/src/protobuf/src/google/protobuf/compiler/java/java_enum.cc
C++ | 213 lines | 144 code | 27 blank | 42 comment | 12 complexity | fca995f20c628aa553a939f13c9f7dee MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.1, LGPL-2.0
- // 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/java/java_enum.h>
- #include <google/protobuf/compiler/java/java_helpers.h>
- #include <google/protobuf/io/printer.h>
- #include <google/protobuf/descriptor.pb.h>
- #include <google/protobuf/stubs/strutil.h>
- namespace google {
- namespace protobuf {
- namespace compiler {
- namespace java {
- EnumGenerator::EnumGenerator(const EnumDescriptor* descriptor)
- : descriptor_(descriptor) {
- for (int i = 0; i < descriptor_->value_count(); i++) {
- const EnumValueDescriptor* value = descriptor_->value(i);
- const EnumValueDescriptor* canonical_value =
- descriptor_->FindValueByNumber(value->number());
- if (value == canonical_value) {
- canonical_values_.push_back(value);
- } else {
- Alias alias;
- alias.value = value;
- alias.canonical_value = canonical_value;
- aliases_.push_back(alias);
- }
- }
- }
- EnumGenerator::~EnumGenerator() {}
- void EnumGenerator::Generate(io::Printer* printer) {
- bool is_own_file =
- descriptor_->containing_type() == NULL &&
- descriptor_->file()->options().java_multiple_files();
- printer->Print(
- "public $static$ enum $classname$\n"
- " implements com.google.protobuf.ProtocolMessageEnum {\n",
- "static", is_own_file ? "" : "static",
- "classname", descriptor_->name());
- printer->Indent();
- for (int i = 0; i < canonical_values_.size(); i++) {
- map<string, string> vars;
- vars["name"] = canonical_values_[i]->name();
- vars["index"] = SimpleItoa(canonical_values_[i]->index());
- vars["number"] = SimpleItoa(canonical_values_[i]->number());
- printer->Print(vars,
- "$name$($index$, $number$),\n");
- }
- printer->Print(
- ";\n"
- "\n");
- // -----------------------------------------------------------------
- for (int i = 0; i < aliases_.size(); i++) {
- map<string, string> vars;
- vars["classname"] = descriptor_->name();
- vars["name"] = aliases_[i].value->name();
- vars["canonical_name"] = aliases_[i].canonical_value->name();
- printer->Print(vars,
- "public static final $classname$ $name$ = $canonical_name$;\n");
- }
- // -----------------------------------------------------------------
- printer->Print(
- "\n"
- "public final int getNumber() { return value; }\n"
- "\n"
- "public static $classname$ valueOf(int value) {\n"
- " switch (value) {\n",
- "classname", descriptor_->name());
- printer->Indent();
- printer->Indent();
- for (int i = 0; i < canonical_values_.size(); i++) {
- printer->Print(
- "case $number$: return $name$;\n",
- "name", canonical_values_[i]->name(),
- "number", SimpleItoa(canonical_values_[i]->number()));
- }
- printer->Outdent();
- printer->Outdent();
- printer->Print(
- " default: return null;\n"
- " }\n"
- "}\n"
- "\n");
- // -----------------------------------------------------------------
- // Reflection
- printer->Print(
- "public final com.google.protobuf.Descriptors.EnumValueDescriptor\n"
- " getValueDescriptor() {\n"
- " return getDescriptor().getValues().get(index);\n"
- "}\n"
- "public final com.google.protobuf.Descriptors.EnumDescriptor\n"
- " getDescriptorForType() {\n"
- " return getDescriptor();\n"
- "}\n"
- "public static final com.google.protobuf.Descriptors.EnumDescriptor\n"
- " getDescriptor() {\n");
- // TODO(kenton): Cache statically? Note that we can't access descriptors
- // at module init time because it wouldn't work with descriptor.proto, but
- // we can cache the value the first time getDescriptor() is called.
- if (descriptor_->containing_type() == NULL) {
- printer->Print(
- " return $file$.getDescriptor().getEnumTypes().get($index$);\n",
- "file", ClassName(descriptor_->file()),
- "index", SimpleItoa(descriptor_->index()));
- } else {
- printer->Print(
- " return $parent$.getDescriptor().getEnumTypes().get($index$);\n",
- "parent", ClassName(descriptor_->containing_type()),
- "index", SimpleItoa(descriptor_->index()));
- }
- printer->Print(
- "}\n"
- "\n"
- "private static final $classname$[] VALUES = {\n"
- " ",
- "classname", descriptor_->name());
- for (int i = 0; i < descriptor_->value_count(); i++) {
- printer->Print("$name$, ",
- "name", descriptor_->value(i)->name());
- }
- printer->Print(
- "\n"
- "};\n"
- "public static $classname$ valueOf(\n"
- " com.google.protobuf.Descriptors.EnumValueDescriptor desc) {\n"
- " if (desc.getType() != getDescriptor()) {\n"
- " throw new java.lang.IllegalArgumentException(\n"
- " \"EnumValueDescriptor is not for this type.\");\n"
- " }\n"
- " return VALUES[desc.getIndex()];\n"
- "}\n",
- "classname", descriptor_->name());
- // -----------------------------------------------------------------
- printer->Print(
- "private final int index;\n"
- "private final int value;\n"
- "private $classname$(int index, int value) {\n"
- " this.index = index;\n"
- " this.value = value;\n"
- "}\n",
- "classname", descriptor_->name());
- // Force the static initialization code for the file to run, since it may
- // initialize static variables declared in this class.
- printer->Print(
- "\n"
- "static {\n"
- " $file$.getDescriptor();\n"
- "}\n",
- "file", ClassName(descriptor_->file()));
- printer->Outdent();
- printer->Print("}\n\n");
- }
- } // namespace java
- } // namespace compiler
- } // namespace protobuf
- } // namespace google