tgbaparse.yy 5.16 KB
Newer Older
Alexandre Duret-Lutz's avatar
Alexandre Duret-Lutz committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
/* Copyright (C) 2003  Laboratoire d'Informatique de Paris 6 (LIP6),
** dpartement Systmes Rpartis Coopratifs (SRC), Universit Pierre
** et Marie Curie.
**
** This file is part of Spot, a model checking library.
**
** Spot is free software; you can redistribute it and/or modify it
** under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** Spot is distributed in the hope that it will be useful, but WITHOUT
** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
** or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
** License for more details.
**
** You should have received a copy of the GNU General Public License
** along with Spot; see the file COPYING.  If not, write to the Free
** Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
** 02111-1307, USA.
*/
22
23
24
25
26
27
28
29
30
31
32
33
34
35
%{
#include <string>
#include "public.hh"
%}

%parse-param {spot::tgba_parse_error_list &error_list}
%parse-param {spot::ltl::environment &parse_environment}
%parse-param {spot::tgba_explicit* &result}
%debug
%error-verbose
%union
{
  int token;
  std::string* str;
36
37
  std::list<std::pair<bool, spot::ltl::formula*> >* listp;
  std::list<spot::ltl::formula*>* list;
38
39
40
}

%{
41
42
#include "ltlast/constant.hh"
#include "ltlvisit/destroy.hh"
43
#include "ltlparse/public.hh"
44

45
46
47
48
49
50
51
52
53
54
55
56
57
58
/* tgbaparse.hh and parsedecl.hh include each other recursively.
   We mut ensure that YYSTYPE is declared (by the above %union)
   before parsedecl.hh uses it. */
#include "parsedecl.hh"
using namespace spot::ltl;

/* Ugly hack so that Bison use tgbayylex, not yylex.
   (%name-prefix doesn't work for the lalr1.cc skeleton
   at the time of writing.)  */
#define yylex tgbayylex

typedef std::pair<bool, spot::ltl::formula*> pair;
%}

59
%token <str> STRING UNTERMINATED_STRING
60
%token <str> IDENT
61
%type <str> strident string
62
63
64
%type <listp> cond_list
%type <list> acc_list
%token ACC_DEF
65
66

%%
67
68
69
70
tgba: accepting_decl lines | lines;

accepting_decl: ACC_DEF acc_decl ';'

71
72
/* At least one line.  */
lines: line
73
74
75
       | lines line
       ;

76
line: strident ',' strident ',' cond_list ',' acc_list ';'
77
78
79
80
81
82
83
84
85
       {
	 spot::tgba_explicit::transition* t
	   = result->create_transition(*$1, *$3);
	 std::list<pair>::iterator i;
	 for (i = $5->begin(); i != $5->end(); ++i)
	   if (i->first)
	     result->add_neg_condition(t, i->second);
	   else
	     result->add_condition(t, i->second);
86
87
88
	 std::list<formula*>::iterator i2;
	 for (i2 = $7->begin(); i2 != $7->end(); ++i2)
	     result->add_accepting_condition(t, *i2);
89
90
91
92
93
94
95
	 delete $1;
	 delete $3;
	 delete $5;
	 delete $7;
       }
       ;

96
97
98
99
100
101
102
103
string: STRING
       | UNTERMINATED_STRING
       {
	 error_list.push_back(spot::tgba_parse_error(@1,
						     "unterminated string"));
       }

strident: string | IDENT
104

105
cond_list:
106
107
108
       {
	 $$ = new std::list<pair>;
       }
109
       | cond_list string
110
       {
111
	 if (*$2 != "")
112
	   {
113
114
115
116
117
118
119
120
121
122
123
124
125
126
	     parse_error_list pel;
	     formula* f = spot::ltl::parse(*$2, pel, parse_environment);
	     for (parse_error_list::iterator i = pel.begin();
		  i != pel.end(); ++i)
	       {
		 // Adjust the diagnostic to the current position.
		 Location here = @2;
		 here.begin.line += i->first.begin.line;
		 here.begin.column += i->first.begin.column;
		 here.end.line = here.begin.line + i->first.begin.line;
		 here.end.column = here.begin.column + i->first.begin.column;
		 error_list.push_back(spot::tgba_parse_error(here, i->second));
	       }
	     $1->push_back(pair(false, f));
127
	   }
128
129
130
	 delete $2;
	 $$ = $1;
       }
131
       | cond_list '!' strident
132
       {
133
	 if (*$3 != "")
134
135
136
	   {
	     $1->push_back(pair(true, parse_environment.require(*$3)));
	   }
137
138
139
140
141
	 delete $3;
	 $$ = $1;
       }
       ;

142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
acc_list:
       {
	 $$ = new std::list<formula*>;
       }
       | acc_list strident
       {
	 if (*$2 == "true")
	   {
	     $1->push_back(constant::true_instance());
	   }
	 else if (*$2 != "" && *$2 != "false")
	   {
	     formula* f = parse_environment.require(*$2);
	     if (! result->has_accepting_condition(f))
	       {
		 error_list.push_back(spot::tgba_parse_error(@2,
			 "undeclared accepting condition"));
		 destroy(f);
		 delete $2;
		 YYERROR;
	       }
	     $1->push_back(f);
	   }
	 delete $2;
	 $$ = $1;
       }
       ;


acc_decl:
       | acc_decl strident
       {
	 formula* f = parse_environment.require(*$2);
	 result->declare_accepting_condition(f);
	 delete $2;
       }
       ;
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199

%%

void
yy::Parser::print_()
{
  if (looka_ == STRING || looka_ == IDENT)
    YYCDEBUG << " '" << *value.str << "'";
}

void
yy::Parser::error_()
{
  error_list.push_back(spot::tgba_parse_error(location, message));
}

namespace spot
{
  tgba_explicit*
  tgba_parse(const std::string& name,
	     tgba_parse_error_list& error_list,
200
	     bdd_dict* dict,
201
202
203
204
	     environment& env,
	     bool debug)
  {
    if (tgbayyopen(name))
205
206
207
208
209
210
211
212
213
214
215
216
      {
	error_list.push_back
	  (tgba_parse_error(yy::Location(),
			    std::string("Cannot open file ") + name));
	return 0;
      }
    tgba_explicit* result = new tgba_explicit(dict);
    tgbayy::Parser parser(debug, yy::Location(), error_list, env, result);
    parser.parse();
    tgbayyclose();
    return result;
  }
217
218
219
220
221
}

// Local Variables:
// mode: c++
// End: