diff options
Diffstat (limited to 'src/google/protobuf/compiler/javanano/javanano_message_field.cc')
-rw-r--r-- | src/google/protobuf/compiler/javanano/javanano_message_field.cc | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/src/google/protobuf/compiler/javanano/javanano_message_field.cc b/src/google/protobuf/compiler/javanano/javanano_message_field.cc new file mode 100644 index 00000000..6d89bd52 --- /dev/null +++ b/src/google/protobuf/compiler/javanano/javanano_message_field.cc @@ -0,0 +1,216 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// http://code.google.com/p/protobuf/ +// +// 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 <map> +#include <string> + +#include <google/protobuf/compiler/javanano/javanano_message_field.h> +#include <google/protobuf/compiler/javanano/javanano_helpers.h> +#include <google/protobuf/io/printer.h> +#include <google/protobuf/wire_format.h> +#include <google/protobuf/stubs/strutil.h> + +namespace google { +namespace protobuf { +namespace compiler { +namespace javanano { + +using internal::WireFormat; +using internal::WireFormatLite; + +namespace { + +// TODO(kenton): Factor out a "SetCommonFieldVariables()" to get rid of +// repeat code between this and the other field types. +void SetMessageVariables(const Params& params, + const FieldDescriptor* descriptor, map<string, string>* variables) { + (*variables)["name"] = + UnderscoresToCamelCase(descriptor); + (*variables)["capitalized_name"] = + UnderscoresToCapitalizedCamelCase(descriptor); + (*variables)["number"] = SimpleItoa(descriptor->number()); + (*variables)["type"] = ClassName(params, descriptor->message_type()); + (*variables)["group_or_message"] = + (descriptor->type() == FieldDescriptor::TYPE_GROUP) ? + "Group" : "Message"; + (*variables)["message_name"] = descriptor->containing_type()->name(); + //(*variables)["message_type"] = descriptor->message_type()->name(); + (*variables)["tag"] = SimpleItoa(WireFormat::MakeTag(descriptor)); +} + +} // namespace + +// =================================================================== + +MessageFieldGenerator:: +MessageFieldGenerator(const FieldDescriptor* descriptor, const Params& params) + : FieldGenerator(params), descriptor_(descriptor) { + SetMessageVariables(params, descriptor, &variables_); +} + +MessageFieldGenerator::~MessageFieldGenerator() {} + +void MessageFieldGenerator:: +GenerateMembers(io::Printer* printer) const { + printer->Print(variables_, + "public $type$ $name$ = null;\n"); +} + +void MessageFieldGenerator:: +GenerateMergingCode(io::Printer* printer) const { + printer->Print(variables_, + "if (other.$name$ != null) {\n" + " merge$capitalized_name$(other.$name$);\n" + "}\n"); +} + +void MessageFieldGenerator:: +GenerateParsingCode(io::Printer* printer) const { + printer->Print(variables_, + "$name$ = new $type$();\n"); + + if (descriptor_->type() == FieldDescriptor::TYPE_GROUP) { + printer->Print(variables_, + "input.readGroup($name$, $number$);\n"); + } else { + printer->Print(variables_, + "input.readMessage($name$);\n"); + } +} + +void MessageFieldGenerator:: +GenerateSerializationCode(io::Printer* printer) const { + printer->Print(variables_, + "if ($name$ != null) {\n" + " output.write$group_or_message$($number$, $name$);\n" + "}\n"); +} + +void MessageFieldGenerator:: +GenerateSerializedSizeCode(io::Printer* printer) const { + printer->Print(variables_, + "if ($name$ != null) {\n" + " size += com.google.protobuf.nano.CodedOutputByteBufferNano\n" + " .compute$group_or_message$Size($number$, $name$);\n" + "}\n"); +} + +string MessageFieldGenerator::GetBoxedType() const { + return ClassName(params_, descriptor_->message_type()); +} + +// =================================================================== + +RepeatedMessageFieldGenerator:: +RepeatedMessageFieldGenerator(const FieldDescriptor* descriptor, const Params& params) + : FieldGenerator(params), descriptor_(descriptor) { + SetMessageVariables(params, descriptor, &variables_); +} + +RepeatedMessageFieldGenerator::~RepeatedMessageFieldGenerator() {} + +void RepeatedMessageFieldGenerator:: +GenerateMembers(io::Printer* printer) const { + printer->Print(variables_, + "public $type$[] $name$ = $type$.EMPTY_ARRAY;\n"); +} + +void RepeatedMessageFieldGenerator:: +GenerateMergingCode(io::Printer* printer) const { + printer->Print(variables_, + "if (other.$name$.length > 0) {\n" + " $type$[] merged = java.util.Arrays.copyOf(result.$name$, result.$name$.length + other.$name$.length);\n" + " java.lang.System.arraycopy(other.$name$, 0, merged, results.$name$.length, other.$name$.length);\n" + " result.$name$ = merged;\n" + "}\n"); +} + +void RepeatedMessageFieldGenerator:: +GenerateParsingCode(io::Printer* printer) const { + // First, figure out the length of the array, then parse. + printer->Print(variables_, + "int arrayLength = com.google.protobuf.nano.WireFormatNano.getRepeatedFieldArrayLength(input, $tag$);\n" + "int i = $name$.length;\n" + "$name$ = java.util.Arrays.copyOf($name$, i + arrayLength);\n" + "for (; i < $name$.length - 1; i++) {\n" + " $name$[i] = new $type$();\n"); + + if (descriptor_->type() == FieldDescriptor::TYPE_GROUP) { + printer->Print(variables_, + " input.readGroup($name$[i], $number$);\n"); + } else { + printer->Print(variables_, + " input.readMessage($name$[i]);\n"); + } + + printer->Print(variables_, + " input.readTag();\n" + "}\n" + "// Last one without readTag.\n" + "$name$[i] = new $type$();\n"); + + if (descriptor_->type() == FieldDescriptor::TYPE_GROUP) { + printer->Print(variables_, + "input.readGroup($name$[i], $number$);\n"); + } else { + printer->Print(variables_, + "input.readMessage($name$[i]);\n"); + } +} + +void RepeatedMessageFieldGenerator:: +GenerateSerializationCode(io::Printer* printer) const { + printer->Print(variables_, + "for ($type$ element : $name$) {\n" + " output.write$group_or_message$($number$, element);\n" + "}\n"); +} + +void RepeatedMessageFieldGenerator:: +GenerateSerializedSizeCode(io::Printer* printer) const { + printer->Print(variables_, + "for ($type$ element : $name$) {\n" + " size += com.google.protobuf.nano.CodedOutputByteBufferNano\n" + " .compute$group_or_message$Size($number$, element);\n" + "}\n"); +} + +string RepeatedMessageFieldGenerator::GetBoxedType() const { + return ClassName(params_, descriptor_->message_type()); +} + +} // namespace javanano +} // namespace compiler +} // namespace protobuf +} // namespace google |