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|
/** Subset extracted from spin.y by Stefan Radomski 2014 */
/***** spin: spin.y *****/
/* Copyright (c) 1989-2003 by Lucent Technologies, Bell Laboratories. */
/* All Rights Reserved. This software is for educational purposes only. */
/* No guarantee whatsoever is expressed or implied by the distribution of */
/* this code. Permission is given to distribute this code provided that */
/* this introductory message is not removed and no monies are exchanged. */
/* Software written by Gerard J. Holzmann. For tool documentation see: */
/* http://spinroot.com/ */
/* Send all bug-reports and/or questions to: bugs@spinroot.com */
%{
#include "../PromelaParser.h"
#include "promela.tab.hpp"
#include <sys/types.h>
#include <stdarg.h>
#define YYMAXDEPTH 20000 // default is 10000
#define YYDEBUG 1
#define YYERROR_VERBOSE 1
extern int promela_lex (PROMELA_STYPE* yylval_param, void* yyscanner);
using namespace uscxml;
%}
%pure-parser
%file-prefix "promela"
%parse-param { uscxml::PromelaParser* ctx }
%lex-param {void * scanner}
%parse-param {void * scanner}
%define api.prefix promela_
%defines
%union {
uscxml::PromelaParserNode* node;
char* value;
}
%error-verbose
%type <node> expr pfld varref decl_lst vardcl ivar var_list one_decl
%token LBRACKET RBRACKET
%token <value> LEN
%token TYPEDEF MTYPE INLINE RETURN LABEL OF
%token GOTO BREAK ELSE SEMI ARROW
%token IF FI DO OD FOR SELECT IN SEP DOTDOT
%token HIDDEN SHOW ISLOCAL
%token <value> CONST TYPE XU /* val */
%token <value> NAME UNAME PNAME INAME /* sym */
%token STRING CLAIM TRACE INIT LTL /* sym */
%right ASGN
%left OR AND
%left BITOR BITXOR BITAND
%left EQ NE
%left GT LT GE LE
%left LSHIFT RSHIFT
%left PLUS MINUS
%left TIMES DIVIDE MODULO
%left COMPL
%right NEG
%left DOT
%%
/** PROMELA Grammar Rules **/
program :
decl_lst {
ctx->ast = $1;
ctx->type = PromelaParser::PROMELA_DECL;
}
| expr {
ctx->ast = $1;
ctx->type = PromelaParser::PROMELA_EXPR;
}
varref : cmpnd {}
;
pfld : NAME { $$ = ctx->value(yylval.value); }
| NAME '[' expr ']' {}
;
cmpnd : pfld {}
sfld {}
;
sfld : /* empty */ {}
| '.' cmpnd %prec DOT {}
;
expr : LBRACKET expr RBRACKET { $$ = $2; }
| expr PLUS expr { $$ = ctx->binOp(PLUS, $1, $3); }
| expr MINUS expr { $$ = ctx->binOp(MINUS, $1, $3); }
| expr TIMES expr { $$ = ctx->binOp(TIMES, $1, $3); }
| expr DIVIDE expr { $$ = ctx->binOp(DIVIDE, $1, $3); }
| expr MODULO expr { $$ = ctx->binOp(MODULO, $1, $3); }
| expr BITAND expr { $$ = ctx->binOp(BITAND, $1, $3); }
| expr BITXOR expr { $$ = ctx->binOp(BITXOR, $1, $3); }
| expr BITOR expr { $$ = ctx->binOp(BITOR, $1, $3); }
| expr GT expr { $$ = ctx->binOp(GT, $1, $3); }
| expr LT expr { $$ = ctx->binOp(LT, $1, $3); }
| expr GE expr { $$ = ctx->binOp(GE, $1, $3); }
| expr LE expr { $$ = ctx->binOp(LE, $1, $3); }
| expr EQ expr { $$ = ctx->binOp(EQ, $1, $3); }
| expr NE expr { $$ = ctx->binOp(NE, $1, $3); }
| expr AND expr { $$ = ctx->binOp(AND, $1, $3); }
| expr OR expr { $$ = ctx->binOp(OR, $1, $3); }
| expr LSHIFT expr { $$ = ctx->binOp(LSHIFT, $1, $3); }
| expr RSHIFT expr { $$ = ctx->binOp(RSHIFT, $1, $3); }
| NEG expr { $$ = ctx->uniOp(NEG, $2); }
| MINUS expr %prec MINUS { $$ = ctx->uniOp(MINUS, $2); }
| LEN '(' varref ')' { $$ = ctx->uniOp(LEN, $3); }
| varref { }
| CONST { $$ = ctx->value(yylval.value); }
;
vis : /* empty */ { }
| HIDDEN { }
| SHOW { }
| ISLOCAL { }
;
one_decl: vis TYPE var_list { $$ = ctx->uniOp(ASGN, $3); }
| vis UNAME var_list { }
| vis TYPE ASGN '{' nlst '}' { }
;
decl_lst: one_decl { }
| one_decl SEMI
decl_lst { }
;
var_list: ivar { $$ = ctx->uniOp(ASGN, $1); }
| ivar ',' var_list { $$ = ctx->binOp(ASGN, $1, $3); }
;
ivar : vardcl { $$ = ctx->uniOp(ASGN, $1); }
| vardcl ASGN expr { $$ = ctx->binOp(ASGN, $1, $3); }
;
vardcl : NAME { $$ = ctx->value(yylval.value); }
| NAME ':' CONST { }
| NAME '[' const_expr ']' { }
;
const_expr: CONST { }
| '-' const_expr %prec MINUS { }
| '(' const_expr ')' { }
| const_expr '+' const_expr { }
| const_expr '-' const_expr { }
| const_expr '*' const_expr { }
| const_expr '/' const_expr { }
| const_expr '%' const_expr { }
;
nlst : NAME { }
| nlst NAME { }
| nlst ',' { }
;
%%
|