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1 /* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
2  * Use of this file is governed by the BSD 3-clause license that
3  * can be found in the LICENSE.txt file in the project root.
4  */
5
6 #include "atn/PrecedencePredicateTransition.h"
7
8 using namespace antlr4::atn;
9
10 PrecedencePredicateTransition::PrecedencePredicateTransition(ATNState *target, int precedence)
11   : AbstractPredicateTransition(target), precedence(precedence) {
12 }
13
14 Transition::SerializationType PrecedencePredicateTransition::getSerializationType() const {
15   return PRECEDENCE;
16 }
17
18 bool PrecedencePredicateTransition::isEpsilon() const {
19   return true;
20 }
21
22 bool PrecedencePredicateTransition::matches(size_t /*symbol*/, size_t /*minVocabSymbol*/, size_t /*maxVocabSymbol*/) const {
23   return false;
24 }
25
26 Ref<SemanticContext::PrecedencePredicate> PrecedencePredicateTransition::getPredicate() const {
27   return std::make_shared<SemanticContext::PrecedencePredicate>(precedence);
28 }
29
30 std::string PrecedencePredicateTransition::toString() const {
31   return "PRECEDENCE " + Transition::toString() + " { precedence: " + std::to_string(precedence) + " }";
32 }