public static class SemanticContext.Predicate extends SemanticContext
SemanticContext.AND, SemanticContext.Operator, SemanticContext.OR, SemanticContext.PrecedencePredicate, SemanticContext.Predicate
Modifier and Type | Field | Description |
---|---|---|
boolean |
isCtxDependent |
|
int |
predIndex |
|
int |
ruleIndex |
NONE
Modifier | Constructor | Description |
---|---|---|
protected |
Predicate() |
|
|
Predicate(int ruleIndex,
int predIndex,
boolean isCtxDependent) |
Modifier and Type | Method | Description |
---|---|---|
boolean |
equals(Object obj) |
|
boolean |
eval(Recognizer<?,?> parser,
RuleContext parserCallStack) |
For context independent predicates, we evaluate them without a local
context (i.e., null context).
|
int |
hashCode() |
|
String |
toString() |
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
and, evalPrecedence, or
public final int ruleIndex
public final int predIndex
public final boolean isCtxDependent
protected Predicate()
public Predicate(int ruleIndex, int predIndex, boolean isCtxDependent)
public boolean eval(Recognizer<?,?> parser, RuleContext parserCallStack)
SemanticContext
For context dependent predicates, we must pass in a local context so that references such as $arg evaluate properly as _localctx.arg. We only capture context dependent predicates in the context in which we begin prediction, so we passed in the outer context here in case of context dependent predicate evaluation.
eval
in class SemanticContext
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