mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-14 17:01:22 +00:00
2173 lines
46 KiB
Text
2173 lines
46 KiB
Text
%{
|
||
/*
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||
qc-parse.y
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||
|
||
parser for quakec
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||
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Copyright (C) 2001 Bill Currie <bill@taniwha.org>
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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
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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
|
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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
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||
along with this program; if not, write to:
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||
|
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Free Software Foundation, Inc.
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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
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#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"
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#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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#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
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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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%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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%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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%token <symbol> CLASS_NAME NAME
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%token <expr> VALUE STRING
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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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%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
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%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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%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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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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}
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// struct and union type names always begin with "tag ". Untagged s/u
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// are "tag .<filename>.<id>".
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if (spec.type->name[4] != '.') {
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return 0;
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}
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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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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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}
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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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}
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| external_def_list external_def
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| external_def_list obj_def
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| 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;
|
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}
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| error ';'
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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;
|
||
}
|
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| error '}'
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{
|
||
yyerrok;
|
||
current_class = 0;
|
||
current_symtab = pr.symtab;
|
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current_storage = sc_global;
|
||
}
|
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;
|
||
|
||
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;
|
||
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;
|
||
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;
|
||
symtab_addsymbol (current_symtab, $1);
|
||
} else {
|
||
$1 = function_symbol ($1, spec.is_overload, 1);
|
||
// things might be a confused mess from earlier errors
|
||
if ($1->sy_type == sy_func)
|
||
make_function ($1, 0, $1->table->space, spec.storage);
|
||
}
|
||
}
|
||
;
|
||
|
||
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 || !obj_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");
|
||
}
|
||
$$ = $1;
|
||
}
|
||
;
|
||
|
||
struct_decl_list
|
||
: struct_decl_list ',' { $<spec>$ = $<spec>0; }
|
||
struct_decl { (void) ($<spec>3); }
|
||
| struct_decl
|
||
;
|
||
|
||
struct_decl
|
||
: function_decl
|
||
{
|
||
if (!$<spec>0.type)
|
||
$<spec>0.type = type_default;
|
||
$1->type = append_type ($1->type, $<spec>0.type);
|
||
$1->type = find_type ($1->type);
|
||
$1->sy_type = sy_var;
|
||
$1->visibility = current_visibility;
|
||
symtab_addsymbol (current_symtab, $1);
|
||
if (!$1->table) {
|
||
error (0, "duplicate field `%s'", $1->name);
|
||
}
|
||
}
|
||
| var_decl
|
||
{
|
||
if (!$<spec>0.type)
|
||
$<spec>0.type = type_default;
|
||
$1->type = append_type ($1->type, $<spec>0.type);
|
||
$1->type = find_type ($1->type);
|
||
$1->sy_type = sy_var;
|
||
$1->visibility = current_visibility;
|
||
symtab_addsymbol (current_symtab, $1);
|
||
if (!$1->table) {
|
||
error (0, "duplicate field `%s'", $1->name);
|
||
}
|
||
}
|
||
| var_decl ':' expr %prec COMMA {}
|
||
| ':' expr %prec COMMA {}
|
||
;
|
||
|
||
new_name
|
||
: NAME %prec COMMA
|
||
{
|
||
$$ = $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 ($3 != &type_void)
|
||
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 ($$->type, $1.type));
|
||
}
|
||
;
|
||
|
||
qc_param_decl
|
||
: type new_name
|
||
{
|
||
$2->type = find_type ($1.type);
|
||
$$ = 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 = append_type ($1->type, spec.type);
|
||
$1->type = find_type ($1->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 (!obj_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;
|
||
}
|
||
;
|
||
|
||
%%
|