mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-10 23:32:09 +00:00
1eef2a8b5e
When a type is aliased, the alias has two type chains: the simple type chain with all other aliases stripped, and the full type chain. There are still plenty of bugs in it, but having the clean type chain takes care of the major issue that was in the previous attempt as only the head of the type-chain needs to be skipped for type comparison. Most of the bugs are in finding the locations where the head needs to be skipped.
2171 lines
46 KiB
Text
2171 lines
46 KiB
Text
%{
|
||
/*
|
||
qc-parse.y
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||
|
||
parser for quakec
|
||
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||
Copyright (C) 2001 Bill Currie <bill@taniwha.org>
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|
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Author: Bill Currie <bill@taniwha.org>
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Date: 2001/06/12
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||
|
||
This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
|
||
as published by the Free Software Foundation; either version 2
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||
of the License, or (at your option) any later version.
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||
|
||
This program is distributed in the hope that it will be useful,
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||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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||
|
||
See the GNU General Public License for more details.
|
||
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||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to:
|
||
|
||
Free Software Foundation, Inc.
|
||
59 Temple Place - Suite 330
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||
Boston, MA 02111-1307, USA
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||
*/
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||
#ifdef HAVE_CONFIG_H
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||
# include "config.h"
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#endif
|
||
|
||
#ifdef HAVE_STRING_H
|
||
# include <string.h>
|
||
#endif
|
||
#ifdef HAVE_STRINGS_H
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||
# include <strings.h>
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||
#endif
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||
#include <stdlib.h>
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#include <QF/hash.h>
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#include <QF/sys.h>
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#include <QF/va.h>
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||
#include "class.h"
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||
#include "debug.h"
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||
#include "def.h"
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#include "diagnostic.h"
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||
#include "emit.h"
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||
#include "expr.h"
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||
#include "function.h"
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||
#include "method.h"
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#include "options.h"
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||
#include "qfcc.h"
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#include "reloc.h"
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#include "shared.h"
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#include "strpool.h"
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||
#include "struct.h"
|
||
#include "switch.h"
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#include "symtab.h"
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#include "type.h"
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||
#include "value.h"
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||
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||
#define YYDEBUG 1
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||
#define YYERROR_VERBOSE 1
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||
#undef YYERROR_VERBOSE
|
||
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||
extern char *qc_yytext;
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||
|
||
static void
|
||
yyerror (const char *s)
|
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{
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#ifdef YYERROR_VERBOSE
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error (0, "%s %s\n", qc_yytext, s);
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#else
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error (0, "%s before %s", s, qc_yytext);
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#endif
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}
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static void
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parse_error (void)
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{
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error (0, "parse error before %s", qc_yytext);
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}
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#define PARSE_ERROR do { parse_error (); YYERROR; } while (0)
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int yylex (void);
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%}
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%union {
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int op;
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int size;
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specifier_t spec;
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void *pointer; // for ensuring pointer values are null
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struct type_s *type;
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struct expr_s *expr;
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||
struct element_s *element;
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struct function_s *function;
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struct switch_block_s *switch_block;
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struct param_s *param;
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struct method_s *method;
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struct class_s *class;
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struct category_s *category;
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struct class_type_s *class_type;
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struct protocol_s *protocol;
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struct protocollist_s *protocol_list;
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struct keywordarg_s *keywordarg;
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struct methodlist_s *methodlist;
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struct symbol_s *symbol;
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struct symtab_s *symtab;
|
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}
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// these tokens are common between qc and qp
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%left LOW
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%nonassoc IFX
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%nonassoc ELSE
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%nonassoc BREAK_PRIMARY
|
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%nonassoc ';'
|
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%nonassoc CLASS_NOT_CATEGORY
|
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%nonassoc STORAGEX
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||
|
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%left COMMA
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%right <op> '=' ASX
|
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%right '?' ':'
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%left OR
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%left AND
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%left '|'
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%left '^'
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%left '&'
|
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%left EQ NE
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%left LE GE LT GT
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// end of tokens common between qc and qp
|
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|
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%left SHL SHR
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%left '+' '-'
|
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%left '*' '/' '%' MOD
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%right <op> SIZEOF UNARY INCOP
|
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%left HYPERUNARY
|
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%left '.' '(' '['
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|
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%token <symbol> CLASS_NAME NAME
|
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%token <expr> VALUE STRING
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|
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%token LOCAL RETURN WHILE DO IF ELSE FOR BREAK CONTINUE ELLIPSIS
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%token NIL IFBE IFB IFAE IFA GOTO SWITCH CASE DEFAULT ENUM
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%token ARGS TYPEDEF EXTERN STATIC SYSTEM NOSAVE OVERLOAD NOT
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%token <op> STRUCT
|
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%token <type> TYPE
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%token <symbol> OBJECT TYPE_NAME
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%token CLASS DEFS ENCODE END IMPLEMENTATION INTERFACE PRIVATE
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%token PROTECTED PROTOCOL PUBLIC SELECTOR REFERENCE SELF THIS
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|
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%type <spec> optional_specifiers specifiers local_specifiers
|
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%type <spec> storage_class save_storage set_spec_storage
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%type <spec> type_specifier type_specifier_or_storage_class
|
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%type <spec> type
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%type <param> function_params var_list param_declaration
|
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%type <param> qc_func_params qc_var_list qc_param_decl
|
||
%type <symbol> new_name
|
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%type <symbol> var_decl function_decl
|
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%type <symbol> abstract_decl abs_decl
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|
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%type <symbol> tag optional_tag
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%type <spec> struct_specifier struct_def struct_decl
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%type <spec> enum_specifier
|
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%type <symbol> optional_enum_list enum_list enumerator_list enumerator
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%type <symbol> enum_init
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%type <size> array_decl
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%type <spec> func_def_list comma
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%type <expr> const string
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%type <spec> ivar_decl decl decl_list
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%type <spec> ivars
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%type <param> param param_list
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%type <symbol> methoddef
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%type <expr> opt_initializer var_initializer local_def
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%type <expr> opt_init opt_expr comma_expr expr
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%type <expr> compound_init element_list
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%type <element> element
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%type <expr> optional_state_expr texpr vector_expr
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%type <expr> statement statements compound_statement
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%type <expr> else bool_label break_label continue_label
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%type <expr> unary_expr ident_expr cast_expr expr_list
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%type <expr> opt_arg_list arg_list arg_expr
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%type <expr> init_var_decl_list init_var_decl
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%type <switch_block> switch_block
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%type <symbol> identifier label
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%type <symbol> overloaded_identifier
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%type <expr> identifier_list
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%type <symbol> protocol_name_list selector reserved_word
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%type <param> optional_param_list unaryselector keyworddecl
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%type <param> keywordselector
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%type <method> methodproto methoddecl
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%type <expr> obj_expr obj_messageexpr obj_string receiver
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%type <protocol_list> protocolrefs protocol_list
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%type <keywordarg> messageargs keywordarg keywordarglist selectorarg
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%type <keywordarg> keywordnamelist keywordname
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%type <class> class_name new_class_name class_with_super
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%type <class> classdef new_class_with_super
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%type <category> category_name new_category_name
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%type <protocol> protocol_name
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%type <methodlist> methodprotolist methodprotolist2
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||
%type <symtab> ivar_decl_list
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%type <op> ci not
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%{
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static switch_block_t *switch_block;
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static expr_t *break_label;
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static expr_t *continue_label;
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static specifier_t
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make_spec (type_t *type, storage_class_t storage, int is_typedef,
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int is_overload)
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{
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specifier_t spec;
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memset (&spec, 0, sizeof (spec));
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spec.type = type;
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spec.storage = storage;
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spec.is_typedef = is_typedef;
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spec.is_overload = is_overload;
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if (spec.storage && spec.is_typedef)
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internal_error (0, "setting both storage and is_typedef");
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return spec;
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}
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static specifier_t
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spec_merge (specifier_t spec, specifier_t new)
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{
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if (new.type) {
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if (spec.type && !spec.multi_type) {
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error (0, "two or more data types in declaration specifiers");
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spec.multi_type = 1;
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}
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spec.type = new.type;
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}
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if (new.is_typedef || new.storage) {
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if ((spec.is_typedef || spec.storage) && !spec.multi_store) {
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error (0, "multiple storage classes in declaration specifiers");
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spec.multi_store = 1;
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}
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spec.storage = new.storage;
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spec.is_typedef = new.is_typedef;
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}
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spec.is_overload |= new.is_overload;
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spec.nosave |= new.nosave;
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return spec;
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}
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static specifier_t
|
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default_type (specifier_t spec, symbol_t *sym)
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{
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||
if (!spec.type) {
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spec.type = type_default;
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warning (0, "type defaults to '%s' in declaration of '%s'",
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type_default->name, sym->name);
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}
|
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return spec;
|
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}
|
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|
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static int
|
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is_anonymous_struct (specifier_t spec)
|
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{
|
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if (spec.sym) {
|
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return 0;
|
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}
|
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if (!is_struct (spec.type)) {
|
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return 0;
|
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}
|
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if (!spec.type->t.symtab || spec.type->t.symtab->parent) {
|
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return 0;
|
||
}
|
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// struct and union type names always begin with "tag ". Untagged s/u
|
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// are "tag .<filename>.<id>".
|
||
if (spec.type->name[4] != '.') {
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return 0;
|
||
}
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return 1;
|
||
}
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|
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static int
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is_null_spec (specifier_t spec)
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{
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static specifier_t null_spec;
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return memcmp (&spec, &null_spec, sizeof (spec)) == 0;
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}
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%}
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%expect 0
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%%
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||
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program
|
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: external_def_list
|
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{
|
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if (current_class) {
|
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warning (0, "‘@end’ missing in implementation context");
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class_finish (current_class);
|
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current_class = 0;
|
||
}
|
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}
|
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|
||
external_def_list
|
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: /* empty */
|
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{
|
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current_symtab = pr.symtab;
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}
|
||
| external_def_list external_def
|
||
| external_def_list obj_def
|
||
| error END
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{
|
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yyerrok;
|
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current_class = 0;
|
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current_symtab = pr.symtab;
|
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current_storage = sc_global;
|
||
}
|
||
| error ';'
|
||
{
|
||
yyerrok;
|
||
current_class = 0;
|
||
current_symtab = pr.symtab;
|
||
current_storage = sc_global;
|
||
}
|
||
| error '}'
|
||
{
|
||
yyerrok;
|
||
current_class = 0;
|
||
current_symtab = pr.symtab;
|
||
current_storage = sc_global;
|
||
}
|
||
;
|
||
|
||
external_def
|
||
: optional_specifiers external_decl_list ';' { }
|
||
| optional_specifiers ';'
|
||
{
|
||
if (!is_null_spec ($1)) {
|
||
if (!$1.type && !$1.sym) {
|
||
warning (0, "useless specifiers");
|
||
} else if ($1.type && !$1.sym) {
|
||
if (is_anonymous_struct ($1)){
|
||
warning (0, "unnamed struct/union that defines "
|
||
"no instances");
|
||
} else if (!is_enum ($1.type) && !is_struct ($1.type)) {
|
||
warning (0, "useless type name in empty declaration");
|
||
}
|
||
} else if (!$1.type && $1.sym) {
|
||
bug (0, "wha? %p %p", $1.type, $1.sym);
|
||
} else {
|
||
bug (0, "wha? %p %p", $1.type, $1.sym);
|
||
}
|
||
}
|
||
}
|
||
| optional_specifiers qc_func_params
|
||
{
|
||
type_t **type;
|
||
$<spec>$ = $1; // copy spec bits and storage
|
||
// .float () foo; is a field holding a function variable rather
|
||
// than a function that returns a float field.
|
||
for (type = &$<spec>$.type; *type && (*type)->type == ev_field;
|
||
type = &(*type)->t.fldptr.type)
|
||
;
|
||
*type = parse_params (*type, $2);
|
||
$<spec>$.type = find_type ($<spec>$.type);
|
||
if ($<spec>$.type->type != ev_field)
|
||
$<spec>$.params = $2;
|
||
}
|
||
function_def_list
|
||
{
|
||
(void) ($<spec>3);
|
||
}
|
||
| optional_specifiers function_decl function_body
|
||
| storage_class '{' save_storage
|
||
{
|
||
current_storage = $1.storage;
|
||
}
|
||
external_def_list '}' ';'
|
||
{
|
||
current_storage = $3.storage;
|
||
}
|
||
;
|
||
|
||
save_storage
|
||
: /* emtpy */
|
||
{
|
||
$$.storage = current_storage;
|
||
}
|
||
;
|
||
|
||
set_spec_storage
|
||
: /* emtpy */
|
||
{
|
||
$$ = $<spec>0;
|
||
$$.storage = current_storage;
|
||
}
|
||
;
|
||
|
||
function_body
|
||
: optional_state_expr
|
||
{
|
||
symbol_t *sym = $<symbol>0;
|
||
|
||
if (!$<spec>-1.type)
|
||
$<spec>-1.type = type_default;
|
||
sym->type = find_type (append_type (sym->type, $<spec>-1.type));
|
||
$<symbol>$ = function_symbol (sym, $<spec>-1.is_overload, 1);
|
||
}
|
||
save_storage
|
||
{
|
||
$<symtab>$ = current_symtab;
|
||
current_func = begin_function ($<symbol>2, 0, current_symtab, 0);
|
||
current_symtab = current_func->symtab;
|
||
current_storage = sc_local;
|
||
}
|
||
compound_statement
|
||
{
|
||
build_code_function ($<symbol>2, $1, $5);
|
||
current_symtab = $<symtab>4;
|
||
current_storage = $3.storage;
|
||
current_func = 0;
|
||
}
|
||
| '=' '#' expr ';'
|
||
{
|
||
symbol_t *sym = $<symbol>0;
|
||
|
||
if (!$<spec>-1.type)
|
||
$<spec>-1.type = type_default;
|
||
sym->type = find_type (append_type (sym->type, $<spec>-1.type));
|
||
sym = function_symbol (sym, $<spec>-1.is_overload, 1);
|
||
build_builtin_function (sym, $3, 0);
|
||
}
|
||
;
|
||
|
||
external_decl_list
|
||
: external_decl
|
||
| external_decl_list ',' { $<spec>$ = $<spec>0; }
|
||
external_decl { (void) ($<spec>3); }
|
||
;
|
||
|
||
external_decl
|
||
: var_decl
|
||
{
|
||
specifier_t spec = default_type ($<spec>0, $1);
|
||
$1->type = find_type (append_type ($1->type, spec.type));
|
||
if (spec.is_typedef) {
|
||
$1->sy_type = sy_type;
|
||
$1->type=find_type (alias_type ($1->type, $1->type, $1->name));
|
||
symtab_addsymbol (current_symtab, $1);
|
||
} else {
|
||
initialize_def ($1, 0, current_symtab->space, spec.storage);
|
||
if ($1->s.def)
|
||
$1->s.def->nosave |= spec.nosave;
|
||
}
|
||
}
|
||
| var_decl var_initializer
|
||
{
|
||
specifier_t spec = default_type ($<spec>0, $1);
|
||
|
||
$1->type = find_type (append_type ($1->type, spec.type));
|
||
if (spec.is_typedef) {
|
||
error (0, "typedef %s is initialized", $1->name);
|
||
$1->sy_type = sy_type;
|
||
$1->type=find_type (alias_type ($1->type, $1->type, $1->name));
|
||
symtab_addsymbol (current_symtab, $1);
|
||
} else {
|
||
initialize_def ($1, $2, current_symtab->space, spec.storage);
|
||
if ($1->s.def)
|
||
$1->s.def->nosave |= spec.nosave;
|
||
}
|
||
}
|
||
| function_decl
|
||
{
|
||
specifier_t spec = default_type ($<spec>0, $1);
|
||
$1->type = find_type (append_type ($1->type, spec.type));
|
||
if (spec.is_typedef) {
|
||
$1->sy_type = sy_type;
|
||
$1->type=find_type (alias_type ($1->type, $1->type, $1->name));
|
||
symtab_addsymbol (current_symtab, $1);
|
||
} else {
|
||
$1 = function_symbol ($1, spec.is_overload, 1);
|
||
}
|
||
}
|
||
;
|
||
|
||
storage_class
|
||
: EXTERN { $$ = make_spec (0, sc_extern, 0, 0); }
|
||
| STATIC { $$ = make_spec (0, sc_static, 0, 0); }
|
||
| SYSTEM { $$ = make_spec (0, sc_system, 0, 0); }
|
||
| TYPEDEF { $$ = make_spec (0, sc_global, 1, 0); }
|
||
| OVERLOAD { $$ = make_spec (0, current_storage, 0, 1); }
|
||
| NOSAVE
|
||
{
|
||
$$ = make_spec (0, current_storage, 0, 0);
|
||
$$.nosave = 1;
|
||
}
|
||
;
|
||
|
||
optional_specifiers
|
||
: specifiers
|
||
{
|
||
$$ = $1;
|
||
if (!$$.storage)
|
||
$$.storage = current_storage;
|
||
}
|
||
| /* empty */
|
||
{
|
||
$$ = make_spec (0, current_storage, 0, 0);
|
||
}
|
||
;
|
||
|
||
specifiers
|
||
: type_specifier_or_storage_class
|
||
| specifiers type_specifier_or_storage_class
|
||
{
|
||
$$ = spec_merge ($1, $2);
|
||
}
|
||
;
|
||
|
||
type
|
||
: type_specifier
|
||
| type type_specifier
|
||
{
|
||
// deal with eg "int id"
|
||
$1.sym = $2.sym;
|
||
|
||
if (!$1.sym) {
|
||
error (0, "two or more data types in declaration specifiers");
|
||
}
|
||
$$ = $1;
|
||
}
|
||
;
|
||
|
||
type_specifier_or_storage_class
|
||
: type_specifier
|
||
| storage_class
|
||
;
|
||
|
||
type_specifier
|
||
: TYPE
|
||
{
|
||
$$ = make_spec ($1, 0, 0, 0);
|
||
}
|
||
| enum_specifier
|
||
| struct_specifier
|
||
| TYPE_NAME
|
||
{
|
||
$$ = make_spec ($1->type, 0, 0, 0);
|
||
$$.sym = $1;
|
||
}
|
||
| OBJECT protocolrefs
|
||
{
|
||
if ($2) {
|
||
type_t type = *type_id.t.fldptr.type;
|
||
type.next = 0;
|
||
type.protos = $2;
|
||
$$ = make_spec (pointer_type (find_type (&type)), 0, 0, 0);
|
||
} else {
|
||
$$ = make_spec (&type_id, 0, 0, 0);
|
||
}
|
||
$$.sym = $1;
|
||
}
|
||
| CLASS_NAME protocolrefs
|
||
{
|
||
if ($2) {
|
||
type_t type = *$1->type;
|
||
type.next = 0;
|
||
type.protos = $2;
|
||
$$ = make_spec (find_type (&type), 0, 0, 0);
|
||
} else {
|
||
$$ = make_spec ($1->type, 0, 0, 0);
|
||
}
|
||
$$.sym = $1;
|
||
}
|
||
// NOTE: fields don't parse the way they should. This is not a problem
|
||
// for basic types, but functions need special treatment
|
||
| '.' type_specifier
|
||
{
|
||
// avoid find_type()
|
||
$$ = make_spec (field_type (0), 0, 0, 0);
|
||
$$.type = append_type ($$.type, $2.type);
|
||
}
|
||
;
|
||
|
||
optional_tag
|
||
: tag
|
||
| /* empty */ { $$ = 0; }
|
||
;
|
||
|
||
tag : NAME ;
|
||
|
||
enum_specifier
|
||
: ENUM tag optional_enum_list
|
||
{
|
||
$$ = make_spec ($3->type, 0, 0, 0);
|
||
if (!$3->table)
|
||
symtab_addsymbol (current_symtab, $3);
|
||
}
|
||
| ENUM enum_list
|
||
{
|
||
$$ = make_spec ($2->type, 0, 0, 0);
|
||
if (!$2->table)
|
||
symtab_addsymbol (current_symtab, $2);
|
||
}
|
||
;
|
||
|
||
optional_enum_list
|
||
: enum_list
|
||
| /* empty */ { $$ = find_enum ($<symbol>0); }
|
||
;
|
||
|
||
enum_list
|
||
: '{' enum_init enumerator_list optional_comma '}'
|
||
{
|
||
current_symtab = current_symtab->parent;
|
||
$$ = finish_enum ($3);
|
||
}
|
||
;
|
||
|
||
enum_init
|
||
: /* empty */
|
||
{
|
||
$$ = find_enum ($<symbol>-1);
|
||
start_enum ($$);
|
||
current_symtab = $$->type->t.symtab;
|
||
}
|
||
;
|
||
|
||
enumerator_list
|
||
: enumerator { $$ = $<symbol>0; }
|
||
| enumerator_list ',' { $<symbol>$ = $<symbol>0; }
|
||
enumerator
|
||
{
|
||
$$ = $<symbol>0;
|
||
(void) ($<symbol>3);
|
||
}
|
||
;
|
||
|
||
enumerator
|
||
: identifier { add_enum ($<symbol>0, $1, 0); }
|
||
| identifier '=' expr { add_enum ($<symbol>0, $1, $3); }
|
||
;
|
||
|
||
struct_specifier
|
||
: STRUCT optional_tag '{'
|
||
{
|
||
symbol_t *sym;
|
||
sym = find_struct ($1, $2, 0);
|
||
if (!sym->table) {
|
||
symtab_addsymbol (current_symtab, sym);
|
||
} else {
|
||
if (!sym->type) {
|
||
internal_error (0, "broken structure symbol?");
|
||
}
|
||
if (sym->type->meta == ty_enum
|
||
|| (sym->type->meta == ty_struct && sym->type->t.symtab)) {
|
||
error (0, "%s %s redefined",
|
||
$1 == 's' ? "struct" : "union", $2->name);
|
||
$1 = 0;
|
||
} else if (sym->type->meta != ty_struct) {
|
||
internal_error (0, "%s is not a struct or union",
|
||
$2->name);
|
||
}
|
||
}
|
||
current_symtab = new_symtab (current_symtab, stab_local);
|
||
}
|
||
struct_defs '}'
|
||
{
|
||
symbol_t *sym;
|
||
symtab_t *symtab = current_symtab;
|
||
current_symtab = symtab->parent;
|
||
|
||
if ($1) {
|
||
sym = build_struct ($1, $2, symtab, 0);
|
||
$$ = make_spec (sym->type, 0, 0, 0);
|
||
if (!sym->table)
|
||
symtab_addsymbol (current_symtab, sym);
|
||
}
|
||
}
|
||
| STRUCT tag
|
||
{
|
||
symbol_t *sym;
|
||
|
||
sym = find_struct ($1, $2, 0);
|
||
$$ = make_spec (sym->type, 0, 0, 0);
|
||
if (!sym->table)
|
||
symtab_addsymbol (current_symtab, sym);
|
||
}
|
||
;
|
||
|
||
struct_defs
|
||
: struct_def_list ';'
|
||
| DEFS '(' identifier ')'
|
||
{
|
||
$3 = check_undefined ($3);
|
||
if (!$3->type || !is_class ($3->type)) {
|
||
error (0, "`%s' is not a class", $3->name);
|
||
} else {
|
||
// replace the struct symbol table with one built from
|
||
// the class ivars and the current struct fields. ivars
|
||
// will replace any fields of the same name.
|
||
current_symtab = class_to_struct ($3->type->t.class,
|
||
current_symtab);
|
||
}
|
||
}
|
||
;
|
||
|
||
struct_def_list
|
||
: struct_def
|
||
| struct_def_list ';' struct_def
|
||
;
|
||
|
||
struct_def
|
||
: type struct_decl_list
|
||
| type
|
||
{
|
||
if ($1.sym && $1.sym->type != $1.type) {
|
||
// a type name (id, typedef, etc) was used as a field name.
|
||
// this is allowed in C
|
||
$1.sym = new_symbol ($1.sym->name);
|
||
$1.sym->type = $1.type;
|
||
$1.sym->sy_type = sy_var;
|
||
symtab_addsymbol (current_symtab, $1.sym);
|
||
if (!$1.sym->table) {
|
||
error (0, "duplicate field `%s'", $1.sym->name);
|
||
}
|
||
} else if (is_anonymous_struct ($1)) {
|
||
// anonymous struct/union
|
||
// type->name always begins with "tag "
|
||
$1.sym = new_symbol (va (".anonymous.%s", $1.type->name + 4));
|
||
$1.sym->type = $1.type;
|
||
$1.sym->sy_type = sy_var;
|
||
$1.sym->visibility = vis_anonymous;
|
||
symtab_addsymbol (current_symtab, $1.sym);
|
||
if (!$1.sym->table) {
|
||
error (0, "duplicate field `%s'", $1.sym->name);
|
||
}
|
||
} else {
|
||
// bare type
|
||
warning (0, "declaration does not declare anything");
|
||
}
|
||
$$ = $1;
|
||
}
|
||
;
|
||
|
||
struct_decl_list
|
||
: struct_decl_list ',' { $<spec>$ = $<spec>0; }
|
||
struct_decl { (void) ($<spec>3); }
|
||
| struct_decl
|
||
;
|
||
|
||
struct_decl
|
||
: function_decl
|
||
{
|
||
if (!$<spec>0.type)
|
||
$<spec>0.type = type_default;
|
||
$1->type = find_type (append_type ($1->type, $<spec>0.type));
|
||
$1->sy_type = sy_var;
|
||
$1->visibility = current_visibility;
|
||
symtab_addsymbol (current_symtab, $1);
|
||
if (!$1->table) {
|
||
error (0, "duplicate field `%s'", $1->name);
|
||
}
|
||
}
|
||
| var_decl
|
||
{
|
||
if (!$<spec>0.type)
|
||
$<spec>0.type = type_default;
|
||
$1->type = find_type (append_type ($1->type, $<spec>0.type));
|
||
$1->sy_type = sy_var;
|
||
$1->visibility = current_visibility;
|
||
symtab_addsymbol (current_symtab, $1);
|
||
if (!$1->table) {
|
||
error (0, "duplicate field `%s'", $1->name);
|
||
}
|
||
}
|
||
| var_decl ':' expr %prec COMMA {}
|
||
| ':' expr %prec COMMA {}
|
||
;
|
||
|
||
new_name
|
||
: NAME %prec COMMA
|
||
{
|
||
$$ = $1;
|
||
// due to the way declarations work, we need a new symbol at all
|
||
// times. redelcarations will be checked later
|
||
if ($$->table)
|
||
$$ = new_symbol ($1->name);
|
||
}
|
||
;
|
||
|
||
var_decl
|
||
: new_name
|
||
{
|
||
$$ = $1;
|
||
$$->type = 0;
|
||
}
|
||
| var_decl function_params
|
||
{
|
||
$$->type = append_type ($$->type, parse_params (0, $2));
|
||
}
|
||
| var_decl array_decl
|
||
{
|
||
$$->type = append_type ($$->type, array_type (0, $2));
|
||
}
|
||
| '*' var_decl %prec UNARY
|
||
{
|
||
$$ = $2;
|
||
$$->type = append_type ($$->type, pointer_type (0));
|
||
}
|
||
| '(' var_decl ')' { $$ = $2; }
|
||
;
|
||
|
||
function_decl
|
||
: '*' function_decl
|
||
{
|
||
$$ = $2;
|
||
$$->type = append_type ($$->type, pointer_type (0));
|
||
}
|
||
| function_decl array_decl
|
||
{
|
||
$$ = $1;
|
||
$$->type = append_type ($$->type, array_type (0, $2));
|
||
}
|
||
| '(' function_decl ')' { $$ = $2; }
|
||
| function_decl function_params
|
||
{
|
||
$$ = $1;
|
||
$$->params = $2;
|
||
$$->type = append_type ($$->type, parse_params (0, $2));
|
||
}
|
||
| NAME function_params
|
||
{
|
||
$$ = $1;
|
||
$$->params = $2;
|
||
$$->type = parse_params (0, $2);
|
||
}
|
||
;
|
||
|
||
function_params
|
||
: '(' ')' { $$ = 0; }
|
||
| '(' ps var_list ')' { $$ = check_params ($3); }
|
||
;
|
||
|
||
qc_func_params
|
||
: '(' ')' { $$ = 0; }
|
||
| '(' ps qc_var_list ')' { $$ = check_params ($3); }
|
||
| '(' ps TYPE ')'
|
||
{
|
||
if (!is_void ($3))
|
||
PARSE_ERROR;
|
||
$$ = 0;
|
||
}
|
||
;
|
||
|
||
ps : ;
|
||
|
||
var_list
|
||
: param_declaration
|
||
| var_list ',' param_declaration
|
||
{
|
||
param_t *p;
|
||
|
||
for (p = $1; p->next; p = p->next)
|
||
;
|
||
p->next = $3;
|
||
$$ = $1;
|
||
}
|
||
;
|
||
|
||
qc_var_list
|
||
: qc_param_decl
|
||
| qc_var_list ',' qc_param_decl
|
||
{
|
||
param_t *p;
|
||
|
||
for (p = $1; p->next; p = p->next)
|
||
;
|
||
p->next = $3;
|
||
$$ = $1;
|
||
}
|
||
;
|
||
|
||
param_declaration
|
||
: type var_decl
|
||
{
|
||
if (!$1.type)
|
||
$1.type = type_default;
|
||
$2->type = find_type (append_type ($2->type, $1.type));
|
||
$$ = new_param (0, $2->type, $2->name);
|
||
}
|
||
| abstract_decl { $$ = new_param (0, $1->type, 0); }
|
||
| ELLIPSIS { $$ = new_param (0, 0, 0); }
|
||
;
|
||
|
||
abstract_decl
|
||
: type abs_decl
|
||
{
|
||
$$ = $2;
|
||
if (!$1.type)
|
||
$1.type = type_default;
|
||
$$->type = find_type (append_type ($$->type, $1.type));
|
||
}
|
||
| error { $$ = new_symbol (""); }
|
||
;
|
||
|
||
qc_param_decl
|
||
: type new_name
|
||
{
|
||
$2->type = find_type ($1.type);
|
||
$$ = new_param (0, $2->type, $2->name);
|
||
}
|
||
| type qc_func_params new_name
|
||
{
|
||
type_t **type;
|
||
// .float () foo; is a field holding a function variable rather
|
||
// than a function that returns a float field.
|
||
for (type = &$1.type; *type && (*type)->type == ev_field;
|
||
type = &(*type)->t.fldptr.type)
|
||
;
|
||
*type = parse_params (*type, $2);
|
||
$3->type = find_type ($1.type);
|
||
if ($3->type->type != ev_field)
|
||
$3->params = $2;
|
||
$$ = new_param (0, $3->type, $3->name);
|
||
}
|
||
| ELLIPSIS { $$ = new_param (0, 0, 0); }
|
||
;
|
||
|
||
abs_decl
|
||
: /* empty */ { $$ = new_symbol (""); }
|
||
| '(' abs_decl ')' function_params
|
||
{
|
||
$$ = $2;
|
||
$$->type = append_type ($$->type, parse_params (0, $4));
|
||
}
|
||
| '*' abs_decl
|
||
{
|
||
$$ = $2;
|
||
$$->type = append_type ($$->type, pointer_type (0));
|
||
}
|
||
| abs_decl array_decl
|
||
{
|
||
$$ = $1;
|
||
$$->type = append_type ($$->type, array_type (0, $2));
|
||
}
|
||
| '(' abs_decl ')'
|
||
{
|
||
$$ = $2;
|
||
}
|
||
;
|
||
|
||
array_decl
|
||
: '[' expr ']'
|
||
{
|
||
if (!is_integer_val ($2) || expr_integer ($2) < 1) {
|
||
error (0, "invalid array size");
|
||
$$ = 0;
|
||
} else {
|
||
$$ = expr_integer ($2);
|
||
}
|
||
}
|
||
| '[' ']' { $$ = 0; }
|
||
;
|
||
|
||
local_specifiers
|
||
: LOCAL specifiers { $$ = $2; }
|
||
| specifiers { $$ = $1; }
|
||
;
|
||
|
||
param_list
|
||
: param { $$ = $1; }
|
||
| param_list ',' { $<param>$ = $<param>1; } param
|
||
{
|
||
$$ = $4;
|
||
(void) ($<symbol>3);
|
||
}
|
||
;
|
||
|
||
param
|
||
: type identifier
|
||
{
|
||
$2 = check_redefined ($2);
|
||
$$ = param_append_identifiers ($<param>0, $2, $1.type);
|
||
}
|
||
;
|
||
|
||
local_decl_list
|
||
: decl_list
|
||
| qc_func_params
|
||
{
|
||
type_t **type;
|
||
specifier_t spec = $<spec>0; // copy spec bits and storage
|
||
// .float () foo; is a field holding a function variable rather
|
||
// than a function that returns a float field.
|
||
for (type = &spec.type; *type && (*type)->type == ev_field;
|
||
type = &(*type)->t.fldptr.type)
|
||
;
|
||
*type = parse_params (*type, $1);
|
||
spec.type = find_type (spec.type);
|
||
$<spec>$ = spec;
|
||
}
|
||
func_def_list
|
||
{
|
||
(void) ($<spec>2);
|
||
}
|
||
;
|
||
|
||
decl_list
|
||
: decl_list ',' { $<spec>$ = $<spec>0; } decl { (void) ($<spec>3); }
|
||
| decl
|
||
;
|
||
|
||
decl
|
||
: function_decl {}
|
||
| var_decl opt_initializer
|
||
{
|
||
specifier_t spec = default_type ($<spec>0, $1);
|
||
storage_class_t sc = spec.storage;
|
||
struct defspace_s *space = current_symtab->space;
|
||
|
||
if (sc == sc_static)
|
||
space = pr.near_data;
|
||
$1->type = find_type (append_type ($1->type, spec.type));
|
||
initialize_def ($1, $2, space, sc);
|
||
if ($1->s.def)
|
||
$1->s.def->nosave |= spec.nosave;
|
||
}
|
||
;
|
||
|
||
function_def_list
|
||
: func_def_list comma func_def_list_term
|
||
| func_def_list_term
|
||
;
|
||
|
||
func_def_list
|
||
: func_def_list comma func_def { $$ = $2; }
|
||
| func_def { $$ = $<spec>0; }
|
||
;
|
||
|
||
/* This rule is used only to get an action before both func_def and
|
||
func_def_list_term so that the function spec can be inherited.
|
||
*/
|
||
comma: ',' { $$ = $<spec>0; }
|
||
|
||
func_def_list_term
|
||
: non_code_funcion ';'
|
||
| code_function ';'
|
||
| code_function %prec IFX
|
||
;
|
||
|
||
func_def
|
||
: non_code_funcion
|
||
| code_function
|
||
;
|
||
|
||
code_function
|
||
: overloaded_identifier code_func
|
||
;
|
||
|
||
non_code_funcion
|
||
: overloaded_identifier non_code_func
|
||
;
|
||
|
||
overloaded_identifier
|
||
: identifier
|
||
{
|
||
$$ = $1;
|
||
$$->type = $<spec>0.type;
|
||
if (!local_expr && $$->type->type != ev_field) {
|
||
$$ = function_symbol ($$, $<spec>0.is_overload, 1);
|
||
$$->params = $<spec>0.params;
|
||
}
|
||
}
|
||
;
|
||
|
||
non_code_func
|
||
: '=' '#' expr
|
||
{
|
||
if ($<spec>-1.storage == sc_extern) {
|
||
error (0, "initializing external variable");
|
||
}
|
||
build_builtin_function ($<symbol>0, $3, 0);
|
||
}
|
||
| '=' expr
|
||
{
|
||
if (local_expr) {
|
||
symbol_t *sym = $<symbol>0;
|
||
specifier_t spec = $<spec>-1;
|
||
initialize_def (sym, $2, current_symtab->space, spec.storage);
|
||
if (sym->s.def)
|
||
sym->s.def->nosave |= spec.nosave;
|
||
} else {
|
||
if (is_integer_val ($2) || is_float_val ($2)) {
|
||
error (0, "invalid function initializer."
|
||
" did you forget #?");
|
||
} else {
|
||
error (0, "cannot create global function variables");
|
||
}
|
||
}
|
||
}
|
||
| /* emtpy */
|
||
{
|
||
symbol_t *sym = $<symbol>0;
|
||
specifier_t spec = $<spec>-1;
|
||
if (!local_expr && sym->type->type != ev_field) {
|
||
// things might be a confused mess from earlier errors
|
||
if (sym->sy_type == sy_func)
|
||
make_function (sym, 0, sym->table->space, spec.storage);
|
||
} else {
|
||
initialize_def (sym, 0, current_symtab->space, spec.storage);
|
||
if (sym->s.def)
|
||
sym->s.def->nosave |= spec.nosave;
|
||
}
|
||
}
|
||
;
|
||
|
||
code_func
|
||
: '=' optional_state_expr
|
||
save_storage
|
||
{
|
||
$<symtab>$ = current_symtab;
|
||
current_func = begin_function ($<symbol>0, 0, current_symtab, 0);
|
||
current_symtab = current_func->symtab;
|
||
current_storage = sc_local;
|
||
}
|
||
compound_statement
|
||
{
|
||
build_code_function ($<symbol>0, $2, $5);
|
||
current_symtab = $<symtab>4;
|
||
current_storage = $3.storage;
|
||
current_func = 0;
|
||
}
|
||
;
|
||
|
||
opt_initializer
|
||
: /*empty*/ { $$ = 0; }
|
||
| var_initializer { $$ = $1; }
|
||
;
|
||
|
||
var_initializer
|
||
: '=' expr { $$ = $2; }
|
||
| '=' compound_init
|
||
{
|
||
if (!$2 && is_scalar ($<spec>-1.type)) {
|
||
error (0, "empty scalar initializer");
|
||
}
|
||
$$ = $2 ? $2 : new_nil_expr ();
|
||
}
|
||
;
|
||
|
||
compound_init
|
||
: '{' element_list optional_comma '}' { $$ = $2; }
|
||
| '{' '}' { $$ = 0; }
|
||
;
|
||
|
||
optional_state_expr
|
||
: /* emtpy */ { $$ = 0; }
|
||
| vector_expr { $$ = build_state_expr ($1); }
|
||
;
|
||
|
||
element_list
|
||
: element
|
||
{
|
||
$$ = new_compound_init ();
|
||
append_element ($$, $1);
|
||
}
|
||
| element_list ',' element
|
||
{
|
||
append_element ($$, $3);
|
||
}
|
||
;
|
||
|
||
element
|
||
: compound_init { $$ = new_element ($1, 0); }
|
||
| expr { $$ = new_element ($1, 0); }
|
||
;
|
||
|
||
optional_comma
|
||
: /* empty */
|
||
| ','
|
||
;
|
||
|
||
push_scope
|
||
: /* empty */
|
||
{
|
||
if (!options.traditional) {
|
||
current_symtab = new_symtab (current_symtab, stab_local);
|
||
current_symtab->space = current_symtab->parent->space;
|
||
}
|
||
}
|
||
;
|
||
|
||
pop_scope
|
||
: /* empty */
|
||
{
|
||
if (!options.traditional)
|
||
current_symtab = current_symtab->parent;
|
||
}
|
||
;
|
||
|
||
compound_statement
|
||
: '{' push_scope statements '}' pop_scope { $$ = $3; }
|
||
;
|
||
|
||
statements
|
||
: /*empty*/
|
||
{
|
||
$$ = new_block_expr ();
|
||
}
|
||
| statements statement
|
||
{
|
||
$$ = append_expr ($1, $2);
|
||
}
|
||
;
|
||
|
||
local_def
|
||
: local_specifiers
|
||
{
|
||
if (!$1.storage)
|
||
$1.storage = sc_local;
|
||
$<spec>$ = $1;
|
||
local_expr = new_block_expr ();
|
||
}
|
||
local_decl_list ';'
|
||
{
|
||
$$ = local_expr;
|
||
local_expr = 0;
|
||
(void) ($<spec>2);
|
||
}
|
||
| specifiers ';'
|
||
{
|
||
if (!is_null_spec ($1)) {
|
||
if (!$1.type && !$1.sym) {
|
||
warning (0, "useless specifiers");
|
||
} else if ($1.type && !$1.sym) {
|
||
if (is_anonymous_struct ($1)){
|
||
warning (0, "unnamed struct/union that defines "
|
||
"no instances");
|
||
} else if (!is_enum ($1.type) && !is_struct ($1.type)) {
|
||
warning (0, "useless type name in empty declaration");
|
||
}
|
||
} else if (!$1.type && $1.sym) {
|
||
bug (0, "wha? %p %p", $1.type, $1.sym);
|
||
} else {
|
||
bug (0, "wha? %p %p", $1.type, $1.sym);
|
||
}
|
||
}
|
||
$$ = 0;
|
||
}
|
||
;
|
||
|
||
statement
|
||
: ';' { $$ = 0; }
|
||
| error ';' { $$ = 0; yyerrok; }
|
||
| compound_statement { $$ = $1; }
|
||
| local_def { $$ = $1; }
|
||
| RETURN opt_expr ';' { $$ = return_expr (current_func, $2); }
|
||
| RETURN compound_init ';' { $$ = return_expr (current_func, $2); }
|
||
| BREAK ';'
|
||
{
|
||
$$ = 0;
|
||
if (break_label)
|
||
$$ = goto_expr (break_label);
|
||
else
|
||
error (0, "break outside of loop or switch");
|
||
}
|
||
| CONTINUE ';'
|
||
{
|
||
$$ = 0;
|
||
if (continue_label)
|
||
$$ = goto_expr (continue_label);
|
||
else
|
||
error (0, "continue outside of loop");
|
||
}
|
||
| label
|
||
{
|
||
$$ = named_label_expr ($1);
|
||
}
|
||
| CASE expr ':'
|
||
{
|
||
$$ = case_label_expr (switch_block, $2);
|
||
}
|
||
| DEFAULT ':'
|
||
{
|
||
$$ = case_label_expr (switch_block, 0);
|
||
}
|
||
| SWITCH break_label '(' expr switch_block ')' compound_statement
|
||
{
|
||
$$ = switch_expr (switch_block, break_label, $7);
|
||
switch_block = $5;
|
||
break_label = $2;
|
||
}
|
||
| GOTO NAME
|
||
{
|
||
expr_t *label = named_label_expr ($2);
|
||
$$ = goto_expr (label);
|
||
}
|
||
| IF not '(' texpr ')' statement %prec IFX
|
||
{
|
||
$$ = build_if_statement ($2, $4, $6, 0, 0);
|
||
}
|
||
| IF not '(' texpr ')' statement else statement
|
||
{
|
||
$$ = build_if_statement ($2, $4, $6, $7, $8);
|
||
}
|
||
| FOR push_scope break_label continue_label
|
||
'(' opt_init ';' opt_expr ';' opt_expr ')' statement pop_scope
|
||
{
|
||
if ($6) {
|
||
$6 = build_block_expr ($6);
|
||
}
|
||
$$ = build_for_statement ($6, $8, $10, $12,
|
||
break_label, continue_label);
|
||
break_label = $3;
|
||
continue_label = $4;
|
||
}
|
||
| WHILE break_label continue_label not '(' texpr ')' statement
|
||
{
|
||
$$ = build_while_statement ($4, $6, $8, break_label,
|
||
continue_label);
|
||
break_label = $2;
|
||
continue_label = $3;
|
||
}
|
||
| DO break_label continue_label statement WHILE not '(' texpr ')' ';'
|
||
{
|
||
$$ = build_do_while_statement ($4, $6, $8,
|
||
break_label, continue_label);
|
||
break_label = $2;
|
||
continue_label = $3;
|
||
}
|
||
| comma_expr ';'
|
||
{
|
||
$$ = $1;
|
||
}
|
||
;
|
||
|
||
not
|
||
: NOT { $$ = 1; }
|
||
| /* empty */ { $$ = 0; }
|
||
;
|
||
|
||
else
|
||
: ELSE
|
||
{
|
||
// this is only to get the the file and line number info
|
||
$$ = new_nil_expr ();
|
||
}
|
||
;
|
||
|
||
label
|
||
: NAME ':'
|
||
;
|
||
|
||
bool_label
|
||
: /* empty */
|
||
{
|
||
$$ = new_label_expr ();
|
||
}
|
||
;
|
||
|
||
break_label
|
||
: /* empty */
|
||
{
|
||
$$ = break_label;
|
||
break_label = new_label_expr ();
|
||
}
|
||
;
|
||
|
||
continue_label
|
||
: /* empty */
|
||
{
|
||
$$ = continue_label;
|
||
continue_label = new_label_expr ();
|
||
}
|
||
;
|
||
|
||
switch_block
|
||
: /* empty */
|
||
{
|
||
$$ = switch_block;
|
||
switch_block = new_switch_block ();
|
||
switch_block->test = $<expr>0;
|
||
}
|
||
;
|
||
|
||
opt_init
|
||
: comma_expr
|
||
| type set_spec_storage init_var_decl_list { $$ = $3; }
|
||
| /* empty */
|
||
{
|
||
$$ = 0;
|
||
}
|
||
;
|
||
|
||
init_var_decl_list
|
||
: init_var_decl
|
||
{
|
||
$$ = $1;
|
||
}
|
||
| init_var_decl_list ',' { $<spec>$ = $<spec>0; } init_var_decl
|
||
{
|
||
$4->next = $1;
|
||
$$ = $4;
|
||
}
|
||
;
|
||
|
||
init_var_decl
|
||
: var_decl opt_initializer
|
||
{
|
||
specifier_t spec = $<spec>0;
|
||
$1->type = find_type (append_type ($1->type, spec.type));
|
||
$1->sy_type = sy_var;
|
||
initialize_def ($1, 0, current_symtab->space, spec.storage);
|
||
$$ = assign_expr (new_symbol_expr ($1), $2);
|
||
}
|
||
;
|
||
|
||
opt_expr
|
||
: comma_expr
|
||
| /* empty */
|
||
{
|
||
$$ = 0;
|
||
}
|
||
;
|
||
|
||
unary_expr
|
||
: NAME { $$ = new_symbol_expr ($1); }
|
||
| ARGS { $$ = new_name_expr (".args"); }
|
||
| SELF { $$ = new_self_expr (); }
|
||
| THIS { $$ = new_this_expr (); }
|
||
| const { $$ = $1; }
|
||
| '(' expr ')' { $$ = $2; $$->paren = 1; }
|
||
| unary_expr '(' opt_arg_list ')' { $$ = function_expr ($1, $3); }
|
||
| unary_expr '[' expr ']' { $$ = array_expr ($1, $3); }
|
||
| unary_expr '.' ident_expr { $$ = field_expr ($1, $3); }
|
||
| unary_expr '.' unary_expr { $$ = field_expr ($1, $3); }
|
||
| INCOP unary_expr { $$ = incop_expr ($1, $2, 0); }
|
||
| unary_expr INCOP { $$ = incop_expr ($2, $1, 1); }
|
||
| '+' cast_expr %prec UNARY { $$ = $2; }
|
||
| '-' cast_expr %prec UNARY { $$ = unary_expr ('-', $2); }
|
||
| '!' cast_expr %prec UNARY { $$ = unary_expr ('!', $2); }
|
||
| '~' cast_expr %prec UNARY { $$ = unary_expr ('~', $2); }
|
||
| '&' cast_expr %prec UNARY { $$ = address_expr ($2, 0, 0); }
|
||
| '*' cast_expr %prec UNARY { $$ = pointer_expr ($2); }
|
||
| SIZEOF unary_expr %prec UNARY { $$ = sizeof_expr ($2, 0); }
|
||
| SIZEOF '(' abstract_decl ')' %prec HYPERUNARY
|
||
{
|
||
$$ = sizeof_expr (0, $3->type);
|
||
}
|
||
| vector_expr { $$ = new_vector_list ($1); }
|
||
| obj_expr { $$ = $1; }
|
||
;
|
||
|
||
ident_expr
|
||
: OBJECT { $$ = new_symbol_expr ($1); }
|
||
| CLASS_NAME { $$ = new_symbol_expr ($1); }
|
||
| TYPE_NAME { $$ = new_symbol_expr ($1); }
|
||
;
|
||
|
||
vector_expr
|
||
: '[' expr ',' expr_list ']'
|
||
{
|
||
expr_t *t = $4;
|
||
while (t->next)
|
||
t = t->next;
|
||
t->next = $2;
|
||
$$ = $4;
|
||
}
|
||
;
|
||
|
||
cast_expr
|
||
: '(' abstract_decl ')' cast_expr
|
||
{
|
||
$$ = cast_expr ($2->type, $4);
|
||
}
|
||
| unary_expr %prec LOW
|
||
;
|
||
|
||
expr
|
||
: cast_expr
|
||
| expr '=' expr { $$ = assign_expr ($1, $3); }
|
||
| expr '=' compound_init { $$ = assign_expr ($1, $3); }
|
||
| expr ASX expr { $$ = asx_expr ($2, $1, $3); }
|
||
| expr '?' expr ':' expr { $$ = conditional_expr ($1, $3, $5); }
|
||
| expr AND bool_label expr { $$ = bool_expr (AND, $3, $1, $4); }
|
||
| expr OR bool_label expr { $$ = bool_expr (OR, $3, $1, $4); }
|
||
| expr EQ expr { $$ = binary_expr (EQ, $1, $3); }
|
||
| expr NE expr { $$ = binary_expr (NE, $1, $3); }
|
||
| expr LE expr { $$ = binary_expr (LE, $1, $3); }
|
||
| expr GE expr { $$ = binary_expr (GE, $1, $3); }
|
||
| expr LT expr { $$ = binary_expr (LT, $1, $3); }
|
||
| expr GT expr { $$ = binary_expr (GT, $1, $3); }
|
||
| expr SHL expr { $$ = binary_expr (SHL, $1, $3); }
|
||
| expr SHR expr { $$ = binary_expr (SHR, $1, $3); }
|
||
| expr '+' expr { $$ = binary_expr ('+', $1, $3); }
|
||
| expr '-' expr { $$ = binary_expr ('-', $1, $3); }
|
||
| expr '*' expr { $$ = binary_expr ('*', $1, $3); }
|
||
| expr '/' expr { $$ = binary_expr ('/', $1, $3); }
|
||
| expr '&' expr { $$ = binary_expr ('&', $1, $3); }
|
||
| expr '|' expr { $$ = binary_expr ('|', $1, $3); }
|
||
| expr '^' expr { $$ = binary_expr ('^', $1, $3); }
|
||
| expr '%' expr { $$ = binary_expr ('%', $1, $3); }
|
||
| expr MOD expr { $$ = binary_expr (MOD, $1, $3); }
|
||
;
|
||
|
||
texpr
|
||
: expr { $$ = convert_bool ($1, 1); }
|
||
;
|
||
|
||
comma_expr
|
||
: expr_list
|
||
{
|
||
if ($1->next) {
|
||
expr_t *res = $1;
|
||
$1 = build_block_expr ($1);
|
||
$1->e.block.result = res;
|
||
}
|
||
$$ = $1;
|
||
}
|
||
;
|
||
|
||
expr_list
|
||
: expr
|
||
| expr_list ',' expr
|
||
{
|
||
$3->next = $1;
|
||
$$ = $3;
|
||
}
|
||
;
|
||
|
||
opt_arg_list
|
||
: /* emtpy */ { $$ = 0; }
|
||
| arg_list { $$ = $1; }
|
||
;
|
||
|
||
arg_list
|
||
: arg_expr
|
||
| arg_list ',' arg_expr
|
||
{
|
||
$3->next = $1;
|
||
$$ = $3;
|
||
}
|
||
;
|
||
|
||
arg_expr
|
||
: expr
|
||
| compound_init
|
||
;
|
||
|
||
const
|
||
: VALUE
|
||
| NIL { $$ = new_nil_expr (); }
|
||
| string
|
||
;
|
||
|
||
string
|
||
: STRING
|
||
| string STRING { $$ = binary_expr ('+', $1, $2); }
|
||
;
|
||
|
||
identifier
|
||
: NAME
|
||
| OBJECT
|
||
| CLASS_NAME
|
||
| TYPE_NAME
|
||
;
|
||
|
||
// Objective-QC stuff
|
||
|
||
obj_def
|
||
: classdef { }
|
||
| classdecl
|
||
| protocoldecl
|
||
| protocoldef
|
||
| { if (!current_class) PARSE_ERROR; } methoddef
|
||
| END
|
||
{
|
||
if (!current_class)
|
||
PARSE_ERROR;
|
||
else
|
||
class_finish (current_class);
|
||
current_class = 0;
|
||
}
|
||
;
|
||
|
||
identifier_list
|
||
: identifier
|
||
{
|
||
$$ = append_expr (new_block_expr (), new_symbol_expr ($1));
|
||
}
|
||
| identifier_list ',' identifier
|
||
{
|
||
$$ = append_expr ($1, new_symbol_expr ($3));
|
||
}
|
||
;
|
||
|
||
classdecl
|
||
: CLASS identifier_list ';'
|
||
{
|
||
expr_t *e;
|
||
for (e = $2->e.block.head; e; e = e->next) {
|
||
get_class (e->e.symbol, 1);
|
||
if (!e->e.symbol->table)
|
||
symtab_addsymbol (current_symtab, e->e.symbol);
|
||
}
|
||
}
|
||
;
|
||
|
||
class_name
|
||
: identifier %prec CLASS_NOT_CATEGORY
|
||
{
|
||
if (!$1->type) {
|
||
$$ = get_class ($1, 1);
|
||
if (!$1->table) {
|
||
symtab_addsymbol (current_symtab, $1);
|
||
}
|
||
} else if (!is_class ($1->type)) {
|
||
error (0, "`%s' is not a class", $1->name);
|
||
$$ = get_class (0, 1);
|
||
} else {
|
||
$$ = $1->type->t.class;
|
||
}
|
||
}
|
||
;
|
||
|
||
new_class_name
|
||
: identifier
|
||
{
|
||
if (current_class) {
|
||
warning (0, "‘@end’ missing in implementation context");
|
||
class_finish (current_class);
|
||
current_class = 0;
|
||
}
|
||
$$ = get_class ($1, 0);
|
||
if (!$$) {
|
||
$1 = check_redefined ($1);
|
||
$$ = get_class ($1, 1);
|
||
}
|
||
$$->interface_declared = 1;
|
||
current_class = &$$->class_type;
|
||
if (!$1->table)
|
||
symtab_addsymbol (current_symtab, $1);
|
||
}
|
||
;
|
||
|
||
class_with_super
|
||
: class_name ':' class_name
|
||
{
|
||
if ($1->super_class != $3)
|
||
error (0, "%s is not a super class of %s", $3->name, $1->name);
|
||
$$ = $1;
|
||
}
|
||
;
|
||
|
||
new_class_with_super
|
||
: new_class_name ':' class_name
|
||
{
|
||
if (!$3->interface_declared) {
|
||
$3->interface_declared = 1;
|
||
error (0, "cannot find interface declaration for `%s', "
|
||
"superclass of `%s'", $3->name, $1->name);
|
||
}
|
||
$1->interface_declared = 1;
|
||
$1->super_class = $3;
|
||
$$ = $1;
|
||
}
|
||
;
|
||
|
||
category_name
|
||
: identifier '(' identifier ')'
|
||
{
|
||
$$ = get_category ($1, $3->name, 0);
|
||
if (!$$) {
|
||
error (0, "undefined category `%s (%s)'", $1->name, $3->name);
|
||
$$ = get_category (0, 0, 1);
|
||
}
|
||
}
|
||
;
|
||
|
||
new_category_name
|
||
: identifier '(' identifier ')'
|
||
{
|
||
if (current_class) {
|
||
warning (0, "‘@end’ missing in implementation context");
|
||
class_finish (current_class);
|
||
current_class = 0;
|
||
}
|
||
$$ = get_category ($1, $3->name, 1);
|
||
if ($$->defined) {
|
||
error (0, "redefinition of category `%s (%s)'",
|
||
$1->name, $3->name);
|
||
$$ = get_category (0, 0, 1);
|
||
}
|
||
current_class = &$$->class_type;
|
||
}
|
||
;
|
||
|
||
class_reference
|
||
: identifier
|
||
{
|
||
emit_class_ref ($1->name);
|
||
}
|
||
;
|
||
|
||
category_reference
|
||
: identifier '(' identifier ')'
|
||
{
|
||
emit_category_ref ($1->name, $3->name);
|
||
}
|
||
;
|
||
|
||
protocol_name
|
||
: identifier
|
||
{
|
||
$$ = get_protocol ($1->name, 0);
|
||
if ($$ && $$->methods) {
|
||
error (0, "redefinition of protocol %s", $1->name);
|
||
$$ = get_protocol (0, 1);
|
||
}
|
||
if (!$$) {
|
||
$$ = get_protocol ($1->name, 1);
|
||
}
|
||
$$->methods = new_methodlist ();
|
||
current_class = &$$->class_type;
|
||
}
|
||
;
|
||
|
||
classdef
|
||
: INTERFACE new_class_name
|
||
protocolrefs { class_add_protocols ($2, $3); }
|
||
'{' { $<class>$ = $2; }
|
||
ivar_decl_list '}'
|
||
{
|
||
class_add_ivars ($2, $7);
|
||
$<class>$ = $2;
|
||
}
|
||
methodprotolist { class_add_methods ($2, $10); }
|
||
END
|
||
{
|
||
current_class = 0;
|
||
(void) ($<class>6);
|
||
(void) ($<class>9);
|
||
}
|
||
| INTERFACE new_class_name
|
||
protocolrefs { class_add_protocols ($2, $3); }
|
||
{
|
||
class_add_ivars ($2, class_new_ivars ($2));
|
||
$<class>$ = $2;
|
||
}
|
||
methodprotolist { class_add_methods ($2, $6); }
|
||
END
|
||
{
|
||
current_class = 0;
|
||
(void) ($<class>5);
|
||
}
|
||
| INTERFACE new_class_with_super
|
||
protocolrefs { class_add_protocols ($2, $3);}
|
||
'{' { $<class>$ = $2; }
|
||
ivar_decl_list '}'
|
||
{
|
||
class_add_ivars ($2, $7);
|
||
$<class>$ = $2;
|
||
}
|
||
methodprotolist { class_add_methods ($2, $10); }
|
||
END
|
||
{
|
||
current_class = 0;
|
||
(void) ($<class>6);
|
||
(void) ($<class>9);
|
||
}
|
||
| INTERFACE new_class_with_super
|
||
protocolrefs { class_add_protocols ($2, $3); }
|
||
{
|
||
class_add_ivars ($2, class_new_ivars ($2));
|
||
$<class>$ = $2;
|
||
}
|
||
methodprotolist { class_add_methods ($2, $6); }
|
||
END
|
||
{
|
||
current_class = 0;
|
||
(void) ($<class>5);
|
||
}
|
||
| INTERFACE new_category_name
|
||
protocolrefs
|
||
{
|
||
category_add_protocols ($2, $3);
|
||
$<class>$ = $2->class;
|
||
}
|
||
methodprotolist { category_add_methods ($2, $5); }
|
||
END
|
||
{
|
||
current_class = 0;
|
||
(void) ($<class>4);
|
||
}
|
||
| IMPLEMENTATION class_name { class_begin (&$2->class_type); }
|
||
'{' { $<class>$ = $2; }
|
||
ivar_decl_list '}'
|
||
{
|
||
class_check_ivars ($2, $6);
|
||
(void) ($<class>5);
|
||
}
|
||
| IMPLEMENTATION class_name { class_begin (&$2->class_type); }
|
||
| IMPLEMENTATION class_with_super { class_begin (&$2->class_type); }
|
||
'{' { $<class>$ = $2; }
|
||
ivar_decl_list '}'
|
||
{
|
||
class_check_ivars ($2, $6);
|
||
(void) ($<class>5);
|
||
}
|
||
| IMPLEMENTATION class_with_super { class_begin (&$2->class_type); }
|
||
| IMPLEMENTATION category_name { class_begin (&$2->class_type); }
|
||
| REFERENCE class_reference ';' { }
|
||
| REFERENCE category_reference ';' { }
|
||
;
|
||
|
||
protocoldecl
|
||
: protocol
|
||
protocol_name_list ';'
|
||
{
|
||
while ($2) {
|
||
get_protocol ($2->name, 1);
|
||
$2 = $2->next;
|
||
}
|
||
}
|
||
;
|
||
|
||
protocoldef
|
||
: protocol
|
||
protocol_name
|
||
protocolrefs { protocol_add_protocols ($2, $3); $<class>$ = 0; }
|
||
methodprotolist { protocol_add_methods ($2, $5); }
|
||
END
|
||
{
|
||
current_class = $<class_type>1;
|
||
(void) ($<class>4);
|
||
}
|
||
;
|
||
|
||
protocol
|
||
: PROTOCOL { $<class_type>$ = current_class; }
|
||
;
|
||
|
||
protocolrefs
|
||
: /* emtpy */ { $$ = 0; }
|
||
| LT { $<protocol_list>$ = new_protocol_list (); }
|
||
protocol_list GT { $$ = $3; (void) ($<protocol_list>2); }
|
||
;
|
||
|
||
protocol_list
|
||
: identifier
|
||
{
|
||
$$ = add_protocol ($<protocol_list>0, $1->name);
|
||
}
|
||
| protocol_list ',' identifier
|
||
{
|
||
$$ = add_protocol ($1, $3->name);
|
||
}
|
||
;
|
||
|
||
ivar_decl_list
|
||
: /* empty */
|
||
{
|
||
symtab_t *tab, *ivars;
|
||
ivars = class_new_ivars ($<class>0);
|
||
for (tab = ivars; tab->parent; tab = tab->parent)
|
||
;
|
||
if (tab == current_symtab)
|
||
internal_error (0, "ivars already linked to parent scope");
|
||
$<symtab>$ = tab;
|
||
tab->parent = current_symtab;
|
||
current_symtab = ivars;
|
||
|
||
current_visibility = vis_protected;
|
||
}
|
||
ivar_decl_list_2
|
||
{
|
||
symtab_t *tab = $<symtab>1;
|
||
$$ = current_symtab;
|
||
current_symtab = tab->parent;
|
||
tab->parent = 0;
|
||
|
||
tab = $$->parent; // preserve the ivars inheritance chain
|
||
build_struct ('s', 0, $$, 0);
|
||
$$->parent = tab;
|
||
current_visibility = vis_public;
|
||
}
|
||
;
|
||
|
||
ivar_decl_list_2
|
||
: ivar_decl_list_2 visibility_spec ivar_decls
|
||
| ivar_decls
|
||
;
|
||
|
||
visibility_spec
|
||
: PRIVATE { current_visibility = vis_private; }
|
||
| PROTECTED { current_visibility = vis_protected; }
|
||
| PUBLIC { current_visibility = vis_public; }
|
||
;
|
||
|
||
ivar_decls
|
||
: /* empty */
|
||
| ivar_decls ivar_decl ';'
|
||
;
|
||
|
||
ivar_decl
|
||
: type ivars
|
||
| type
|
||
{
|
||
if (is_anonymous_struct ($1)) {
|
||
// anonymous struct/union
|
||
// type->name always begins with "tag "
|
||
$1.sym = new_symbol (va (".anonymous.%s", $1.type->name + 4));
|
||
$1.sym->type = $1.type;
|
||
$1.sym->sy_type = sy_var;
|
||
$1.sym->visibility = vis_anonymous;
|
||
symtab_addsymbol (current_symtab, $1.sym);
|
||
if (!$1.sym->table) {
|
||
error (0, "duplicate field `%s'", $1.sym->name);
|
||
}
|
||
} else {
|
||
// bare type
|
||
warning (0, "declaration does not declare anything");
|
||
}
|
||
}
|
||
;
|
||
|
||
ivars
|
||
: struct_decl
|
||
| ivars ',' { $<spec>$ = $<spec>0; } struct_decl { (void) ($<spec>3); }
|
||
;
|
||
|
||
methoddef
|
||
: ci methoddecl optional_state_expr
|
||
{
|
||
method_t *method = $2;
|
||
|
||
method->instance = $1;
|
||
$2 = method = class_find_method (current_class, method);
|
||
$<symbol>$ = method_symbol (current_class, method);
|
||
}
|
||
save_storage
|
||
{
|
||
method_t *method = $2;
|
||
const char *nicename = method_name (method);
|
||
symbol_t *sym = $<symbol>4;
|
||
symtab_t *ivar_scope;
|
||
|
||
$<symtab>$ = current_symtab;
|
||
|
||
ivar_scope = class_ivar_scope (current_class, current_symtab);
|
||
current_func = begin_function (sym, nicename, ivar_scope, 1);
|
||
class_finish_ivar_scope (current_class, ivar_scope,
|
||
current_func->symtab);
|
||
method->func = sym->s.func;
|
||
method->def = sym->s.func->def;
|
||
current_symtab = current_func->symtab;
|
||
current_storage = sc_local;
|
||
}
|
||
compound_statement
|
||
{
|
||
build_code_function ($<symbol>4, $3, $7);
|
||
current_symtab = $<symtab>6;
|
||
current_storage = $5.storage;
|
||
current_func = 0;
|
||
}
|
||
| ci methoddecl '=' '#' const ';'
|
||
{
|
||
symbol_t *sym;
|
||
method_t *method = $2;
|
||
|
||
method->instance = $1;
|
||
method = class_find_method (current_class, method);
|
||
sym = method_symbol (current_class, method);
|
||
build_builtin_function (sym, $5, 1);
|
||
method->func = sym->s.func;
|
||
method->def = sym->s.func->def;
|
||
}
|
||
;
|
||
|
||
ci
|
||
: '+' { $$ = 0; }
|
||
| '-' { $$ = 1; }
|
||
;
|
||
|
||
methodprotolist
|
||
: /* emtpy */ { $$ = 0; }
|
||
| methodprotolist2
|
||
;
|
||
|
||
methodprotolist2
|
||
: { } methodproto
|
||
{
|
||
$$ = new_methodlist ();
|
||
add_method ($$, $2);
|
||
}
|
||
| methodprotolist2 methodproto
|
||
{
|
||
add_method ($1, $2);
|
||
$$ = $1;
|
||
}
|
||
;
|
||
|
||
methodproto
|
||
: '+' methoddecl ';'
|
||
{
|
||
$2->instance = 0;
|
||
$$ = $2;
|
||
}
|
||
| '-' error ';'
|
||
{ $$ = new_method (&type_id, new_param ("", 0, 0), 0); }
|
||
| '+' error ';'
|
||
{ $$ = new_method (&type_id, new_param ("", 0, 0), 0); }
|
||
| '-' methoddecl ';'
|
||
{
|
||
$2->instance = 1;
|
||
$$ = $2;
|
||
}
|
||
;
|
||
|
||
methoddecl
|
||
: '(' abstract_decl ')' unaryselector
|
||
{ $$ = new_method ($2->type, $4, 0); }
|
||
| unaryselector
|
||
{ $$ = new_method (&type_id, $1, 0); }
|
||
| '(' abstract_decl ')' keywordselector optional_param_list
|
||
{ $$ = new_method ($2->type, $4, $5); }
|
||
| keywordselector optional_param_list
|
||
{ $$ = new_method (&type_id, $1, $2); }
|
||
;
|
||
|
||
optional_param_list
|
||
: /* empty */ { $$ = 0; }
|
||
| ',' ELLIPSIS { $$ = new_param (0, 0, 0); }
|
||
| ',' param_list { $$ = $2; }
|
||
| ',' param_list ',' ELLIPSIS
|
||
{
|
||
$$ = param_append_identifiers ($2, 0, 0);
|
||
}
|
||
;
|
||
|
||
unaryselector
|
||
: selector { $$ = new_param ($1->name, 0, 0); }
|
||
;
|
||
|
||
keywordselector
|
||
: keyworddecl
|
||
| keywordselector keyworddecl { $2->next = $1; $$ = $2; }
|
||
;
|
||
|
||
protocol_name_list
|
||
: identifier
|
||
| protocol_name_list ',' identifier { $3->next = $1; $$ = $3; }
|
||
|
||
selector
|
||
: NAME { $$ = $1; }
|
||
| CLASS_NAME { $$ = $1; }
|
||
| OBJECT { $$ = new_symbol (qc_yytext); }
|
||
| TYPE { $$ = new_symbol (qc_yytext); }
|
||
| TYPE_NAME { $$ = $1; }
|
||
| reserved_word
|
||
;
|
||
|
||
reserved_word
|
||
: LOCAL { $$ = new_symbol (qc_yytext); }
|
||
| RETURN { $$ = new_symbol (qc_yytext); }
|
||
| WHILE { $$ = new_symbol (qc_yytext); }
|
||
| DO { $$ = new_symbol (qc_yytext); }
|
||
| IF { $$ = new_symbol (qc_yytext); }
|
||
| ELSE { $$ = new_symbol (qc_yytext); }
|
||
| FOR { $$ = new_symbol (qc_yytext); }
|
||
| BREAK { $$ = new_symbol (qc_yytext); }
|
||
| CONTINUE { $$ = new_symbol (qc_yytext); }
|
||
| SWITCH { $$ = new_symbol (qc_yytext); }
|
||
| CASE { $$ = new_symbol (qc_yytext); }
|
||
| DEFAULT { $$ = new_symbol (qc_yytext); }
|
||
| NIL { $$ = new_symbol (qc_yytext); }
|
||
| STRUCT { $$ = new_symbol (qc_yytext); }
|
||
| ENUM { $$ = new_symbol (qc_yytext); }
|
||
| TYPEDEF { $$ = new_symbol (qc_yytext); }
|
||
;
|
||
|
||
keyworddecl
|
||
: selector ':' '(' abstract_decl ')' identifier
|
||
{ $$ = new_param ($1->name, $4->type, $6->name); }
|
||
| selector ':' identifier
|
||
{ $$ = new_param ($1->name, &type_id, $3->name); }
|
||
| ':' '(' abstract_decl ')' identifier
|
||
{ $$ = new_param ("", $3->type, $5->name); }
|
||
| ':' identifier
|
||
{ $$ = new_param ("", &type_id, $2->name); }
|
||
;
|
||
|
||
obj_expr
|
||
: obj_messageexpr
|
||
| SELECTOR '(' selectorarg ')' { $$ = selector_expr ($3); }
|
||
| PROTOCOL '(' identifier ')' { $$ = protocol_expr ($3->name); }
|
||
| ENCODE '(' abstract_decl ')' { $$ = encode_expr ($3->type); }
|
||
| obj_string /* FIXME string object? */
|
||
;
|
||
|
||
obj_messageexpr
|
||
: '[' receiver messageargs ']' { $$ = message_expr ($2, $3); }
|
||
;
|
||
|
||
receiver
|
||
: expr
|
||
| CLASS_NAME
|
||
{
|
||
$$ = new_symbol_expr ($1);
|
||
}
|
||
;
|
||
|
||
messageargs
|
||
: selector { $$ = new_keywordarg ($1->name, 0); }
|
||
| keywordarglist
|
||
;
|
||
|
||
keywordarglist
|
||
: keywordarg
|
||
| keywordarglist keywordarg
|
||
{
|
||
$2->next = $1;
|
||
$$ = $2;
|
||
}
|
||
;
|
||
|
||
keywordarg
|
||
: selector ':' arg_list { $$ = new_keywordarg ($1->name, $3); }
|
||
| ':' arg_list { $$ = new_keywordarg ("", $2); }
|
||
;
|
||
|
||
selectorarg
|
||
: selector { $$ = new_keywordarg ($1->name, 0); }
|
||
| keywordnamelist
|
||
;
|
||
|
||
keywordnamelist
|
||
: keywordname
|
||
| keywordnamelist keywordname
|
||
{
|
||
$2->next = $1;
|
||
$$ = $2;
|
||
}
|
||
;
|
||
|
||
keywordname
|
||
: selector ':' { $$ = new_keywordarg ($1->name, new_nil_expr ()); }
|
||
| ':' { $$ = new_keywordarg ("", new_nil_expr ()); }
|
||
;
|
||
|
||
obj_string
|
||
: '@' STRING
|
||
{
|
||
//FIXME string object
|
||
$$ = $2;
|
||
}
|
||
;
|
||
|
||
%%
|