Update //third_party/protobuf to version 3.

third_party/protobuf/src/google/protobuf/compiler/javanano/javanano_enum_field.cc

Index: third_party/protobuf/src/google/protobuf/compiler/javanano/javanano_enum_field.cc
diff --git a/third_party/protobuf/src/google/protobuf/compiler/javanano/javanano_enum_field.cc b/third_party/protobuf/src/google/protobuf/compiler/javanano/javanano_enum_field.cc
new file mode 100644
index 0000000000000000000000000000000000000000..7666db38a247b4a2193fc12ca852a2da29c6f22e
--- /dev/null
+++ b/third_party/protobuf/src/google/protobuf/compiler/javanano/javanano_enum_field.cc
@@ -0,0 +1,544 @@
+// 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_enum_field.h>
+#include <google/protobuf/stubs/common.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 {
+
+namespace {
+
+// TODO(kenton):  Factor out a "SetCommonFieldVariables()" to get rid of
+//   repeat code between this and the other field types.
+void SetEnumVariables(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());
+  if (params.use_reference_types_for_primitives()
+      && !params.reftypes_primitive_enums()
+      && !descriptor->is_repeated()) {
+    (*variables)["type"] = "java.lang.Integer";
+    (*variables)["default"] = "null";
+  } else {
+    (*variables)["type"] = "int";
+    (*variables)["default"] = DefaultValue(params, descriptor);
+  }
+  (*variables)["repeated_default"] =
+      "com.google.protobuf.nano.WireFormatNano.EMPTY_INT_ARRAY";
+  (*variables)["tag"] = SimpleItoa(internal::WireFormat::MakeTag(descriptor));
+  (*variables)["tag_size"] = SimpleItoa(
+      internal::WireFormat::TagSize(descriptor->number(), descriptor->type()));
+  (*variables)["non_packed_tag"] = SimpleItoa(
+      internal::WireFormatLite::MakeTag(descriptor->number(),
+          internal::WireFormat::WireTypeForFieldType(descriptor->type())));
+  (*variables)["message_name"] = descriptor->containing_type()->name();
+  const EnumDescriptor* enum_type = descriptor->enum_type();
+  (*variables)["message_type_intdef"] = "@"
+      + ToJavaName(params, enum_type->name(), true,
+          enum_type->containing_type(), enum_type->file());
+}
+
+void LoadEnumValues(const Params& params,
+    const EnumDescriptor* enum_descriptor, vector<string>* canonical_values) {
+  string enum_class_name = ClassName(params, enum_descriptor);
+  for (int i = 0; i < enum_descriptor->value_count(); i++) {
+    const EnumValueDescriptor* value = enum_descriptor->value(i);
+    const EnumValueDescriptor* canonical_value =
+        enum_descriptor->FindValueByNumber(value->number());
+    if (value == canonical_value) {
+      canonical_values->push_back(
+          enum_class_name + "." + RenameJavaKeywords(value->name()));
+    }
+  }
+}
+
+void PrintCaseLabels(
+    io::Printer* printer, const vector<string>& canonical_values) {
+  for (int i = 0; i < canonical_values.size(); i++) {
+    printer->Print(
+      "  case $value$:\n",
+      "value", canonical_values[i]);
+  }
+}
+
+}  // namespace
+
+// ===================================================================
+
+EnumFieldGenerator::
+EnumFieldGenerator(const FieldDescriptor* descriptor, const Params& params)
+  : FieldGenerator(params), descriptor_(descriptor) {
+  SetEnumVariables(params, descriptor, &variables_);
+  LoadEnumValues(params, descriptor->enum_type(), &canonical_values_);
+}
+
+EnumFieldGenerator::~EnumFieldGenerator() {}
+
+void EnumFieldGenerator::
+GenerateMembers(io::Printer* printer, bool /* unused lazy_init */) const {
+  if (params_.generate_intdefs()) {
+    printer->Print(variables_, "$message_type_intdef$\n");
+  }
+  printer->Print(variables_, "public $type$ $name$;\n");
+
+  if (params_.generate_has()) {
+    printer->Print(variables_,
+      "public boolean has$capitalized_name$;\n");
+  }
+}
+
+void EnumFieldGenerator::
+GenerateClearCode(io::Printer* printer) const {
+  printer->Print(variables_,
+    "$name$ = $default$;\n");
+
+  if (params_.generate_has()) {
+    printer->Print(variables_,
+      "has$capitalized_name$ = false;\n");
+  }
+}
+
+void EnumFieldGenerator::
+GenerateMergingCode(io::Printer* printer) const {
+  printer->Print(variables_,
+    "int value = input.readInt32();\n"
+    "switch (value) {\n");
+  PrintCaseLabels(printer, canonical_values_);
+  printer->Print(variables_,
+    "    this.$name$ = value;\n");
+  if (params_.generate_has()) {
+    printer->Print(variables_,
+      "    has$capitalized_name$ = true;\n");
+  }
+  printer->Print(
+    "    break;\n"
+    "}\n");
+  // No default case: in case of invalid value from the wire, preserve old
+  // field value. Also we are not storing the invalid value into the unknown
+  // fields, because there is no way to get the value out.
+}
+
+void EnumFieldGenerator::
+GenerateSerializationCode(io::Printer* printer) const {
+  if (descriptor_->is_required() && !params_.generate_has()) {
+    // Always serialize a required field if we don't have the 'has' signal.
+    printer->Print(variables_,
+      "output.writeInt32($number$, this.$name$);\n");
+  } else {
+    if (params_.generate_has()) {
+      printer->Print(variables_,
+        "if (this.$name$ != $default$ || has$capitalized_name$) {\n");
+    } else {
+      printer->Print(variables_,
+        "if (this.$name$ != $default$) {\n");
+    }
+    printer->Print(variables_,
+      "  output.writeInt32($number$, this.$name$);\n"
+      "}\n");
+  }
+}
+
+void EnumFieldGenerator::
+GenerateSerializedSizeCode(io::Printer* printer) const {
+  if (descriptor_->is_required() && !params_.generate_has()) {
+    printer->Print(variables_,
+      "size += com.google.protobuf.nano.CodedOutputByteBufferNano\n"
+      "  .computeInt32Size($number$, this.$name$);\n");
+  } else {
+    if (params_.generate_has()) {
+      printer->Print(variables_,
+        "if (this.$name$ != $default$ || has$capitalized_name$) {\n");
+    } else {
+      printer->Print(variables_,
+        "if (this.$name$ != $default$) {\n");
+    }
+    printer->Print(variables_,
+      "  size += com.google.protobuf.nano.CodedOutputByteBufferNano\n"
+      "    .computeInt32Size($number$, this.$name$);\n"
+      "}\n");
+  }
+}
+
+void EnumFieldGenerator::GenerateEqualsCode(io::Printer* printer) const {
+  if (params_.use_reference_types_for_primitives()
+        && !params_.reftypes_primitive_enums()) {
+    printer->Print(variables_,
+      "if (this.$name$ == null) {\n"
+      "  if (other.$name$ != null) {\n"
+      "    return false;\n"
+      "  }\n"
+      "} else if (!this.$name$.equals(other.$name$)) {\n"
+      "  return false;"
+      "}\n");
+  } else {
+    // We define equality as serialized form equality. If generate_has(),
+    // then if the field value equals the default value in both messages,
+    // but one's 'has' field is set and the other's is not, the serialized
+    // forms are different and we should return false.
+    printer->Print(variables_,
+      "if (this.$name$ != other.$name$");
+    if (params_.generate_has()) {
+      printer->Print(variables_,
+        "\n"
+        "    || (this.$name$ == $default$\n"
+        "        && this.has$capitalized_name$ != other.has$capitalized_name$)");
+    }
+    printer->Print(") {\n"
+      "  return false;\n"
+      "}\n");
+  }
+}
+
+void EnumFieldGenerator::GenerateHashCodeCode(io::Printer* printer) const {
+  printer->Print(
+    "result = 31 * result + ");
+  if (params_.use_reference_types_for_primitives()
+        && !params_.reftypes_primitive_enums()) {
+    printer->Print(variables_,
+      "(this.$name$ == null ? 0 : this.$name$)");
+  } else {
+    printer->Print(variables_,
+      "this.$name$");
+  }
+  printer->Print(";\n");
+}
+
+// ===================================================================
+
+AccessorEnumFieldGenerator::
+AccessorEnumFieldGenerator(const FieldDescriptor* descriptor,
+    const Params& params, int has_bit_index)
+  : FieldGenerator(params), descriptor_(descriptor) {
+  SetEnumVariables(params, descriptor, &variables_);
+  LoadEnumValues(params, descriptor->enum_type(), &canonical_values_);
+  SetBitOperationVariables("has", has_bit_index, &variables_);
+}
+
+AccessorEnumFieldGenerator::~AccessorEnumFieldGenerator() {}
+
+void AccessorEnumFieldGenerator::
+GenerateMembers(io::Printer* printer, bool /* unused lazy_init */) const {
+  printer->Print(variables_, "private int $name$_;\n");
+  if (params_.generate_intdefs()) {
+    printer->Print(variables_, "$message_type_intdef$\n");
+  }
+  printer->Print(variables_,
+    "public int get$capitalized_name$() {\n"
+    "  return $name$_;\n"
+    "}\n"
+    "public $message_name$ set$capitalized_name$(");
+  if (params_.generate_intdefs()) {
+    printer->Print(variables_,
+      "\n"
+      "    $message_type_intdef$ ");
+  }
+  printer->Print(variables_,
+    "int value) {\n"
+    "  $name$_ = value;\n"
+    "  $set_has$;\n"
+    "  return this;\n"
+    "}\n"
+    "public boolean has$capitalized_name$() {\n"
+    "  return $get_has$;\n"
+    "}\n"
+    "public $message_name$ clear$capitalized_name$() {\n"
+    "  $name$_ = $default$;\n"
+    "  $clear_has$;\n"
+    "  return this;\n"
+    "}\n");
+}
+
+void AccessorEnumFieldGenerator::
+GenerateClearCode(io::Printer* printer) const {
+  printer->Print(variables_,
+    "$name$_ = $default$;\n");
+}
+
+void AccessorEnumFieldGenerator::
+GenerateMergingCode(io::Printer* printer) const {
+  printer->Print(variables_,
+    "int value = input.readInt32();\n"
+    "switch (value) {\n");
+  PrintCaseLabels(printer, canonical_values_);
+  printer->Print(variables_,
+    "    $name$_ = value;\n"
+    "    $set_has$;\n"
+    "    break;\n"
+    "}\n");
+  // No default case: in case of invalid value from the wire, preserve old
+  // field value. Also we are not storing the invalid value into the unknown
+  // fields, because there is no way to get the value out.
+}
+
+void AccessorEnumFieldGenerator::
+GenerateSerializationCode(io::Printer* printer) const {
+  printer->Print(variables_,
+    "if ($get_has$) {\n"
+    "  output.writeInt32($number$, $name$_);\n"
+    "}\n");
+}
+
+void AccessorEnumFieldGenerator::
+GenerateSerializedSizeCode(io::Printer* printer) const {
+  printer->Print(variables_,
+    "if ($get_has$) {\n"
+    "  size += com.google.protobuf.nano.CodedOutputByteBufferNano\n"
+    "    .computeInt32Size($number$, $name$_);\n"
+    "}\n");
+}
+
+void AccessorEnumFieldGenerator::
+GenerateEqualsCode(io::Printer* printer) const {
+  printer->Print(variables_,
+    "if ($different_has$\n"
+    "    || $name$_ != other.$name$_) {\n"
+    "  return false;\n"
+    "}\n");
+}
+
+void AccessorEnumFieldGenerator::
+GenerateHashCodeCode(io::Printer* printer) const {
+  printer->Print(variables_,
+    "result = 31 * result + $name$_;\n");
+}
+
+// ===================================================================
+
+RepeatedEnumFieldGenerator::
+RepeatedEnumFieldGenerator(const FieldDescriptor* descriptor, const Params& params)
+  : FieldGenerator(params), descriptor_(descriptor) {
+  SetEnumVariables(params, descriptor, &variables_);
+  LoadEnumValues(params, descriptor->enum_type(), &canonical_values_);
+}
+
+RepeatedEnumFieldGenerator::~RepeatedEnumFieldGenerator() {}
+
+void RepeatedEnumFieldGenerator::
+GenerateMembers(io::Printer* printer, bool /* unused lazy_init */) const {
+  printer->Print(variables_,
+    "public $type$[] $name$;\n");
+}
+
+void RepeatedEnumFieldGenerator::
+GenerateClearCode(io::Printer* printer) const {
+  printer->Print(variables_,
+    "$name$ = $repeated_default$;\n");
+}
+
+void RepeatedEnumFieldGenerator::
+GenerateMergingCode(io::Printer* printer) const {
+  // First, figure out the maximum length of the array, then parse,
+  // and finally copy the valid values to the field.
+  printer->Print(variables_,
+    "int length = com.google.protobuf.nano.WireFormatNano\n"
+    "    .getRepeatedFieldArrayLength(input, $non_packed_tag$);\n"
+    "int[] validValues = new int[length];\n"
+    "int validCount = 0;\n"
+    "for (int i = 0; i < length; i++) {\n"
+    "  if (i != 0) { // tag for first value already consumed.\n"
+    "    input.readTag();\n"
+    "  }\n"
+    "  int value = input.readInt32();\n"
+    "  switch (value) {\n");
+  printer->Indent();
+  PrintCaseLabels(printer, canonical_values_);
+  printer->Outdent();
+  printer->Print(variables_,
+    "      validValues[validCount++] = value;\n"
+    "      break;\n"
+    "  }\n"
+    "}\n"
+    "if (validCount != 0) {\n"
+    "  int i = this.$name$ == null ? 0 : this.$name$.length;\n"
+    "  if (i == 0 && validCount == validValues.length) {\n"
+    "    this.$name$ = validValues;\n"
+    "  } else {\n"
+    "    int[] newArray = new int[i + validCount];\n"
+    "    if (i != 0) {\n"
+    "      java.lang.System.arraycopy(this.$name$, 0, newArray, 0, i);\n"
+    "    }\n"
+    "    java.lang.System.arraycopy(validValues, 0, newArray, i, validCount);\n"
+    "    this.$name$ = newArray;\n"
+    "  }\n"
+    "}\n");
+}
+
+void RepeatedEnumFieldGenerator::
+GenerateMergingCodeFromPacked(io::Printer* printer) const {
+  printer->Print(variables_,
+    "int bytes = input.readRawVarint32();\n"
+    "int limit = input.pushLimit(bytes);\n"
+    "// First pass to compute array length.\n"
+    "int arrayLength = 0;\n"
+    "int startPos = input.getPosition();\n"
+    "while (input.getBytesUntilLimit() > 0) {\n"
+    "  switch (input.readInt32()) {\n");
+  printer->Indent();
+  PrintCaseLabels(printer, canonical_values_);
+  printer->Outdent();
+  printer->Print(variables_,
+    "      arrayLength++;\n"
+    "      break;\n"
+    "  }\n"
+    "}\n"
+    "if (arrayLength != 0) {\n"
+    "  input.rewindToPosition(startPos);\n"
+    "  int i = this.$name$ == null ? 0 : this.$name$.length;\n"
+    "  int[] newArray = new int[i + arrayLength];\n"
+    "  if (i != 0) {\n"
+    "    java.lang.System.arraycopy(this.$name$, 0, newArray, 0, i);\n"
+    "  }\n"
+    "  while (input.getBytesUntilLimit() > 0) {\n"
+    "    int value = input.readInt32();\n"
+    "    switch (value) {\n");
+  printer->Indent();
+  printer->Indent();
+  PrintCaseLabels(printer, canonical_values_);
+  printer->Outdent();
+  printer->Outdent();
+  printer->Print(variables_,
+    "        newArray[i++] = value;\n"
+    "        break;\n"
+    "    }\n"
+    "  }\n"
+    "  this.$name$ = newArray;\n"
+    "}\n"
+    "input.popLimit(limit);\n");
+}
+
+void RepeatedEnumFieldGenerator::
+GenerateRepeatedDataSizeCode(io::Printer* printer) const {
+  // Creates a variable dataSize and puts the serialized size in there.
+  printer->Print(variables_,
+    "int dataSize = 0;\n"
+    "for (int i = 0; i < this.$name$.length; i++) {\n"
+    "  int element = this.$name$[i];\n"
+    "  dataSize += com.google.protobuf.nano.CodedOutputByteBufferNano\n"
+    "      .computeInt32SizeNoTag(element);\n"
+    "}\n");
+}
+
+void RepeatedEnumFieldGenerator::
+GenerateSerializationCode(io::Printer* printer) const {
+  printer->Print(variables_,
+    "if (this.$name$ != null && this.$name$.length > 0) {\n");
+  printer->Indent();
+
+  if (descriptor_->options().packed()) {
+    GenerateRepeatedDataSizeCode(printer);
+    printer->Print(variables_,
+      "output.writeRawVarint32($tag$);\n"
+      "output.writeRawVarint32(dataSize);\n"
+      "for (int i = 0; i < this.$name$.length; i++) {\n"
+      "  output.writeRawVarint32(this.$name$[i]);\n"
+      "}\n");
+  } else {
+    printer->Print(variables_,
+      "for (int i = 0; i < this.$name$.length; i++) {\n"
+      "  output.writeInt32($number$, this.$name$[i]);\n"
+      "}\n");
+  }
+
+  printer->Outdent();
+  printer->Print(variables_,
+    "}\n");
+}
+
+void RepeatedEnumFieldGenerator::
+GenerateSerializedSizeCode(io::Printer* printer) const {
+  printer->Print(variables_,
+    "if (this.$name$ != null && this.$name$.length > 0) {\n");
+  printer->Indent();
+
+  GenerateRepeatedDataSizeCode(printer);
+
+  printer->Print(
+    "size += dataSize;\n");
+  if (descriptor_->options().packed()) {
+    printer->Print(variables_,
+      "size += $tag_size$;\n"
+      "size += com.google.protobuf.nano.CodedOutputByteBufferNano\n"
+      "    .computeRawVarint32Size(dataSize);\n");
+  } else {
+    printer->Print(variables_,
+      "size += $tag_size$ * this.$name$.length;\n");
+  }
+
+  printer->Outdent();
+
+  printer->Print(
+    "}\n");
+}
+
+void RepeatedEnumFieldGenerator::
+GenerateFixClonedCode(io::Printer* printer) const {
+  printer->Print(variables_,
+    "if (this.$name$ != null && this.$name$.length > 0) {\n"
+    "  cloned.$name$ = this.$name$.clone();\n"
+    "}\n");
+}
+
+void RepeatedEnumFieldGenerator::
+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 RepeatedEnumFieldGenerator::
+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