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3092 lines
85 KiB
C
3092 lines
85 KiB
C
/* YACC parser for C syntax and for Objective C. -*-c-*-
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||
Copyright (C) 1987, 88, 89, 92-98, 1999 Free Software Foundation, Inc.
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||
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This file is part of GNU CC.
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||
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||
GNU CC is free software; you can redistribute it and/or modify
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||
it under the terms of the GNU General Public License as published by
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||
the Free Software Foundation; either version 2, or (at your option)
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||
any later version.
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||
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||
GNU CC is distributed in the hope that it will be useful,
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||
but WITHOUT ANY WARRANTY; without even the implied warranty of
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||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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||
GNU General Public License for more details.
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||
|
||
You should have received a copy of the GNU General Public License
|
||
along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 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 66
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end ifobjc
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ifc
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%expect 51
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||
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/* These are the 23 conflicts you should get in parse.output;
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the state numbers may vary if minor changes in the grammar are made.
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State 42 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTE.)
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State 44 contains 1 shift/reduce conflict. (Two ways to recover from error.)
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State 103 contains 1 shift/reduce conflict. (Two ways to recover from error.)
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State 110 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTE.)
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State 111 contains 1 shift/reduce conflict. (Two ways to recover from error.)
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State 115 contains 1 shift/reduce conflict. (Two ways to recover from error.)
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State 132 contains 1 shift/reduce conflict. (See comment at component_decl.)
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State 180 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTE.)
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State 194 contains 2 shift/reduce conflict. (Four ways to parse this.)
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State 202 contains 1 shift/reduce conflict. (Two ways to recover from error.)
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State 214 contains 1 shift/reduce conflict. (Two ways to recover from error.)
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State 220 contains 1 shift/reduce conflict. (Two ways to recover from error.)
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State 304 contains 2 shift/reduce conflicts. (Four ways to parse this.)
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State 335 contains 2 shift/reduce conflicts. (Four ways to parse this.)
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State 347 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTES.)
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State 352 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTES.)
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State 383 contains 2 shift/reduce conflicts. (Four ways to parse this.)
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State 434 contains 2 shift/reduce conflicts. (Four ways to parse this.) */
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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 <setjmp.h>
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#include "tree.h"
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#include "input.h"
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#include "c-lex.h"
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#include "c-tree.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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#ifdef MULTIBYTE_CHARS
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#include <locale.h>
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#endif
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ifobjc
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#include "objc-act.h"
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end ifobjc
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/* Since parsers are distinct for each language, put the language string
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definition here. */
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ifobjc
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char *language_string = "GNU Obj-C";
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end ifobjc
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ifc
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char *language_string = "GNU C";
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end ifc
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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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%}
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%start program
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%union {long itype; tree ttype; enum tree_code code;
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char *filename; int lineno; int ends_in_label; }
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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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/* 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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/* 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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/* "...", 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
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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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/* Define the operator tokens and their precedences.
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The value is an integer because, if used, it is the tree code
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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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/* 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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/* Objective-C string constants in raw form.
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yylval is an OBJC_STRING_CST node. */
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%token OBJC_STRING
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%type <code> unop
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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> typed_declspecs reserved_declspecs
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%type <ttype> typed_typespecs reserved_typespecquals
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%type <ttype> declmods typespec typespecqual_reserved
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%type <ttype> typed_declspecs_no_prefix_attr reserved_declspecs_no_prefix_attr
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%type <ttype> declmods_no_prefix_attr
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%type <ttype> SCSPEC TYPESPEC TYPE_QUAL nonempty_type_quals 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
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%type <ttype> compstmt
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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> structsp component_decl_list component_decl_list2
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%type <ttype> component_decl components component_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 type_quals
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%type <ttype> xexpr parms parm 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
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%type <ends_in_label> lineno_stmt_or_label lineno_stmt_or_labels stmt_or_label
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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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%type <ttype> CLASSNAME OBJC_STRING 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 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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/* Stack of saved values of current_declspecs and prefix_attributes. */
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static tree declspec_stack;
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||
/* 1 if we explained undeclared var errors. */
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static int undeclared_variable_notice;
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ifobjc
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/* Objective-C specific information */
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||
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tree objc_interface_context;
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tree objc_implementation_context;
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tree objc_method_context;
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||
tree objc_ivar_chain;
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||
tree objc_ivar_context;
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||
enum tree_code objc_inherit_code;
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int objc_receiver_context;
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int objc_public_flag;
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end ifobjc
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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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extern void yyprint PROTO ((FILE *, int, YYSTYPE));
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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 ("ANSI 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,
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get us back to the global binding level. */
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while (! global_bindings_p ())
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poplevel (0, 0, 0);
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finish_file ();
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}
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;
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/* the reason for the strange actions in this rule
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is so that notype_initdecls when reached via datadef
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can find a valid list of type and sc specs in $0. */
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extdefs:
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{$<ttype>$ = NULL_TREE; } extdef
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| extdefs {$<ttype>$ = NULL_TREE; } extdef
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;
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extdef:
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fndef
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| datadef
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ifobjc
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| objcdef
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end ifobjc
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| ASM_KEYWORD '(' expr ')' ';'
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{ STRIP_NOPS ($3);
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if ((TREE_CODE ($3) == ADDR_EXPR
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&& TREE_CODE (TREE_OPERAND ($3, 0)) == STRING_CST)
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|| TREE_CODE ($3) == STRING_CST)
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assemble_asm ($3);
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||
else
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||
error ("argument of `asm' is not a constant string"); }
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||
| extension extdef
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{ pedantic = $<itype>1; }
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;
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datadef:
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||
setspecs notype_initdecls ';'
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{ if (pedantic)
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||
error ("ANSI C forbids data definition with no type or storage class");
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else if (!flag_traditional)
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warning ("data definition has no type or storage class");
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current_declspecs = TREE_VALUE (declspec_stack);
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prefix_attributes = TREE_PURPOSE (declspec_stack);
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declspec_stack = TREE_CHAIN (declspec_stack);
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||
resume_momentary ($1); }
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||
| declmods setspecs notype_initdecls ';'
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{ current_declspecs = TREE_VALUE (declspec_stack);
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prefix_attributes = TREE_PURPOSE (declspec_stack);
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declspec_stack = TREE_CHAIN (declspec_stack);
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||
resume_momentary ($2); }
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||
| typed_declspecs setspecs initdecls ';'
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{ current_declspecs = TREE_VALUE (declspec_stack);
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prefix_attributes = TREE_PURPOSE (declspec_stack);
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||
declspec_stack = TREE_CHAIN (declspec_stack);
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||
resume_momentary ($2); }
|
||
| declmods ';'
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||
{ pedwarn ("empty declaration"); }
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||
| typed_declspecs ';'
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||
{ shadow_tag ($1); }
|
||
| error ';'
|
||
| error '}'
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||
| ';'
|
||
{ if (pedantic)
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||
pedwarn ("ANSI C does not allow extra `;' outside of a function"); }
|
||
;
|
||
|
||
fndef:
|
||
typed_declspecs setspecs declarator
|
||
{ if (! start_function (current_declspecs, $3,
|
||
prefix_attributes, NULL_TREE, 0))
|
||
YYERROR1;
|
||
reinit_parse_for_function (); }
|
||
old_style_parm_decls
|
||
{ store_parm_decls (); }
|
||
compstmt_or_error
|
||
{ finish_function (0);
|
||
current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
| typed_declspecs setspecs declarator error
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||
{ current_declspecs = TREE_VALUE (declspec_stack);
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||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
| declmods setspecs notype_declarator
|
||
{ if (! start_function (current_declspecs, $3,
|
||
prefix_attributes, NULL_TREE, 0))
|
||
YYERROR1;
|
||
reinit_parse_for_function (); }
|
||
old_style_parm_decls
|
||
{ store_parm_decls (); }
|
||
compstmt_or_error
|
||
{ finish_function (0);
|
||
current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
| declmods setspecs notype_declarator error
|
||
{ current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
| setspecs notype_declarator
|
||
{ if (! start_function (NULL_TREE, $2,
|
||
prefix_attributes, NULL_TREE, 0))
|
||
YYERROR1;
|
||
reinit_parse_for_function (); }
|
||
old_style_parm_decls
|
||
{ store_parm_decls (); }
|
||
compstmt_or_error
|
||
{ finish_function (0);
|
||
current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($1); }
|
||
| setspecs notype_declarator error
|
||
{ current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($1); }
|
||
;
|
||
|
||
identifier:
|
||
IDENTIFIER
|
||
| TYPENAME
|
||
ifobjc
|
||
| OBJECTNAME
|
||
| CLASSNAME
|
||
end ifobjc
|
||
;
|
||
|
||
unop: '&'
|
||
{ $$ = ADDR_EXPR; }
|
||
| '-'
|
||
{ $$ = NEGATE_EXPR; }
|
||
| '+'
|
||
{ $$ = CONVERT_EXPR; }
|
||
| PLUSPLUS
|
||
{ $$ = 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;
|
||
pedantic = $<itype>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
|
||
{ tree label = lookup_label ($2);
|
||
if (pedantic)
|
||
pedwarn ("ANSI C forbids `&&'");
|
||
if (label == 0)
|
||
$$ = null_pointer_node;
|
||
else
|
||
{
|
||
TREE_USED (label) = 1;
|
||
$$ = build1 (ADDR_EXPR, ptr_type_node, label);
|
||
TREE_CONSTANT ($$) = 1;
|
||
}
|
||
}
|
||
/* This seems to be impossible on some machines, so let's turn it off.
|
||
You can use __builtin_next_arg to find the anonymous stack args.
|
||
| '&' ELLIPSIS
|
||
{ tree types = TYPE_ARG_TYPES (TREE_TYPE (current_function_decl));
|
||
$$ = 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 ("ANSI 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
|
||
{ $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
|
||
;
|
||
|
||
sizeof:
|
||
SIZEOF { skip_evaluation++; }
|
||
;
|
||
|
||
alignof:
|
||
ALIGNOF { skip_evaluation++; }
|
||
;
|
||
|
||
cast_expr:
|
||
unary_expr
|
||
| '(' typename ')' cast_expr %prec UNARY
|
||
{ tree type = groktypename ($2);
|
||
$$ = build_c_cast (type, $4); }
|
||
| '(' typename ')' '{'
|
||
{ start_init (NULL_TREE, NULL, 0);
|
||
$2 = groktypename ($2);
|
||
really_start_incremental_init ($2); }
|
||
initlist_maybe_comma '}' %prec UNARY
|
||
{ char *name;
|
||
tree result = pop_init_level (0);
|
||
tree type = $2;
|
||
finish_init ();
|
||
|
||
if (pedantic && ! flag_isoc9x)
|
||
pedwarn ("ANSI C forbids constructor expressions");
|
||
if (TYPE_NAME (type) != 0)
|
||
{
|
||
if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
|
||
name = IDENTIFIER_POINTER (TYPE_NAME (type));
|
||
else
|
||
name = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)));
|
||
}
|
||
else
|
||
name = "";
|
||
$$ = result;
|
||
if (TREE_CODE (type) == ARRAY_TYPE && TYPE_SIZE (type) == 0)
|
||
{
|
||
int failure = complete_array_type (type, $$, 1);
|
||
if (failure)
|
||
abort ();
|
||
}
|
||
}
|
||
;
|
||
|
||
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;
|
||
$$ = build_conditional_expr ($1, $4, $7); }
|
||
| expr_no_commas '?'
|
||
{ if (pedantic)
|
||
pedwarn ("ANSI C forbids omitting the middle term of a ?: expression");
|
||
/* Make sure first operand is calculated only once. */
|
||
$<ttype>2 = save_expr ($1);
|
||
$1 = truthvalue_conversion (default_conversion ($<ttype>2));
|
||
skip_evaluation += $1 == boolean_true_node; }
|
||
':' expr_no_commas
|
||
{ skip_evaluation -= $1 == boolean_true_node;
|
||
$$ = 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 (class == 'e' || class == '1'
|
||
|| class == '2' || 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 ($$));
|
||
if (class == 'e' || class == '1'
|
||
|| class == '2' || class == '<')
|
||
C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
|
||
}
|
||
;
|
||
|
||
primary:
|
||
IDENTIFIER
|
||
{
|
||
$$ = lastiddecl;
|
||
if (!$$ || $$ == error_mark_node)
|
||
{
|
||
if (yychar == YYEMPTY)
|
||
yychar = YYLEX;
|
||
if (yychar == '(')
|
||
{
|
||
ifobjc
|
||
tree decl;
|
||
|
||
if (objc_receiver_context
|
||
&& ! (objc_receiver_context
|
||
&& strcmp (IDENTIFIER_POINTER ($1), "super")))
|
||
/* we have a message to super */
|
||
$$ = get_super_receiver ();
|
||
else if (objc_method_context
|
||
&& (decl = is_ivar (objc_ivar_chain, $1)))
|
||
{
|
||
if (is_private (decl))
|
||
$$ = error_mark_node;
|
||
else
|
||
$$ = build_ivar_reference ($1);
|
||
}
|
||
else
|
||
end ifobjc
|
||
{
|
||
/* Ordinary implicit function declaration. */
|
||
$$ = implicitly_declare ($1);
|
||
assemble_external ($$);
|
||
TREE_USED ($$) = 1;
|
||
}
|
||
}
|
||
else if (current_function_decl == 0)
|
||
{
|
||
error ("`%s' undeclared here (not in a function)",
|
||
IDENTIFIER_POINTER ($1));
|
||
$$ = error_mark_node;
|
||
}
|
||
else
|
||
{
|
||
ifobjc
|
||
tree decl;
|
||
|
||
if (objc_receiver_context
|
||
&& ! strcmp (IDENTIFIER_POINTER ($1), "super"))
|
||
/* we have a message to super */
|
||
$$ = get_super_receiver ();
|
||
else if (objc_method_context
|
||
&& (decl = is_ivar (objc_ivar_chain, $1)))
|
||
{
|
||
if (is_private (decl))
|
||
$$ = error_mark_node;
|
||
else
|
||
$$ = build_ivar_reference ($1);
|
||
}
|
||
else
|
||
end ifobjc
|
||
{
|
||
if (IDENTIFIER_GLOBAL_VALUE ($1) != error_mark_node
|
||
|| IDENTIFIER_ERROR_LOCUS ($1) != current_function_decl)
|
||
{
|
||
error ("`%s' undeclared (first use in this function)",
|
||
IDENTIFIER_POINTER ($1));
|
||
|
||
if (! undeclared_variable_notice)
|
||
{
|
||
error ("(Each undeclared identifier is reported only once");
|
||
error ("for each function it appears in.)");
|
||
undeclared_variable_notice = 1;
|
||
}
|
||
}
|
||
$$ = error_mark_node;
|
||
/* Prevent repeated error messages. */
|
||
IDENTIFIER_GLOBAL_VALUE ($1) = error_mark_node;
|
||
IDENTIFIER_ERROR_LOCUS ($1) = current_function_decl;
|
||
}
|
||
}
|
||
}
|
||
else if (TREE_TYPE ($$) == error_mark_node)
|
||
$$ = error_mark_node;
|
||
else if (C_DECL_ANTICIPATED ($$))
|
||
{
|
||
/* The first time we see a build-in function used,
|
||
if it has not been declared. */
|
||
C_DECL_ANTICIPATED ($$) = 0;
|
||
if (yychar == YYEMPTY)
|
||
yychar = YYLEX;
|
||
if (yychar == '(')
|
||
{
|
||
/* Omit the implicit declaration we
|
||
would ordinarily do, so we don't lose
|
||
the actual built in type.
|
||
But print a diagnostic for the mismatch. */
|
||
ifobjc
|
||
if (objc_method_context
|
||
&& is_ivar (objc_ivar_chain, $1))
|
||
error ("Instance variable `%s' implicitly declared as function",
|
||
IDENTIFIER_POINTER (DECL_NAME ($$)));
|
||
else
|
||
end ifobjc
|
||
if (TREE_CODE ($$) != FUNCTION_DECL)
|
||
error ("`%s' implicitly declared as function",
|
||
IDENTIFIER_POINTER (DECL_NAME ($$)));
|
||
else if ((TYPE_MODE (TREE_TYPE (TREE_TYPE ($$)))
|
||
!= TYPE_MODE (integer_type_node))
|
||
&& (TREE_TYPE (TREE_TYPE ($$))
|
||
!= void_type_node))
|
||
pedwarn ("type mismatch in implicit declaration for built-in function `%s'",
|
||
IDENTIFIER_POINTER (DECL_NAME ($$)));
|
||
/* If it really returns void, change that to int. */
|
||
if (TREE_TYPE (TREE_TYPE ($$)) == void_type_node)
|
||
TREE_TYPE ($$)
|
||
= build_function_type (integer_type_node,
|
||
TYPE_ARG_TYPES (TREE_TYPE ($$)));
|
||
}
|
||
else
|
||
pedwarn ("built-in function `%s' used without declaration",
|
||
IDENTIFIER_POINTER (DECL_NAME ($$)));
|
||
|
||
/* Do what we would ordinarily do when a fn is used. */
|
||
assemble_external ($$);
|
||
TREE_USED ($$) = 1;
|
||
}
|
||
else
|
||
{
|
||
assemble_external ($$);
|
||
TREE_USED ($$) = 1;
|
||
ifobjc
|
||
/* we have a definition - still check if iVariable */
|
||
|
||
if (!objc_receiver_context
|
||
|| (objc_receiver_context
|
||
&& strcmp (IDENTIFIER_POINTER ($1), "super")))
|
||
{
|
||
tree decl;
|
||
|
||
if (objc_method_context
|
||
&& (decl = is_ivar (objc_ivar_chain, $1)))
|
||
{
|
||
if (IDENTIFIER_LOCAL_VALUE ($1))
|
||
warning ("local declaration of `%s' hides instance variable",
|
||
IDENTIFIER_POINTER ($1));
|
||
else
|
||
{
|
||
if (is_private (decl))
|
||
$$ = error_mark_node;
|
||
else
|
||
$$ = build_ivar_reference ($1);
|
||
}
|
||
}
|
||
}
|
||
else /* we have a message to super */
|
||
$$ = get_super_receiver ();
|
||
end ifobjc
|
||
}
|
||
|
||
if (TREE_CODE ($$) == CONST_DECL)
|
||
{
|
||
$$ = DECL_INITIAL ($$);
|
||
/* This is to prevent an enum whose value is 0
|
||
from being considered a null pointer constant. */
|
||
$$ = build1 (NOP_EXPR, TREE_TYPE ($$), $$);
|
||
TREE_CONSTANT ($$) = 1;
|
||
}
|
||
}
|
||
| CONSTANT
|
||
| string
|
||
{ $$ = combine_strings ($1); }
|
||
| '(' expr ')'
|
||
{ char class = TREE_CODE_CLASS (TREE_CODE ($2));
|
||
if (class == 'e' || class == '1'
|
||
|| class == '2' || class == '<')
|
||
C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
|
||
$$ = $2; }
|
||
| '(' error ')'
|
||
{ $$ = error_mark_node; }
|
||
| '('
|
||
{ if (current_function_decl == 0)
|
||
{
|
||
error ("braced-group within expression allowed only inside a function");
|
||
YYERROR;
|
||
}
|
||
/* We must force a BLOCK for this level
|
||
so that, if it is not expanded later,
|
||
there is a way to turn off the entire subtree of blocks
|
||
that are contained in it. */
|
||
keep_next_level ();
|
||
push_iterator_stack ();
|
||
push_label_level ();
|
||
$<ttype>$ = expand_start_stmt_expr (); }
|
||
compstmt ')'
|
||
{ tree rtl_exp;
|
||
if (pedantic)
|
||
pedwarn ("ANSI C forbids braced-groups within expressions");
|
||
pop_iterator_stack ();
|
||
pop_label_level ();
|
||
rtl_exp = expand_end_stmt_expr ($<ttype>2);
|
||
/* The statements have side effects, so the group does. */
|
||
TREE_SIDE_EFFECTS (rtl_exp) = 1;
|
||
|
||
if (TREE_CODE ($3) == BLOCK)
|
||
{
|
||
/* Make a BIND_EXPR for the BLOCK already made. */
|
||
$$ = build (BIND_EXPR, TREE_TYPE (rtl_exp),
|
||
NULL_TREE, rtl_exp, $3);
|
||
/* Remove the block from the tree at this point.
|
||
It gets put back at the proper place
|
||
when the BIND_EXPR is expanded. */
|
||
delete_block ($3);
|
||
}
|
||
else
|
||
$$ = $3;
|
||
}
|
||
| primary '(' exprlist ')' %prec '.'
|
||
{ $$ = build_function_call ($1, $3); }
|
||
| primary '[' expr ']' %prec '.'
|
||
{ $$ = build_array_ref ($1, $3); }
|
||
| primary '.' identifier
|
||
{
|
||
ifobjc
|
||
if (doing_objc_thang)
|
||
{
|
||
if (is_public ($1, $3))
|
||
$$ = build_component_ref ($1, $3);
|
||
else
|
||
$$ = error_mark_node;
|
||
}
|
||
else
|
||
end ifobjc
|
||
$$ = build_component_ref ($1, $3);
|
||
}
|
||
| primary POINTSAT identifier
|
||
{
|
||
tree expr = build_indirect_ref ($1, "->");
|
||
|
||
ifobjc
|
||
if (doing_objc_thang)
|
||
{
|
||
if (is_public (expr, $3))
|
||
$$ = build_component_ref (expr, $3);
|
||
else
|
||
$$ = 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
|
||
{ $$ = chainon ($1, $2); }
|
||
;
|
||
|
||
ifobjc
|
||
/* Produces an OBJC_STRING_CST with perhaps more OBJC_STRING_CSTs chained
|
||
onto it. */
|
||
objc_string:
|
||
OBJC_STRING
|
||
| objc_string OBJC_STRING
|
||
{ $$ = chainon ($1, $2); }
|
||
;
|
||
end ifobjc
|
||
|
||
old_style_parm_decls:
|
||
/* empty */
|
||
| datadecls
|
||
| datadecls ELLIPSIS
|
||
/* ... is used here to indicate a varargs function. */
|
||
{ c_mark_varargs ();
|
||
if (pedantic)
|
||
pedwarn ("ANSI 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:
|
||
typed_declspecs_no_prefix_attr setspecs initdecls ';'
|
||
{ current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
| declmods_no_prefix_attr setspecs notype_initdecls ';'
|
||
{ current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
| typed_declspecs_no_prefix_attr ';'
|
||
{ shadow_tag_warned ($1, 1);
|
||
pedwarn ("empty declaration"); }
|
||
| declmods_no_prefix_attr ';'
|
||
{ 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
|
||
{ }
|
||
;
|
||
|
||
decls:
|
||
lineno_decl
|
||
| errstmt
|
||
| decls lineno_decl
|
||
| lineno_decl errstmt
|
||
;
|
||
|
||
/* 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 */
|
||
{ $$ = suspend_momentary ();
|
||
pending_xref_error ();
|
||
declspec_stack = tree_cons (prefix_attributes,
|
||
current_declspecs,
|
||
declspec_stack);
|
||
split_specs_attrs ($<ttype>0,
|
||
¤t_declspecs, &prefix_attributes); }
|
||
;
|
||
|
||
/* ??? Yuck. See after_type_declarator. */
|
||
setattrs: /* empty */
|
||
{ prefix_attributes = chainon (prefix_attributes, $<ttype>0); }
|
||
;
|
||
|
||
decl:
|
||
typed_declspecs setspecs initdecls ';'
|
||
{ current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
| declmods setspecs notype_initdecls ';'
|
||
{ current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
| typed_declspecs setspecs nested_function
|
||
{ current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
| declmods setspecs notype_nested_function
|
||
{ current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
| typed_declspecs ';'
|
||
{ shadow_tag ($1); }
|
||
| declmods ';'
|
||
{ pedwarn ("empty declaration"); }
|
||
| extension decl
|
||
{ pedantic = $<itype>1; }
|
||
;
|
||
|
||
/* Declspecs which contain at least one type specifier or typedef name.
|
||
(Just `const' or `volatile' is not enough.)
|
||
A typedef'd name following these is taken as a name to be declared.
|
||
Declspecs have a non-NULL TREE_VALUE, attributes do not. */
|
||
|
||
typed_declspecs:
|
||
typespec reserved_declspecs
|
||
{ $$ = tree_cons (NULL_TREE, $1, $2); }
|
||
| declmods typespec reserved_declspecs
|
||
{ $$ = chainon ($3, tree_cons (NULL_TREE, $2, $1)); }
|
||
;
|
||
|
||
reserved_declspecs: /* empty */
|
||
{ $$ = NULL_TREE; }
|
||
| reserved_declspecs typespecqual_reserved
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1); }
|
||
| reserved_declspecs SCSPEC
|
||
{ if (extra_warnings)
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1); }
|
||
| reserved_declspecs attributes
|
||
{ $$ = tree_cons ($2, NULL_TREE, $1); }
|
||
;
|
||
|
||
typed_declspecs_no_prefix_attr:
|
||
typespec reserved_declspecs_no_prefix_attr
|
||
{ $$ = tree_cons (NULL_TREE, $1, $2); }
|
||
| declmods_no_prefix_attr typespec reserved_declspecs_no_prefix_attr
|
||
{ $$ = chainon ($3, tree_cons (NULL_TREE, $2, $1)); }
|
||
;
|
||
|
||
reserved_declspecs_no_prefix_attr:
|
||
/* empty */
|
||
{ $$ = NULL_TREE; }
|
||
| reserved_declspecs_no_prefix_attr typespecqual_reserved
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1); }
|
||
| reserved_declspecs_no_prefix_attr SCSPEC
|
||
{ if (extra_warnings)
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1); }
|
||
;
|
||
|
||
/* List of just storage classes, type modifiers, and prefix attributes.
|
||
A declaration can start with just this, but then it cannot be used
|
||
to redeclare a typedef-name.
|
||
Declspecs have a non-NULL TREE_VALUE, attributes do not. */
|
||
|
||
declmods:
|
||
declmods_no_prefix_attr
|
||
{ $$ = $1; }
|
||
| attributes
|
||
{ $$ = tree_cons ($1, NULL_TREE, NULL_TREE); }
|
||
| declmods declmods_no_prefix_attr
|
||
{ $$ = chainon ($2, $1); }
|
||
| declmods attributes
|
||
{ $$ = tree_cons ($2, NULL_TREE, $1); }
|
||
;
|
||
|
||
declmods_no_prefix_attr:
|
||
TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
|
||
TREE_STATIC ($$) = 1; }
|
||
| SCSPEC
|
||
{ $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
|
||
| declmods_no_prefix_attr TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = 1; }
|
||
| declmods_no_prefix_attr SCSPEC
|
||
{ if (extra_warnings && TREE_STATIC ($1))
|
||
warning ("`%s' is not at beginning of declaration",
|
||
IDENTIFIER_POINTER ($2));
|
||
$$ = tree_cons (NULL_TREE, $2, $1);
|
||
TREE_STATIC ($$) = TREE_STATIC ($1); }
|
||
;
|
||
|
||
|
||
/* Used instead of declspecs where storage classes are not allowed
|
||
(that is, for typenames and structure components).
|
||
Don't accept a typedef-name if anything but a modifier precedes it. */
|
||
|
||
typed_typespecs:
|
||
typespec reserved_typespecquals
|
||
{ $$ = tree_cons (NULL_TREE, $1, $2); }
|
||
| nonempty_type_quals typespec reserved_typespecquals
|
||
{ $$ = chainon ($3, tree_cons (NULL_TREE, $2, $1)); }
|
||
;
|
||
|
||
reserved_typespecquals: /* empty */
|
||
{ $$ = NULL_TREE; }
|
||
| reserved_typespecquals typespecqual_reserved
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1); }
|
||
;
|
||
|
||
/* A typespec (but not a type qualifier).
|
||
Once we have seen one of these in a declaration,
|
||
if a typedef name appears then it is being redeclared. */
|
||
|
||
typespec: TYPESPEC
|
||
| structsp
|
||
| TYPENAME
|
||
{ /* For a typedef name, record the meaning, not the name.
|
||
In case of `foo foo, bar;'. */
|
||
$$ = 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
|
||
{ $$ = get_object_reference ($1); }
|
||
end ifobjc
|
||
| TYPEOF '(' expr ')'
|
||
{ $$ = TREE_TYPE ($3); }
|
||
| TYPEOF '(' typename ')'
|
||
{ $$ = groktypename ($3); }
|
||
;
|
||
|
||
/* A typespec that is a reserved word, or a type qualifier. */
|
||
|
||
typespecqual_reserved: TYPESPEC
|
||
| TYPE_QUAL
|
||
| structsp
|
||
;
|
||
|
||
initdecls:
|
||
initdcl
|
||
| initdecls ',' initdcl
|
||
;
|
||
|
||
notype_initdecls:
|
||
notype_initdcl
|
||
| notype_initdecls ',' initdcl
|
||
;
|
||
|
||
maybeasm:
|
||
/* empty */
|
||
{ $$ = NULL_TREE; }
|
||
| ASM_KEYWORD '(' string ')'
|
||
{ if (TREE_CHAIN ($3)) $3 = combine_strings ($3);
|
||
$$ = $3;
|
||
}
|
||
;
|
||
|
||
initdcl:
|
||
declarator maybeasm maybe_attribute '='
|
||
{ $<ttype>$ = start_decl ($1, current_declspecs, 1,
|
||
$3, prefix_attributes);
|
||
start_init ($<ttype>$, $2, global_bindings_p ()); }
|
||
init
|
||
/* Note how the declaration of the variable is in effect while its init is parsed! */
|
||
{ finish_init ();
|
||
finish_decl ($<ttype>5, $6, $2); }
|
||
| declarator maybeasm maybe_attribute
|
||
{ tree d = start_decl ($1, current_declspecs, 0,
|
||
$3, prefix_attributes);
|
||
finish_decl (d, NULL_TREE, $2);
|
||
}
|
||
;
|
||
|
||
notype_initdcl:
|
||
notype_declarator maybeasm maybe_attribute '='
|
||
{ $<ttype>$ = start_decl ($1, current_declspecs, 1,
|
||
$3, prefix_attributes);
|
||
start_init ($<ttype>$, $2, global_bindings_p ()); }
|
||
init
|
||
/* Note how the declaration of the variable is in effect while its init is parsed! */
|
||
{ finish_init ();
|
||
decl_attributes ($<ttype>5, $3, prefix_attributes);
|
||
finish_decl ($<ttype>5, $6, $2); }
|
||
| notype_declarator maybeasm maybe_attribute
|
||
{ tree d = start_decl ($1, current_declspecs, 0,
|
||
$3, prefix_attributes);
|
||
finish_decl (d, NULL_TREE, $2); }
|
||
;
|
||
/* the * rules are dummies to accept the Apollo extended syntax
|
||
so that the header files compile. */
|
||
maybe_attribute:
|
||
/* empty */
|
||
{ $$ = 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 ')'
|
||
{ $$ = build_tree_list ($1, $3); }
|
||
;
|
||
|
||
/* This still leaves out most reserved keywords,
|
||
shouldn't we include them? */
|
||
|
||
any_word:
|
||
identifier
|
||
| SCSPEC
|
||
| TYPESPEC
|
||
| TYPE_QUAL
|
||
;
|
||
|
||
/* Initializers. `init' is the entry point. */
|
||
|
||
init:
|
||
expr_no_commas
|
||
| '{'
|
||
{ really_start_incremental_init (NULL_TREE);
|
||
/* Note that the call to clear_momentary
|
||
is in process_init_element. */
|
||
push_momentary (); }
|
||
initlist_maybe_comma '}'
|
||
{ $$ = pop_init_level (0);
|
||
if ($$ == error_mark_node
|
||
&& ! (yychar == STRING || yychar == CONSTANT))
|
||
pop_momentary ();
|
||
else
|
||
pop_momentary_nofree (); }
|
||
|
||
| error
|
||
{ $$ = error_mark_node; }
|
||
;
|
||
|
||
/* `initlist_maybe_comma' is the guts of an initializer in braces. */
|
||
initlist_maybe_comma:
|
||
/* empty */
|
||
{ if (pedantic)
|
||
pedwarn ("ANSI 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
|
||
| designator initval
|
||
| identifier ':'
|
||
{ set_init_label ($1); }
|
||
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); }
|
||
| '[' expr_no_commas ']'
|
||
{ set_init_index ($2, NULL_TREE); }
|
||
end ifc
|
||
;
|
||
|
||
nested_function:
|
||
declarator
|
||
{ push_c_function_context ();
|
||
if (! start_function (current_declspecs, $1,
|
||
prefix_attributes, NULL_TREE, 1))
|
||
{
|
||
pop_c_function_context ();
|
||
YYERROR1;
|
||
}
|
||
reinit_parse_for_function (); }
|
||
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. */
|
||
compstmt
|
||
{ finish_function (1);
|
||
pop_c_function_context (); }
|
||
;
|
||
|
||
notype_nested_function:
|
||
notype_declarator
|
||
{ push_c_function_context ();
|
||
if (! start_function (current_declspecs, $1,
|
||
prefix_attributes, NULL_TREE, 1))
|
||
{
|
||
pop_c_function_context ();
|
||
YYERROR1;
|
||
}
|
||
reinit_parse_for_function (); }
|
||
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. */
|
||
compstmt
|
||
{ finish_function (1);
|
||
pop_c_function_context (); }
|
||
;
|
||
|
||
/* 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:
|
||
'(' after_type_declarator ')'
|
||
{ $$ = $2; }
|
||
| after_type_declarator '(' parmlist_or_identifiers %prec '.'
|
||
{ $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
|
||
/* | after_type_declarator '(' error ')' %prec '.'
|
||
{ $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
|
||
poplevel (0, 0, 0); } */
|
||
| after_type_declarator '[' expr ']' %prec '.'
|
||
{ $$ = build_nt (ARRAY_REF, $1, $3); }
|
||
| after_type_declarator '[' ']' %prec '.'
|
||
{ $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
|
||
| '*' type_quals after_type_declarator %prec UNARY
|
||
{ $$ = make_pointer_declarator ($2, $3); }
|
||
/* ??? Yuck. setattrs is a quick hack. We can't use
|
||
prefix_attributes because $1 only applies to this
|
||
declarator. We assume setspecs has already been done.
|
||
setattrs also avoids 5 reduce/reduce conflicts (otherwise multiple
|
||
attributes could be recognized here or in `attributes'). */
|
||
| attributes setattrs after_type_declarator
|
||
{ $$ = $3; }
|
||
| TYPENAME
|
||
ifobjc
|
||
| OBJECTNAME
|
||
end ifobjc
|
||
;
|
||
|
||
/* Kinds of declarator that can appear in a parameter list
|
||
in addition to notype_declarator. This is like after_type_declarator
|
||
but does not allow a typedef name in parentheses as an identifier
|
||
(because it would conflict with a function with that typedef as arg). */
|
||
|
||
parm_declarator:
|
||
parm_declarator '(' parmlist_or_identifiers %prec '.'
|
||
{ $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
|
||
/* | parm_declarator '(' error ')' %prec '.'
|
||
{ $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
|
||
poplevel (0, 0, 0); } */
|
||
ifc
|
||
| parm_declarator '[' '*' ']' %prec '.'
|
||
{ $$ = build_nt (ARRAY_REF, $1, NULL_TREE);
|
||
if (! flag_isoc9x)
|
||
error ("`[*]' in parameter declaration only allowed in ISO C 9x");
|
||
}
|
||
end ifc
|
||
| parm_declarator '[' expr ']' %prec '.'
|
||
{ $$ = build_nt (ARRAY_REF, $1, $3); }
|
||
| parm_declarator '[' ']' %prec '.'
|
||
{ $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
|
||
| '*' type_quals parm_declarator %prec UNARY
|
||
{ $$ = make_pointer_declarator ($2, $3); }
|
||
/* ??? Yuck. setattrs is a quick hack. We can't use
|
||
prefix_attributes because $1 only applies to this
|
||
declarator. We assume setspecs has already been done.
|
||
setattrs also avoids 5 reduce/reduce conflicts (otherwise multiple
|
||
attributes could be recognized here or in `attributes'). */
|
||
| attributes setattrs parm_declarator
|
||
{ $$ = $3; }
|
||
| TYPENAME
|
||
;
|
||
|
||
/* 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); } */
|
||
| '(' notype_declarator ')'
|
||
{ $$ = $2; }
|
||
| '*' type_quals notype_declarator %prec UNARY
|
||
{ $$ = make_pointer_declarator ($2, $3); }
|
||
ifc
|
||
| notype_declarator '[' '*' ']' %prec '.'
|
||
{ $$ = build_nt (ARRAY_REF, $1, NULL_TREE);
|
||
if (! flag_isoc9x)
|
||
error ("`[*]' in parameter declaration only allowed in ISO C 9x");
|
||
}
|
||
end ifc
|
||
| notype_declarator '[' expr ']' %prec '.'
|
||
{ $$ = build_nt (ARRAY_REF, $1, $3); }
|
||
| notype_declarator '[' ']' %prec '.'
|
||
{ $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
|
||
/* ??? Yuck. setattrs is a quick hack. We can't use
|
||
prefix_attributes because $1 only applies to this
|
||
declarator. We assume setspecs has already been done.
|
||
setattrs also avoids 5 reduce/reduce conflicts (otherwise multiple
|
||
attributes could be recognized here or in `attributes'). */
|
||
| attributes setattrs notype_declarator
|
||
{ $$ = $3; }
|
||
| 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:
|
||
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
|
||
{ $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
|
||
$3, chainon ($1, $5));
|
||
}
|
||
| struct_head identifier
|
||
{ $$ = xref_tag (RECORD_TYPE, $2); }
|
||
| 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
|
||
{ $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
|
||
$3, chainon ($1, $5));
|
||
}
|
||
| union_head identifier
|
||
{ $$ = xref_tag (UNION_TYPE, $2); }
|
||
| enum_head identifier '{'
|
||
{ $<itype>3 = suspend_momentary ();
|
||
$$ = start_enum ($2); }
|
||
enumlist maybecomma_warn '}' maybe_attribute
|
||
{ $$= finish_enum ($<ttype>4, nreverse ($5), chainon ($1, $8));
|
||
resume_momentary ($<itype>3); }
|
||
| enum_head '{'
|
||
{ $<itype>2 = suspend_momentary ();
|
||
$$ = start_enum (NULL_TREE); }
|
||
enumlist maybecomma_warn '}' maybe_attribute
|
||
{ $$= finish_enum ($<ttype>3, nreverse ($4), chainon ($1, $7));
|
||
resume_momentary ($<itype>2); }
|
||
| enum_head identifier
|
||
{ $$ = xref_tag (ENUMERAL_TYPE, $2); }
|
||
;
|
||
|
||
maybecomma:
|
||
/* empty */
|
||
| ','
|
||
;
|
||
|
||
maybecomma_warn:
|
||
/* empty */
|
||
| ','
|
||
{ if (pedantic && ! flag_isoc9x)
|
||
pedwarn ("comma at end of enumerator list"); }
|
||
;
|
||
|
||
component_decl_list:
|
||
component_decl_list2
|
||
{ $$ = $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));
|
||
$$ = NULL_TREE;
|
||
}
|
||
}
|
||
end ifobjc
|
||
;
|
||
|
||
/* There is a shift-reduce conflict here, because `components' may
|
||
start with a `typename'. It happens that shifting (the default resolution)
|
||
does the right thing, because it treats the `typename' as part of
|
||
a `typed_typespecs'.
|
||
|
||
It is possible that this same technique would allow the distinction
|
||
between `notype_initdecls' and `initdecls' to be eliminated.
|
||
But I am being cautious and not trying it. */
|
||
|
||
component_decl:
|
||
typed_typespecs setspecs components
|
||
{ $$ = $3;
|
||
current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
| typed_typespecs
|
||
{ if (pedantic)
|
||
pedwarn ("ANSI C forbids member declarations with no members");
|
||
shadow_tag($1);
|
||
$$ = NULL_TREE; }
|
||
| nonempty_type_quals setspecs components
|
||
{ $$ = $3;
|
||
current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
| nonempty_type_quals
|
||
{ if (pedantic)
|
||
pedwarn ("ANSI C forbids member declarations with no members");
|
||
shadow_tag($1);
|
||
$$ = NULL_TREE; }
|
||
| error
|
||
{ $$ = NULL_TREE; }
|
||
| extension component_decl
|
||
{ $$ = $2;
|
||
pedantic = $<itype>1; }
|
||
;
|
||
|
||
components:
|
||
component_declarator
|
||
| components ',' component_declarator
|
||
{ $$ = chainon ($1, $3); }
|
||
;
|
||
|
||
component_declarator:
|
||
save_filename save_lineno declarator maybe_attribute
|
||
{ $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
|
||
decl_attributes ($$, $4, prefix_attributes); }
|
||
| save_filename save_lineno
|
||
declarator ':' expr_no_commas maybe_attribute
|
||
{ $$ = grokfield ($1, $2, $3, current_declspecs, $5);
|
||
decl_attributes ($$, $6, prefix_attributes); }
|
||
| save_filename save_lineno ':' expr_no_commas maybe_attribute
|
||
{ $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
|
||
decl_attributes ($$, $5, prefix_attributes); }
|
||
;
|
||
|
||
/* 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
|
||
{ $$ = build_enumerator ($1, $3); }
|
||
;
|
||
|
||
typename:
|
||
typed_typespecs absdcl
|
||
{ $$ = build_tree_list ($1, $2); }
|
||
| nonempty_type_quals absdcl
|
||
{ $$ = build_tree_list ($1, $2); }
|
||
;
|
||
|
||
absdcl: /* an absolute declarator */
|
||
/* empty */
|
||
{ $$ = NULL_TREE; }
|
||
| absdcl1
|
||
;
|
||
|
||
nonempty_type_quals:
|
||
TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
|
||
| nonempty_type_quals TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1); }
|
||
;
|
||
|
||
type_quals:
|
||
/* empty */
|
||
{ $$ = NULL_TREE; }
|
||
| type_quals TYPE_QUAL
|
||
{ $$ = tree_cons (NULL_TREE, $2, $1); }
|
||
;
|
||
|
||
absdcl1: /* a nonempty absolute declarator */
|
||
'(' absdcl1 ')'
|
||
{ $$ = $2; }
|
||
/* `(typedef)1' is `int'. */
|
||
| '*' type_quals absdcl1 %prec UNARY
|
||
{ $$ = make_pointer_declarator ($2, $3); }
|
||
| '*' type_quals %prec UNARY
|
||
{ $$ = make_pointer_declarator ($2, NULL_TREE); }
|
||
| absdcl1 '(' parmlist %prec '.'
|
||
{ $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
|
||
| absdcl1 '[' expr ']' %prec '.'
|
||
{ $$ = build_nt (ARRAY_REF, $1, $3); }
|
||
| absdcl1 '[' ']' %prec '.'
|
||
{ $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
|
||
| '(' parmlist %prec '.'
|
||
{ $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
|
||
| '[' expr ']' %prec '.'
|
||
{ $$ = build_nt (ARRAY_REF, NULL_TREE, $2); }
|
||
| '[' ']' %prec '.'
|
||
{ $$ = build_nt (ARRAY_REF, NULL_TREE, NULL_TREE); }
|
||
/* ??? It appears we have to support attributes here, however
|
||
using prefix_attributes is wrong. */
|
||
| attributes setattrs absdcl1
|
||
{ $$ = $3; }
|
||
;
|
||
|
||
/* at least one statement, the first of which parses without error. */
|
||
/* stmts is used only after decls, so an invalid first statement
|
||
is actually regarded as an invalid decl and part of the decls. */
|
||
|
||
stmts:
|
||
lineno_stmt_or_labels
|
||
{
|
||
if (pedantic && $1)
|
||
pedwarn ("ANSI C forbids label at end of compound statement");
|
||
}
|
||
;
|
||
|
||
lineno_stmt_or_labels:
|
||
lineno_stmt_or_label
|
||
| lineno_stmt_or_labels lineno_stmt_or_label
|
||
{ $$ = $2; }
|
||
| lineno_stmt_or_labels errstmt
|
||
{ $$ = 0; }
|
||
;
|
||
|
||
xstmts:
|
||
/* empty */
|
||
| stmts
|
||
;
|
||
|
||
errstmt: error ';'
|
||
;
|
||
|
||
pushlevel: /* empty */
|
||
{ emit_line_note (input_filename, lineno);
|
||
pushlevel (0);
|
||
clear_last_expr ();
|
||
push_momentary ();
|
||
expand_start_bindings (0);
|
||
ifobjc
|
||
if (objc_method_context)
|
||
add_objc_decls ();
|
||
end ifobjc
|
||
}
|
||
;
|
||
|
||
/* Read zero or more forward-declarations for labels
|
||
that nested functions can jump to. */
|
||
maybe_label_decls:
|
||
/* empty */
|
||
| label_decls
|
||
{ if (pedantic)
|
||
pedwarn ("ANSI 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;
|
||
declare_nonlocal_label (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++; }
|
||
|
||
compstmt: compstmt_start '}'
|
||
{ $$ = convert (void_type_node, integer_zero_node); }
|
||
| compstmt_start pushlevel maybe_label_decls decls xstmts '}'
|
||
{ emit_line_note (input_filename, lineno);
|
||
expand_end_bindings (getdecls (), 1, 0);
|
||
$$ = poplevel (1, 1, 0);
|
||
if (yychar == CONSTANT || yychar == STRING)
|
||
pop_momentary_nofree ();
|
||
else
|
||
pop_momentary (); }
|
||
| compstmt_start pushlevel maybe_label_decls error '}'
|
||
{ emit_line_note (input_filename, lineno);
|
||
expand_end_bindings (getdecls (), kept_level_p (), 0);
|
||
$$ = poplevel (kept_level_p (), 0, 0);
|
||
if (yychar == CONSTANT || yychar == STRING)
|
||
pop_momentary_nofree ();
|
||
else
|
||
pop_momentary (); }
|
||
| compstmt_start pushlevel maybe_label_decls stmts '}'
|
||
{ emit_line_note (input_filename, lineno);
|
||
expand_end_bindings (getdecls (), kept_level_p (), 0);
|
||
$$ = poplevel (kept_level_p (), 0, 0);
|
||
if (yychar == CONSTANT || yychar == STRING)
|
||
pop_momentary_nofree ();
|
||
else
|
||
pop_momentary (); }
|
||
;
|
||
|
||
/* Value is number of statements counted as of the closeparen. */
|
||
simple_if:
|
||
if_prefix lineno_labeled_stmt
|
||
/* 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:
|
||
IF '(' expr ')'
|
||
{ emit_line_note ($<filename>-1, $<lineno>0);
|
||
c_expand_start_cond (truthvalue_conversion ($3), 0,
|
||
compstmt_count);
|
||
$<itype>$ = stmt_count;
|
||
if_stmt_file = $<filename>-1;
|
||
if_stmt_line = $<lineno>0;
|
||
position_after_white_space (); }
|
||
;
|
||
|
||
/* This is a subroutine of stmt.
|
||
It is used twice, once for valid DO statements
|
||
and once for catching errors in parsing the end test. */
|
||
do_stmt_start:
|
||
DO
|
||
{ stmt_count++;
|
||
compstmt_count++;
|
||
emit_line_note ($<filename>-1, $<lineno>0);
|
||
/* See comment in `while' alternative, above. */
|
||
emit_nop ();
|
||
expand_start_loop_continue_elsewhere (1);
|
||
position_after_white_space (); }
|
||
lineno_labeled_stmt WHILE
|
||
{ expand_loop_continue_here (); }
|
||
;
|
||
|
||
save_filename:
|
||
{ $$ = input_filename; }
|
||
;
|
||
|
||
save_lineno:
|
||
{ $$ = lineno; }
|
||
;
|
||
|
||
lineno_labeled_stmt:
|
||
save_filename save_lineno stmt
|
||
{ }
|
||
/* | save_filename save_lineno error
|
||
{ }
|
||
*/
|
||
| save_filename save_lineno label lineno_labeled_stmt
|
||
{ }
|
||
;
|
||
|
||
lineno_stmt_or_label:
|
||
save_filename save_lineno stmt_or_label
|
||
{ $$ = $3; }
|
||
;
|
||
|
||
stmt_or_label:
|
||
stmt
|
||
{ $$ = 0; }
|
||
| label
|
||
{ $$ = 1; }
|
||
;
|
||
|
||
/* Parse a single real statement, not including any labels. */
|
||
stmt:
|
||
compstmt
|
||
{ stmt_count++; }
|
||
| all_iter_stmt
|
||
| expr ';'
|
||
{ stmt_count++;
|
||
emit_line_note ($<filename>-1, $<lineno>0);
|
||
/* It appears that this should not be done--that a non-lvalue array
|
||
shouldn't get an error if the value isn't used.
|
||
Section 3.2.2.1 says that an array lvalue gets converted to a pointer
|
||
if it appears as a top-level expression,
|
||
but says nothing about non-lvalue arrays. */
|
||
#if 0
|
||
/* Call default_conversion to get an error
|
||
on referring to a register array if pedantic. */
|
||
if (TREE_CODE (TREE_TYPE ($1)) == ARRAY_TYPE
|
||
|| TREE_CODE (TREE_TYPE ($1)) == FUNCTION_TYPE)
|
||
$1 = default_conversion ($1);
|
||
#endif
|
||
iterator_expand ($1);
|
||
clear_momentary (); }
|
||
| simple_if ELSE
|
||
{ c_expand_start_else ();
|
||
$<itype>1 = stmt_count;
|
||
position_after_white_space (); }
|
||
lineno_labeled_stmt
|
||
{ 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 (); }
|
||
| WHILE
|
||
{ stmt_count++;
|
||
emit_line_note ($<filename>-1, $<lineno>0);
|
||
/* The emit_nop used to come before emit_line_note,
|
||
but that made the nop seem like part of the preceding line.
|
||
And that was confusing when the preceding line was
|
||
inside of an if statement and was not really executed.
|
||
I think it ought to work to put the nop after the line number.
|
||
We will see. --rms, July 15, 1991. */
|
||
emit_nop (); }
|
||
'(' expr ')'
|
||
{ /* Don't start the loop till we have succeeded
|
||
in parsing the end test. This is to make sure
|
||
that we end every loop we start. */
|
||
expand_start_loop (1);
|
||
emit_line_note (input_filename, lineno);
|
||
expand_exit_loop_if_false (NULL_PTR,
|
||
truthvalue_conversion ($4));
|
||
position_after_white_space (); }
|
||
lineno_labeled_stmt
|
||
{ expand_end_loop (); }
|
||
| do_stmt_start
|
||
'(' expr ')' ';'
|
||
{ emit_line_note (input_filename, lineno);
|
||
expand_exit_loop_if_false (NULL_PTR,
|
||
truthvalue_conversion ($3));
|
||
expand_end_loop ();
|
||
clear_momentary (); }
|
||
/* This rule is needed to make sure we end every loop we start. */
|
||
| do_stmt_start error
|
||
{ expand_end_loop ();
|
||
clear_momentary (); }
|
||
| FOR
|
||
'(' xexpr ';'
|
||
{ stmt_count++;
|
||
emit_line_note ($<filename>-1, $<lineno>0);
|
||
/* See comment in `while' alternative, above. */
|
||
emit_nop ();
|
||
if ($3) c_expand_expr_stmt ($3);
|
||
/* Next step is to call expand_start_loop_continue_elsewhere,
|
||
but wait till after we parse the entire for (...).
|
||
Otherwise, invalid input might cause us to call that
|
||
fn without calling expand_end_loop. */
|
||
}
|
||
xexpr ';'
|
||
/* Can't emit now; wait till after expand_start_loop... */
|
||
{ $<lineno>7 = lineno;
|
||
$<filename>$ = input_filename; }
|
||
xexpr ')'
|
||
{
|
||
/* Start the loop. Doing this after parsing
|
||
all the expressions ensures we will end the loop. */
|
||
expand_start_loop_continue_elsewhere (1);
|
||
/* Emit the end-test, with a line number. */
|
||
emit_line_note ($<filename>8, $<lineno>7);
|
||
if ($6)
|
||
expand_exit_loop_if_false (NULL_PTR,
|
||
truthvalue_conversion ($6));
|
||
/* Don't let the tree nodes for $9 be discarded by
|
||
clear_momentary during the parsing of the next stmt. */
|
||
push_momentary ();
|
||
$<lineno>7 = lineno;
|
||
$<filename>8 = input_filename;
|
||
position_after_white_space (); }
|
||
lineno_labeled_stmt
|
||
{ /* Emit the increment expression, with a line number. */
|
||
emit_line_note ($<filename>8, $<lineno>7);
|
||
expand_loop_continue_here ();
|
||
if ($9)
|
||
c_expand_expr_stmt ($9);
|
||
if (yychar == CONSTANT || yychar == STRING)
|
||
pop_momentary_nofree ();
|
||
else
|
||
pop_momentary ();
|
||
expand_end_loop (); }
|
||
| SWITCH '(' expr ')'
|
||
{ stmt_count++;
|
||
emit_line_note ($<filename>-1, $<lineno>0);
|
||
c_expand_start_case ($3);
|
||
/* Don't let the tree nodes for $3 be discarded by
|
||
clear_momentary during the parsing of the next stmt. */
|
||
push_momentary ();
|
||
position_after_white_space (); }
|
||
lineno_labeled_stmt
|
||
{ expand_end_case ($3);
|
||
if (yychar == CONSTANT || yychar == STRING)
|
||
pop_momentary_nofree ();
|
||
else
|
||
pop_momentary (); }
|
||
| BREAK ';'
|
||
{ stmt_count++;
|
||
emit_line_note ($<filename>-1, $<lineno>0);
|
||
if ( ! expand_exit_something ())
|
||
error ("break statement not within loop or switch"); }
|
||
| CONTINUE ';'
|
||
{ stmt_count++;
|
||
emit_line_note ($<filename>-1, $<lineno>0);
|
||
if (! expand_continue_loop (NULL_PTR))
|
||
error ("continue statement not within a loop"); }
|
||
| RETURN ';'
|
||
{ stmt_count++;
|
||
emit_line_note ($<filename>-1, $<lineno>0);
|
||
c_expand_return (NULL_TREE); }
|
||
| RETURN expr ';'
|
||
{ stmt_count++;
|
||
emit_line_note ($<filename>-1, $<lineno>0);
|
||
c_expand_return ($2); }
|
||
| ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
|
||
{ stmt_count++;
|
||
emit_line_note ($<filename>-1, $<lineno>0);
|
||
STRIP_NOPS ($4);
|
||
if ((TREE_CODE ($4) == ADDR_EXPR
|
||
&& TREE_CODE (TREE_OPERAND ($4, 0)) == STRING_CST)
|
||
|| TREE_CODE ($4) == STRING_CST)
|
||
expand_asm ($4);
|
||
else
|
||
error ("argument of `asm' is not a constant string"); }
|
||
/* This is the case with just output operands. */
|
||
| ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
|
||
{ stmt_count++;
|
||
emit_line_note ($<filename>-1, $<lineno>0);
|
||
c_expand_asm_operands ($4, $6, NULL_TREE, NULL_TREE,
|
||
$2 == ridpointers[(int)RID_VOLATILE],
|
||
input_filename, lineno); }
|
||
/* This is the case with input operands as well. */
|
||
| ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':' asm_operands ')' ';'
|
||
{ stmt_count++;
|
||
emit_line_note ($<filename>-1, $<lineno>0);
|
||
c_expand_asm_operands ($4, $6, $8, NULL_TREE,
|
||
$2 == ridpointers[(int)RID_VOLATILE],
|
||
input_filename, lineno); }
|
||
/* This is the case with clobbered registers as well. */
|
||
| ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
|
||
asm_operands ':' asm_clobbers ')' ';'
|
||
{ stmt_count++;
|
||
emit_line_note ($<filename>-1, $<lineno>0);
|
||
c_expand_asm_operands ($4, $6, $8, $10,
|
||
$2 == ridpointers[(int)RID_VOLATILE],
|
||
input_filename, lineno); }
|
||
| GOTO identifier ';'
|
||
{ tree decl;
|
||
stmt_count++;
|
||
emit_line_note ($<filename>-1, $<lineno>0);
|
||
decl = lookup_label ($2);
|
||
if (decl != 0)
|
||
{
|
||
TREE_USED (decl) = 1;
|
||
expand_goto (decl);
|
||
}
|
||
}
|
||
| GOTO '*' expr ';'
|
||
{ if (pedantic)
|
||
pedwarn ("ANSI C forbids `goto *expr;'");
|
||
stmt_count++;
|
||
emit_line_note ($<filename>-1, $<lineno>0);
|
||
expand_computed_goto (convert (ptr_type_node, $3)); }
|
||
| ';'
|
||
;
|
||
|
||
all_iter_stmt:
|
||
all_iter_stmt_simple
|
||
/* | all_iter_stmt_with_decl */
|
||
;
|
||
|
||
all_iter_stmt_simple:
|
||
FOR '(' primary ')'
|
||
{
|
||
/* The value returned by this action is */
|
||
/* 1 if everything is OK */
|
||
/* 0 in case of error or already bound iterator */
|
||
|
||
$<itype>$ = 0;
|
||
if (TREE_CODE ($3) != VAR_DECL)
|
||
error ("invalid `for (ITERATOR)' syntax");
|
||
else if (! ITERATOR_P ($3))
|
||
error ("`%s' is not an iterator",
|
||
IDENTIFIER_POINTER (DECL_NAME ($3)));
|
||
else if (ITERATOR_BOUND_P ($3))
|
||
error ("`for (%s)' inside expansion of same iterator",
|
||
IDENTIFIER_POINTER (DECL_NAME ($3)));
|
||
else
|
||
{
|
||
$<itype>$ = 1;
|
||
iterator_for_loop_start ($3);
|
||
}
|
||
}
|
||
lineno_labeled_stmt
|
||
{
|
||
if ($<itype>5)
|
||
iterator_for_loop_end ($3);
|
||
}
|
||
|
||
/* This really should allow any kind of declaration,
|
||
for generality. Fix it before turning it back on.
|
||
|
||
all_iter_stmt_with_decl:
|
||
FOR '(' ITERATOR pushlevel setspecs iterator_spec ')'
|
||
{
|
||
*/ /* The value returned by this action is */
|
||
/* 1 if everything is OK */
|
||
/* 0 in case of error or already bound iterator */
|
||
/*
|
||
iterator_for_loop_start ($6);
|
||
}
|
||
lineno_labeled_stmt
|
||
{
|
||
iterator_for_loop_end ($6);
|
||
emit_line_note (input_filename, lineno);
|
||
expand_end_bindings (getdecls (), 1, 0);
|
||
$<ttype>$ = poplevel (1, 1, 0);
|
||
if (yychar == CONSTANT || yychar == STRING)
|
||
pop_momentary_nofree ();
|
||
else
|
||
pop_momentary ();
|
||
}
|
||
*/
|
||
|
||
/* 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 ':'
|
||
{ register tree value = check_case_value ($2);
|
||
register tree label
|
||
= build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
|
||
|
||
stmt_count++;
|
||
|
||
if (value != error_mark_node)
|
||
{
|
||
tree duplicate;
|
||
int success;
|
||
|
||
if (pedantic && ! INTEGRAL_TYPE_P (TREE_TYPE (value)))
|
||
pedwarn ("label must have integral type in ANSI C");
|
||
|
||
success = pushcase (value, convert_and_check,
|
||
label, &duplicate);
|
||
|
||
if (success == 1)
|
||
error ("case label not within a switch statement");
|
||
else if (success == 2)
|
||
{
|
||
error ("duplicate case value");
|
||
error_with_decl (duplicate, "this is the first entry for that value");
|
||
}
|
||
else if (success == 3)
|
||
warning ("case value out of range");
|
||
else if (success == 5)
|
||
error ("case label within scope of cleanup or variable array");
|
||
}
|
||
position_after_white_space (); }
|
||
| CASE expr_no_commas ELLIPSIS expr_no_commas ':'
|
||
{ register tree value1 = check_case_value ($2);
|
||
register tree value2 = check_case_value ($4);
|
||
register tree label
|
||
= build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
|
||
|
||
if (pedantic)
|
||
pedwarn ("ANSI C forbids case ranges");
|
||
stmt_count++;
|
||
|
||
if (value1 != error_mark_node && value2 != error_mark_node)
|
||
{
|
||
tree duplicate;
|
||
int success = pushcase_range (value1, value2,
|
||
convert_and_check, label,
|
||
&duplicate);
|
||
if (success == 1)
|
||
error ("case label not within a switch statement");
|
||
else if (success == 2)
|
||
{
|
||
error ("duplicate case value");
|
||
error_with_decl (duplicate, "this is the first entry for that value");
|
||
}
|
||
else if (success == 3)
|
||
warning ("case value out of range");
|
||
else if (success == 4)
|
||
warning ("empty case range");
|
||
else if (success == 5)
|
||
error ("case label within scope of cleanup or variable array");
|
||
}
|
||
position_after_white_space (); }
|
||
| DEFAULT ':'
|
||
{
|
||
tree duplicate;
|
||
register tree label
|
||
= build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
|
||
int success = pushcase (NULL_TREE, 0, label, &duplicate);
|
||
stmt_count++;
|
||
if (success == 1)
|
||
error ("default label not within a switch statement");
|
||
else if (success == 2)
|
||
{
|
||
error ("multiple default labels in one switch");
|
||
error_with_decl (duplicate, "this is the first default label");
|
||
}
|
||
position_after_white_space (); }
|
||
| identifier ':' maybe_attribute
|
||
{ tree label = define_label (input_filename, lineno, $1);
|
||
stmt_count++;
|
||
emit_nop ();
|
||
if (label)
|
||
{
|
||
expand_label (label);
|
||
decl_attributes (label, $3, NULL_TREE);
|
||
}
|
||
position_after_white_space (); }
|
||
;
|
||
|
||
/* 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 ($1, $3); }
|
||
;
|
||
|
||
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. */
|
||
parmlist:
|
||
{ pushlevel (0);
|
||
clear_parm_order ();
|
||
declare_parm_level (0); }
|
||
parmlist_1
|
||
{ $$ = $2;
|
||
parmlist_tags_warning ();
|
||
poplevel (0, 0, 0); }
|
||
;
|
||
|
||
parmlist_1:
|
||
parmlist_2 ')'
|
||
| parms ';'
|
||
{ tree parm;
|
||
if (pedantic)
|
||
pedwarn ("ANSI C forbids forward parameter declarations");
|
||
/* Mark the forward decls as such. */
|
||
for (parm = getdecls (); parm; parm = TREE_CHAIN (parm))
|
||
TREE_ASM_WRITTEN (parm) = 1;
|
||
clear_parm_order (); }
|
||
parmlist_1
|
||
{ $$ = $4; }
|
||
| 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
|
||
{ $$ = get_parm_info (0);
|
||
/* Gcc used to allow this as an extension. However, it does
|
||
not work for all targets, and thus has been disabled.
|
||
Also, since func (...) and func () are indistinguishable,
|
||
it caused problems with the code in expand_builtin which
|
||
tries to verify that BUILT_IN_NEXT_ARG is being used
|
||
correctly. */
|
||
error ("ANSI C requires a named argument before `...'");
|
||
}
|
||
| parms
|
||
{ $$ = get_parm_info (1); }
|
||
| parms ',' ELLIPSIS
|
||
{ $$ = get_parm_info (0); }
|
||
;
|
||
|
||
parms:
|
||
parm
|
||
{ push_parm_decl ($1); }
|
||
| parms ',' parm
|
||
{ push_parm_decl ($3); }
|
||
;
|
||
|
||
/* A single parameter declaration or parameter type name,
|
||
as found in a parmlist. */
|
||
parm:
|
||
typed_declspecs setspecs parm_declarator maybe_attribute
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
$3),
|
||
build_tree_list (prefix_attributes,
|
||
$4));
|
||
current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
| typed_declspecs setspecs notype_declarator maybe_attribute
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
$3),
|
||
build_tree_list (prefix_attributes,
|
||
$4));
|
||
current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
| typed_declspecs setspecs absdcl maybe_attribute
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
$3),
|
||
build_tree_list (prefix_attributes,
|
||
$4));
|
||
current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
| declmods setspecs notype_declarator maybe_attribute
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
$3),
|
||
build_tree_list (prefix_attributes,
|
||
$4));
|
||
current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
|
||
| declmods setspecs absdcl maybe_attribute
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
$3),
|
||
build_tree_list (prefix_attributes,
|
||
$4));
|
||
current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
;
|
||
|
||
/* 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:
|
||
{ pushlevel (0);
|
||
clear_parm_order ();
|
||
declare_parm_level (1); }
|
||
parmlist_or_identifiers_1
|
||
{ $$ = $2;
|
||
parmlist_tags_warning ();
|
||
poplevel (0, 0, 0); }
|
||
;
|
||
|
||
parmlist_or_identifiers_1:
|
||
parmlist_1
|
||
| identifiers ')'
|
||
{ tree t;
|
||
for (t = $1; t; t = TREE_CHAIN (t))
|
||
if (TREE_VALUE (t) == NULL_TREE)
|
||
error ("`...' in old-style identifier list");
|
||
$$ = tree_cons (NULL_TREE, NULL_TREE, $1); }
|
||
;
|
||
|
||
/* 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
|
||
{ $<itype>$ = pedantic;
|
||
pedantic = 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
|
||
{
|
||
remember_protocol_qualifiers ();
|
||
objc_interface_context
|
||
= start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
|
||
}
|
||
methodprotolist END
|
||
{
|
||
forget_protocol_qualifiers();
|
||
finish_protocol(objc_interface_context);
|
||
objc_interface_context = NULL_TREE;
|
||
}
|
||
;
|
||
|
||
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 */
|
||
{
|
||
$$ = NULL_TREE;
|
||
}
|
||
| ivar_decls ivar_decl ';'
|
||
| ivar_decls ';'
|
||
{
|
||
if (pedantic)
|
||
pedwarn ("extra semicolon in struct or union specified");
|
||
}
|
||
;
|
||
|
||
|
||
/* There is a shift-reduce conflict here, because `components' may
|
||
start with a `typename'. It happens that shifting (the default resolution)
|
||
does the right thing, because it treats the `typename' as part of
|
||
a `typed_typespecs'.
|
||
|
||
It is possible that this same technique would allow the distinction
|
||
between `notype_initdecls' and `initdecls' to be eliminated.
|
||
But I am being cautious and not trying it. */
|
||
|
||
ivar_decl:
|
||
typed_typespecs setspecs ivars
|
||
{ $$ = $3;
|
||
current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
| nonempty_type_quals setspecs ivars
|
||
{ $$ = $3;
|
||
current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
| error
|
||
{ $$ = NULL_TREE; }
|
||
;
|
||
|
||
ivars:
|
||
/* empty */
|
||
{ $$ = NULL_TREE; }
|
||
| ivar_declarator
|
||
| ivars ',' ivar_declarator
|
||
;
|
||
|
||
ivar_declarator:
|
||
declarator
|
||
{
|
||
$$ = 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);
|
||
}
|
||
;
|
||
|
||
methoddef:
|
||
'+'
|
||
{
|
||
remember_protocol_qualifiers ();
|
||
if (objc_implementation_context)
|
||
objc_inherit_code = CLASS_METHOD_DECL;
|
||
else
|
||
fatal ("method definition not in class context");
|
||
}
|
||
methoddecl
|
||
{
|
||
forget_protocol_qualifiers ();
|
||
add_class_method (objc_implementation_context, $3);
|
||
start_method_def ($3);
|
||
objc_method_context = $3;
|
||
}
|
||
optarglist
|
||
{
|
||
continue_method_def ();
|
||
}
|
||
compstmt_or_error
|
||
{
|
||
finish_method_def ();
|
||
objc_method_context = NULL_TREE;
|
||
}
|
||
|
||
| '-'
|
||
{
|
||
remember_protocol_qualifiers ();
|
||
if (objc_implementation_context)
|
||
objc_inherit_code = INSTANCE_METHOD_DECL;
|
||
else
|
||
fatal ("method definition not in class context");
|
||
}
|
||
methoddecl
|
||
{
|
||
forget_protocol_qualifiers ();
|
||
add_instance_method (objc_implementation_context, $3);
|
||
start_method_def ($3);
|
||
objc_method_context = $3;
|
||
}
|
||
optarglist
|
||
{
|
||
continue_method_def ();
|
||
}
|
||
compstmt_or_error
|
||
{
|
||
finish_method_def ();
|
||
objc_method_context = NULL_TREE;
|
||
}
|
||
;
|
||
|
||
/* 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:
|
||
'+'
|
||
{
|
||
/* Remember protocol qualifiers in prototypes. */
|
||
remember_protocol_qualifiers ();
|
||
objc_inherit_code = CLASS_METHOD_DECL;
|
||
}
|
||
methoddecl
|
||
{
|
||
/* Forget protocol qualifiers here. */
|
||
forget_protocol_qualifiers ();
|
||
add_class_method (objc_interface_context, $3);
|
||
}
|
||
semi_or_error
|
||
|
||
| '-'
|
||
{
|
||
/* Remember protocol qualifiers in prototypes. */
|
||
remember_protocol_qualifiers ();
|
||
objc_inherit_code = INSTANCE_METHOD_DECL;
|
||
}
|
||
methoddecl
|
||
{
|
||
/* Forget protocol qualifiers here. */
|
||
forget_protocol_qualifiers ();
|
||
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:
|
||
typed_declspecs setspecs myparms ';'
|
||
{ current_declspecs = TREE_VALUE (declspec_stack);
|
||
prefix_attributes = TREE_PURPOSE (declspec_stack);
|
||
declspec_stack = TREE_CHAIN (declspec_stack);
|
||
resume_momentary ($2); }
|
||
| typed_declspecs ';'
|
||
{ shadow_tag ($1); }
|
||
| declmods ';'
|
||
{ 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
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
$1),
|
||
build_tree_list (prefix_attributes,
|
||
$2)); }
|
||
| notype_declarator maybe_attribute
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
$1),
|
||
build_tree_list (prefix_attributes,
|
||
$2)); }
|
||
| absdcl maybe_attribute
|
||
{ $$ = build_tree_list (build_tree_list (current_declspecs,
|
||
$1),
|
||
build_tree_list (prefix_attributes,
|
||
$2)); }
|
||
;
|
||
|
||
optparmlist:
|
||
/* empty */
|
||
{
|
||
$$ = NULL_TREE;
|
||
}
|
||
| ',' ELLIPSIS
|
||
{
|
||
/* oh what a kludge! */
|
||
$$ = (tree)1;
|
||
}
|
||
| ','
|
||
{
|
||
pushlevel (0);
|
||
}
|
||
parmlist_2
|
||
{
|
||
/* returns a tree list node generated by get_parm_info */
|
||
$$ = $3;
|
||
poplevel (0, 0, 0);
|
||
}
|
||
;
|
||
|
||
unaryselector:
|
||
selector
|
||
;
|
||
|
||
keywordselector:
|
||
keyworddecl
|
||
|
||
| keywordselector keyworddecl
|
||
{
|
||
$$ = chainon ($1, $2);
|
||
}
|
||
;
|
||
|
||
selector:
|
||
IDENTIFIER
|
||
| TYPENAME
|
||
| OBJECTNAME
|
||
| reservedwords
|
||
;
|
||
|
||
reservedwords:
|
||
ENUM { $$ = get_identifier (token_buffer); }
|
||
| STRUCT { $$ = get_identifier (token_buffer); }
|
||
| UNION { $$ = get_identifier (token_buffer); }
|
||
| IF { $$ = get_identifier (token_buffer); }
|
||
| ELSE { $$ = get_identifier (token_buffer); }
|
||
| WHILE { $$ = get_identifier (token_buffer); }
|
||
| DO { $$ = get_identifier (token_buffer); }
|
||
| FOR { $$ = get_identifier (token_buffer); }
|
||
| SWITCH { $$ = get_identifier (token_buffer); }
|
||
| CASE { $$ = get_identifier (token_buffer); }
|
||
| DEFAULT { $$ = get_identifier (token_buffer); }
|
||
| BREAK { $$ = get_identifier (token_buffer); }
|
||
| CONTINUE { $$ = get_identifier (token_buffer); }
|
||
| RETURN { $$ = get_identifier (token_buffer); }
|
||
| GOTO { $$ = get_identifier (token_buffer); }
|
||
| ASM_KEYWORD { $$ = get_identifier (token_buffer); }
|
||
| SIZEOF { $$ = get_identifier (token_buffer); }
|
||
| TYPEOF { $$ = get_identifier (token_buffer); }
|
||
| ALIGNOF { $$ = get_identifier (token_buffer); }
|
||
| 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
|
||
%%
|