/* YACC parser for C syntax and for Objective C. -*-c-*-
- Copyright (C) 1987, 1988, 1989, 1992 Free Software Foundation, Inc.
+ Copyright (C) 1987, 88, 89, 92-98, 1999 Free Software Foundation, Inc.
This file is part of GNU CC.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+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.
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. */
+ written by AT&T, but I have never seen it. */
ifobjc
-%expect 20
+%expect 73
end ifobjc
ifc
-%expect 8
-
-/* These are the 8 conflicts you should get in parse.output;
- the state numbers may vary if minor changes in the grammar are made.
-
-State 41 contains 1 shift/reduce conflict. (Two ways to recover from error.)
-State 92 contains 1 shift/reduce conflict. (Two ways to recover from error.)
-State 99 contains 1 shift/reduce conflict. (Two ways to recover from error.)
-State 103 contains 1 shift/reduce conflict. (Two ways to recover from error.)
-State 119 contains 1 shift/reduce conflict. (See comment at component_decl.)
-State 183 contains 1 shift/reduce conflict. (Two ways to recover from error.)
-State 193 contains 1 shift/reduce conflict. (Two ways to recover from error.)
-State 199 contains 1 shift/reduce conflict. (Two ways to recover from error.)
-*/
+%expect 52
end ifc
%{
-#include <stdio.h>
-#include <errno.h>
-#include <setjmp.h>
-
#include "config.h"
+#include "system.h"
+#include <setjmp.h>
#include "tree.h"
#include "input.h"
#include "c-lex.h"
#include "c-tree.h"
#include "flags.h"
-
+#include "output.h"
+#include "toplev.h"
+#include "ggc.h"
+
#ifdef MULTIBYTE_CHARS
-#include <stdlib.h>
#include <locale.h>
#endif
/* Since parsers are distinct for each language, put the language string
definition here. */
ifobjc
-char *language_string = "GNU Obj-C";
+const char * const language_string = "GNU Obj-C";
end ifobjc
ifc
-char *language_string = "GNU C";
+const char * const language_string = "GNU C";
end ifc
-#ifndef errno
-extern int errno;
-#endif
-
-void yyerror ();
-
/* Like YYERROR but do call yyerror. */
#define YYERROR1 { yyerror ("syntax error"); YYERROR; }
%start program
%union {long itype; tree ttype; enum tree_code code;
- char *filename; int lineno; }
+ char *filename; int lineno; int ends_in_label; }
/* All identifiers that are not reserved words
and are not declared typedefs in the current block */
yylval contains an IDENTIFIER_NODE which indicates which one. */
%token TYPESPEC
-/* Reserved words that qualify type: "const" or "volatile".
+/* Reserved words that qualify type: "const", "volatile", or "restrict".
yylval contains an IDENTIFIER_NODE which indicates which one. */
%token TYPE_QUAL
/* 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 ALIGN
+%token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
%token ATTRIBUTE EXTENSION LABEL
-%token REALPART IMAGPART
+%token REALPART IMAGPART VA_ARG
+
+/* Used in c-lex.c for parsing pragmas. */
+%token END_OF_LINE
/* Add precedence rules to solve dangling else s/r conflict */
%nonassoc IF
%type <ttype> typed_declspecs reserved_declspecs
%type <ttype> typed_typespecs reserved_typespecquals
%type <ttype> declmods typespec typespecqual_reserved
+%type <ttype> typed_declspecs_no_prefix_attr reserved_declspecs_no_prefix_attr
+%type <ttype> declmods_no_prefix_attr
%type <ttype> SCSPEC TYPESPEC TYPE_QUAL nonempty_type_quals maybe_type_qual
%type <ttype> initdecls notype_initdecls initdcl notype_initdcl
-%type <ttype> init initlist maybeasm
+%type <ttype> init maybeasm
%type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
-%type <ttype> maybe_attribute attribute_list attrib
+%type <ttype> maybe_attribute attributes attribute attribute_list attrib
+%type <ttype> any_word
-%type <ttype> compstmt
+%type <ttype> compstmt compstmt_nostart compstmt_primary_start
%type <ttype> declarator
%type <ttype> notype_declarator after_type_declarator
%type <ttype> structsp component_decl_list component_decl_list2
%type <ttype> component_decl components component_declarator
%type <ttype> enumlist enumerator
+%type <ttype> struct_head union_head enum_head
%type <ttype> typename absdcl absdcl1 type_quals
%type <ttype> xexpr parms parm identifiers
%type <itype> setspecs
+%type <ends_in_label> lineno_stmt_or_label lineno_stmt_or_labels stmt_or_label
+
%type <filename> save_filename
%type <lineno> save_lineno
\f
%type <ttype> keywordexpr keywordarglist keywordarg
%type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
%type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
-%type <ttype> objc_string protocolrefs identifier_list objcprotocolexpr
+%type <ttype> objc_string non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
+
%type <ttype> CLASSNAME OBJC_STRING OBJECTNAME
end ifobjc
\f
%{
-/* Number of statements (loosely speaking) seen so far. */
+/* Number of statements (loosely speaking) and compound statements
+ seen so far. */
static int stmt_count;
-
+static int compstmt_count;
+
/* Input file and line number of the end of the body of last simple_if;
used by the stmt-rule immediately after simple_if returns. */
static char *if_stmt_file;
static int if_stmt_line;
/* List of types and structure classes of the current declaration. */
-static tree current_declspecs;
+static tree current_declspecs = NULL_TREE;
+static tree prefix_attributes = NULL_TREE;
-/* Stack of saved values of current_declspecs. */
+/* Stack of saved values of current_declspecs and prefix_attributes. */
static tree declspec_stack;
/* 1 if we explained undeclared var errors. */
/* Tell yyparse how to print a token's value, if yydebug is set. */
#define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
-extern void yyprint ();
+extern void yyprint PROTO ((FILE *, int, YYSTYPE));
+
+/* Add GC roots for variables local to this file. */
+void
+c_parse_init ()
+{
+ ggc_add_tree_root (&declspec_stack, 1);
+ ggc_add_tree_root (¤t_declspecs, 1);
+ ggc_add_tree_root (&prefix_attributes, 1);
+}
+
%}
\f
%%
program: /* empty */
{ if (pedantic)
pedwarn ("ANSI C forbids an empty source file");
-ifobjc
- objc_finish ();
-end ifobjc
+ finish_file ();
}
| extdefs
{
get us back to the global binding level. */
while (! global_bindings_p ())
poplevel (0, 0, 0);
-ifobjc
- objc_finish ();
-end ifobjc
+ finish_file ();
}
;
assemble_asm ($3);
else
error ("argument of `asm' is not a constant string"); }
+ | extension extdef
+ { pedantic = $<itype>1; }
;
datadef:
{ if (pedantic)
error ("ANSI C forbids data definition with no type or storage class");
else if (!flag_traditional)
- warning ("data definition has no type or storage class"); }
+ warning ("data definition has no type or storage class");
+
+ current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
+ declspec_stack = TREE_CHAIN (declspec_stack);
+ resume_momentary ($1); }
| declmods setspecs notype_initdecls ';'
- {}
+ { current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
+ declspec_stack = TREE_CHAIN (declspec_stack);
+ resume_momentary ($2); }
| typed_declspecs setspecs initdecls ';'
- {}
+ { current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
+ declspec_stack = TREE_CHAIN (declspec_stack);
+ resume_momentary ($2); }
| declmods ';'
{ pedwarn ("empty declaration"); }
| typed_declspecs ';'
\f
fndef:
typed_declspecs setspecs declarator
- { if (! start_function ($1, $3, 0))
+ { if (! start_function (current_declspecs, $3,
+ prefix_attributes, NULL_TREE, 0))
YYERROR1;
reinit_parse_for_function (); }
- xdecls
+ old_style_parm_decls
{ store_parm_decls (); }
compstmt_or_error
- { finish_function (0); }
+ { finish_function (0);
+ current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
+ declspec_stack = TREE_CHAIN (declspec_stack);
+ resume_momentary ($2); }
| typed_declspecs setspecs declarator error
- { }
+ { current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
+ declspec_stack = TREE_CHAIN (declspec_stack);
+ resume_momentary ($2); }
| declmods setspecs notype_declarator
- { if (! start_function ($1, $3, 0))
+ { if (! start_function (current_declspecs, $3,
+ prefix_attributes, NULL_TREE, 0))
YYERROR1;
reinit_parse_for_function (); }
- xdecls
+ old_style_parm_decls
{ store_parm_decls (); }
compstmt_or_error
- { finish_function (0); }
+ { finish_function (0);
+ current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
+ declspec_stack = TREE_CHAIN (declspec_stack);
+ resume_momentary ($2); }
| declmods setspecs notype_declarator error
- { }
+ { current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
+ declspec_stack = TREE_CHAIN (declspec_stack);
+ resume_momentary ($2); }
| setspecs notype_declarator
- { if (! start_function (NULL_TREE, $2, 0))
+ { if (! start_function (NULL_TREE, $2,
+ prefix_attributes, NULL_TREE, 0))
YYERROR1;
reinit_parse_for_function (); }
- xdecls
+ old_style_parm_decls
{ store_parm_decls (); }
compstmt_or_error
- { finish_function (0); }
+ { finish_function (0);
+ current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
+ declspec_stack = TREE_CHAIN (declspec_stack);
+ resume_momentary ($1); }
| setspecs notype_declarator error
- { }
+ { current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
+ declspec_stack = TREE_CHAIN (declspec_stack);
+ resume_momentary ($1); }
;
identifier:
| '*' cast_expr %prec UNARY
{ $$ = build_indirect_ref ($2, "unary *"); }
/* __extension__ turns off -pedantic for following primary. */
- | EXTENSION
- { $<itype>1 = pedantic;
- pedantic = 0; }
- cast_expr %prec UNARY
- { $$ = $3;
+ | extension cast_expr %prec UNARY
+ { $$ = $2;
pedantic = $<itype>1; }
| unop cast_expr %prec UNARY
{ $$ = build_unary_op ($1, $2, 0);
/* Refer to the address of a label as a pointer. */
| ANDAND identifier
{ tree label = lookup_label ($2);
+ if (pedantic)
+ pedwarn ("ANSI C forbids `&&'");
if (label == 0)
$$ = null_pointer_node;
else
$$ = build_unary_op (ADDR_EXPR, $$, 0);
} }
*/
- | SIZEOF unary_expr %prec UNARY
- { if (TREE_CODE ($2) == COMPONENT_REF
- && DECL_BIT_FIELD (TREE_OPERAND ($2, 1)))
+ | sizeof unary_expr %prec UNARY
+ { skip_evaluation--;
+ if (TREE_CODE ($2) == COMPONENT_REF
+ && DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
error ("`sizeof' applied to a bit-field");
$$ = c_sizeof (TREE_TYPE ($2)); }
- | SIZEOF '(' typename ')' %prec HYPERUNARY
- { $$ = c_sizeof (groktypename ($3)); }
- | ALIGNOF unary_expr %prec UNARY
- { $$ = c_alignof_expr ($2); }
- | ALIGNOF '(' typename ')' %prec HYPERUNARY
- { $$ = c_alignof (groktypename ($3)); }
+ | sizeof '(' typename ')' %prec HYPERUNARY
+ { skip_evaluation--;
+ $$ = c_sizeof (groktypename ($3)); }
+ | alignof unary_expr %prec UNARY
+ { skip_evaluation--;
+ $$ = c_alignof_expr ($2); }
+ | alignof '(' typename ')' %prec HYPERUNARY
+ { skip_evaluation--;
+ $$ = c_alignof (groktypename ($3)); }
| REALPART cast_expr %prec UNARY
{ $$ = build_unary_op (REALPART_EXPR, $2, 0); }
| IMAGPART cast_expr %prec UNARY
{ $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
+ | VA_ARG '(' expr_no_commas ',' typename ')'
+ { $$ = build_va_arg ($3, groktypename ($5)); }
+ ;
+
+sizeof:
+ SIZEOF { skip_evaluation++; }
+ ;
+
+alignof:
+ ALIGNOF { skip_evaluation++; }
;
cast_expr:
| '(' typename ')' cast_expr %prec UNARY
{ tree type = groktypename ($2);
$$ = build_c_cast (type, $4); }
- | '(' typename ')' '{' initlist maybecomma '}' %prec UNARY
- { tree type = groktypename ($2);
- char *name;
- if (pedantic)
+ | '(' typename ')' '{'
+ { start_init (NULL_TREE, NULL, 0);
+ $2 = groktypename ($2);
+ really_start_incremental_init ($2); }
+ initlist_maybe_comma '}' %prec UNARY
+ { char *name;
+ tree result = pop_init_level (0);
+ tree type = $2;
+ finish_init ();
+
+ if (pedantic && ! flag_isoc9x)
pedwarn ("ANSI C forbids constructor expressions");
if (TYPE_NAME (type) != 0)
{
}
else
name = "";
- $$ = digest_init (type, build_nt (CONSTRUCTOR, NULL_TREE, nreverse ($5)),
- NULL_PTR, 0, 0, name);
+ $$ = result;
if (TREE_CODE (type) == ARRAY_TYPE && TYPE_SIZE (type) == 0)
{
int failure = complete_array_type (type, $$, 1);
{ $$ = parser_build_binary_op ($2, $1, $3); }
| expr_no_commas '^' expr_no_commas
{ $$ = parser_build_binary_op ($2, $1, $3); }
- | expr_no_commas ANDAND expr_no_commas
- { $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $3); }
- | expr_no_commas OROR expr_no_commas
- { $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $3); }
- | expr_no_commas '?' xexpr ':' expr_no_commas
- { $$ = build_conditional_expr ($1, $3, $5); }
+ | expr_no_commas ANDAND
+ { $1 = truthvalue_conversion (default_conversion ($1));
+ skip_evaluation += $1 == boolean_false_node; }
+ expr_no_commas
+ { skip_evaluation -= $1 == boolean_false_node;
+ $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
+ | expr_no_commas OROR
+ { $1 = truthvalue_conversion (default_conversion ($1));
+ skip_evaluation += $1 == boolean_true_node; }
+ expr_no_commas
+ { skip_evaluation -= $1 == boolean_true_node;
+ $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
+ | expr_no_commas '?'
+ { $1 = truthvalue_conversion (default_conversion ($1));
+ skip_evaluation += $1 == boolean_false_node; }
+ expr ':'
+ { skip_evaluation += (($1 == boolean_true_node)
+ - ($1 == boolean_false_node)); }
+ expr_no_commas
+ { skip_evaluation -= $1 == boolean_true_node;
+ $$ = build_conditional_expr ($1, $4, $7); }
+ | expr_no_commas '?'
+ { if (pedantic)
+ pedwarn ("ANSI C forbids omitting the middle term of a ?: expression");
+ /* Make sure first operand is calculated only once. */
+ $<ttype>2 = save_expr ($1);
+ $1 = truthvalue_conversion (default_conversion ($<ttype>2));
+ skip_evaluation += $1 == boolean_true_node; }
+ ':' expr_no_commas
+ { skip_evaluation -= $1 == boolean_true_node;
+ $$ = build_conditional_expr ($1, $<ttype>2, $5); }
| expr_no_commas '=' expr_no_commas
- { $$ = build_modify_expr ($1, NOP_EXPR, $3);
- C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR); }
+ { char class;
+ $$ = build_modify_expr ($1, NOP_EXPR, $3);
+ class = TREE_CODE_CLASS (TREE_CODE ($$));
+ if (class == 'e' || class == '1'
+ || class == '2' || class == '<')
+ C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
+ }
| expr_no_commas ASSIGN expr_no_commas
- { $$ = build_modify_expr ($1, $2, $3);
+ { char class;
+ $$ = build_modify_expr ($1, $2, $3);
/* This inhibits warnings in truthvalue_conversion. */
- C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK); }
+ class = TREE_CODE_CLASS (TREE_CODE ($$));
+ if (class == 'e' || class == '1'
+ || class == '2' || class == '<')
+ C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
+ }
;
primary:
IDENTIFIER
{
- tree context;
-
$$ = lastiddecl;
if (!$$ || $$ == error_mark_node)
{
if (IDENTIFIER_GLOBAL_VALUE ($1) != error_mark_node
|| IDENTIFIER_ERROR_LOCUS ($1) != current_function_decl)
{
- error ("`%s' undeclared (first use this function)",
+ error ("`%s' undeclared (first use in this function)",
IDENTIFIER_POINTER ($1));
if (! undeclared_variable_notice)
$$ = $2; }
| '(' error ')'
{ $$ = error_mark_node; }
- | '('
- { if (current_function_decl == 0)
- {
- error ("braced-group within expression allowed only inside a function");
- YYERROR;
- }
- /* We must force a BLOCK for this level
- so that, if it is not expanded later,
- there is a way to turn off the entire subtree of blocks
- that are contained in it. */
- keep_next_level ();
- push_iterator_stack ();
- push_label_level ();
- $<ttype>$ = expand_start_stmt_expr (); }
- compstmt ')'
+ | compstmt_primary_start compstmt_nostart ')'
{ tree rtl_exp;
if (pedantic)
pedwarn ("ANSI C forbids braced-groups within expressions");
pop_iterator_stack ();
pop_label_level ();
- rtl_exp = expand_end_stmt_expr ($<ttype>2);
+ rtl_exp = expand_end_stmt_expr ($1);
/* The statements have side effects, so the group does. */
TREE_SIDE_EFFECTS (rtl_exp) = 1;
- /* Make a BIND_EXPR for the BLOCK already made. */
- $$ = build (BIND_EXPR, TREE_TYPE (rtl_exp),
- NULL_TREE, rtl_exp, $3);
- /* Remove the block from the tree at this point.
- It gets put back at the proper place
- when the BIND_EXPR is expanded. */
- delete_block ($3);
+ if (TREE_CODE ($2) == BLOCK)
+ {
+ /* Make a BIND_EXPR for the BLOCK already made. */
+ $$ = build (BIND_EXPR, TREE_TYPE (rtl_exp),
+ NULL_TREE, rtl_exp, $2);
+ /* Remove the block from the tree at this point.
+ It gets put back at the proper place
+ when the BIND_EXPR is expanded. */
+ delete_block ($2);
+ }
+ else
+ $$ = $2;
+ }
+ | compstmt_primary_start error ')'
+ {
+ /* Make sure we call expand_end_stmt_expr. Otherwise
+ we are likely to lose sequences and crash later. */
+ pop_iterator_stack ();
+ pop_label_level ();
+ expand_end_stmt_expr ($1);
+ $$ = error_mark_node;
}
| primary '(' exprlist ')' %prec '.'
{ $$ = build_function_call ($1, $3); }
;
ifobjc
-/* Produces an OBJC_STRING_CST with prehaps more OBJC_STRING_CSTs chained
+/* Produces an OBJC_STRING_CST with perhaps more OBJC_STRING_CSTs chained
onto it. */
objc_string:
OBJC_STRING
;
end ifobjc
-xdecls:
+old_style_parm_decls:
/* empty */
| datadecls
| datadecls ELLIPSIS
| lineno_datadecl errstmt
;
+/* We don't allow prefix attributes here because they cause reduce/reduce
+ conflicts: we can't know whether we're parsing a function decl with
+ attribute suffix, or function defn with attribute prefix on first old
+ style parm. */
datadecl:
- typed_declspecs setspecs initdecls ';'
+ typed_declspecs_no_prefix_attr setspecs initdecls ';'
{ current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
declspec_stack = TREE_CHAIN (declspec_stack);
resume_momentary ($2); }
- | declmods setspecs notype_initdecls ';'
- { current_declspecs = TREE_VALUE (declspec_stack);
+ | declmods_no_prefix_attr setspecs notype_initdecls ';'
+ { current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
declspec_stack = TREE_CHAIN (declspec_stack);
resume_momentary ($2); }
- | typed_declspecs ';'
+ | typed_declspecs_no_prefix_attr ';'
{ shadow_tag_warned ($1, 1);
pedwarn ("empty declaration"); }
- | declmods ';'
+ | declmods_no_prefix_attr ';'
{ pedwarn ("empty declaration"); }
;
setspecs: /* empty */
{ $$ = suspend_momentary ();
pending_xref_error ();
- declspec_stack = tree_cons (NULL_TREE, current_declspecs,
+ declspec_stack = tree_cons (prefix_attributes,
+ current_declspecs,
declspec_stack);
- current_declspecs = $<ttype>0; }
+ split_specs_attrs ($<ttype>0,
+ ¤t_declspecs, &prefix_attributes); }
+ ;
+
+/* ??? Yuck. See after_type_declarator. */
+setattrs: /* empty */
+ { prefix_attributes = chainon (prefix_attributes, $<ttype>0); }
;
decl:
typed_declspecs setspecs initdecls ';'
{ current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
declspec_stack = TREE_CHAIN (declspec_stack);
resume_momentary ($2); }
| declmods setspecs notype_initdecls ';'
{ current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
declspec_stack = TREE_CHAIN (declspec_stack);
resume_momentary ($2); }
| typed_declspecs setspecs nested_function
{ current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
declspec_stack = TREE_CHAIN (declspec_stack);
resume_momentary ($2); }
| declmods setspecs notype_nested_function
{ current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
declspec_stack = TREE_CHAIN (declspec_stack);
resume_momentary ($2); }
| typed_declspecs ';'
{ shadow_tag ($1); }
| declmods ';'
{ pedwarn ("empty declaration"); }
+ | extension decl
+ { pedantic = $<itype>1; }
;
/* Declspecs which contain at least one type specifier or typedef name.
(Just `const' or `volatile' is not enough.)
- A typedef'd name following these is taken as a name to be declared. */
+ A typedef'd name following these is taken as a name to be declared.
+ Declspecs have a non-NULL TREE_VALUE, attributes do not. */
typed_declspecs:
typespec reserved_declspecs
warning ("`%s' is not at beginning of declaration",
IDENTIFIER_POINTER ($2));
$$ = tree_cons (NULL_TREE, $2, $1); }
+ | reserved_declspecs attributes
+ { $$ = tree_cons ($2, NULL_TREE, $1); }
;
-/* List of just storage classes and type modifiers.
+typed_declspecs_no_prefix_attr:
+ typespec reserved_declspecs_no_prefix_attr
+ { $$ = tree_cons (NULL_TREE, $1, $2); }
+ | declmods_no_prefix_attr typespec reserved_declspecs_no_prefix_attr
+ { $$ = chainon ($3, tree_cons (NULL_TREE, $2, $1)); }
+ ;
+
+reserved_declspecs_no_prefix_attr:
+ /* empty */
+ { $$ = NULL_TREE; }
+ | reserved_declspecs_no_prefix_attr typespecqual_reserved
+ { $$ = tree_cons (NULL_TREE, $2, $1); }
+ | reserved_declspecs_no_prefix_attr SCSPEC
+ { if (extra_warnings)
+ warning ("`%s' is not at beginning of declaration",
+ IDENTIFIER_POINTER ($2));
+ $$ = tree_cons (NULL_TREE, $2, $1); }
+ ;
+
+/* List of just storage classes, type modifiers, and prefix attributes.
A declaration can start with just this, but then it cannot be used
- to redeclare a typedef-name. */
+ to redeclare a typedef-name.
+ Declspecs have a non-NULL TREE_VALUE, attributes do not. */
declmods:
+ declmods_no_prefix_attr
+ { $$ = $1; }
+ | attributes
+ { $$ = tree_cons ($1, NULL_TREE, NULL_TREE); }
+ | declmods declmods_no_prefix_attr
+ { $$ = chainon ($2, $1); }
+ | declmods attributes
+ { $$ = tree_cons ($2, NULL_TREE, $1); }
+ ;
+
+declmods_no_prefix_attr:
TYPE_QUAL
{ $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
TREE_STATIC ($$) = 1; }
| SCSPEC
{ $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
- | declmods TYPE_QUAL
+ | declmods_no_prefix_attr TYPE_QUAL
{ $$ = tree_cons (NULL_TREE, $2, $1);
TREE_STATIC ($$) = 1; }
- | declmods SCSPEC
+ | declmods_no_prefix_attr SCSPEC
{ if (extra_warnings && TREE_STATIC ($1))
warning ("`%s' is not at beginning of declaration",
IDENTIFIER_POINTER ($2));
{ $$ = get_static_reference ($1, $2); }
| OBJECTNAME protocolrefs
{ $$ = get_object_reference ($2); }
+
+/* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
+ - nisse@lysator.liu.se */
+ | non_empty_protocolrefs
+ { $$ = get_object_reference ($1); }
end ifobjc
| TYPEOF '(' expr ')'
{ $$ = TREE_TYPE ($3); }
initdcl:
declarator maybeasm maybe_attribute '='
- { $<ttype>$ = start_decl ($1, current_declspecs, 1); }
+ { $<ttype>$ = start_decl ($1, current_declspecs, 1,
+ $3, prefix_attributes);
+ start_init ($<ttype>$, $2, global_bindings_p ()); }
init
/* Note how the declaration of the variable is in effect while its init is parsed! */
- { decl_attributes ($<ttype>5, $3);
+ { finish_init ();
finish_decl ($<ttype>5, $6, $2); }
| declarator maybeasm maybe_attribute
- { tree d = start_decl ($1, current_declspecs, 0);
- decl_attributes (d, $3);
- finish_decl (d, NULL_TREE, $2); }
+ { tree d = start_decl ($1, current_declspecs, 0,
+ $3, prefix_attributes);
+ finish_decl (d, NULL_TREE, $2);
+ }
;
notype_initdcl:
notype_declarator maybeasm maybe_attribute '='
- { $<ttype>$ = start_decl ($1, current_declspecs, 1); }
+ { $<ttype>$ = start_decl ($1, current_declspecs, 1,
+ $3, prefix_attributes);
+ start_init ($<ttype>$, $2, global_bindings_p ()); }
init
/* Note how the declaration of the variable is in effect while its init is parsed! */
- { decl_attributes ($<ttype>5, $3);
+ { finish_init ();
+ decl_attributes ($<ttype>5, $3, prefix_attributes);
finish_decl ($<ttype>5, $6, $2); }
| notype_declarator maybeasm maybe_attribute
- { tree d = start_decl ($1, current_declspecs, 0);
- decl_attributes (d, $3);
+ { tree d = start_decl ($1, current_declspecs, 0,
+ $3, prefix_attributes);
finish_decl (d, NULL_TREE, $2); }
;
/* the * rules are dummies to accept the Apollo extended syntax
so that the header files compile. */
maybe_attribute:
+ /* empty */
+ { $$ = NULL_TREE; }
+ | attributes
+ { $$ = $1; }
+ ;
+
+attributes:
+ attribute
+ { $$ = $1; }
+ | attributes attribute
+ { $$ = chainon ($1, $2); }
+ ;
+
+attribute:
+ ATTRIBUTE '(' '(' attribute_list ')' ')'
+ { $$ = $4; }
+ ;
+
+attribute_list:
+ attrib
+ { $$ = $1; }
+ | attribute_list ',' attrib
+ { $$ = chainon ($1, $3); }
+ ;
+
+attrib:
/* empty */
{ $$ = NULL_TREE; }
- | ATTRIBUTE '(' '(' attribute_list ')' ')'
- { $$ = $4; }
- ;
-
-attribute_list
- : attrib
- { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
- | attribute_list ',' attrib
- { $$ = tree_cons (NULL_TREE, $3, $1); }
- ;
-
-attrib
- : IDENTIFIER
- { if (strcmp (IDENTIFIER_POINTER ($1), "packed"))
- warning ("`%s' attribute directive ignored",
- IDENTIFIER_POINTER ($1));
- $$ = $1; }
- | IDENTIFIER '(' IDENTIFIER ')'
- { /* If not "mode (m)", then issue warning. */
- if (strcmp (IDENTIFIER_POINTER ($1), "mode") != 0)
- {
- warning ("`%s' attribute directive ignored",
- IDENTIFIER_POINTER ($1));
- $$ = $1;
- }
- else
- $$ = tree_cons ($1, $3, NULL_TREE); }
- | IDENTIFIER '(' CONSTANT ')'
- { /* if not "aligned(n)", then issue warning */
- if (strcmp (IDENTIFIER_POINTER ($1), "aligned") != 0
- || TREE_CODE ($3) != INTEGER_CST)
- {
- warning ("`%s' attribute directive ignored",
- IDENTIFIER_POINTER ($1));
- $$ = $1;
- }
- else
- $$ = tree_cons ($1, $3, NULL_TREE); }
- | IDENTIFIER '(' IDENTIFIER ',' CONSTANT ',' CONSTANT ')'
- { /* if not "format(...)", then issue warning */
- if (strcmp (IDENTIFIER_POINTER ($1), "format") != 0
- || TREE_CODE ($5) != INTEGER_CST
- || TREE_CODE ($7) != INTEGER_CST)
- {
- warning ("`%s' attribute directive ignored",
- IDENTIFIER_POINTER ($1));
- $$ = $1;
- }
- else
- $$ = tree_cons ($1,
- tree_cons ($3,
- tree_cons ($5, $7, NULL_TREE),
- NULL_TREE),
- NULL_TREE); }
- ;
+ | any_word
+ { $$ = 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 ')'
+ { $$ = build_tree_list ($1, $3); }
+ ;
+
+/* This still leaves out most reserved keywords,
+ shouldn't we include them? */
+
+any_word:
+ identifier
+ | SCSPEC
+ | TYPESPEC
+ | TYPE_QUAL
+ ;
+\f
+/* Initializers. `init' is the entry point. */
init:
expr_no_commas
- | '{' '}'
- { $$ = build_nt (CONSTRUCTOR, NULL_TREE, NULL_TREE);
- if (pedantic)
+ | '{'
+ { really_start_incremental_init (NULL_TREE);
+ /* Note that the call to clear_momentary
+ is in process_init_element. */
+ push_momentary (); }
+ initlist_maybe_comma '}'
+ { $$ = pop_init_level (0);
+ if ($$ == error_mark_node
+ && ! (yychar == STRING || yychar == CONSTANT))
+ pop_momentary ();
+ else
+ pop_momentary_nofree (); }
+
+ | error
+ { $$ = error_mark_node; }
+ ;
+
+/* `initlist_maybe_comma' is the guts of an initializer in braces. */
+initlist_maybe_comma:
+ /* empty */
+ { if (pedantic)
pedwarn ("ANSI C forbids empty initializer braces"); }
- | '{' initlist '}'
- { $$ = build_nt (CONSTRUCTOR, NULL_TREE, nreverse ($2)); }
- | '{' initlist ',' '}'
- { $$ = build_nt (CONSTRUCTOR, NULL_TREE, nreverse ($2)); }
+ | initlist1 maybecomma
+ ;
+
+initlist1:
+ initelt
+ | initlist1 ',' initelt
+ ;
+
+/* `initelt' is a single element of an initializer.
+ It may use braces. */
+initelt:
+ designator_list '=' initval
+ | designator initval
+ | identifier ':'
+ { set_init_label ($1); }
+ initval
+ | initval
+ ;
+
+initval:
+ '{'
+ { push_init_level (0); }
+ initlist_maybe_comma '}'
+ { process_init_element (pop_init_level (0)); }
+ | expr_no_commas
+ { process_init_element ($1); }
| error
- { $$ = NULL_TREE; }
;
-/* This chain is built in reverse order,
- and put in forward order where initlist is used. */
-initlist:
- init
- { $$ = build_tree_list (NULL_TREE, $1); }
- | initlist ',' init
- { $$ = tree_cons (NULL_TREE, $3, $1); }
+designator_list:
+ designator
+ | designator_list designator
+ ;
+
+designator:
+ '.' identifier
+ { set_init_label ($2); }
/* These are for labeled elements. The syntax for an array element
initializer conflicts with the syntax for an Objective-C message,
- so don't include these productions in the Objective-C grammer. */
+ so don't include these productions in the Objective-C grammar. */
ifc
- | '[' expr_no_commas ELLIPSIS expr_no_commas ']' init
- { $$ = build_tree_list (tree_cons ($2, NULL_TREE,
- build_tree_list ($4, NULL_TREE)),
- $6); }
- | initlist ',' '[' expr_no_commas ELLIPSIS expr_no_commas ']' init
- { $$ = tree_cons (tree_cons ($4, NULL_TREE,
- build_tree_list ($6, NULL_TREE)),
- $8,
- $1); }
- | '[' expr_no_commas ']' init
- { $$ = build_tree_list ($2, $4); }
- | initlist ',' '[' expr_no_commas ']' init
- { $$ = tree_cons ($4, $6, $1); }
+ | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
+ { set_init_index ($2, $4); }
+ | '[' expr_no_commas ']'
+ { set_init_index ($2, NULL_TREE); }
end ifc
- | identifier ':' init
- { $$ = build_tree_list ($1, $3); }
- | initlist ',' identifier ':' init
- { $$ = tree_cons ($3, $5, $1); }
;
-
+\f
nested_function:
declarator
- { push_c_function_context ();
- if (! start_function (current_declspecs, $1, 1))
+ { if (pedantic)
+ pedwarn ("ANSI C forbids nested functions");
+
+ push_function_context ();
+ if (! start_function (current_declspecs, $1,
+ prefix_attributes, NULL_TREE, 1))
{
- pop_c_function_context ();
+ pop_function_context ();
YYERROR1;
}
- reinit_parse_for_function ();
- store_parm_decls (); }
+ reinit_parse_for_function (); }
+ old_style_parm_decls
+ { store_parm_decls (); }
/* This used to use compstmt_or_error.
That caused a bug with input `f(g) int g {}',
where the use of YYERROR1 above caused an error
which called YYERROR1 again, and so on. */
compstmt
{ finish_function (1);
- pop_c_function_context (); }
+ pop_function_context (); }
;
notype_nested_function:
notype_declarator
- { push_c_function_context ();
- if (! start_function (current_declspecs, $1, 1))
+ { if (pedantic)
+ pedwarn ("ANSI C forbids nested functions");
+
+ push_function_context ();
+ if (! start_function (current_declspecs, $1,
+ prefix_attributes, NULL_TREE, 1))
{
- pop_c_function_context ();
+ pop_function_context ();
YYERROR1;
}
- reinit_parse_for_function ();
- store_parm_decls (); }
+ reinit_parse_for_function (); }
+ old_style_parm_decls
+ { store_parm_decls (); }
/* This used to use compstmt_or_error.
That caused a bug with input `f(g) int g {}',
where the use of YYERROR1 above caused an error
which called YYERROR1 again, and so on. */
compstmt
{ finish_function (1);
- pop_c_function_context (); }
+ pop_function_context (); }
;
/* Any kind of declarator (thus, all declarators allowed
{ $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
| '*' type_quals after_type_declarator %prec UNARY
{ $$ = make_pointer_declarator ($2, $3); }
+ /* ??? Yuck. setattrs is a quick hack. We can't use
+ prefix_attributes because $1 only applies to this
+ declarator. We assume setspecs has already been done.
+ setattrs also avoids 5 reduce/reduce conflicts (otherwise multiple
+ attributes could be recognized here or in `attributes'). */
+ | attributes setattrs after_type_declarator
+ { $$ = $3; }
| TYPENAME
ifobjc
| OBJECTNAME
/* | parm_declarator '(' error ')' %prec '.'
{ $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
poplevel (0, 0, 0); } */
+ifc
+ | parm_declarator '[' '*' ']' %prec '.'
+ { $$ = build_nt (ARRAY_REF, $1, NULL_TREE);
+ if (! flag_isoc9x)
+ error ("`[*]' in parameter declaration only allowed in ISO C 9x");
+ }
+end ifc
| parm_declarator '[' expr ']' %prec '.'
{ $$ = build_nt (ARRAY_REF, $1, $3); }
| parm_declarator '[' ']' %prec '.'
{ $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
| '*' type_quals parm_declarator %prec UNARY
{ $$ = make_pointer_declarator ($2, $3); }
+ /* ??? Yuck. setattrs is a quick hack. We can't use
+ prefix_attributes because $1 only applies to this
+ declarator. We assume setspecs has already been done.
+ setattrs also avoids 5 reduce/reduce conflicts (otherwise multiple
+ attributes could be recognized here or in `attributes'). */
+ | attributes setattrs parm_declarator
+ { $$ = $3; }
| TYPENAME
;
{ $$ = $2; }
| '*' type_quals notype_declarator %prec UNARY
{ $$ = make_pointer_declarator ($2, $3); }
+ifc
+ | notype_declarator '[' '*' ']' %prec '.'
+ { $$ = build_nt (ARRAY_REF, $1, NULL_TREE);
+ if (! flag_isoc9x)
+ error ("`[*]' in parameter declaration only allowed in ISO C 9x");
+ }
+end ifc
| notype_declarator '[' expr ']' %prec '.'
{ $$ = build_nt (ARRAY_REF, $1, $3); }
| notype_declarator '[' ']' %prec '.'
{ $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
+ /* ??? Yuck. setattrs is a quick hack. We can't use
+ prefix_attributes because $1 only applies to this
+ declarator. We assume setspecs has already been done.
+ setattrs also avoids 5 reduce/reduce conflicts (otherwise multiple
+ attributes could be recognized here or in `attributes'). */
+ | attributes setattrs notype_declarator
+ { $$ = $3; }
| IDENTIFIER
;
+struct_head:
+ STRUCT
+ { $$ = NULL_TREE; }
+ | STRUCT attributes
+ { $$ = $2; }
+ ;
+
+union_head:
+ UNION
+ { $$ = NULL_TREE; }
+ | UNION attributes
+ { $$ = $2; }
+ ;
+
+enum_head:
+ ENUM
+ { $$ = NULL_TREE; }
+ | ENUM attributes
+ { $$ = $2; }
+ ;
+
structsp:
- STRUCT identifier '{'
+ struct_head identifier '{'
{ $$ = start_struct (RECORD_TYPE, $2);
/* Start scope of tag before parsing components. */
}
- component_decl_list '}'
- { $$ = finish_struct ($<ttype>4, $5);
- /* Really define the structure. */
- }
- | STRUCT '{' component_decl_list '}'
+ component_decl_list '}' maybe_attribute
+ { $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
+ | struct_head '{' component_decl_list '}' maybe_attribute
{ $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
- $3); }
- | STRUCT identifier
+ $3, chainon ($1, $5));
+ }
+ | struct_head identifier
{ $$ = xref_tag (RECORD_TYPE, $2); }
- | UNION identifier '{'
+ | union_head identifier '{'
{ $$ = start_struct (UNION_TYPE, $2); }
- component_decl_list '}'
- { $$ = finish_struct ($<ttype>4, $5); }
- | UNION '{' component_decl_list '}'
+ component_decl_list '}' maybe_attribute
+ { $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
+ | union_head '{' component_decl_list '}' maybe_attribute
{ $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
- $3); }
- | UNION identifier
+ $3, chainon ($1, $5));
+ }
+ | union_head identifier
{ $$ = xref_tag (UNION_TYPE, $2); }
- | ENUM identifier '{'
+ | enum_head identifier '{'
{ $<itype>3 = suspend_momentary ();
$$ = start_enum ($2); }
- enumlist maybecomma_warn '}'
- { $$ = finish_enum ($<ttype>4, nreverse ($5));
+ enumlist maybecomma_warn '}' maybe_attribute
+ { $$= finish_enum ($<ttype>4, nreverse ($5), chainon ($1, $8));
resume_momentary ($<itype>3); }
- | ENUM '{'
+ | enum_head '{'
{ $<itype>2 = suspend_momentary ();
$$ = start_enum (NULL_TREE); }
- enumlist maybecomma_warn '}'
- { $$ = finish_enum ($<ttype>3, nreverse ($4));
+ enumlist maybecomma_warn '}' maybe_attribute
+ { $$= finish_enum ($<ttype>3, nreverse ($4), chainon ($1, $7));
resume_momentary ($<itype>2); }
- | ENUM identifier
+ | enum_head identifier
{ $$ = xref_tag (ENUMERAL_TYPE, $2); }
;
maybecomma_warn:
/* empty */
| ','
- { if (pedantic) pedwarn ("comma at end of enumerator list"); }
+ { if (pedantic && ! flag_isoc9x)
+ pedwarn ("comma at end of enumerator list"); }
;
component_decl_list:
typed_typespecs setspecs components
{ $$ = $3;
current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
declspec_stack = TREE_CHAIN (declspec_stack);
resume_momentary ($2); }
| typed_typespecs
| nonempty_type_quals setspecs components
{ $$ = $3;
current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
declspec_stack = TREE_CHAIN (declspec_stack);
resume_momentary ($2); }
| nonempty_type_quals
$$ = NULL_TREE; }
| error
{ $$ = NULL_TREE; }
+ | extension component_decl
+ { $$ = $2;
+ pedantic = $<itype>1; }
;
components:
component_declarator:
save_filename save_lineno declarator maybe_attribute
{ $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
- decl_attributes ($$, $4); }
+ decl_attributes ($$, $4, prefix_attributes); }
| save_filename save_lineno
declarator ':' expr_no_commas maybe_attribute
{ $$ = grokfield ($1, $2, $3, current_declspecs, $5);
- decl_attributes ($$, $6); }
+ decl_attributes ($$, $6, prefix_attributes); }
| save_filename save_lineno ':' expr_no_commas maybe_attribute
{ $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
- decl_attributes ($$, $5); }
+ decl_attributes ($$, $5, prefix_attributes); }
;
/* We chain the enumerators in reverse order.
enumlist:
enumerator
| enumlist ',' enumerator
- { $$ = chainon ($3, $1); }
+ { if ($1 == error_mark_node)
+ $$ = $1;
+ else
+ $$ = chainon ($3, $1); }
+ | error
+ { $$ = error_mark_node; }
;
{ $$ = build_nt (ARRAY_REF, NULL_TREE, $2); }
| '[' ']' %prec '.'
{ $$ = build_nt (ARRAY_REF, NULL_TREE, NULL_TREE); }
+ /* ??? It appears we have to support attributes here, however
+ using prefix_attributes is wrong. */
+ | attributes setattrs absdcl1
+ { $$ = $3; }
;
/* at least one statement, the first of which parses without error. */
is actually regarded as an invalid decl and part of the decls. */
stmts:
+ lineno_stmt_or_labels
+ {
+ if (pedantic && $1)
+ pedwarn ("ANSI C forbids label at end of compound statement");
+ }
+ ;
+
+lineno_stmt_or_labels:
lineno_stmt_or_label
- | stmts lineno_stmt_or_label
- | stmts errstmt
+ | lineno_stmt_or_labels lineno_stmt_or_label
+ { $$ = $2; }
+ | lineno_stmt_or_labels errstmt
+ { $$ = 0; }
;
xstmts:
| error compstmt
;
-compstmt: '{' '}'
+compstmt_start: '{' { compstmt_count++; }
+
+compstmt_nostart: '}'
{ $$ = convert (void_type_node, integer_zero_node); }
- | '{' pushlevel maybe_label_decls decls xstmts '}'
+ | pushlevel maybe_label_decls decls xstmts '}'
{ emit_line_note (input_filename, lineno);
expand_end_bindings (getdecls (), 1, 0);
$$ = poplevel (1, 1, 0);
- pop_momentary (); }
- | '{' pushlevel maybe_label_decls error '}'
+ if (yychar == CONSTANT || yychar == STRING)
+ pop_momentary_nofree ();
+ else
+ pop_momentary (); }
+ | pushlevel maybe_label_decls error '}'
{ emit_line_note (input_filename, lineno);
expand_end_bindings (getdecls (), kept_level_p (), 0);
$$ = poplevel (kept_level_p (), 0, 0);
- pop_momentary (); }
- | '{' pushlevel maybe_label_decls stmts '}'
+ if (yychar == CONSTANT || yychar == STRING)
+ pop_momentary_nofree ();
+ else
+ pop_momentary (); }
+ | pushlevel maybe_label_decls stmts '}'
{ emit_line_note (input_filename, lineno);
expand_end_bindings (getdecls (), kept_level_p (), 0);
$$ = poplevel (kept_level_p (), 0, 0);
- pop_momentary (); }
+ if (yychar == CONSTANT || yychar == STRING)
+ pop_momentary_nofree ();
+ else
+ pop_momentary (); }
+ ;
+
+compstmt_primary_start:
+ '(' '{'
+ { if (current_function_decl == 0)
+ {
+ error ("braced-group within expression allowed only inside a function");
+ YYERROR;
+ }
+ /* We must force a BLOCK for this level
+ so that, if it is not expanded later,
+ there is a way to turn off the entire subtree of blocks
+ that are contained in it. */
+ keep_next_level ();
+ push_iterator_stack ();
+ push_label_level ();
+ $$ = expand_start_stmt_expr ();
+ compstmt_count++;
+ }
+
+compstmt: compstmt_start compstmt_nostart
+ { $$ = $2; }
;
/* Value is number of statements counted as of the closeparen. */
simple_if:
if_prefix lineno_labeled_stmt
-/* Make sure expand_end_cond is run once
- for each call to expand_start_cond.
+/* Make sure c_expand_end_cond is run once
+ for each call to c_expand_start_cond.
Otherwise a crash is likely. */
| if_prefix error
;
if_prefix:
IF '(' expr ')'
{ emit_line_note ($<filename>-1, $<lineno>0);
- expand_start_cond (truthvalue_conversion ($3), 0);
- $<itype>1 = stmt_count;
+ c_expand_start_cond (truthvalue_conversion ($3), 0,
+ compstmt_count);
+ $<itype>$ = stmt_count;
if_stmt_file = $<filename>-1;
if_stmt_line = $<lineno>0;
position_after_white_space (); }
do_stmt_start:
DO
{ stmt_count++;
+ compstmt_count++;
emit_line_note ($<filename>-1, $<lineno>0);
/* See comment in `while' alternative, above. */
emit_nop ();
lineno_stmt_or_label:
save_filename save_lineno stmt_or_label
- { }
+ { $$ = $3; }
;
stmt_or_label:
stmt
+ { $$ = 0; }
| label
- { int next;
- position_after_white_space ();
- next = getc (finput);
- ungetc (next, finput);
- if (pedantic && next == '}')
- pedwarn ("ANSI C forbids label at end of compound statement");
- }
+ { $$ = 1; }
;
/* Parse a single real statement, not including any labels. */
| expr ';'
{ stmt_count++;
emit_line_note ($<filename>-1, $<lineno>0);
+/* It appears that this should not be done--that a non-lvalue array
+ shouldn't get an error if the value isn't used.
+ Section 3.2.2.1 says that an array lvalue gets converted to a pointer
+ if it appears as a top-level expression,
+ but says nothing about non-lvalue arrays. */
+#if 0
+ /* Call default_conversion to get an error
+ on referring to a register array if pedantic. */
+ if (TREE_CODE (TREE_TYPE ($1)) == ARRAY_TYPE
+ || TREE_CODE (TREE_TYPE ($1)) == FUNCTION_TYPE)
+ $1 = default_conversion ($1);
+#endif
iterator_expand ($1);
clear_momentary (); }
| simple_if ELSE
- { expand_start_else ();
+ { c_expand_start_else ();
$<itype>1 = stmt_count;
position_after_white_space (); }
lineno_labeled_stmt
- { expand_end_cond ();
+ { c_expand_end_cond ();
if (extra_warnings && stmt_count == $<itype>1)
warning ("empty body in an else-statement"); }
| simple_if %prec IF
- { expand_end_cond ();
- if (extra_warnings && stmt_count == $<itype>1)
+ { c_expand_end_cond ();
+ /* This warning is here instead of in simple_if, because we
+ do not want a warning if an empty if is followed by an
+ else statement. Increment stmt_count so we don't
+ give a second error if this is a nested `if'. */
+ if (extra_warnings && stmt_count++ == $<itype>1)
warning_with_file_and_line (if_stmt_file, if_stmt_line,
"empty body in an if-statement"); }
-/* Make sure expand_end_cond is run once
- for each call to expand_start_cond.
+/* Make sure c_expand_end_cond is run once
+ for each call to c_expand_start_cond.
Otherwise a crash is likely. */
| simple_if ELSE error
- { expand_end_cond (); }
+ { c_expand_end_cond (); }
| WHILE
{ stmt_count++;
emit_line_note ($<filename>-1, $<lineno>0);
expand_loop_continue_here ();
if ($9)
c_expand_expr_stmt ($9);
- pop_momentary ();
+ if (yychar == CONSTANT || yychar == STRING)
+ pop_momentary_nofree ();
+ else
+ pop_momentary ();
expand_end_loop (); }
| SWITCH '(' expr ')'
{ stmt_count++;
position_after_white_space (); }
lineno_labeled_stmt
{ expand_end_case ($3);
- pop_momentary (); }
+ if (yychar == CONSTANT || yychar == STRING)
+ pop_momentary_nofree ();
+ else
+ pop_momentary (); }
| BREAK ';'
{ stmt_count++;
emit_line_note ($<filename>-1, $<lineno>0);
}
}
| GOTO '*' expr ';'
- { stmt_count++;
+ { if (pedantic)
+ pedwarn ("ANSI C forbids `goto *expr;'");
+ stmt_count++;
emit_line_note ($<filename>-1, $<lineno>0);
expand_computed_goto (convert (ptr_type_node, $3)); }
| ';'
$<itype>$ = 0;
if (TREE_CODE ($3) != VAR_DECL)
error ("invalid `for (ITERATOR)' syntax");
- if (! ITERATOR_P ($3))
+ else if (! ITERATOR_P ($3))
error ("`%s' is not an iterator",
IDENTIFIER_POINTER (DECL_NAME ($3)));
else if (ITERATOR_BOUND_P ($3))
emit_line_note (input_filename, lineno);
expand_end_bindings (getdecls (), 1, 0);
$<ttype>$ = poplevel (1, 1, 0);
- pop_momentary ();
+ if (yychar == CONSTANT || yychar == STRING)
+ pop_momentary_nofree ();
+ else
+ pop_momentary ();
}
*/
if (value != error_mark_node)
{
tree duplicate;
- int success = pushcase (value, label, &duplicate);
+ int success;
+
+ if (pedantic && ! INTEGRAL_TYPE_P (TREE_TYPE (value)))
+ pedwarn ("label must have integral type in ANSI C");
+
+ success = pushcase (value, convert_and_check,
+ label, &duplicate);
+
if (success == 1)
error ("case label not within a switch statement");
else if (success == 2)
register tree label
= build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
+ if (pedantic)
+ pedwarn ("ANSI C forbids case ranges");
stmt_count++;
if (value1 != error_mark_node && value2 != error_mark_node)
{
tree duplicate;
- int success = pushcase_range (value1, value2, label,
+ int success = pushcase_range (value1, value2,
+ convert_and_check, label,
&duplicate);
if (success == 1)
error ("case label not within a switch statement");
tree duplicate;
register tree label
= build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
- int success = pushcase (NULL_TREE, label, &duplicate);
+ int success = pushcase (NULL_TREE, 0, label, &duplicate);
stmt_count++;
if (success == 1)
error ("default label not within a switch statement");
error_with_decl (duplicate, "this is the first default label");
}
position_after_white_space (); }
- | identifier ':'
+ | identifier ':' maybe_attribute
{ tree label = define_label (input_filename, lineno, $1);
stmt_count++;
emit_nop ();
if (label)
- expand_label (label);
+ {
+ expand_label (label);
+ decl_attributes (label, $3, NULL_TREE);
+ }
position_after_white_space (); }
;
maybe_type_qual:
/* empty */
- { emit_line_note (input_filename, lineno); }
+ { emit_line_note (input_filename, lineno);
+ $$ = NULL_TREE; }
| TYPE_QUAL
{ emit_line_note (input_filename, lineno); }
;
{ $$ = get_parm_info (0); }
| ELLIPSIS
{ $$ = get_parm_info (0);
- if (pedantic)
- pedwarn ("ANSI C requires a named argument before `...'");
+ /* Gcc used to allow this as an extension. However, it does
+ not work for all targets, and thus has been disabled.
+ Also, since func (...) and func () are indistinguishable,
+ it caused problems with the code in expand_builtin which
+ tries to verify that BUILT_IN_NEXT_ARG is being used
+ correctly. */
+ error ("ANSI C requires a named argument before `...'");
}
| parms
{ $$ = get_parm_info (1); }
/* A single parameter declaration or parameter type name,
as found in a parmlist. */
parm:
- typed_declspecs parm_declarator
- { $$ = build_tree_list ($1, $2) ; }
- | typed_declspecs notype_declarator
- { $$ = build_tree_list ($1, $2) ; }
- | typed_declspecs absdcl
- { $$ = build_tree_list ($1, $2); }
- | declmods notype_declarator
- { $$ = build_tree_list ($1, $2) ; }
- | declmods absdcl
- { $$ = build_tree_list ($1, $2); }
+ typed_declspecs setspecs parm_declarator maybe_attribute
+ { $$ = build_tree_list (build_tree_list (current_declspecs,
+ $3),
+ build_tree_list (prefix_attributes,
+ $4));
+ current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
+ declspec_stack = TREE_CHAIN (declspec_stack);
+ resume_momentary ($2); }
+ | typed_declspecs setspecs notype_declarator maybe_attribute
+ { $$ = build_tree_list (build_tree_list (current_declspecs,
+ $3),
+ build_tree_list (prefix_attributes,
+ $4));
+ current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
+ declspec_stack = TREE_CHAIN (declspec_stack);
+ resume_momentary ($2); }
+ | typed_declspecs setspecs absdcl maybe_attribute
+ { $$ = build_tree_list (build_tree_list (current_declspecs,
+ $3),
+ build_tree_list (prefix_attributes,
+ $4));
+ current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
+ declspec_stack = TREE_CHAIN (declspec_stack);
+ resume_momentary ($2); }
+ | declmods setspecs notype_declarator maybe_attribute
+ { $$ = build_tree_list (build_tree_list (current_declspecs,
+ $3),
+ build_tree_list (prefix_attributes,
+ $4));
+ current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
+ declspec_stack = TREE_CHAIN (declspec_stack);
+ resume_momentary ($2); }
+
+ | declmods setspecs absdcl maybe_attribute
+ { $$ = build_tree_list (build_tree_list (current_declspecs,
+ $3),
+ build_tree_list (prefix_attributes,
+ $4));
+ current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
+ declspec_stack = TREE_CHAIN (declspec_stack);
+ resume_momentary ($2); }
;
/* This is used in a function definition
| identifiers_or_typenames ',' identifier
{ $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
;
+
+extension:
+ EXTENSION
+ { $<itype>$ = pedantic;
+ pedantic = 0; }
+ ;
\f
ifobjc
/* Objective-C productions. */
{
$$ = NULL_TREE;
}
- | ARITHCOMPARE identifier_list ARITHCOMPARE
+ | non_empty_protocolrefs
+ ;
+
+non_empty_protocolrefs:
+ ARITHCOMPARE identifier_list ARITHCOMPARE
{
if ($1 == LT_EXPR && $3 == GT_EXPR)
$$ = $2;
ivar_decl:
typed_typespecs setspecs ivars
- {
- $$ = $3;
- resume_momentary ($2);
- }
+ { $$ = $3;
+ current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
+ declspec_stack = TREE_CHAIN (declspec_stack);
+ resume_momentary ($2); }
| nonempty_type_quals setspecs ivars
- {
- $$ = $3;
- resume_momentary ($2);
- }
+ { $$ = $3;
+ current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
+ declspec_stack = TREE_CHAIN (declspec_stack);
+ resume_momentary ($2); }
| error
{ $$ = NULL_TREE; }
;
methodproto:
'+'
{
+ /* Remember protocol qualifiers in prototypes. */
+ remember_protocol_qualifiers ();
objc_inherit_code = CLASS_METHOD_DECL;
}
methoddecl
{
+ /* Forget protocol qualifiers here. */
+ forget_protocol_qualifiers ();
add_class_method (objc_interface_context, $3);
}
semi_or_error
| '-'
{
+ /* Remember protocol qualifiers in prototypes. */
+ remember_protocol_qualifiers ();
objc_inherit_code = INSTANCE_METHOD_DECL;
}
methoddecl
{
+ /* Forget protocol qualifiers here. */
+ forget_protocol_qualifiers ();
add_instance_method (objc_interface_context, $3);
}
semi_or_error
mydecl:
typed_declspecs setspecs myparms ';'
- { resume_momentary ($2); }
+ { current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
+ declspec_stack = TREE_CHAIN (declspec_stack);
+ resume_momentary ($2); }
| typed_declspecs ';'
{ shadow_tag ($1); }
| declmods ';'
as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
myparm:
- parm_declarator
- { $$ = build_tree_list (current_declspecs, $1) ; }
- | notype_declarator
- { $$ = build_tree_list (current_declspecs, $1) ; }
- | absdcl
- { $$ = build_tree_list (current_declspecs, $1) ; }
+ parm_declarator maybe_attribute
+ { $$ = build_tree_list (build_tree_list (current_declspecs,
+ $1),
+ build_tree_list (prefix_attributes,
+ $2)); }
+ | notype_declarator maybe_attribute
+ { $$ = build_tree_list (build_tree_list (current_declspecs,
+ $1),
+ build_tree_list (prefix_attributes,
+ $2)); }
+ | absdcl maybe_attribute
+ { $$ = build_tree_list (build_tree_list (current_declspecs,
+ $1),
+ build_tree_list (prefix_attributes,
+ $2)); }
;
optparmlist:
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