diff options
Diffstat (limited to 'gcc/c-parse.in')
| -rw-r--r-- | gcc/c-parse.in | 3588 |
1 files changed, 0 insertions, 3588 deletions
diff --git a/gcc/c-parse.in b/gcc/c-parse.in deleted file mode 100644 index fe0d51709eb..00000000000 --- a/gcc/c-parse.in +++ /dev/null @@ -1,3588 +0,0 @@ -/* YACC parser for C syntax and for Objective C. -*-c-*- - Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, - 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. - -This file is part of GCC. - -GCC is free software; you can redistribute it and/or modify it under -the terms of the GNU General Public License as published by the Free -Software Foundation; either version 2, or (at your option) any later -version. - -GCC is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -for more details. - -You should have received a copy of the GNU General Public License -along with GCC; see the file COPYING. If not, write to the Free -Software Foundation, 59 Temple Place - Suite 330, Boston, MA -02111-1307, USA. */ - -/* This file defines the grammar of C and that of Objective C. - @@ifobjc ... @@end_ifobjc conditionals contain code for Objective C only. - @@ifc ... @@end_ifc conditionals contain code for C only. - Sed commands in Makefile.in are used to convert this file into - c-parse.y and into objc-parse.y. */ - -/* To whomever it may concern: I have heard that such a thing was once - written by AT&T, but I have never seen it. */ - -@@ifc -%expect 13 /* shift/reduce conflicts, and no reduce/reduce conflicts. */ -@@end_ifc - -%{ -#include "config.h" -#include "system.h" -#include "coretypes.h" -#include "tm.h" -#include "tree.h" -#include "langhooks.h" -#include "input.h" -#include "cpplib.h" -#include "intl.h" -#include "timevar.h" -#include "c-pragma.h" /* For YYDEBUG definition, and parse_in. */ -#include "c-tree.h" -#include "flags.h" -#include "varray.h" -#include "output.h" -#include "toplev.h" -#include "ggc.h" -#include "c-common.h" - -#define YYERROR1 { yyerror ("syntax error"); YYERROR; } - -/* Like the default stack expander, except (1) use realloc when possible, - (2) impose no hard maxiumum on stack size, (3) REALLY do not use alloca. - - Irritatingly, YYSTYPE is defined after this %{ %} block, so we cannot - give malloced_yyvs its proper type. This is ok since all we need from - it is to be able to free it. */ - -static short *malloced_yyss; -static void *malloced_yyvs; - -#define yyoverflow(MSG, SS, SSSIZE, VS, VSSIZE, YYSSZ) \ -do { \ - size_t newsize; \ - short *newss; \ - YYSTYPE *newvs; \ - newsize = *(YYSSZ) *= 2; \ - if (malloced_yyss) \ - { \ - newss = really_call_realloc (*(SS), newsize * sizeof (short)); \ - newvs = really_call_realloc (*(VS), newsize * sizeof (YYSTYPE)); \ - } \ - else \ - { \ - newss = really_call_malloc (newsize * sizeof (short)); \ - newvs = really_call_malloc (newsize * sizeof (YYSTYPE)); \ - if (newss) \ - memcpy (newss, *(SS), (SSSIZE)); \ - if (newvs) \ - memcpy (newvs, *(VS), (VSSIZE)); \ - } \ - if (!newss || !newvs) \ - { \ - yyerror (MSG); \ - return 2; \ - } \ - *(SS) = newss; \ - *(VS) = newvs; \ - malloced_yyss = newss; \ - malloced_yyvs = (void *) newvs; \ -} while (0) -%} - -%start program - -%union {long itype; tree ttype; void *otype; struct c_expr exprtype; - struct c_arg_info *arginfotype; struct c_declarator *dtrtype; - struct c_type_name *typenametype; struct c_parm *parmtype; - struct c_declspecs *dsptype; struct c_typespec tstype; - enum tree_code code; location_t location; } - -/* All identifiers that are not reserved words - and are not declared typedefs in the current block */ -%token IDENTIFIER - -/* All identifiers that are declared typedefs in the current block. - In some contexts, they are treated just like IDENTIFIER, - but they can also serve as typespecs in declarations. */ -%token TYPENAME - -/* Reserved words that specify storage class. - yylval contains an IDENTIFIER_NODE which indicates which one. */ -%token SCSPEC /* Storage class other than static. */ -%token STATIC /* Static storage class. */ - -/* Reserved words that specify type. - yylval contains an IDENTIFIER_NODE which indicates which one. */ -%token TYPESPEC - -/* Reserved words that qualify type: "const", "volatile", or "restrict". - yylval contains an IDENTIFIER_NODE which indicates which one. */ -%token TYPE_QUAL - -/* Objective-C protocol qualifiers. These acquire their magic powers - only in certain contexts. */ -%token OBJC_TYPE_QUAL - -/* Character or numeric constants. - yylval is the node for the constant. */ -%token CONSTANT - -/* String constants in raw form. - yylval is a STRING_CST node. */ - -%token STRING - -/* "...", used for functions with variable arglists. */ -%token ELLIPSIS - -/* the reserved words */ -/* SCO include files test "ASM", so use something else. */ -%token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT -%token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF -%token ATTRIBUTE EXTENSION LABEL -%token REALPART IMAGPART VA_ARG CHOOSE_EXPR TYPES_COMPATIBLE_P -%token FUNC_NAME OFFSETOF - -/* Add precedence rules to solve dangling else s/r conflict */ -%nonassoc IF -%nonassoc ELSE - -/* Define the operator tokens and their precedences. - The value is an integer because, if used, it is the tree code - to use in the expression made from the operator. */ - -%right <code> ASSIGN '=' -%right <code> '?' ':' -%left <code> OROR -%left <code> ANDAND -%left <code> '|' -%left <code> '^' -%left <code> '&' -%left <code> EQCOMPARE -%left <code> ARITHCOMPARE -%left <code> LSHIFT RSHIFT -%left <code> '+' '-' -%left <code> '*' '/' '%' -%right <code> UNARY PLUSPLUS MINUSMINUS -%left HYPERUNARY -%left <code> POINTSAT '.' '(' '[' - -/* The Objective-C keywords. These are included in C and in - Objective C, so that the token codes are the same in both. */ -%token AT_INTERFACE AT_IMPLEMENTATION AT_END AT_SELECTOR AT_DEFS AT_ENCODE -%token CLASSNAME AT_PUBLIC AT_PRIVATE AT_PROTECTED AT_PROTOCOL -%token AT_CLASS AT_ALIAS -%token AT_THROW AT_TRY AT_CATCH AT_FINALLY AT_SYNCHRONIZED -%token OBJC_STRING - -%type <code> unop -%type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT -%type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF - -%type <ttype> identifier IDENTIFIER TYPENAME CONSTANT STRING FUNC_NAME -%type <ttype> nonnull_exprlist exprlist -%type <exprtype> expr expr_no_commas cast_expr unary_expr primary -%type <dsptype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea -%type <dsptype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea -%type <dsptype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea -%type <dsptype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea -%type <dsptype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea -%type <dsptype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea -%type <dsptype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea -%type <dsptype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea -%type <dsptype> declspecs_ts declspecs_nots -%type <dsptype> declspecs_ts_nosa declspecs_nots_nosa -%type <dsptype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs -%type <dsptype> maybe_type_quals_attrs -%type <tstype> typespec_nonattr typespec_attr -%type <tstype> typespec_reserved_nonattr typespec_reserved_attr -%type <tstype> typespec_nonreserved_nonattr -%type <ttype> offsetof_member_designator - -%type <ttype> scspec SCSPEC STATIC TYPESPEC TYPE_QUAL maybe_volatile -%type <ttype> initdecls notype_initdecls initdcl notype_initdcl -%type <exprtype> init -%type <ttype> simple_asm_expr maybeasm asm_stmt asm_argument asm_string -%type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers -%type <ttype> maybe_attribute attributes attribute attribute_list attrib -%type <ttype> any_word - -%type <ttype> compstmt compstmt_start compstmt_primary_start -%type <ttype> stmt label stmt_nocomp start_break start_continue - -%type <ttype> c99_block_start c99_block_lineno_labeled_stmt -%type <ttype> if_statement_1 if_statement_2 -%type <dtrtype> declarator -%type <dtrtype> notype_declarator after_type_declarator -%type <dtrtype> parm_declarator -%type <dtrtype> parm_declarator_starttypename parm_declarator_nostarttypename -%type <dtrtype> array_declarator - -%type <tstype> structsp_attr structsp_nonattr -%type <ttype> component_decl_list component_decl_list2 -%type <ttype> component_decl components components_notype component_declarator -%type <ttype> component_notype_declarator -%type <ttype> enumlist enumerator -%type <ttype> struct_head union_head enum_head -%type <typenametype> typename -%type <dtrtype> absdcl absdcl1 absdcl1_ea absdcl1_noea direct_absdcl1 -%type <parmtype> absdcl_maybe_attribute -%type <ttype> condition xexpr for_cond_expr for_incr_expr -%type <parmtype> parm firstparm -%type <ttype> identifiers - -%type <arginfotype> parms parmlist parmlist_1 parmlist_2 -%type <arginfotype> parmlist_or_identifiers parmlist_or_identifiers_1 -%type <ttype> identifiers_or_typenames - -%type <itype> setspecs setspecs_fp extension - -%type <location> save_location - -%type <otype> save_obstack_position - -@@ifobjc -/* the Objective-C nonterminals */ - -%type <ttype> methoddecl unaryselector keywordselector selector -%type <code> methodtype -%type <ttype> keyworddecl receiver objcmessageexpr messageargs -%type <ttype> keywordexpr keywordarglist keywordarg -%type <ttype> optparmlist optparms reservedwords objcselectorexpr -%type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr -%type <ttype> non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr - -%type <ttype> CLASSNAME OBJC_STRING OBJC_TYPE_QUAL - -%type <ttype> superclass objc_quals objc_qual objc_typename -%type <itype> objc_try_catch_stmt optellipsis -@@end_ifobjc - -%{ -/* Declaration specifiers of the current declaration. */ -static struct c_declspecs *current_declspecs; -static GTY(()) tree prefix_attributes; - -/* List of all the attributes applying to the identifier currently being - declared; includes prefix_attributes and possibly some more attributes - just after a comma. */ -static GTY(()) tree all_prefix_attributes; - -/* Structure to save declaration specifiers. */ -struct c_declspec_stack { - /* Saved value of current_declspecs. */ - struct c_declspecs *current_declspecs; - /* Saved value of prefix_attributes. */ - tree prefix_attributes; - /* Saved value of all_prefix_attributes. */ - tree all_prefix_attributes; - /* Next level of stack. */ - struct c_declspec_stack *next; -}; - -/* Stack of saved values of current_declspecs, prefix_attributes and - all_prefix_attributes. */ -static struct c_declspec_stack *declspec_stack; - -/* INDIRECT_REF with a TREE_TYPE of the type being queried for offsetof. */ -static tree offsetof_base; - -/* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK - should be called from the productions making use of setspecs. */ -#define PUSH_DECLSPEC_STACK \ - do { \ - struct c_declspec_stack *t = XOBNEW (&parser_obstack, \ - struct c_declspec_stack); \ - t->current_declspecs = current_declspecs; \ - t->prefix_attributes = prefix_attributes; \ - t->all_prefix_attributes = all_prefix_attributes; \ - t->next = declspec_stack; \ - declspec_stack = t; \ - } while (0) - -#define POP_DECLSPEC_STACK \ - do { \ - current_declspecs = declspec_stack->current_declspecs; \ - prefix_attributes = declspec_stack->prefix_attributes; \ - all_prefix_attributes = declspec_stack->all_prefix_attributes; \ - declspec_stack = declspec_stack->next; \ - } while (0) - -/* For __extension__, save/restore the warning flags which are - controlled by __extension__. */ -#define SAVE_EXT_FLAGS() \ - (pedantic \ - | (warn_pointer_arith << 1) \ - | (warn_traditional << 2) \ - | (flag_iso << 3)) - -#define RESTORE_EXT_FLAGS(val) \ - do { \ - pedantic = val & 1; \ - warn_pointer_arith = (val >> 1) & 1; \ - warn_traditional = (val >> 2) & 1; \ - flag_iso = (val >> 3) & 1; \ - } while (0) - -@@ifobjc -/* Objective-C specific parser/lexer information */ - -static int objc_pq_context = 0; - -/* The following flag is needed to contextualize ObjC lexical analysis. - In some cases (e.g., 'int NSObject;'), it is undesirable to bind - an identifier to an ObjC class, even if a class with that name - exists. */ -static int objc_need_raw_identifier; -#define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL -@@end_ifobjc - -@@ifc -#define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */ -@@end_ifc - -/* Tell yyparse how to print a token's value, if yydebug is set. */ - -#define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL) - -static void yyprint (FILE *, int, YYSTYPE); -static void yyerror (const char *); -static int yylexname (void); -static inline int _yylex (void); -static int yylex (void); -static void init_reswords (void); - - /* Initialization routine for this file. */ -void -c_parse_init (void) -{ - init_reswords (); -} - -%} - -%% -program: /* empty */ - { if (pedantic) - pedwarn ("ISO C forbids an empty source file"); - } - | extdefs - ; - -/* the reason for the strange actions in this rule - is so that notype_initdecls when reached via datadef - can find valid declaration specifiers in $0. */ - -extdefs: - save_obstack_position { $<dsptype>$ = NULL; } extdef - { obstack_free (&parser_obstack, $1); } - | extdefs save_obstack_position - { $<dsptype>$ = NULL; ggc_collect (); } extdef - { obstack_free (&parser_obstack, $2); } - ; - -extdef: - fndef - | datadef - | asmdef - | extension extdef - { RESTORE_EXT_FLAGS ($1); } -@@ifobjc - | objcdef -@@end_ifobjc - ; - -/* Record the current position of parser_obstack before a - declaration to restore it afterwards. */ -save_obstack_position: - { $$ = obstack_alloc (&parser_obstack, 0); } - ; - -datadef: - setspecs notype_initdecls ';' - { pedwarn ("data definition has no type or storage class"); - POP_DECLSPEC_STACK; } - | declspecs_nots setspecs notype_initdecls ';' - { POP_DECLSPEC_STACK; } - | declspecs_ts setspecs initdecls ';' - { POP_DECLSPEC_STACK; } - | declspecs ';' - { shadow_tag (finish_declspecs ($1)); } - | error ';' - | error '}' - | ';' - { if (pedantic) - pedwarn ("ISO C does not allow extra %<;%> outside of a function"); } - ; - -fndef: - declspecs_ts setspecs declarator - { if (!start_function (current_declspecs, $3, - all_prefix_attributes)) - YYERROR1; - } - old_style_parm_decls save_location - { DECL_SOURCE_LOCATION (current_function_decl) = $6; - store_parm_decls (); } - compstmt_or_error - { finish_function (); - POP_DECLSPEC_STACK; } - | declspecs_ts setspecs declarator error - { POP_DECLSPEC_STACK; } - | declspecs_nots setspecs notype_declarator - { if (!start_function (current_declspecs, $3, - all_prefix_attributes)) - YYERROR1; - } - old_style_parm_decls save_location - { DECL_SOURCE_LOCATION (current_function_decl) = $6; - store_parm_decls (); } - compstmt_or_error - { finish_function (); - POP_DECLSPEC_STACK; } - | declspecs_nots setspecs notype_declarator error - { POP_DECLSPEC_STACK; } - | setspecs notype_declarator - { if (!start_function (current_declspecs, $2, - all_prefix_attributes)) - YYERROR1; - } - old_style_parm_decls save_location - { DECL_SOURCE_LOCATION (current_function_decl) = $5; - store_parm_decls (); } - compstmt_or_error - { finish_function (); - POP_DECLSPEC_STACK; } - | setspecs notype_declarator error - { POP_DECLSPEC_STACK; } - ; - -identifier: - IDENTIFIER - | TYPENAME -@@ifobjc - | CLASSNAME -@@end_ifobjc - ; - -unop: '&' - { $$ = ADDR_EXPR; } - | '-' - { $$ = NEGATE_EXPR; } - | '+' - { $$ = CONVERT_EXPR; -@@ifc - if (warn_traditional && !in_system_header) - warning ("traditional C rejects the unary plus operator"); -@@end_ifc - } - | PLUSPLUS - { $$ = PREINCREMENT_EXPR; } - | MINUSMINUS - { $$ = PREDECREMENT_EXPR; } - | '~' - { $$ = BIT_NOT_EXPR; } - | '!' - { $$ = TRUTH_NOT_EXPR; } - ; - -expr: expr_no_commas - | expr ',' expr_no_commas - { $$.value = build_compound_expr ($1.value, $3.value); - $$.original_code = COMPOUND_EXPR; } - ; - -exprlist: - /* empty */ - { $$ = NULL_TREE; } - | nonnull_exprlist - ; - -nonnull_exprlist: - expr_no_commas - { $$ = build_tree_list (NULL_TREE, $1.value); } - | nonnull_exprlist ',' expr_no_commas - { chainon ($1, build_tree_list (NULL_TREE, $3.value)); } - ; - -unary_expr: - primary - | '*' cast_expr %prec UNARY - { $$.value = build_indirect_ref ($2.value, "unary *"); - $$.original_code = ERROR_MARK; } - /* __extension__ turns off -pedantic for following primary. */ - | extension cast_expr %prec UNARY - { $$ = $2; - RESTORE_EXT_FLAGS ($1); } - | unop cast_expr %prec UNARY - { $$.value = build_unary_op ($1, $2.value, 0); - overflow_warning ($$.value); - $$.original_code = ERROR_MARK; } - /* Refer to the address of a label as a pointer. */ - | ANDAND identifier - { $$.value = finish_label_address_expr ($2); - $$.original_code = ERROR_MARK; } - | sizeof unary_expr %prec UNARY - { skip_evaluation--; - in_sizeof--; - if (TREE_CODE ($2.value) == COMPONENT_REF - && DECL_C_BIT_FIELD (TREE_OPERAND ($2.value, 1))) - error ("%<sizeof%> applied to a bit-field"); - $$ = c_expr_sizeof_expr ($2); } - | sizeof '(' typename ')' %prec HYPERUNARY - { skip_evaluation--; - in_sizeof--; - $$ = c_expr_sizeof_type ($3); } - | alignof unary_expr %prec UNARY - { skip_evaluation--; - in_alignof--; - $$.value = c_alignof_expr ($2.value); - $$.original_code = ERROR_MARK; } - | alignof '(' typename ')' %prec HYPERUNARY - { skip_evaluation--; - in_alignof--; - $$.value = c_alignof (groktypename ($3)); - $$.original_code = ERROR_MARK; } - | REALPART cast_expr %prec UNARY - { $$.value = build_unary_op (REALPART_EXPR, $2.value, 0); - $$.original_code = ERROR_MARK; } - | IMAGPART cast_expr %prec UNARY - { $$.value = build_unary_op (IMAGPART_EXPR, $2.value, 0); - $$.original_code = ERROR_MARK; } - ; - -sizeof: - SIZEOF { skip_evaluation++; in_sizeof++; } - ; - -alignof: - ALIGNOF { skip_evaluation++; in_alignof++; } - ; - -typeof: - TYPEOF { skip_evaluation++; in_typeof++; } - ; - -cast_expr: - unary_expr - | '(' typename ')' cast_expr %prec UNARY - { $$.value = c_cast_expr ($2, $4.value); - $$.original_code = ERROR_MARK; } - ; - -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.value = lang_hooks.truthvalue_conversion - (default_conversion ($1.value)); - skip_evaluation += $1.value == truthvalue_false_node; } - expr_no_commas - { skip_evaluation -= $1.value == truthvalue_false_node; - $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); } - | expr_no_commas OROR - { $1.value = lang_hooks.truthvalue_conversion - (default_conversion ($1.value)); - skip_evaluation += $1.value == truthvalue_true_node; } - expr_no_commas - { skip_evaluation -= $1.value == truthvalue_true_node; - $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); } - | expr_no_commas '?' - { $1.value = lang_hooks.truthvalue_conversion - (default_conversion ($1.value)); - skip_evaluation += $1.value == truthvalue_false_node; } - expr ':' - { skip_evaluation += (($1.value == truthvalue_true_node) - - ($1.value == truthvalue_false_node)); } - expr_no_commas - { skip_evaluation -= $1.value == truthvalue_true_node; - $$.value = build_conditional_expr ($1.value, $4.value, - $7.value); - $$.original_code = ERROR_MARK; } - | expr_no_commas '?' - { if (pedantic) - pedwarn ("ISO C forbids omitting the middle term of a ?: expression"); - /* Make sure first operand is calculated only once. */ - $<ttype>2 = save_expr (default_conversion ($1.value)); - $1.value = lang_hooks.truthvalue_conversion ($<ttype>2); - skip_evaluation += $1.value == truthvalue_true_node; } - ':' expr_no_commas - { skip_evaluation -= $1.value == truthvalue_true_node; - $$.value = build_conditional_expr ($1.value, $<ttype>2, - $5.value); - $$.original_code = ERROR_MARK; } - | expr_no_commas '=' expr_no_commas - { $$.value = build_modify_expr ($1.value, NOP_EXPR, $3.value); - $$.original_code = MODIFY_EXPR; - } - | expr_no_commas ASSIGN expr_no_commas - { $$.value = build_modify_expr ($1.value, $2, $3.value); - TREE_NO_WARNING ($$.value) = 1; - $$.original_code = ERROR_MARK; - } - ; - -primary: - IDENTIFIER - { - if (yychar == YYEMPTY) - yychar = YYLEX; - $$.value = build_external_ref ($1, yychar == '('); - $$.original_code = ERROR_MARK; - } - | CONSTANT - { $$.value = $1; $$.original_code = ERROR_MARK; } - | STRING - { $$.value = $1; $$.original_code = STRING_CST; } - | FUNC_NAME - { $$.value = fname_decl (C_RID_CODE ($1), $1); - $$.original_code = ERROR_MARK; } - | '(' typename ')' '{' - { start_init (NULL_TREE, NULL, 0); - $<ttype>$ = groktypename ($2); - if (C_TYPE_VARIABLE_SIZE ($<ttype>$)) - { - error ("compound literal has variable size"); - $<ttype>$ = error_mark_node; - } - really_start_incremental_init ($<ttype>$); } - initlist_maybe_comma '}' %prec UNARY - { struct c_expr init = pop_init_level (0); - tree constructor = init.value; - tree type = $<ttype>5; - finish_init (); - maybe_warn_string_init (type, init); - - if (pedantic && !flag_isoc99) - pedwarn ("ISO C90 forbids compound literals"); - $$.value = build_compound_literal (type, constructor); - $$.original_code = ERROR_MARK; - } - | '(' expr ')' - { $$.value = $2.value; - if (TREE_CODE ($$.value) == MODIFY_EXPR) - TREE_NO_WARNING ($$.value) = 1; - $$.original_code = ERROR_MARK; } - | '(' error ')' - { $$.value = error_mark_node; $$.original_code = ERROR_MARK; } - | compstmt_primary_start compstmt_nostart ')' - { if (pedantic) - pedwarn ("ISO C forbids braced-groups within expressions"); - $$.value = c_finish_stmt_expr ($1); - $$.original_code = ERROR_MARK; - } - | compstmt_primary_start error ')' - { c_finish_stmt_expr ($1); - $$.value = error_mark_node; - $$.original_code = ERROR_MARK; - } - | primary '(' exprlist ')' %prec '.' - { $$.value = build_function_call ($1.value, $3); - $$.original_code = ERROR_MARK; } - | VA_ARG '(' expr_no_commas ',' typename ')' - { $$.value = build_va_arg ($3.value, groktypename ($5)); - $$.original_code = ERROR_MARK; } - - | OFFSETOF '(' typename ',' - { tree type = groktypename ($3); - if (type == error_mark_node) - offsetof_base = error_mark_node; - else - offsetof_base = build1 (INDIRECT_REF, type, NULL); - } - offsetof_member_designator ')' - { $$.value = fold_offsetof ($6); - $$.original_code = ERROR_MARK; } - | OFFSETOF '(' error ')' - { $$.value = error_mark_node; $$.original_code = ERROR_MARK; } - | CHOOSE_EXPR '(' expr_no_commas ',' expr_no_commas ',' - expr_no_commas ')' - { - tree c; - - c = fold ($3.value); - STRIP_NOPS (c); - if (TREE_CODE (c) != INTEGER_CST) - error ("first argument to %<__builtin_choose_expr%> not" - " a constant"); - $$ = integer_zerop (c) ? $7 : $5; - } - | CHOOSE_EXPR '(' error ')' - { $$.value = error_mark_node; $$.original_code = ERROR_MARK; } - | TYPES_COMPATIBLE_P '(' typename ',' typename ')' - { - tree e1, e2; - - e1 = TYPE_MAIN_VARIANT (groktypename ($3)); - e2 = TYPE_MAIN_VARIANT (groktypename ($5)); - - $$.value = comptypes (e1, e2) - ? build_int_cst (NULL_TREE, 1) - : build_int_cst (NULL_TREE, 0); - $$.original_code = ERROR_MARK; - } - | TYPES_COMPATIBLE_P '(' error ')' - { $$.value = error_mark_node; $$.original_code = ERROR_MARK; } - | primary '[' expr ']' %prec '.' - { $$.value = build_array_ref ($1.value, $3.value); - $$.original_code = ERROR_MARK; } - | primary '.' identifier - { $$.value = build_component_ref ($1.value, $3); - $$.original_code = ERROR_MARK; } - | primary POINTSAT identifier - { - tree expr = build_indirect_ref ($1.value, "->"); - $$.value = build_component_ref (expr, $3); - $$.original_code = ERROR_MARK; - } - | primary PLUSPLUS - { $$.value = build_unary_op (POSTINCREMENT_EXPR, $1.value, 0); - $$.original_code = ERROR_MARK; } - | primary MINUSMINUS - { $$.value = build_unary_op (POSTDECREMENT_EXPR, $1.value, 0); - $$.original_code = ERROR_MARK; } -@@ifobjc - | objcmessageexpr - { $$.value = objc_build_message_expr ($1); - $$.original_code = ERROR_MARK; } - | objcselectorexpr - { $$.value = objc_build_selector_expr ($1); - $$.original_code = ERROR_MARK; } - | objcprotocolexpr - { $$.value = objc_build_protocol_expr ($1); - $$.original_code = ERROR_MARK; } - | objcencodeexpr - { $$.value = objc_build_encode_expr ($1); - $$.original_code = ERROR_MARK; } - | OBJC_STRING - { $$.value = objc_build_string_object ($1); - $$.original_code = ERROR_MARK; } -@@end_ifobjc - ; - -/* This is the second argument to __builtin_offsetof. We must have one - identifier, and beyond that we want to accept sub structure and sub - array references. */ - -offsetof_member_designator: - identifier - { $$ = build_component_ref (offsetof_base, $1); } - | offsetof_member_designator '.' identifier - { $$ = build_component_ref ($1, $3); } - | offsetof_member_designator '[' expr ']' - { $$ = build_array_ref ($1, $3.value); } - ; - -old_style_parm_decls: - /* empty */ - | datadecls - ; - -/* 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_location datadecl - { } - ; - -datadecls: - lineno_datadecl - | errstmt - | datadecls lineno_datadecl - | lineno_datadecl errstmt - ; - -/* We don't allow prefix attributes here because they cause reduce/reduce - conflicts: we can't know whether we're parsing a function decl with - attribute suffix, or function defn with attribute prefix on first old - style parm. */ -datadecl: - declspecs_ts_nosa setspecs initdecls ';' - { POP_DECLSPEC_STACK; } - | declspecs_nots_nosa setspecs notype_initdecls ';' - { POP_DECLSPEC_STACK; } - | declspecs_ts_nosa ';' - { shadow_tag_warned (finish_declspecs ($1), 1); - pedwarn ("empty declaration"); } - | declspecs_nots_nosa ';' - { pedwarn ("empty declaration"); } - ; - -/* This combination which saves a lineno before a decl - is the normal thing to use, rather than decl itself. - This is to avoid shift/reduce conflicts in contexts - where statement labels are allowed. */ -lineno_decl: - save_location decl - { } - ; - -/* records the type and storage class specs to use for processing - the declarators that follow. - Maintains a stack of outer-level values of current_declspecs, - for the sake of parm declarations nested in function declarators. */ -setspecs: /* empty */ - { pending_xref_error (); - PUSH_DECLSPEC_STACK; - if ($<dsptype>0) - { - prefix_attributes = $<dsptype>0->attrs; - $<dsptype>0->attrs = NULL_TREE; - current_declspecs = $<dsptype>0; - } - else - { - prefix_attributes = NULL_TREE; - current_declspecs = build_null_declspecs (); - } - current_declspecs = finish_declspecs (current_declspecs); - all_prefix_attributes = prefix_attributes; } - ; - -/* Possibly attributes after a comma, which should reset all_prefix_attributes - to prefix_attributes with these ones chained on the front. */ -maybe_resetattrs: - maybe_attribute - { all_prefix_attributes = chainon ($1, prefix_attributes); } - ; - -decl: - declspecs_ts setspecs initdecls ';' - { POP_DECLSPEC_STACK; } - | declspecs_nots setspecs notype_initdecls ';' - { POP_DECLSPEC_STACK; } - | declspecs_ts setspecs nested_function - { POP_DECLSPEC_STACK; } - | declspecs_nots setspecs notype_nested_function - { POP_DECLSPEC_STACK; } - | declspecs ';' - { shadow_tag (finish_declspecs ($1)); } - | extension decl - { RESTORE_EXT_FLAGS ($1); } - ; - -/* A list of declaration specifiers. These are: - - - Storage class specifiers (scspec), which for GCC currently includes - function specifiers ("inline"). - - - Type specifiers (typespec_*). - - - Type qualifiers (TYPE_QUAL). - - - Attribute specifier lists (attributes). - - The various cases below are classified according to: - - (a) Whether a storage class specifier is included or not; some - places in the grammar disallow storage class specifiers (_sc or _nosc). - - (b) Whether a type specifier has been seen; after a type specifier, - a typedef name is an identifier to redeclare (_ts or _nots). - - (c) Whether the list starts with an attribute; in certain places, - the grammar requires specifiers that don't start with an attribute - (_sa or _nosa). - - (d) Whether the list ends with an attribute (or a specifier such that - any following attribute would have been parsed as part of that specifier); - this avoids shift-reduce conflicts in the parsing of attributes - (_ea or _noea). - - TODO: - - (i) Distinguish between function specifiers and storage class specifiers, - at least for the purpose of warnings about obsolescent usage. - - (ii) Halve the number of productions here by eliminating the _sc/_nosc - distinction and instead checking where required that storage class - specifiers aren't present. */ - -/* Declspecs which contain at least one type specifier or typedef name. - (Just `const' or `volatile' is not enough.) - A typedef'd name following these is taken as a name to be declared. */ - -declspecs_nosc_nots_nosa_noea: - TYPE_QUAL - { $$ = declspecs_add_qual (build_null_declspecs (), $1); } - | declspecs_nosc_nots_nosa_noea TYPE_QUAL - { $$ = declspecs_add_qual ($1, $2); } - | declspecs_nosc_nots_nosa_ea TYPE_QUAL - { $$ = declspecs_add_qual ($1, $2); } - ; - -declspecs_nosc_nots_nosa_ea: - declspecs_nosc_nots_nosa_noea attributes - { $$ = declspecs_add_attrs ($1, $2); } - ; - -declspecs_nosc_nots_sa_noea: - declspecs_nosc_nots_sa_noea TYPE_QUAL - { $$ = declspecs_add_qual ($1, $2); } - | declspecs_nosc_nots_sa_ea TYPE_QUAL - { $$ = declspecs_add_qual ($1, $2); } - ; - -declspecs_nosc_nots_sa_ea: - attributes - { $$ = declspecs_add_attrs (build_null_declspecs (), $1); } - | declspecs_nosc_nots_sa_noea attributes - { $$ = declspecs_add_attrs ($1, $2); } - ; - -declspecs_nosc_ts_nosa_noea: - typespec_nonattr - { $$ = declspecs_add_type (build_null_declspecs (), $1); } - | declspecs_nosc_ts_nosa_noea TYPE_QUAL - { $$ = declspecs_add_qual ($1, $2); } - | declspecs_nosc_ts_nosa_ea TYPE_QUAL - { $$ = declspecs_add_qual ($1, $2); } - | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_nosc_nots_nosa_noea typespec_nonattr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_nosc_nots_nosa_ea typespec_nonattr - { $$ = declspecs_add_type ($1, $2); } - ; - -declspecs_nosc_ts_nosa_ea: - typespec_attr - { $$ = declspecs_add_type (build_null_declspecs (), $1); } - | declspecs_nosc_ts_nosa_noea attributes - { $$ = declspecs_add_attrs ($1, $2); } - | declspecs_nosc_ts_nosa_noea typespec_reserved_attr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_nosc_ts_nosa_ea typespec_reserved_attr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_nosc_nots_nosa_noea typespec_attr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_nosc_nots_nosa_ea typespec_attr - { $$ = declspecs_add_type ($1, $2); } - ; - -declspecs_nosc_ts_sa_noea: - declspecs_nosc_ts_sa_noea TYPE_QUAL - { $$ = declspecs_add_qual ($1, $2); } - | declspecs_nosc_ts_sa_ea TYPE_QUAL - { $$ = declspecs_add_qual ($1, $2); } - | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_nosc_nots_sa_noea typespec_nonattr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_nosc_nots_sa_ea typespec_nonattr - { $$ = declspecs_add_type ($1, $2); } - ; - -declspecs_nosc_ts_sa_ea: - declspecs_nosc_ts_sa_noea attributes - { $$ = declspecs_add_attrs ($1, $2); } - | declspecs_nosc_ts_sa_noea typespec_reserved_attr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_nosc_ts_sa_ea typespec_reserved_attr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_nosc_nots_sa_noea typespec_attr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_nosc_nots_sa_ea typespec_attr - { $$ = declspecs_add_type ($1, $2); } - ; - -declspecs_sc_nots_nosa_noea: - scspec - { $$ = declspecs_add_scspec (build_null_declspecs (), $1); } - | declspecs_sc_nots_nosa_noea TYPE_QUAL - { $$ = declspecs_add_qual ($1, $2); } - | declspecs_sc_nots_nosa_ea TYPE_QUAL - { $$ = declspecs_add_qual ($1, $2); } - | declspecs_nosc_nots_nosa_noea scspec - { $$ = declspecs_add_scspec ($1, $2); } - | declspecs_nosc_nots_nosa_ea scspec - { $$ = declspecs_add_scspec ($1, $2); } - | declspecs_sc_nots_nosa_noea scspec - { $$ = declspecs_add_scspec ($1, $2); } - | declspecs_sc_nots_nosa_ea scspec - { $$ = declspecs_add_scspec ($1, $2); } - ; - -declspecs_sc_nots_nosa_ea: - declspecs_sc_nots_nosa_noea attributes - { $$ = declspecs_add_attrs ($1, $2); } - ; - -declspecs_sc_nots_sa_noea: - declspecs_sc_nots_sa_noea TYPE_QUAL - { $$ = declspecs_add_qual ($1, $2); } - | declspecs_sc_nots_sa_ea TYPE_QUAL - { $$ = declspecs_add_qual ($1, $2); } - | declspecs_nosc_nots_sa_noea scspec - { $$ = declspecs_add_scspec ($1, $2); } - | declspecs_nosc_nots_sa_ea scspec - { $$ = declspecs_add_scspec ($1, $2); } - | declspecs_sc_nots_sa_noea scspec - { $$ = declspecs_add_scspec ($1, $2); } - | declspecs_sc_nots_sa_ea scspec - { $$ = declspecs_add_scspec ($1, $2); } - ; - -declspecs_sc_nots_sa_ea: - declspecs_sc_nots_sa_noea attributes - { $$ = declspecs_add_attrs ($1, $2); } - ; - -declspecs_sc_ts_nosa_noea: - declspecs_sc_ts_nosa_noea TYPE_QUAL - { $$ = declspecs_add_qual ($1, $2); } - | declspecs_sc_ts_nosa_ea TYPE_QUAL - { $$ = declspecs_add_qual ($1, $2); } - | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_sc_nots_nosa_noea typespec_nonattr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_sc_nots_nosa_ea typespec_nonattr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_nosc_ts_nosa_noea scspec - { $$ = declspecs_add_scspec ($1, $2); } - | declspecs_nosc_ts_nosa_ea scspec - { $$ = declspecs_add_scspec ($1, $2); } - | declspecs_sc_ts_nosa_noea scspec - { $$ = declspecs_add_scspec ($1, $2); } - | declspecs_sc_ts_nosa_ea scspec - { $$ = declspecs_add_scspec ($1, $2); } - ; - -declspecs_sc_ts_nosa_ea: - declspecs_sc_ts_nosa_noea attributes - { $$ = declspecs_add_attrs ($1, $2); } - | declspecs_sc_ts_nosa_noea typespec_reserved_attr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_sc_ts_nosa_ea typespec_reserved_attr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_sc_nots_nosa_noea typespec_attr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_sc_nots_nosa_ea typespec_attr - { $$ = declspecs_add_type ($1, $2); } - ; - -declspecs_sc_ts_sa_noea: - declspecs_sc_ts_sa_noea TYPE_QUAL - { $$ = declspecs_add_qual ($1, $2); } - | declspecs_sc_ts_sa_ea TYPE_QUAL - { $$ = declspecs_add_qual ($1, $2); } - | declspecs_sc_ts_sa_noea typespec_reserved_nonattr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_sc_ts_sa_ea typespec_reserved_nonattr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_sc_nots_sa_noea typespec_nonattr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_sc_nots_sa_ea typespec_nonattr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_nosc_ts_sa_noea scspec - { $$ = declspecs_add_scspec ($1, $2); } - | declspecs_nosc_ts_sa_ea scspec - { $$ = declspecs_add_scspec ($1, $2); } - | declspecs_sc_ts_sa_noea scspec - { $$ = declspecs_add_scspec ($1, $2); } - | declspecs_sc_ts_sa_ea scspec - { $$ = declspecs_add_scspec ($1, $2); } - ; - -declspecs_sc_ts_sa_ea: - declspecs_sc_ts_sa_noea attributes - { $$ = declspecs_add_attrs ($1, $2); } - | declspecs_sc_ts_sa_noea typespec_reserved_attr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_sc_ts_sa_ea typespec_reserved_attr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_sc_nots_sa_noea typespec_attr - { $$ = declspecs_add_type ($1, $2); } - | declspecs_sc_nots_sa_ea typespec_attr - { $$ = declspecs_add_type ($1, $2); } - ; - -/* Particular useful classes of declspecs. */ -declspecs_ts: - declspecs_nosc_ts_nosa_noea - | declspecs_nosc_ts_nosa_ea - | declspecs_nosc_ts_sa_noea - | declspecs_nosc_ts_sa_ea - | declspecs_sc_ts_nosa_noea - | declspecs_sc_ts_nosa_ea - | declspecs_sc_ts_sa_noea - | declspecs_sc_ts_sa_ea - ; - -declspecs_nots: - declspecs_nosc_nots_nosa_noea - | declspecs_nosc_nots_nosa_ea - | declspecs_nosc_nots_sa_noea - | declspecs_nosc_nots_sa_ea - | declspecs_sc_nots_nosa_noea - | declspecs_sc_nots_nosa_ea - | declspecs_sc_nots_sa_noea - | declspecs_sc_nots_sa_ea - ; - -declspecs_ts_nosa: - declspecs_nosc_ts_nosa_noea - | declspecs_nosc_ts_nosa_ea - | declspecs_sc_ts_nosa_noea - | declspecs_sc_ts_nosa_ea - ; - -declspecs_nots_nosa: - declspecs_nosc_nots_nosa_noea - | declspecs_nosc_nots_nosa_ea - | declspecs_sc_nots_nosa_noea - | declspecs_sc_nots_nosa_ea - ; - -declspecs_nosc_ts: - declspecs_nosc_ts_nosa_noea - | declspecs_nosc_ts_nosa_ea - | declspecs_nosc_ts_sa_noea - | declspecs_nosc_ts_sa_ea - ; - -declspecs_nosc_nots: - declspecs_nosc_nots_nosa_noea - | declspecs_nosc_nots_nosa_ea - | declspecs_nosc_nots_sa_noea - | declspecs_nosc_nots_sa_ea - ; - -declspecs_nosc: - declspecs_nosc_ts_nosa_noea - | declspecs_nosc_ts_nosa_ea - | declspecs_nosc_ts_sa_noea - | declspecs_nosc_ts_sa_ea - | declspecs_nosc_nots_nosa_noea - | declspecs_nosc_nots_nosa_ea - | declspecs_nosc_nots_sa_noea - | declspecs_nosc_nots_sa_ea - ; - -declspecs: - declspecs_nosc_nots_nosa_noea - | declspecs_nosc_nots_nosa_ea - | declspecs_nosc_nots_sa_noea - | declspecs_nosc_nots_sa_ea - | declspecs_nosc_ts_nosa_noea - | declspecs_nosc_ts_nosa_ea - | declspecs_nosc_ts_sa_noea - | declspecs_nosc_ts_sa_ea - | declspecs_sc_nots_nosa_noea - | declspecs_sc_nots_nosa_ea - | declspecs_sc_nots_sa_noea - | declspecs_sc_nots_sa_ea - | declspecs_sc_ts_nosa_noea - | declspecs_sc_ts_nosa_ea - | declspecs_sc_ts_sa_noea - | declspecs_sc_ts_sa_ea - ; - -/* A (possibly empty) sequence of type qualifiers and attributes. */ -maybe_type_quals_attrs: - /* empty */ - { $$ = NULL; } - | declspecs_nosc_nots - { $$ = $1; } - ; - -/* A type specifier (but not a type qualifier). - Once we have seen one of these in a declaration, - if a typedef name appears then it is being redeclared. - - The _reserved versions start with a reserved word and may appear anywhere - in the declaration specifiers; the _nonreserved versions may only - appear before any other type specifiers, and after that are (if names) - being redeclared. - - FIXME: should the _nonreserved version be restricted to names being - redeclared only? The other entries there relate only the GNU extensions - and Objective C, and are historically parsed thus, and don't make sense - after other type specifiers, but it might be cleaner to count them as - _reserved. - - _attr means: specifiers that either end with attributes, - or are such that any following attributes would - be parsed as part of the specifier. - - _nonattr: other specifiers not ending with attributes. */ - -typespec_nonattr: - typespec_reserved_nonattr - | typespec_nonreserved_nonattr - ; - -typespec_attr: - typespec_reserved_attr - ; - -typespec_reserved_nonattr: - TYPESPEC - { OBJC_NEED_RAW_IDENTIFIER (1); - $$.kind = ctsk_resword; - $$.spec = $1; } - | structsp_nonattr - ; - -typespec_reserved_attr: - structsp_attr - ; - -typespec_nonreserved_nonattr: - TYPENAME - { /* For a typedef name, record the meaning, not the name. - In case of `foo foo, bar;'. */ - $$.kind = ctsk_typedef; - $$.spec = lookup_name ($1); } -@@ifobjc - | CLASSNAME protocolrefs - { $$.kind = ctsk_objc; - $$.spec = objc_get_protocol_qualified_type ($1, $2); } - | TYPENAME non_empty_protocolrefs - { $$.kind = ctsk_objc; - $$.spec = objc_get_protocol_qualified_type ($1, $2); } - -/* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>" - - nisse@lysator.liu.se */ - | non_empty_protocolrefs - { $$.kind = ctsk_objc; - $$.spec = objc_get_protocol_qualified_type (NULL_TREE, $1); } -@@end_ifobjc - | typeof '(' expr ')' - { skip_evaluation--; - in_typeof--; - if (TREE_CODE ($3.value) == COMPONENT_REF - && DECL_C_BIT_FIELD (TREE_OPERAND ($3.value, 1))) - error ("%<typeof%> applied to a bit-field"); - $$.kind = ctsk_typeof; - $$.spec = TREE_TYPE ($3.value); - pop_maybe_used (variably_modified_type_p ($$.spec, - NULL_TREE)); } - | typeof '(' typename ')' - { skip_evaluation--; - in_typeof--; - $$.kind = ctsk_typeof; - $$.spec = groktypename ($3); - pop_maybe_used (variably_modified_type_p ($$.spec, - NULL_TREE)); } - ; - -/* typespec_nonreserved_attr does not exist. */ - -initdecls: - initdcl - | initdecls ',' maybe_resetattrs initdcl - ; - -notype_initdecls: - notype_initdcl - | notype_initdecls ',' maybe_resetattrs notype_initdcl - ; - -initdcl: - declarator maybeasm maybe_attribute '=' - { $<ttype>$ = start_decl ($1, current_declspecs, true, - chainon ($3, all_prefix_attributes)); - if (!$<ttype>$) - $<ttype>$ = error_mark_node; - start_init ($<ttype>$, $2, global_bindings_p ()); } - init -/* Note how the declaration of the variable is in effect while its init is parsed! */ - { finish_init (); - if ($<ttype>5 != error_mark_node) - { - maybe_warn_string_init (TREE_TYPE ($<ttype>5), $6); - finish_decl ($<ttype>5, $6.value, $2); - } - } - | declarator maybeasm maybe_attribute - { tree d = start_decl ($1, current_declspecs, false, - chainon ($3, all_prefix_attributes)); - if (d) - finish_decl (d, NULL_TREE, $2); - } - ; - -notype_initdcl: - notype_declarator maybeasm maybe_attribute '=' - { $<ttype>$ = start_decl ($1, current_declspecs, true, - chainon ($3, all_prefix_attributes)); - if (!$<ttype>$) - $<ttype>$ = error_mark_node; - start_init ($<ttype>$, $2, global_bindings_p ()); } - init -/* Note how the declaration of the variable is in effect while its init is parsed! */ - { finish_init (); - if ($<ttype>5 != error_mark_node) - { - maybe_warn_string_init (TREE_TYPE ($<ttype>5), $6); - finish_decl ($<ttype>5, $6.value, $2); - } - } - | notype_declarator maybeasm maybe_attribute - { tree d = start_decl ($1, current_declspecs, false, - chainon ($3, all_prefix_attributes)); - if (d) - 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 stop_string_translation - '(' '(' attribute_list ')' ')' start_string_translation - { $$ = $5; } - | ATTRIBUTE error start_string_translation - { $$ = NULL_TREE; } - ; - -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 ')' - { $$ = build_tree_list ($1, $3); } - ; - -/* This still leaves out most reserved keywords, - shouldn't we include them? */ - -any_word: - identifier - | scspec - | TYPESPEC - | TYPE_QUAL - ; - -scspec: - STATIC - | SCSPEC - ; - -/* Initializers. `init' is the entry point. */ - -init: - expr_no_commas - { $$ = $1; } - | '{' - { really_start_incremental_init (NULL_TREE); } - initlist_maybe_comma '}' - { $$ = pop_init_level (0); } - | error - { $$.value = error_mark_node; $$.original_code = ERROR_MARK; } - ; - -/* `initlist_maybe_comma' is the guts of an initializer in braces. */ -initlist_maybe_comma: - /* empty */ - { if (pedantic) - pedwarn ("ISO C forbids empty initializer braces"); } - | initlist1 maybecomma - ; - -initlist1: - initelt - | initlist1 ',' initelt - ; - -/* `initelt' is a single element of an initializer. - It may use braces. */ -initelt: - designator_list '=' initval - { if (pedantic && !flag_isoc99) - pedwarn ("ISO C90 forbids specifying subobject to initialize"); } - | array_designator initval - { if (pedantic) - pedwarn ("obsolete use of designated initializer without %<=%>"); } - | identifier ':' - { set_init_label ($1); - if (pedantic) - pedwarn ("obsolete use of designated initializer with %<:%>"); } - initval - {} - | initval - ; - -initval: - '{' - { push_init_level (0); } - initlist_maybe_comma '}' - { process_init_element (pop_init_level (0)); } - | expr_no_commas - { process_init_element ($1); } - | error - ; - -designator_list: - designator - | designator_list designator - ; - -designator: - '.' identifier - { set_init_label ($2); } - | array_designator - ; - -array_designator: - '[' expr_no_commas ELLIPSIS expr_no_commas ']' - { set_init_index ($2.value, $4.value); - if (pedantic) - pedwarn ("ISO C forbids specifying range of elements to initialize"); } - | '[' expr_no_commas ']' - { set_init_index ($2.value, NULL_TREE); } - ; - -nested_function: - declarator - { if (pedantic) - pedwarn ("ISO C forbids nested functions"); - - push_function_context (); - if (!start_function (current_declspecs, $1, - all_prefix_attributes)) - { - pop_function_context (); - YYERROR1; - } - } - old_style_parm_decls save_location - { tree decl = current_function_decl; - DECL_SOURCE_LOCATION (decl) = $4; - 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 - { tree decl = current_function_decl; - add_stmt ($6); - finish_function (); - pop_function_context (); - add_stmt (build_stmt (DECL_EXPR, decl)); } - ; - -notype_nested_function: - notype_declarator - { if (pedantic) - pedwarn ("ISO C forbids nested functions"); - - push_function_context (); - if (!start_function (current_declspecs, $1, - all_prefix_attributes)) - { - pop_function_context (); - YYERROR1; - } - } - old_style_parm_decls save_location - { tree decl = current_function_decl; - DECL_SOURCE_LOCATION (decl) = $4; - 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 - { tree decl = current_function_decl; - add_stmt ($6); - finish_function (); - pop_function_context (); - add_stmt (build_stmt (DECL_EXPR, decl)); } - ; - -/* Any kind of declarator (thus, all declarators allowed - after an explicit typespec). */ - -declarator: - after_type_declarator - | notype_declarator - ; - -/* A declarator that is allowed only after an explicit typespec. */ - -after_type_declarator: - '(' maybe_attribute after_type_declarator ')' - { $$ = $2 ? build_attrs_declarator ($2, $3) : $3; } - | after_type_declarator '(' parmlist_or_identifiers %prec '.' - { $$ = build_function_declarator ($3, $1); } - | after_type_declarator array_declarator %prec '.' - { $$ = set_array_declarator_inner ($2, $1, false); } - | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY - { $$ = make_pointer_declarator ($2, $3); } - | TYPENAME - { $$ = build_id_declarator ($1); } - ; - -/* Kinds of declarator that can appear in a parameter list - in addition to notype_declarator. This is like after_type_declarator - but does not allow a typedef name in parentheses as an identifier - (because it would conflict with a function with that typedef as arg). */ -parm_declarator: - parm_declarator_starttypename - | parm_declarator_nostarttypename - ; - -parm_declarator_starttypename: - parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.' - { $$ = build_function_declarator ($3, $1); } - | parm_declarator_starttypename array_declarator %prec '.' - { $$ = set_array_declarator_inner ($2, $1, false); } - | TYPENAME - { $$ = build_id_declarator ($1); } - ; - -parm_declarator_nostarttypename: - parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.' - { $$ = build_function_declarator ($3, $1); } - | parm_declarator_nostarttypename array_declarator %prec '.' - { $$ = set_array_declarator_inner ($2, $1, false); } - | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY - { $$ = make_pointer_declarator ($2, $3); } - | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY - { $$ = make_pointer_declarator ($2, $3); } - | '(' maybe_attribute parm_declarator_nostarttypename ')' - { $$ = $2 ? build_attrs_declarator ($2, $3) : $3; } - ; - -/* A declarator allowed whether or not there has been - an explicit typespec. These cannot redeclare a typedef-name. */ - -notype_declarator: - notype_declarator '(' parmlist_or_identifiers %prec '.' - { $$ = build_function_declarator ($3, $1); } - | '(' maybe_attribute notype_declarator ')' - { $$ = $2 ? build_attrs_declarator ($2, $3) : $3; } - | '*' maybe_type_quals_attrs notype_declarator %prec UNARY - { $$ = make_pointer_declarator ($2, $3); } - | notype_declarator array_declarator %prec '.' - { $$ = set_array_declarator_inner ($2, $1, false); } - | IDENTIFIER - { $$ = build_id_declarator ($1); } - ; - -struct_head: - STRUCT - { $$ = NULL_TREE; } - | STRUCT attributes - { $$ = $2; } - ; - -union_head: - UNION - { $$ = NULL_TREE; } - | UNION attributes - { $$ = $2; } - ; - -enum_head: - ENUM - { $$ = NULL_TREE; } - | ENUM attributes - { $$ = $2; } - ; - -/* structsp_attr: struct/union/enum specifiers that either - end with attributes, or are such that any following attributes would - be parsed as part of the struct/union/enum specifier. - - structsp_nonattr: other struct/union/enum specifiers. */ - -structsp_attr: - struct_head identifier '{' - { $<ttype>$ = start_struct (RECORD_TYPE, $2); - /* Start scope of tag before parsing components. */ - } - component_decl_list '}' maybe_attribute - { $$.spec = finish_struct ($<ttype>4, nreverse ($5), - chainon ($1, $7)); - $$.kind = ctsk_tagdef; } - | struct_head '{' component_decl_list '}' maybe_attribute - { $$.spec = finish_struct (start_struct (RECORD_TYPE, - NULL_TREE), - nreverse ($3), chainon ($1, $5)); - $$.kind = ctsk_tagdef; - } - | union_head identifier '{' - { $<ttype>$ = start_struct (UNION_TYPE, $2); } - component_decl_list '}' maybe_attribute - { $$.spec = finish_struct ($<ttype>4, nreverse ($5), - chainon ($1, $7)); - $$.kind = ctsk_tagdef; } - | union_head '{' component_decl_list '}' maybe_attribute - { $$.spec = finish_struct (start_struct (UNION_TYPE, - NULL_TREE), - nreverse ($3), chainon ($1, $5)); - $$.kind = ctsk_tagdef; - } - | enum_head identifier '{' - { $<ttype>$ = start_enum ($2); } - enumlist maybecomma_warn '}' maybe_attribute - { $$.spec = finish_enum ($<ttype>4, nreverse ($5), - chainon ($1, $8)); - $$.kind = ctsk_tagdef; } - | enum_head '{' - { $<ttype>$ = start_enum (NULL_TREE); } - enumlist maybecomma_warn '}' maybe_attribute - { $$.spec = finish_enum ($<ttype>3, nreverse ($4), - chainon ($1, $7)); - $$.kind = ctsk_tagdef; } - ; - -structsp_nonattr: - struct_head identifier - { $$ = parser_xref_tag (RECORD_TYPE, $2); } - | union_head identifier - { $$ = parser_xref_tag (UNION_TYPE, $2); } - | enum_head identifier - { $$ = parser_xref_tag (ENUMERAL_TYPE, $2); - /* In ISO C, enumerated types can be referred to - only if already defined. */ - if (pedantic && !COMPLETE_TYPE_P ($$.spec)) - pedwarn ("ISO C forbids forward references to %<enum%> types"); } - ; - -maybecomma: - /* empty */ - | ',' - ; - -maybecomma_warn: - /* empty */ - | ',' - { if (pedantic && !flag_isoc99) - pedwarn ("comma at end of enumerator list"); } - ; - -/* We chain the components in reverse order. They are put in forward - order in structsp_attr. - - Note that component_declarator returns single decls, so components - and components_notype can use TREE_CHAIN directly, wheras components - and components_notype return lists (of comma separated decls), so - component_decl_list and component_decl_list2 must use chainon. - - The theory behind all this is that there will be more semicolon - separated fields than comma separated fields, and so we'll be - minimizing the number of node traversals required by chainon. */ - -component_decl_list: - component_decl_list2 - { $$ = $1; } - | component_decl_list2 component_decl - { $$ = chainon ($2, $1); - pedwarn ("no semicolon at end of struct or union"); } - ; - -component_decl_list2: /* empty */ - { $$ = NULL_TREE; } - | component_decl_list2 component_decl ';' - { $$ = chainon ($2, $1); } - | component_decl_list2 ';' - { if (pedantic) - pedwarn ("extra semicolon in struct or union specified"); } -@@ifobjc - /* foo(sizeof(struct{ @defs(ClassName)})); */ - | AT_DEFS '(' CLASSNAME ')' - { $$ = nreverse (objc_get_class_ivars ($3)); } -@@end_ifobjc - ; - -component_decl: - declspecs_nosc_ts setspecs components - { $$ = $3; - POP_DECLSPEC_STACK; } - | declspecs_nosc_ts setspecs - { - /* Support for unnamed structs or unions as members of - structs or unions (which is [a] useful and [b] supports - MS P-SDK). */ - $$ = grokfield (build_id_declarator (NULL_TREE), - current_declspecs, NULL_TREE); - POP_DECLSPEC_STACK; } - | declspecs_nosc_nots setspecs components_notype - { $$ = $3; - POP_DECLSPEC_STACK; } - | declspecs_nosc_nots - { if (pedantic) - pedwarn ("ISO C forbids member declarations with no members"); - shadow_tag_warned (finish_declspecs ($1), pedantic); - $$ = NULL_TREE; } - | error - { $$ = NULL_TREE; } - | extension component_decl - { $$ = $2; - RESTORE_EXT_FLAGS ($1); } - ; - -components: - component_declarator - | components ',' maybe_resetattrs component_declarator - { TREE_CHAIN ($4) = $1; $$ = $4; } - ; - -components_notype: - component_notype_declarator - | components_notype ',' maybe_resetattrs component_notype_declarator - { TREE_CHAIN ($4) = $1; $$ = $4; } - ; - -component_declarator: - declarator maybe_attribute - { $$ = grokfield ($1, current_declspecs, NULL_TREE); - decl_attributes (&$$, - chainon ($2, all_prefix_attributes), 0); } - | declarator ':' expr_no_commas maybe_attribute - { $$ = grokfield ($1, current_declspecs, $3.value); - decl_attributes (&$$, - chainon ($4, all_prefix_attributes), 0); } - | ':' expr_no_commas maybe_attribute - { $$ = grokfield (build_id_declarator (NULL_TREE), - current_declspecs, $2.value); - decl_attributes (&$$, - chainon ($3, all_prefix_attributes), 0); } - ; - -component_notype_declarator: - notype_declarator maybe_attribute - { $$ = grokfield ($1, current_declspecs, NULL_TREE); - decl_attributes (&$$, - chainon ($2, all_prefix_attributes), 0); } - | notype_declarator ':' expr_no_commas maybe_attribute - { $$ = grokfield ($1, current_declspecs, $3.value); - decl_attributes (&$$, - chainon ($4, all_prefix_attributes), 0); } - | ':' expr_no_commas maybe_attribute - { $$ = grokfield (build_id_declarator (NULL_TREE), - current_declspecs, $2.value); - decl_attributes (&$$, - chainon ($3, all_prefix_attributes), 0); } - ; - -/* We chain the enumerators in reverse order. - They are put in forward order in structsp_attr. */ - -enumlist: - enumerator - | enumlist ',' enumerator - { if ($1 == error_mark_node) - $$ = $1; - else - TREE_CHAIN ($3) = $1, $$ = $3; } - | error - { $$ = error_mark_node; } - ; - - -enumerator: - identifier - { $$ = build_enumerator ($1, NULL_TREE); } - | identifier '=' expr_no_commas - { $$ = build_enumerator ($1, $3.value); } - ; - -typename: - declspecs_nosc - { pending_xref_error (); - $<dsptype>$ = finish_declspecs ($1); } - absdcl - { $$ = XOBNEW (&parser_obstack, struct c_type_name); - $$->specs = $<dsptype>2; - $$->declarator = $3; } - ; - -absdcl: /* an absolute declarator */ - /* empty */ - { $$ = build_id_declarator (NULL_TREE); } - | absdcl1 - ; - -absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */ - /* empty */ - { $$ = build_c_parm (current_declspecs, all_prefix_attributes, - build_id_declarator (NULL_TREE)); } - | absdcl1 - { $$ = build_c_parm (current_declspecs, all_prefix_attributes, - $1); } - | absdcl1_noea attributes - { $$ = build_c_parm (current_declspecs, - chainon ($2, all_prefix_attributes), - $1); } - ; - -absdcl1: /* a nonempty absolute declarator */ - absdcl1_ea - | absdcl1_noea - ; - -absdcl1_noea: - direct_absdcl1 - | '*' maybe_type_quals_attrs absdcl1_noea - { $$ = make_pointer_declarator ($2, $3); } - ; - -absdcl1_ea: - '*' maybe_type_quals_attrs - { $$ = make_pointer_declarator - ($2, build_id_declarator (NULL_TREE)); } - | '*' maybe_type_quals_attrs absdcl1_ea - { $$ = make_pointer_declarator ($2, $3); } - ; - -direct_absdcl1: - '(' maybe_attribute absdcl1 ')' - { $$ = $2 ? build_attrs_declarator ($2, $3) : $3; } - | direct_absdcl1 '(' parmlist - { $$ = build_function_declarator ($3, $1); } - | direct_absdcl1 array_declarator - { $$ = set_array_declarator_inner ($2, $1, true); } - | '(' parmlist - { $$ = build_function_declarator - ($2, build_id_declarator (NULL_TREE)); } - | array_declarator - { $$ = set_array_declarator_inner - ($1, build_id_declarator (NULL_TREE), true); } - ; - -/* The [...] part of a declarator for an array type. */ - -array_declarator: - '[' maybe_type_quals_attrs expr_no_commas ']' - { $$ = build_array_declarator ($3.value, $2, false, false); } - | '[' maybe_type_quals_attrs ']' - { $$ = build_array_declarator (NULL_TREE, $2, false, false); } - | '[' maybe_type_quals_attrs '*' ']' - { $$ = build_array_declarator (NULL_TREE, $2, false, true); } - | '[' STATIC maybe_type_quals_attrs expr_no_commas ']' - { $$ = build_array_declarator ($4.value, $3, true, false); } - /* declspecs_nosc_nots is a synonym for type_quals_attrs. */ - | '[' declspecs_nosc_nots STATIC expr_no_commas ']' - { $$ = build_array_declarator ($4.value, $2, true, false); } - ; - -/* A nonempty series of declarations and statements (possibly followed by - some labels) that can form the body of a compound statement. - NOTE: we don't allow labels on declarations; this might seem like a - natural extension, but there would be a conflict between attributes - on the label and prefix attributes on the declaration. */ - -stmts_and_decls: - lineno_stmt_decl_or_labels_ending_stmt - | lineno_stmt_decl_or_labels_ending_decl - | lineno_stmt_decl_or_labels_ending_label - { - error ("label at end of compound statement"); - } - | lineno_stmt_decl_or_labels_ending_error - ; - -lineno_stmt_decl_or_labels_ending_stmt: - lineno_stmt - | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt - | lineno_stmt_decl_or_labels_ending_decl lineno_stmt - | lineno_stmt_decl_or_labels_ending_label lineno_stmt - | lineno_stmt_decl_or_labels_ending_error lineno_stmt - ; - -lineno_stmt_decl_or_labels_ending_decl: - lineno_decl - | lineno_stmt_decl_or_labels_ending_stmt lineno_decl - { - if ((pedantic && !flag_isoc99) - || warn_declaration_after_statement) - pedwarn_c90 ("ISO C90 forbids mixed declarations and code"); - } - | lineno_stmt_decl_or_labels_ending_decl lineno_decl - | lineno_stmt_decl_or_labels_ending_error lineno_decl - ; - -lineno_stmt_decl_or_labels_ending_label: - lineno_label - | lineno_stmt_decl_or_labels_ending_stmt lineno_label - | lineno_stmt_decl_or_labels_ending_decl lineno_label - | lineno_stmt_decl_or_labels_ending_label lineno_label - | lineno_stmt_decl_or_labels_ending_error lineno_label - ; - -lineno_stmt_decl_or_labels_ending_error: - errstmt - | lineno_stmt_decl_or_labels errstmt - ; - -lineno_stmt_decl_or_labels: - lineno_stmt_decl_or_labels_ending_stmt - | lineno_stmt_decl_or_labels_ending_decl - | lineno_stmt_decl_or_labels_ending_label - | lineno_stmt_decl_or_labels_ending_error - ; - -errstmt: error ';' - ; - -/* Start and end blocks created for the new scopes of C99. */ -c99_block_start: /* empty */ - { $$ = c_begin_compound_stmt (flag_isoc99); } - ; - -/* Read zero or more forward-declarations for labels - that nested functions can jump to. */ -maybe_label_decls: - /* empty */ - | label_decls - { if (pedantic) - pedwarn ("ISO C forbids label declarations"); } - ; - -label_decls: - label_decl - | label_decls label_decl - ; - -label_decl: - LABEL identifiers_or_typenames ';' - { tree link; - for (link = $2; link; link = TREE_CHAIN (link)) - { - tree label = declare_label (TREE_VALUE (link)); - C_DECLARED_LABEL_FLAG (label) = 1; - add_stmt (build_stmt (DECL_EXPR, label)); - } - } - ; - -/* This is the body of a function definition. - It causes syntax errors to ignore to the next openbrace. */ -compstmt_or_error: - compstmt - { add_stmt ($1); } - | error compstmt - ; - -compstmt_start: '{' { $$ = c_begin_compound_stmt (true); } - ; - -compstmt_nostart: '}' - | maybe_label_decls compstmt_contents_nonempty '}' - ; - -compstmt_contents_nonempty: - stmts_and_decls - | error - ; - -compstmt_primary_start: - '(' '{' - { if (cur_stmt_list == NULL) - { - error ("braced-group within expression allowed " - "only inside a function"); - YYERROR; - } - $$ = c_begin_stmt_expr (); - } - ; - -compstmt: compstmt_start compstmt_nostart - { $$ = c_end_compound_stmt ($1, true); } - ; - -/* The forced readahead in here is because we might be at the end of a - line, and the line and file won't be bumped until yylex absorbs the - first token on the next line. */ - -save_location: - { if (yychar == YYEMPTY) - yychar = YYLEX; - $$ = input_location; } - ; - -lineno_labels: - /* empty */ - | lineno_labels lineno_label - ; - -/* A labeled statement. In C99 it also generates an implicit block. */ -c99_block_lineno_labeled_stmt: - c99_block_start lineno_labels lineno_stmt - { $$ = c_end_compound_stmt ($1, flag_isoc99); } - ; - -lineno_stmt: - save_location stmt - { - /* Two cases cannot and do not have line numbers associated: - If stmt is degenerate, such as "2;", then stmt is an - INTEGER_CST, which cannot hold line numbers. But that's - ok because the statement will either be changed to a - MODIFY_EXPR during gimplification of the statement expr, - or discarded. If stmt was compound, but without new - variables, we will have skipped the creation of a BIND - and will have a bare STATEMENT_LIST. But that's ok - because (recursively) all of the component statments - should already have line numbers assigned. */ - if ($2 && EXPR_P ($2)) - SET_EXPR_LOCATION ($2, $1); - } - ; - -lineno_label: - save_location label - { if ($2) SET_EXPR_LOCATION ($2, $1); } - ; - -condition: save_location expr - { $$ = lang_hooks.truthvalue_conversion ($2.value); - if (EXPR_P ($$)) - SET_EXPR_LOCATION ($$, $1); } - ; - -/* Implement -Wparenthesis by special casing IF statement directly nested - within IF statement. This requires some amount of duplication of the - productions under c99_block_lineno_labeled_stmt in order to work out. - But it's still likely more maintainable than lots of state outside the - parser... */ - -if_statement_1: - c99_block_start lineno_labels if_statement - { $$ = c_end_compound_stmt ($1, flag_isoc99); } - ; - -if_statement_2: - c99_block_start lineno_labels ';' - { if (extra_warnings) - add_stmt (build (NOP_EXPR, NULL_TREE, NULL_TREE)); - $$ = c_end_compound_stmt ($1, flag_isoc99); } - | c99_block_lineno_labeled_stmt - ; - -if_statement: - IF c99_block_start save_location '(' condition ')' - if_statement_1 ELSE if_statement_2 - { c_finish_if_stmt ($3, $5, $7, $9, true); - add_stmt (c_end_compound_stmt ($2, flag_isoc99)); } - | IF c99_block_start save_location '(' condition ')' - if_statement_2 ELSE if_statement_2 - { c_finish_if_stmt ($3, $5, $7, $9, false); - add_stmt (c_end_compound_stmt ($2, flag_isoc99)); } - | IF c99_block_start save_location '(' condition ')' - if_statement_1 %prec IF - { c_finish_if_stmt ($3, $5, $7, NULL, true); - add_stmt (c_end_compound_stmt ($2, flag_isoc99)); } - | IF c99_block_start save_location '(' condition ')' - if_statement_2 %prec IF - { c_finish_if_stmt ($3, $5, $7, NULL, false); - add_stmt (c_end_compound_stmt ($2, flag_isoc99)); } - ; - -start_break: /* empty */ - { $$ = c_break_label; c_break_label = NULL; } - ; - -start_continue: /* empty */ - { $$ = c_cont_label; c_cont_label = NULL; } - ; - -while_statement: - WHILE c99_block_start save_location '(' condition ')' - start_break start_continue c99_block_lineno_labeled_stmt - { c_finish_loop ($3, $5, NULL, $9, c_break_label, - c_cont_label, true); - add_stmt (c_end_compound_stmt ($2, flag_isoc99)); - c_break_label = $7; c_cont_label = $8; } - ; - -do_statement: - DO c99_block_start save_location start_break start_continue - c99_block_lineno_labeled_stmt WHILE - { $<ttype>$ = c_break_label; c_break_label = $4; } - { $<ttype>$ = c_cont_label; c_cont_label = $5; } - '(' condition ')' ';' - { c_finish_loop ($3, $11, NULL, $6, $<ttype>8, - $<ttype>9, false); - add_stmt (c_end_compound_stmt ($2, flag_isoc99)); } - ; - -xexpr: - /* empty */ - { $$ = NULL_TREE; } - | expr - { $$ = $1.value; } - ; - -for_init_stmt: - xexpr ';' - { c_finish_expr_stmt ($1); } - | decl - { check_for_loop_decls (); } - ; - -for_cond_expr: save_location xexpr - { if ($2) - { - $$ = lang_hooks.truthvalue_conversion ($2); - if (EXPR_P ($$)) - SET_EXPR_LOCATION ($$, $1); - } - else - $$ = NULL; - } - ; - -for_incr_expr: xexpr - { $$ = c_process_expr_stmt ($1); } - ; - -for_statement: - FOR c99_block_start '(' for_init_stmt - save_location for_cond_expr ';' for_incr_expr ')' - start_break start_continue c99_block_lineno_labeled_stmt - { c_finish_loop ($5, $6, $8, $12, c_break_label, - c_cont_label, true); - add_stmt (c_end_compound_stmt ($2, flag_isoc99)); - c_break_label = $10; c_cont_label = $11; } - ; - -switch_statement: - SWITCH c99_block_start '(' expr ')' - { $<ttype>$ = c_start_case ($4.value); } - start_break c99_block_lineno_labeled_stmt - { c_finish_case ($8); - if (c_break_label) - add_stmt (build (LABEL_EXPR, void_type_node, - c_break_label)); - c_break_label = $7; - add_stmt (c_end_compound_stmt ($2, flag_isoc99)); } - ; - -/* Parse a single real statement, not including any labels or compounds. */ -stmt_nocomp: - expr ';' - { $$ = c_finish_expr_stmt ($1.value); } - | if_statement - { $$ = NULL_TREE; } - | while_statement - { $$ = NULL_TREE; } - | do_statement - { $$ = NULL_TREE; } - | for_statement - { $$ = NULL_TREE; } - | switch_statement - { $$ = NULL_TREE; } - | BREAK ';' - { $$ = c_finish_bc_stmt (&c_break_label, true); } - | CONTINUE ';' - { $$ = c_finish_bc_stmt (&c_cont_label, false); } - | RETURN ';' - { $$ = c_finish_return (NULL_TREE); } - | RETURN expr ';' - { $$ = c_finish_return ($2.value); } - | asm_stmt - | GOTO identifier ';' - { $$ = c_finish_goto_label ($2); } - | GOTO '*' expr ';' - { $$ = c_finish_goto_ptr ($3.value); } - | ';' - { $$ = NULL_TREE; } -@@ifobjc - | AT_THROW expr ';' - { $$ = objc_build_throw_stmt ($2.value); } - | AT_THROW ';' - { $$ = objc_build_throw_stmt (NULL_TREE); } - | objc_try_catch_stmt - { $$ = NULL_TREE; } - | AT_SYNCHRONIZED save_location '(' expr ')' compstmt - { objc_build_synchronized ($2, $4.value, $6); $$ = NULL_TREE; } - ; - -objc_catch_prefix: - AT_CATCH '(' parm ')' - { objc_begin_catch_clause (grokparm ($3)); } - ; - -objc_catch_clause: - objc_catch_prefix '{' compstmt_nostart - { objc_finish_catch_clause (); } - | objc_catch_prefix '{' error '}' - { objc_finish_catch_clause (); } - ; - -objc_opt_catch_list: - /* empty */ - | objc_opt_catch_list objc_catch_clause - ; - -objc_try_catch_clause: - AT_TRY save_location compstmt - { objc_begin_try_stmt ($2, $3); } - objc_opt_catch_list - ; - -objc_finally_clause: - AT_FINALLY save_location compstmt - { objc_build_finally_clause ($2, $3); } - ; - -objc_try_catch_stmt: - objc_try_catch_clause - { objc_finish_try_stmt (); } - | objc_try_catch_clause objc_finally_clause - { objc_finish_try_stmt (); } -@@end_ifobjc - ; - -/* Parse a single or compound real statement, not including any labels. */ -stmt: - compstmt - { add_stmt ($1); $$ = NULL_TREE; } - | stmt_nocomp - ; - -/* Any kind of label, including jump labels and case labels. - ANSI C accepts labels only before statements, but we allow them - also at the end of a compound statement. */ - -label: CASE expr_no_commas ':' - { $$ = do_case ($2.value, NULL_TREE); } - | CASE expr_no_commas ELLIPSIS expr_no_commas ':' - { $$ = do_case ($2.value, $4.value); } - | DEFAULT ':' - { $$ = do_case (NULL_TREE, NULL_TREE); } - | identifier save_location ':' maybe_attribute - { tree label = define_label ($2, $1); - if (label) - { - decl_attributes (&label, $4, 0); - $$ = add_stmt (build_stmt (LABEL_EXPR, label)); - } - else - $$ = NULL_TREE; - } - ; - -/* Asm expressions and statements */ - -/* simple_asm_expr is used in restricted contexts, where a full - expression with inputs and outputs does not make sense. */ -simple_asm_expr: - ASM_KEYWORD stop_string_translation - '(' asm_string ')' start_string_translation - { $$ = $4; } - ; - -/* maybeasm: used for assembly names for declarations */ -maybeasm: - /* empty */ - { $$ = NULL_TREE; } - | simple_asm_expr - ; - -/* asmdef: asm() outside a function body. */ -asmdef: - simple_asm_expr ';' - { assemble_asm ($1); } - | ASM_KEYWORD error start_string_translation ';' - {} - ; - -/* Full-blown asm statement with inputs, outputs, clobbers, and - volatile tag allowed. */ -asm_stmt: - ASM_KEYWORD maybe_volatile stop_string_translation - '(' asm_argument ')' start_string_translation ';' - { $$ = build_asm_stmt ($2, $5); } - ; - -asm_argument: - /* no operands */ - asm_string - { $$ = build_asm_expr ($1, 0, 0, 0, true); } - /* output operands */ - | asm_string ':' asm_operands - { $$ = build_asm_expr ($1, $3, 0, 0, false); } - /* output and input operands */ - | asm_string ':' asm_operands ':' asm_operands - { $$ = build_asm_expr ($1, $3, $5, 0, false); } - /* output and input operands and clobbers */ - | asm_string ':' asm_operands ':' asm_operands ':' asm_clobbers - { $$ = build_asm_expr ($1, $3, $5, $7, false); } - ; - -/* Either 'volatile' or nothing. First thing in an `asm' statement. */ - -maybe_volatile: - /* empty */ - { $$ = 0; } - | TYPE_QUAL - { if ($1 != ridpointers[RID_VOLATILE]) - { - warning ("%E qualifier ignored on asm", $1); - $$ = 0; - } - else - $$ = $1; - } - ; - -/* 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: - asm_string start_string_translation '(' expr ')' - stop_string_translation - { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), - $4.value); } - | '[' identifier ']' asm_string start_string_translation - '(' expr ')' stop_string_translation - { $2 = build_string (IDENTIFIER_LENGTH ($2), - IDENTIFIER_POINTER ($2)); - $$ = build_tree_list (build_tree_list ($2, $4), $7.value); } - ; - -asm_clobbers: - asm_string - { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); } - | asm_clobbers ',' asm_string - { $$ = tree_cons (NULL_TREE, $3, $1); } - ; - -/* Strings in 'asm' must be narrow strings. */ -asm_string: - STRING - { if (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE ($1))) - != char_type_node) - { - error ("wide string literal in %<asm%>"); - $$ = build_string (1, ""); - } - else - $$ = $1; } - ; - -stop_string_translation: - { c_lex_string_translate = 0; } - ; - -start_string_translation: - { c_lex_string_translate = 1; } - ; - - -/* This is what appears inside the parens in a function declarator. - Its value is a list of ..._TYPE nodes. Attributes must appear here - to avoid a conflict with their appearance after an open parenthesis - in an abstract declarator, as in - "void bar (int (__attribute__((__mode__(SI))) int foo));". */ -parmlist: - maybe_attribute - { push_scope (); - declare_parm_level (); } - parmlist_1 - { $$ = $3; - pop_scope (); } - ; - -parmlist_1: - parmlist_2 ')' - | parms ';' - { mark_forward_parm_decls (); } - maybe_attribute - { /* Dummy action so attributes are in known place - on parser stack. */ } - parmlist_1 - { $$ = $6; } - | error ')' - { $$ = XOBNEW (&parser_obstack, struct c_arg_info); - $$->parms = 0; - $$->tags = 0; - $$->types = 0; - $$->others = 0; } - ; - -/* This is what appears inside the parens in a function declarator. - Its value is represented in the format that grokdeclarator expects. */ -parmlist_2: /* empty */ - { $$ = XOBNEW (&parser_obstack, struct c_arg_info); - $$->parms = 0; - $$->tags = 0; - $$->types = 0; - $$->others = 0; } - | ELLIPSIS - { $$ = XOBNEW (&parser_obstack, struct c_arg_info); - $$->parms = 0; - $$->tags = 0; - $$->others = 0; - /* Suppress -Wold-style-definition for this case. */ - $$->types = error_mark_node; - error ("ISO C requires a named argument before %<...%>"); - } - | parms - { $$ = get_parm_info (/*ellipsis=*/false); } - | parms ',' ELLIPSIS - { $$ = get_parm_info (/*ellipsis=*/true); } - ; - -parms: - firstparm - { push_parm_decl ($1); } - | parms ',' parm - { push_parm_decl ($3); } - ; - -/* A single parameter declaration or parameter type name, - as found in a parmlist. */ -parm: - declspecs_ts setspecs parm_declarator maybe_attribute - { $$ = build_c_parm (current_declspecs, - chainon ($4, all_prefix_attributes), $3); - POP_DECLSPEC_STACK; } - | declspecs_ts setspecs notype_declarator maybe_attribute - { $$ = build_c_parm (current_declspecs, - chainon ($4, all_prefix_attributes), $3); - POP_DECLSPEC_STACK; } - | declspecs_ts setspecs absdcl_maybe_attribute - { $$ = $3; - POP_DECLSPEC_STACK; } - | declspecs_nots setspecs notype_declarator maybe_attribute - { $$ = build_c_parm (current_declspecs, - chainon ($4, all_prefix_attributes), $3); - POP_DECLSPEC_STACK; } - - | declspecs_nots setspecs absdcl_maybe_attribute - { $$ = $3; - POP_DECLSPEC_STACK; } - ; - -/* The first parm, which must suck attributes from off the top of the parser - stack. */ -firstparm: - declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute - { $$ = build_c_parm (current_declspecs, - chainon ($4, all_prefix_attributes), $3); - POP_DECLSPEC_STACK; } - | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute - { $$ = build_c_parm (current_declspecs, - chainon ($4, all_prefix_attributes), $3); - POP_DECLSPEC_STACK; } - | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute - { $$ = $3; - POP_DECLSPEC_STACK; } - | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute - { $$ = build_c_parm (current_declspecs, - chainon ($4, all_prefix_attributes), $3); - POP_DECLSPEC_STACK; } - - | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute - { $$ = $3; - POP_DECLSPEC_STACK; } - ; - -setspecs_fp: - setspecs - { prefix_attributes = chainon (prefix_attributes, $<ttype>-2); - all_prefix_attributes = prefix_attributes; } - ; - -/* This is used in a function definition - where either a parmlist or an identifier list is ok. - Its value is a list of ..._TYPE nodes or a list of identifiers. */ -parmlist_or_identifiers: - maybe_attribute - { push_scope (); - declare_parm_level (); } - parmlist_or_identifiers_1 - { $$ = $3; - pop_scope (); } - ; - -parmlist_or_identifiers_1: - parmlist_1 - | identifiers ')' - { $$ = XOBNEW (&parser_obstack, struct c_arg_info); - $$->parms = 0; - $$->tags = 0; - $$->types = $1; - $$->others = 0; - - /* Make sure we have a parmlist after attributes. */ - if ($<ttype>-1 != 0) - YYERROR1; - } - ; - -/* A nonempty list of identifiers. */ -identifiers: - IDENTIFIER - { $$ = build_tree_list (NULL_TREE, $1); } - | identifiers ',' IDENTIFIER - { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); } - ; - -/* A nonempty list of identifiers, including typenames. */ -identifiers_or_typenames: - identifier - { $$ = build_tree_list (NULL_TREE, $1); } - | identifiers_or_typenames ',' identifier - { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); } - ; - -extension: - EXTENSION - { $$ = SAVE_EXT_FLAGS (); - pedantic = 0; - warn_pointer_arith = 0; - warn_traditional = 0; - flag_iso = 0; } - ; - -@@ifobjc -/* Objective-C productions. */ - -objcdef: - classdef - | classdecl - | aliasdecl - | protocoldef - | methoddef - | AT_END - { - objc_finish_implementation (); - } - ; - -/* 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: - AT_CLASS identifier_list ';' - { - objc_declare_class ($2); - } - ; - -aliasdecl: - AT_ALIAS identifier identifier ';' - { - objc_declare_alias ($2, $3); - } - ; - -superclass: - ':' identifier { $$ = $2; } - | /* NULL */ %prec HYPERUNARY { $$ = NULL_TREE; } - ; - -class_ivars: - '{' ivar_decl_list '}' - | /* NULL */ - ; - -classdef: - AT_INTERFACE identifier superclass protocolrefs - { - objc_start_class_interface ($2, $3, $4); - } - class_ivars - { - objc_continue_interface (); - } - methodprotolist AT_END - { - objc_finish_interface (); - } - - | AT_IMPLEMENTATION identifier superclass - { - objc_start_class_implementation ($2, $3); - } - class_ivars - { - objc_continue_implementation (); - } - - | AT_INTERFACE identifier '(' identifier ')' protocolrefs - { - objc_start_category_interface ($2, $4, $6); - } - methodprotolist AT_END - { - objc_finish_interface (); - } - - | AT_IMPLEMENTATION identifier '(' identifier ')' - { - objc_start_category_implementation ($2, $4); - } - ; - -protocoldef: - AT_PROTOCOL identifier protocolrefs - { - objc_pq_context = 1; - objc_start_protocol ($2, $3); - } - methodprotolist AT_END - { - objc_pq_context = 0; - objc_finish_interface (); - } - /* The @protocol forward-declaration production introduces a - reduce/reduce conflict on ';', which should be resolved in - favor of the production 'identifier_list -> identifier'. */ - | AT_PROTOCOL identifier_list ';' - { - objc_declare_protocols ($2); - } - ; - -protocolrefs: - /* empty */ - { - $$ = NULL_TREE; - } - | non_empty_protocolrefs - ; - -non_empty_protocolrefs: - ARITHCOMPARE identifier_list ARITHCOMPARE - { - if ($1 == LT_EXPR && $3 == GT_EXPR) - $$ = $2; - else - YYERROR1; - } - ; - -ivar_decl_list: - /* empty */ - | ivar_decl_list visibility_spec ivar_decls - ; - -visibility_spec: - /* empty */ - | AT_PRIVATE { objc_set_visibility (2); } - | AT_PROTECTED { objc_set_visibility (0); } - | AT_PUBLIC { objc_set_visibility (1); } - ; - -ivar_decls: - /* empty */ - | ivar_decls ivar_decl ';' - | ivar_decls ';' - { - if (pedantic) - pedwarn ("extra semicolon in struct or union specified"); - } - ; - -ivar_decl: - component_decl - { - /* Comma-separated ivars are chained together in - reverse order; add them one by one. */ - tree ivar = nreverse ($1); - - for (; ivar; ivar = TREE_CHAIN (ivar)) - objc_add_instance_variable (copy_node (ivar)); - } - ; - -opt_semi: - /* NULL */ - | ';' - { - if (pedantic) - pedwarn ("extra semicolon in method definition specified"); - } - ; - -methodtype: - '+' - | '-' - ; - -methoddef: - methodtype - { - objc_set_method_type ($1); - objc_pq_context = 1; - } - methoddecl opt_semi - { - objc_pq_context = 0; - objc_start_method_definition ($3); - } - compstmt_or_error - { - objc_finish_method_definition (current_function_decl); - } - ; - -/* 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 */ - | methodprotolist methodproto - | methodprotolist { $<ttype>$ = NULL_TREE; } datadef - ; - -semi_or_error: - ';' - | error - ; - -methodproto: - methodtype - { - objc_set_method_type ($1); - /* Remember protocol qualifiers in prototypes. */ - objc_pq_context = 1; - } - methoddecl - { - /* Forget protocol qualifiers here. */ - objc_pq_context = 0; - objc_add_method_declaration ($3); - } - semi_or_error - ; - -methoddecl: - '(' objc_typename ')' unaryselector - { - $$ = objc_build_method_signature ($2, $4, NULL_TREE); - } - - | unaryselector - { - $$ = objc_build_method_signature (NULL_TREE, $1, NULL_TREE); - } - - | '(' objc_typename ')' keywordselector optparmlist - { - $$ = objc_build_method_signature ($2, $4, $5); - } - - | keywordselector optparmlist - { - $$ = objc_build_method_signature (NULL_TREE, $1, $2); - } - ; - -/* Optional ObjC method parameters follow the C syntax, and may include '...' - to denote a variable number of arguments. */ - -optparmlist: - optparms optellipsis - { - TREE_OVERFLOW ($$) = $2; - } - ; - -optparms: - /* NULL */ - { - $$ = make_node (TREE_LIST); - } - | optparms ',' parm - { - $$ = chainon ($1, build_tree_list (NULL_TREE, - grokparm ($3))); - } - ; - -optellipsis: - /* NULL */ - { - $$ = 0; - } - | ',' ELLIPSIS - { - $$ = 1; - } - ; - -unaryselector: - selector - ; - -keywordselector: - keyworddecl - - | keywordselector keyworddecl - { - $$ = chainon ($1, $2); - } - ; - -selector: - IDENTIFIER - | TYPENAME - | CLASSNAME - | reservedwords - ; - -reservedwords: - ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR - | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN - | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF - | TYPESPEC | TYPE_QUAL | OBJC_TYPE_QUAL - ; - -objc_qual: - OBJC_TYPE_QUAL - ; - -objc_quals: - objc_quals objc_qual - { - $$ = chainon ($1, build_tree_list (NULL_TREE, $2)); - } - | /* NULL */ - { - $$ = NULL_TREE; - } - ; - -objc_typename: - objc_quals typename - { - $$ = build_tree_list ($1, groktypename ($2)); - } - | objc_quals - { - $$ = build_tree_list ($1, NULL_TREE); - } - ; - -keyworddecl: - selector ':' '(' objc_typename ')' identifier - { - $$ = objc_build_keyword_decl ($1, $4, $6); - } - - | selector ':' identifier - { - $$ = objc_build_keyword_decl ($1, NULL_TREE, $3); - } - - | ':' '(' objc_typename ')' identifier - { - $$ = objc_build_keyword_decl (NULL_TREE, $3, $5); - } - - | ':' identifier - { - $$ = objc_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 - { - $$ = build_tree_list (NULL_TREE, $2); - } - ; - -receiver: - expr - { $$ = $1.value; } - | CLASSNAME - { - $$ = objc_get_class_reference ($1); - } - | TYPENAME - { - $$ = objc_get_class_reference ($1); - } - ; - -objcmessageexpr: - '[' receiver messageargs ']' - { $$ = build_tree_list ($2, $3); } - ; - -selectorarg: - selector - | keywordnamelist - ; - -keywordnamelist: - keywordname - | keywordnamelist keywordname - { - $$ = chainon ($1, $2); - } - ; - -keywordname: - selector ':' - { - $$ = build_tree_list ($1, NULL_TREE); - } - | ':' - { - $$ = build_tree_list (NULL_TREE, NULL_TREE); - } - ; - -objcselectorexpr: - AT_SELECTOR '(' selectorarg ')' - { - $$ = $3; - } - ; - -objcprotocolexpr: - AT_PROTOCOL '(' identifier ')' - { - $$ = $3; - } - ; - -/* extension to support C-structures in the archiver */ - -objcencodeexpr: - AT_ENCODE '(' typename ')' - { - $$ = groktypename ($3); - } - ; - -@@end_ifobjc -%% - -/* yylex() is a thin wrapper around c_lex(), all it does is translate - cpplib.h's token codes into yacc's token codes. */ - -static enum cpp_ttype last_token; - -/* The reserved keyword table. */ -struct resword -{ - const char *word; - ENUM_BITFIELD(rid) rid : 16; - unsigned int disable : 16; -}; - -/* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is - _true_. */ -#define D_C89 0x01 /* not in C89 */ -#define D_EXT 0x02 /* GCC extension */ -#define D_EXT89 0x04 /* GCC extension incorporated in C99 */ -#define D_OBJC 0x08 /* Objective C only */ - -static const struct resword reswords[] = -{ - { "_Bool", RID_BOOL, 0 }, - { "_Complex", RID_COMPLEX, 0 }, - { "__FUNCTION__", RID_FUNCTION_NAME, 0 }, - { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 }, - { "__alignof", RID_ALIGNOF, 0 }, - { "__alignof__", RID_ALIGNOF, 0 }, - { "__asm", RID_ASM, 0 }, - { "__asm__", RID_ASM, 0 }, - { "__attribute", RID_ATTRIBUTE, 0 }, - { "__attribute__", RID_ATTRIBUTE, 0 }, - { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 }, - { "__builtin_offsetof", RID_OFFSETOF, 0 }, - { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 }, - { "__builtin_va_arg", RID_VA_ARG, 0 }, - { "__complex", RID_COMPLEX, 0 }, - { "__complex__", RID_COMPLEX, 0 }, - { "__const", RID_CONST, 0 }, - { "__const__", RID_CONST, 0 }, - { "__extension__", RID_EXTENSION, 0 }, - { "__func__", RID_C99_FUNCTION_NAME, 0 }, - { "__imag", RID_IMAGPART, 0 }, - { "__imag__", RID_IMAGPART, 0 }, - { "__inline", RID_INLINE, 0 }, - { "__inline__", RID_INLINE, 0 }, - { "__label__", RID_LABEL, 0 }, - { "__real", RID_REALPART, 0 }, - { "__real__", RID_REALPART, 0 }, - { "__restrict", RID_RESTRICT, 0 }, - { "__restrict__", RID_RESTRICT, 0 }, - { "__signed", RID_SIGNED, 0 }, - { "__signed__", RID_SIGNED, 0 }, - { "__thread", RID_THREAD, 0 }, - { "__typeof", RID_TYPEOF, 0 }, - { "__typeof__", RID_TYPEOF, 0 }, - { "__volatile", RID_VOLATILE, 0 }, - { "__volatile__", RID_VOLATILE, 0 }, - { "asm", RID_ASM, D_EXT }, - { "auto", RID_AUTO, 0 }, - { "break", RID_BREAK, 0 }, - { "case", RID_CASE, 0 }, - { "char", RID_CHAR, 0 }, - { "const", RID_CONST, 0 }, - { "continue", RID_CONTINUE, 0 }, - { "default", RID_DEFAULT, 0 }, - { "do", RID_DO, 0 }, - { "double", RID_DOUBLE, 0 }, - { "else", RID_ELSE, 0 }, - { "enum", RID_ENUM, 0 }, - { "extern", RID_EXTERN, 0 }, - { "float", RID_FLOAT, 0 }, - { "for", RID_FOR, 0 }, - { "goto", RID_GOTO, 0 }, - { "if", RID_IF, 0 }, - { "inline", RID_INLINE, D_EXT89 }, - { "int", RID_INT, 0 }, - { "long", RID_LONG, 0 }, - { "register", RID_REGISTER, 0 }, - { "restrict", RID_RESTRICT, D_C89 }, - { "return", RID_RETURN, 0 }, - { "short", RID_SHORT, 0 }, - { "signed", RID_SIGNED, 0 }, - { "sizeof", RID_SIZEOF, 0 }, - { "static", RID_STATIC, 0 }, - { "struct", RID_STRUCT, 0 }, - { "switch", RID_SWITCH, 0 }, - { "typedef", RID_TYPEDEF, 0 }, - { "typeof", RID_TYPEOF, D_EXT }, - { "union", RID_UNION, 0 }, - { "unsigned", RID_UNSIGNED, 0 }, - { "void", RID_VOID, 0 }, - { "volatile", RID_VOLATILE, 0 }, - { "while", RID_WHILE, 0 }, - -@@ifobjc - - /* These objc keywords are recognized only immediately after - an '@'. */ - { "class", RID_AT_CLASS, D_OBJC }, - { "compatibility_alias", RID_AT_ALIAS, D_OBJC }, - { "defs", RID_AT_DEFS, D_OBJC }, - { "encode", RID_AT_ENCODE, D_OBJC }, - { "end", RID_AT_END, D_OBJC }, - { "implementation", RID_AT_IMPLEMENTATION, D_OBJC }, - { "interface", RID_AT_INTERFACE, D_OBJC }, - { "private", RID_AT_PRIVATE, D_OBJC }, - { "protected", RID_AT_PROTECTED, D_OBJC }, - { "protocol", RID_AT_PROTOCOL, D_OBJC }, - { "public", RID_AT_PUBLIC, D_OBJC }, - { "selector", RID_AT_SELECTOR, D_OBJC }, - { "throw", RID_AT_THROW, D_OBJC }, - { "try", RID_AT_TRY, D_OBJC }, - { "catch", RID_AT_CATCH, D_OBJC }, - { "finally", RID_AT_FINALLY, D_OBJC }, - { "synchronized", RID_AT_SYNCHRONIZED, D_OBJC }, - /* These are recognized only in protocol-qualifier context - (see above) */ - { "bycopy", RID_BYCOPY, D_OBJC }, - { "byref", RID_BYREF, D_OBJC }, - { "in", RID_IN, D_OBJC }, - { "inout", RID_INOUT, D_OBJC }, - { "oneway", RID_ONEWAY, D_OBJC }, - { "out", RID_OUT, D_OBJC }, -@@end_ifobjc -}; -#define N_reswords (sizeof reswords / sizeof (struct resword)) - -/* Table mapping from RID_* constants to yacc token numbers. - Unfortunately we have to have entries for all the keywords in all - three languages. */ -static const short rid_to_yy[RID_MAX] = -{ - /* RID_STATIC */ STATIC, - /* RID_UNSIGNED */ TYPESPEC, - /* RID_LONG */ TYPESPEC, - /* RID_CONST */ TYPE_QUAL, - /* RID_EXTERN */ SCSPEC, - /* RID_REGISTER */ SCSPEC, - /* RID_TYPEDEF */ SCSPEC, - /* RID_SHORT */ TYPESPEC, - /* RID_INLINE */ SCSPEC, - /* RID_VOLATILE */ TYPE_QUAL, - /* RID_SIGNED */ TYPESPEC, - /* RID_AUTO */ SCSPEC, - /* RID_RESTRICT */ TYPE_QUAL, - - /* C extensions */ - /* RID_COMPLEX */ TYPESPEC, - /* RID_THREAD */ SCSPEC, - - /* C++ */ - /* RID_FRIEND */ 0, - /* RID_VIRTUAL */ 0, - /* RID_EXPLICIT */ 0, - /* RID_EXPORT */ 0, - /* RID_MUTABLE */ 0, - - /* ObjC */ - /* RID_IN */ OBJC_TYPE_QUAL, - /* RID_OUT */ OBJC_TYPE_QUAL, - /* RID_INOUT */ OBJC_TYPE_QUAL, - /* RID_BYCOPY */ OBJC_TYPE_QUAL, - /* RID_BYREF */ OBJC_TYPE_QUAL, - /* RID_ONEWAY */ OBJC_TYPE_QUAL, - - /* C */ - /* RID_INT */ TYPESPEC, - /* RID_CHAR */ TYPESPEC, - /* RID_FLOAT */ TYPESPEC, - /* RID_DOUBLE */ TYPESPEC, - /* RID_VOID */ TYPESPEC, - /* RID_ENUM */ ENUM, - /* RID_STRUCT */ STRUCT, - /* RID_UNION */ UNION, - /* RID_IF */ IF, - /* RID_ELSE */ ELSE, - /* RID_WHILE */ WHILE, - /* RID_DO */ DO, - /* RID_FOR */ FOR, - /* RID_SWITCH */ SWITCH, - /* RID_CASE */ CASE, - /* RID_DEFAULT */ DEFAULT, - /* RID_BREAK */ BREAK, - /* RID_CONTINUE */ CONTINUE, - /* RID_RETURN */ RETURN, - /* RID_GOTO */ GOTO, - /* RID_SIZEOF */ SIZEOF, - - /* C extensions */ - /* RID_ASM */ ASM_KEYWORD, - /* RID_TYPEOF */ TYPEOF, - /* RID_ALIGNOF */ ALIGNOF, - /* RID_ATTRIBUTE */ ATTRIBUTE, - /* RID_VA_ARG */ VA_ARG, - /* RID_EXTENSION */ EXTENSION, - /* RID_IMAGPART */ IMAGPART, - /* RID_REALPART */ REALPART, - /* RID_LABEL */ LABEL, - - /* RID_CHOOSE_EXPR */ CHOOSE_EXPR, - /* RID_TYPES_COMPATIBLE_P */ TYPES_COMPATIBLE_P, - - /* RID_FUNCTION_NAME */ FUNC_NAME, - /* RID_PRETTY_FUNCTION_NAME */ FUNC_NAME, - /* RID_C99_FUNCTION_NAME */ FUNC_NAME, - - /* C++ */ - /* RID_BOOL */ TYPESPEC, - /* RID_WCHAR */ 0, - /* RID_CLASS */ 0, - /* RID_PUBLIC */ 0, - /* RID_PRIVATE */ 0, - /* RID_PROTECTED */ 0, - /* RID_TEMPLATE */ 0, - /* RID_NULL */ 0, - /* RID_CATCH */ 0, - /* RID_DELETE */ 0, - /* RID_FALSE */ 0, - /* RID_NAMESPACE */ 0, - /* RID_NEW */ 0, - /* RID_OFFSETOF */ OFFSETOF, - /* RID_OPERATOR */ 0, - /* RID_THIS */ 0, - /* RID_THROW */ 0, - /* RID_TRUE */ 0, - /* RID_TRY */ 0, - /* RID_TYPENAME */ 0, - /* RID_TYPEID */ 0, - /* RID_USING */ 0, - - /* casts */ - /* RID_CONSTCAST */ 0, - /* RID_DYNCAST */ 0, - /* RID_REINTCAST */ 0, - /* RID_STATCAST */ 0, - - /* Objective C */ - /* RID_AT_ENCODE */ AT_ENCODE, - /* RID_AT_END */ AT_END, - /* RID_AT_CLASS */ AT_CLASS, - /* RID_AT_ALIAS */ AT_ALIAS, - /* RID_AT_DEFS */ AT_DEFS, - /* RID_AT_PRIVATE */ AT_PRIVATE, - /* RID_AT_PROTECTED */ AT_PROTECTED, - /* RID_AT_PUBLIC */ AT_PUBLIC, - /* RID_AT_PROTOCOL */ AT_PROTOCOL, - /* RID_AT_SELECTOR */ AT_SELECTOR, - /* RID_AT_THROW */ AT_THROW, - /* RID_AT_TRY */ AT_TRY, - /* RID_AT_CATCH */ AT_CATCH, - /* RID_AT_FINALLY */ AT_FINALLY, - /* RID_AT_SYNCHRONIZED */ AT_SYNCHRONIZED, - /* RID_AT_INTERFACE */ AT_INTERFACE, - /* RID_AT_IMPLEMENTATION */ AT_IMPLEMENTATION -}; - -static void -init_reswords (void) -{ - unsigned int i; - tree id; - int mask = (flag_isoc99 ? 0 : D_C89) - | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0); - - if (!c_dialect_objc ()) - mask |= D_OBJC; - - ridpointers = GGC_CNEWVEC (tree, (int) RID_MAX); - for (i = 0; i < N_reswords; i++) - { - /* If a keyword is disabled, do not enter it into the table - and so create a canonical spelling that isn't a keyword. */ - if (reswords[i].disable & mask) - continue; - - id = get_identifier (reswords[i].word); - C_RID_CODE (id) = reswords[i].rid; - C_IS_RESERVED_WORD (id) = 1; - ridpointers [(int) reswords[i].rid] = id; - } -} - -#define NAME(type) cpp_type2name (type) - -static void -yyerror (const char *msgid) -{ - c_parse_error (msgid, last_token, yylval.ttype); -} - -static int -yylexname (void) -{ - tree decl; - -@@ifobjc - int objc_force_identifier = objc_need_raw_identifier; - OBJC_NEED_RAW_IDENTIFIER (0); -@@end_ifobjc - - if (C_IS_RESERVED_WORD (yylval.ttype)) - { - enum rid rid_code = C_RID_CODE (yylval.ttype); - -@@ifobjc - if (!OBJC_IS_AT_KEYWORD (rid_code) - && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context)) -@@end_ifobjc - { - /* Return the canonical spelling for this keyword. */ - yylval.ttype = ridpointers[(int) rid_code]; - return rid_to_yy[(int) rid_code]; - } - } - - decl = lookup_name (yylval.ttype); - if (decl) - { - if (TREE_CODE (decl) == TYPE_DECL) - return TYPENAME; - } -@@ifobjc - else - { - tree objc_interface_decl = objc_is_class_name (yylval.ttype); - /* ObjC class names are in the same namespace as variables and - typedefs, and hence are shadowed by local declarations. */ - if (objc_interface_decl - && (global_bindings_p () - || (!objc_force_identifier && !decl))) - { - yylval.ttype = objc_interface_decl; - return CLASSNAME; - } - } -@@end_ifobjc - - return IDENTIFIER; -} - -static inline int -_yylex (void) -{ - get_next: - last_token = c_lex (&yylval.ttype); - switch (last_token) - { - case CPP_EQ: return '='; - case CPP_NOT: return '!'; - case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE; - case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE; - case CPP_PLUS: yylval.code = PLUS_EXPR; return '+'; - case CPP_MINUS: yylval.code = MINUS_EXPR; return '-'; - case CPP_MULT: yylval.code = MULT_EXPR; return '*'; - case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/'; - case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%'; - case CPP_AND: yylval.code = BIT_AND_EXPR; return '&'; - case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|'; - case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^'; - case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT; - case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT; - - case CPP_COMPL: return '~'; - case CPP_AND_AND: return ANDAND; - case CPP_OR_OR: return OROR; - case CPP_QUERY: return '?'; - case CPP_OPEN_PAREN: return '('; - case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE; - case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE; - case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE; - case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE; - - case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN; - case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN; - case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN; - case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN; - case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN; - case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN; - case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN; - case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN; - case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN; - case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN; - - case CPP_OPEN_SQUARE: return '['; - case CPP_CLOSE_SQUARE: return ']'; - case CPP_OPEN_BRACE: return '{'; - case CPP_CLOSE_BRACE: return '}'; - case CPP_ELLIPSIS: return ELLIPSIS; - - case CPP_PLUS_PLUS: return PLUSPLUS; - case CPP_MINUS_MINUS: return MINUSMINUS; - case CPP_DEREF: return POINTSAT; - case CPP_DOT: return '.'; - - /* The following tokens may affect the interpretation of any - identifiers following, if doing Objective-C. */ - case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':'; - case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ','; - case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')'; - case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';'; - - case CPP_EOF: - return 0; - - case CPP_NAME: - return yylexname (); - - case CPP_AT_NAME: - /* This only happens in Objective-C; it must be a keyword. */ - return rid_to_yy [(int) C_RID_CODE (yylval.ttype)]; - - case CPP_NUMBER: - case CPP_CHAR: - case CPP_WCHAR: - return CONSTANT; - - case CPP_STRING: - case CPP_WSTRING: - return STRING; - - case CPP_OBJC_STRING: - return OBJC_STRING; - - /* These tokens are C++ specific (and will not be generated - in C mode, but let's be cautious). */ - case CPP_SCOPE: - case CPP_DEREF_STAR: - case CPP_DOT_STAR: - case CPP_MIN_EQ: - case CPP_MAX_EQ: - case CPP_MIN: - case CPP_MAX: - /* These tokens should not survive translation phase 4. */ - case CPP_HASH: - case CPP_PASTE: - error ("syntax error at %qs token", NAME(last_token)); - goto get_next; - - default: - abort (); - } - /* NOTREACHED */ -} - -static int -yylex (void) -{ - int r; - timevar_push (TV_LEX); - r = _yylex(); - timevar_pop (TV_LEX); - return r; -} - -/* Function used when yydebug is set, to print a token in more detail. */ - -static void -yyprint (FILE *file, int yychar, YYSTYPE yyl) -{ - tree t = yyl.ttype; - - fprintf (file, " [%s]", NAME(last_token)); - - switch (yychar) - { - case IDENTIFIER: - case TYPENAME: - case TYPESPEC: - case TYPE_QUAL: - case SCSPEC: - case STATIC: - if (IDENTIFIER_POINTER (t)) - fprintf (file, " '%s'", IDENTIFIER_POINTER (t)); - break; - - case CONSTANT: - fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t)))); - if (TREE_CODE (t) == INTEGER_CST) - { - fputs (" ", file); - fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX, - TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t)); - } - break; - } -} - -/* This is not the ideal place to put this, but we have to get it out - of c-lex.c because cp/lex.c has its own version. */ - -/* Parse the file. */ -void -c_parse_file (void) -{ - yyparse (); - - if (malloced_yyss) - { - free (malloced_yyss); - free (malloced_yyvs); - malloced_yyss = 0; - } -} - -#ifdef __XGETTEXT__ -/* Depending on the version of Bison used to compile this grammar, - it may issue generic diagnostics spelled "syntax error" or - "parse error". To prevent this from changing the translation - template randomly, we list all the variants of this particular - diagnostic here. Translators: there is no fine distinction - between diagnostics with "syntax error" in them, and diagnostics - with "parse error" in them. It's okay to give them both the same - translation. */ -const char d1[] = N_("syntax error"); -const char d2[] = N_("parse error"); -const char d3[] = N_("syntax error; also virtual memory exhausted"); -const char d4[] = N_("parse error; also virtual memory exhausted"); -const char d5[] = N_("syntax error: cannot back up"); -const char d6[] = N_("parse error: cannot back up"); -#endif - -#include "gt-c-parse.h" |