/*
 * 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 "Short.h"
#include "Integer.h"

#include <sstream>

using namespace decaf;
using namespace decaf::lang;
using namespace decaf::lang::exceptions;

////////////////////////////////////////////////////////////////////////////////
const int Short::SIZE = 16;
const short Short::MAX_VALUE = (short)0x7FFF;
const short Short::MIN_VALUE = (short)0x8000;

////////////////////////////////////////////////////////////////////////////////
Short::Short( short value ) : value(value) {
}

////////////////////////////////////////////////////////////////////////////////
Short::Short( const std::string& value ) : value(0) {
    Short::parseShort( value );
}

////////////////////////////////////////////////////////////////////////////////
int Short::compareTo( const Short& s ) const {
    return value == s.value ? 0 : ( value > s.value ? 1 : -1 );
}

////////////////////////////////////////////////////////////////////////////////
int Short::compareTo( const short& s ) const {
    return value == s ? 0 : ( value > s ? 1 : -1 );
}

////////////////////////////////////////////////////////////////////////////////
std::string Short::toString() const {
    return Integer::toString( this->value );
}

////////////////////////////////////////////////////////////////////////////////
std::string Short::toString( short value ) {
    return Integer::toString( value );
}

////////////////////////////////////////////////////////////////////////////////
short Short::parseShort( const std::string& s, int radix ) {

    int intValue = Integer::parseInt( s, radix );
    short result = (short)intValue;
    if( result != intValue ) {
        throw NumberFormatException(
            __FILE__, __LINE__,
            "Short::parseShort - Not a valid short encoded string.");
    }

    return result;
}

////////////////////////////////////////////////////////////////////////////////
short Short::parseShort( const std::string& s ) {
    return parseShort( s, 10 );
}

////////////////////////////////////////////////////////////////////////////////
Short Short::decode( const std::string& value ) {

    int intValue = Integer::decode( value ).intValue();
    short result = (short)intValue;
    if( result != intValue ) {
        throw NumberFormatException(
            __FILE__, __LINE__,
            "Short::decode - Not a valid short encoded string.");
    }

    return Short( result );
}

////////////////////////////////////////////////////////////////////////////////
short Short::reverseBytes( short value ) {
    unsigned short temp = value;
    temp = (unsigned short)( ( ( temp & 0xFF00 ) >> 8 ) | ( ( temp & 0x00FF ) << 8 ) );
    return temp;
}

////////////////////////////////////////////////////////////////////////////////
Short Short::valueOf( short value ) {
    return Short( value );
}

////////////////////////////////////////////////////////////////////////////////
Short Short::valueOf( const std::string& value ) {

    return Short( parseShort( value, 10 ) );
}

////////////////////////////////////////////////////////////////////////////////
Short Short::valueOf( const std::string& value, int radix ) {

    return Short( parseShort( value, radix ) );
}