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Text File | 1990-03-09 | 88.6 KB | 3,175 lines |
- /* YACC parser for C++ syntax.
- Copyright (C) 1988, 1989 Free Software Foundation, Inc.
- Hacked by Michael Tiemann (tiemann@mcc.com)
-
- This file is part of GNU CC.
-
- GNU CC 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 1, or (at your option)
- any later version.
-
- GNU CC 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 GNU CC; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-
- /* This grammar is based on the GNU CC grammar. */
-
- /* Also note: this version contains experimental exception
- handling features. They could break, change, disappear,
- or otherwise exhibit volatile behavior. Don't depend on
- me (Michael Tiemann) to protect you from any negative impact
- this may have on your professional, personal, or spiritual life. */
-
- %{
- #include "config.h"
- #include "tree.h"
- #include "input.h"
- #include "cplus-parse.h"
- #include "cplus-tree.h"
- #include "assert.h"
-
- /* C++ extensions */
- extern tree ridpointers[]; /* need this up here */
- extern tree void_list_node;
-
- #include <stdio.h>
- #include <errno.h>
-
- #ifndef errno
- extern int errno;
- #endif
-
- extern int end_of_file;
-
- void yyerror ();
-
- /* Contains error message to give if user tries to declare
- a variable where one does not belong. */
- static char *stmt_decl_msg = 0;
-
- #ifndef YYDEBUG
- /* Cause the `yydebug' variable to be defined. */
- int yydebug;
- #endif
-
- /* Cons up an empty parameter list. */
- #ifdef __GNU__
- __inline
- #endif
- static tree
- empty_parms ()
- {
- tree parms;
-
- if (strict_prototype)
- parms = void_list_node;
- else
- parms = NULL_TREE;
- return parms;
- }
-
- void yyhook ();
- %}
-
- %start program
-
- %union {long itype; tree ttype; enum tree_code code; }
-
- /* 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
-
- /* Reserved words that specify type.
- yylval contains an IDENTIFIER_NODE which indicates which one. */
- %token TYPESPEC
-
- /* Reserved words that qualify type: "const" or "volatile".
- yylval contains an IDENTIFIER_NODE which indicates which one. */
- %token 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 */
- %token SIZEOF ENUM /* STRUCT UNION */ IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
- %token BREAK CONTINUE RETURN GOTO ASM TYPEOF ALIGNOF
- %token ATTRIBUTE
-
- /* the reserved words... C++ extensions */
- %token <ttype> AGGR
- %token DELETE NEW OVERLOAD PRIVATE PUBLIC PROTECTED THIS OPERATOR
- %token DYNAMIC POINTSAT_LEFT_RIGHT LEFT_RIGHT
- %token <itype> SCOPE
-
- /* 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. */
-
- %left EMPTY /* used to resolve s/r with epsilon */
-
- /* Add precedence rules to solve dangling else s/r conflict */
- %nonassoc IF
- %nonassoc ELSE
-
- %left IDENTIFIER TYPENAME TYPENAME_COLON SCSPEC TYPESPEC TYPE_QUAL ENUM AGGR
-
- %left '{' ','
-
- %right <code> ASSIGN '='
- %right <code> '?' ':' RANGE
- %left <code> OROR
- %left <code> ANDAND
- %left <code> '|'
- %left <code> '^'
- %left <code> '&'
- %left <code> MIN_MAX
- %left <code> EQCOMPARE
- %left <code> ARITHCOMPARE
- %left <code> LSHIFT RSHIFT
- %left <code> '+' '-'
- %left <code> '*' '/' '%'
- %right <code> UNARY PLUSPLUS MINUSMINUS
- %left HYPERUNARY
- %left <ttype> PAREN_STAR_PAREN PAREN_X_SCOPE_STAR_PAREN PAREN_X_SCOPE_REF_PAREN LEFT_RIGHT
- %left <code> POINTSAT '.' '(' '['
-
- %right SCOPE /* C++ extension */
- %nonassoc NEW DELETE RAISE RAISES RERAISE TRY EXCEPT CATCH
- %right DYNAMIC
-
- %type <code> unop
-
- %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
- %type <ttype> expr_no_commas cast_expr unary_expr primary string STRING
- %type <ttype> typed_declspecs reserved_declspecs
- %type <ttype> typed_typespecs reserved_typespecquals
- %type <ttype> declmods typespec typespecqual_reserved
- %type <ttype> SCSPEC TYPESPEC TYPE_QUAL nonempty_type_quals maybe_type_qual
- %type <itype> initdecls notype_initdecls initdcl /* C++ modification */
- %type <ttype> init initlist maybeasm
- %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
- %type <ttype> maybe_attribute attribute_list attrib
-
- %type <ttype> compstmt except_stmts
-
- %type <ttype> declarator notype_declarator after_type_declarator
-
- %type <ttype> structsp opt.component_decl_list component_decl_list component_decl components component_declarator
- %type <ttype> enumlist enumerator
- %type <ttype> typename absdcl absdcl1 type_quals
- %type <ttype> xexpr see_typename parmlist parms parm bad_parm
-
- /* C++ extensions */
- %token <ttype> TYPENAME_COLON TYPENAME_SCOPE TYPENAME_ELLIPSIS
- %token <ttype> PRE_PARSED_FUNCTION_DECL EXTERN_LANG_STRING ALL
- %type <ttype> fn.def2 dummy_decl x_typespec return_id
- %type <ttype> class_head opt.init base_class_list base_class_visibility_list
- %type <ttype> after_type_declarator_no_typename
- %type <ttype> maybe_raises raise_identifier raise_identifiers
- %type <ttype> component_declarator0 scoped_identifier
- %type <ttype> forhead.1 identifier_or_opname operator_name
- %type <ttype> new delete object primary_no_id aggr nonmomentary_expr
- %type <itype> LC forhead.2 initdcl0 notype_initdcl0 wrapper member_init_list
- %type <itype> try
-
- %{
- /* the declaration found for the last IDENTIFIER token read in.
- yylex must look this up to detect typedefs, which get token type TYPENAME,
- so it is left around in case the identifier is not a typedef but is
- used in a context which makes it a reference to a variable. */
- tree lastiddecl;
-
- tree make_pointer_declarator (), make_reference_declarator ();
-
- tree combine_strings ();
- void reinit_parse_for_function ();
- void reinit_parse_for_method ();
-
- /* List of types and structure classes of the current declaration. */
- tree current_declspecs;
-
- int undeclared_variable_notice; /* 1 if we explained undeclared var errors. */
-
- int yylex ();
- extern FILE *finput;
- %}
-
- %%
- program: /* empty */
- | extdefs
- { finish_file (); }
- ;
-
- /* the reason for the strange actions in this rule
- is so that notype_initdecls when reached via datadef
- can find a valid list of type and sc specs in $0. */
-
- extdefs:
- {$<ttype>$ = NULL_TREE; } extdef
- | extdefs {$<ttype>$ = NULL_TREE; } extdef
- ;
-
- extdef:
- fndef
- { if (pending_inlines) do_pending_inlines (); }
- | datadef
- { if (pending_inlines) do_pending_inlines (); }
- | overloaddef
- | ASM '(' string ')' ';'
- { if (pedantic)
- warning ("ANSI C forbids use of `asm' keyword");
- if (TREE_CHAIN ($3)) $3 = combine_strings ($3);
- assemble_asm ($3); }
- | extern_lang_string '{' extdefs '}'
- { pop_lang_context (); }
- | extern_lang_string '{' '}'
- { pop_lang_context (); }
- | extern_lang_string fndef
- { if (pending_inlines) do_pending_inlines ();
- pop_lang_context (); }
- | extern_lang_string datadef
- { if (pending_inlines) do_pending_inlines ();
- pop_lang_context (); }
- ;
-
- extern_lang_string:
- EXTERN_LANG_STRING
- { push_lang_context ($1); }
- ;
-
- overloaddef:
- OVERLOAD ov_identifiers ';'
-
- ov_identifiers: IDENTIFIER
- { declare_overloaded ($1); }
- | ov_identifiers ',' IDENTIFIER
- { declare_overloaded ($3); }
- ;
-
- dummy_decl: /* empty */
- { $$ = NULL_TREE; }
- ;
-
- datadef:
- dummy_decl notype_initdecls ';'
- { if (pedantic)
- error ("ANSI C forbids data definition lacking type or storage class");
- else if (! flag_traditional)
- warning ("data definition lacks type or storage class"); }
- | declmods notype_initdecls ';'
- {}
- /* Normal case to make fast: "int i;". */
- | declmods declarator ';'
- { tree d;
- d = start_decl ($2, $1, 0, NULL_TREE);
- finish_decl (d, NULL_TREE, NULL_TREE);
- }
- | typed_declspecs initdecls ';'
- {
- end_exception_decls ();
- note_got_semicolon ($1);
- }
- /* Normal case: make this fast. */
- | typed_declspecs declarator ';'
- { tree d;
- d = start_decl ($2, $1, 0, NULL_TREE);
- finish_decl (d, NULL_TREE, NULL_TREE);
- end_exception_decls ();
- note_got_semicolon ($1);
- }
- | declmods ';'
- { error ("empty declaration"); }
- | typed_declspecs ';'
- {
- shadow_tag ($1);
- note_got_semicolon ($1);
- }
- | error ';'
- | error '}'
- | ';'
- ;
-
- fndef:
- fn.def1 base_init compstmt_or_error
- {
- finish_function (lineno, 1);
- /* finish_function performs these three statements:
-
- expand_end_bindings (getdecls (), 1, 0);
- poplevel (1, 1, 0);
-
- expand_end_bindings (0, 0, 0);
- poplevel (0, 0, 1);
- */
- }
- | fn.def1 return_init base_init compstmt_or_error
- {
- finish_function (lineno, 1);
- /* finish_function performs these three statements:
-
- expand_end_bindings (getdecls (), 1, 0);
- poplevel (1, 1, 0);
-
- expand_end_bindings (0, 0, 0);
- poplevel (0, 0, 1);
- */
- }
- | fn.def1 nodecls compstmt_or_error
- { finish_function (lineno, 0); }
- | fn.def1 return_init ';' nodecls compstmt_or_error
- { finish_function (lineno, 0); }
- | fn.def1 return_init nodecls compstmt_or_error
- { finish_function (lineno, 0); }
- | typed_declspecs declarator error
- {}
- | declmods notype_declarator error
- {}
- | dummy_decl notype_declarator error
- {}
- ;
-
- fn.def1:
- typed_declspecs declarator maybe_raises
- { if (! start_function ($1, $2, $3, 0))
- YYERROR;
- reinit_parse_for_function (); }
- | declmods notype_declarator maybe_raises
- { if (! start_function ($1, $2, $3, 0))
- YYERROR;
- reinit_parse_for_function (); }
- | dummy_decl notype_declarator maybe_raises
- { if (! start_function (NULL_TREE, $2, $3, 0))
- YYERROR;
- reinit_parse_for_function (); }
- | dummy_decl TYPENAME '(' parmlist ')' type_quals maybe_raises
- { if (! start_function (NULL_TREE, build_parse_node (CALL_EXPR, $2, $4, $6), $7, 0))
- YYERROR;
- reinit_parse_for_function (); }
- | dummy_decl TYPENAME LEFT_RIGHT type_quals maybe_raises
- { if (! start_function (NULL_TREE, build_parse_node (CALL_EXPR, $2, empty_parms (), $4), $5, 0))
- YYERROR;
- reinit_parse_for_function (); }
- | PRE_PARSED_FUNCTION_DECL
- { start_function (NULL_TREE, $1, NULL_TREE, 1);
- reinit_parse_for_function (); }
- ;
-
- /* more C++ complexity */
- fn.def2:
- typed_declspecs '(' parmlist ')' type_quals maybe_raises
- {
- tree decl = build_parse_node (CALL_EXPR, TREE_VALUE ($1), $3, $5);
- $$ = start_method (TREE_CHAIN ($1), decl, $6);
- if (! $$)
- YYERROR;
- if (yychar == YYEMPTY)
- yychar = YYLEX;
- reinit_parse_for_method (yychar, $$); }
- | typed_declspecs LEFT_RIGHT type_quals maybe_raises
- {
- tree decl = build_parse_node (CALL_EXPR, TREE_VALUE ($1), empty_parms (), $3);
- $$ = start_method (TREE_CHAIN ($1), decl, $4);
- if (! $$)
- YYERROR;
- if (yychar == YYEMPTY)
- yychar = YYLEX;
- reinit_parse_for_method (yychar, $$); }
- | typed_declspecs declarator maybe_raises
- { $$ = start_method ($1, $2, $3);
- if (! $$)
- YYERROR;
- if (yychar == YYEMPTY)
- yychar = YYLEX;
- reinit_parse_for_method (yychar, $$); }
- | declmods '(' parmlist ')' type_quals maybe_raises
- {
- tree decl = build_parse_node (CALL_EXPR, TREE_VALUE ($1), $3, $5);
- $$ = start_method (TREE_CHAIN ($1), decl, $6);
- if (! $$)
- YYERROR;
- if (yychar == YYEMPTY)
- yychar = YYLEX;
- reinit_parse_for_method (yychar, $$); }
- | declmods LEFT_RIGHT type_quals maybe_raises
- {
- tree decl = build_parse_node (CALL_EXPR, TREE_VALUE ($1), empty_parms (), $3);
- $$ = start_method (TREE_CHAIN ($1), decl, $4);
- if (! $$)
- YYERROR;
- if (yychar == YYEMPTY)
- yychar = YYLEX;
- reinit_parse_for_method (yychar, $$); }
- | declmods declarator maybe_raises
- { $$ = start_method ($1, $2, $3);
- if (! $$)
- YYERROR;
- if (yychar == YYEMPTY)
- yychar = YYLEX;
- reinit_parse_for_method (yychar, $$); }
- | dummy_decl notype_declarator maybe_raises
- { $$ = start_method (NULL_TREE, $2, $3);
- if (! $$)
- YYERROR;
- if (yychar == YYEMPTY)
- yychar = YYLEX;
- reinit_parse_for_method (yychar, $$); }
- ;
-
- return_id: RETURN IDENTIFIER
- {
- if (! current_function_parms_stored)
- store_parm_decls ();
- $$ = $2;
- }
- ;
-
- return_init: return_id opt.init
- {
- extern tree value_identifier;
- tree result;
-
- result = DECL_RESULT (current_function_decl);
- if (DECL_NAME (result) == value_identifier)
- DECL_NAME (result) = $1;
- else
- error ("return identifier `%s' already in place",
- IDENTIFIER_POINTER (DECL_NAME (result)));
- store_return_init ($2);
- }
- | return_id '(' exprlist ')'
- {
- extern tree value_identifier;
- tree result;
-
- result = DECL_RESULT (current_function_decl);
- if (DECL_NAME (result) == value_identifier)
- DECL_NAME (result) = $1;
- else
- error ("return identifier `%s' already in place",
- IDENTIFIER_POINTER (DECL_NAME (result)));
- store_return_init ($3);
- }
- | return_id LEFT_RIGHT
- {
- extern tree value_identifier;
- tree result;
-
- result = DECL_RESULT (current_function_decl);
- if (DECL_NAME (result) == value_identifier)
- DECL_NAME (result) = $1;
- else
- error ("return identifier `%s' already in place",
- IDENTIFIER_POINTER (DECL_NAME (result)));
- store_return_init (NULL_TREE);
- }
- ;
-
- base_init:
- ':' .set_base_init member_init_list
- { if ($3 == 0)
- error ("no base initializers given following ':'");
- setup_vtbl_ptr (); }
- ;
-
- .set_base_init:
- /* empty */
- {
- int preserve = (current_class_type
- && TYPE_USES_VIRTUAL_BASECLASSES (current_class_type));
- preserve = 0; /* "in charge" arg means we no longer
- need this hack. */
- if (! current_function_parms_stored)
- store_parm_decls ();
- else if (preserve)
- preserve_data ();
-
- /* Flag that we are processing base and member initializers. */
- current_vtable_decl = error_mark_node;
-
- if (DECL_CONSTRUCTOR_P (current_function_decl))
- {
- /* Make a contour for the initializer list. */
- pushlevel (0);
- clear_last_expr ();
- expand_start_bindings (0);
- }
- else if (current_class_type == NULL_TREE)
- error ("base initializers not allowed for non-member functions");
- else if (! DECL_CONSTRUCTOR_P (current_function_decl))
- error ("only constructors take base initializers");
- }
- ;
-
- member_init_list:
- /* empty */
- { $$ = 0; }
- | member_init
- { $$ = 1; }
- | member_init_list ',' member_init
- | member_init_list error
- ;
-
-
-
- member_init: '(' exprlist ')'
- {
- if (current_class_name && pedantic)
- warning ("old style base class initialization; use `%s (...)'",
- IDENTIFIER_POINTER (current_class_name));
- expand_member_init (C_C_D, NULL_TREE, $2);
- }
- | LEFT_RIGHT
- {
- if (current_class_name && pedantic)
- warning ("old style base class initialization; use `%s (...)'",
- IDENTIFIER_POINTER (current_class_name));
- expand_member_init (C_C_D, NULL_TREE, void_type_node);
- }
- | identifier '(' exprlist ')'
- {
- expand_member_init (C_C_D, $1, $3);
- }
- | identifier LEFT_RIGHT
- { expand_member_init (C_C_D, $1, void_type_node); }
- | scoped_identifier identifier '(' exprlist ')'
- {
- tree base, basetype;
- tree scopes = $1;
-
- if (TREE_CODE (scopes) == SCOPE_REF)
- /* just a pain to do this right now. */
- abort ();
-
- if (current_class_type == NULL_TREE
- || ! is_aggr_typedef (scopes, 1))
- break;
- basetype = get_base_type (TREE_TYPE (TREE_TYPE (scopes)),
- current_class_type, 1);
- if (basetype == error_mark_node)
- break;
- if (basetype == 0)
- {
- error_not_base_type (TREE_TYPE (TREE_TYPE (scopes)), current_class_type);
- break;
- }
-
- base = convert_pointer_to (basetype, current_class_decl);
- expand_member_init (build_indirect_ref (base), $2, $4);
- }
- | scoped_identifier identifier LEFT_RIGHT
- {
- tree basetype, base;
- tree scopes = $1;
- if (TREE_CODE (scopes) == SCOPE_REF)
- /* just a pain to do this right now. */
- abort ();
-
- if (current_class_type == NULL_TREE
- || ! is_aggr_typedef (scopes, 1))
- break;
- basetype = get_base_type (TREE_TYPE (TREE_TYPE (scopes)),
- current_class_type, 1);
- if (basetype == error_mark_node)
- break;
- if (basetype == 0)
- {
- error_not_base_type (TREE_TYPE (TREE_TYPE (scopes)), current_class_type);
- break;
- }
-
- base = convert_pointer_to (basetype, current_class_decl);
- expand_member_init (build_indirect_ref (base), $2, void_type_node);
- }
- ;
-
- identifier:
- IDENTIFIER
- | TYPENAME
- ;
-
- identifier_or_opname:
- IDENTIFIER
- | TYPENAME
- | '~' identifier
- { $$ = build_parse_node (BIT_NOT_EXPR, $2); }
- | operator_name
- { $$ = hack_operator ($1);
- if ($$ == error_mark_node)
- $$ = get_identifier ("<missing operator>"); }
- | wrapper IDENTIFIER
- { $$ = hack_wrapper ($1, NULL_TREE, $2); }
- | wrapper TYPENAME
- { $$ = hack_wrapper ($1, NULL_TREE, $2); }
- | wrapper operator_name
- { $$ = hack_wrapper ($1, NULL_TREE, $2); }
- | wrapper scoped_identifier IDENTIFIER
- { $$ = hack_wrapper ($1, $2, $3); }
- | wrapper scoped_identifier operator_name
- { $$ = hack_wrapper ($1, $2, $3); }
- ;
-
- wrapper: LEFT_RIGHT
- { $$ = 0; }
- | '~' LEFT_RIGHT
- { $$ = 1; }
- | LEFT_RIGHT '?'
- { $$ = 2; }
- ;
-
- unop: '-'
- { $$ = NEGATE_EXPR; }
- | '+'
- { $$ = CONVERT_EXPR; }
- | PLUSPLUS
- { $$ = PREINCREMENT_EXPR; }
- | MINUSMINUS
- { $$ = PREDECREMENT_EXPR; }
- | '!'
- { $$ = TRUTH_NOT_EXPR; }
- ;
-
- expr: nonnull_exprlist
- { $$ = build_compound_expr ($1); }
- /* Ugly, but faster. */
- | expr_no_commas
- {
- if (TREE_CODE ($1) == CALL_EXPR
- && TYPE_NEEDS_DESTRUCTOR (TREE_TYPE ($1)))
- $$ = cleanup_after_call ($1);
- }
- ;
-
- exprlist:
- /* empty */
- { $$ = NULL_TREE; }
- | nonnull_exprlist
- ;
-
- nonnull_exprlist:
- expr_no_commas
- { $$ = build_tree_list (NULL_TREE, $1); }
- | nonnull_exprlist ',' expr_no_commas
- { chainon ($1, build_tree_list (NULL_TREE, $3)); }
- | nonnull_exprlist ',' error
- { chainon ($1, build_tree_list (NULL_TREE, error_mark_node)); }
- ;
-
- unary_expr:
- primary %prec UNARY
- {
- if (TREE_CODE ($1) == TYPE_EXPR)
- $$ = build_component_type_expr (C_C_D, $1, NULL_TREE, 1);
- else
- $$ = $1;
- }
- | '*' cast_expr %prec UNARY
- { $$ = build_x_indirect_ref ($2, "unary *"); }
- | '&' cast_expr %prec UNARY
- { $$ = build_x_unary_op (ADDR_EXPR, $2); }
- | '~' cast_expr %prec UNARY
- { $$ = build_x_unary_op (BIT_NOT_EXPR, $2); }
- | unop cast_expr %prec UNARY
- { $$ = build_x_unary_op ($1, $2);
- if ($1 == NEGATE_EXPR && TREE_CODE ($2) == INTEGER_CST)
- TREE_NEGATED_INT ($$) = 1;
- }
- | SIZEOF unary_expr %prec UNARY
- { if (TREE_CODE ($2) == COMPONENT_REF
- && TREE_PACKED (TREE_OPERAND ($2, 1)))
- error ("sizeof applied to a bit-field");
- /* ANSI says arrays and functions are converted inside comma.
- But we can't really convert them in build_compound_expr
- because that would break commas in lvalues.
- So do the conversion here if operand was a comma. */
- if (TREE_CODE ($2) == COMPOUND_EXPR
- && (TREE_CODE (TREE_TYPE ($2)) == ARRAY_TYPE
- || TREE_CODE (TREE_TYPE ($2)) == FUNCTION_TYPE))
- $2 = default_conversion ($2);
- $$ = c_sizeof (TREE_TYPE ($2)); }
- | SIZEOF '(' typename ')' %prec HYPERUNARY
- { $$ = c_sizeof (groktypename ($3)); }
- | ALIGNOF unary_expr %prec UNARY
- { if (TREE_CODE ($2) == COMPONENT_REF
- && TREE_PACKED (TREE_OPERAND ($2, 1)))
- error ("`__alignof' applied to a bit-field");
- if (TREE_CODE ($2) == INDIRECT_REF)
- {
- tree t = TREE_OPERAND ($2, 0);
- tree best = t;
- int bestalign = TYPE_ALIGN (TREE_TYPE (TREE_TYPE (t)));
- while (TREE_CODE (t) == NOP_EXPR
- && TREE_CODE (TREE_TYPE (TREE_OPERAND (t, 0))) == POINTER_TYPE)
- {
- int thisalign;
- t = TREE_OPERAND (t, 0);
- thisalign = TYPE_ALIGN (TREE_TYPE (TREE_TYPE (t)));
- if (thisalign > bestalign)
- best = t, bestalign = thisalign;
- }
- $$ = c_alignof (TREE_TYPE (TREE_TYPE (best)));
- }
- else
- {
- /* ANSI says arrays and fns are converted inside comma.
- But we can't convert them in build_compound_expr
- because that would break commas in lvalues.
- So do the conversion here if operand was a comma. */
- if (TREE_CODE ($2) == COMPOUND_EXPR
- && (TREE_CODE (TREE_TYPE ($2)) == ARRAY_TYPE
- || TREE_CODE (TREE_TYPE ($2)) == FUNCTION_TYPE))
- $2 = default_conversion ($2);
- $$ = c_alignof (TREE_TYPE ($2));
- }
- }
- | ALIGNOF '(' typename ')' %prec HYPERUNARY
- { $$ = c_alignof (groktypename ($3)); }
-
- | new typename %prec '='
- { $$ = build_new ($1, $2, NULL_TREE); }
- | new x_typespec '(' exprlist ')'
- { $$ = build_new ($1, $2, $4); }
- | new x_typespec LEFT_RIGHT
- { $$ = build_new ($1, $2, NULL_TREE); }
- | new typename '=' init %prec '='
- { $$ = build_new ($1, $2, $4); }
- | new '(' typename ')'
- { $$ = build_new ($1, $3, NULL_TREE); }
- /* Unswallow a ':' which is probably meant for ?: expression. */
- | new TYPENAME_COLON
- { yyungetc (':', 1);
- $$ = build_new ($1, $2, NULL_TREE); }
-
- | delete cast_expr %prec UNARY
- { tree expr = convert_from_reference ($2);
- tree type = TREE_TYPE (expr);
-
- if (integer_zerop (expr))
- $$ = build1 (NOP_EXPR, void_type_node, expr);
- else if (TREE_CODE (type) != POINTER_TYPE)
- {
- error ("non-pointer type to `delete'");
- $$ = error_mark_node;
- }
- else if (! TYPE_LANG_SPECIFIC (TREE_TYPE (type))
- || ! TYPE_USES_VIRTUAL_BASECLASSES (TREE_TYPE (type)))
- $$ = build_delete (type, expr, integer_one_node,
- LOOKUP_NORMAL, $1);
- else
- {
- $$ = build (COMPOUND_EXPR, void_type_node,
- build (COMPOUND_EXPR, void_type_node,
- build_delete (type, expr, integer_zero_node, LOOKUP_NORMAL, 0),
- build_vbase_delete (TREE_TYPE (type),
- build_indirect_ref (expr))),
- build_x_delete (type, expr, $1));
- }
- }
- | delete '[' expr ']' cast_expr %prec UNARY
- {
- tree maxindex = build_binary_op (MINUS_EXPR, $3, integer_one_node);
- tree exp = convert_from_reference ($5);
- tree elt_size = c_sizeof (TREE_TYPE (exp));
-
- if (yychar == YYEMPTY)
- yychar = YYLEX;
-
- $$ = build_vec_delete (exp, maxindex, elt_size, NULL_TREE,
- integer_one_node, integer_zero_node);
- }
- ;
-
- cast_expr:
- unary_expr
- | '(' typename ')' expr_no_commas %prec UNARY
- { tree type = groktypename ($2);
- $$ = build_c_cast (type, $4); }
- | '(' typename ')' '{' initlist maybecomma '}' %prec UNARY
- { tree type = groktypename ($2);
- tree init = build_nt (CONSTRUCTOR, NULL_TREE, nreverse ($5));
- if (pedantic)
- warning ("ANSI C forbids constructor-expressions");
- /* Indicate that this was a GNU C constructor expression. */
- TREE_HAS_CONSTRUCTOR (init) = 1;
- $$ = digest_init (type, init, 0);
- if (TREE_CODE (type) == ARRAY_TYPE && TYPE_SIZE (type) == 0)
- {
- int failure = complete_array_type (type, $$, 1);
- if (failure)
- abort ();
- }
- }
- ;
-
- expr_no_commas:
- cast_expr
- | expr_no_commas '+' expr_no_commas
- { $$ = build_x_binary_op ($2, $1, $3); }
- | expr_no_commas '-' expr_no_commas
- { $$ = build_x_binary_op ($2, $1, $3); }
- | expr_no_commas '*' expr_no_commas
- { $$ = build_x_binary_op ($2, $1, $3); }
- | expr_no_commas '/' expr_no_commas
- { $$ = build_x_binary_op ($2, $1, $3); }
- | expr_no_commas '%' expr_no_commas
- { $$ = build_x_binary_op ($2, $1, $3); }
- | expr_no_commas LSHIFT expr_no_commas
- { $$ = build_x_binary_op ($2, $1, $3); }
- | expr_no_commas RSHIFT expr_no_commas
- { $$ = build_x_binary_op ($2, $1, $3); }
- | expr_no_commas ARITHCOMPARE expr_no_commas
- { $$ = build_x_binary_op ($2, $1, $3); }
- | expr_no_commas EQCOMPARE expr_no_commas
- { $$ = build_x_binary_op ($2, $1, $3); }
- | expr_no_commas MIN_MAX expr_no_commas
- { $$ = build_x_binary_op ($2, $1, $3); }
- | expr_no_commas '&' expr_no_commas
- { $$ = build_x_binary_op ($2, $1, $3); }
- | expr_no_commas '|' expr_no_commas
- { $$ = build_x_binary_op ($2, $1, $3); }
- | expr_no_commas '^' expr_no_commas
- { $$ = build_x_binary_op ($2, $1, $3); }
- | expr_no_commas ANDAND expr_no_commas
- { $$ = build_x_binary_op (TRUTH_ANDIF_EXPR, $1, $3); }
- | expr_no_commas OROR expr_no_commas
- { $$ = build_x_binary_op (TRUTH_ORIF_EXPR, $1, $3); }
- | expr_no_commas '?' xexpr ':' expr_no_commas
- { $$ = build_x_conditional_expr ($1, $3, $5); }
- | expr_no_commas '=' expr_no_commas
- { $$ = build_modify_expr ($1, NOP_EXPR, $3); }
- | expr_no_commas ASSIGN expr_no_commas
- { register tree rval;
- if (rval = build_opfncall (MODIFY_EXPR, LOOKUP_NORMAL, $1, $3, $2))
- $$ = rval;
- else
- $$ = build_modify_expr ($1, $2, $3); }
-
- /* Handle general members. */
- | object '*' expr_no_commas %prec UNARY
- { $$ = build_m_component_ref ($1, build_x_indirect_ref ($3, "unary *")); }
- | object '&' expr_no_commas %prec UNARY
- { $$ = build_m_component_ref ($1, build_x_unary_op (ADDR_EXPR, $3)); }
- | object unop expr_no_commas %prec UNARY
- { $$ = build_m_component_ref ($1, build_x_unary_op ($2, $3)); }
- | object '(' typename ')' expr_no_commas %prec UNARY
- { tree type = groktypename ($3);
- $$ = build_m_component_ref ($1, build_c_cast (type, $5)); }
- | object primary_no_id %prec UNARY
- { $$ = build_m_component_ref ($1, $2); }
- ;
-
- primary:
- IDENTIFIER
- { $$ = lastiddecl;
- if (yychar == YYEMPTY)
- yychar = YYLEX;
- /* Scope class declarations before global
- declarations. */
- if ($$ == IDENTIFIER_GLOBAL_VALUE ($1)
- && current_class_type != 0
- && TYPE_SIZE (current_class_type) == 0)
- {
- /* Could be from one of the base classes. */
- tree field = lookup_field (current_class_type, $1, 1);
- if (field == 0)
- ;
- else if (field == error_mark_node)
- /* We have already generated the error message.
- But we still want to return this value. */
- $$ = lookup_field (current_class_type, $1, 0);
- else if (TREE_CODE (field) == VAR_DECL
- || TREE_CODE (field) == CONST_DECL)
- $$ = field;
- else if (TREE_CODE (field) != FIELD_DECL)
- abort ();
- else
- {
- error_with_decl (field, "invalid use of member `%s' from base class `%s'",
- TYPE_NAME_STRING (DECL_FIELD_CONTEXT (field)));
- $$ = error_mark_node;
- break;
- }
- }
-
- if (!$$ || $$ == error_mark_node)
- {
- if (yychar == '(' || yychar == LEFT_RIGHT)
- {
- $$ = implicitly_declare ($1);
- assemble_external ($$);
- TREE_USED ($$) = 1;
- }
- else if (current_function_decl == 0)
- {
- error ("`%s' undeclared, outside of functions",
- IDENTIFIER_POINTER ($1));
- $$ = error_mark_node;
- }
- else
- {
- if (IDENTIFIER_GLOBAL_VALUE ($1) != error_mark_node
- || IDENTIFIER_ERROR_LOCUS ($1) != current_function_decl)
- {
- error ("`%s' undeclared (first use this function)",
- IDENTIFIER_POINTER ($1));
-
- if (! undeclared_variable_notice)
- {
- error ("(Each undeclared identifier is reported only once");
- error ("for each function it appears in.)");
- undeclared_variable_notice = 1;
- }
- }
- $$ = error_mark_node;
- /* Prevent repeated error messages. */
- IDENTIFIER_GLOBAL_VALUE ($1) = error_mark_node;
- SET_IDENTIFIER_ERROR_LOCUS ($1, current_function_decl);
- }
- }
- /* TREE_USED is set in `hack_identifier'. */
- if (TREE_CODE ($$) == CONST_DECL)
- {
- if (IDENTIFIER_CLASS_VALUE ($1) == $$)
- {
- /* Check visibility. */
- enum visibility_type visibility
- = compute_visibility (CLASSTYPE_AS_LIST (current_class_type), $$);
- if (visibility == visibility_private)
- error_with_decl ($$, "enum `%s' is private");
- /* protected is OK, since it's an enum of `this'. */
- }
- $$ = DECL_INITIAL ($$);
- }
- else $$ = hack_identifier ($$, $1, yychar);
- }
- | operator_name
- {
- tree op = hack_operator ($1);
- $$ = lookup_name (op);
- if ($$ == NULL_TREE)
- {
- error ("operator %s not defined", operator_name_string (op));
- $$ = error_mark_node;
- }
- }
- | CONSTANT
- | string
- { $$ = combine_strings ($1); }
- | '(' expr ')'
- { $$ = $2; }
- | '(' error ')'
- { $$ = error_mark_node; }
- | '('
- { if (current_function_decl == 0)
- {
- error ("braced-group within expression allowed only inside a function");
- YYERROR;
- }
- keep_next_level ();
- $<ttype>$ = expand_start_stmt_expr (); }
- compstmt ')'
- { tree rtl_exp;
- if (pedantic)
- warning ("ANSI C forbids braced-groups within expressions");
- rtl_exp = expand_end_stmt_expr ($<ttype>2);
- $$ = $3;
- TREE_USED ($$) = 0;
- /* Since the statements have side effects,
- consider this volatile. */
- TREE_VOLATILE ($$) = 1;
- TREE_TYPE ($$) = TREE_TYPE (rtl_exp);
- STMT_BODY ($$) = rtl_exp; }
- | primary '(' exprlist ')'
- { $$ = build_x_function_call ($1, $3, current_class_decl); }
- | primary LEFT_RIGHT
- { $$ = build_x_function_call ($1, NULL_TREE, current_class_decl); }
- | primary '[' expr ']'
- {
- do_array:
- {
- tree type = TREE_TYPE ($1);
- if (type == error_mark_node || $3 == error_mark_node)
- $$ = error_mark_node;
- else if (type == NULL_TREE)
- {
- /* Something has gone very wrong. Assume we
- are mistakenly reducing an expression
- instead of a declaration. */
- error ("parser may be lost: is there a '{' missing somewhere?");
- $$ = NULL_TREE;
- }
- else
- {
- if (TREE_CODE (type) == OFFSET_TYPE)
- type = TREE_TYPE (type);
- if (TREE_CODE (type) == REFERENCE_TYPE)
- type = TREE_TYPE (type);
-
- if (TYPE_LANG_SPECIFIC (type) &&
- TYPE_OVERLOADS_ARRAY_REF (type))
- $$ = build_opfncall (ARRAY_REF, LOOKUP_NORMAL, $1, $3);
- else if (TREE_CODE (type) == POINTER_TYPE
- || TREE_CODE (type) == ARRAY_TYPE)
- $$ = build_array_ref ($1, $3);
- else
- error("[] applied to non-pointer type");
- }
- }
- }
- | object identifier_or_opname %prec UNARY
- { $$ = build_component_ref ($1, $2, NULL_TREE, 1); }
- | object scoped_identifier identifier_or_opname %prec UNARY
- {
- tree basetype = (TREE_CODE ($2) == SCOPE_REF) ? TREE_OPERAND ($2, 1) : $2;
- if (is_aggr_typedef (basetype, 1))
- {
- basetype = TREE_TYPE (TREE_TYPE (basetype));
-
- if ($1 == error_mark_node)
- $$ = error_mark_node;
- else if (basetype_or_else (basetype, TREE_TYPE ($1)))
- $$ = build_component_ref (build_scoped_ref ($1, $2), $3, NULL_TREE, 1);
- else
- $$ = error_mark_node;
- }
- else $$ = error_mark_node;
- }
- | primary PLUSPLUS
- { $$ = build_x_unary_op (POSTINCREMENT_EXPR, $1); }
- | primary MINUSMINUS
- { $$ = build_x_unary_op (POSTDECREMENT_EXPR, $1); }
-
- /* C++ extensions */
- | THIS
- { if (current_class_decl)
- {
- #ifdef WARNING_ABOUT_CCD
- TREE_USED (current_class_decl) = 1;
- #endif
- $$ = current_class_decl;
- }
- else if (current_function_decl
- && DECL_STATIC_FUNCTION_P (current_function_decl))
- {
- error ("`this' is unavailable for static member functions");
- $$ = error_mark_node;
- }
- else
- {
- if (current_function_decl)
- error ("invalid use of `this' in non-member function");
- else
- error ("invalid use of `this' at top level");
- $$ = error_mark_node;
- }
- }
- | dummy_decl TYPE_QUAL '(' exprlist ')'
- {
- tree type;
- tree id = $2;
-
- /* This is a C cast in C++'s `functional' notation. */
- if ($4 == error_mark_node)
- {
- $$ = error_mark_node;
- break;
- }
- #if 0
- if ($4 == NULL_TREE)
- {
- error ("cannot cast null list to type `%s'",
- IDENTIFIER_POINTER (TYPE_NAME ($2)));
- $$ = error_mark_node;
- break;
- }
- #endif
- if (type == error_mark_node)
- $$ = error_mark_node;
- else
- {
- if (id == ridpointers[(int) RID_CONST])
- type = build_type_variant (integer_type_node, 1, 0);
- else if (id == ridpointers[(int) RID_VOLATILE])
- type = build_type_variant (integer_type_node, 0, 1);
- else if (id == ridpointers[(int) RID_FRIEND])
- {
- error ("cannot cast expression to `friend' type");
- $$ = error_mark_node;
- break;
- }
- else abort ();
- $$ = build_c_cast (type, build_compound_expr ($4));
- }
- }
- | x_typespec '(' exprlist ')'
- { $$ = build_functional_cast ($1, $3); }
- | x_typespec LEFT_RIGHT
- { $$ = build_functional_cast ($1, NULL_TREE); }
- | SCOPE IDENTIFIER
- {
- do_scoped_identifier:
- $$ = IDENTIFIER_GLOBAL_VALUE ($2);
- if (yychar == YYEMPTY)
- yychar = YYLEX;
- if (! $$)
- {
- if (yychar == '(' || yychar == LEFT_RIGHT)
- {
- $$ = implicitly_declare ($2);
- }
- else
- {
- if (IDENTIFIER_GLOBAL_VALUE ($2) != error_mark_node)
- error ("undeclared variable `%s' (first use here)",
- IDENTIFIER_POINTER ($2));
- $$ = error_mark_node;
- /* Prevent repeated error messages. */
- IDENTIFIER_GLOBAL_VALUE ($2) = error_mark_node;
- }
- }
- else if (TREE_CODE ($$) == CONST_DECL)
- $$ = DECL_INITIAL ($$);
- if (! TREE_USED ($$))
- {
- if (TREE_EXTERNAL ($$))
- assemble_external ($$);
- TREE_USED ($$) = 1;
- }
- }
- | SCOPE operator_name
- {
- $2 = hack_operator ($2);
- if (TREE_CODE ($2) == IDENTIFIER_NODE)
- goto do_scoped_identifier;
- do_scoped_operator:
- $$ = $2;
- }
- | scoped_identifier identifier_or_opname %prec HYPERUNARY
- { $$ = build_offset_ref ($1, $2); }
- | scoped_identifier identifier_or_opname '(' exprlist ')'
- { $$ = build_member_call ($1, $2, $4); }
- | scoped_identifier identifier_or_opname LEFT_RIGHT
- { $$ = build_member_call ($1, $2, NULL_TREE); }
-
- | object identifier_or_opname '(' exprlist ')'
- { $$ = build_method_call ($1, $2, $4, NULL_TREE,
- (LOOKUP_NORMAL|LOOKUP_AGGR)); }
- | object identifier_or_opname LEFT_RIGHT
- { $$ = build_method_call ($1, $2, NULL_TREE, NULL_TREE,
- (LOOKUP_NORMAL|LOOKUP_AGGR)); }
- | object scoped_identifier identifier_or_opname '(' exprlist ')'
- { $$ = build_scoped_method_call ($1, $2, $3, $5); }
- | object scoped_identifier identifier_or_opname LEFT_RIGHT
- { $$ = build_scoped_method_call ($1, $2, $3, NULL_TREE); }
- ;
-
- primary_no_id:
- '(' expr ')'
- { $$ = $2; }
- | '(' error ')'
- { $$ = error_mark_node; }
- | '('
- { if (current_function_decl == 0)
- {
- error ("braced-group within expression allowed only inside a function");
- YYERROR;
- }
- $<ttype>$ = expand_start_stmt_expr (); }
- compstmt ')'
- { if (pedantic)
- warning ("ANSI C forbids braced-groups within expressions");
- $$ = expand_end_stmt_expr ($<ttype>2); }
- | primary_no_id '(' exprlist ')'
- { $$ = build_x_function_call ($1, $3, current_class_decl); }
- | primary_no_id LEFT_RIGHT
- { $$ = build_x_function_call ($1, NULL_TREE, current_class_decl); }
- | primary_no_id '[' expr ']'
- { goto do_array; }
- | primary_no_id PLUSPLUS
- { $$ = build_x_unary_op (POSTINCREMENT_EXPR, $1); }
- | primary_no_id MINUSMINUS
- { $$ = build_x_unary_op (POSTDECREMENT_EXPR, $1); }
- | SCOPE IDENTIFIER
- { goto do_scoped_identifier; }
- | SCOPE operator_name
- { $2 = hack_operator ($2);
- if (TREE_CODE ($2) == IDENTIFIER_NODE)
- goto do_scoped_identifier;
- goto do_scoped_operator;
- }
- ;
-
- new: NEW
- { $$ = NULL_TREE; }
- | NEW '{' nonnull_exprlist '}'
- { $$ = $3; }
- | NEW DYNAMIC %prec EMPTY
- { $$ = void_type_node; }
- | NEW DYNAMIC '(' string ')'
- { $$ = combine_strings ($4); }
- | SCOPE new
- { if ($2 != NULL_TREE
- && TREE_CODE ($2) == TREE_LIST
- && TREE_PURPOSE ($2) != NULL_TREE)
- error ("extra `::' before `new' ignored");
- else
- $$ = build_tree_list (error_mark_node, $2);
- }
- ;
-
- delete: DELETE
- { $$ = NULL_TREE; }
- | SCOPE delete
- { if ($2)
- error ("extra `::' before `delete' ignored");
- $$ = error_mark_node;
- }
- ;
-
- /* Produces a STRING_CST with perhaps more STRING_CSTs chained onto it. */
- string:
- STRING
- | string STRING
- { $$ = chainon ($1, $2); }
- ;
-
- nodecls:
- /* empty */
- {
- if (! current_function_parms_stored)
- store_parm_decls ();
- setup_vtbl_ptr ();
- }
- ;
-
- object: primary '.'
- {
- if ($1 == error_mark_node)
- $$ = error_mark_node;
- else
- {
- tree type = TREE_TYPE ($1);
-
- if (IS_AGGR_TYPE (type)
- || (TREE_CODE (type) == REFERENCE_TYPE
- && IS_AGGR_TYPE (TREE_TYPE (type))))
- $$ = $1;
- else
- {
- error ("object in '.' expression is not of aggregate type");
- $$ = error_mark_node;
- }
- }
- }
- | primary POINTSAT
- {
- $$ = build_x_arrow ($1);
- }
- ;
-
- decl:
- typed_declspecs initdecls ';'
- {
- resume_momentary ($2);
- note_got_semicolon ($1);
- }
- /* Normal case: make this fast. */
- | typed_declspecs declarator ';'
- { tree d;
- int yes = suspend_momentary ();
- d = start_decl ($2, $1, 0, NULL_TREE);
- finish_decl (d, NULL_TREE, NULL_TREE);
- resume_momentary (yes);
- note_got_semicolon ($1);
- }
- | declmods notype_initdecls ';'
- { resume_momentary ($2); }
- /* Normal case: make this fast. */
- | declmods declarator ';'
- { tree d;
- int yes = suspend_momentary ();
- d = start_decl ($2, $1, 0, NULL_TREE);
- finish_decl (d, NULL_TREE, NULL_TREE);
- resume_momentary (yes);
- }
- | typed_declspecs ';'
- {
- shadow_tag ($1);
- note_got_semicolon ($1);
- }
- | declmods ';'
- { warning ("empty declaration"); }
- ;
-
- /* Any kind of declarator (thus, all declarators allowed
- after an explicit typespec). */
-
- declarator:
- after_type_declarator
- | notype_declarator
- ;
-
- /* 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. */
-
- typed_declspecs:
- x_typespec
- { $$ = list_hash_lookup_or_cons ($1); }
- | declmods typespec
- { $$ = hash_tree_chain ($2, $1); }
- | x_typespec reserved_declspecs
- { $$ = hash_tree_chain ($1, $2); }
- | declmods typespec reserved_declspecs
- { $$ = hash_tree_chain ($2, chainon ($3, $1)); }
- ;
-
- reserved_declspecs: /* empty
- { $$ = NULL_TREE; } */
- typespecqual_reserved
- { $$ = build_decl_list (NULL_TREE, $1); }
- | SCSPEC
- { $$ = build_decl_list (NULL_TREE, $1); }
- | reserved_declspecs typespecqual_reserved
- { $$ = decl_tree_cons (NULL_TREE, $2, $1); }
- | reserved_declspecs SCSPEC
- { $$ = decl_tree_cons (NULL_TREE, $2, $1); }
- ;
-
- /* List of just storage classes and type modifiers.
- A declaration can start with just this, but then it cannot be used
- to redeclare a typedef-name. */
-
- declmods:
- dummy_decl TYPE_QUAL
- { $$ = list_hash_lookup_or_cons ($2); }
- | dummy_decl SCSPEC
- { $$ = list_hash_lookup_or_cons ($2); }
- | declmods TYPE_QUAL
- { $$ = hash_tree_chain ($2, $1); }
- | declmods SCSPEC
- { $$ = hash_tree_chain ($2, $1); }
- ;
-
-
- /* Used instead of declspecs where storage classes are not allowed
- (that is, for typenames and structure components).
-
- C++ can takes storage classes for structure components.
- Don't accept a typedef-name if anything but a modifier precedes it. */
-
- typed_typespecs:
- x_typespec %prec EMPTY
- { $$ = build_decl_list (NULL_TREE, $1); }
- | nonempty_type_quals typespec
- { $$ = decl_tree_cons (NULL_TREE, $2, $1); }
- | x_typespec reserved_typespecquals
- { $$ = decl_tree_cons (NULL_TREE, $1, $2); }
- | nonempty_type_quals typespec reserved_typespecquals
- { $$ = decl_tree_cons (NULL_TREE, $2, chainon ($3, $1)); }
- ;
-
- reserved_typespecquals:
- typespecqual_reserved
- { $$ = build_decl_list (NULL_TREE, $1); }
- | reserved_typespecquals typespecqual_reserved
- { $$ = decl_tree_cons (NULL_TREE, $2, $1); }
- ;
-
- /* A typespec (but not a type qualifier).
- Once we have seen one of these in a declaration,
- if a typedef name appears then it is being redeclared. */
-
- typespec: TYPESPEC
- | structsp
- | TYPENAME
- | TYPEOF '(' expr ')'
- { $$ = TREE_TYPE ($3);
- if (pedantic)
- warning ("ANSI C forbids `typeof'"); }
- | TYPEOF '(' typename ')'
- { $$ = groktypename ($3);
- if (pedantic)
- warning ("ANSI C forbids `typeof'"); }
- ;
-
- /* A typespec that is a reserved word, or a type qualifier. */
-
- typespecqual_reserved: TYPESPEC
- | TYPE_QUAL
- | structsp
- ;
-
- x_typespec:
- dummy_decl TYPESPEC
- { $$ = $2; }
- | dummy_decl structsp
- { $$ = $2; }
- | dummy_decl TYPENAME
- { $$ = $2; }
- | dummy_decl TYPEOF '(' expr ')'
- { $$ = TREE_TYPE ($4);
- if (pedantic)
- warning ("ANSI C forbids `typeof'") }
- | dummy_decl TYPEOF '(' typename ')'
- { $$ = groktypename ($4);
- if (pedantic)
- warning ("ANSI C forbids `typeof'") }
- ;
-
- initdecls:
- initdcl0
- | initdecls ',' initdcl
- ;
-
- notype_initdecls:
- notype_initdcl0
- | notype_initdecls ',' initdcl
- ;
-
- maybeasm:
- /* empty */
- { $$ = NULL_TREE; }
- | ASM '(' string ')'
- { if (TREE_CHAIN ($3)) $3 = combine_strings ($3);
- $$ = $3;
- if (pedantic)
- warning ("ANSI C forbids use of `asm' keyword");
- }
- ;
-
- initdcl0:
- declarator maybe_raises maybeasm maybe_attribute '='
- { current_declspecs = $<ttype>0;
- $<itype>5 = suspend_momentary ();
- $<ttype>$ = start_decl ($1, current_declspecs, 1, $2); }
- init
- /* Note how the declaration of the variable is in effect while its init is parsed! */
- { finish_decl ($<ttype>6, $7, $3);
- $$ = $<itype>5; }
- | declarator maybe_raises maybeasm maybe_attribute
- { tree d;
- current_declspecs = $<ttype>0;
- $$ = suspend_momentary ();
- d = start_decl ($1, current_declspecs, 0, $2);
- finish_decl (d, NULL_TREE, $3); }
- ;
-
- initdcl:
- declarator maybe_raises maybeasm maybe_attribute '='
- { $<ttype>$ = start_decl ($1, current_declspecs, 1, $2); }
- init
- /* Note how the declaration of the variable is in effect while its init is parsed! */
- { finish_decl ($<ttype>6, $7, $3); }
- | declarator maybe_raises maybeasm maybe_attribute
- { tree d = start_decl ($1, current_declspecs, 0, $2);
- finish_decl (d, NULL_TREE, $3); }
- ;
-
- notype_initdcl0:
- notype_declarator maybe_raises maybeasm maybe_attribute '='
- { current_declspecs = $<ttype>0;
- $<itype>5 = suspend_momentary ();
- $<ttype>$ = start_decl ($1, current_declspecs, 1, $2); }
- init
- /* Note how the declaration of the variable is in effect while its init is parsed! */
- { finish_decl ($<ttype>6, $7, $3);
- $$ = $<itype>5; }
- | notype_declarator maybe_raises maybeasm maybe_attribute
- { tree d;
- current_declspecs = $<ttype>0;
- $$ = suspend_momentary ();
- d = start_decl ($1, current_declspecs, 0, $2);
- finish_decl (d, NULL_TREE, $3); }
- ;
-
- /* the * rules are dummies to accept the Apollo extended syntax
- so that the header files compile. */
- maybe_attribute:
- /* empty */
- { $$ = NULL_TREE; }
- | ATTRIBUTE '(' '(' attribute_list ')' ')'
- { $$ = $4; }
- ;
-
- attribute_list
- : attrib
- | attribute_list ',' attrib
- ;
-
- attrib
- : IDENTIFIER
- { warning ("`%s' attribute directive ignored",
- IDENTIFIER_POINTER ($1));
- $$ = $1; }
- | IDENTIFIER '(' CONSTANT ')'
- { /* if not "aligned(1)", then issue warning */
- if (strcmp (IDENTIFIER_POINTER ($1), "aligned") != 0
- || TREE_CODE ($3) != INTEGER_CST
- || TREE_INT_CST_LOW ($3) != 1)
- warning ("`%s' attribute directive ignored",
- IDENTIFIER_POINTER ($1));
- $$ = $1; }
- | IDENTIFIER '(' identifiers ')'
- { warning ("`%s' attribute directive ignored",
- IDENTIFIER_POINTER ($1));
- $$ = $1; }
- ;
-
- identifiers:
- IDENTIFIER
- { }
- | identifiers ',' IDENTIFIER
- { }
- ;
-
- init:
- expr_no_commas %prec '='
- | '{' '}'
- { $$ = build_nt (CONSTRUCTOR, NULL_TREE, NULL_TREE);
- TREE_HAS_CONSTRUCTOR ($$) = 1;
- if (pedantic)
- warning ("ANSI C forbids empty initializer braces"); }
- | '{' initlist '}'
- { $$ = build_nt (CONSTRUCTOR, NULL_TREE, nreverse ($2));
- TREE_HAS_CONSTRUCTOR ($$) = 1; }
- | '{' initlist ',' '}'
- { $$ = build_nt (CONSTRUCTOR, NULL_TREE, nreverse ($2));
- TREE_HAS_CONSTRUCTOR ($$) = 1; }
- | error
- { $$ = 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); }
- ;
-
- structsp:
- ENUM identifier '{'
- { $<itype>3 = suspend_momentary ();
- $$ = start_enum ($2); }
- enumlist maybecomma_warn '}'
- { $$ = finish_enum ($<ttype>4, $5);
- resume_momentary ($<itype>3);
- check_for_missing_semicolon ($<ttype>4); }
- | ENUM '{'
- { $<itype>2 = suspend_momentary ();
- $$ = start_enum (make_anon_name ()); }
- enumlist maybecomma_warn '}'
- { $$ = finish_enum ($<ttype>3, $4);
- resume_momentary ($<itype>1);
- check_for_missing_semicolon ($<ttype>3); }
- | ENUM identifier
- { $$ = xref_tag (enum_type_node, $2, NULL_TREE); }
-
- /* C++ extensions, merged with C to avoid shift/reduce conflicts */
- | class_head LC opt.component_decl_list '}'
- {
- if (TREE_CODE ($1) == ENUMERAL_TYPE)
- $$ = $1;
- else if (CLASSTYPE_DECLARED_EXCEPTION ($1))
- $$ = finish_exception ($1, $3);
- else
- $$ = finish_struct ($1, $3, 0, 0);
-
- if ($2 & 1)
- resume_temporary_allocation ();
- if ($2 & 2)
- resume_momentary (1);
- check_for_missing_semicolon ($$);
- }
- | class_head LC opt.component_decl_list '}' ';'
- { if (TREE_CODE ($1) == ENUMERAL_TYPE)
- $$ = $1;
- else if (CLASSTYPE_DECLARED_EXCEPTION ($1))
- warning ("empty exception declaration\n");
- else
- $$ = finish_struct ($1, $3, 1, 1);
- if ($2 & 1)
- resume_temporary_allocation ();
- if ($2 & 2)
- resume_momentary (1);
- note_got_semicolon ($$);
- yyungetc (';', 0); }
- | class_head %prec EMPTY
- { $$ = $1; }
- ;
-
- maybecomma:
- /* empty */
- | ','
- ;
-
- maybecomma_warn:
- /* empty */
- | ','
- { if (pedantic) warning ("comma at end of enumerator list"); }
- ;
-
- aggr: AGGR
- { $$ = $1; }
- | DYNAMIC AGGR
- { $$ = build_tree_list (NULL_TREE, $2); }
- | DYNAMIC '(' string ')' AGGR
- { $$ = build_tree_list ($3, $5); }
- | aggr SCSPEC
- { error ("storage class specifier `%s' not allow after struct or class", IDENTIFIER_POINTER ($2));
- }
- | aggr TYPESPEC
- { error ("type specifier `%s' not allow after struct or class", IDENTIFIER_POINTER ($2));
- }
- | aggr TYPE_QUAL
- { error ("type qualifier `%s' not allow after struct or class", IDENTIFIER_POINTER ($2));
- }
- | aggr AGGR
- { error ("no body nor ';' separates two class, struct or union declarations");
- }
-
- class_head:
- aggr %prec EMPTY
- { $$ = xref_tag ($1, make_anon_name (), NULL_TREE); }
- | aggr identifier %prec EMPTY
- { $$ = xref_tag ($1, $2, NULL_TREE); }
- | aggr IDENTIFIER ':' base_class_list %prec EMPTY
- { $$ = xref_tag ($1, $2, $4); }
- | aggr TYPENAME_COLON %prec EMPTY
- { yyungetc (':', 1);
- $$ = xref_tag ($1, $2, NULL_TREE); }
- | aggr TYPENAME_COLON base_class_list %prec EMPTY
- { $$ = xref_tag ($1, $2, $3); }
- ;
-
- base_class_list:
- identifier
- { if (! is_aggr_typedef ($1, 1))
- $$ = NULL_TREE;
- else $$ = build_tree_list ((tree)visibility_default, $1); }
- | base_class_visibility_list identifier
- { if (! is_aggr_typedef ($2, 1))
- $$ = NULL_TREE;
- else $$ = build_tree_list ($1, $2); }
- | base_class_list ',' identifier
- { if (! is_aggr_typedef ($3, 1))
- $$ = NULL_TREE;
- else $$ = chainon ($1, build_tree_list ((tree)visibility_default, $3)); }
- | base_class_list ',' base_class_visibility_list identifier
- { if (! is_aggr_typedef ($4, 1))
- $$ = NULL_TREE;
- else $$ = chainon ($1, build_tree_list ($3, $4)); }
- ;
-
- base_class_visibility_list:
- PUBLIC
- { $$ = (tree)visibility_public; }
- | PRIVATE
- { $$ = (tree)visibility_private; }
- | SCSPEC
- { if ($1 != ridpointers[(int)RID_VIRTUAL])
- sorry ("non-virtual visibility");
- $$ = (tree)visibility_default_virtual; }
- | base_class_visibility_list PUBLIC
- { if ($1 == (tree)visibility_private)
- error ("base class cannot be public and private");
- else if ($1 == (tree)visibility_default_virtual)
- $$ = (tree)visibility_public_virtual; }
- | base_class_visibility_list PRIVATE
- { if ($1 == (tree)visibility_public)
- error ("base class cannot be private and public");
- else if ($1 == (tree)visibility_default_virtual)
- $$ = (tree)visibility_private_virtual; }
- | base_class_visibility_list SCSPEC
- { if ($2 != ridpointers[(int)RID_VIRTUAL])
- sorry ("non-virtual visibility");
- if ($1 == (tree)visibility_public)
- $$ = (tree)visibility_public_virtual;
- else if ($1 == (tree)visibility_private)
- $$ = (tree)visibility_private_virtual; }
- ;
-
- LC: '{'
- { int temp = allocation_temporary_p ();
- int momentary = suspend_momentary ();
- if (temp)
- end_temporary_allocation ();
- $$ = (momentary << 1) | temp;
- if (! IS_AGGR_TYPE ($<ttype>0))
- {
- $<ttype>0 = make_lang_type (RECORD_TYPE);
- TYPE_NAME ($<ttype>0) = get_identifier ("erroneous type");
- }
- pushclass ($<ttype>0, 0); }
-
- opt.component_decl_list:
- /* empty */
- { $$ = NULL_TREE; }
- | component_decl_list
- { $$ = build_tree_list ((tree)visibility_default, $1); }
- | opt.component_decl_list PUBLIC ':' component_decl_list
- { $$ = chainon ($1, build_tree_list ((tree)visibility_public, $4)); }
- | opt.component_decl_list PRIVATE ':' component_decl_list
- { $$ = chainon ($1, build_tree_list ((tree)visibility_private, $4)); }
- | opt.component_decl_list PROTECTED ':' component_decl_list
- { $$ = chainon ($1, build_tree_list ((tree)visibility_protected, $4)); }
- | opt.component_decl_list PUBLIC ':'
- | opt.component_decl_list PRIVATE ':'
- | opt.component_decl_list PROTECTED ':'
- ;
-
- component_decl_list:
- component_decl
- { if ($1 == void_type_node) $$ = NULL_TREE; }
- | component_decl_list component_decl
- { if ($2 != NULL_TREE && $2 != void_type_node)
- $$ = chainon ($1, $2); }
- | component_decl_list ';'
- { if (pedantic)
- warning ("extra semicolon in struct or union specified"); }
- ;
-
- component_decl:
- typed_declspecs components ';'
- {
- do_components:
- if ($2 == void_type_node)
- /* We just got some friends.
- They have been recorded elsewhere. */
- $$ = NULL_TREE;
- else if ($2 == NULL_TREE)
- {
- tree t = groktypename (build_decl_list ($1, NULL_TREE));
- if (t == NULL_TREE)
- {
- error ("error in component specification");
- $$ = NULL_TREE;
- }
- else if (TREE_CODE (t) == UNION_TYPE)
- {
- /* handle anonymous unions */
- if (CLASSTYPE_METHOD_VEC (t))
- sorry ("methods in anonymous unions");
- $$ = build_lang_field_decl (FIELD_DECL, NULL_TREE, t);
- DECL_ANON_UNION_ELEM ($$) = 1;
- }
- else if (TREE_CODE (t) == ENUMERAL_TYPE)
- $$ = grok_enum_decls (t, NULL_TREE);
- else
- {
- if (TREE_CODE (t) == RECORD_TYPE
- && TYPE_LANG_SPECIFIC (t)
- && CLASSTYPE_DECLARED_EXCEPTION (t))
- shadow_tag ($1);
- $$ = NULL_TREE;
- }
- }
- else
- {
- tree t = TREE_TYPE ($2);
- if (TREE_CODE (t) == ENUMERAL_TYPE && TREE_NONLOCAL (t))
- $$ = grok_enum_decls (t, $2);
- else
- $$ = $2;
- }
- end_exception_decls ();
- }
- | typed_declspecs '(' parmlist ')' ';'
- { $$ = groktypefield ($1, $3); }
- | typed_declspecs '(' parmlist ')' '}'
- { error ("missing ';' before right brace");
- yyungetc ('}', 0);
- $$ = groktypefield ($1, $3); }
- | typed_declspecs LEFT_RIGHT ';'
- { $$ = groktypefield ($1, empty_parms ()); }
- | typed_declspecs LEFT_RIGHT '}'
- { error ("missing ';' before right brace");
- yyungetc ('}', 0);
- $$ = groktypefield ($1, empty_parms ()); }
- | declmods components ';'
- { goto do_components; }
- /* Normal case: make this fast. */
- | declmods declarator ';'
- { $$ = grokfield ($2, $1, 0, 0, 0, 0); }
- | declmods components '}'
- { error ("missing ';' before right brace");
- yyungetc ('}', 0);
- goto do_components; }
- | declmods '(' parmlist ')' ';'
- { $$ = groktypefield ($1, $3); }
- | declmods '(' parmlist ')' '}'
- { error ("missing ';' before right brace");
- yyungetc ('}', 0);
- $$ = groktypefield ($1, $3); }
- | declmods LEFT_RIGHT ';'
- { $$ = groktypefield ($1, empty_parms ()); }
- | declmods LEFT_RIGHT '}'
- { error ("missing ';' before right brace");
- yyungetc ('}', 0);
- $$ = groktypefield ($1, empty_parms ()); }
- | ':' expr_no_commas ';'
- { $$ = grokbitfield (NULL_TREE, NULL_TREE, $2); }
- | ':' expr_no_commas '}'
- { error ("missing ';' before right brace");
- yyungetc ('}', 0);
- $$ = grokbitfield (NULL_TREE, NULL_TREE, $2); }
- | error
- { $$ = NULL_TREE; }
-
- /* C++: handle constructors, destructors and inline functions */
- /* note that INLINE is like a TYPESPEC */
- | fn.def2 ':' /* base_init compstmt */
- { $$ = finish_method ($1); }
- | fn.def2 '{' /* nodecls compstmt */
- { $$ = finish_method ($1); }
- | dummy_decl notype_declarator maybe_raises ';'
- { $$ = grokfield ($2, NULL_TREE, $3, NULL_TREE, NULL_TREE); }
- | dummy_decl notype_declarator maybe_raises '}'
- { error ("missing ';' before right brace");
- yyungetc ('}', 0);
- $$ = grokfield ($2, NULL_TREE, $3, NULL_TREE, NULL_TREE); }
- ;
-
- components:
- /* empty: possibly anonymous */
- { $$ = NULL_TREE; }
- | component_declarator0
- | components ',' component_declarator
- {
- /* In this context, void_type_node encodes
- friends. They have been recorded elsewhere. */
- if ($1 == void_type_node)
- $$ = $3;
- else
- $$ = chainon ($1, $3);
- }
- ;
-
- component_declarator0:
- declarator maybe_raises maybeasm opt.init
- { current_declspecs = $<ttype>0;
- $$ = grokfield ($1, current_declspecs, $2, $4, $3); }
- | IDENTIFIER ':' expr_no_commas
- { current_declspecs = $<ttype>0;
- $$ = grokbitfield ($1, current_declspecs, $3); }
- | TYPENAME_COLON expr_no_commas
- { current_declspecs = $<ttype>0;
- $$ = grokbitfield ($1, current_declspecs, $2); }
- | ':' expr_no_commas
- { $$ = grokbitfield (NULL_TREE, NULL_TREE, $2); }
- ;
-
- component_declarator:
- declarator maybe_raises maybeasm opt.init
- { $$ = grokfield ($1, current_declspecs, $2, $4, $3); }
- | IDENTIFIER ':' expr_no_commas
- { $$ = grokbitfield ($1, current_declspecs, $3); }
- | TYPENAME_COLON expr_no_commas
- { $$ = grokbitfield ($1, current_declspecs, $2); }
- | ':' expr_no_commas
- { $$ = grokbitfield (NULL_TREE, NULL_TREE, $2); }
- ;
-
- /* We chain the enumerators in reverse order.
- Because of the way enums are built, the order is
- insignificant. Take advantage of this fact. */
-
- enumlist:
- enumerator
- | enumlist ',' enumerator
- { TREE_CHAIN ($3) = $1; $$ = $3; }
- ;
-
- enumerator:
- identifier
- { $$ = build_enumerator ($1, NULL_TREE); }
- | identifier '=' expr_no_commas
- { $$ = build_enumerator ($1, $3); }
- ;
-
- typename:
- typed_typespecs absdcl
- { $$ = build_decl_list ($1, $2); }
- | nonempty_type_quals absdcl
- { $$ = build_decl_list ($1, $2); }
- ;
-
- absdcl: /* an abstract declarator */
- /* empty */ %prec EMPTY
- { $$ = NULL_TREE; }
- | absdcl1 %prec EMPTY
- ;
-
- nonempty_type_quals:
- dummy_decl TYPE_QUAL
- { $$ = build_decl_list (NULL_TREE, $2); }
- | nonempty_type_quals TYPE_QUAL
- { $$ = decl_tree_cons (NULL_TREE, $2, $1); }
- ;
-
- type_quals:
- /* empty */
- { $$ = NULL_TREE; }
- | type_quals TYPE_QUAL
- { $$ = decl_tree_cons (NULL_TREE, $2, $1); }
- ;
-
- /* These rules must follow the rules for function declarations
- and component declarations. That way, longer rules are prefered. */
-
- /* An expression which will not live on the momentary obstack. */
- nonmomentary_expr:
- { $<itype>$ = suspend_momentary (); } expr
- { resume_momentary ($<itype>1); $$ = $2; }
-
- /* A declarator that is allowed only after an explicit typespec. */
- /* may all be followed by prec '.' */
- after_type_declarator:
- after_type_declarator '(' nonnull_exprlist ')' type_quals %prec '.'
- { $$ = build_parse_node (CALL_EXPR, $1, $3, $5); }
- | after_type_declarator '(' parmlist ')' type_quals %prec '.'
- { $$ = build_parse_node (CALL_EXPR, $1, $3, $5); }
- | after_type_declarator LEFT_RIGHT type_quals %prec '.'
- { $$ = build_parse_node (CALL_EXPR, $1, empty_parms (), $3); }
- | after_type_declarator '(' error ')' type_quals %prec '.'
- { $$ = build_parse_node (CALL_EXPR, $1, NULL_TREE, NULL_TREE); }
- | after_type_declarator '[' nonmomentary_expr ']'
- { $$ = build_parse_node (ARRAY_REF, $1, $3); }
- | after_type_declarator '[' ']'
- { $$ = build_parse_node (ARRAY_REF, $1, NULL_TREE); }
- | '(' dummy_decl after_type_declarator_no_typename ')'
- { $$ = $3; }
- | '(' '*' type_quals after_type_declarator ')'
- { $$ = make_pointer_declarator ($3, $4); }
- | PAREN_STAR_PAREN
- { $$ = $1;
- see_typename (); }
- | PAREN_X_SCOPE_STAR_PAREN
- { $$ = $1;
- see_typename (); }
- | PAREN_X_SCOPE_REF_PAREN
- { $$ = $1;
- see_typename (); }
- | '(' '&' type_quals after_type_declarator ')'
- { $$ = make_reference_declarator ($3, $4); }
- | '*' type_quals after_type_declarator %prec UNARY
- { $$ = make_pointer_declarator ($2, $3); }
- | '&' type_quals after_type_declarator %prec UNARY
- { $$ = make_reference_declarator ($2, $3); }
- | TYPENAME
- ;
-
- after_type_declarator_no_typename:
- after_type_declarator_no_typename '(' nonnull_exprlist ')' type_quals %prec '.'
- { $$ = build_parse_node (CALL_EXPR, $1, $3, $5); }
- | after_type_declarator_no_typename '(' parmlist ')' type_quals %prec '.'
- { $$ = build_parse_node (CALL_EXPR, $1, $3, $5); }
- | after_type_declarator_no_typename LEFT_RIGHT type_quals %prec '.'
- { $$ = build_parse_node (CALL_EXPR, $1, empty_parms (), $3); }
- | after_type_declarator_no_typename '(' error ')' type_quals %prec '.'
- { $$ = build_parse_node (CALL_EXPR, $1, NULL_TREE, NULL_TREE); }
- | after_type_declarator_no_typename '[' nonmomentary_expr ']'
- { $$ = build_parse_node (ARRAY_REF, $1, $3); }
- | after_type_declarator_no_typename '[' ']'
- { $$ = build_parse_node (ARRAY_REF, $1, NULL_TREE); }
- | '(' dummy_decl after_type_declarator_no_typename ')'
- { $$ = $3; }
- | PAREN_STAR_PAREN
- { $$ = $1;
- see_typename (); }
- | PAREN_X_SCOPE_STAR_PAREN
- { $$ = $1;
- see_typename (); }
- | PAREN_X_SCOPE_REF_PAREN
- { $$ = $1;
- see_typename (); }
- | '*' type_quals after_type_declarator %prec UNARY
- { $$ = make_pointer_declarator ($2, $3); }
- | '&' type_quals after_type_declarator %prec UNARY
- { $$ = make_reference_declarator ($2, $3); }
- ;
-
- /* A declarator allowed whether or not there has been
- an explicit typespec. These cannot redeclare a typedef-name. */
-
- notype_declarator:
- notype_declarator '(' nonnull_exprlist ')' type_quals %prec '.'
- { $$ = build_parse_node (CALL_EXPR, $1, $3, $5); }
- | notype_declarator '(' parmlist ')' type_quals %prec '.'
- { $$ = build_parse_node (CALL_EXPR, $1, $3, $5); }
- | notype_declarator LEFT_RIGHT type_quals %prec '.'
- { $$ = build_parse_node (CALL_EXPR, $1, empty_parms (), $3); }
- | notype_declarator '(' error ')' type_quals %prec '.'
- { $$ = build_parse_node (CALL_EXPR, $1, NULL_TREE, NULL_TREE); }
- | '(' notype_declarator ')'
- { $$ = $2; }
- | '*' type_quals notype_declarator %prec UNARY
- { $$ = make_pointer_declarator ($2, $3); }
- | '&' type_quals notype_declarator %prec UNARY
- { $$ = make_reference_declarator ($2, $3); }
- | notype_declarator '[' nonmomentary_expr ']'
- { $$ = build_parse_node (ARRAY_REF, $1, $3); }
- | notype_declarator '[' ']'
- { $$ = build_parse_node (ARRAY_REF, $1, NULL_TREE); }
- | IDENTIFIER
- { see_typename (); }
-
- /* C++ extensions. */
- | operator_name
- { see_typename (); }
-
- | '~' TYPENAME
- { see_typename ();
- $$ = build_parse_node (BIT_NOT_EXPR, $2); }
- | '~' IDENTIFIER
- { see_typename ();
- $$ = build_parse_node (BIT_NOT_EXPR, $2); }
- | LEFT_RIGHT identifier
- {
- see_typename ();
- $$ = build_parse_node (WRAPPER_EXPR, $2);
- }
- | LEFT_RIGHT '?' identifier
- {
- see_typename ();
- $$ = build_parse_node (WRAPPER_EXPR,
- build_parse_node (COND_EXPR, $3, NULL_TREE, NULL_TREE));
- }
- | '~' LEFT_RIGHT identifier
- { see_typename ();
- $$ = build_parse_node (ANTI_WRAPPER_EXPR, $3); }
- | TYPENAME_SCOPE type_quals notype_declarator %prec '('
- { see_typename ();
- $$ = build_parse_node (SCOPE_REF, $1, $3); }
- | TYPENAME_SCOPE TYPENAME %prec '('
- { $$ = build_parse_node (SCOPE_REF, $1, $2); }
- | TYPENAME_SCOPE see_typename TYPENAME '(' nonnull_exprlist ')' type_quals %prec '.'
- { $$ = build_parse_node (SCOPE_REF, $1,
- build_parse_node (CALL_EXPR, $3, $5, $7)); }
- | TYPENAME_SCOPE see_typename TYPENAME '(' parmlist ')' type_quals %prec '.'
- { $$ = build_parse_node (SCOPE_REF, $1,
- build_parse_node (CALL_EXPR, $3, $5, $7)); }
- | TYPENAME_SCOPE see_typename TYPENAME LEFT_RIGHT type_quals %prec '.'
- { $$ = build_parse_node (SCOPE_REF, $1,
- build_parse_node (CALL_EXPR, $3, empty_parms (), $5)); }
- | TYPENAME_SCOPE see_typename TYPENAME '(' error ')' type_quals %prec '.'
- { $$ = build_parse_node (SCOPE_REF, $1, build_parse_node (CALL_EXPR, $3, NULL_TREE, NULL_TREE)); }
- | SCOPE see_typename notype_declarator
- { $$ = build_parse_node (SCOPE_REF, NULL_TREE, $3); }
- ;
-
- scoped_identifier:
- TYPENAME_SCOPE
- | IDENTIFIER SCOPE
- | scoped_identifier TYPENAME_SCOPE
- { $$ = build_parse_node (SCOPE_REF, $1, $2); }
- ;
-
- absdcl1: /* a nonempty abstract declarator */
- '(' absdcl1 ')'
- { see_typename ();
- $$ = $2; }
- /* `(typedef)1' is `int'. */
- | '*' type_quals absdcl1 %prec EMPTY
- { $$ = make_pointer_declarator ($2, $3); }
- | '*' type_quals %prec EMPTY
- { $$ = make_pointer_declarator ($2, NULL_TREE); }
- | PAREN_STAR_PAREN
- { $$ = $1;
- see_typename (); }
- | PAREN_X_SCOPE_STAR_PAREN
- { $$ = $1;
- see_typename (); }
- | PAREN_X_SCOPE_REF_PAREN
- { $$ = $1;
- see_typename (); }
- | '&' type_quals absdcl1 %prec EMPTY
- { $$ = make_reference_declarator ($2, $3); }
- | '&' type_quals %prec EMPTY
- { $$ = make_reference_declarator ($2, NULL_TREE); }
- | absdcl1 '(' parmlist ')' type_quals %prec '.'
- { $$ = build_parse_node (CALL_EXPR, $1, $3, $5); }
- | absdcl1 LEFT_RIGHT type_quals %prec '.'
- { $$ = build_parse_node (CALL_EXPR, $1, empty_parms (), $3); }
- | absdcl1 '[' nonmomentary_expr ']' %prec '.'
- { $$ = build_parse_node (ARRAY_REF, $1, $3); }
- | absdcl1 '[' ']' %prec '.'
- { $$ = build_parse_node (ARRAY_REF, $1, NULL_TREE); }
- | '(' parmlist ')' type_quals %prec '.'
- { $$ = build_parse_node (CALL_EXPR, NULL_TREE, $2, $4); }
- | LEFT_RIGHT type_quals %prec '.'
- { $$ = build_parse_node (CALL_EXPR, NULL_TREE, empty_parms (), $2); }
- | '[' nonmomentary_expr ']' %prec '.'
- { $$ = build_parse_node (ARRAY_REF, NULL_TREE, $2); }
- | '[' ']' %prec '.'
- { $$ = build_parse_node (ARRAY_REF, NULL_TREE, NULL_TREE); }
- | TYPENAME_SCOPE type_quals absdcl1 %prec EMPTY
- { $$ = build_parse_node (SCOPE_REF, $1, $3); }
- | IDENTIFIER SCOPE type_quals absdcl1 %prec EMPTY
- { $$ = build_parse_node (SCOPE_REF, $1, $4); }
- | TYPENAME_SCOPE type_quals %prec EMPTY
- { $$ = build_parse_node (SCOPE_REF, $1, 0); }
- | IDENTIFIER SCOPE type_quals %prec EMPTY
- { $$ = build_parse_node (SCOPE_REF, $1, 0); }
- ;
-
- /* at least one statement, the first of which parses without error. */
- /* stmts is used only after decls, so an invalid first statement
- is actually regarded as an invalid decl and part of the decls. */
-
- stmts:
- stmt
- | stmts stmt
- | stmts errstmt
- ;
-
- errstmt: error ';'
- ;
-
- /* build the LET_STMT node before parsing its contents,
- so that any LET_STMTs within the context can have their display pointers
- set up to point at this one. */
-
- .pushlevel: /* empty */
- {
- pushlevel (0);
- clear_last_expr ();
- push_momentary ();
- expand_start_bindings (0);
- stmt_decl_msg = 0;
- }
- ;
-
- /* This is the body of a function definition.
- It causes syntax errors to ignore to the next openbrace. */
- compstmt_or_error:
- compstmt
- {}
- | error compstmt
- ;
-
- compstmt: '{' '}'
- { $$ = 0; }
- | '{' .pushlevel stmts '}'
- { tree decls;
-
- pop_implicit_try_blocks (NULL_TREE);
- decls = getdecls ();
- expand_end_bindings (decls, decls != 0, 1);
- $$ = poplevel (decls != 0, 1, 0);
- pop_momentary (); }
- | '{' .pushlevel error '}'
- { pop_implicit_try_blocks (NULL_TREE);
- expand_end_bindings (getdecls (), 0, 1);
- $$ = poplevel (0, 0, 0);
- pop_momentary (); }
- ;
-
- simple_if:
- IF '(' expr ')'
- { emit_line_note (input_filename, lineno);
- expand_start_cond (truthvalue_conversion ($3), 0);
- stmt_decl_msg = "if"; }
- stmt
- { stmt_decl_msg = 0; }
- ;
-
- stmt:
- compstmt
- { finish_stmt (); }
- | decl
- { if (stmt_decl_msg)
- error ("declaration after %s invalid", stmt_decl_msg);
- stmt_decl_msg = 0;
- finish_stmt (); }
- | expr ';'
- { emit_line_note (input_filename, lineno);
- /* Do default conversion if safe and possibly important,
- in case within ({...}). */
- if ((TREE_CODE (TREE_TYPE ($1)) == ARRAY_TYPE
- && lvalue_p ($1))
- || TREE_CODE (TREE_TYPE ($1)) == FUNCTION_TYPE)
- $1 = default_conversion ($1);
- expand_cplus_expr_stmt ($1);
- clear_momentary ();
- finish_stmt (); }
- | simple_if ELSE
- { expand_start_else ();
- stmt_decl_msg = "else"; }
- stmt
- { expand_end_else ();
- stmt_decl_msg = 0;
- finish_stmt (); }
- | simple_if %prec IF
- { expand_end_cond ();
- stmt_decl_msg = 0;
- finish_stmt (); }
- | WHILE
- { emit_nop ();
- emit_line_note (input_filename, lineno);
- expand_start_loop (1); }
- '(' expr ')'
- { expand_exit_loop_if_false (truthvalue_conversion ($4));
- stmt_decl_msg = "while"; }
- stmt
- {
- expand_end_loop ();
- stmt_decl_msg = 0;
- finish_stmt (); }
- | DO
- { emit_nop ();
- emit_line_note (input_filename, lineno);
- expand_start_loop_continue_elsewhere (1);
- stmt_decl_msg = "do"; }
- stmt WHILE
- { stmt_decl_msg = 0;
- expand_loop_continue_here (); }
- '(' expr ')' ';'
- { emit_line_note (input_filename, lineno);
- expand_exit_loop_if_false (truthvalue_conversion ($7));
- expand_end_loop ();
- clear_momentary ();
- finish_stmt (); }
- | forhead.1
- { emit_nop ();
- emit_line_note (input_filename, lineno);
- if ($1) expand_cplus_expr_stmt ($1);
- expand_start_loop_continue_elsewhere (1); }
- xexpr ';'
- { emit_line_note (input_filename, lineno);
- if ($3) expand_exit_loop_if_false (truthvalue_conversion ($3)); }
- xexpr ')'
- /* Don't let the tree nodes for $6 be discarded
- by clear_momentary during the parsing of the next stmt. */
- { push_momentary ();
- stmt_decl_msg = "for"; }
- stmt
- { emit_line_note (input_filename, lineno);
- expand_loop_continue_here ();
- if ($6) expand_cplus_expr_stmt ($6);
- pop_momentary ();
- expand_end_loop ();
- stmt_decl_msg = 0;
- finish_stmt (); }
- | forhead.2
- { emit_nop ();
- emit_line_note (input_filename, lineno);
- expand_start_loop_continue_elsewhere (1); }
- xexpr ';'
- { emit_line_note (input_filename, lineno);
- if ($3) expand_exit_loop_if_false (truthvalue_conversion ($3)); }
- xexpr ')'
- /* Don't let the tree nodes for $6 be discarded
- by clear_momentary during the parsing of the next stmt. */
- { push_momentary ();
- stmt_decl_msg = "for";
- $<itype>7 = lineno; }
- stmt
- { emit_line_note (input_filename, $<itype>7);
- expand_loop_continue_here ();
- if ($6) expand_cplus_expr_stmt ($6);
- pop_momentary ();
- expand_end_loop ();
- pop_implicit_try_blocks (NULL_TREE);
- if ($1)
- {
- register keep = $1 > 0;
- if (keep) expand_end_bindings (0, keep, 1);
- poplevel (keep, 1, 0);
- pop_momentary ();
- }
- stmt_decl_msg = 0;
- finish_stmt ();
- }
- | SWITCH '(' expr ')'
- { emit_line_note (input_filename, lineno);
- c_expand_start_case ($3);
- /* Don't let the tree nodes for $3 be discarded by
- clear_momentary during the parsing of the next stmt. */
- push_momentary ();
- stmt_decl_msg = "switch"; }
- stmt
- { expand_end_case ($3);
- pop_momentary ();
- stmt_decl_msg = 0;
- finish_stmt (); }
- | CASE expr ':'
- { register tree value = $2;
- register tree label
- = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
-
- /* build_c_cast puts on a NOP_EXPR to make a non-lvalue.
- Strip such NOP_EXPRs. */
- if (TREE_CODE (value) == NOP_EXPR
- && TREE_TYPE (value) == TREE_TYPE (TREE_OPERAND (value, 0)))
- value = TREE_OPERAND (value, 0);
-
- if (TREE_READONLY (value) && TREE_CODE (value) == VAR_DECL)
- {
- value = decl_constant_value (value);
- /* build_c_cast puts on a NOP_EXPR to make a non-lvalue.
- Strip such NOP_EXPRs. */
- if (TREE_CODE (value) == NOP_EXPR
- && TREE_TYPE (value) == TREE_TYPE (TREE_OPERAND (value, 0)))
- value = TREE_OPERAND (value, 0);
- }
- value = fold (value);
-
- if (TREE_CODE (value) != INTEGER_CST
- && value != error_mark_node)
- {
- error ("case label does not reduce to an integer constant");
- value = error_mark_node;
- }
- else
- /* Promote char or short to int. */
- value = default_conversion (value);
- if (value != error_mark_node)
- {
- int success = pushcase (value, label);
- if (success == 1)
- error ("case label not within a switch statement");
- else if (success == 2)
- error ("duplicate case value");
- else if (success == 3)
- warning ("case value out of range");
- }
- define_case_label (label);
- }
- stmt
- | CASE expr RANGE expr ':'
- { register tree value1 = $2;
- register tree value2 = $4;
- register tree label
- = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
-
- if (pedantic)
- {
- error ("ANSI C does not allow range expressions in switch statement");
- value1 = error_mark_node;
- value2 = error_mark_node;
- break;
- }
- /* build_c_cast puts on a NOP_EXPR to make a non-lvalue.
- Strip such NOP_EXPRs. */
- if (TREE_CODE (value1) == NOP_EXPR
- && TREE_TYPE (value1) == TREE_TYPE (TREE_OPERAND (value1, 0)))
- value1 = TREE_OPERAND (value1, 0);
-
- if (TREE_READONLY (value1) && TREE_CODE (value1) == VAR_DECL)
- {
- value1 = decl_constant_value (value1);
- /* build_c_cast puts on a NOP_EXPR to make a non-lvalue.
- Strip such NOP_EXPRs. */
- if (TREE_CODE (value1) == NOP_EXPR
- && TREE_TYPE (value1) == TREE_TYPE (TREE_OPERAND (value1, 0)))
- value1 = TREE_OPERAND (value1, 0);
- }
- value1 = fold (value1);
-
- /* build_c_cast puts on a NOP_EXPR to make a non-lvalue.
- Strip such NOP_EXPRs. */
- if (TREE_CODE (value2) == NOP_EXPR
- && TREE_TYPE (value2) == TREE_TYPE (TREE_OPERAND (value2, 0)))
- value2 = TREE_OPERAND (value2, 0);
-
- if (TREE_READONLY (value2) && TREE_CODE (value2) == VAR_DECL)
- {
- value2 = decl_constant_value (value2);
- /* build_c_cast puts on a NOP_EXPR to make a non-lvalue.
- Strip such NOP_EXPRs. */
- if (TREE_CODE (value2) == NOP_EXPR
- && TREE_TYPE (value2) == TREE_TYPE (TREE_OPERAND (value2, 0)))
- value2 = TREE_OPERAND (value2, 0);
- }
- value2 = fold (value2);
-
-
- if (TREE_CODE (value1) != INTEGER_CST
- && value1 != error_mark_node)
- {
- error ("case label does not reduce to an integer constant");
- value1 = error_mark_node;
- }
- if (TREE_CODE (value2) != INTEGER_CST
- && value2 != error_mark_node)
- {
- error ("case label does not reduce to an integer constant");
- value2 = error_mark_node;
- }
- if (value1 != error_mark_node
- && value2 != error_mark_node)
- {
- int success = pushcase_range (value1, value2, label);
- if (success == 1)
- error ("case label not within a switch statement");
- else if (success == 2)
- error ("duplicate (or overlapping) case value");
- else if (success == 3)
- warning ("case value out of range");
- else if (success == 4)
- warning ("empty range specified");
- }
- define_case_label (label);
- }
- stmt
- | DEFAULT ':'
- {
- register tree label
- = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
- int success = pushcase (NULL_TREE, label);
- if (success == 1)
- error ("default label not within a switch statement");
- else if (success == 2)
- error ("multiple default labels in one switch");
- }
- stmt
- | BREAK ';'
- { emit_line_note (input_filename, lineno);
- if ( ! expand_exit_something ())
- error ("break statement not within loop or switch"); }
- | CONTINUE ';'
- { emit_line_note (input_filename, lineno);
- if (! expand_continue_loop ())
- error ("continue statement not within a loop"); }
- | RETURN ';'
- { emit_line_note (input_filename, lineno);
- c_expand_return (NULL_TREE); }
- | RETURN expr ';'
- { emit_line_note (input_filename, lineno);
- c_expand_return ($2);
- finish_stmt ();
- }
- | ASM maybe_type_qual '(' string ')' ';'
- { if (TREE_CHAIN ($4)) $4 = combine_strings ($4);
- emit_line_note (input_filename, lineno);
- expand_asm ($4);
- finish_stmt ();
- }
- /* This is the case with just output operands. */
- | ASM maybe_type_qual '(' string ':' asm_operands ')' ';'
- { if (TREE_CHAIN ($4)) $4 = combine_strings ($4);
- emit_line_note (input_filename, lineno);
- c_expand_asm_operands ($4, $6, NULL_TREE, NULL_TREE,
- $2 == ridpointers[(int)RID_VOLATILE],
- input_filename, lineno);
- finish_stmt ();
- }
- /* This is the case with input operands as well. */
- | ASM maybe_type_qual '(' string ':' asm_operands ':' asm_operands ')' ';'
- { if (TREE_CHAIN ($4)) $4 = combine_strings ($4);
- emit_line_note (input_filename, lineno);
- c_expand_asm_operands ($4, $6, $8, NULL_TREE,
- $2 == ridpointers[(int)RID_VOLATILE],
- input_filename, lineno);
- finish_stmt ();
- }
- /* This is the case with clobbered registers as well. */
- | ASM maybe_type_qual '(' string ':' asm_operands ':'
- asm_operands ':' asm_clobbers ')' ';'
- { if (TREE_CHAIN ($4)) $4 = combine_strings ($4);
- emit_line_note (input_filename, lineno);
- c_expand_asm_operands ($4, $6, $8, $10,
- $2 == ridpointers[(int)RID_VOLATILE],
- input_filename, lineno);
- finish_stmt ();
- }
- | GOTO identifier ';'
- { tree decl;
- emit_line_note (input_filename, lineno);
- decl = lookup_label ($2);
- TREE_USED (decl) = 1;
- expand_goto (decl); }
- | IDENTIFIER ':'
- { tree label = define_label (input_filename, lineno, $1);
- emit_nop ();
- if (label)
- expand_label (label); }
- stmt
- { finish_stmt (); }
- | TYPENAME_COLON
- { tree label = define_label (input_filename, lineno, $1);
- if (label)
- expand_label (label); }
- stmt
- { finish_stmt (); }
- | ';'
- { finish_stmt (); }
-
- /* Exception handling extentions. */
- | RAISE raise_identifier '(' exprlist ')' ';'
- { expand_cplus_raise ($2, $4, NULL_TREE);
- finish_stmt (); }
- | RAISE raise_identifier LEFT_RIGHT ';'
- { expand_cplus_raise ($2, NULL_TREE, NULL_TREE);
- finish_stmt (); }
- | try EXCEPT identifier '{'
- {
- tree decl = cplus_expand_end_try ($1);
- $<ttype>2 = current_exception_type;
- $<ttype>4 = current_exception_decl;
- $<ttype>$ = current_exception_object;
- cplus_expand_start_except ($3, decl);
- pushlevel (0);
- clear_last_expr ();
- push_momentary ();
- expand_start_bindings (0);
- stmt_decl_msg = 0;
- }
- except_stmts '}'
- {
- tree decls = getdecls ();
- /* If there is a default exception to handle,
- handle it here. */
- if ($6)
- expand_expr ($6, 0, 0, 0);
- expand_end_bindings (decls, decls != 0, 1);
- poplevel (decls != 0, 1, 0);
- pop_momentary ();
- current_exception_type = $<ttype>2;
- current_exception_decl = $<ttype>4;
- current_exception_object = $<ttype>5;
- cplus_expand_end_except ($6);
- }
- | try RERAISE raise_identifiers /* ';' checked for at bottom. */
- { tree name = get_identifier ("(compiler error)");
- tree orig_ex_type = current_exception_type;
- tree orig_ex_decl = current_exception_decl;
- tree orig_ex_obj = current_exception_object;
- tree decl = cplus_expand_end_try ($1), decls;
-
- /* Start hidden EXCEPT. */
- cplus_expand_start_except (name, decl);
- pushlevel (0);
- clear_last_expr ();
- push_momentary ();
- expand_start_bindings (0);
- stmt_decl_msg = 0;
-
- /* This sets up the reraise. */
- expand_cplus_reraise ($3);
-
- decls = getdecls ();
- expand_end_bindings (decls, decls != 0, 1);
- poplevel (decls != 0, 1, 0);
- pop_momentary ();
- current_exception_type = orig_ex_type;
- current_exception_decl = orig_ex_decl;
- current_exception_object = orig_ex_obj;
- /* This will reraise for us. */
- cplus_expand_end_except (error_mark_node);
- if (yychar == YYEMPTY)
- yychar = YYLEX;
- if (yychar != ';')
- error ("missing ';' after reraise statement");
- }
- | try %prec EMPTY
- { yyerror ("`except' missing after `try' statement");
- /* Terminate the binding contour started by special
- code in `.pushlevel'. Automagically pops off
- the conditional we started for `try' stmt. */
- cplus_expand_end_try ($1);
- expand_end_bindings (0, 0, 1);
- poplevel (0, 0, 0);
- pop_momentary ();
- YYERROR; }
- ;
-
- try: TRY '{' '}'
- { $$ = 0; }
- | try_head stmts '}'
- {
- $$ = 1;
- pop_implicit_try_blocks (NULL_TREE);
- }
- | try_head error '}'
- {
- $$ = 0;
- pop_implicit_try_blocks (NULL_TREE);
- }
- ;
-
- try_head: TRY '{' { cplus_expand_start_try (0); } .pushlevel
-
- except_stmts:
- /* empty */
- { $$ = NULL_TREE; }
- | except_stmts raise_identifier
- {
- tree type = lookup_exception_type (current_class_type, current_class_name, $2);
- if (type == NULL_TREE)
- {
- error ("`%s' is not an exception type",
- IDENTIFIER_POINTER (TREE_VALUE ($2)));
- current_exception_type = NULL_TREE;
- TREE_TYPE (current_exception_object) = error_mark_node;
- }
- else
- {
- current_exception_type = type;
- /* In-place union. */
- TREE_TYPE (current_exception_object) = type;
- }
- expand_cplus_start_catch ($2);
- }
- compstmt
- {
- expand_cplus_end_catch (0);
- }
- | except_stmts DEFAULT
- {
- if ($1)
- error ("duplicate default in exception handler");
- current_exception_type = NULL_TREE;
- /* Takes it right out of scope. */
- TREE_TYPE (current_exception_object) = error_mark_node;
-
- if (! expand_catch_default ())
- compiler_error ("default catch botch");
-
- /* The default exception is handled as the
- last in the chain of exceptions handled. */
- do_pending_stack_adjust ();
- start_sequence ();
- $1 = make_node (RTL_EXPR);
- TREE_TYPE ($1) = void_type_node;
- }
- compstmt
- {
- do_pending_stack_adjust ();
- if (! expand_catch (NULL_TREE))
- compiler_error ("except nesting botch");
- if (! expand_escape_except ())
- compiler_error ("except nesting botch");
- RTL_EXPR_SEQUENCE ($1) = (struct rtx_def *)get_insns ();
- end_sequence ();
- }
- ;
-
- forhead.1:
- FOR '(' ';'
- { $$ = NULL_TREE; }
- | FOR '(' expr ';'
- { $$ = $3; }
- | FOR '(' '{' '}'
- { $$ = NULL_TREE; }
- ;
-
- forhead.2:
- FOR '(' decl
- { $$ = 0; }
- | FOR '(' error ';'
- { $$ = 0; }
- | FOR '(' '{' .pushlevel stmts '}'
- { $$ = 1; }
- | FOR '(' '{' .pushlevel error '}'
- { $$ = -1; }
- ;
-
- /* Either a type-qualifier or nothing. First thing in an `asm' statement. */
-
- maybe_type_qual:
- /* empty */
- { if (pedantic)
- warning ("ANSI C forbids use of `asm' keyword");
- emit_line_note (input_filename, lineno); }
- | TYPE_QUAL
- { if (pedantic)
- warning ("ANSI C forbids use of `asm' keyword");
- emit_line_note (input_filename, lineno); }
- ;
-
- xexpr:
- /* empty */
- { $$ = NULL_TREE; }
- | expr
- | error
- { $$ = NULL_TREE; }
- ;
-
- /* These are the operands other than the first string and colon
- in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
- asm_operands: /* empty */
- { $$ = NULL_TREE; }
- | nonnull_asm_operands
- ;
-
- nonnull_asm_operands:
- asm_operand
- | nonnull_asm_operands ',' asm_operand
- { $$ = chainon ($1, $3); }
- ;
-
- asm_operand:
- STRING '(' expr ')'
- { $$ = build_tree_list ($1, $3); }
- ;
-
- asm_clobbers:
- STRING
- { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); }
- | asm_clobbers ',' STRING
- { $$ = tree_cons (NULL_TREE, $3, $1); }
- ;
-
- /* This is what appears inside the parens in a function declarator.
- Its value is represented in the format that grokdeclarator expects.
-
- In C++, declaring a function with no parameters
- means that that function takes *no* parameters. */
- parmlist: /* empty */
- {
- if (strict_prototype)
- $$ = void_list_node;
- else
- $$ = NULL_TREE;
- }
- | parms
- {
- $$ = chainon ($1, void_list_node);
- TREE_PARMLIST ($$) = 1;
- }
- | parms ',' ELLIPSIS
- {
- $$ = $1;
- TREE_PARMLIST ($$) = 1;
- }
- /* C++ allows an ellipsis without a separating ',' */
- | parms ELLIPSIS
- {
- $$ = $1;
- TREE_PARMLIST ($$) = 1;
- }
- | ELLIPSIS
- {
- $$ = NULL_TREE;
- }
- | TYPENAME_ELLIPSIS
- {
- $$ = $1;
- TREE_PARMLIST ($$) = 1;
- }
- | parms TYPENAME_ELLIPSIS
- {
- $$ = $1;
- TREE_PARMLIST ($$) = 1;
- }
- | parms ':'
- {
- /* This helps us recover from really nasty
- parse errors, for example, a missing right
- parenthesis. */
- yyerror ("possibly missing ')'");
- $$ = chainon ($1, void_list_node);
- TREE_PARMLIST ($$) = 1;
- yyungetc (':', 0);
- yychar = ')';
- }
- ;
-
- /* A nonempty list of parameter declarations or type names. */
- parms:
- parm opt.init
- { $$ = build_tree_list ($2, $1); }
- | parms ',' parm opt.init
- { $$ = chainon ($1, build_tree_list ($4, $3)); }
- | parms ',' bad_parm opt.init
- { $$ = chainon ($1, build_tree_list ($4, $3)); }
- ;
-
- /* A single parameter declaration or parameter type name,
- as found in a parmlist. */
- parm:
- typed_declspecs dont_see_typename notype_declarator
- { $$ = build_tree_list ($1, $3);
- see_typename (); }
- | typed_declspecs dont_see_typename absdcl
- { $$ = build_tree_list ($1, $3);
- see_typename (); }
- | declmods dont_see_typename notype_declarator
- { $$ = build_tree_list ($1, $3);
- see_typename (); }
- | declmods dont_see_typename absdcl
- { $$ = build_tree_list ($1, $3);
- see_typename (); }
- ;
-
- see_typename: type_quals
- { see_typename (); }
- ;
-
- dont_see_typename: /* empty */
- { dont_see_typename (); }
- ;
-
- bad_parm:
- dummy_decl notype_declarator
- {
- warning ("type specifier omitted for parameter");
- $$ = build_tree_list (TREE_PURPOSE (TREE_VALUE ($<ttype>-1)), $2);
- }
- | dummy_decl absdcl
- {
- warning ("type specifier omitted for parameter");
- $$ = build_tree_list (TREE_PURPOSE (TREE_VALUE ($<ttype>-1)), $2);
- }
- ;
-
- /* C++ extension: allow for initialization */
- opt.init:
- /* empty */
- { $$ = NULL_TREE; }
- | '=' init
- { $$ = $2; }
- ;
-
- maybe_raises:
- /* empty */
- { $$ = NULL_TREE; }
- | RAISES raise_identifiers %prec EMPTY
- { $$ = $2; }
- ;
-
- raise_identifier:
- ALL
- { $$ = void_list_node; }
- | IDENTIFIER
- { $$ = build_decl_list (NULL_TREE, $1); }
- | TYPENAME
- { $$ = build_decl_list (NULL_TREE, $1); }
- | SCOPE IDENTIFIER
- { $$ = build_decl_list (void_type_node, $2); }
- | SCOPE TYPENAME
- { $$ = build_decl_list (void_type_node, $2); }
- | scoped_identifier IDENTIFIER
- { $$ = build_decl_list ($1, $2); }
- | scoped_identifier TYPENAME
- { $$ = build_decl_list ($1, $2); }
-
- raise_identifiers:
- raise_identifier
- | raise_identifiers ',' raise_identifier
- {
- TREE_CHAIN ($3) = $1;
- $$ = $3;
- }
- ;
-
- operator_name:
- OPERATOR '*'
- { $$ = build_opid (0, MULT_EXPR); }
- | OPERATOR '/'
- { $$ = build_opid (0, TRUNC_DIV_EXPR); }
- | OPERATOR '%'
- { $$ = build_opid (0, TRUNC_MOD_EXPR); }
- | OPERATOR '+'
- { $$ = build_opid (0, PLUS_EXPR); }
- | OPERATOR '-'
- { $$ = build_opid (0, MINUS_EXPR); }
- | OPERATOR '&'
- { $$ = build_opid (0, BIT_AND_EXPR); }
- | OPERATOR '|'
- { $$ = build_opid (0, BIT_IOR_EXPR); }
- | OPERATOR '^'
- { $$ = build_opid (0, BIT_XOR_EXPR); }
- | OPERATOR '~'
- { $$ = build_opid (0, BIT_NOT_EXPR); }
- | OPERATOR ARITHCOMPARE
- { $$ = build_opid (0, $2); }
- | OPERATOR EQCOMPARE
- { $$ = build_opid (0, $2); }
- | OPERATOR ASSIGN
- { $$ = build_opid (MODIFY_EXPR, $2); }
- | OPERATOR '='
- {
- $$ = build_opid (MODIFY_EXPR, NOP_EXPR);
- if (current_class_type)
- {
- TYPE_HAS_ASSIGNMENT (current_class_type) = 1;
- TYPE_GETS_ASSIGNMENT (current_class_type) = 1;
- }
- }
- | OPERATOR LSHIFT
- { $$ = build_opid (0, $2); }
- | OPERATOR RSHIFT
- { $$ = build_opid (0, $2); }
- | OPERATOR PLUSPLUS
- { $$ = build_opid (0, POSTINCREMENT_EXPR); }
- | OPERATOR MINUSMINUS
- { $$ = build_opid (0, PREDECREMENT_EXPR); }
- | OPERATOR ANDAND
- { $$ = build_opid (0, TRUTH_ANDIF_EXPR); }
- | OPERATOR OROR
- { $$ = build_opid (0, TRUTH_ORIF_EXPR); }
- | OPERATOR '!'
- { $$ = build_opid (0, TRUTH_NOT_EXPR); }
- | OPERATOR '?' ':'
- { $$ = build_opid (0, COND_EXPR); }
- | OPERATOR MIN_MAX
- { $$ = build_opid (0, $2); }
- | OPERATOR POINTSAT %prec EMPTY
- { $$ = build_opid (0, COMPONENT_REF); }
- | OPERATOR POINTSAT_LEFT_RIGHT type_quals %prec '.'
- {
- if (yychar == YYEMPTY)
- yychar = YYLEX;
- if (yychar == '(' || yychar == LEFT_RIGHT)
- {
- $$ = build_opid (0, METHOD_CALL_EXPR);
- if (current_class_type)
- {
- tree t = current_class_type;
- while (t)
- {
- TYPE_OVERLOADS_METHOD_CALL_EXPR (t) = 1;
- t = TYPE_NEXT_VARIANT (t);
- }
- }
- }
- else
- $$ = build_parse_node (CALL_EXPR, build_opid (0, COMPONENT_REF), void_list_node, $3);
- }
- | OPERATOR LEFT_RIGHT
- { $$ = build_opid (0, CALL_EXPR);
- if (current_class_type)
- {
- tree t = current_class_type;
- while (t)
- {
- TYPE_OVERLOADS_CALL_EXPR (t) = 1;
- t = TYPE_NEXT_VARIANT (t);
- }
- }
- }
- | OPERATOR '[' ']'
- { $$ = build_opid (0, ARRAY_REF);
- if (current_class_type)
- {
- tree t = current_class_type;
- while (t)
- {
- TYPE_OVERLOADS_ARRAY_REF (t) = 1;
- t = TYPE_NEXT_VARIANT (t);
- }
- }
- }
- | OPERATOR NEW
- {
- $$ = build_opid (0, NEW_EXPR);
- if (current_class_type)
- {
- tree t = current_class_type;
- while (t)
- {
- TREE_GETS_NEW (t) = 1;
- t = TYPE_NEXT_VARIANT (t);
- }
- }
- }
- | OPERATOR DELETE
- {
- $$ = build_opid (0, DELETE_EXPR);
- if (current_class_type)
- {
- tree t = current_class_type;
- while (t)
- {
- TREE_GETS_DELETE (t) = 1;
- t = TYPE_NEXT_VARIANT (t);
- }
- }
- }
-
- /* These should do `groktypename' and set up TREE_HAS_X_CONVERSION
- here, rather than doing it in class.c . */
- | OPERATOR typed_typespecs absdcl
- {
- $$ = build1 (TYPE_EXPR, $2, $3);
- }
- | OPERATOR error
- { $$ = build_opid (ERROR_MARK, ERROR_MARK); }
- ;
-
- %%
-
- #if YYDEBUG != 0
- db_yyerror (s, yyps, yychar)
- char *s;
- short *yyps;
- int yychar;
- {
- FILE *yyout;
- char buf[1024];
- int st;
-
- yyerror (s);
- printf ("State is %d, input token number is %d.\n", *yyps, yychar);
-
- #ifdef PARSE_OUTPUT
- if (*yyps < 1) fatal ("Cannot start from here");
- else if ((yyout = fopen (PARSE_OUTPUT, "r")) == NULL)
- error ("cannot open file %s", PARSE_OUTPUT);
- else
- {
- printf ("That is to say,\n\n");
- while (fgets(buf, sizeof (buf)-1, yyout))
- {
- if (buf[0] != 's') continue;
- st = atoi (buf+6);
- if (st != *yyps) continue;
- printf ("%s", buf);
- while (fgets (buf, sizeof (buf)-1, yyout))
- {
- if (buf[0] == 's') break;
- printf ("%s", buf);
- }
- break;
- }
- printf ("With the token %s\n", yytname[YYTRANSLATE (yychar)]);
- fclose (yyout);
- }
- #endif
- }
- #endif
-
- void
- yyerror (string)
- char *string;
- {
- extern FILE *finput;
- extern char *token_buffer;
- char buf[200];
-
- strcpy (buf, string);
-
- /* We can't print string and character constants well
- because the token_buffer contains the result of processing escapes. */
- if (end_of_file || feof (finput))
- strcat (buf, " at end of input");
- else if (token_buffer[0] == 0)
- strcat (buf, " at null character");
- else if (token_buffer[0] == '"')
- strcat (buf, " before string constant");
- else if (token_buffer[0] == '\'')
- strcat (buf, " before character constant");
- else
- strcat (buf, " before `%s'");
-
- error (buf, token_buffer);
- }
-
- static int *reduce_count;
- static int *token_count;
-
- #define REDUCE_LENGTH (sizeof (yyr2) / sizeof (yyr2[0]))
- #define TOKEN_LENGTH (256 + YYNTBASE + 1)
-
- int *
- init_parse ()
- {
- #ifdef GATHER_STATISTICS
- reduce_count = (int *)malloc (sizeof (int) * (REDUCE_LENGTH + 1));
- bzero (reduce_count, sizeof (int) * (REDUCE_LENGTH + 1));
- reduce_count += 1;
- token_count = (int *)malloc (sizeof (int) * TOKEN_LENGTH);
- bzero (token_count, sizeof (int) * TOKEN_LENGTH);
- #endif
- return token_count;
- }
-
- #ifdef GATHER_STATISTICS
- void
- yyhook (yyn)
- int yyn;
- {
- reduce_count[yyn] += 1;
- }
- #endif
-
- static int reduce_cmp (p, q)
- int *p, *q;
- {
- return reduce_count[*q] - reduce_count[*p];
- }
-
- static int token_cmp (p, q)
- int *p, *q;
- {
- return token_count[*q] - token_count[*p];
- }
-
- void
- print_parse_statistics ()
- {
- int i;
- int maxlen = REDUCE_LENGTH;
- unsigned *sorted;
-
- if (reduce_count[-1] == 0)
- return;
-
- if (TOKEN_LENGTH > REDUCE_LENGTH)
- maxlen = TOKEN_LENGTH;
- sorted = (unsigned *) alloca (sizeof (int) * maxlen);
-
- for (i = 0; i < TOKEN_LENGTH; i++)
- sorted[i] = i;
- qsort (sorted, TOKEN_LENGTH, sizeof (int), token_cmp);
- for (i = 0; i < TOKEN_LENGTH; i++)
- {
- int index = sorted[i];
- if (token_count[index] == 0)
- break;
- if (token_count[index] < token_count[-1])
- break;
- fprintf (stderr, "token %d", index);
- #if YYDEBUG
- fprintf (stderr, ", `%s'", yytname[YYTRANSLATE (index)]);
- #endif
- fprintf (stderr, ", count = %d\n", token_count[index]);
- }
- fprintf (stderr, "\n");
- for (i = 0; i < REDUCE_LENGTH; i++)
- sorted[i] = i;
- qsort (sorted, REDUCE_LENGTH, sizeof (int), reduce_cmp);
- for (i = 0; i < REDUCE_LENGTH; i++)
- {
- int index = sorted[i];
- if (reduce_count[index] == 0)
- break;
- if (reduce_count[index] < reduce_count[-1])
- break;
- fprintf (stderr, "rule %d", index);
- #if YYDEBUG
- fprintf (stderr, ", line %d", yyrline[index]);
- #endif
- fprintf (stderr, ", count = %d\n", reduce_count[index]);
- }
- fprintf (stderr, "\n");
- }
-