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 | 259 |
1 files changed, 259 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..a46081d0 --- /dev/null +++ b/src/google/protobuf/compiler/javanano/javanano_message_field.cc @@ -0,0 +1,259 @@ +// 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"] = + RenameJavaKeywords(UnderscoresToCamelCase(descriptor)); + (*variables)["capitalized_name"] = + RenameJavaKeywords(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, bool /* unused lazy_init */) const { + printer->Print(variables_, + "public $type$ $name$;\n"); +} + +void MessageFieldGenerator:: +GenerateClearCode(io::Printer* printer) const { + printer->Print(variables_, + "$name$ = null;\n"); +} + +void MessageFieldGenerator:: +GenerateMergingCode(io::Printer* printer) const { + printer->Print(variables_, + "if (this.$name$ == null) {\n" + " this.$name$ = new $type$();\n" + "}\n"); + + if (descriptor_->type() == FieldDescriptor::TYPE_GROUP) { + printer->Print(variables_, + "input.readGroup(this.$name$, $number$);\n"); + } else { + printer->Print(variables_, + "input.readMessage(this.$name$);\n"); + } +} + +void MessageFieldGenerator:: +GenerateSerializationCode(io::Printer* printer) const { + printer->Print(variables_, + "if (this.$name$ != null) {\n" + " output.write$group_or_message$($number$, this.$name$);\n" + "}\n"); +} + +void MessageFieldGenerator:: +GenerateSerializedSizeCode(io::Printer* printer) const { + printer->Print(variables_, + "if (this.$name$ != null) {\n" + " size += com.google.protobuf.nano.CodedOutputByteBufferNano\n" + " .compute$group_or_message$Size($number$, this.$name$);\n" + "}\n"); +} + +void MessageFieldGenerator:: +GenerateEqualsCode(io::Printer* printer) const { + printer->Print(variables_, + "if (this.$name$ == null) { \n" + " if (other.$name$ != null) {\n" + " return false;\n" + " }\n" + "} else {\n" + " if (!this.$name$.equals(other.$name$)) {\n" + " return false;\n" + " }\n" + "}\n"); +} + +void MessageFieldGenerator:: +GenerateHashCodeCode(io::Printer* printer) const { + printer->Print(variables_, + "result = 31 * result +\n" + " (this.$name$ == null ? 0 : this.$name$.hashCode());\n"); +} + +// =================================================================== + +RepeatedMessageFieldGenerator:: +RepeatedMessageFieldGenerator(const FieldDescriptor* descriptor, const Params& params) + : FieldGenerator(params), descriptor_(descriptor) { + SetMessageVariables(params, descriptor, &variables_); +} + +RepeatedMessageFieldGenerator::~RepeatedMessageFieldGenerator() {} + +void RepeatedMessageFieldGenerator:: +GenerateMembers(io::Printer* printer, bool /* unused lazy_init */) const { + printer->Print(variables_, + "public $type$[] $name$;\n"); +} + +void RepeatedMessageFieldGenerator:: +GenerateClearCode(io::Printer* printer) const { + printer->Print(variables_, + "$name$ = $type$.emptyArray();\n"); +} + +void RepeatedMessageFieldGenerator:: +GenerateMergingCode(io::Printer* printer) const { + // First, figure out the length of the array, then parse. + printer->Print(variables_, + "int arrayLength = com.google.protobuf.nano.WireFormatNano\n" + " .getRepeatedFieldArrayLength(input, $tag$);\n" + "int i = this.$name$ == null ? 0 : this.$name$.length;\n" + "$type$[] newArray =\n" + " new $type$[i + arrayLength];\n" + "if (i != 0) {\n" + " java.lang.System.arraycopy(this.$name$, 0, newArray, 0, i);\n" + "}\n" + "for (; i < newArray.length - 1; i++) {\n" + " newArray[i] = new $type$();\n"); + + if (descriptor_->type() == FieldDescriptor::TYPE_GROUP) { + printer->Print(variables_, + " input.readGroup(newArray[i], $number$);\n"); + } else { + printer->Print(variables_, + " input.readMessage(newArray[i]);\n"); + } + + printer->Print(variables_, + " input.readTag();\n" + "}\n" + "// Last one without readTag.\n" + "newArray[i] = new $type$();\n"); + + if (descriptor_->type() == FieldDescriptor::TYPE_GROUP) { + printer->Print(variables_, + "input.readGroup(newArray[i], $number$);\n"); + } else { + printer->Print(variables_, + "input.readMessage(newArray[i]);\n"); + } + + printer->Print(variables_, + "this.$name$ = newArray;\n"); +} + +void RepeatedMessageFieldGenerator:: +GenerateSerializationCode(io::Printer* printer) const { + printer->Print(variables_, + "if (this.$name$ != null && this.$name$.length > 0) {\n" + " for (int i = 0; i < this.$name$.length; i++) {\n" + " $type$ element = this.$name$[i];\n" + " if (element != null) {\n" + " output.write$group_or_message$($number$, element);\n" + " }\n" + " }\n" + "}\n"); +} + +void RepeatedMessageFieldGenerator:: +GenerateSerializedSizeCode(io::Printer* printer) const { + printer->Print(variables_, + "if (this.$name$ != null && this.$name$.length > 0) {\n" + " for (int i = 0; i < this.$name$.length; i++) {\n" + " $type$ element = this.$name$[i];\n" + " if (element != null) {\n" + " size += com.google.protobuf.nano.CodedOutputByteBufferNano\n" + " .compute$group_or_message$Size($number$, element);\n" + " }\n" + " }\n" + "}\n"); +} + +void RepeatedMessageFieldGenerator:: +GenerateEqualsCode(io::Printer* printer) const { + printer->Print(variables_, + "if (!com.google.protobuf.nano.InternalNano.equals(\n" + " this.$name$, other.$name$)) {\n" + " return false;\n" + "}\n"); +} + +void RepeatedMessageFieldGenerator:: +GenerateHashCodeCode(io::Printer* printer) const { + printer->Print(variables_, + "result = 31 * result\n" + " + com.google.protobuf.nano.InternalNano.hashCode(this.$name$);\n"); +} + +} // namespace javanano +} // namespace compiler +} // namespace protobuf +} // namespace google |