<?php
// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
namespace Google\Protobuf\Internal;
class GPBInteger
{
public $high = 0;
public $low = 0;
public function __construct($value = 0)
{
$this->low = $value & 0xFFFFFFFF;
if (PHP_INT_SIZE === 8) {
$this->high = ($value >> 32) & 0xFFFFFFFF;
}
}
// Return 0 for unsigned integers and 1 for signed integers.
protected function sign()
{
trigger_error("Not implemented", E_ERROR);
}
public function leftShift($count)
{
if ($count > 63) {
$this->low = 0;
$this->high = 0;
return;
}
if ($count > 32) {
$this->high = $this->low;
$this->low = 0;
$count -= 32;
}
$mask = (1 << $count) - 1;
$this->high = (($this->high << $count) & 0xFFFFFFFF) |
(($this->low >> (32 - $count)) & $mask);
$this->low = ($this->low << $count) & 0xFFFFFFFF;
$this->high &= 0xFFFFFFFF;
$this->low &= 0xFFFFFFFF;
return $this;
}
public function rightShift($count)
{
$sign = (($this->high & 0x80000000) >> 31) & $this->sign();
if ($count > 63) {
$this->low = -$sign;
$this->high = -$sign;
return;
}
if ($count > 32) {
$this->low = $this->high;
$this->high = -$sign;
$count -= 32;
}
$this->low = (($this->low >> $count) & 0xFFFFFFFF) |
(($this->high << (32 - $count)) & 0xFFFFFFFF);
$this->high = (($this->high >> $count) | (-$sign << $count));
$this->high &= 0xFFFFFFFF;
$this->low &= 0xFFFFFFFF;
return $this;
}
public function bitOr($var)
{
$this->high |= $var->high;
$this->low |= $var->low;
return $this;
}
public function bitXor($var)
{
$this->high ^= $var->high;
$this->low ^= $var->low;
return $this;
}
public function bitAnd($var)
{
$this->high &= $var->high;
$this->low &= $var->low;
return $this;
}
// Even: all zero; Odd: all one.
public function oddMask()
{
$low = (-($this->low & 1)) & 0xFFFFFFFF;
$high = $low;
return UInt64::newValue($high, $low);
}
public function toInteger()
{
if (PHP_INT_SIZE === 8) {
return ($this->high << 32) | $this->low;
} else {
return $this->low;
}
}
public function copy()
{
return static::newValue($this->high, $this->low);
}
}
class Uint64 extends GPBInteger
{
public static function newValue($high, $low)
{
$uint64 = new Uint64(0);
$uint64->high = $high;
$uint64->low = $low;
return $uint64;
}
protected function sign()
{
return 0;
}
}
class Int64 extends GPBInteger
{
public static function newValue($high, $low)
{
$int64 = new Int64(0);
$int64->high = $high;
$int64->low = $low;
return $int64;
}
protected function sign()
{
return 1;
}
}