| // 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_doc_comment.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) { |
| WriteEnumDocComment(printer, descriptor_); |
| if (HasDescriptorMethods(descriptor_)) { |
| printer->Print( |
| "public enum $classname$\n" |
| " implements com.google.protobuf.ProtocolMessageEnum {\n", |
| "classname", descriptor_->name()); |
| } else { |
| printer->Print( |
| "public enum $classname$\n" |
| " implements com.google.protobuf.Internal.EnumLite {\n", |
| "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()); |
| WriteEnumValueDocComment(printer, canonical_values_[i]); |
| 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(); |
| WriteEnumValueDocComment(printer, aliases_[i].value); |
| printer->Print(vars, |
| "public static final $classname$ $name$ = $canonical_name$;\n"); |
| } |
| |
| for (int i = 0; i < descriptor_->value_count(); i++) { |
| map<string, string> vars; |
| vars["name"] = descriptor_->value(i)->name(); |
| vars["number"] = SimpleItoa(descriptor_->value(i)->number()); |
| WriteEnumValueDocComment(printer, descriptor_->value(i)); |
| printer->Print(vars, |
| "public static final int $name$_VALUE = $number$;\n"); |
| } |
| printer->Print("\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" |
| "public static com.google.protobuf.Internal.EnumLiteMap<$classname$>\n" |
| " internalGetValueMap() {\n" |
| " return internalValueMap;\n" |
| "}\n" |
| "private static com.google.protobuf.Internal.EnumLiteMap<$classname$>\n" |
| " internalValueMap =\n" |
| " new com.google.protobuf.Internal.EnumLiteMap<$classname$>() {\n" |
| " public $classname$ findValueByNumber(int number) {\n" |
| " return $classname$.valueOf(number);\n" |
| " }\n" |
| " };\n" |
| "\n", |
| "classname", descriptor_->name()); |
| |
| // ----------------------------------------------------------------- |
| // Reflection |
| |
| if (HasDescriptorMethods(descriptor_)) { |
| 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 = ", |
| "classname", descriptor_->name()); |
| |
| if (CanUseEnumValues()) { |
| // If the constants we are going to output are exactly the ones we |
| // have declared in the Java enum in the same order, then we can use |
| // the values() method that the Java compiler automatically generates |
| // for every enum. |
| printer->Print("values();\n"); |
| } else { |
| printer->Print( |
| "{\n" |
| " "); |
| for (int i = 0; i < descriptor_->value_count(); i++) { |
| printer->Print("$name$, ", |
| "name", descriptor_->value(i)->name()); |
| } |
| printer->Print( |
| "\n" |
| "};\n"); |
| } |
| |
| printer->Print( |
| "\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" |
| "\n", |
| "classname", descriptor_->name()); |
| |
| // index is only used for reflection; lite implementation does not need it |
| printer->Print("private final int index;\n"); |
| } |
| |
| // ----------------------------------------------------------------- |
| |
| printer->Print( |
| "private final int value;\n\n" |
| "private $classname$(int index, int value) {\n", |
| "classname", descriptor_->name()); |
| if (HasDescriptorMethods(descriptor_)) { |
| printer->Print(" this.index = index;\n"); |
| } |
| printer->Print( |
| " this.value = value;\n" |
| "}\n"); |
| |
| printer->Print( |
| "\n" |
| "// @@protoc_insertion_point(enum_scope:$full_name$)\n", |
| "full_name", descriptor_->full_name()); |
| |
| printer->Outdent(); |
| printer->Print("}\n\n"); |
| } |
| |
| bool EnumGenerator::CanUseEnumValues() { |
| if (canonical_values_.size() != descriptor_->value_count()) { |
| return false; |
| } |
| for (int i = 0; i < descriptor_->value_count(); i++) { |
| if (descriptor_->value(i)->name() != canonical_values_[i]->name()) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| } // namespace java |
| } // namespace compiler |
| } // namespace protobuf |
| } // namespace google |
