Class: PredicateTransition

Inherits:
AbstractPredicateTransition show all
Defined in:
lib/antlr4/atn/Transition.rb

Constant Summary

Constants inherited from Transition

Transition::ACTION, Transition::ATOM, Transition::EPSILON, Transition::NOT_SET, Transition::PRECEDENCE, Transition::PREDICATE, Transition::RANGE, Transition::RULE, Transition::SET, Transition::WILDCARD

Instance Attribute Summary collapse

Attributes inherited from Transition

#isEpsilon, #serializationType, #target

Instance Method Summary collapse

Methods inherited from Transition

#label, serializationNames, serializationTypes, serializationTypes=

Constructor Details

#initialize(_target, rule_index, pred_index, is_ctx_dependent) ⇒ PredicateTransition

Returns a new instance of PredicateTransition.



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# File 'lib/antlr4/atn/Transition.rb', line 161

def initialize(_target, rule_index, pred_index, is_ctx_dependent)
    super(_target)
    self.serializationType = Transition::PREDICATE
    self.ruleIndex = rule_index
    self.predIndex = pred_index
    self.isCtxDependent = is_ctx_dependent # e.g., $i ref in pred
    self.isEpsilon = true
end

Instance Attribute Details

#isCtxDependent ⇒ Object

Returns the value of attribute isCtxDependent.



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# File 'lib/antlr4/atn/Transition.rb', line 160

def isCtxDependent
  @isCtxDependent
end

#predIndex ⇒ Object

Returns the value of attribute predIndex.



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# File 'lib/antlr4/atn/Transition.rb', line 160

def predIndex
  @predIndex
end

#ruleIndex ⇒ Object

Returns the value of attribute ruleIndex.



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# File 'lib/antlr4/atn/Transition.rb', line 160

def ruleIndex
  @ruleIndex
end

Instance Method Details

#getPredicate ⇒ Object 



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# File 'lib/antlr4/atn/Transition.rb', line 174

def getPredicate()
    return Predicate.new(self.ruleIndex, self.predIndex, self.isCtxDependent)
end

#matches(symbol, minVocabSymbol, maxVocabSymbol) ⇒ Object 



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# File 'lib/antlr4/atn/Transition.rb', line 170

def matches( symbol, minVocabSymbol,  maxVocabSymbol)
    return false
end

#to_s ⇒ Object 



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# File 'lib/antlr4/atn/Transition.rb', line 178

def to_s
    return "pred_#{self.ruleIndex}:#{self.predIndex}"
end