/* 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/LexerTypeAction.h"

#include "Lexer.h"
#include "misc/MurmurHash.h"

using namespace antlr4;
using namespace antlr4::atn;
using namespace antlr4::misc;

LexerTypeAction::LexerTypeAction(int type) : _type(type) {}

int LexerTypeAction::getType() const {
    return _type;
}

LexerActionType LexerTypeAction::getActionType() const {
    return LexerActionType::TYPE;
}

bool LexerTypeAction::isPositionDependent() const {
    return false;
}

void LexerTypeAction::execute(Lexer* lexer) {
    lexer->setType(_type);
}

size_t LexerTypeAction::hashCode() const {
    size_t hash = MurmurHash::initialize();
    hash = MurmurHash::update(hash, static_cast<size_t>(getActionType()));
    hash = MurmurHash::update(hash, _type);
    return MurmurHash::finish(hash, 2);
}

bool LexerTypeAction::operator==(const LexerAction& obj) const {
    if (&obj == this) {
        return true;
    }

    const LexerTypeAction* action = dynamic_cast<const LexerTypeAction*>(&obj);
    if (action == nullptr) {
        return false;
    }

    return _type == action->_type;
}

std::string LexerTypeAction::toString() const {
    return "type(" + std::to_string(_type) + ")";
}
