/**
* Build what amounts to an epsilon transition with a semantic predicate action. The pred is a
* pointer into the AST of the SEMPRED token.
*/
public Handle sempred(PredAST pred) {
// System.out.println("sempred: "+ pred);
ATNState left = newState(pred);
ATNState right = newState(pred);
boolean isCtxDependent = UseDefAnalyzer.actionIsContextDependent(pred);
PredicateTransition p =
new PredicateTransition(right, currentRule.index, g.sempreds.get(pred), isCtxDependent);
left.addTransition(p);
pred.atnState = left;
return new Handle(left, right);
}
/**
* Build what amounts to an epsilon transition with a semantic predicate action. The {@code pred}
* is a pointer into the AST of the {@link ANTLRParser#SEMPRED} token.
*/
@Override
public Handle sempred(PredAST pred) {
// System.out.println("sempred: "+ pred);
ATNState left = newState(pred);
ATNState right = newState(pred);
AbstractPredicateTransition p;
if (pred.getOptionString(LeftRecursiveRuleTransformer.PRECEDENCE_OPTION_NAME) != null) {
int precedence =
Integer.parseInt(
pred.getOptionString(LeftRecursiveRuleTransformer.PRECEDENCE_OPTION_NAME));
p = new PrecedencePredicateTransition(right, precedence);
} else {
boolean isCtxDependent = UseDefAnalyzer.actionIsContextDependent(pred);
p = new PredicateTransition(right, currentRule.index, g.sempreds.get(pred), isCtxDependent);
}
left.addTransition(p);
pred.atnState = left;
return new Handle(left, right);
}
