third_party/protobuf: Update to HEAD (83d681ee2c)

third_party/protobuf/src/google/protobuf/compiler/php/php_generator.cc

Index: third_party/protobuf/src/google/protobuf/compiler/php/php_generator.cc
diff --git a/third_party/protobuf/src/google/protobuf/compiler/php/php_generator.cc b/third_party/protobuf/src/google/protobuf/compiler/php/php_generator.cc
new file mode 100644
index 0000000000000000000000000000000000000000..83e629b99744fec133323e008fd792dbcc5ee46b
--- /dev/null
+++ b/third_party/protobuf/src/google/protobuf/compiler/php/php_generator.cc
@@ -0,0 +1,795 @@
+// 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.
+
+#include <google/protobuf/compiler/php/php_generator.h>
+
+#include <google/protobuf/compiler/code_generator.h>
+#include <google/protobuf/compiler/plugin.h>
+#include <google/protobuf/descriptor.h>
+#include <google/protobuf/descriptor.pb.h>
+#include <google/protobuf/io/printer.h>
+#include <google/protobuf/io/zero_copy_stream.h>
+#include <google/protobuf/stubs/strutil.h>
+
+#include <sstream>
+
+using google::protobuf::internal::scoped_ptr;
+
+const std::string kDescriptorFile = "google/protobuf/descriptor.proto";
+const std::string kDescriptorPackageName = "Google\\Protobuf\\Internal";
+
+namespace google {
+namespace protobuf {
+namespace compiler {
+namespace php {
+
+// Forward decls.
+std::string PhpName(const std::string& full_name, bool is_descriptor);
+std::string DefaultForField(google::protobuf::FieldDescriptor* field);
+std::string IntToString(int32 value);
+std::string GeneratedFileName(const std::string& proto_file,
+                              bool is_descriptor);
+std::string LabelForField(google::protobuf::FieldDescriptor* field);
+std::string TypeName(google::protobuf::FieldDescriptor* field);
+std::string UnderscoresToCamelCase(const string& name, bool cap_first_letter);
+std::string EscapeDollor(const string& to_escape);
+std::string BinaryToHex(const string& binary);
+void GenerateMessage(const string& name_prefix,
+                     const google::protobuf::Descriptor* message,
+                     bool is_descriptor,
+                     google::protobuf::io::Printer* printer);
+void GenerateEnum(const google::protobuf::EnumDescriptor* en,
+                  google::protobuf::io::Printer* printer);
+void Indent(google::protobuf::io::Printer* printer);
+void Outdent(google::protobuf::io::Printer* printer);
+
+std::string MessagePrefix(const google::protobuf::Descriptor* message) {
+  // Empty cannot be php class name.
+  if (message->name() == "Empty" &&
+      message->file()->package() == "google.protobuf") {
+    return "GPB";
+  } else {
+    return "";
+  }
+}
+
+std::string MessageName(const google::protobuf::Descriptor* message,
+                        bool is_descriptor) {
+  string message_name = message->name();
+  const google::protobuf::Descriptor* descriptor = message->containing_type();
+  while (descriptor != NULL) {
+    message_name = descriptor->name() + '_' + message_name;
+    descriptor = descriptor->containing_type();
+  }
+  message_name = MessagePrefix(message) + message_name;
+
+  return PhpName(message->file()->package(), is_descriptor) + '\\' +
+         message_name;
+}
+
+std::string MessageFullName(const google::protobuf::Descriptor* message,
+                            bool is_descriptor) {
+  if (is_descriptor) {
+    return StringReplace(message->full_name(),
+                         "google.protobuf",
+                         "google.protobuf.internal", false);
+  } else {
+    return message->full_name();
+  }
+}
+
+std::string EnumFullName(const google::protobuf::EnumDescriptor* envm,
+                         bool is_descriptor) {
+  if (is_descriptor) {
+    return StringReplace(envm->full_name(),
+                         "google.protobuf",
+                         "google.protobuf.internal", false);
+  } else {
+    return envm->full_name();
+  }
+}
+
+std::string EnumClassName(const google::protobuf::EnumDescriptor* envm) {
+  string enum_class_name = envm->name();
+  const google::protobuf::Descriptor* descriptor = envm->containing_type();
+  while (descriptor != NULL) {
+    enum_class_name = descriptor->name() + '_' + enum_class_name;
+    descriptor = descriptor->containing_type();
+  }
+  return enum_class_name;
+}
+
+std::string EnumName(const google::protobuf::EnumDescriptor* envm,
+                     bool is_descriptor) {
+  string enum_name = EnumClassName(envm);
+  return PhpName(envm->file()->package(), is_descriptor) + '\\' + enum_name;
+}
+
+std::string PhpName(const std::string& full_name, bool is_descriptor) {
+  if (is_descriptor) {
+    return kDescriptorPackageName;
+  }
+
+  std::string result;
+  bool cap_next_letter = true;
+  for (int i = 0; i < full_name.size(); i++) {
+    if ('a' <= full_name[i] && full_name[i] <= 'z' && cap_next_letter) {
+      result += full_name[i] + ('A' - 'a');
+      cap_next_letter = false;
+    } else if (full_name[i] == '.') {
+      result += '\\';
+      cap_next_letter = true;
+    } else {
+      result += full_name[i];
+      cap_next_letter = false;
+    }
+  }
+  return result;
+}
+
+std::string DefaultForField(const google::protobuf::FieldDescriptor* field) {
+  switch (field->type()) {
+    case FieldDescriptor::TYPE_INT32:
+    case FieldDescriptor::TYPE_INT64:
+    case FieldDescriptor::TYPE_UINT32:
+    case FieldDescriptor::TYPE_UINT64:
+    case FieldDescriptor::TYPE_SINT32:
+    case FieldDescriptor::TYPE_SINT64:
+    case FieldDescriptor::TYPE_FIXED32:
+    case FieldDescriptor::TYPE_FIXED64:
+    case FieldDescriptor::TYPE_SFIXED32:
+    case FieldDescriptor::TYPE_SFIXED64:
+    case FieldDescriptor::TYPE_ENUM: return "0";
+    case FieldDescriptor::TYPE_DOUBLE:
+    case FieldDescriptor::TYPE_FLOAT: return "0.0";
+    case FieldDescriptor::TYPE_BOOL: return "false";
+    case FieldDescriptor::TYPE_STRING:
+    case FieldDescriptor::TYPE_BYTES: return "''";
+    case FieldDescriptor::TYPE_MESSAGE:
+    case FieldDescriptor::TYPE_GROUP: return "null";
+    default: assert(false); return "";
+  }
+}
+
+std::string GeneratedFileName(const std::string& proto_file,
+                              bool is_descriptor) {
+  if (is_descriptor) {
+    return "descriptor_internal.pb.php";
+  } else {
+    int lastindex = proto_file.find_last_of(".");
+    return proto_file.substr(0, lastindex) + ".pb.php";
+  }
+}
+
+std::string IntToString(int32 value) {
+  std::ostringstream os;
+  os << value;
+  return os.str();
+}
+
+std::string LabelForField(const google::protobuf::FieldDescriptor* field) {
+  switch (field->label()) {
+    case FieldDescriptor::LABEL_OPTIONAL: return "optional";
+    case FieldDescriptor::LABEL_REQUIRED: return "required";
+    case FieldDescriptor::LABEL_REPEATED: return "repeated";
+    default: assert(false); return "";
+  }
+}
+
+std::string TypeName(const google::protobuf::FieldDescriptor* field) {
+  switch (field->type()) {
+    case FieldDescriptor::TYPE_INT32: return "int32";
+    case FieldDescriptor::TYPE_INT64: return "int64";
+    case FieldDescriptor::TYPE_UINT32: return "uint32";
+    case FieldDescriptor::TYPE_UINT64: return "uint64";
+    case FieldDescriptor::TYPE_SINT32: return "sint32";
+    case FieldDescriptor::TYPE_SINT64: return "sint64";
+    case FieldDescriptor::TYPE_FIXED32: return "fixed32";
+    case FieldDescriptor::TYPE_FIXED64: return "fixed64";
+    case FieldDescriptor::TYPE_SFIXED32: return "sfixed32";
+    case FieldDescriptor::TYPE_SFIXED64: return "sfixed64";
+    case FieldDescriptor::TYPE_DOUBLE: return "double";
+    case FieldDescriptor::TYPE_FLOAT: return "float";
+    case FieldDescriptor::TYPE_BOOL: return "bool";
+    case FieldDescriptor::TYPE_ENUM: return "enum";
+    case FieldDescriptor::TYPE_STRING: return "string";
+    case FieldDescriptor::TYPE_BYTES: return "bytes";
+    case FieldDescriptor::TYPE_MESSAGE: return "message";
+    case FieldDescriptor::TYPE_GROUP: return "group";
+    default: assert(false); return "";
+  }
+}
+
+std::string EnumOrMessageSuffix(
+    const google::protobuf::FieldDescriptor* field, bool is_descriptor) {
+  if (field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
+    return ", '" + MessageFullName(field->message_type(), is_descriptor) + "'";
+  }
+  if (field->cpp_type() == FieldDescriptor::CPPTYPE_ENUM) {
+    return ", '" + EnumFullName(field->enum_type(), is_descriptor) + "'";
+  }
+  return "";
+}
+
+// Converts a name to camel-case. If cap_first_letter is true, capitalize the
+// first letter.
+std::string UnderscoresToCamelCase(const string& input, bool cap_first_letter) {
+  std::string result;
+  for (int i = 0; i < input.size(); i++) {
+    if ('a' <= input[i] && input[i] <= 'z') {
+      if (cap_first_letter) {
+        result += input[i] + ('A' - 'a');
+      } else {
+        result += input[i];
+      }
+      cap_first_letter = false;
+    } else if ('A' <= input[i] && input[i] <= 'Z') {
+      if (i == 0 && !cap_first_letter) {
+        // Force first letter to lower-case unless explicitly told to
+        // capitalize it.
+        result += input[i] + ('a' - 'A');
+      } else {
+        // Capital letters after the first are left as-is.
+        result += input[i];
+      }
+      cap_first_letter = false;
+    } else if ('0' <= input[i] && input[i] <= '9') {
+      result += input[i];
+      cap_first_letter = true;
+    } else {
+      cap_first_letter = true;
+    }
+  }
+  // Add a trailing "_" if the name should be altered.
+  if (input[input.size() - 1] == '#') {
+    result += '_';
+  }
+  return result;
+}
+
+std::string EscapeDollor(const string& to_escape) {
+  return StringReplace(to_escape, "$", "\\$", true);
+}
+
+std::string BinaryToHex(const string& src) {
+  string dest;
+  size_t i;
+  unsigned char symbol[16] = {
+    '0', '1', '2', '3',
+    '4', '5', '6', '7',
+    '8', '9', 'a', 'b',
+    'c', 'd', 'e', 'f',
+  };
+
+  dest.resize(src.size() * 2);
+  char* append_ptr = &dest[0];
+
+  for (i = 0; i < src.size(); i++) {
+    *append_ptr++ = symbol[(src[i] & 0xf0) >> 4];
+    *append_ptr++ = symbol[src[i] & 0x0f];
+  }
+
+  return dest;
+}
+
+void Indent(google::protobuf::io::Printer* printer) {
+  printer->Indent();
+  printer->Indent();
+}
+void Outdent(google::protobuf::io::Printer* printer) {
+  printer->Outdent();
+  printer->Outdent();
+}
+
+void GenerateField(const google::protobuf::FieldDescriptor* field,
+                   google::protobuf::io::Printer* printer, bool is_descriptor) {
+  if (field->is_repeated()) {
+    printer->Print(
+        "private $@name@;\n",
+        "name", field->name());
+  } else if (field->containing_oneof()) {
+    // Oneof fields are handled by GenerateOneofField.
+    return;
+  } else {
+    printer->Print(
+        "private $@name@ = @default@;\n",
+        "name", field->name(),
+        "default", DefaultForField(field));
+  }
+
+  if (is_descriptor) {
+    printer->Print(
+        "private $has_@name@ = false;\n",
+        "name", field->name());
+  }
+}
+
+void GenerateOneofField(const google::protobuf::OneofDescriptor* oneof,
+                        google::protobuf::io::Printer* printer) {
+  // Oneof property needs to be protected in order to be accessed by parent
+  // class in implementation.
+  printer->Print(
+      "protected $@name@;\n",
+      "name", oneof->name());
+}
+
+void GenerateFieldAccessor(const google::protobuf::FieldDescriptor* field,
+                           bool is_descriptor,
+                           google::protobuf::io::Printer* printer) {
+  const OneofDescriptor* oneof = field->containing_oneof();
+
+  // Generate getter.
+  if (oneof != NULL) {
+    printer->Print(
+        "public function get@camel_name@()\n"
+        "{\n"
+        "    return $this->readOneof(@number@);\n"
+        "}\n\n",
+        "camel_name", UnderscoresToCamelCase(field->name(), true),
+        "number", IntToString(field->number()));
+  } else {
+    printer->Print(
+        "public function get@camel_name@()\n"
+        "{\n"
+        "    return $this->@name@;\n"
+        "}\n\n",
+        "camel_name", UnderscoresToCamelCase(field->name(), true), "name",
+        field->name());
+  }
+
+  // Generate setter.
+  printer->Print(
+      "public function set@camel_name@(@var@)\n"
+      "{\n",
+      "camel_name", UnderscoresToCamelCase(field->name(), true),
+      "var", (field->is_repeated() ||
+              field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) ?
+             "&$var": "$var");
+
+  Indent(printer);
+
+  // Type check.
+  if (field->is_map()) {
+  } else if (field->is_repeated()) {
+    printer->Print(
+        "GPBUtil::checkRepeatedField($var, GPBType::@type@",
+        "type", ToUpper(field->type_name()));
+    if (field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
+      printer->Print(
+          ", \\@class_name@);\n",
+          "class_name",
+          MessageName(field->message_type(), is_descriptor) + "::class");
+    } else if (field->cpp_type() == FieldDescriptor::CPPTYPE_ENUM) {
+      printer->Print(
+          ", @class_name@);\n",
+          "class_name",
+          EnumName(field->enum_type(), is_descriptor) + "::class");
+    } else {
+      printer->Print(");\n");
+    }
+  } else if (field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
+    printer->Print(
+        "GPBUtil::checkMessage($var, \\@class_name@::class);\n",
+        "class_name", MessageName(field->message_type(), is_descriptor));
+  } else if (field->cpp_type() == FieldDescriptor::CPPTYPE_ENUM) {
+    printer->Print(
+        "GPBUtil::checkEnum($var, \\@class_name@::class);\n",
+        "class_name", EnumName(field->enum_type(), is_descriptor));
+  } else if (field->cpp_type() == FieldDescriptor::CPPTYPE_STRING) {
+    printer->Print(
+        "GPBUtil::checkString($var, @utf8@);\n",
+        "utf8",
+        field->type() == FieldDescriptor::TYPE_STRING ? "True": "False");
+  } else {
+    printer->Print(
+        "GPBUtil::check@type@($var);\n",
+        "type", UnderscoresToCamelCase(field->cpp_type_name(), true));
+  }
+
+  if (oneof != NULL) {
+    printer->Print(
+        "$this->writeOneof(@number@, $var);\n",
+        "number", IntToString(field->number()));
+  } else {
+    printer->Print(
+        "$this->@name@ = $var;\n",
+        "name", field->name());
+  }
+
+  // Set has bit for proto2 only.
+  if (is_descriptor) {
+    printer->Print(
+        "$this->has_@field_name@ = true;\n",
+        "field_name", field->name());
+  }
+
+  Outdent(printer);
+
+  printer->Print(
+      "}\n\n");
+
+  // Generate has method for proto2 only.
+  if (is_descriptor) {
+    printer->Print(
+        "public function has@camel_name@()\n"
+        "{\n"
+        "    return $this->has_@field_name@;\n"
+        "}\n\n",
+        "camel_name", UnderscoresToCamelCase(field->name(), true),
+        "field_name", field->name());
+  }
+}
+
+void GenerateRepeatedFieldDecode(
+    const google::protobuf::FieldDescriptor* field,
+    google::protobuf::io::Printer* printer) {
+  printer->Print(
+      "if ($input->read@cap_wire_type@($var)) return False;\n"
+      "$this->get@cap_field_name@() []= $var;\n",
+      "cap_field_name", UnderscoresToCamelCase(field->name(), true),
+      "cap_wire_type", UnderscoresToCamelCase(field->type_name(), true));
+}
+
+void GeneratePrimitiveFieldDecode(
+    const google::protobuf::FieldDescriptor* field,
+    google::protobuf::io::Printer* printer) {
+  printer->Print(
+      "if ($input->read@cap_wire_type@($var)) return False;\n"
+      "$this->set@cap_field_name@($var);\n",
+      "cap_field_name", UnderscoresToCamelCase(field->name(), true),
+      "cap_wire_type", UnderscoresToCamelCase(field->type_name(), true));
+}
+
+void GenerateFieldDecode(const google::protobuf::FieldDescriptor* field,
+                         google::protobuf::io::Printer* printer) {
+  printer->Print(
+      "case @number@:\n",
+      "number", IntToString(field->number()));
+  Indent(printer);
+
+  if (field->is_repeated()) {
+    GenerateRepeatedFieldDecode(field, printer);
+  } else {
+    GeneratePrimitiveFieldDecode(field, printer);
+  }
+
+  printer->Print(
+      "break;\n");
+  Outdent(printer);
+}
+
+void GenerateMessage(const string& name_prefix,
+                     const google::protobuf::Descriptor* message,
+                     bool is_descriptor,
+                     google::protobuf::io::Printer* printer) {
+  // Don't generate MapEntry messages -- we use the PHP extension's native
+  // support for map fields instead.
+  if (message->options().map_entry()) {
+    return;
+  }
+
+  string message_name =
+      name_prefix.empty()
+          ? message->name()
+          : name_prefix + "_" + MessagePrefix(message) + message->name();
+
+  printer->Print(
+      "class @name@ extends \\Google\\Protobuf\\Internal\\Message\n"
+      "{\n",
+      "name", message_name);
+  Indent(printer);
+
+  // Field and oneof definitions.
+  for (int i = 0; i < message->field_count(); i++) {
+    const FieldDescriptor* field = message->field(i);
+    GenerateField(field, printer, is_descriptor);
+  }
+  for (int i = 0; i < message->oneof_decl_count(); i++) {
+    const OneofDescriptor* oneof = message->oneof_decl(i);
+    GenerateOneofField(oneof, printer);
+  }
+  printer->Print("\n");
+
+  // Field and oneof accessors.
+  for (int i = 0; i < message->field_count(); i++) {
+    const FieldDescriptor* field = message->field(i);
+    GenerateFieldAccessor(field, is_descriptor, printer);
+  }
+  for (int i = 0; i < message->oneof_decl_count(); i++) {
+    const google::protobuf::OneofDescriptor* oneof = message->oneof_decl(i);
+    printer->Print(
+      "public function get@camel_name@()\n"
+      "{\n"
+      "    return $this->@name@;\n"
+      "}\n\n",
+      "camel_name", UnderscoresToCamelCase(oneof->name(), true), "name",
+      oneof->name());
+  }
+
+  Outdent(printer);
+  printer->Print("}\n\n");
+
+  // Nested messages and enums.
+  for (int i = 0; i < message->nested_type_count(); i++) {
+    GenerateMessage(message_name, message->nested_type(i), is_descriptor,
+                    printer);
+  }
+  for (int i = 0; i < message->enum_type_count(); i++) {
+    GenerateEnum(message->enum_type(i), printer);
+  }
+}
+
+void GenerateEnumToPool(const google::protobuf::EnumDescriptor* en,
+                        bool is_descriptor,
+                        google::protobuf::io::Printer* printer) {
+  printer->Print(
+      "$pool->addEnum('@name@', @class_name@::class)\n",
+      "name", EnumFullName(en, is_descriptor),
+      "class_name", en->name());
+  Indent(printer);
+
+  for (int i = 0; i < en->value_count(); i++) {
+    const EnumValueDescriptor* value = en->value(i);
+    printer->Print(
+        "->value(\"@name@\", @number@)\n",
+        "name", value->name(),
+        "number", IntToString(value->number()));
+  }
+  printer->Print("->finalizeToPool();\n\n");
+  Outdent(printer);
+}
+
+void GenerateMessageToPool(const string& name_prefix,
+                           const google::protobuf::Descriptor* message,
+                           bool is_descriptor,
+                           google::protobuf::io::Printer* printer) {
+  // Don't generate MapEntry messages -- we use the PHP extension's native
+  // support for map fields instead.
+  if (message->options().map_entry()) {
+    return;
+  }
+  string class_name = name_prefix.empty()?
+      message->name() : name_prefix + "_" + message->name();
+
+  printer->Print(
+      "$pool->addMessage('@message@', @class_name@::class)\n",
+      "message", MessageFullName(message, is_descriptor),
+      "class_name", class_name);
+
+  Indent(printer);
+
+  for (int i = 0; i < message->field_count(); i++) {
+    const FieldDescriptor* field = message->field(i);
+    if (field->is_map()) {
+      const FieldDescriptor* key =
+          field->message_type()->FindFieldByName("key");
+      const FieldDescriptor* val =
+          field->message_type()->FindFieldByName("value");
+      printer->Print(
+          "->map('@field@', GPBType::@key@, "
+          "GPBType::@value@, @number@@other@)\n",
+          "field", field->name(),
+          "key", ToUpper(key->type_name()),
+          "value", ToUpper(val->type_name()),
+          "number", SimpleItoa(field->number()),
+          "other", EnumOrMessageSuffix(val, is_descriptor));
+    } else if (!field->containing_oneof()) {
+      printer->Print(
+          "->@label@('@field@', GPBType::@type@, @number@@other@)\n",
+          "field", field->name(),
+          "label", LabelForField(field),
+          "type", ToUpper(field->type_name()),
+          "number", SimpleItoa(field->number()),
+          "other", EnumOrMessageSuffix(field, is_descriptor));
+    }
+  }
+
+  // oneofs.
+  for (int i = 0; i < message->oneof_decl_count(); i++) {
+    const OneofDescriptor* oneof = message->oneof_decl(i);
+    printer->Print("->oneof(@name@)\n",
+                   "name", oneof->name());
+    Indent(printer);
+    for (int index = 0; index < oneof->field_count(); index++) {
+      const FieldDescriptor* field = oneof->field(index);
+      printer->Print(
+          "->value('@field@', GPBType::@type@, @number@@other@)\n",
+          "field", field->name(),
+          "type", ToUpper(field->type_name()),
+          "number", SimpleItoa(field->number()),
+          "other", EnumOrMessageSuffix(field, is_descriptor));
+    }
+    printer->Print("->finish()\n");
+    Outdent(printer);
+  }
+
+  printer->Print(
+      "->finalizeToPool();\n");
+
+  Outdent(printer);
+
+  printer->Print(
+      "\n");
+
+  for (int i = 0; i < message->nested_type_count(); i++) {
+    GenerateMessageToPool(class_name, message->nested_type(i), is_descriptor,
+                          printer);
+  }
+  for (int i = 0; i < message->enum_type_count(); i++) {
+    GenerateEnumToPool(message->enum_type(i), is_descriptor, printer);
+  }
+}
+
+void GenerateAddFileToPool(const google::protobuf::FileDescriptor* file,
+                           bool is_descriptor,
+                           google::protobuf::io::Printer* printer) {
+  if (is_descriptor) {
+    printer->Print("$pool = DescriptorPool::getGeneratedPool();\n\n");
+
+    for (int i = 0; i < file->message_type_count(); i++) {
+      GenerateMessageToPool("", file->message_type(i), is_descriptor, printer);
+    }
+    for (int i = 0; i < file->enum_type_count(); i++) {
+      GenerateEnumToPool(file->enum_type(i), is_descriptor, printer);
+    }
+
+    printer->Print(
+        "$pool->finish();\n");
+  } else {
+    // Add messages and enums to descriptor pool.
+    printer->Print("$pool = DescriptorPool::getGeneratedPool();\n\n");
+
+    FileDescriptorSet files;
+    FileDescriptorProto* file_proto = files.add_file();
+    file->CopyTo(file_proto);
+    string files_data;
+    files.SerializeToString(&files_data);
+
+    printer->Print("$pool->internalAddGeneratedFile(hex2bin(\n");
+    Indent(printer);
+
+    // Only write 30 bytes per line.
+    static const int kBytesPerLine = 30;
+    for (int i = 0; i < files_data.size(); i += kBytesPerLine) {
+      printer->Print(
+          "\"@data@\"@dot@\n",
+          "data", BinaryToHex(files_data.substr(i, kBytesPerLine)),
+          "dot", i + kBytesPerLine < files_data.size() ? " ." : "");
+    }
+
+    Outdent(printer);
+    printer->Print(
+        "));\n\n");
+  }
+
+}
+
+void GenerateEnum(const google::protobuf::EnumDescriptor* en,
+                  google::protobuf::io::Printer* printer) {
+  printer->Print(
+      "class @name@\n"
+      "{\n",
+      "name", EnumClassName(en));
+  Indent(printer);
+
+  for (int i = 0; i < en->value_count(); i++) {
+    const EnumValueDescriptor* value = en->value(i);
+    printer->Print("const @name@ = @number@;\n",
+                   "name", value->name(),
+                   "number", IntToString(value->number()));
+  }
+  Outdent(printer);
+  printer->Print("}\n\n");
+}
+
+void GenerateUseDeclaration(bool is_descriptor,
+                            google::protobuf::io::Printer* printer) {
+  if (!is_descriptor) {
+    printer->Print(
+        "use Google\\Protobuf\\Internal\\DescriptorPool;\n"
+        "use Google\\Protobuf\\Internal\\GPBType;\n"
+        "use Google\\Protobuf\\Internal\\RepeatedField;\n"
+        "use Google\\Protobuf\\Internal\\GPBUtil;\n\n");
+  } else {
+    printer->Print(
+        "use Google\\Protobuf\\Internal\\DescriptorPool;\n"
+        "use Google\\Protobuf\\Internal\\GPBType;\n"
+        "use Google\\Protobuf\\Internal\\GPBWire;\n"
+        "use Google\\Protobuf\\Internal\\RepeatedField;\n"
+        "use Google\\Protobuf\\Internal\\InputStream;\n\n"
+        "use Google\\Protobuf\\Internal\\GPBUtil;\n\n");
+  }
+}
+
+void GenerateFile(const google::protobuf::FileDescriptor* file,
+                  bool is_descriptor, google::protobuf::io::Printer* printer) {
+  printer->Print(
+    "<?php\n"
+    "# Generated by the protocol buffer compiler.  DO NOT EDIT!\n"
+    "# source: @filename@\n"
+    "\n",
+    "filename", file->name());
+  if (!file->package().empty()) {
+    printer->Print("namespace @name@;\n\n",
+                   "name", PhpName(file->package(), is_descriptor));
+  }
+
+  for (int i = 0; i < file->dependency_count(); i++) {
+    const std::string& name = file->dependency(i)->name();
+    printer->Print("require_once('@name@');\n", "name",
+                   GeneratedFileName(name, is_descriptor));
+  }
+
+  GenerateUseDeclaration(is_descriptor, printer);
+
+  for (int i = 0; i < file->message_type_count(); i++) {
+    GenerateMessage("", file->message_type(i), is_descriptor, printer);
+  }
+  for (int i = 0; i < file->enum_type_count(); i++) {
+    GenerateEnum(file->enum_type(i), printer);
+  }
+
+  GenerateAddFileToPool(file, is_descriptor, printer);
+}
+
+bool Generator::Generate(
+    const FileDescriptor* file,
+    const string& parameter,
+    GeneratorContext* generator_context,
+    string* error) const {
+  bool is_descriptor = parameter == "internal";
+
+  if (is_descriptor && file->name() != kDescriptorFile) {
+    *error =
+        "Can only generate PHP code for google/protobuf/descriptor.proto.\n";
+    return false;
+  }
+
+  if (!is_descriptor && file->syntax() != FileDescriptor::SYNTAX_PROTO3) {
+    *error =
+        "Can only generate PHP code for proto3 .proto files.\n"
+        "Please add 'syntax = \"proto3\";' to the top of your .proto file.\n";
+    return false;
+  }
+
+  std::string filename = GeneratedFileName(file->name(), is_descriptor);
+  scoped_ptr<io::ZeroCopyOutputStream> output(
+      generator_context->Open(filename));
+  io::Printer printer(output.get(), '@');
+
+  GenerateFile(file, is_descriptor, &printer);
+
+  return true;
+}
+
+}  // namespace php
+}  // namespace compiler
+}  // namespace protobuf
+}  // namespace google