src/decaf/src/main/decaf/lang/Boolean.cpp

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "Boolean.h"
#include <sstream>

using namespace decaf;
using namespace decaf::lang;

////////////////////////////////////////////////////////////////////////////////
const Boolean Boolean::_FALSE( false );
const Boolean Boolean::_TRUE( true );

////////////////////////////////////////////////////////////////////////////////
Boolean::Boolean( bool value ) {
    this->value = value;
}

////////////////////////////////////////////////////////////////////////////////
Boolean::Boolean( const std::string& value ) {
    this->value = parseBoolean( value );
}

////////////////////////////////////////////////////////////////////////////////
int Boolean::compareTo( const Boolean& b ) const {
    if( this->value == b.value ) {
        return 0;
    } else if( this->value && !b.value ) {
        return 1;
    } else {
        return -1;
    }
}

////////////////////////////////////////////////////////////////////////////////
bool Boolean::operator==( const Boolean& b ) const {
    return this->value == b.value;
}

////////////////////////////////////////////////////////////////////////////////
bool Boolean::operator<( const Boolean& b ) const {
    return this->value < b.value;
}

////////////////////////////////////////////////////////////////////////////////
int Boolean::compareTo( const bool& b ) const {
    if( this->value == b ) {
        return 0;
    } else if( this->value && !b ) {
        return 1;
    } else {
        return -1;
    }
}

////////////////////////////////////////////////////////////////////////////////
bool Boolean::operator==( const bool& b ) const {
    return this->value == b;
}

////////////////////////////////////////////////////////////////////////////////
bool Boolean::operator<( const bool& b ) const {
    return this->value < b;
}

////////////////////////////////////////////////////////////////////////////////
std::string Boolean::toString() const {
    return this->value ? "true" : "false";
}

////////////////////////////////////////////////////////////////////////////////
Boolean Boolean::valueOf( const std::string& value ) {
    return Boolean( value );
}

////////////////////////////////////////////////////////////////////////////////
Boolean Boolean::valueOf( bool value ) {
    return Boolean( value );
}

////////////////////////////////////////////////////////////////////////////////
bool Boolean::parseBoolean( const std::string& value ) {
    bool ret = 0;
    std::istringstream istream( value );
    istream.clear();
    istream >> std::boolalpha >> ret;
    return ret;
}

////////////////////////////////////////////////////////////////////////////////
std::string Boolean::toString( bool value ) {
    return value ? "true" : "false";
}