
| '[' declspecs_nosc ']'
|
||
{ $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
|
||
| '[' '*' ']'
|
||
{ $$ = build_array_declarator (NULL_TREE, NULL_TREE, 0, 1); }
|
||
| '[' declspecs_nosc '*' ']'
|
||
{ $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
|
||
| '[' SCSPEC expr ']'
|
||
{ if (C_RID_CODE ($2) != RID_STATIC)
|
||
error ("storage class specifier in array declarator");
|
||
$$ = build_array_declarator ($3, NULL_TREE, 1, 0); }
|
||
| '[' SCSPEC declspecs_nosc expr ']'
|
||
{ if (C_RID_CODE ($2) != RID_STATIC)
|
||
error ("storage class specifier in array declarator");
|
||
$$ = build_array_declarator ($4, $3, 1, 0); }
|
||
| '[' declspecs_nosc SCSPEC expr ']'
|
||
{ if (C_RID_CODE ($3) != RID_STATIC)
|
||
error ("storage class specifier in array declarator");
|
||
$$ = build_array_declarator ($4, $2, 1, 0); }
|
||
;
|
||
|
||
/* A nonempty series of declarations and statements (possibly followed by
|
||
some labels) that can form the body of a compound statement.
|
||
NOTE: we don't allow labels on declarations; this might seem like a
|
||
natural extension, but there would be a conflict between attributes
|
||
on the label and prefix attributes on the declaration. */
|
||
|
||
stmts_and_decls:
|
||
lineno_stmt_decl_or_labels_ending_stmt
|
||
| lineno_stmt_decl_or_labels_ending_decl
|
||
| lineno_stmt_decl_or_labels_ending_label
|
||
{
|
||
pedwarn ("deprecated use of label at end of compound statement");
|
||
}
|
||
| lineno_stmt_decl_or_labels_ending_error
|
||
;
|
||
|
||
lineno_stmt_decl_or_labels_ending_stmt:
|
||
lineno_stmt
|
||
| lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
|
||
| lineno_stmt_decl_or_labels_ending_decl lineno_stmt
|
||
| lineno_stmt_decl_or_labels_ending_label lineno_stmt
|
||
| lineno_stmt_decl_or_labels_ending_error lineno_stmt
|
||
;
|
||
|
||
lineno_stmt_decl_or_labels_ending_decl:
|
||
lineno_decl
|
||
| lineno_stmt_decl_or_labels_ending_stmt lineno_decl
|
||
{ if (pedantic && !flag_isoc99)
|
||
pedwarn ("ISO C89 forbids mixed declarations and code"); }
|
||
| lineno_stmt_decl_or_labels_ending_decl lineno_decl
|
||
| lineno_stmt_decl_or_labels_ending_error lineno_decl
|
||
;
|
||
|
||
lineno_stmt_decl_or_labels_ending_label:
|
||
lineno_label
|
||
| lineno_stmt_decl_or_labels_ending_stmt lineno_label
|
||
| lineno_stmt_decl_or_labels_ending_decl lineno_label
|
||
| lineno_stmt_decl_or_labels_ending_label lineno_label
|
||
| lineno_stmt_decl_or_labels_ending_error lineno_label
|
||
;
|
||
|
||
lineno_stmt_decl_or_labels_ending_error:
|
||
errstmt
|
||
| lineno_stmt_decl_or_labels errstmt
|
||
;
|
||
|
||
lineno_stmt_decl_or_labels:
|
||
lineno_stmt_decl_or_labels_ending_stmt
|
||
| lineno_stmt_decl_or_labels_ending_decl
|
||
| lineno_stmt_decl_or_labels_ending_label
|
||
| lineno_stmt_decl_or_labels_ending_error
|
||
;
|
||
|
||
errstmt: error ';'
|
||
;
|
||
|
||
pushlevel: /* empty */
|
||
{ pushlevel (0);
|
||
clear_last_expr ();
|
||
add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
|
||
ifobjc
|
||
if (objc_method_context)
|
||
add_objc_decls ();
|
||
end ifobjc
|
||
}
|
||
;
|
||
|
||
poplevel: /* empty */
|
||
{ $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0); }
|
||
;
|
||
|
||
/* Start and end blocks created for the new scopes of C99. */
|
||
c99_block_start: /* empty */
|
||
{ if (flag_isoc99)
|
||
{
|
||
$$ = c_begin_compound_stmt ();
|
||
pushlevel (0);
|
||
clear_last_expr ();
|
||
add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
|
||
ifobjc
|
||
if (objc_method_context)
|
||
add_objc_decls ();
|
||
end ifobjc
|
||
}
|
||
else
|
||
$$ = NULL_TREE;
|
||
}
|
||
;
|
||
|
||
/* Productions using c99_block_start and c99_block_end will need to do what's
|
||
in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
|
||
$1 is the value of c99_block_start and $2 of c99_block_end. */
|
||
c99_block_end: /* empty */
|
||
{ if (flag_isoc99)
|
||
{
|
||
tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
|
||
$$ = poplevel (kept_level_p (), 0, 0);
|
||
SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
|
||
= SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
|
||
= $$;
|
||
}
|
||
else
|
||
$$ = NULL_TREE; }
|
||
;
|
||
|
||
/* Read zero or more forward-declarations for labels
|
||
that nested functions can jump to. */
|
||
maybe_label_decls:
|
||
/* empty */
|
||
| label_decls
|
||
{ if (pedantic)
|
||
pedwarn ("ISO C forbids label declarations"); }
|
||
;
|
||
|
||
label_decls:
|
||
label_decl
|
||
| label_decls label_decl
|
||
;
|
||
|
||
label_decl:
|
||
LABEL identifiers_or_typenames ';'
|
||
{ tree link;
|
||
for (link = $2; link; link = TREE_CHAIN (link))
|
||
{
|
||
tree label = shadow_label (TREE_VALUE (link));
|
||
C_DECLARED_LABEL_FLAG (label) = 1;
|
||
add_decl_stmt (label);
|
||
}
|
||
}
|
||
;
|
||
|
||
/* This is the body of a function definition.
|
||
It causes syntax errors to ignore to the next openbrace. */
|
||
compstmt_or_error:
|
||
compstmt
|
||
{}
|
||
| error compstmt
|
||
;
|
||
|
||
compstmt_start: '{' { compstmt_count++;
|
||
$$ = c_begin_compound_stmt (); }
|
||
;
|
||
|
||
compstmt_nostart: '}'
|
||
{ $$ = convert (void_type_node, integer_zero_node); }
|
||
| pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
|
||
{ $$ = poplevel (kept_level_p (), 1, 0);
|
||
SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
|
||
= SCOPE_STMT_BLOCK (TREE_VALUE ($5))
|
||
= $$; }
|
||
;
|
||
|
||
compstmt_contents_nonempty:
|
||
stmts_and_decls
|
||
| error
|
||
;
|
||
|
||
compstmt_primary_start:
|
||
'(' '{'
|
||
{ if (current_function_decl == 0)
|
||
{
|
||
error ("braced-group within expression allowed only inside a function");
|
||
YYERROR;
|
||
}
|
||
/* We must force a BLOCK for this level
|
||
so that, if it is not expanded later,
|
||
there is a way to turn off the entire subtree of blocks
|
||
that are contained in it. */
|
||
keep_next_level ();
|
||
push_label_level ();
|
||
compstmt_count++;
|
||
$$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
|
||
}
|
||
;
|
||
|
||
compstmt: compstmt_start compstmt_nostart
|
||
{ RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
|
||
last_expr_type = NULL_TREE;
|
||
$$ = $1; }
|
||
;
|
||
|
||
/* Value is number of statements counted as of the closeparen. */
|
||
simple_if:
|
||
if_prefix c99_block_lineno_labeled_stmt
|
||
{ c_finish_then (); }
|
||
/* Make sure c_expand_end_cond is run once
|
||
for each call to c_expand_start_cond.
|
||
Otherwise a crash is likely. */
|
||
| if_prefix error
|
||
;
|
||
|
||
if_prefix:
|
||
/* We must build the IF_STMT node before parsing its
|
||
condition so that STMT_LINENO refers to the line
|
||
containing the "if", and not the line containing
|
||
the close-parenthesis.
|
||
|
||
c_begin_if_stmt returns the IF_STMT node, which
|
||
we later pass to c_expand_start_cond to fill
|
||
in the condition and other tidbits. */
|
||
IF
|
||
{ $<ttype>$ = c_begin_if_stmt (); }
|
||
'(' expr ')'
|
||
{ c_expand_start_cond (truthvalue_conversion ($4),
|
||
compstmt_count,$<ttype>2);
|
||
$<itype>$ = stmt_count;
|
||
if_stmt_file = $<filename>-2;
|
||
if_stmt_line = $<lineno>-1; }
|
||
;
|
||
|
||
/* This is a subroutine of stmt.
|
||
It is used twice, once for valid DO statements
|
||
and once for catching errors in parsing the end test. */
|
||
do_stmt_start:
|
||
DO
|
||
{ stmt_count++;
|
||
compstmt_count++;
|
||
$<ttype>$
|
||
= add_stmt (build_stmt (DO_STMT, NULL_TREE,
|
||
NULL_TREE));
|
||
/* In the event that a parse error prevents
|
||
parsing the complete do-statement, set the
|
||
condition now. Otherwise, we can get crashes at
|
||
RTL-generation time. */
|
||
DO_COND ($<ttype>$) = error_mark_node; }
|
||
c99_block_lineno_labeled_stmt WHILE
|
||
{ $$ = $<ttype>2;
|
||
RECHAIN_STMTS ($$, DO_BODY ($$)); }
|
||
;
|
||
|
||
/* The forced readahead in here is because we might be at the end of a
|
||
line, and the line and file won't be bumped until yylex absorbs the
|
||
first token on the next line. */
|
||
save_filename:
|
||
{ if (yychar == YYEMPTY)
|
||
yychar = YYLEX;
|
||
$$ = input_filename; }
|
||
;
|
||
|
||
save_lineno:
|
||
{ if (yychar == YYEMPTY)
|
||
yychar = YYLEX;
|
||
$$ = lineno; }
|
||
;
|
||
|
||
lineno_labeled_stmt:
|
||
lineno_stmt
|
||
| lineno_label lineno_labeled_stmt
|
||
;
|
||
|
||
/* Like lineno_labeled_stmt, but a block in C99. */
|
||
c99_block_lineno_labeled_stmt:
|
||
c99_block_start lineno_labeled_stmt c99_block_end
|
||
{ if (flag_isoc99)
|
||
RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
|
||
;
|
||
|
||
lineno_stmt:
|
||
save_filename save_lineno stmt
|
||
{ if ($3)
|
||
{
|
||
STMT_LINENO ($3) = $2;
|
||
/* ??? We currently have no way of recording
|
||
the filename for a statement. This probably
|
||
matters little in practice at the moment,
|
||
but I suspect that problems will occur when
|
||
doing inlining at the tree level. */
|
||
}
|
||
}
|
||
;
|
||
|
||
lineno_label:
|
||
save_filename save_lineno label
|
||
{ if ($3)
|
||
{
|
||
STMT_LINENO ($3) = $2;
|
||
}
|
||
}
|
||
;
|
||
|
||
select_or_iter_stmt:
|
||
simple_if ELSE
|
||
{ c_expand_start_else ();
|
||
$<itype>1 = stmt_count; }
|
||
c99_block_lineno_labeled_stmt
|
||
{ c_finish_else ();
|
||
c_expand_end_cond ();
|
||
if (extra_warnings && stmt_count == $<itype>1)
|
||
warning ("empty body in an else-statement"); }
|
||
| simple_if %prec IF
|
||
{ c_expand_end_cond ();
|
||
/* This warning is here instead of in simple_if, because we
|
||
do not want a warning if an empty if is followed by an
|
||
else statement. Increment stmt_count so we don't
|
||
give a second error if this is a nested `if'. */
|
||
if (extra_warnings && stmt_count++ == $<itype>1)
|
||
warning_with_file_and_line (if_stmt_file, if_stmt_line,
|
||
"empty body in an if-statement"); }
|
||
/* Make sure c_expand_end_cond is run once
|
||
for each call to c_expand_start_cond.
|
||
Otherwise a crash is likely. */
|
||
| simple_if ELSE error
|
||
{ c_expand_end_cond (); }
|
||
/* We must build the WHILE_STMT node before parsing its
|
||
condition so that STMT_LINENO refers to the line
|
||
containing the "while", and not the line containing
|
||
the close-parenthesis.
|
||
|
||
c_begin_while_stmt returns the WHILE_STMT node, which
|
||
we later pass to c_finish_while_stmt_cond to fill
|
||
in the condition and other tidbits. */
|
||
| WHILE
|
||
{ stmt_count++;
|
||
$<ttype>$ = c_begin_while_stmt (); }
|
||
'(' expr ')'
|
||
{ $4 = truthvalue_conversion ($4);
|
||
c_finish_while_stmt_cond (truthvalue_conversion ($4),
|
||
$<ttype>2);
|
||
$<ttype>$ = add_stmt ($<ttype>2); }
|
||
c99_block_lineno_labeled_stmt
|
||
{ RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
|
||
| do_stmt_start
|
||
'(' expr ')' ';'
|
||
{ DO_COND ($1) = truthvalue_conversion ($3); }
|
||
| do_stmt_start error
|
||
{ }
|
||
| FOR
|
||
{ $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
|
||
NULL_TREE, NULL_TREE);
|
||
add_stmt ($<ttype>$); }
|
||
'(' for_init_stmt
|
||
{ stmt_count++;
|
||
RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
|
||
xexpr ';'
|
||
{ if ($6)
|
||
FOR_COND ($<ttype>2) = truthvalue_conversion ($6); }
|
||
xexpr ')'
|
||
{ FOR_EXPR ($<ttype>2) = $9; }
|
||
c99_block_lineno_labeled_stmt
|
||
{ RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2)); }
|
||
| SWITCH '(' expr ')'
|
||
{ stmt_count++;
|
||
$<ttype>$ = c_start_case ($3); }
|
||
c99_block_lineno_labeled_stmt
|
||
{ c_finish_case (); }
|
||
;
|
||
|
||
for_init_stmt:
|
||
xexpr ';'
|
||
{ add_stmt (build_stmt (EXPR_STMT, $1)); }
|
||
| decl
|
||
{ check_for_loop_decls (); }
|
||
;
|
||
|
||
/* Parse a single real statement, not including any labels. */
|
||
stmt:
|
||
compstmt
|
||
{ stmt_count++; $$ = $1; }
|
||
| expr ';'
|
||
{ stmt_count++;
|
||
$$ = c_expand_expr_stmt ($1); }
|
||
| c99_block_start select_or_iter_stmt c99_block_end
|
||
{ if (flag_isoc99)
|
||
RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
|
||
$$ = NULL_TREE; }
|
||
| BREAK ';'
|
||
{ stmt_count++;
|
||
$$ = add_stmt (build_break_stmt ()); }
|
||
| CONTINUE ';'
|
||
{ stmt_count++;
|
||
$$ = add_stmt (build_continue_stmt ()); }
|
||
| RETURN ';'
|
||
{ stmt_count++;
|
||
$$ = c_expand_return (NULL_TREE); }
|
||
| RETURN expr ';'
|
||
{ stmt_count++;
|
||
$$ = c_expand_return ($2); }
|
||
| ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
|
||
{ stmt_count++;
|
||
$$ = simple_asm_stmt ($4); }
|
||
/* This is the case with just output operands. */
|
||
| ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
|
||
{ stmt_count++;
|
||
$$ = build_asm_stmt ($2, $4, $6, NULL_TREE, NULL_TREE); }
|
||
/* This is the case with input operands as well. */
|
||
| ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
|
||
asm_operands ')' ';'
|
||
{ stmt_count++;
|
||
$$ = build_asm_stmt ($2, $4, $6, $8, NULL_TREE); }
|
||
/* This is the case with clobbered registers as well. */
|
||
| ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
|
||
asm_operands ':' asm_clobbers ')' ';'
|
||
{ stmt_count++;
|
||
$$ = build_asm_stmt ($2, $4, $6, $8, $10); }
|
||
| GOTO identifier ';'
|
||
{ tree decl;
|
||
stmt_count++;
|
||
decl = lookup_label ($2);
|
||
if (decl != 0)
|
||
{
|
||
TREE_USED (decl) = 1;
|
||
$$ = add_stmt (build_stmt (GOTO_STMT, decl));
|
||
}
|
||
else
|
||
$$ = NULL_TREE;
|
||
}
|
||
| GOTO '*' expr ';'
|
||
{ if (pedantic)
|
||
pedwarn ("ISO C forbids `goto *expr;'");
|
||
stmt_count++;
|
||
$3 = convert (ptr_type_node, $3);
|
||
$$ = add_stmt (build_stmt (GOTO_STMT, $3)); }
|
||
| ';'
|
||
{ $$ = NULL_TREE; }
|
||
;
|
||
|
||
/* Any kind of label, including jump labels and case labels.
|
||
ANSI C accepts labels only before statements, but we allow them
|
||
also at the end of a compound statement. */
|
||
|
||
label: CASE expr_no_commas ':'
|
||
{ stmt_count++;
|
||
$$ = do_case ($2, NULL_TREE); }
|
||
| CASE expr_no_commas ELLIPSIS expr_no_commas ':'
|
||
{ stmt_count++;
|
||
$$ = do_case ($2, $4); }
|
||
| DEFAULT ':'
|
||
{ stmt_count++;
|
||
$$ = do_case (NULL_TREE, NULL_TREE); }
|
||
| identifier save_filename save_lineno ':' maybe_attribute
|
||
{ tree label = define_label ($2, $3, $1);
|
||
stmt_count++;
|
||
if (label)
|
||
{
|
||
decl_attributes (&label, $5, 0);
|
||
$$ = add_stmt (build_stmt (LABEL_STMT, label));
|
||
}
|
||
else
|
||
$$ = NULL_TREE;
|
||
}
|
||
;
|
||
|
||
/* Either a type-qualifier or nothing. First thing in an `asm' statement. */
|
||
|
||
maybe_type_qual:
|
||
/* empty */
|
||
{ emit_line_note (input_filename, lineno);
|
||
$$ = NULL_TREE; }
|
||
| TYPE_QUAL
|
||
{ emit_line_note (input_filename, lineno); }
|
||
;
|
||
|
||
xexpr:
|
||
/* empty */
|
||
{ $$ = NULL_TREE; }
|
||
| expr
|
||
;
|
||
|
||
/* These are the operands other than the first string and colon
|
||
in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
|
||
asm_operands: /* empty */
|
||
{ $$ = NULL_TREE; }
|
||
| nonnull_asm_operands
|
||
;
|
||
|
||
nonnull_asm_operands:
|
||
asm_operand
|
||
| nonnull_asm_operands ',' asm_operand
|
||
{ $$ = chainon ($1, $3); }
|
||
;
|
||
|
||
asm_operand:
|
||
STRING '(' expr ')'
|
||
{ $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $3); }
|
||
| '[' identifier ']' STRING '(' expr ')'
|
||
{ $$ = build_tree_list (build_tree_list ($2, $4), $6); }
|
||
;
|
||
|
||
asm_clobbers:
|
||
string
|
||
{ $$ = tree_cons (NULL_TREE, combine_strings ($1), NULL_TREE); }
|
||
| asm_clobbers ',' string
|
||
{ $$ = tree_cons (NULL_TREE, combine_strings ($3), $1); }
|
||
;
|
||
|
||
/* This is what appears inside the parens in a function declarator.
|
||
Its value is a list of ..._TYPE nodes. Attributes must appear here
|
||
to avoid a conflict with their appearance after an open parenthesis
|
||
in an abstract declarator, as in
|
||
"void bar (int (__attribute__((__mode__(SI))) int foo));". */
|
||
parmlist:
|
||
maybe_attribute
|
||
{ pushlevel (0);
|
||
clear_parm_order ();
|
||
declare_parm_level (0); }
|
||
parmlist_1
|
||
{ $$ = $3;
|
||
parmlist_tags_warning ();
|
||
poplevel (0, 0, 0); }
|
||
;
|
||
|
||
parmlist_1:
|
||
parmlist_2 ')'
|
||
| parms ';'
|
||
{ tree parm;
|
||
if (pedantic)
|
||
pedwarn ("ISO C forbids forward parameter declarations");
|
||
/* Mark the forward decls as such. */
|
||
for (parm = getdecls (); parm; parm = TREE_CHAIN (parm))
|
||
TREE_ASM_WRITTEN (parm) = 1;
|
||
clear_parm_order (); }
|
||
maybe_attribute
|
||
{ /* Dummy action so attributes are in known place
|
||
on parser stack. */ }
|
||
parmlist_1
|
||
{ $$ = $6; }
|
||
| error ')'
|
||
{ $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
|
||
;
|
||
|
||
/* This is what appears inside the parens in a function declarator.
|
||
Is value is represented in the format that grokdeclarator expects. */
|
||
parmlist_2: /* empty */
|
||
{ $$ = get_parm_info (0); }
|
||
| ELLIPSIS
|
||
{ $$ = get_parm_info (0);
|
||
/* Gcc used to allow this as an extension. However, it does
|
||
not work for all targets, and thus has been disabled.
|
||
Also, since func (...) and func () are indistinguishable,
|
||
it caused problems with the code in expand_builtin which
|
||
tries to verify that BUILT_IN_NEXT_ARG is being used
|
||
correctly. */
|
||
error ("ISO C requires a named argument before `...'");
|
||
}
|
||
| parms
|
||
{ $$ = get_parm_info (1); }
|
||
| parms ',' ELLIPSIS
|
||
{ $$ = get_parm_info (0); }
|
||
;
|
||
|
||
parms:
|
||
firstparm
|
||
{ push_parm_decl ($1); }
|
||
| parms ',' parm
|
||
{ push_parm_decl ($3); }
|
||
;
|
||
|
||
/* A single parameter declaration or parameter type name,
|
||
as found in a parmlist. */
|
||
parm:
|
||
declspecs_ts setspecs parm_declarator maybe_attribute
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
$3),
|
||
chainon ($4, all_prefix_attributes));
|
||
POP_DECLSPEC_STACK; }
|
||
| declspecs_ts setspecs notype_declarator maybe_attribute
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
$3),
|
||
chainon ($4, all_prefix_attributes));
|
||
POP_DECLSPEC_STACK; }
|
||
| declspecs_ts setspecs absdcl_maybe_attribute
|
||
{ $$ = $3;
|
||
POP_DECLSPEC_STACK; }
|
||
| declspecs_nots setspecs notype_declarator maybe_attribute
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
$3),
|
||
chainon ($4, all_prefix_attributes));
|
||
POP_DECLSPEC_STACK; }
|
||
|
||
| declspecs_nots setspecs absdcl_maybe_attribute
|
||
{ $$ = $3;
|
||
POP_DECLSPEC_STACK; }
|
||
;
|
||
|
||
/* The first parm, which must suck attributes from off the top of the parser
|
||
stack. */
|
||
firstparm:
|
||
declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
$3),
|
||
chainon ($4, all_prefix_attributes));
|
||
POP_DECLSPEC_STACK; }
|
||
| declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
$3),
|
||
chainon ($4, all_prefix_attributes));
|
||
POP_DECLSPEC_STACK; }
|
||
| declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
|
||
{ $$ = $3;
|
||
POP_DECLSPEC_STACK; }
|
||
| declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
$3),
|
||
chainon ($4, all_prefix_attributes));
|
||
POP_DECLSPEC_STACK; }
|
||
|
||
| declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
|
||
{ $$ = $3;
|
||
POP_DECLSPEC_STACK; }
|
||
;
|
||
|
||
setspecs_fp:
|
||
setspecs
|
||
{ prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
|
||
all_prefix_attributes = prefix_attributes; }
|
||
;
|
||
|
||
/* This is used in a function definition
|
||
where either a parmlist or an identifier list is ok.
|
||
Its value is a list of ..._TYPE nodes or a list of identifiers. */
|
||
parmlist_or_identifiers:
|
||
maybe_attribute
|
||
{ pushlevel (0);
|
||
clear_parm_order ();
|
||
declare_parm_level (1); }
|
||
parmlist_or_identifiers_1
|
||
{ $$ = $3;
|
||
parmlist_tags_warning ();
|
||
poplevel (0, 0, 0); }
|
||
;
|
||
|
||
parmlist_or_identifiers_1:
|
||
parmlist_1
|
||
| identifiers ')'
|
||
{ tree t;
|
||
for (t = $1; t; t = TREE_CHAIN (t))
|
||
if (TREE_VALUE (t) == NULL_TREE)
|
||
error ("`...' in old-style identifier list");
|
||
$$ = tree_cons (NULL_TREE, NULL_TREE, $1);
|
||
|
||
/* Make sure we have a parmlist after attributes. */
|
||
if ($<ttype>-1 != 0
|
||
&& (TREE_CODE ($$) != TREE_LIST
|
||
|| TREE_PURPOSE ($$) == 0
|
||
|| TREE_CODE (TREE_PURPOSE ($$)) != PARM_DECL))
|
||
YYERROR1;
|
||
}
|
||
;
|
||
|
||
/* A nonempty list of identifiers. */
|
||
identifiers:
|
||
IDENTIFIER
|
||
{ $$ = build_tree_list (NULL_TREE, $1); }
|
||
| identifiers ',' IDENTIFIER
|
||
{ $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
|
||
;
|
||
|
||
/* A nonempty list of identifiers, including typenames. */
|
||
identifiers_or_typenames:
|
||
identifier
|
||
{ $$ = build_tree_list (NULL_TREE, $1); }
|
||
| identifiers_or_typenames ',' identifier
|
||
{ $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
|
||
;
|
||
|
||
extension:
|
||
EXTENSION
|
||
{ $$ = SAVE_WARN_FLAGS();
|
||
pedantic = 0;
|
||
warn_pointer_arith = 0;
|
||
warn_traditional = 0; }
|
||
;
|
||
|
||
ifobjc
|
||
/* Objective-C productions. */
|
||
|
||
objcdef:
|
||
classdef
|
||
| classdecl
|
||
| aliasdecl
|
||
| protocoldef
|
||
| methoddef
|
||
| END
|
||
{
|
||
if (objc_implementation_context)
|
||
{
|
||
finish_class (objc_implementation_context);
|
||
objc_ivar_chain = NULL_TREE;
|
||
objc_implementation_context = NULL_TREE;
|
||
}
|
||
else
|
||
warning ("`@end' must appear in an implementation context");
|
||
}
|
||
;
|
||
|
||
/* A nonempty list of identifiers. */
|
||
identifier_list:
|
||
identifier
|
||
{ $$ = build_tree_list (NULL_TREE, $1); }
|
||
| identifier_list ',' identifier
|
||
{ $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
|
||
;
|
||
|
||
classdecl:
|
||
CLASS identifier_list ';'
|
||
{
|
||
objc_declare_class ($2);
|
||
}
|
||
|
||
aliasdecl:
|
||
ALIAS identifier identifier ';'
|
||
{
|
||
objc_declare_alias ($2, $3);
|
||
}
|
||
|
||
classdef:
|
||
INTERFACE identifier protocolrefs '{'
|
||
{
|
||
objc_interface_context = objc_ivar_context
|
||
= start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
|
||
objc_public_flag = 0;
|
||
}
|
||
ivar_decl_list '}'
|
||
{
|
||
continue_class (objc_interface_context);
|
||
}
|
||
methodprotolist
|
||
END
|
||
{
|
||
finish_class (objc_interface_context);
|
||
objc_interface_context = NULL_TREE;
|
||
}
|
||
|
||
| INTERFACE identifier protocolrefs
|
||
{
|
||
objc_interface_context
|
||
= start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
|
||
continue_class (objc_interface_context);
|
||
}
|
||
methodprotolist
|
||
END
|
||
{
|
||
finish_class (objc_interface_context);
|
||
objc_interface_context = NULL_TREE;
|
||
}
|
||
|
||
| INTERFACE identifier ':' identifier protocolrefs '{'
|
||
{
|
||
objc_interface_context = objc_ivar_context
|
||
= start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
|
||
objc_public_flag = 0;
|
||
}
|
||
ivar_decl_list '}'
|
||
{
|
||
continue_class (objc_interface_context);
|
||
}
|
||
methodprotolist
|
||
END
|
||
{
|
||
finish_class (objc_interface_context);
|
||
objc_interface_context = NULL_TREE;
|
||
}
|
||
|
||
| INTERFACE identifier ':' identifier protocolrefs
|
||
{
|
||
objc_interface_context
|
||
= start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
|
||
continue_class (objc_interface_context);
|
||
}
|
||
methodprotolist
|
||
END
|
||
{
|
||
finish_class (objc_interface_context);
|
||
objc_interface_context = NULL_TREE;
|
||
}
|
||
|
||
| IMPLEMENTATION identifier '{'
|
||
{
|
||
objc_implementation_context = objc_ivar_context
|
||
= start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
|
||
objc_public_flag = 0;
|
||
}
|
||
ivar_decl_list '}'
|
||
{
|
||
objc_ivar_chain
|
||
= continue_class (objc_implementation_context);
|
||
}
|
||
|
||
| IMPLEMENTATION identifier
|
||
{
|
||
objc_implementation_context
|
||
= start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
|
||
objc_ivar_chain
|
||
= continue_class (objc_implementation_context);
|
||
}
|
||
|
||
| IMPLEMENTATION identifier ':' identifier '{'
|
||
{
|
||
objc_implementation_context = objc_ivar_context
|
||
= start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
|
||
objc_public_flag = 0;
|
||
}
|
||
ivar_decl_list '}'
|
||
{
|
||
objc_ivar_chain
|
||
= continue_class (objc_implementation_context);
|
||
}
|
||
|
||
| IMPLEMENTATION identifier ':' identifier
|
||
{
|
||
objc_implementation_context
|
||
= start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
|
||
objc_ivar_chain
|
||
= continue_class (objc_implementation_context);
|
||
}
|
||
|
||
| INTERFACE identifier '(' identifier ')' protocolrefs
|
||
{
|
||
objc_interface_context
|
||
= start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
|
||
continue_class (objc_interface_context);
|
||
}
|
||
methodprotolist
|
||
END
|
||
{
|
||
finish_class (objc_interface_context);
|
||
objc_interface_context = NULL_TREE;
|
||
}
|
||
|
||
| IMPLEMENTATION identifier '(' identifier ')'
|
||
{
|
||
objc_implementation_context
|
||
= start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
|
||
objc_ivar_chain
|
||
= continue_class (objc_implementation_context);
|
||
}
|
||
;
|
||
|
||
protocoldef:
|
||
PROTOCOL identifier protocolrefs
|
||
{
|
||
objc_pq_context = 1;
|
||
objc_interface_context
|
||
= start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
|
||
}
|
||
methodprotolist END
|
||
{
|
||
objc_pq_context = 0;
|
||
finish_protocol(objc_interface_context);
|
||
objc_interface_context = NULL_TREE;
|
||
}
|
||
/* The @protocol forward-declaration production introduces a
|
||
reduce/reduce conflict on ';', which should be resolved in
|
||
favor of the production 'identifier_list -> identifier'. */
|
||
| PROTOCOL identifier_list ';'
|
||
{
|
||
objc_declare_protocols ($2);
|
||
}
|
||
;
|
||
|
||
protocolrefs:
|
||
/* empty */
|
||
{
|
||
$$ = NULL_TREE;
|
||
}
|
||
| non_empty_protocolrefs
|
||
;
|
||
|
||
non_empty_protocolrefs:
|
||
ARITHCOMPARE identifier_list ARITHCOMPARE
|
||
{
|
||
if ($1 == LT_EXPR && $3 == GT_EXPR)
|
||
$$ = $2;
|
||
else
|
||
YYERROR1;
|
||
}
|
||
;
|
||
|
||
ivar_decl_list:
|
||
ivar_decl_list visibility_spec ivar_decls
|
||
| ivar_decls
|
||
;
|
||
|
||
visibility_spec:
|
||
PRIVATE { objc_public_flag = 2; }
|
||
| PROTECTED { objc_public_flag = 0; }
|
||
| PUBLIC { objc_public_flag = 1; }
|
||
;
|
||
|
||
ivar_decls:
|
||
/* empty */
|
||
{
|
||
$$ = NULL_TREE;
|
||
}
|
||
| ivar_decls ivar_decl ';'
|
||
| ivar_decls ';'
|
||
{
|
||
if (pedantic)
|
||
pedwarn ("extra semicolon in struct or union specified");
|
||
}
|
||
;
|
||
|
||
|
||
/* There is a shift-reduce conflict here, because `components' may
|
||
start with a `typename'. It happens that shifting (the default resolution)
|
||
does the right thing, because it treats the `typename' as part of
|
||
a `typed_typespecs'.
|
||
|
||
It is possible that this same technique would allow the distinction
|
||
between `notype_initdecls' and `initdecls' to be eliminated.
|
||
But I am being cautious and not trying it. */
|
||
|
||
ivar_decl:
|
||
declspecs_nosc_ts setspecs ivars
|
||
{ $$ = $3;
|
||
POP_DECLSPEC_STACK; }
|
||
| declspecs_nosc_nots setspecs ivars
|
||
{ $$ = $3;
|
||
POP_DECLSPEC_STACK; }
|
||
| error
|
||
{ $$ = NULL_TREE; }
|
||
;
|
||
|
||
ivars:
|
||
/* empty */
|
||
{ $$ = NULL_TREE; }
|
||
| ivar_declarator
|
||
| ivars ',' maybe_resetattrs ivar_declarator
|
||
;
|
||
|
||
ivar_declarator:
|
||
declarator
|
||
{
|
||
$$ = add_instance_variable (objc_ivar_context,
|
||
objc_public_flag,
|
||
$1, current_declspecs,
|
||
NULL_TREE);
|
||
}
|
||
| declarator ':' expr_no_commas
|
||
{
|
||
$$ = add_instance_variable (objc_ivar_context,
|
||
objc_public_flag,
|
||
$1, current_declspecs, $3);
|
||
}
|
||
| ':' expr_no_commas
|
||
{
|
||
$$ = add_instance_variable (objc_ivar_context,
|
||
objc_public_flag,
|
||
NULL_TREE,
|
||
current_declspecs, $2);
|
||
}
|
||
;
|
||
|
||
methodtype:
|
||
'+'
|
||
{ objc_inherit_code = CLASS_METHOD_DECL; }
|
||
| '-'
|
||
{ objc_inherit_code = INSTANCE_METHOD_DECL; }
|
||
;
|
||
|
||
methoddef:
|
||
methodtype
|
||
{
|
||
objc_pq_context = 1;
|
||
if (!objc_implementation_context)
|
||
fatal_error ("method definition not in class context");
|
||
}
|
||
methoddecl
|
||
{
|
||
objc_pq_context = 0;
|
||
if (objc_inherit_code == CLASS_METHOD_DECL)
|
||
add_class_method (objc_implementation_context, $3);
|
||
else
|
||
add_instance_method (objc_implementation_context, $3);
|
||
start_method_def ($3);
|
||
}
|
||
optarglist
|
||
{
|
||
continue_method_def ();
|
||
}
|
||
compstmt_or_error
|
||
{
|
||
finish_method_def ();
|
||
}
|
||
;
|
||
|
||
/* the reason for the strange actions in this rule
|
||
is so that notype_initdecls when reached via datadef
|
||
can find a valid list of type and sc specs in $0. */
|
||
|
||
methodprotolist:
|
||
/* empty */
|
||
| {$<ttype>$ = NULL_TREE; } methodprotolist2
|
||
;
|
||
|
||
methodprotolist2: /* eliminates a shift/reduce conflict */
|
||
methodproto
|
||
| datadef
|
||
| methodprotolist2 methodproto
|
||
| methodprotolist2 {$<ttype>$ = NULL_TREE; } datadef
|
||
;
|
||
|
||
semi_or_error:
|
||
';'
|
||
| error
|
||
;
|
||
|
||
methodproto:
|
||
methodtype
|
||
{
|
||
/* Remember protocol qualifiers in prototypes. */
|
||
objc_pq_context = 1;
|
||
}
|
||
methoddecl
|
||
{
|
||
/* Forget protocol qualifiers here. */
|
||
objc_pq_context = 0;
|
||
if (objc_inherit_code == CLASS_METHOD_DECL)
|
||
add_class_method (objc_interface_context, $3);
|
||
else
|
||
add_instance_method (objc_interface_context, $3);
|
||
}
|
||
semi_or_error
|
||
;
|
||
|
||
methoddecl:
|
||
'(' typename ')' unaryselector
|
||
{
|
||
$$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
|
||
}
|
||
|
||
| unaryselector
|
||
{
|
||
$$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
|
||
}
|
||
|
||
| '(' typename ')' keywordselector optparmlist
|
||
{
|
||
$$ = build_method_decl (objc_inherit_code, $2, $4, $5);
|
||
}
|
||
|
||
| keywordselector optparmlist
|
||
{
|
||
$$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
|
||
}
|
||
;
|
||
|
||
/* "optarglist" assumes that start_method_def has already been called...
|
||
if it is not, the "xdecls" will not be placed in the proper scope */
|
||
|
||
optarglist:
|
||
/* empty */
|
||
| ';' myxdecls
|
||
;
|
||
|
||
/* to get around the following situation: "int foo (int a) int b; {}" that
|
||
is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
|
||
|
||
myxdecls:
|
||
/* empty */
|
||
| mydecls
|
||
;
|
||
|
||
mydecls:
|
||
mydecl
|
||
| errstmt
|
||
| mydecls mydecl
|
||
| mydecl errstmt
|
||
;
|
||
|
||
mydecl:
|
||
declspecs_ts setspecs myparms ';'
|
||
{ POP_DECLSPEC_STACK; }
|
||
| declspecs_ts ';'
|
||
{ shadow_tag ($1); }
|
||
| declspecs_nots ';'
|
||
{ pedwarn ("empty declaration"); }
|
||
;
|
||
|
||
myparms:
|
||
myparm
|
||
{ push_parm_decl ($1); }
|
||
| myparms ',' myparm
|
||
{ push_parm_decl ($3); }
|
||
;
|
||
|
||
/* A single parameter declaration or parameter type name,
|
||
as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
|
||
|
||
myparm:
|
||
parm_declarator maybe_attribute
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
$1),
|
||
chainon ($2, all_prefix_attributes)); }
|
||
| notype_declarator maybe_attribute
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
$1),
|
||
chainon ($2, all_prefix_attributes)); }
|
||
| absdcl_maybe_attribute
|
||
{ $$ = $1; }
|
||
;
|
||
|
||
optparmlist:
|
||
/* empty */
|
||
{
|
||
$$ = NULL_TREE;
|
||
}
|
||
| ',' ELLIPSIS
|
||
{
|
||
/* oh what a kludge! */
|
||
$$ = objc_ellipsis_node;
|
||
}
|
||
| ','
|
||
{
|
||
pushlevel (0);
|
||
}
|
||
parmlist_2
|
||
{
|
||
/* returns a tree list node generated by get_parm_info */
|
||
$$ = $3;
|
||
poplevel (0, 0, 0);
|
||
}
|
||
;
|
||
|
||
unaryselector:
|
||
selector
|
||
;
|
||
|
||
keywordselector:
|
||
keyworddecl
|
||
|
||
| keywordselector keyworddecl
|
||
{
|
||
$$ = chainon ($1, $2);
|
||
}
|
||
;
|
||
|
||
selector:
|
||
IDENTIFIER
|
||
| TYPENAME
|
||
| CLASSNAME
|
||
| OBJECTNAME
|
||
| reservedwords
|
||
;
|
||
|
||
reservedwords:
|
||
ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
|
||
| SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
|
||
| GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
|
||
| TYPESPEC | TYPE_QUAL
|
||
;
|
||
|
||
keyworddecl:
|
||
selector ':' '(' typename ')' identifier
|
||
{
|
||
$$ = build_keyword_decl ($1, $4, $6);
|
||
}
|
||
|
||
| selector ':' identifier
|
||
{
|
||
$$ = build_keyword_decl ($1, NULL_TREE, $3);
|
||
}
|
||
|
||
| ':' '(' typename ')' identifier
|
||
{
|
||
$$ = build_keyword_decl (NULL_TREE, $3, $5);
|
||
}
|
||
|
||
| ':' identifier
|
||
{
|
||
$$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
|
||
}
|
||
;
|
||
|
||
messageargs:
|
||
selector
|
||
| keywordarglist
|
||
;
|
||
|
||
keywordarglist:
|
||
keywordarg
|
||
| keywordarglist keywordarg
|
||
{
|
||
$$ = chainon ($1, $2);
|
||
}
|
||
;
|
||
|
||
|
||
keywordexpr:
|
||
nonnull_exprlist
|
||
{
|
||
if (TREE_CHAIN ($1) == NULL_TREE)
|
||
/* just return the expr., remove a level of indirection */
|
||
$$ = TREE_VALUE ($1);
|
||
else
|
||
/* we have a comma expr., we will collapse later */
|
||
$$ = $1;
|
||
}
|
||
;
|
||
|
||
keywordarg:
|
||
selector ':' keywordexpr
|
||
{
|
||
$$ = build_tree_list ($1, $3);
|
||
}
|
||
| ':' keywordexpr
|
||
{
|
||
$$ = build_tree_list (NULL_TREE, $2);
|
||
}
|
||
;
|
||
|
||
receiver:
|
||
expr
|
||
| CLASSNAME
|
||
{
|
||
$$ = get_class_reference ($1);
|
||
}
|
||
;
|
||
|
||
objcmessageexpr:
|
||
'['
|
||
{ objc_receiver_context = 1; }
|
||
receiver
|
||
{ objc_receiver_context = 0; }
|
||
messageargs ']'
|
||
{
|
||
$$ = build_tree_list ($3, $5);
|
||
}
|
||
;
|
||
|
||
selectorarg:
|
||
selector
|
||
| keywordnamelist
|
||
;
|
||
|
||
keywordnamelist:
|
||
keywordname
|
||
| keywordnamelist keywordname
|
||
{
|
||
$$ = chainon ($1, $2);
|
||
}
|
||
;
|
||
|
||
keywordname:
|
||
selector ':'
|
||
{
|
||
$$ = build_tree_list ($1, NULL_TREE);
|
||
}
|
||
| ':'
|
||
{
|
||
$$ = build_tree_list (NULL_TREE, NULL_TREE);
|
||
}
|
||
;
|
||
|
||
objcselectorexpr:
|
||
SELECTOR '(' selectorarg ')'
|
||
{
|
||
$$ = $3;
|
||
}
|
||
;
|
||
|
||
objcprotocolexpr:
|
||
PROTOCOL '(' identifier ')'
|
||
{
|
||
$$ = $3;
|
||
}
|
||
;
|
||
|
||
/* extension to support C-structures in the archiver */
|
||
|
||
objcencodeexpr:
|
||
ENCODE '(' typename ')'
|
||
{
|
||
$$ = groktypename ($3);
|
||
}
|
||
;
|
||
|
||
end ifobjc
|
||
%%
|
||
|
||
/* yylex() is a thin wrapper around c_lex(), all it does is translate
|
||
cpplib.h's token codes into yacc's token codes. */
|
||
|
||
static enum cpp_ttype last_token;
|
||
|
||
/* The reserved keyword table. */
|
||
struct resword
|
||
{
|
||
const char *word;
|
||
ENUM_BITFIELD(rid) rid : 16;
|
||
unsigned int disable : 16;
|
||
};
|
||
|
||
/* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
|
||
_true_. */
|
||
#define D_TRAD 0x01 /* not in traditional C */
|
||
#define D_C89 0x02 /* not in C89 */
|
||
#define D_EXT 0x04 /* GCC extension */
|
||
#define D_EXT89 0x08 /* GCC extension incorporated in C99 */
|
||
#define D_OBJC 0x10 /* Objective C only */
|
||
|
||
static const struct resword reswords[] =
|
||
{
|
||
{ "_Bool", RID_BOOL, 0 },
|
||
{ "_Complex", RID_COMPLEX, 0 },
|
||
{ "__FUNCTION__", RID_FUNCTION_NAME, 0 },
|
||
{ "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
|
||
{ "__alignof", RID_ALIGNOF, 0 },
|
||
{ "__alignof__", RID_ALIGNOF, 0 },
|
||
{ "__asm", RID_ASM, 0 },
|
||
{ "__asm__", RID_ASM, 0 },
|
||
{ "__attribute", RID_ATTRIBUTE, 0 },
|
||
{ "__attribute__", RID_ATTRIBUTE, 0 },
|
||
{ "__bounded", RID_BOUNDED, 0 },
|
||
{ "__bounded__", RID_BOUNDED, 0 },
|
||
{ "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
|
||
{ "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
|
||
{ "__builtin_va_arg", RID_VA_ARG, 0 },
|
||
{ "__complex", RID_COMPLEX, 0 },
|
||
{ "__complex__", RID_COMPLEX, 0 },
|
||
{ "__const", RID_CONST, 0 },
|
||
{ "__const__", RID_CONST, 0 },
|
||
{ "__extension__", RID_EXTENSION, 0 },
|
||
{ "__func__", RID_C99_FUNCTION_NAME, 0 },
|
||
{ "__imag", RID_IMAGPART, 0 },
|
||
{ "__imag__", RID_IMAGPART, 0 },
|
||
{ "__inline", RID_INLINE, 0 },
|
||
{ "__inline__", RID_INLINE, 0 },
|
||
{ "__label__", RID_LABEL, 0 },
|
||
{ "__ptrbase", RID_PTRBASE, 0 },
|
||
{ "__ptrbase__", RID_PTRBASE, 0 },
|
||
{ "__ptrextent", RID_PTREXTENT, 0 },
|
||
{ "__ptrextent__", RID_PTREXTENT, 0 },
|
||
{ "__ptrvalue", RID_PTRVALUE, 0 },
|
||
{ "__ptrvalue__", RID_PTRVALUE, 0 },
|
||
{ "__real", RID_REALPART, 0 },
|
||
{ "__real__", RID_REALPART, 0 },
|
||
{ "__restrict", RID_RESTRICT, 0 },
|
||
{ "__restrict__", RID_RESTRICT, 0 },
|
||
{ "__signed", RID_SIGNED, 0 },
|
||
{ "__signed__", RID_SIGNED, 0 },
|
||
{ "__typeof", RID_TYPEOF, 0 },
|
||
{ "__typeof__", RID_TYPEOF, 0 },
|
||
{ "__unbounded", RID_UNBOUNDED, 0 },
|
||
{ "__unbounded__", RID_UNBOUNDED, 0 },
|
||
{ "__volatile", RID_VOLATILE, 0 },
|
||
{ "__volatile__", RID_VOLATILE, 0 },
|
||
{ "asm", RID_ASM, D_EXT },
|
||
{ "auto", RID_AUTO, 0 },
|
||
{ "break", RID_BREAK, 0 },
|
||
{ "case", RID_CASE, 0 },
|
||
{ "char", RID_CHAR, 0 },
|
||
{ "const", RID_CONST, D_TRAD },
|
||
{ "continue", RID_CONTINUE, 0 },
|
||
{ "default", RID_DEFAULT, 0 },
|
||
{ "do", RID_DO, 0 },
|
||
{ "double", RID_DOUBLE, 0 },
|
||
{ "else", RID_ELSE, 0 },
|
||
{ "enum", RID_ENUM, 0 },
|
||
{ "extern", RID_EXTERN, 0 },
|
||
{ "float", RID_FLOAT, 0 },
|
||
{ "for", RID_FOR, 0 },
|
||
{ "goto", RID_GOTO, 0 },
|
||
{ "if", RID_IF, 0 },
|
||
{ "inline", RID_INLINE, D_TRAD|D_EXT89 },
|
||
{ "int", RID_INT, 0 },
|
||
{ "long", RID_LONG, 0 },
|
||
{ "register", RID_REGISTER, 0 },
|
||
{ "restrict", RID_RESTRICT, D_TRAD|D_C89 },
|
||
{ "return", RID_RETURN, 0 },
|
||
{ "short", RID_SHORT, 0 },
|
||
{ "signed", RID_SIGNED, D_TRAD },
|
||
{ "sizeof", RID_SIZEOF, 0 },
|
||
{ "static", RID_STATIC, 0 },
|
||
{ "struct", RID_STRUCT, 0 },
|
||
{ "switch", RID_SWITCH, 0 },
|
||
{ "typedef", RID_TYPEDEF, 0 },
|
||
{ "typeof", RID_TYPEOF, D_TRAD|D_EXT },
|
||
{ "union", RID_UNION, 0 },
|
||
{ "unsigned", RID_UNSIGNED, 0 },
|
||
{ "void", RID_VOID, 0 },
|
||
{ "volatile", RID_VOLATILE, D_TRAD },
|
||
{ "while", RID_WHILE, 0 },
|
||
ifobjc
|
||
{ "id", RID_ID, D_OBJC },
|
||
|
||
/* These objc keywords are recognized only immediately after
|
||
an '@'. */
|
||
{ "class", RID_AT_CLASS, D_OBJC },
|
||
{ "compatibility_alias", RID_AT_ALIAS, D_OBJC },
|
||
{ "defs", RID_AT_DEFS, D_OBJC },
|
||
{ "encode", RID_AT_ENCODE, D_OBJC },
|
||
{ "end", RID_AT_END, D_OBJC },
|
||
{ "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
|
||
{ "interface", RID_AT_INTERFACE, D_OBJC },
|
||
{ "private", RID_AT_PRIVATE, D_OBJC },
|
||
{ "protected", RID_AT_PROTECTED, D_OBJC },
|
||
{ "protocol", RID_AT_PROTOCOL, D_OBJC },
|
||
{ "public", RID_AT_PUBLIC, D_OBJC },
|
||
{ "selector", RID_AT_SELECTOR, D_OBJC },
|
||
|
||
/* These are recognized only in protocol-qualifier context
|
||
(see above) */
|
||
{ "bycopy", RID_BYCOPY, D_OBJC },
|
||
{ "byref", RID_BYREF, D_OBJC },
|
||
{ "in", RID_IN, D_OBJC },
|
||
{ "inout", RID_INOUT, D_OBJC },
|
||
{ "oneway", RID_ONEWAY, D_OBJC },
|
||
{ "out", RID_OUT, D_OBJC },
|
||
end ifobjc
|
||
};
|
||
#define N_reswords (sizeof reswords / sizeof (struct resword))
|
||
|
||
/* Table mapping from RID_* constants to yacc token numbers.
|
||
Unfortunately we have to have entries for all the keywords in all
|
||
three languages. */
|
||
static const short rid_to_yy[RID_MAX] =
|
||
{
|
||
/* RID_STATIC */ SCSPEC,
|
||
/* RID_UNSIGNED */ TYPESPEC,
|
||
/* RID_LONG */ TYPESPEC,
|
||
/* RID_CONST */ TYPE_QUAL,
|
||
/* RID_EXTERN */ SCSPEC,
|
||
/* RID_REGISTER */ SCSPEC,
|
||
/* RID_TYPEDEF */ SCSPEC,
|
||
/* RID_SHORT */ TYPESPEC,
|
||
/* RID_INLINE */ SCSPEC,
|
||
/* RID_VOLATILE */ TYPE_QUAL,
|
||
/* RID_SIGNED */ TYPESPEC,
|
||
/* RID_AUTO */ SCSPEC,
|
||
/* RID_RESTRICT */ TYPE_QUAL,
|
||
|
||
/* C extensions */
|
||
/* RID_BOUNDED */ TYPE_QUAL,
|
||
/* RID_UNBOUNDED */ TYPE_QUAL,
|
||
/* RID_COMPLEX */ TYPESPEC,
|
||
|
||
/* C++ */
|
||
/* RID_FRIEND */ 0,
|
||
/* RID_VIRTUAL */ 0,
|
||
/* RID_EXPLICIT */ 0,
|
||
/* RID_EXPORT */ 0,
|
||
/* RID_MUTABLE */ 0,
|
||
|
||
/* ObjC */
|
||
/* RID_IN */ TYPE_QUAL,
|
||
/* RID_OUT */ TYPE_QUAL,
|
||
/* RID_INOUT */ TYPE_QUAL,
|
||
/* RID_BYCOPY */ TYPE_QUAL,
|
||
/* RID_BYREF */ TYPE_QUAL,
|
||
/* RID_ONEWAY */ TYPE_QUAL,
|
||
|
||
/* C */
|
||
/* RID_INT */ TYPESPEC,
|
||
/* RID_CHAR */ TYPESPEC,
|
||
/* RID_FLOAT */ TYPESPEC,
|
||
/* RID_DOUBLE */ TYPESPEC,
|
||
/* RID_VOID */ TYPESPEC,
|
||
/* RID_ENUM */ ENUM,
|
||
/* RID_STRUCT */ STRUCT,
|
||
/* RID_UNION */ UNION,
|
||
/* RID_IF */ IF,
|
||
/* RID_ELSE */ ELSE,
|
||
/* RID_WHILE */ WHILE,
|
||
/* RID_DO */ DO,
|
||
/* RID_FOR */ FOR,
|
||
/* RID_SWITCH */ SWITCH,
|
||
/* RID_CASE */ CASE,
|
||
/* RID_DEFAULT */ DEFAULT,
|
||
/* RID_BREAK */ BREAK,
|
||
/* RID_CONTINUE */ CONTINUE,
|
||
/* RID_RETURN */ RETURN,
|
||
/* RID_GOTO */ GOTO,
|
||
/* RID_SIZEOF */ SIZEOF,
|
||
|
||
/* C extensions */
|
||
/* RID_ASM */ ASM_KEYWORD,
|
||
/* RID_TYPEOF */ TYPEOF,
|
||
/* RID_ALIGNOF */ ALIGNOF,
|
||
/* RID_ATTRIBUTE */ ATTRIBUTE,
|
||
/* RID_VA_ARG */ VA_ARG,
|
||
/* RID_EXTENSION */ EXTENSION,
|
||
/* RID_IMAGPART */ IMAGPART,
|
||
/* RID_REALPART */ REALPART,
|
||
/* RID_LABEL */ LABEL,
|
||
/* RID_PTRBASE */ PTR_BASE,
|
||
/* RID_PTREXTENT */ PTR_EXTENT,
|
||
/* RID_PTRVALUE */ PTR_VALUE,
|
||
|
||
/* RID_CHOOSE_EXPR */ CHOOSE_EXPR,
|
||
/* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P,
|
||
|
||
/* RID_FUNCTION_NAME */ STRING_FUNC_NAME,
|
||
/* RID_PRETTY_FUNCTION_NAME */ STRING_FUNC_NAME,
|
||
/* RID_C99_FUNCTION_NAME */ VAR_FUNC_NAME,
|
||
|
||
/* C++ */
|
||
/* RID_BOOL */ TYPESPEC,
|
||
/* RID_WCHAR */ 0,
|
||
/* RID_CLASS */ 0,
|
||
/* RID_PUBLIC */ 0,
|
||
/* RID_PRIVATE */ 0,
|
||
/* RID_PROTECTED */ 0,
|
||
/* RID_TEMPLATE */ 0,
|
||
/* RID_NULL */ 0,
|
||
/* RID_CATCH */ 0,
|
||
/* RID_DELETE */ 0,
|
||
/* RID_FALSE */ 0,
|
||
/* RID_NAMESPACE */ 0,
|
||
/* RID_NEW */ 0,
|
||
/* RID_OPERATOR */ 0,
|
||
/* RID_THIS */ 0,
|
||
/* RID_THROW */ 0,
|
||
/* RID_TRUE */ 0,
|
||
/* RID_TRY */ 0,
|
||
/* RID_TYPENAME */ 0,
|
||
/* RID_TYPEID */ 0,
|
||
/* RID_USING */ 0,
|
||
|
||
/* casts */
|
||
/* RID_CONSTCAST */ 0,
|
||
/* RID_DYNCAST */ 0,
|
||
/* RID_REINTCAST */ 0,
|
||
/* RID_STATCAST */ 0,
|
||
|
||
/* alternate spellings */
|
||
/* RID_AND */ 0,
|
||
/* RID_AND_EQ */ 0,
|
||
/* RID_NOT */ 0,
|
||
/* RID_NOT_EQ */ 0,
|
||
/* RID_OR */ 0,
|
||
/* RID_OR_EQ */ 0,
|
||
/* RID_XOR */ 0,
|
||
/* RID_XOR_EQ */ 0,
|
||
/* RID_BITAND */ 0,
|
||
/* RID_BITOR */ 0,
|
||
/* RID_COMPL */ 0,
|
||
|
||
/* Objective C */
|
||
/* RID_ID */ OBJECTNAME,
|
||
/* RID_AT_ENCODE */ ENCODE,
|
||
/* RID_AT_END */ END,
|
||
/* RID_AT_CLASS */ CLASS,
|
||
/* RID_AT_ALIAS */ ALIAS,
|
||
/* RID_AT_DEFS */ DEFS,
|
||
/* RID_AT_PRIVATE */ PRIVATE,
|
||
/* RID_AT_PROTECTED */ PROTECTED,
|
||
/* RID_AT_PUBLIC */ PUBLIC,
|
||
/* RID_AT_PROTOCOL */ PROTOCOL,
|
||
/* RID_AT_SELECTOR */ SELECTOR,
|
||
/* RID_AT_INTERFACE */ INTERFACE,
|
||
/* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
|
||
};
|
||
|
||
static void
|
||
init_reswords ()
|
||
{
|
||
unsigned int i;
|
||
tree id;
|
||
int mask = (flag_isoc99 ? 0 : D_C89)
|
||
| (flag_traditional ? D_TRAD : 0)
|
||
| (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
|
||
|
||
if (c_language != clk_objective_c)
|
||
mask |= D_OBJC;
|
||
|
||
/* It is not necessary to register ridpointers as a GC root, because
|
||
all the trees it points to are permanently interned in the
|
||
get_identifier hash anyway. */
|
||
ridpointers = (tree *) xcalloc ((int) RID_MAX, sizeof (tree));
|
||
for (i = 0; i < N_reswords; i++)
|
||
{
|
||
/* If a keyword is disabled, do not enter it into the table
|
||
and so create a canonical spelling that isn't a keyword. */
|
||
if (reswords[i].disable & mask)
|
||
continue;
|
||
|
||
id = get_identifier (reswords[i].word);
|
||
C_RID_CODE (id) = reswords[i].rid;
|
||
C_IS_RESERVED_WORD (id) = 1;
|
||
ridpointers [(int) reswords[i].rid] = id;
|
||
}
|
||
}
|
||
|
||
#define NAME(type) cpp_type2name (type)
|
||
|
||
static void
|
||
yyerror (msgid)
|
||
const char *msgid;
|
||
{
|
||
const char *string = _(msgid);
|
||
|
||
if (last_token == CPP_EOF)
|
||
error ("%s at end of input", string);
|
||
else if (last_token == CPP_CHAR || last_token == CPP_WCHAR)
|
||
{
|
||
unsigned int val = TREE_INT_CST_LOW (yylval.ttype);
|
||
const char *const ell = (last_token == CPP_CHAR) ? "" : "L";
|
||
if (val <= UCHAR_MAX && ISGRAPH (val))
|
||
error ("%s before %s'%c'", string, ell, val);
|
||
else
|
||
error ("%s before %s'\\x%x'", string, ell, val);
|
||
}
|
||
else if (last_token == CPP_STRING
|
||
|| last_token == CPP_WSTRING)
|
||
error ("%s before string constant", string);
|
||
else if (last_token == CPP_NUMBER)
|
||
error ("%s before numeric constant", string);
|
||
else if (last_token == CPP_NAME)
|
||
error ("%s before \"%s\"", string, IDENTIFIER_POINTER (yylval.ttype));
|
||
else
|
||
error ("%s before '%s' token", string, NAME(last_token));
|
||
}
|
||
|
||
static int
|
||
yylexname ()
|
||
{
|
||
tree decl;
|
||
|
||
ifobjc
|
||
int objc_force_identifier = objc_need_raw_identifier;
|
||
OBJC_NEED_RAW_IDENTIFIER (0);
|
||
end ifobjc
|
||
|
||
if (C_IS_RESERVED_WORD (yylval.ttype))
|
||
{
|
||
enum rid rid_code = C_RID_CODE (yylval.ttype);
|
||
|
||
ifobjc
|
||
/* Turn non-typedefed refs to "id" into plain identifiers; this
|
||
allows constructs like "void foo(id id);" to work. */
|
||
if (rid_code == RID_ID)
|
||
{
|
||
decl = lookup_name (yylval.ttype);
|
||
if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
|
||
return IDENTIFIER;
|
||
}
|
||
|
||
if (!OBJC_IS_AT_KEYWORD (rid_code)
|
||
&& (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
|
||
end ifobjc
|
||
{
|
||
int yycode = rid_to_yy[(int) rid_code];
|
||
if (yycode == STRING_FUNC_NAME)
|
||
{
|
||
/* __FUNCTION__ and __PRETTY_FUNCTION__ get converted
|
||
to string constants. */
|
||
const char *name = fname_string (rid_code);
|
||
|
||
yylval.ttype = build_string (strlen (name) + 1, name);
|
||
C_ARTIFICIAL_STRING_P (yylval.ttype) = 1;
|
||
last_token = CPP_STRING; /* so yyerror won't choke */
|
||
return STRING;
|
||
}
|
||
|
||
/* Return the canonical spelling for this keyword. */
|
||
yylval.ttype = ridpointers[(int) rid_code];
|
||
return yycode;
|
||
}
|
||
}
|
||
|
||
decl = lookup_name (yylval.ttype);
|
||
if (decl)
|
||
{
|
||
if (TREE_CODE (decl) == TYPE_DECL)
|
||
return TYPENAME;
|
||
}
|
||
ifobjc
|
||
else
|
||
{
|
||
tree objc_interface_decl = is_class_name (yylval.ttype);
|
||
/* ObjC class names are in the same namespace as variables and
|
||
typedefs, and hence are shadowed by local declarations. */
|
||
if (objc_interface_decl
|
||
&& (global_bindings_p ()
|
||
|| (!objc_force_identifier && !decl)))
|
||
{
|
||
yylval.ttype = objc_interface_decl;
|
||
return CLASSNAME;
|
||
}
|
||
}
|
||
end ifobjc
|
||
|
||
return IDENTIFIER;
|
||
}
|
||
|
||
|
||
static inline int
|
||
_yylex ()
|
||
{
|
||
get_next:
|
||
last_token = c_lex (&yylval.ttype);
|
||
switch (last_token)
|
||
{
|
||
case CPP_EQ: return '=';
|
||
case CPP_NOT: return '!';
|
||
case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
|
||
case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
|
||
case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
|
||
case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
|
||
case CPP_MULT: yylval.code = MULT_EXPR; return '*';
|
||
case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
|
||
case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
|
||
case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
|
||
case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
|
||
case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
|
||
case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
|
||
case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
|
||
|
||
case CPP_COMPL: return '~';
|
||
case CPP_AND_AND: return ANDAND;
|
||
case CPP_OR_OR: return OROR;
|
||
case CPP_QUERY: return '?';
|
||
case CPP_OPEN_PAREN: return '(';
|
||
case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
|
||
case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
|
||
case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
|
||
case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
|
||
|
||
case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
|
||
case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
|
||
case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
|
||
case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
|
||
case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
|
||
case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
|
||
case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
|
||
case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
|
||
case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
|
||
case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
|
||
|
||
case CPP_OPEN_SQUARE: return '[';
|
||
case CPP_CLOSE_SQUARE: return ']';
|
||
case CPP_OPEN_BRACE: return '{';
|
||
case CPP_CLOSE_BRACE: return '}';
|
||
case CPP_ELLIPSIS: return ELLIPSIS;
|
||
|
||
case CPP_PLUS_PLUS: return PLUSPLUS;
|
||
case CPP_MINUS_MINUS: return MINUSMINUS;
|
||
case CPP_DEREF: return POINTSAT;
|
||
case CPP_DOT: return '.';
|
||
|
||
/* The following tokens may affect the interpretation of any
|
||
identifiers following, if doing Objective-C. */
|
||
case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
|
||
case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
|
||
case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
|
||
case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
|
||
|
||
case CPP_EOF:
|
||
return 0;
|
||
|
||
case CPP_NAME:
|
||
return yylexname ();
|
||
|
||
case CPP_NUMBER:
|
||
case CPP_CHAR:
|
||
case CPP_WCHAR:
|
||
return CONSTANT;
|
||
|
||
case CPP_STRING:
|
||
case CPP_WSTRING:
|
||
return STRING;
|
||
|
||
/* This token is Objective-C specific. It gives the next token
|
||
special significance. */
|
||
case CPP_ATSIGN:
|
||
ifobjc
|
||
{
|
||
tree after_at;
|
||
enum cpp_ttype after_at_type;
|
||
|
||
after_at_type = c_lex (&after_at);
|
||
|
||
if (after_at_type == CPP_NAME
|
||
&& C_IS_RESERVED_WORD (after_at)
|
||
&& OBJC_IS_AT_KEYWORD (C_RID_CODE (after_at)))
|
||
{
|
||
yylval.ttype = after_at;
|
||
last_token = after_at_type;
|
||
return rid_to_yy [(int) C_RID_CODE (after_at)];
|
||
}
|
||
_cpp_backup_tokens (parse_in, 1);
|
||
return '@';
|
||
}
|
||
end ifobjc
|
||
|
||
/* These tokens are C++ specific (and will not be generated
|
||
in C mode, but let's be cautious). */
|
||
case CPP_SCOPE:
|
||
case CPP_DEREF_STAR:
|
||
case CPP_DOT_STAR:
|
||
case CPP_MIN_EQ:
|
||
case CPP_MAX_EQ:
|
||
case CPP_MIN:
|
||
case CPP_MAX:
|
||
/* These tokens should not survive translation phase 4. */
|
||
case CPP_HASH:
|
||
case CPP_PASTE:
|
||
error ("syntax error at '%s' token", NAME(last_token));
|
||
goto get_next;
|
||
|
||
default:
|
||
abort ();
|
||
}
|
||
/* NOTREACHED */
|
||
}
|
||
|
||
static int
|
||
yylex()
|
||
{
|
||
int r;
|
||
timevar_push (TV_LEX);
|
||
r = _yylex();
|
||
timevar_pop (TV_LEX);
|
||
return r;
|
||
}
|
||
|
||
/* Sets the value of the 'yydebug' variable to VALUE.
|
||
This is a function so we don't have to have YYDEBUG defined
|
||
in order to build the compiler. */
|
||
|
||
void
|
||
c_set_yydebug (value)
|
||
int value;
|
||
{
|
||
#if YYDEBUG != 0
|
||
yydebug = value;
|
||
#else
|
||
warning ("YYDEBUG not defined");
|
||
#endif
|
||
}
|
||
|
||
/* Function used when yydebug is set, to print a token in more detail. */
|
||
|
||
static void
|
||
yyprint (file, yychar, yyl)
|
||
FILE *file;
|
||
int yychar;
|
||
YYSTYPE yyl;
|
||
{
|
||
tree t = yyl.ttype;
|
||
|
||
fprintf (file, " [%s]", NAME(last_token));
|
||
|
||
switch (yychar)
|
||
{
|
||
case IDENTIFIER:
|
||
case TYPENAME:
|
||
case OBJECTNAME:
|
||
case TYPESPEC:
|
||
case TYPE_QUAL:
|
||
case SCSPEC:
|
||
if (IDENTIFIER_POINTER (t))
|
||
fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
|
||
break;
|
||
|
||
case CONSTANT:
|
||
fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
|
||
if (TREE_CODE (t) == INTEGER_CST)
|
||
fprintf (file,
|
||
#if HOST_BITS_PER_WIDE_INT == 64
|
||
#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
|
||
" 0x%x%016x",
|
||
#else
|
||
#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
|
||
" 0x%lx%016lx",
|
||
#else
|
||
" 0x%llx%016llx",
|
||
#endif
|
||
#endif
|
||
#else
|
||
#if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
|
||
" 0x%lx%08lx",
|
||
#else
|
||
" 0x%x%08x",
|
||
#endif
|
||
#endif
|
||
TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* This is not the ideal place to put these, but we have to get them out
|
||
of c-lex.c because cp/lex.c has its own versions. */
|
||
|
||
/* Return something to represent absolute declarators containing a *.
|
||
TARGET is the absolute declarator that the * contains.
|
||
TYPE_QUALS_ATTRS is a list of modifiers such as const or volatile
|
||
to apply to the pointer type, represented as identifiers, possible mixed
|
||
with attributes.
|
||
|
||
We return an INDIRECT_REF whose "contents" are TARGET (inside a TREE_LIST,
|
||
if attributes are present) and whose type is the modifier list. */
|
||
|
||
tree
|
||
make_pointer_declarator (type_quals_attrs, target)
|
||
tree type_quals_attrs, target;
|
||
{
|
||
tree quals, attrs;
|
||
tree itarget = target;
|
||
split_specs_attrs (type_quals_attrs, &quals, &attrs);
|
||
if (attrs != NULL_TREE)
|
||
itarget = tree_cons (attrs, target, NULL_TREE);
|
||
return build1 (INDIRECT_REF, quals, itarget);
|
||
}
|