1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
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
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
|
/**
* @file
* @author 2012-2014 Stefan Radomski (stefan.radomski@cs.tu-darmstadt.de)
* @copyright Simplified BSD
*
* @cond
* This program is free software: you can redistribute it and/or modify
* it under the terms of the FreeBSD license as published by the FreeBSD
* project.
*
* This program 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.
*
* You should have received a copy of the FreeBSD license along with this
* program. If not, see <http://www.opensource.org/licenses/bsd-license>.
* @endcond
*/
#include "PromelaParser.h"
#include "parser/promela.tab.hpp"
struct yy_buffer_state;
typedef yy_buffer_state *YY_BUFFER_STATE;
extern YY_BUFFER_STATE promela__scan_buffer(char *, size_t, void*);
void promela__delete_buffer(YY_BUFFER_STATE, void*);
YY_BUFFER_STATE promela__scan_string (const char * yystr , void*);
extern int promela_lex (PROMELA_STYPE* yylval_param, void* yyscanner);
int promela_lex_init (void**);
int promela_lex_destroy (void*);
void promela_error (uscxml::PromelaParser* ctx, void* yyscanner, const char* err) {
// mark as pending exception as we cannot throw from constructor and have the destructor called
uscxml::Event excEvent;
excEvent.data.compound["exception"] = uscxml::Data(err, uscxml::Data::VERBATIM);
excEvent.name = "error.execution";
excEvent.eventType = uscxml::Event::PLATFORM;
ctx->pendingException = excEvent;
}
namespace uscxml {
PromelaParser::PromelaParser(const std::string& expr) {
init(expr);
}
PromelaParser::PromelaParser(const std::string& expr, Type expectedType) {
init(expr);
if (type != expectedType) {
std::stringstream ss;
ss << "Promela syntax type mismatch: Expected " << typeToDesc(expectedType) << " but got " << typeToDesc(type);
uscxml::Event excEvent;
excEvent.data.compound["exception"] = uscxml::Data(ss.str(), uscxml::Data::VERBATIM);
excEvent.name = "error.execution";
excEvent.eventType = uscxml::Event::PLATFORM;
throw excEvent;
}
}
void PromelaParser::init(const std::string& expr) {
ast = NULL;
input_length = expr.length() + 2; // plus some zero terminators
input = (char*) calloc(1, input_length);
memcpy(input, expr.c_str(), expr.length());
promela_lex_init(&scanner);
// promela_assign_set_extra(ast, &scanner);
buffer = promela__scan_string(input, scanner);
// buffer = promela__scan_buffer(input, input_length, scanner);
promela_parse(this, scanner);
if (pendingException.name.size() > 0) {
// parsing failed in promela_error
destroy();
throw pendingException;
}
}
void PromelaParser::destroy() {
if (ast)
delete(ast);
free(input);
promela__delete_buffer((YY_BUFFER_STATE)buffer, scanner);
promela_lex_destroy(scanner);
}
PromelaParser::~PromelaParser() {
destroy();
}
std::string PromelaParser::typeToDesc(int type) {
switch (type) {
case PROMELA_EXPR:
return "expression";
case PROMELA_DECL:
return "declarations";
case PROMELA_STMNT:
return "statements";
default:
break;
}
return "";
}
PromelaParserNode::~PromelaParserNode() {
while(operands.size() > 0) {
delete operands.front();
operands.pop_front();
}
}
PromelaParserNode* PromelaParser::node(int type, int nrArgs, ...) {
PromelaParserNode* newNode = new PromelaParserNode();
newNode->type = type;
va_list ap;
va_start(ap, nrArgs);
for(int i = 1; i <= nrArgs; i++) {
newNode->operands.push_back(va_arg(ap, PromelaParserNode*));
}
return newNode;
}
PromelaParserNode* PromelaParser::value(int type, const char* value) {
PromelaParserNode* newNode = new PromelaParserNode();
newNode->value = value;
newNode->type = type;
return newNode;
}
void PromelaParser::dump() {
switch (type) {
case PROMELA_EXPR:
std::cout << "Promela Expression" << std::endl;
break;
case PROMELA_DECL:
std::cout << "Promela Declarations" << std::endl;
break;
case PROMELA_STMNT:
std::cout << "Promela Statement" << std::endl;
break;
}
ast->dump();
}
void PromelaParserNode::merge(PromelaParserNode* node) {
for (std::list<PromelaParserNode*>::iterator iter = node->operands.begin();
iter != node->operands.end(); iter++) {
operands.push_back(*iter);
}
node->operands.clear();
}
void PromelaParserNode::push(PromelaParserNode* node) {
operands.push_back(node);
}
void PromelaParserNode::dump(int indent) {
std::string padding;
for (int i = 0; i < indent; i++) {
padding += " ";
}
std::cout << padding << typeToDesc(type) << ": " << value << std::endl;
for (std::list<PromelaParserNode*>::iterator iter = operands.begin();
iter != operands.end(); iter++) {
(*iter)->dump(indent + 1);
}
}
std::string PromelaParserNode::typeToDesc(int type) {
switch(type) {
case PML_PLUS:
return "PLUS";
case PML_MINUS:
return "MINUS";
case PML_TIMES:
return "TIMES";
case PML_DIVIDE:
return "DIVIDE";
case PML_MODULO:
return "MODULO";
case PML_BITAND:
return "BITAND";
case PML_BITXOR:
return "BITXOR";
case PML_BITOR:
return "BITOR";
case PML_GT:
return "GT";
case PML_LT:
return "LT";
case PML_GE:
return "GE";
case PML_LE:
return "LE";
case PML_EQ:
return "EQ";
case PML_NE:
return "NE";
case PML_AND:
return "AND";
case PML_OR:
return "OR";
case PML_LSHIFT:
return "LSHIFT";
case PML_RSHIFT:
return "RSHIFT";
case PML_NEG:
return "NEG";
case PML_ASGN:
return "ASGN";
case PML_INCR:
return "INCR";
case PML_DECR:
return "DECR";
case PML_VAR_ARRAY:
return "VAR_ARRAY";
case PML_DECL:
return "DECL";
case PML_STMNT:
return "STMNT";
case PML_TYPE:
return "TYPE";
case PML_NAME:
return "NAME";
case PML_CONST:
return "CONST";
case PML_PRINT:
return "PRINT";
case PML_SHOW:
return "SHOW";
case PML_EXPR:
return "EXPR";
case PML_VARLIST:
return "VARLIST";
case PML_DECLLIST:
return "DECLLIST";
case PML_NAMELIST:
return "NAMELIST";
default:
return std::string("UNK(") + toStr(type) + ")";
}
}
}
|