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1/*
2 [The "BSD license"]
3 Copyright (c) 2005-2009 Jim Idle, Temporal Wave LLC
4 http://www.temporal-wave.com
5 http://www.linkedin.com/in/jimidle
6
7 All rights reserved.
8
9 Redistribution and use in source and binary forms, with or without
10 modification, are permitted provided that the following conditions
11 are met:
12 1. Redistributions of source code must retain the above copyright
13    notice, this list of conditions and the following disclaimer.
14 2. Redistributions in binary form must reproduce the above copyright
15    notice, this list of conditions and the following disclaimer in the
16    documentation and/or other materials provided with the distribution.
17 3. The name of the author may not be used to endorse or promote products
18    derived from this software without specific prior written permission.
19
20 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30*/
31/** Template overrides to add debugging to normal C output;
32 *  If ASTs are built, then you'll also get ASTDbg.stg loaded.
33 */
34@genericParser.members() ::= <<
35<if(grammar.grammarIsRoot)>
36const char *
37ruleNames[] =
38	{
39		"invalidRule", <grammar.allImportedRules:{rST | "<rST.name>"}; wrap="\n		", separator=", ">
40	};<\n>
41<endif>
42<if(grammar.grammarIsRoot)> <! grammar imports other grammar(s) !>
43static ANTLR3_UINT32 ruleLevel = 0;
44static ANTLR3_UINT32 getRuleLevel()
45{
46	return ruleLevel;
47}
48static void incRuleLevel()
49{
50	ruleLevel++;
51}
52static void decRuleLevel()
53{
54	ruleLevel--;
55}
56<else> <! imported grammar !>
57static ANTLR3_UINT32
58getRuleLevel()
59{
60	return <grammar.delegators:{g| <g:delegateName()>}>->getRuleLevel();
61}
62static void incRuleLevel()
63{
64	<grammar.delegators:{g| <g:delegateName()>}>->incRuleLevel();
65}
66static void
67decRuleLevel()
68{
69	<grammar.delegators:{g| <g:delegateName()>}>.decRuleLevel();
70}
71<endif>
72<if(profile)>
73// Profiling not yet implemented for C target
74//
75<endif>
76<if(grammar.grammarIsRoot)>
77<ctorForPredefinedListener()>
78<else>
79<ctorForDelegateGrammar()>
80<endif>
81
82static ANTLR3_BOOLEAN
83evalPredicate(p<name> ctx, ANTLR3_BOOLEAN result, const char * predicate)
84{
85    DBG->semanticPredicate(DBG, result, predicate);
86    return result;
87}<\n>
88>>
89
90@genericParser.debugStuff() ::= <<
91<if(grammar.grammarIsRoot)>
92<createListenerAndHandshake()>
93<endif>
94>>
95
96ctorForProfilingRootGrammar() ::= <<
97>>
98
99/** Basically we don't want to set any dbg listeners as root will have it. */
100ctorForDelegateGrammar() ::= <<
101
102>>
103
104ctorForPredefinedListener() ::= <<
105
106>>
107
108createListenerAndHandshake() ::= <<
109{
110	// DEBUG MODE code
111	//
112	pANTLR3_DEBUG_EVENT_LISTENER	 proxy;
113	proxy = antlr3DebugListenerNew();
114	proxy->grammarFileName = INPUT->tokenSource->strFactory->newStr8(INPUT->tokenSource->strFactory, (pANTLR3_UINT8)ctx->getGrammarFileName());
115
116<if(TREE_PARSER)>
117	proxy->adaptor = ADAPTOR;
118<endif>
119	PARSER->setDebugListener(PARSER, proxy);
120
121	// Try to connect to the debugger (waits forever for a connection)
122	//
123	proxy->handshake(proxy);
124
125	// End DEBUG MODE code
126	//
127}
128>>
129
130
131@rule.preamble() ::= <<
132if ( getRuleLevel()==0 )
133{
134	DBG->commence(DBG);
135}
136DBG->enterRule(DBG, getGrammarFileName(), (const char *)"<ruleName>");
137incRuleLevel();
138DBG->location(DBG, <ruleDescriptor.tree.line>, <ruleDescriptor.tree.column>);<\n>
139>>
140
141@rule.postamble() ::= <<
142DBG->location(DBG, <ruleDescriptor.EORNode.line>, <ruleDescriptor.EORNode.column>);<\n>
143DBG->exitRule(DBG, getGrammarFileName(), (const char *)"<ruleName>");
144decRuleLevel();
145if ( getRuleLevel()==0 )
146{
147	DBG->terminate(DBG);
148}
149<\n>
150>>
151
152@checkRuleBacktrackFailure.debugClean() ::= <<
153DBG->exitRule(DBG, getGrammarFileName(), (const char *)"<ruleName>");
154decRuleLevel();
155>>
156
157@synpred.start() ::= "DBG->beginBacktrack(DBG, BACKTRACKING);"
158
159@synpred.stop() ::= "DBG->endBacktrack(DBG, BACKTRACKING, success);"
160
161// Common debug event triggers used by region overrides below
162
163enterSubRule() ::=
164    "DBG->enterSubRule(DBG, <decisionNumber>);<\n>"
165
166exitSubRule() ::=
167    "DBG->exitSubRule(DBG, <decisionNumber>);<\n>"
168
169enterDecision() ::=
170    "DBG->enterDecision(DBG, <decisionNumber>);<\n>"
171
172exitDecision() ::=
173    "DBG->exitDecision(DBG, <decisionNumber>);<\n>"
174
175enterAlt(n) ::= "DBG->enterAlt(DBG, <n>);<\n>"
176
177// Region overrides that tell various constructs to add debugging triggers
178
179@block.predecision() ::= "<enterSubRule()><enterDecision()>"
180
181@block.postdecision() ::= "<exitDecision()>"
182
183@block.postbranch() ::= "<exitSubRule()>"
184
185@ruleBlock.predecision() ::= "<enterDecision()>"
186
187@ruleBlock.postdecision() ::= "<exitDecision()>"
188
189@ruleBlockSingleAlt.prealt() ::= "<enterAlt(n=\"1\")>"
190
191@blockSingleAlt.prealt() ::= "<enterAlt(n=\"1\")>"
192
193@positiveClosureBlock.preloop() ::= "<enterSubRule()>"
194
195@positiveClosureBlock.postloop() ::= "<exitSubRule()>"
196
197@positiveClosureBlock.predecision() ::= "<enterDecision()>"
198
199@positiveClosureBlock.postdecision() ::= "<exitDecision()>"
200
201@positiveClosureBlock.earlyExitException() ::=
202    "DBG->recognitionException(DBG, EXCEPTION);<\n>"
203
204@closureBlock.preloop() ::= "<enterSubRule()>"
205
206@closureBlock.postloop() ::= "<exitSubRule()>"
207
208@closureBlock.predecision() ::= "<enterDecision()>"
209
210@closureBlock.postdecision() ::= "<exitDecision()>"
211
212@altSwitchCase.prealt() ::= "<enterAlt(altNum)>"
213
214@element.prematch() ::=
215    "DBG->location(DBG, <e.line>, <e.pos>);" // e is arg of element
216
217@matchSet.mismatchedSetException() ::=
218    "DBG->recognitionException(DBG, EXCEPTION);"
219
220@newNVException.noViableAltException() ::= "DBG->recognitionException(DBG, EXCEPTION);"
221
222dfaDecision(decisionNumber,description) ::= <<
223alt<decisionNumber> = cdfa<decisionNumber>.predict(ctx, RECOGNIZER, ISTREAM, &cdfa<decisionNumber>);
224if  (HASEXCEPTION())
225{
226	DBG->recognitionException(DBG, EXCEPTION);
227    goto rule<ruleDescriptor.name>Ex;
228}
229<checkRuleBacktrackFailure()>
230>>
231
232@cyclicDFA.errorMethod() ::= <<
233//static void
234//dfaError(p<name> ctx)
235//{
236//    DBG->recognitionException(DBG, EXCEPTION);
237//}
238>>
239
240/** Force predicate validation to trigger an event */
241evalPredicate(pred,description) ::= <<
242evalPredicate(ctx, <pred>, (const char *)"<description>")
243>>
244