/* YACC parser for C syntax and for Objective C. -*-c-*-
- Copyright (C) 1987, 88, 89, 92, 93, 1994 Free Software Foundation, Inc.
+ Copyright (C) 1987, 88, 89, 92-6, 1997 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 66
end ifobjc
ifc
-%expect 8
+%expect 46
-/* These are the 8 conflicts you should get in parse.output;
+/* These are the 23 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 42 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTE.)
+State 44 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.)
-*/
+State 110 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTE.)
+State 111 contains 1 shift/reduce conflict. (Two ways to recover from error.)
+State 115 contains 1 shift/reduce conflict. (Two ways to recover from error.)
+State 132 contains 1 shift/reduce conflict. (See comment at component_decl.)
+State 180 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTE.)
+State 194 contains 2 shift/reduce conflict. (Four ways to parse this.)
+State 202 contains 1 shift/reduce conflict. (Two ways to recover from error.)
+State 214 contains 1 shift/reduce conflict. (Two ways to recover from error.)
+State 220 contains 1 shift/reduce conflict. (Two ways to recover from error.)
+State 304 contains 2 shift/reduce conflicts. (Four ways to parse this.)
+State 335 contains 2 shift/reduce conflicts. (Four ways to parse this.)
+State 347 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTES.)
+State 352 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTES.)
+State 383 contains 2 shift/reduce conflicts. (Four ways to parse this.)
+State 434 contains 2 shift/reduce conflicts. (Four ways to parse this.) */
+
end ifc
%{
%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 */
/* 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
%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 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 <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
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. */
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, $$, 0);
} }
*/
- | SIZEOF unary_expr %prec UNARY
- { if (TREE_CODE ($2) == COMPONENT_REF
+ | sizeof unary_expr %prec UNARY
+ { skip_evaluation--;
+ if (TREE_CODE ($2) == COMPONENT_REF
&& DECL_BIT_FIELD (TREE_OPERAND ($2, 1)))
error ("`sizeof' applied to a bit-field");
$$ = 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); }
;
+sizeof:
+ SIZEOF { skip_evaluation++; }
+ ;
+
+alignof:
+ ALIGNOF { skip_evaluation++; }
+ ;
+
cast_expr:
unary_expr
| '(' typename ')' cast_expr %prec UNARY
{ $$ = parser_build_binary_op ($2, $1, $3); }
| expr_no_commas '^' expr_no_commas
{ $$ = 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 ($$, MODIFY_EXPR); }
primary:
IDENTIFIER
{
- tree context;
-
$$ = lastiddecl;
if (!$$ || $$ == error_mark_node)
{
;
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 ')'
{ $$ = TREE_TYPE ($3); }
initdcl:
declarator maybeasm maybe_attribute '='
- { $<ttype>$ = start_decl ($1, current_declspecs, 1);
- decl_attributes ($<ttype>$, $3);
+ { $<ttype>$ = start_decl ($1, current_declspecs, 1,
+ $3, prefix_attributes);
start_init ($<ttype>$, $2, global_bindings_p ()); }
init
/* Note how the declaration of the variable is in effect while its init is parsed! */
{ finish_init ();
- decl_attributes ($<ttype>5, $3);
finish_decl ($<ttype>5, $6, $2); }
| declarator maybeasm maybe_attribute
- { tree d = start_decl ($1, current_declspecs, 0);
- decl_attributes (d, $3);
- finish_decl (d, NULL_TREE, $2); }
+ { tree d = start_decl ($1, current_declspecs, 0,
+ $3, prefix_attributes);
+ finish_decl (d, NULL_TREE, $2);
+ }
;
notype_initdcl:
notype_declarator maybeasm maybe_attribute '='
- { $<ttype>$ = start_decl ($1, current_declspecs, 1);
- decl_attributes ($<ttype>$, $3);
+ { $<ttype>$ = start_decl ($1, current_declspecs, 1,
+ $3, prefix_attributes);
start_init ($<ttype>$, $2, global_bindings_p ()); }
init
/* Note how the declaration of the variable is in effect while its init is parsed! */
{ finish_init ();
- decl_attributes ($<ttype>5, $3);
+ decl_attributes ($<ttype>5, $3, prefix_attributes);
finish_decl ($<ttype>5, $6, $2); }
| notype_declarator maybeasm maybe_attribute
- { tree d = start_decl ($1, current_declspecs, 0);
- decl_attributes (d, $3);
+ { tree d = start_decl ($1, current_declspecs, 0,
+ $3, prefix_attributes);
finish_decl (d, NULL_TREE, $2); }
;
/* the * rules are dummies to accept the Apollo extended syntax
so that the header files compile. */
maybe_attribute:
+ /* empty */
+ { $$ = 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 */
{ $$ = NULL_TREE; }
- | maybe_attribute ATTRIBUTE '(' '(' attribute_list ')' ')'
- { $$ = chainon ($5, $1); }
- ;
-
-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")
- && strcmp (IDENTIFIER_POINTER ($1), "noreturn"))
- warning ("`%s' attribute directive ignored",
- IDENTIFIER_POINTER ($1));
- $$ = $1; }
- | TYPE_QUAL
- | IDENTIFIER '(' IDENTIFIER ')'
- { /* If not "mode (m)" or "aligned", then issue warning.
- If "aligned", this will later produce an error in decl_attributes
- since an identifier is not a valid constant, but we want to give
- an error instead of a warning when the attribute name is
- recognized but has an improper argument. */
- if (strcmp (IDENTIFIER_POINTER ($1), "mode") != 0
- && strcmp (IDENTIFIER_POINTER ($1), "aligned") != 0)
- {
- warning ("`%s' attribute directive ignored",
- IDENTIFIER_POINTER ($1));
- $$ = $1;
- }
- else
- $$ = tree_cons ($1, $3, NULL_TREE); }
- | IDENTIFIER '(' expr_no_commas ')'
- { /* if not "aligned(n)", then issue warning */
- if (strcmp (IDENTIFIER_POINTER ($1), "aligned") != 0)
- {
- warning ("`%s' attribute directive ignored",
- IDENTIFIER_POINTER ($1));
- $$ = $1;
- }
- else
- $$ = tree_cons ($1, $3, NULL_TREE); }
- | IDENTIFIER '(' IDENTIFIER ',' expr_no_commas ',' expr_no_commas ')'
- { /* if not "format(...)", then issue warning */
- if (strcmp (IDENTIFIER_POINTER ($1), "format") != 0)
- {
- warning ("`%s' attribute directive ignored",
- IDENTIFIER_POINTER ($1));
- $$ = $1;
- }
- else
- $$ = tree_cons ($1,
- tree_cons ($3,
- tree_cons ($5, $7, NULL_TREE),
- NULL_TREE),
- NULL_TREE); }
- | IDENTIFIER '(' STRING ')'
- { /* If not "section (name)", then issue warning. */
- if (strcmp (IDENTIFIER_POINTER ($1), "section") != 0)
- {
- warning ("`%s' attribute directive ignored",
- IDENTIFIER_POINTER ($1));
- $$ = $1;
- }
- else
- $$ = tree_cons ($1, $3, NULL_TREE); }
- ;
+ | any_word
+ { $$ = 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 ')'
+ { $$ = build_tree_list ($1, $3); }
+ ;
+
+/* This still leaves out most reserved keywords,
+ shouldn't we include them? */
+
+any_word:
+ identifier
+ | SCSPEC
+ | TYPESPEC
+ | TYPE_QUAL
+ ;
\f
/* Initializers. `init' is the entry point. */
push_momentary (); }
initlist_maybe_comma '}'
{ $$ = pop_init_level (0);
- if ($$ == error_mark_node)
+ if ($$ == error_mark_node
+ && ! (yychar == STRING || yychar == CONSTANT))
pop_momentary ();
else
pop_momentary_nofree (); }
| error
/* 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 ']' '='
{ set_init_index ($2, $4); }
| '[' expr_no_commas ']' '='
{ set_init_index ($2, NULL_TREE); }
initelt
+ | '[' expr_no_commas ']'
+ { set_init_index ($2, NULL_TREE); }
+ initelt
end ifc
| identifier ':'
{ set_init_label ($1); }
nested_function:
declarator
{ push_c_function_context ();
- if (! start_function (current_declspecs, $1, 1))
+ if (! start_function (current_declspecs, $1,
+ prefix_attributes, NULL_TREE, 1))
{
pop_c_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
notype_nested_function:
notype_declarator
{ push_c_function_context ();
- if (! start_function (current_declspecs, $1, 1))
+ if (! start_function (current_declspecs, $1,
+ prefix_attributes, NULL_TREE, 1))
{
pop_c_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
{ $$ = build_nt (ARRAY_REF, $1, NULL_TREE); }
| '*' type_quals after_type_declarator %prec UNARY
{ $$ = 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
+ { $$ = $3; }
| TYPENAME
ifobjc
| OBJECTNAME
{ $$ = 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
;
{ $$ = build_nt (ARRAY_REF, $1, $3); }
| notype_declarator '[' ']' %prec '.'
{ $$ = 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
+ { $$ = $3; }
| IDENTIFIER
;
{ $$ = 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, $7); }
+ | STRUCT '{' component_decl_list '}' maybe_attribute
{ $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
- $3); }
+ $3, $5);
+ }
| STRUCT identifier
{ $$ = xref_tag (RECORD_TYPE, $2); }
| UNION identifier '{'
{ $$ = start_struct (UNION_TYPE, $2); }
- component_decl_list '}'
- { $$ = finish_struct ($<ttype>4, $5); }
- | UNION '{' component_decl_list '}'
+ component_decl_list '}' maybe_attribute
+ { $$ = finish_struct ($<ttype>4, $5, $7); }
+ | UNION '{' component_decl_list '}' maybe_attribute
{ $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
- $3); }
+ $3, $5);
+ }
| UNION identifier
{ $$ = xref_tag (UNION_TYPE, $2); }
| ENUM identifier '{'
{ $<itype>3 = suspend_momentary ();
$$ = start_enum ($2); }
- enumlist maybecomma_warn '}'
- { $$ = finish_enum ($<ttype>4, nreverse ($5));
+ enumlist maybecomma_warn '}' maybe_attribute
+ { $$ = finish_enum ($<ttype>4, nreverse ($5), $8);
resume_momentary ($<itype>3); }
| ENUM '{'
{ $<itype>2 = suspend_momentary ();
$$ = start_enum (NULL_TREE); }
- enumlist maybecomma_warn '}'
- { $$ = finish_enum ($<ttype>3, nreverse ($4));
+ enumlist maybecomma_warn '}' maybe_attribute
+ { $$ = finish_enum ($<ttype>3, nreverse ($4), $7);
resume_momentary ($<itype>2); }
| ENUM identifier
{ $$ = xref_tag (ENUMERAL_TYPE, $2); }
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. */
;
/* 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:
{ emit_line_note (input_filename, lineno);
expand_end_bindings (getdecls (), 1, 0);
$$ = poplevel (1, 1, 0);
- pop_momentary (); }
+ if (yychar == CONSTANT || yychar == STRING)
+ pop_momentary_nofree ();
+ else
+ pop_momentary (); }
| '{' pushlevel maybe_label_decls error '}'
{ emit_line_note (input_filename, lineno);
expand_end_bindings (getdecls (), kept_level_p (), 0);
$$ = poplevel (kept_level_p (), 0, 0);
- pop_momentary (); }
+ 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);
$$ = poplevel (kept_level_p (), 0, 0);
- pop_momentary (); }
+ if (yychar == CONSTANT || yychar == STRING)
+ pop_momentary_nofree ();
+ else
+ pop_momentary (); }
;
/* Value is number of statements counted as of the closeparen. */
lineno_stmt_or_label:
save_filename save_lineno stmt_or_label
- { }
+ { $$ = $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. */
{ 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. */
- if (extra_warnings && stmt_count == $<itype>1)
+ 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
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)); }
| ';'
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 ();
}
*/
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)
{ $$ = get_parm_info (0); }
| ELLIPSIS
{ $$ = 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
{ $$ = NULL_TREE; }
;
mydecl:
typed_declspecs setspecs myparms ';'
- { resume_momentary ($2); }
+ { current_declspecs = TREE_VALUE (declspec_stack);
+ prefix_attributes = TREE_PURPOSE (declspec_stack);
+ declspec_stack = TREE_CHAIN (declspec_stack);
+ resume_momentary ($2); }
| typed_declspecs ';'
{ shadow_tag ($1); }
| declmods ';'
as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
myparm:
- parm_declarator
- { $$ = 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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