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// 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.
// Author: kenton@google.com (Kenton Varda)
// Based on original Protocol Buffers design by
// Sanjay Ghemawat, Jeff Dean, and others.
#include <google/protobuf/compiler/java/java_extension.h>
#include <google/protobuf/io/printer.h>
#include <google/protobuf/stubs/strutil.h>
#include <google/protobuf/compiler/java/java_context.h>
#include <google/protobuf/compiler/java/java_doc_comment.h>
#include <google/protobuf/compiler/java/java_helpers.h>
#include <google/protobuf/compiler/java/java_name_resolver.h>
namespace google {
namespace protobuf {
namespace compiler {
namespace java {
ImmutableExtensionGenerator::ImmutableExtensionGenerator(
const FieldDescriptor* descriptor, Context* context)
: descriptor_(descriptor), name_resolver_(context->GetNameResolver()) {
if (descriptor_->extension_scope() != NULL) {
scope_ =
name_resolver_->GetImmutableClassName(descriptor_->extension_scope());
} else {
scope_ = name_resolver_->GetImmutableClassName(descriptor_->file());
}
}
ImmutableExtensionGenerator::~ImmutableExtensionGenerator() {}
// Initializes the vars referenced in the generated code templates.
void ExtensionGenerator::InitTemplateVars(
const FieldDescriptor* descriptor, const TProtoStringType& scope, bool immutable,
ClassNameResolver* name_resolver,
std::map<TProtoStringType, TProtoStringType>* vars_pointer) {
std::map<TProtoStringType, TProtoStringType>& vars = *vars_pointer;
vars["scope"] = scope;
vars["name"] = UnderscoresToCamelCaseCheckReserved(descriptor);
vars["containing_type"] =
name_resolver->GetClassName(descriptor->containing_type(), immutable);
vars["number"] = StrCat(descriptor->number());
vars["constant_name"] = FieldConstantName(descriptor);
vars["index"] = StrCat(descriptor->index());
vars["default"] = descriptor->is_repeated()
? ""
: DefaultValue(descriptor, immutable, name_resolver);
vars["type_constant"] = FieldTypeName(GetType(descriptor));
vars["packed"] = descriptor->is_packed() ? "true" : "false";
vars["enum_map"] = "null";
vars["prototype"] = "null";
JavaType java_type = GetJavaType(descriptor);
TProtoStringType singular_type;
switch (java_type) {
case JAVATYPE_MESSAGE:
singular_type =
name_resolver->GetClassName(descriptor->message_type(), immutable);
vars["prototype"] = singular_type + ".getDefaultInstance()";
break;
case JAVATYPE_ENUM:
singular_type =
name_resolver->GetClassName(descriptor->enum_type(), immutable);
vars["enum_map"] = singular_type + ".internalGetValueMap()";
break;
case JAVATYPE_STRING:
singular_type = "java.lang.String";
break;
case JAVATYPE_BYTES:
singular_type = immutable ? "com.google.protobuf.ByteString" : "byte[]";
break;
default:
singular_type = BoxedPrimitiveTypeName(java_type);
break;
}
vars["type"] = descriptor->is_repeated()
? "java.util.List<" + singular_type + ">"
: singular_type;
vars["singular_type"] = singular_type;
}
void ImmutableExtensionGenerator::Generate(io::Printer* printer) {
std::map<TProtoStringType, TProtoStringType> vars;
const bool kUseImmutableNames = true;
InitTemplateVars(descriptor_, scope_, kUseImmutableNames, name_resolver_,
&vars);
printer->Print(vars, "public static final int $constant_name$ = $number$;\n");
WriteFieldDocComment(printer, descriptor_);
if (descriptor_->extension_scope() == NULL) {
// Non-nested
printer->Print(
vars,
"public static final\n"
" com.google.protobuf.GeneratedMessage.GeneratedExtension<\n"
" $containing_type$,\n"
" $type$> $name$ = com.google.protobuf.GeneratedMessage\n"
" .newFileScopedGeneratedExtension(\n"
" $singular_type$.class,\n"
" $prototype$);\n");
} else {
// Nested
printer->Print(
vars,
"public static final\n"
" com.google.protobuf.GeneratedMessage.GeneratedExtension<\n"
" $containing_type$,\n"
" $type$> $name$ = com.google.protobuf.GeneratedMessage\n"
" .newMessageScopedGeneratedExtension(\n"
" $scope$.getDefaultInstance(),\n"
" $index$,\n"
" $singular_type$.class,\n"
" $prototype$);\n");
}
printer->Annotate("name", descriptor_);
}
int ImmutableExtensionGenerator::GenerateNonNestedInitializationCode(
io::Printer* printer) {
int bytecode_estimate = 0;
if (descriptor_->extension_scope() == NULL) {
// Only applies to non-nested extensions.
printer->Print(
"$name$.internalInit(descriptor.getExtensions().get($index$));\n",
"name", UnderscoresToCamelCaseCheckReserved(descriptor_), "index",
StrCat(descriptor_->index()));
bytecode_estimate += 21;
}
return bytecode_estimate;
}
int ImmutableExtensionGenerator::GenerateRegistrationCode(
io::Printer* printer) {
printer->Print("registry.add($scope$.$name$);\n", "scope", scope_, "name",
UnderscoresToCamelCaseCheckReserved(descriptor_));
return 7;
}
} // namespace java
} // namespace compiler
} // namespace protobuf
} // namespace google
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