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-rw-r--r--src/ProtoGen/MessageGenerator.cs1349
1 files changed, 732 insertions, 617 deletions
diff --git a/src/ProtoGen/MessageGenerator.cs b/src/ProtoGen/MessageGenerator.cs
index 43b8b7eb..9eff86c4 100644
--- a/src/ProtoGen/MessageGenerator.cs
+++ b/src/ProtoGen/MessageGenerator.cs
@@ -1,617 +1,732 @@
-#region Copyright notice and license
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc. All rights reserved.
-// http://github.com/jskeet/dotnet-protobufs/
-// Original C++/Java/Python code:
-// 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.
-#endregion
-
-using System;
-using System.Collections.Generic;
-using Google.ProtocolBuffers.DescriptorProtos;
-using Google.ProtocolBuffers.Descriptors;
-using ExtensionRange = Google.ProtocolBuffers.DescriptorProtos.DescriptorProto.Types.ExtensionRange;
-
-namespace Google.ProtocolBuffers.ProtoGen {
- internal class MessageGenerator : SourceGeneratorBase<MessageDescriptor>, ISourceGenerator {
- internal MessageGenerator(MessageDescriptor descriptor) : base(descriptor) {
- }
-
- private string ClassName {
- get { return Descriptor.Name; }
- }
-
- private string FullClassName {
- get { return GetClassName(Descriptor); }
- }
-
- /// <summary>
- /// Get an identifier that uniquely identifies this type within the file.
- /// This is used to declare static variables related to this type at the
- /// outermost file scope.
- /// </summary>
- static string GetUniqueFileScopeIdentifier(IDescriptor descriptor) {
- return "static_" + descriptor.FullName.Replace(".", "_");
- }
-
- internal void GenerateStaticVariables(TextGenerator writer) {
- // Because descriptor.proto (Google.ProtocolBuffers.DescriptorProtos) is
- // used in the construction of descriptors, we have a tricky bootstrapping
- // problem. To help control static initialization order, we make sure all
- // descriptors and other static data that depends on them are members of
- // the proto-descriptor class. This way, they will be initialized in
- // a deterministic order.
-
- string identifier = GetUniqueFileScopeIdentifier(Descriptor);
-
- if (!UseLiteRuntime) {
- // The descriptor for this type.
- string access = Descriptor.File.CSharpOptions.NestClasses ? "private" : "internal";
- writer.WriteLine("{0} static pbd::MessageDescriptor internal__{1}__Descriptor;", access, identifier);
- writer.WriteLine("{0} static pb::FieldAccess.FieldAccessorTable<{1}, {1}.Builder> internal__{2}__FieldAccessorTable;",
- access, FullClassName, identifier);
- }
- // Generate static members for all nested types.
- foreach (MessageDescriptor nestedMessage in Descriptor.NestedTypes) {
- new MessageGenerator(nestedMessage).GenerateStaticVariables(writer);
- }
- }
-
- internal void GenerateStaticVariableInitializers(TextGenerator writer) {
- string identifier = GetUniqueFileScopeIdentifier(Descriptor);
-
- if (!UseLiteRuntime) {
- writer.Write("internal__{0}__Descriptor = ", identifier);
- if (Descriptor.ContainingType == null) {
- writer.WriteLine("Descriptor.MessageTypes[{0}];", Descriptor.Index);
- } else {
- writer.WriteLine("internal__{0}__Descriptor.NestedTypes[{1}];", GetUniqueFileScopeIdentifier(Descriptor.ContainingType), Descriptor.Index);
- }
-
- writer.WriteLine("internal__{0}__FieldAccessorTable = ", identifier);
- writer.WriteLine(" new pb::FieldAccess.FieldAccessorTable<{1}, {1}.Builder>(internal__{0}__Descriptor,",
- identifier, FullClassName);
- writer.Print(" new string[] { ");
- foreach (FieldDescriptor field in Descriptor.Fields) {
- writer.Write("\"{0}\", ", field.CSharpOptions.PropertyName);
- }
- writer.WriteLine("});");
- }
-
- // Generate static member initializers for all nested types.
- foreach (MessageDescriptor nestedMessage in Descriptor.NestedTypes) {
- new MessageGenerator(nestedMessage).GenerateStaticVariableInitializers(writer);
- }
-
- foreach (FieldDescriptor extension in Descriptor.Extensions) {
- new ExtensionGenerator(extension).GenerateStaticVariableInitializers(writer);
- }
- }
-
- public void Generate(TextGenerator writer) {
- writer.WriteLine("{0} sealed partial class {1} : pb::{2}Message{3}<{1}, {1}.Builder> {{",
- ClassAccessLevel, ClassName,
- Descriptor.Proto.ExtensionRangeCount > 0 ? "Extendable" : "Generated",
- RuntimeSuffix);
- writer.Indent();
- // Must call BuildPartial() to make sure all lists are made read-only
- writer.WriteLine("private static readonly {0} defaultInstance = new Builder().BuildPartial();", ClassName);
- writer.WriteLine("public static {0} DefaultInstance {{", ClassName);
- writer.WriteLine(" get { return defaultInstance; }");
- writer.WriteLine("}");
- writer.WriteLine();
- writer.WriteLine("public override {0} DefaultInstanceForType {{", ClassName);
- writer.WriteLine(" get { return defaultInstance; }");
- writer.WriteLine("}");
- writer.WriteLine();
- writer.WriteLine("protected override {0} ThisMessage {{", ClassName);
- writer.WriteLine(" get { return this; }");
- writer.WriteLine("}");
- writer.WriteLine();
- if (!UseLiteRuntime) {
- writer.WriteLine("public static pbd::MessageDescriptor Descriptor {");
- writer.WriteLine(" get {{ return {0}.internal__{1}__Descriptor; }}", DescriptorUtil.GetFullUmbrellaClassName(Descriptor),
- GetUniqueFileScopeIdentifier(Descriptor));
- writer.WriteLine("}");
- writer.WriteLine();
- writer.WriteLine("protected override pb::FieldAccess.FieldAccessorTable<{0}, {0}.Builder> InternalFieldAccessors {{", ClassName);
- writer.WriteLine(" get {{ return {0}.internal__{1}__FieldAccessorTable; }}", DescriptorUtil.GetFullUmbrellaClassName(Descriptor),
- GetUniqueFileScopeIdentifier(Descriptor));
- writer.WriteLine("}");
- writer.WriteLine();
- }
-
- // Extensions don't need to go in an extra nested type
- WriteChildren(writer, null, Descriptor.Extensions);
-
- if (Descriptor.EnumTypes.Count + Descriptor.NestedTypes.Count > 0) {
- writer.WriteLine("#region Nested types");
- writer.WriteLine("public static class Types {");
- writer.Indent();
- WriteChildren(writer, null, Descriptor.EnumTypes);
- WriteChildren(writer, null, Descriptor.NestedTypes);
- writer.Outdent();
- writer.WriteLine("}");
- writer.WriteLine("#endregion");
- writer.WriteLine();
- }
-
- foreach(FieldDescriptor fieldDescriptor in Descriptor.Fields) {
- // Rats: we lose the debug comment here :(
- writer.WriteLine("public const int {0} = {1};", GetFieldConstantName(fieldDescriptor), fieldDescriptor.FieldNumber);
- SourceGenerators.CreateFieldGenerator(fieldDescriptor).GenerateMembers(writer);
- writer.WriteLine();
- }
-
- if (OptimizeSpeed) {
- GenerateIsInitialized(writer);
- GenerateMessageSerializationMethods(writer);
- }
- if (UseLiteRuntime) {
- GenerateLiteRuntimeMethods(writer);
- }
-
- GenerateParseFromMethods(writer);
- GenerateBuilder(writer);
-
- // Force the static initialization code for the file to run, since it may
- // initialize static variables declared in this class.
- writer.WriteLine("static {0}() {{", ClassName);
- // We call object.ReferenceEquals() just to make it a valid statement on its own.
- // Another option would be GetType(), but that causes problems in DescriptorProtoFile,
- // where the bootstrapping is somewhat recursive - type initializers call
- // each other, effectively. We temporarily see Descriptor as null.
- writer.WriteLine(" object.ReferenceEquals({0}.Descriptor, null);", DescriptorUtil.GetFullUmbrellaClassName(Descriptor));
- writer.WriteLine("}");
-
- writer.Outdent();
- writer.WriteLine("}");
- writer.WriteLine();
- }
-
- private void GenerateLiteRuntimeMethods(TextGenerator writer) {
-
- bool callbase = Descriptor.Proto.ExtensionRangeCount > 0;
- writer.WriteLine("#region Lite runtime methods");
- writer.WriteLine("public override int GetHashCode() {");
- writer.Indent();
- writer.WriteLine("int hash = GetType().GetHashCode();");
- foreach (FieldDescriptor fieldDescriptor in Descriptor.Fields) {
- SourceGenerators.CreateFieldGenerator(fieldDescriptor).WriteHash(writer);
- }
- if (callbase) writer.WriteLine("hash ^= base.GetHashCode();");
- writer.WriteLine("return hash;");
- writer.Outdent();
- writer.WriteLine("}");
- writer.WriteLine();
-
- writer.WriteLine("public override bool Equals(object obj) {");
- writer.Indent();
- writer.WriteLine("{0} other = obj as {0};", ClassName);
- writer.WriteLine("if (other == null) return false;");
- foreach (FieldDescriptor fieldDescriptor in Descriptor.Fields) {
- SourceGenerators.CreateFieldGenerator(fieldDescriptor).WriteEquals(writer);
- }
- if (callbase) writer.WriteLine("if (!base.Equals(other)) return false;");
- writer.WriteLine("return true;");
- writer.Outdent();
- writer.WriteLine("}");
- writer.WriteLine();
-
- writer.WriteLine("public override void PrintTo(global::System.IO.TextWriter writer) {");
- writer.Indent();
- List<FieldDescriptor> sorted = new List<FieldDescriptor>(Descriptor.Fields);
- sorted.Sort(new Comparison<FieldDescriptor>(delegate(FieldDescriptor a, FieldDescriptor b) { return a.FieldNumber.CompareTo(b.FieldNumber); }));
- foreach (FieldDescriptor fieldDescriptor in sorted) {
- SourceGenerators.CreateFieldGenerator(fieldDescriptor).WriteToString(writer);
- }
- if (callbase) writer.WriteLine("base.PrintTo(writer);");
- writer.Outdent();
- writer.WriteLine("}");
- writer.WriteLine("#endregion");
- writer.WriteLine();
- }
-
- private void GenerateMessageSerializationMethods(TextGenerator writer) {
- List<FieldDescriptor> sortedFields = new List<FieldDescriptor>(Descriptor.Fields);
- sortedFields.Sort((f1, f2) => f1.FieldNumber.CompareTo(f2.FieldNumber));
-
- List<ExtensionRange> sortedExtensions = new List<ExtensionRange>(Descriptor.Proto.ExtensionRangeList);
- sortedExtensions.Sort((r1, r2) => (r1.Start.CompareTo(r2.Start)));
-
- writer.WriteLine("public override void WriteTo(pb::CodedOutputStream output) {");
- writer.Indent();
- // Make sure we've computed the serialized length, so that packed fields are generated correctly.
- writer.WriteLine("int size = SerializedSize;");
- if (Descriptor.Proto.ExtensionRangeList.Count > 0) {
- writer.WriteLine("pb::ExtendableMessage{1}<{0}, {0}.Builder>.ExtensionWriter extensionWriter = CreateExtensionWriter(this);",
- ClassName, RuntimeSuffix);
- }
-
- // Merge the fields and the extension ranges, both sorted by field number.
- for (int i = 0, j = 0; i < Descriptor.Fields.Count || j < sortedExtensions.Count; ) {
- if (i == Descriptor.Fields.Count) {
- GenerateSerializeOneExtensionRange(writer, sortedExtensions[j++]);
- } else if (j == sortedExtensions.Count) {
- GenerateSerializeOneField(writer, sortedFields[i++]);
- } else if (sortedFields[i].FieldNumber < sortedExtensions[j].Start) {
- GenerateSerializeOneField(writer, sortedFields[i++]);
- } else {
- GenerateSerializeOneExtensionRange(writer, sortedExtensions[j++]);
- }
- }
-
- if (!UseLiteRuntime) {
- if (Descriptor.Proto.Options.MessageSetWireFormat) {
- writer.WriteLine("UnknownFields.WriteAsMessageSetTo(output);");
- } else {
- writer.WriteLine("UnknownFields.WriteTo(output);");
- }
- }
-
- writer.Outdent();
- writer.WriteLine("}");
- writer.WriteLine();
- writer.WriteLine("private int memoizedSerializedSize = -1;");
- writer.WriteLine("public override int SerializedSize {");
- writer.Indent();
- writer.WriteLine("get {");
- writer.Indent();
- writer.WriteLine("int size = memoizedSerializedSize;");
- writer.WriteLine("if (size != -1) return size;");
- writer.WriteLine();
- writer.WriteLine("size = 0;");
- foreach (FieldDescriptor field in Descriptor.Fields) {
- SourceGenerators.CreateFieldGenerator(field).GenerateSerializedSizeCode(writer);
- }
- if (Descriptor.Proto.ExtensionRangeCount > 0) {
- writer.WriteLine("size += ExtensionsSerializedSize;");
- }
-
- if (!UseLiteRuntime) {
- if (Descriptor.Options.MessageSetWireFormat) {
- writer.WriteLine("size += UnknownFields.SerializedSizeAsMessageSet;");
- } else {
- writer.WriteLine("size += UnknownFields.SerializedSize;");
- }
- }
- writer.WriteLine("memoizedSerializedSize = size;");
- writer.WriteLine("return size;");
- writer.Outdent();
- writer.WriteLine("}");
- writer.Outdent();
- writer.WriteLine("}");
- writer.WriteLine();
- }
-
- private static void GenerateSerializeOneField(TextGenerator writer, FieldDescriptor fieldDescriptor) {
- SourceGenerators.CreateFieldGenerator(fieldDescriptor).GenerateSerializationCode(writer);
- }
-
- private static void GenerateSerializeOneExtensionRange(TextGenerator writer, ExtensionRange extensionRange) {
- writer.WriteLine("extensionWriter.WriteUntil({0}, output);", extensionRange.End);
- }
-
- private void GenerateParseFromMethods(TextGenerator writer) {
- // Note: These are separate from GenerateMessageSerializationMethods()
- // because they need to be generated even for messages that are optimized
- // for code size.
-
- writer.WriteLine("public static {0} ParseFrom(pb::ByteString data) {{", ClassName);
- writer.WriteLine(" return ((Builder) CreateBuilder().MergeFrom(data)).BuildParsed();");
- writer.WriteLine("}");
- writer.WriteLine("public static {0} ParseFrom(pb::ByteString data, pb::ExtensionRegistry extensionRegistry) {{", ClassName);
- writer.WriteLine(" return ((Builder) CreateBuilder().MergeFrom(data, extensionRegistry)).BuildParsed();");
- writer.WriteLine("}");
- writer.WriteLine("public static {0} ParseFrom(byte[] data) {{", ClassName);
- writer.WriteLine(" return ((Builder) CreateBuilder().MergeFrom(data)).BuildParsed();");
- writer.WriteLine("}");
- writer.WriteLine("public static {0} ParseFrom(byte[] data, pb::ExtensionRegistry extensionRegistry) {{", ClassName);
- writer.WriteLine(" return ((Builder) CreateBuilder().MergeFrom(data, extensionRegistry)).BuildParsed();");
- writer.WriteLine("}");
- writer.WriteLine("public static {0} ParseFrom(global::System.IO.Stream input) {{", ClassName);
- writer.WriteLine(" return ((Builder) CreateBuilder().MergeFrom(input)).BuildParsed();");
- writer.WriteLine("}");
- writer.WriteLine("public static {0} ParseFrom(global::System.IO.Stream input, pb::ExtensionRegistry extensionRegistry) {{", ClassName);
- writer.WriteLine(" return ((Builder) CreateBuilder().MergeFrom(input, extensionRegistry)).BuildParsed();");
- writer.WriteLine("}");
- writer.WriteLine("public static {0} ParseDelimitedFrom(global::System.IO.Stream input) {{", ClassName);
- writer.WriteLine(" return CreateBuilder().MergeDelimitedFrom(input).BuildParsed();");
- writer.WriteLine("}");
- writer.WriteLine("public static {0} ParseDelimitedFrom(global::System.IO.Stream input, pb::ExtensionRegistry extensionRegistry) {{", ClassName);
- writer.WriteLine(" return CreateBuilder().MergeDelimitedFrom(input, extensionRegistry).BuildParsed();");
- writer.WriteLine("}");
- writer.WriteLine("public static {0} ParseFrom(pb::CodedInputStream input) {{", ClassName);
- writer.WriteLine(" return ((Builder) CreateBuilder().MergeFrom(input)).BuildParsed();");
- writer.WriteLine("}");
- writer.WriteLine("public static {0} ParseFrom(pb::CodedInputStream input, pb::ExtensionRegistry extensionRegistry) {{", ClassName);
- writer.WriteLine(" return ((Builder) CreateBuilder().MergeFrom(input, extensionRegistry)).BuildParsed();");
- writer.WriteLine("}");
- }
-
- /// <summary>
- /// Returns whether or not the specified message type has any required fields.
- /// If it doesn't, calls to check for initialization can be optimised.
- /// TODO(jonskeet): Move this into MessageDescriptor?
- /// </summary>
- private static bool HasRequiredFields(MessageDescriptor descriptor, Dictionary<MessageDescriptor,object> alreadySeen) {
- if (alreadySeen.ContainsKey(descriptor)) {
- // The type is already in cache. This means that either:
- // a. The type has no required fields.
- // b. We are in the midst of checking if the type has required fields,
- // somewhere up the stack. In this case, we know that if the type
- // has any required fields, they'll be found when we return to it,
- // and the whole call to HasRequiredFields() will return true.
- // Therefore, we don't have to check if this type has required fields
- // here.
- return false;
- }
- alreadySeen[descriptor] = descriptor; // Value is irrelevant
-
- // If the type has extensions, an extension with message type could contain
- // required fields, so we have to be conservative and assume such an
- // extension exists.
- if (descriptor.Extensions.Count > 0) {
- return true;
- }
-
- foreach (FieldDescriptor field in descriptor.Fields) {
- if (field.IsRequired) {
- return true;
- }
- // Message or group
- if (field.MappedType == MappedType.Message) {
- if (HasRequiredFields(field.MessageType, alreadySeen)) {
- return true;
- }
- }
- }
- return false;
- }
-
- private void GenerateBuilder(TextGenerator writer) {
- writer.WriteLine("public static Builder CreateBuilder() { return new Builder(); }");
- writer.WriteLine("public override Builder ToBuilder() { return CreateBuilder(this); }");
- writer.WriteLine("public override Builder CreateBuilderForType() { return new Builder(); }");
- writer.WriteLine("public static Builder CreateBuilder({0} prototype) {{", ClassName);
- writer.WriteLine(" return (Builder) new Builder().MergeFrom(prototype);");
- writer.WriteLine("}");
- writer.WriteLine();
- writer.WriteLine("{0} sealed partial class Builder : pb::{2}Builder{3}<{1}, Builder> {{",
- ClassAccessLevel, ClassName, Descriptor.Proto.ExtensionRangeCount > 0 ? "Extendable" : "Generated", RuntimeSuffix);
- writer.Indent();
- writer.WriteLine("protected override Builder ThisBuilder {");
- writer.WriteLine(" get { return this; }");
- writer.WriteLine("}");
- GenerateCommonBuilderMethods(writer);
- if (OptimizeSpeed) {
- GenerateBuilderParsingMethods(writer);
- }
- foreach (FieldDescriptor field in Descriptor.Fields) {
- writer.WriteLine();
- // No field comment :(
- SourceGenerators.CreateFieldGenerator(field).GenerateBuilderMembers(writer);
- }
- writer.Outdent();
- writer.WriteLine("}");
- }
-
- private void GenerateCommonBuilderMethods(TextGenerator writer) {
- writer.WriteLine("{0} Builder() {{}}", ClassAccessLevel);
- writer.WriteLine();
- writer.WriteLine("{0} result = new {0}();", ClassName);
- writer.WriteLine();
- writer.WriteLine("protected override {0} MessageBeingBuilt {{", ClassName);
- writer.WriteLine(" get { return result; }");
- writer.WriteLine("}");
- writer.WriteLine();
- writer.WriteLine("public override Builder Clear() {");
- writer.WriteLine(" result = new {0}();", ClassName);
- writer.WriteLine(" return this;");
- writer.WriteLine("}");
- writer.WriteLine();
- writer.WriteLine("public override Builder Clone() {");
- writer.WriteLine(" return new Builder().MergeFrom(result);");
- writer.WriteLine("}");
- writer.WriteLine();
- if (!UseLiteRuntime) {
- writer.WriteLine("public override pbd::MessageDescriptor DescriptorForType {");
- writer.WriteLine(" get {{ return {0}.Descriptor; }}", FullClassName);
- writer.WriteLine("}");
- writer.WriteLine();
- }
- writer.WriteLine("public override {0} DefaultInstanceForType {{", ClassName);
- writer.WriteLine(" get {{ return {0}.DefaultInstance; }}", FullClassName);
- writer.WriteLine("}");
- writer.WriteLine();
-
- writer.WriteLine("public override {0} BuildPartial() {{", ClassName);
- writer.Indent();
- writer.WriteLine("if (result == null) {");
- writer.WriteLine(" throw new global::System.InvalidOperationException(\"build() has already been called on this Builder\");");
- writer.WriteLine("}");
- foreach (FieldDescriptor field in Descriptor.Fields) {
- SourceGenerators.CreateFieldGenerator(field).GenerateBuildingCode(writer);
- }
- writer.WriteLine("{0} returnMe = result;", ClassName);
- writer.WriteLine("result = null;");
- writer.WriteLine("return returnMe;");
- writer.Outdent();
- writer.WriteLine("}");
- writer.WriteLine();
-
- if (OptimizeSpeed) {
- writer.WriteLine("public override Builder MergeFrom(pb::IMessage{0} other) {{", RuntimeSuffix);
- writer.WriteLine(" if (other is {0}) {{", ClassName);
- writer.WriteLine(" return MergeFrom(({0}) other);", ClassName);
- writer.WriteLine(" } else {");
- writer.WriteLine(" base.MergeFrom(other);");
- writer.WriteLine(" return this;");
- writer.WriteLine(" }");
- writer.WriteLine("}");
- writer.WriteLine();
- writer.WriteLine("public override Builder MergeFrom({0} other) {{", ClassName);
- // Optimization: If other is the default instance, we know none of its
- // fields are set so we can skip the merge.
- writer.Indent();
- writer.WriteLine("if (other == {0}.DefaultInstance) return this;", FullClassName);
- foreach (FieldDescriptor field in Descriptor.Fields) {
- SourceGenerators.CreateFieldGenerator(field).GenerateMergingCode(writer);
- }
- // if message type has extensions
- if (Descriptor.Proto.ExtensionRangeCount > 0) {
- writer.WriteLine(" this.MergeExtensionFields(other);");
- }
- if (!UseLiteRuntime) {
- writer.WriteLine("this.MergeUnknownFields(other.UnknownFields);");
- }
- writer.WriteLine("return this;");
- writer.Outdent();
- writer.WriteLine("}");
- writer.WriteLine();
- }
- }
-
- private void GenerateBuilderParsingMethods(TextGenerator writer) {
- List<FieldDescriptor> sortedFields = new List<FieldDescriptor>(Descriptor.Fields);
- sortedFields.Sort((f1, f2) => f1.FieldNumber.CompareTo(f2.FieldNumber));
-
- writer.WriteLine("public override Builder MergeFrom(pb::CodedInputStream input) {");
- writer.WriteLine(" return MergeFrom(input, pb::ExtensionRegistry.Empty);");
- writer.WriteLine("}");
- writer.WriteLine();
- writer.WriteLine("public override Builder MergeFrom(pb::CodedInputStream input, pb::ExtensionRegistry extensionRegistry) {");
- writer.Indent();
- if (!UseLiteRuntime) {
- writer.WriteLine("pb::UnknownFieldSet.Builder unknownFields = null;");
- }
- writer.WriteLine("while (true) {");
- writer.Indent();
- writer.WriteLine("uint tag = input.ReadTag();");
- writer.WriteLine("switch (tag) {");
- writer.Indent();
- writer.WriteLine("case 0: {"); // 0 signals EOF / limit reached
- if (!UseLiteRuntime) {
- writer.WriteLine(" if (unknownFields != null) {");
- writer.WriteLine(" this.UnknownFields = unknownFields.Build();");
- writer.WriteLine(" }");
- }
- writer.WriteLine(" return this;");
- writer.WriteLine("}");
- writer.WriteLine("default: {");
- writer.WriteLine(" if (pb::WireFormat.IsEndGroupTag(tag)) {");
- if (!UseLiteRuntime) {
- writer.WriteLine(" if (unknownFields != null) {");
- writer.WriteLine(" this.UnknownFields = unknownFields.Build();");
- writer.WriteLine(" }");
- }
- writer.WriteLine(" return this;"); // it's an endgroup tag
- writer.WriteLine(" }");
- if (!UseLiteRuntime) {
- writer.WriteLine(" if (unknownFields == null) {"); // First unknown field - create builder now
- writer.WriteLine(" unknownFields = pb::UnknownFieldSet.CreateBuilder(this.UnknownFields);");
- writer.WriteLine(" }");
- }
- writer.WriteLine(" ParseUnknownField(input, {0}extensionRegistry, tag);", UseLiteRuntime ? "" : "unknownFields, ");
- writer.WriteLine(" break;");
- writer.WriteLine("}");
- foreach (FieldDescriptor field in sortedFields) {
- uint tag = WireFormat.MakeTag(field);
- writer.WriteLine("case {0}: {{", tag);
- writer.Indent();
- SourceGenerators.CreateFieldGenerator(field).GenerateParsingCode(writer);
- writer.WriteLine("break;");
- writer.Outdent();
- writer.WriteLine("}");
- }
- writer.Outdent();
- writer.WriteLine("}");
- writer.Outdent();
- writer.WriteLine("}");
- writer.Outdent();
- writer.WriteLine("}");
- writer.WriteLine();
- }
-
- private void GenerateIsInitialized(TextGenerator writer) {
- writer.WriteLine("public override bool IsInitialized {");
- writer.Indent();
- writer.WriteLine("get {");
- writer.Indent();
-
- // Check that all required fields in this message are set.
- // TODO(kenton): We can optimize this when we switch to putting all the
- // "has" fields into a single bitfield.
- foreach (FieldDescriptor field in Descriptor.Fields) {
- if (field.IsRequired) {
- writer.WriteLine("if (!has{0}) return false;", field.CSharpOptions.PropertyName);
- }
- }
-
- // Now check that all embedded messages are initialized.
- foreach (FieldDescriptor field in Descriptor.Fields) {
- if (field.FieldType != FieldType.Message ||
- !HasRequiredFields(field.MessageType, new Dictionary<MessageDescriptor, object>())) {
- continue;
- }
- string propertyName = NameHelpers.UnderscoresToPascalCase(GetFieldName(field));
- if (field.IsRepeated) {
- writer.WriteLine("foreach ({0} element in {1}List) {{", GetClassName(field.MessageType), propertyName);
- writer.WriteLine(" if (!element.IsInitialized) return false;");
- writer.WriteLine("}");
- } else if (field.IsOptional) {
- writer.WriteLine("if (Has{0}) {{", propertyName);
- writer.WriteLine(" if (!{0}.IsInitialized) return false;", propertyName);
- writer.WriteLine("}");
- } else {
- writer.WriteLine("if (!{0}.IsInitialized) return false;", propertyName);
- }
- }
-
- if (Descriptor.Proto.ExtensionRangeCount > 0) {
- writer.WriteLine("if (!ExtensionsAreInitialized) return false;");
- }
- writer.WriteLine("return true;");
- writer.Outdent();
- writer.WriteLine("}");
- writer.Outdent();
- writer.WriteLine("}");
- writer.WriteLine();
- }
-
- internal void GenerateExtensionRegistrationCode(TextGenerator writer) {
- foreach (FieldDescriptor extension in Descriptor.Extensions) {
- new ExtensionGenerator(extension).GenerateExtensionRegistrationCode(writer);
- }
- foreach (MessageDescriptor nestedMessage in Descriptor.NestedTypes) {
- new MessageGenerator(nestedMessage).GenerateExtensionRegistrationCode(writer);
- }
- }
- }
-}
+#region Copyright notice and license
+
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc. All rights reserved.
+// http://github.com/jskeet/dotnet-protobufs/
+// Original C++/Java/Python code:
+// 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.
+
+#endregion
+
+using System;
+using System.Collections.Generic;
+using Google.ProtocolBuffers.DescriptorProtos;
+using Google.ProtocolBuffers.Descriptors;
+using ExtensionRange = Google.ProtocolBuffers.DescriptorProtos.DescriptorProto.Types.ExtensionRange;
+
+namespace Google.ProtocolBuffers.ProtoGen
+{
+ internal class MessageGenerator : SourceGeneratorBase<MessageDescriptor>, ISourceGenerator
+ {
+ internal MessageGenerator(MessageDescriptor descriptor) : base(descriptor)
+ {
+ }
+
+ private string ClassName
+ {
+ get { return Descriptor.Name; }
+ }
+
+ private string FullClassName
+ {
+ get { return GetClassName(Descriptor); }
+ }
+
+ /// <summary>
+ /// Get an identifier that uniquely identifies this type within the file.
+ /// This is used to declare static variables related to this type at the
+ /// outermost file scope.
+ /// </summary>
+ private static string GetUniqueFileScopeIdentifier(IDescriptor descriptor)
+ {
+ return "static_" + descriptor.FullName.Replace(".", "_");
+ }
+
+ internal void GenerateStaticVariables(TextGenerator writer)
+ {
+ // Because descriptor.proto (Google.ProtocolBuffers.DescriptorProtos) is
+ // used in the construction of descriptors, we have a tricky bootstrapping
+ // problem. To help control static initialization order, we make sure all
+ // descriptors and other static data that depends on them are members of
+ // the proto-descriptor class. This way, they will be initialized in
+ // a deterministic order.
+
+ string identifier = GetUniqueFileScopeIdentifier(Descriptor);
+
+ if (!UseLiteRuntime)
+ {
+ // The descriptor for this type.
+ string access = Descriptor.File.CSharpOptions.NestClasses ? "private" : "internal";
+ writer.WriteLine("{0} static pbd::MessageDescriptor internal__{1}__Descriptor;", access, identifier);
+ writer.WriteLine(
+ "{0} static pb::FieldAccess.FieldAccessorTable<{1}, {1}.Builder> internal__{2}__FieldAccessorTable;",
+ access, FullClassName, identifier);
+ }
+ // Generate static members for all nested types.
+ foreach (MessageDescriptor nestedMessage in Descriptor.NestedTypes)
+ {
+ new MessageGenerator(nestedMessage).GenerateStaticVariables(writer);
+ }
+ }
+
+ internal void GenerateStaticVariableInitializers(TextGenerator writer)
+ {
+ string identifier = GetUniqueFileScopeIdentifier(Descriptor);
+
+ if (!UseLiteRuntime)
+ {
+ writer.Write("internal__{0}__Descriptor = ", identifier);
+ if (Descriptor.ContainingType == null)
+ {
+ writer.WriteLine("Descriptor.MessageTypes[{0}];", Descriptor.Index);
+ }
+ else
+ {
+ writer.WriteLine("internal__{0}__Descriptor.NestedTypes[{1}];",
+ GetUniqueFileScopeIdentifier(Descriptor.ContainingType), Descriptor.Index);
+ }
+
+ writer.WriteLine("internal__{0}__FieldAccessorTable = ", identifier);
+ writer.WriteLine(
+ " new pb::FieldAccess.FieldAccessorTable<{1}, {1}.Builder>(internal__{0}__Descriptor,",
+ identifier, FullClassName);
+ writer.Print(" new string[] { ");
+ foreach (FieldDescriptor field in Descriptor.Fields)
+ {
+ writer.Write("\"{0}\", ", field.CSharpOptions.PropertyName);
+ }
+ writer.WriteLine("});");
+ }
+
+ // Generate static member initializers for all nested types.
+ foreach (MessageDescriptor nestedMessage in Descriptor.NestedTypes)
+ {
+ new MessageGenerator(nestedMessage).GenerateStaticVariableInitializers(writer);
+ }
+
+ foreach (FieldDescriptor extension in Descriptor.Extensions)
+ {
+ new ExtensionGenerator(extension).GenerateStaticVariableInitializers(writer);
+ }
+ }
+
+ public void Generate(TextGenerator writer)
+ {
+ writer.WriteLine("{0} sealed partial class {1} : pb::{2}Message{3}<{1}, {1}.Builder> {{",
+ ClassAccessLevel, ClassName,
+ Descriptor.Proto.ExtensionRangeCount > 0 ? "Extendable" : "Generated",
+ RuntimeSuffix);
+ writer.Indent();
+ // Must call BuildPartial() to make sure all lists are made read-only
+ writer.WriteLine("private static readonly {0} defaultInstance = new Builder().BuildPartial();", ClassName);
+ writer.WriteLine("public static {0} DefaultInstance {{", ClassName);
+ writer.WriteLine(" get { return defaultInstance; }");
+ writer.WriteLine("}");
+ writer.WriteLine();
+ writer.WriteLine("public override {0} DefaultInstanceForType {{", ClassName);
+ writer.WriteLine(" get { return defaultInstance; }");
+ writer.WriteLine("}");
+ writer.WriteLine();
+ writer.WriteLine("protected override {0} ThisMessage {{", ClassName);
+ writer.WriteLine(" get { return this; }");
+ writer.WriteLine("}");
+ writer.WriteLine();
+ if (!UseLiteRuntime)
+ {
+ writer.WriteLine("public static pbd::MessageDescriptor Descriptor {");
+ writer.WriteLine(" get {{ return {0}.internal__{1}__Descriptor; }}",
+ DescriptorUtil.GetFullUmbrellaClassName(Descriptor),
+ GetUniqueFileScopeIdentifier(Descriptor));
+ writer.WriteLine("}");
+ writer.WriteLine();
+ writer.WriteLine(
+ "protected override pb::FieldAccess.FieldAccessorTable<{0}, {0}.Builder> InternalFieldAccessors {{",
+ ClassName);
+ writer.WriteLine(" get {{ return {0}.internal__{1}__FieldAccessorTable; }}",
+ DescriptorUtil.GetFullUmbrellaClassName(Descriptor),
+ GetUniqueFileScopeIdentifier(Descriptor));
+ writer.WriteLine("}");
+ writer.WriteLine();
+ }
+
+ // Extensions don't need to go in an extra nested type
+ WriteChildren(writer, null, Descriptor.Extensions);
+
+ if (Descriptor.EnumTypes.Count + Descriptor.NestedTypes.Count > 0)
+ {
+ writer.WriteLine("#region Nested types");
+ writer.WriteLine("public static class Types {");
+ writer.Indent();
+ WriteChildren(writer, null, Descriptor.EnumTypes);
+ WriteChildren(writer, null, Descriptor.NestedTypes);
+ writer.Outdent();
+ writer.WriteLine("}");
+ writer.WriteLine("#endregion");
+ writer.WriteLine();
+ }
+
+ foreach (FieldDescriptor fieldDescriptor in Descriptor.Fields)
+ {
+ // Rats: we lose the debug comment here :(
+ writer.WriteLine("public const int {0} = {1};", GetFieldConstantName(fieldDescriptor),
+ fieldDescriptor.FieldNumber);
+ SourceGenerators.CreateFieldGenerator(fieldDescriptor).GenerateMembers(writer);
+ writer.WriteLine();
+ }
+
+ if (OptimizeSpeed)
+ {
+ GenerateIsInitialized(writer);
+ GenerateMessageSerializationMethods(writer);
+ }
+ if (UseLiteRuntime)
+ {
+ GenerateLiteRuntimeMethods(writer);
+ }
+
+ GenerateParseFromMethods(writer);
+ GenerateBuilder(writer);
+
+ // Force the static initialization code for the file to run, since it may
+ // initialize static variables declared in this class.
+ writer.WriteLine("static {0}() {{", ClassName);
+ // We call object.ReferenceEquals() just to make it a valid statement on its own.
+ // Another option would be GetType(), but that causes problems in DescriptorProtoFile,
+ // where the bootstrapping is somewhat recursive - type initializers call
+ // each other, effectively. We temporarily see Descriptor as null.
+ writer.WriteLine(" object.ReferenceEquals({0}.Descriptor, null);",
+ DescriptorUtil.GetFullUmbrellaClassName(Descriptor));
+ writer.WriteLine("}");
+
+ writer.Outdent();
+ writer.WriteLine("}");
+ writer.WriteLine();
+ }
+
+ private void GenerateLiteRuntimeMethods(TextGenerator writer)
+ {
+ bool callbase = Descriptor.Proto.ExtensionRangeCount > 0;
+ writer.WriteLine("#region Lite runtime methods");
+ writer.WriteLine("public override int GetHashCode() {");
+ writer.Indent();
+ writer.WriteLine("int hash = GetType().GetHashCode();");
+ foreach (FieldDescriptor fieldDescriptor in Descriptor.Fields)
+ {
+ SourceGenerators.CreateFieldGenerator(fieldDescriptor).WriteHash(writer);
+ }
+ if (callbase) writer.WriteLine("hash ^= base.GetHashCode();");
+ writer.WriteLine("return hash;");
+ writer.Outdent();
+ writer.WriteLine("}");
+ writer.WriteLine();
+
+ writer.WriteLine("public override bool Equals(object obj) {");
+ writer.Indent();
+ writer.WriteLine("{0} other = obj as {0};", ClassName);
+ writer.WriteLine("if (other == null) return false;");
+ foreach (FieldDescriptor fieldDescriptor in Descriptor.Fields)
+ {
+ SourceGenerators.CreateFieldGenerator(fieldDescriptor).WriteEquals(writer);
+ }
+ if (callbase) writer.WriteLine("if (!base.Equals(other)) return false;");
+ writer.WriteLine("return true;");
+ writer.Outdent();
+ writer.WriteLine("}");
+ writer.WriteLine();
+
+ writer.WriteLine("public override void PrintTo(global::System.IO.TextWriter writer) {");
+ writer.Indent();
+ List<FieldDescriptor> sorted = new List<FieldDescriptor>(Descriptor.Fields);
+ sorted.Sort(
+ new Comparison<FieldDescriptor>(
+ delegate(FieldDescriptor a, FieldDescriptor b) { return a.FieldNumber.CompareTo(b.FieldNumber); }));
+ foreach (FieldDescriptor fieldDescriptor in sorted)
+ {
+ SourceGenerators.CreateFieldGenerator(fieldDescriptor).WriteToString(writer);
+ }
+ if (callbase) writer.WriteLine("base.PrintTo(writer);");
+ writer.Outdent();
+ writer.WriteLine("}");
+ writer.WriteLine("#endregion");
+ writer.WriteLine();
+ }
+
+ private void GenerateMessageSerializationMethods(TextGenerator writer)
+ {
+ List<FieldDescriptor> sortedFields = new List<FieldDescriptor>(Descriptor.Fields);
+ sortedFields.Sort((f1, f2) => f1.FieldNumber.CompareTo(f2.FieldNumber));
+
+ List<ExtensionRange> sortedExtensions = new List<ExtensionRange>(Descriptor.Proto.ExtensionRangeList);
+ sortedExtensions.Sort((r1, r2) => (r1.Start.CompareTo(r2.Start)));
+
+ writer.WriteLine("public override void WriteTo(pb::CodedOutputStream output) {");
+ writer.Indent();
+ // Make sure we've computed the serialized length, so that packed fields are generated correctly.
+ writer.WriteLine("int size = SerializedSize;");
+ if (Descriptor.Proto.ExtensionRangeList.Count > 0)
+ {
+ writer.WriteLine(
+ "pb::ExtendableMessage{1}<{0}, {0}.Builder>.ExtensionWriter extensionWriter = CreateExtensionWriter(this);",
+ ClassName, RuntimeSuffix);
+ }
+
+ // Merge the fields and the extension ranges, both sorted by field number.
+ for (int i = 0, j = 0; i < Descriptor.Fields.Count || j < sortedExtensions.Count;)
+ {
+ if (i == Descriptor.Fields.Count)
+ {
+ GenerateSerializeOneExtensionRange(writer, sortedExtensions[j++]);
+ }
+ else if (j == sortedExtensions.Count)
+ {
+ GenerateSerializeOneField(writer, sortedFields[i++]);
+ }
+ else if (sortedFields[i].FieldNumber < sortedExtensions[j].Start)
+ {
+ GenerateSerializeOneField(writer, sortedFields[i++]);
+ }
+ else
+ {
+ GenerateSerializeOneExtensionRange(writer, sortedExtensions[j++]);
+ }
+ }
+
+ if (!UseLiteRuntime)
+ {
+ if (Descriptor.Proto.Options.MessageSetWireFormat)
+ {
+ writer.WriteLine("UnknownFields.WriteAsMessageSetTo(output);");
+ }
+ else
+ {
+ writer.WriteLine("UnknownFields.WriteTo(output);");
+ }
+ }
+
+ writer.Outdent();
+ writer.WriteLine("}");
+ writer.WriteLine();
+ writer.WriteLine("private int memoizedSerializedSize = -1;");
+ writer.WriteLine("public override int SerializedSize {");
+ writer.Indent();
+ writer.WriteLine("get {");
+ writer.Indent();
+ writer.WriteLine("int size = memoizedSerializedSize;");
+ writer.WriteLine("if (size != -1) return size;");
+ writer.WriteLine();
+ writer.WriteLine("size = 0;");
+ foreach (FieldDescriptor field in Descriptor.Fields)
+ {
+ SourceGenerators.CreateFieldGenerator(field).GenerateSerializedSizeCode(writer);
+ }
+ if (Descriptor.Proto.ExtensionRangeCount > 0)
+ {
+ writer.WriteLine("size += ExtensionsSerializedSize;");
+ }
+
+ if (!UseLiteRuntime)
+ {
+ if (Descriptor.Options.MessageSetWireFormat)
+ {
+ writer.WriteLine("size += UnknownFields.SerializedSizeAsMessageSet;");
+ }
+ else
+ {
+ writer.WriteLine("size += UnknownFields.SerializedSize;");
+ }
+ }
+ writer.WriteLine("memoizedSerializedSize = size;");
+ writer.WriteLine("return size;");
+ writer.Outdent();
+ writer.WriteLine("}");
+ writer.Outdent();
+ writer.WriteLine("}");
+ writer.WriteLine();
+ }
+
+ private static void GenerateSerializeOneField(TextGenerator writer, FieldDescriptor fieldDescriptor)
+ {
+ SourceGenerators.CreateFieldGenerator(fieldDescriptor).GenerateSerializationCode(writer);
+ }
+
+ private static void GenerateSerializeOneExtensionRange(TextGenerator writer, ExtensionRange extensionRange)
+ {
+ writer.WriteLine("extensionWriter.WriteUntil({0}, output);", extensionRange.End);
+ }
+
+ private void GenerateParseFromMethods(TextGenerator writer)
+ {
+ // Note: These are separate from GenerateMessageSerializationMethods()
+ // because they need to be generated even for messages that are optimized
+ // for code size.
+
+ writer.WriteLine("public static {0} ParseFrom(pb::ByteString data) {{", ClassName);
+ writer.WriteLine(" return ((Builder) CreateBuilder().MergeFrom(data)).BuildParsed();");
+ writer.WriteLine("}");
+ writer.WriteLine(
+ "public static {0} ParseFrom(pb::ByteString data, pb::ExtensionRegistry extensionRegistry) {{",
+ ClassName);
+ writer.WriteLine(" return ((Builder) CreateBuilder().MergeFrom(data, extensionRegistry)).BuildParsed();");
+ writer.WriteLine("}");
+ writer.WriteLine("public static {0} ParseFrom(byte[] data) {{", ClassName);
+ writer.WriteLine(" return ((Builder) CreateBuilder().MergeFrom(data)).BuildParsed();");
+ writer.WriteLine("}");
+ writer.WriteLine("public static {0} ParseFrom(byte[] data, pb::ExtensionRegistry extensionRegistry) {{",
+ ClassName);
+ writer.WriteLine(" return ((Builder) CreateBuilder().MergeFrom(data, extensionRegistry)).BuildParsed();");
+ writer.WriteLine("}");
+ writer.WriteLine("public static {0} ParseFrom(global::System.IO.Stream input) {{", ClassName);
+ writer.WriteLine(" return ((Builder) CreateBuilder().MergeFrom(input)).BuildParsed();");
+ writer.WriteLine("}");
+ writer.WriteLine(
+ "public static {0} ParseFrom(global::System.IO.Stream input, pb::ExtensionRegistry extensionRegistry) {{",
+ ClassName);
+ writer.WriteLine(" return ((Builder) CreateBuilder().MergeFrom(input, extensionRegistry)).BuildParsed();");
+ writer.WriteLine("}");
+ writer.WriteLine("public static {0} ParseDelimitedFrom(global::System.IO.Stream input) {{", ClassName);
+ writer.WriteLine(" return CreateBuilder().MergeDelimitedFrom(input).BuildParsed();");
+ writer.WriteLine("}");
+ writer.WriteLine(
+ "public static {0} ParseDelimitedFrom(global::System.IO.Stream input, pb::ExtensionRegistry extensionRegistry) {{",
+ ClassName);
+ writer.WriteLine(" return CreateBuilder().MergeDelimitedFrom(input, extensionRegistry).BuildParsed();");
+ writer.WriteLine("}");
+ writer.WriteLine("public static {0} ParseFrom(pb::CodedInputStream input) {{", ClassName);
+ writer.WriteLine(" return ((Builder) CreateBuilder().MergeFrom(input)).BuildParsed();");
+ writer.WriteLine("}");
+ writer.WriteLine(
+ "public static {0} ParseFrom(pb::CodedInputStream input, pb::ExtensionRegistry extensionRegistry) {{",
+ ClassName);
+ writer.WriteLine(" return ((Builder) CreateBuilder().MergeFrom(input, extensionRegistry)).BuildParsed();");
+ writer.WriteLine("}");
+ }
+
+ /// <summary>
+ /// Returns whether or not the specified message type has any required fields.
+ /// If it doesn't, calls to check for initialization can be optimised.
+ /// TODO(jonskeet): Move this into MessageDescriptor?
+ /// </summary>
+ private static bool HasRequiredFields(MessageDescriptor descriptor,
+ Dictionary<MessageDescriptor, object> alreadySeen)
+ {
+ if (alreadySeen.ContainsKey(descriptor))
+ {
+ // The type is already in cache. This means that either:
+ // a. The type has no required fields.
+ // b. We are in the midst of checking if the type has required fields,
+ // somewhere up the stack. In this case, we know that if the type
+ // has any required fields, they'll be found when we return to it,
+ // and the whole call to HasRequiredFields() will return true.
+ // Therefore, we don't have to check if this type has required fields
+ // here.
+ return false;
+ }
+ alreadySeen[descriptor] = descriptor; // Value is irrelevant
+
+ // If the type has extensions, an extension with message type could contain
+ // required fields, so we have to be conservative and assume such an
+ // extension exists.
+ if (descriptor.Extensions.Count > 0)
+ {
+ return true;
+ }
+
+ foreach (FieldDescriptor field in descriptor.Fields)
+ {
+ if (field.IsRequired)
+ {
+ return true;
+ }
+ // Message or group
+ if (field.MappedType == MappedType.Message)
+ {
+ if (HasRequiredFields(field.MessageType, alreadySeen))
+ {
+ return true;
+ }
+ }
+ }
+ return false;
+ }
+
+ private void GenerateBuilder(TextGenerator writer)
+ {
+ writer.WriteLine("public static Builder CreateBuilder() { return new Builder(); }");
+ writer.WriteLine("public override Builder ToBuilder() { return CreateBuilder(this); }");
+ writer.WriteLine("public override Builder CreateBuilderForType() { return new Builder(); }");
+ writer.WriteLine("public static Builder CreateBuilder({0} prototype) {{", ClassName);
+ writer.WriteLine(" return (Builder) new Builder().MergeFrom(prototype);");
+ writer.WriteLine("}");
+ writer.WriteLine();
+ writer.WriteLine("{0} sealed partial class Builder : pb::{2}Builder{3}<{1}, Builder> {{",
+ ClassAccessLevel, ClassName,
+ Descriptor.Proto.ExtensionRangeCount > 0 ? "Extendable" : "Generated", RuntimeSuffix);
+ writer.Indent();
+ writer.WriteLine("protected override Builder ThisBuilder {");
+ writer.WriteLine(" get { return this; }");
+ writer.WriteLine("}");
+ GenerateCommonBuilderMethods(writer);
+ if (OptimizeSpeed)
+ {
+ GenerateBuilderParsingMethods(writer);
+ }
+ foreach (FieldDescriptor field in Descriptor.Fields)
+ {
+ writer.WriteLine();
+ // No field comment :(
+ SourceGenerators.CreateFieldGenerator(field).GenerateBuilderMembers(writer);
+ }
+ writer.Outdent();
+ writer.WriteLine("}");
+ }
+
+ private void GenerateCommonBuilderMethods(TextGenerator writer)
+ {
+ writer.WriteLine("{0} Builder() {{}}", ClassAccessLevel);
+ writer.WriteLine();
+ writer.WriteLine("{0} result = new {0}();", ClassName);
+ writer.WriteLine();
+ writer.WriteLine("protected override {0} MessageBeingBuilt {{", ClassName);
+ writer.WriteLine(" get { return result; }");
+ writer.WriteLine("}");
+ writer.WriteLine();
+ writer.WriteLine("public override Builder Clear() {");
+ writer.WriteLine(" result = new {0}();", ClassName);
+ writer.WriteLine(" return this;");
+ writer.WriteLine("}");
+ writer.WriteLine();
+ writer.WriteLine("public override Builder Clone() {");
+ writer.WriteLine(" return new Builder().MergeFrom(result);");
+ writer.WriteLine("}");
+ writer.WriteLine();
+ if (!UseLiteRuntime)
+ {
+ writer.WriteLine("public override pbd::MessageDescriptor DescriptorForType {");
+ writer.WriteLine(" get {{ return {0}.Descriptor; }}", FullClassName);
+ writer.WriteLine("}");
+ writer.WriteLine();
+ }
+ writer.WriteLine("public override {0} DefaultInstanceForType {{", ClassName);
+ writer.WriteLine(" get {{ return {0}.DefaultInstance; }}", FullClassName);
+ writer.WriteLine("}");
+ writer.WriteLine();
+
+ writer.WriteLine("public override {0} BuildPartial() {{", ClassName);
+ writer.Indent();
+ writer.WriteLine("if (result == null) {");
+ writer.WriteLine(
+ " throw new global::System.InvalidOperationException(\"build() has already been called on this Builder\");");
+ writer.WriteLine("}");
+ foreach (FieldDescriptor field in Descriptor.Fields)
+ {
+ SourceGenerators.CreateFieldGenerator(field).GenerateBuildingCode(writer);
+ }
+ writer.WriteLine("{0} returnMe = result;", ClassName);
+ writer.WriteLine("result = null;");
+ writer.WriteLine("return returnMe;");
+ writer.Outdent();
+ writer.WriteLine("}");
+ writer.WriteLine();
+
+ if (OptimizeSpeed)
+ {
+ writer.WriteLine("public override Builder MergeFrom(pb::IMessage{0} other) {{", RuntimeSuffix);
+ writer.WriteLine(" if (other is {0}) {{", ClassName);
+ writer.WriteLine(" return MergeFrom(({0}) other);", ClassName);
+ writer.WriteLine(" } else {");
+ writer.WriteLine(" base.MergeFrom(other);");
+ writer.WriteLine(" return this;");
+ writer.WriteLine(" }");
+ writer.WriteLine("}");
+ writer.WriteLine();
+ writer.WriteLine("public override Builder MergeFrom({0} other) {{", ClassName);
+ // Optimization: If other is the default instance, we know none of its
+ // fields are set so we can skip the merge.
+ writer.Indent();
+ writer.WriteLine("if (other == {0}.DefaultInstance) return this;", FullClassName);
+ foreach (FieldDescriptor field in Descriptor.Fields)
+ {
+ SourceGenerators.CreateFieldGenerator(field).GenerateMergingCode(writer);
+ }
+ // if message type has extensions
+ if (Descriptor.Proto.ExtensionRangeCount > 0)
+ {
+ writer.WriteLine(" this.MergeExtensionFields(other);");
+ }
+ if (!UseLiteRuntime)
+ {
+ writer.WriteLine("this.MergeUnknownFields(other.UnknownFields);");
+ }
+ writer.WriteLine("return this;");
+ writer.Outdent();
+ writer.WriteLine("}");
+ writer.WriteLine();
+ }
+ }
+
+ private void GenerateBuilderParsingMethods(TextGenerator writer)
+ {
+ List<FieldDescriptor> sortedFields = new List<FieldDescriptor>(Descriptor.Fields);
+ sortedFields.Sort((f1, f2) => f1.FieldNumber.CompareTo(f2.FieldNumber));
+
+ writer.WriteLine("public override Builder MergeFrom(pb::CodedInputStream input) {");
+ writer.WriteLine(" return MergeFrom(input, pb::ExtensionRegistry.Empty);");
+ writer.WriteLine("}");
+ writer.WriteLine();
+ writer.WriteLine(
+ "public override Builder MergeFrom(pb::CodedInputStream input, pb::ExtensionRegistry extensionRegistry) {");
+ writer.Indent();
+ if (!UseLiteRuntime)
+ {
+ writer.WriteLine("pb::UnknownFieldSet.Builder unknownFields = null;");
+ }
+ writer.WriteLine("while (true) {");
+ writer.Indent();
+ writer.WriteLine("uint tag = input.ReadTag();");
+ writer.WriteLine("switch (tag) {");
+ writer.Indent();
+ writer.WriteLine("case 0: {"); // 0 signals EOF / limit reached
+ if (!UseLiteRuntime)
+ {
+ writer.WriteLine(" if (unknownFields != null) {");
+ writer.WriteLine(" this.UnknownFields = unknownFields.Build();");
+ writer.WriteLine(" }");
+ }
+ writer.WriteLine(" return this;");
+ writer.WriteLine("}");
+ writer.WriteLine("default: {");
+ writer.WriteLine(" if (pb::WireFormat.IsEndGroupTag(tag)) {");
+ if (!UseLiteRuntime)
+ {
+ writer.WriteLine(" if (unknownFields != null) {");
+ writer.WriteLine(" this.UnknownFields = unknownFields.Build();");
+ writer.WriteLine(" }");
+ }
+ writer.WriteLine(" return this;"); // it's an endgroup tag
+ writer.WriteLine(" }");
+ if (!UseLiteRuntime)
+ {
+ writer.WriteLine(" if (unknownFields == null) {"); // First unknown field - create builder now
+ writer.WriteLine(" unknownFields = pb::UnknownFieldSet.CreateBuilder(this.UnknownFields);");
+ writer.WriteLine(" }");
+ }
+ writer.WriteLine(" ParseUnknownField(input, {0}extensionRegistry, tag);",
+ UseLiteRuntime ? "" : "unknownFields, ");
+ writer.WriteLine(" break;");
+ writer.WriteLine("}");
+ foreach (FieldDescriptor field in sortedFields)
+ {
+ uint tag = WireFormat.MakeTag(field);
+ writer.WriteLine("case {0}: {{", tag);
+ writer.Indent();
+ SourceGenerators.CreateFieldGenerator(field).GenerateParsingCode(writer);
+ writer.WriteLine("break;");
+ writer.Outdent();
+ writer.WriteLine("}");
+ }
+ writer.Outdent();
+ writer.WriteLine("}");
+ writer.Outdent();
+ writer.WriteLine("}");
+ writer.Outdent();
+ writer.WriteLine("}");
+ writer.WriteLine();
+ }
+
+ private void GenerateIsInitialized(TextGenerator writer)
+ {
+ writer.WriteLine("public override bool IsInitialized {");
+ writer.Indent();
+ writer.WriteLine("get {");
+ writer.Indent();
+
+ // Check that all required fields in this message are set.
+ // TODO(kenton): We can optimize this when we switch to putting all the
+ // "has" fields into a single bitfield.
+ foreach (FieldDescriptor field in Descriptor.Fields)
+ {
+ if (field.IsRequired)
+ {
+ writer.WriteLine("if (!has{0}) return false;", field.CSharpOptions.PropertyName);
+ }
+ }
+
+ // Now check that all embedded messages are initialized.
+ foreach (FieldDescriptor field in Descriptor.Fields)
+ {
+ if (field.FieldType != FieldType.Message ||
+ !HasRequiredFields(field.MessageType, new Dictionary<MessageDescriptor, object>()))
+ {
+ continue;
+ }
+ string propertyName = NameHelpers.UnderscoresToPascalCase(GetFieldName(field));
+ if (field.IsRepeated)
+ {
+ writer.WriteLine("foreach ({0} element in {1}List) {{", GetClassName(field.MessageType),
+ propertyName);
+ writer.WriteLine(" if (!element.IsInitialized) return false;");
+ writer.WriteLine("}");
+ }
+ else if (field.IsOptional)
+ {
+ writer.WriteLine("if (Has{0}) {{", propertyName);
+ writer.WriteLine(" if (!{0}.IsInitialized) return false;", propertyName);
+ writer.WriteLine("}");
+ }
+ else
+ {
+ writer.WriteLine("if (!{0}.IsInitialized) return false;", propertyName);
+ }
+ }
+
+ if (Descriptor.Proto.ExtensionRangeCount > 0)
+ {
+ writer.WriteLine("if (!ExtensionsAreInitialized) return false;");
+ }
+ writer.WriteLine("return true;");
+ writer.Outdent();
+ writer.WriteLine("}");
+ writer.Outdent();
+ writer.WriteLine("}");
+ writer.WriteLine();
+ }
+
+ internal void GenerateExtensionRegistrationCode(TextGenerator writer)
+ {
+ foreach (FieldDescriptor extension in Descriptor.Extensions)
+ {
+ new ExtensionGenerator(extension).GenerateExtensionRegistrationCode(writer);
+ }
+ foreach (MessageDescriptor nestedMessage in Descriptor.NestedTypes)
+ {
+ new MessageGenerator(nestedMessage).GenerateExtensionRegistrationCode(writer);
+ }
+ }
+ }
+} \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-23 01:06:13 +0000