Down-integrate from google3.

1 files changed, 226 insertions, 0 deletions

diff --git a/src/google/protobuf/compiler/java/java_enum_lite.cc b/src/google/protobuf/compiler/java/java_enum_lite.cc
index e69de29b..62186386 100644
--- a/src/google/protobuf/compiler/java/java_enum_lite.cc
+++ b/src/google/protobuf/compiler/java/java_enum_lite.cc
@@ -0,0 +1,226 @@
+// 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 <map>
+#include <string>
+
+#include <google/protobuf/compiler/java/java_context.h>
+#include <google/protobuf/compiler/java/java_enum_lite.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>
+#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 {
+
+namespace {
+bool EnumHasCustomOptions(const EnumDescriptor* descriptor) {
+  if (descriptor->options().unknown_fields().field_count() > 0) return true;
+  for (int i = 0; i < descriptor->value_count(); ++i) {
+    const EnumValueDescriptor* value = descriptor->value(i);
+    if (value->options().unknown_fields().field_count() > 0) return true;
+  }
+  return false;
+}
+}  // namespace
+
+EnumLiteGenerator::EnumLiteGenerator(const EnumDescriptor* descriptor,
+                             bool immutable_api,
+                             Context* context)
+  : descriptor_(descriptor), immutable_api_(immutable_api),
+    name_resolver_(context->GetNameResolver())  {
+  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);
+    }
+  }
+}
+
+EnumLiteGenerator::~EnumLiteGenerator() {}
+
+void EnumLiteGenerator::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]);
+    if (canonical_values_[i]->options().deprecated()) {
+      printer->Print("@java.lang.Deprecated\n");
+    }
+    printer->Print(vars,
+      "$name$($index$, $number$),\n");
+  }
+
+  if (SupportUnknownEnumValue(descriptor_->file())) {
+    printer->Print("UNRECOGNIZED(-1, -1),\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() {\n");
+  if (SupportUnknownEnumValue(descriptor_->file())) {
+    printer->Print(
+      "  if (index == -1) {\n"
+      "    throw new java.lang.IllegalArgumentException(\n"
+      "        \"Can't get the number of an unknown enum value.\");\n"
+      "  }\n");
+  }
+  printer->Print(
+    "  return value;\n"
+    "}\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 final com.google.protobuf.Internal.EnumLiteMap<\n"
+    "    $classname$> 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());
+
+  printer->Print(
+    "private final int value;\n\n"
+    "private $classname$(int index, int value) {\n",
+    "classname", descriptor_->name());
+  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 EnumLiteGenerator::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