<?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;
use Google\Protobuf\Internal\Descriptor;
use Google\Protobuf\Internal\FileDescriptor;
use Google\Protobuf\Internal\FileDescriptorSet;
use Google\Protobuf\Internal\MessageBuilderContext;
use Google\Protobuf\Internal\EnumBuilderContext;
class DescriptorPool
{
private static $pool;
// Map from message names to sub-maps, which are maps from field numbers to
// field descriptors.
private $class_to_desc = [];
private $class_to_enum_desc = [];
private $proto_to_class = [];
public static function getGeneratedPool()
{
if (!isset(self::$pool)) {
self::$pool = new DescriptorPool();
}
return self::$pool;
}
public function internalAddGeneratedFile($data, $use_nested = false)
{
$files = new FileDescriptorSet();
$files->mergeFromString($data);
foreach($files->getFile() as $file_proto) {
$file = FileDescriptor::buildFromProto($file_proto);
foreach ($file->getMessageType() as $desc) {
$this->addDescriptor($desc);
}
unset($desc);
foreach ($file->getEnumType() as $desc) {
$this->addEnumDescriptor($desc);
}
unset($desc);
foreach ($file->getMessageType() as $desc) {
$this->crossLink($desc);
}
unset($desc);
}
}
public function addMessage($name, $klass)
{
return new MessageBuilderContext($name, $klass, $this);
}
public function addEnum($name, $klass)
{
return new EnumBuilderContext($name, $klass, $this);
}
public function addDescriptor($descriptor)
{
$this->proto_to_class[$descriptor->getFullName()] =
$descriptor->getClass();
$this->class_to_desc[$descriptor->getClass()] = $descriptor;
$this->class_to_desc[$descriptor->getLegacyClass()] = $descriptor;
foreach ($descriptor->getNestedType() as $nested_type) {
$this->addDescriptor($nested_type);
}
foreach ($descriptor->getEnumType() as $enum_type) {
$this->addEnumDescriptor($enum_type);
}
}
public function addEnumDescriptor($descriptor)
{
$this->proto_to_class[$descriptor->getFullName()] =
$descriptor->getClass();
$this->class_to_enum_desc[$descriptor->getClass()] = $descriptor;
$this->class_to_enum_desc[$descriptor->getLegacyClass()] = $descriptor;
}
public function getDescriptorByClassName($klass)
{
if (isset($this->class_to_desc[$klass])) {
return $this->class_to_desc[$klass];
} else {
return null;
}
}
public function getEnumDescriptorByClassName($klass)
{
if (isset($this->class_to_enum_desc[$klass])) {
return $this->class_to_enum_desc[$klass];
} else {
return null;
}
}
public function getDescriptorByProtoName($proto)
{
if (isset($this->proto_to_class[$proto])) {
$klass = $this->proto_to_class[$proto];
return $this->class_to_desc[$klass];
} else {
return null;
}
}
public function getEnumDescriptorByProtoName($proto)
{
$klass = $this->proto_to_class[$proto];
return $this->class_to_enum_desc[$klass];
}
private function crossLink(Descriptor $desc)
{
foreach ($desc->getField() as $field) {
switch ($field->getType()) {
case GPBType::MESSAGE:
$proto = $field->getMessageType();
if ($proto[0] == '.') {
$proto = substr($proto, 1);
}
$subdesc = $this->getDescriptorByProtoName($proto);
if (is_null($subdesc)) {
trigger_error(
'proto not added: ' . $proto
. " for " . $desc->getFullName(), E_USER_ERROR);
}
$field->setMessageType($subdesc);
break;
case GPBType::ENUM:
$proto = $field->getEnumType();
if ($proto[0] == '.') {
$proto = substr($proto, 1);
}
$field->setEnumType(
$this->getEnumDescriptorByProtoName($proto));
break;
default:
break;
}
}
unset($field);
foreach ($desc->getNestedType() as $nested_type) {
$this->crossLink($nested_type);
}
unset($nested_type);
}
public function finish()
{
foreach ($this->class_to_desc as $klass => $desc) {
$this->crossLink($desc);
}
unset($desc);
}
}