/* 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/Transition.h"

#include "Exceptions.h"
#include "support/Arrays.h"

using namespace antlr4;
using namespace antlr4::atn;

using namespace antlrcpp;

const std::vector<std::string> Transition::serializationNames = {"INVALID", "EPSILON", "RANGE",
    "RULE", "PREDICATE", "ATOM", "ACTION", "SET", "NOT_SET", "WILDCARD", "PRECEDENCE"};

Transition::Transition(ATNState* target) {
    if (target == nullptr) {
        throw NullPointerException("target cannot be null.");
    }

    this->target = target;
}

Transition::~Transition() {}

bool Transition::isEpsilon() const {
    return false;
}

misc::IntervalSet Transition::label() const {
    return misc::IntervalSet::EMPTY_SET;
}

std::string Transition::toString() const {
    std::stringstream ss;
    ss << "(Transition " << std::hex << this << ", target: " << std::hex << target << ')';

    return ss.str();
}
