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Show additional information about rules and viable alternatives for conflicts, ambiguity, and/or context sensitivity

This commit is contained in:
Sam Harwell 2013-05-18 11:46:57 -05:00
parent aad78ba7d2
commit 8d0a1bbd8d
1 changed files with 29 additions and 3 deletions
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32
tool/test/org/antlr/v4/test/TestPerformance.java
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@ -1426,6 +1426,15 @@ public class TestPerformance extends BaseTest {
}
private static BitSet getRepresentedAlts(ATNConfigSet configs) {
BitSet alts = new BitSet();
for (ATNConfig config : configs) {
alts.set(config.alt);
}
return alts;
}
private static class SummarizingDiagnosticErrorListener extends DiagnosticErrorListener {
@Override
@ -1434,7 +1443,12 @@ public class TestPerformance extends BaseTest {
return;
}
super.reportAmbiguity(recognizer, dfa, startIndex, stopIndex, ambigAlts, configs);
// show the rule name along with the decision
String format = "reportAmbiguity d=%d (%s): ambigAlts=%s, input='%s'";
int decision = dfa.decision;
String rule = recognizer.getRuleNames()[dfa.atnStartState.ruleIndex];
String input = recognizer.getTokenStream().getText(Interval.of(startIndex, stopIndex));
recognizer.notifyErrorListeners(String.format(format, decision, rule, ambigAlts, input));
}
@Override
@ -1443,7 +1457,13 @@ public class TestPerformance extends BaseTest {
return;
}
super.reportAttemptingFullContext(recognizer, dfa, startIndex, stopIndex, configs);
// show the rule name and viable configs along with the base info
String format = "reportAttemptingFullContext d=%d (%s), input='%s', viable=%s";
int decision = dfa.decision;
String rule = recognizer.getRuleNames()[dfa.atnStartState.ruleIndex];
String input = recognizer.getTokenStream().getText(Interval.of(startIndex, stopIndex));
BitSet representedAlts = getRepresentedAlts(configs);
recognizer.notifyErrorListeners(String.format(format, decision, rule, input, representedAlts));
}
@Override
@ -1452,7 +1472,13 @@ public class TestPerformance extends BaseTest {
return;
}
super.reportContextSensitivity(recognizer, dfa, startIndex, stopIndex, configs);
// show the rule name and viable configs along with the base info
String format = "reportContextSensitivity d=%d (%s), input='%s', viable=%s";
int decision = dfa.decision;
String rule = recognizer.getRuleNames()[dfa.atnStartState.ruleIndex];
String input = recognizer.getTokenStream().getText(Interval.of(startIndex, stopIndex));
BitSet representedAlts = getRepresentedAlts(configs);
recognizer.notifyErrorListeners(String.format(format, decision, rule, input, representedAlts));
}
}