Fix pure php implementation for 32-bit machine. (#2282)
Paul Yang
9 years ago
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GitHub
parent
58580da373
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51c5ff889c
17 changed files with 545 additions and 392 deletions
@ -1,175 +0,0 @@ |
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<?php |
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// Protocol Buffers - Google's data interchange format |
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// Copyright 2008 Google Inc. All rights reserved. |
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// https://developers.google.com/protocol-buffers/ |
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// |
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// Redistribution and use in source and binary forms, with or without |
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// modification, are permitted provided that the following conditions are |
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// met: |
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// |
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// * Redistributions of source code must retain the above copyright |
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// notice, this list of conditions and the following disclaimer. |
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// * Redistributions in binary form must reproduce the above |
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// copyright notice, this list of conditions and the following disclaimer |
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// in the documentation and/or other materials provided with the |
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// distribution. |
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// * Neither the name of Google Inc. nor the names of its |
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// contributors may be used to endorse or promote products derived from |
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// this software without specific prior written permission. |
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// |
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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namespace Google\Protobuf\Internal; |
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class GPBInteger |
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{ |
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public $high = 0; |
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public $low = 0; |
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public function __construct($value = 0) |
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{ |
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$this->low = $value & 0xFFFFFFFF; |
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if (PHP_INT_SIZE === 8) { |
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$this->high = ($value >> 32) & 0xFFFFFFFF; |
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} |
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} |
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// Return 0 for unsigned integers and 1 for signed integers. |
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protected function sign() |
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{ |
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trigger_error("Not implemented", E_ERROR); |
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} |
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public function leftShift($count) |
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{ |
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if ($count > 63) { |
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$this->low = 0; |
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$this->high = 0; |
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return; |
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} |
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if ($count > 32) { |
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$this->high = $this->low; |
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$this->low = 0; |
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$count -= 32; |
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} |
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$mask = (1 << $count) - 1; |
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$this->high = (($this->high << $count) & 0xFFFFFFFF) | |
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(($this->low >> (32 - $count)) & $mask); |
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$this->low = ($this->low << $count) & 0xFFFFFFFF; |
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$this->high &= 0xFFFFFFFF; |
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$this->low &= 0xFFFFFFFF; |
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return $this; |
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} |
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public function rightShift($count) |
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{ |
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$sign = (($this->high & 0x80000000) >> 31) & $this->sign(); |
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if ($count > 63) { |
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$this->low = -$sign; |
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$this->high = -$sign; |
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return; |
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} |
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if ($count > 32) { |
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$this->low = $this->high; |
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$this->high = -$sign; |
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$count -= 32; |
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} |
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$this->low = (($this->low >> $count) & 0xFFFFFFFF) | |
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(($this->high << (32 - $count)) & 0xFFFFFFFF); |
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$this->high = (($this->high >> $count) | (-$sign << $count)); |
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$this->high &= 0xFFFFFFFF; |
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$this->low &= 0xFFFFFFFF; |
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return $this; |
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} |
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public function bitOr($var) |
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{ |
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$this->high |= $var->high; |
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$this->low |= $var->low; |
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return $this; |
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} |
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public function bitXor($var) |
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{ |
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$this->high ^= $var->high; |
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$this->low ^= $var->low; |
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return $this; |
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} |
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public function bitAnd($var) |
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{ |
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$this->high &= $var->high; |
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$this->low &= $var->low; |
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return $this; |
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} |
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// Even: all zero; Odd: all one. |
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public function oddMask() |
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{ |
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$low = (-($this->low & 1)) & 0xFFFFFFFF; |
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$high = $low; |
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return UInt64::newValue($high, $low); |
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} |
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public function toInteger() |
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{ |
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if (PHP_INT_SIZE === 8) { |
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return ($this->high << 32) | $this->low; |
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} else { |
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return $this->low; |
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} |
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} |
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public function copy() |
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{ |
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return static::newValue($this->high, $this->low); |
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} |
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} |
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class Uint64 extends GPBInteger |
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{ |
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public static function newValue($high, $low) |
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{ |
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$uint64 = new Uint64(0); |
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$uint64->high = $high; |
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$uint64->low = $low; |
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return $uint64; |
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} |
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protected function sign() |
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{ |
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return 0; |
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} |
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} |
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class Int64 extends GPBInteger |
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{ |
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public static function newValue($high, $low) |
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{ |
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$int64 = new Int64(0); |
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$int64->high = $high; |
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$int64->low = $low; |
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return $int64; |
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} |
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protected function sign() |
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{ |
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return 1; |
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} |
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} |
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