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/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
* Use of this file is governed by the BSD 3-clause license that
* can be found in the LICENSE.txt file in the project root.
*/
#include "atn/ATN.h"
#include "atn/Transition.h"
#include "misc/IntervalSet.h"
#include "support/CPPUtils.h"
#include "atn/ATNState.h"
using namespace antlr4::atn;
using namespace antlrcpp;
ATNState::ATNState() {}
ATNState::~ATNState() {
for (auto transition : transitions) {
delete transition;
}
}
const std::vector<std::string> ATNState::serializationNames = {
"INVALID", "BASIC",
"RULE_START", "BLOCK_START",
"PLUS_BLOCK_START", "STAR_BLOCK_START",
"TOKEN_START", "RULE_STOP",
"BLOCK_END", "STAR_LOOP_BACK",
"STAR_LOOP_ENTRY", "PLUS_LOOP_BACK",
"LOOP_END"};
size_t ATNState::hashCode() { return stateNumber; }
bool ATNState::operator==(const ATNState& other) {
return stateNumber == other.stateNumber;
}
bool ATNState::isNonGreedyExitState() { return false; }
std::string ATNState::toString() const { return std::to_string(stateNumber); }
void ATNState::addTransition(Transition* e) {
addTransition(transitions.size(), e);
}
void ATNState::addTransition(size_t index, Transition* e) {
for (Transition* transition : transitions)
if (transition->target->stateNumber == e->target->stateNumber) {
delete e;
return;
}
if (transitions.empty()) {
epsilonOnlyTransitions = e->isEpsilon();
} else if (epsilonOnlyTransitions != e->isEpsilon()) {
std::cerr << "ATN state %d has both epsilon and non-epsilon transitions.\n"
<< stateNumber;
epsilonOnlyTransitions = false;
}
transitions.insert(transitions.begin() + index, e);
}
Transition* ATNState::removeTransition(size_t index) {
Transition* result = transitions[index];
transitions.erase(transitions.begin() + index);
return result;
}
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