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using Google.ProtocolBuffers.Descriptors;
namespace Google.ProtocolBuffers.ProtoGen {
internal class MessageFieldGenerator : FieldGeneratorBase, IFieldSourceGenerator {
internal MessageFieldGenerator(FieldDescriptor descriptor)
: base(descriptor) {
}
public void GenerateMembers(TextGenerator writer) {
writer.WriteLine("private bool has{0};", CapitalizedName);
writer.WriteLine("private {0} {1}_ = {2};", TypeName, Name, DefaultValue);
writer.WriteLine("public bool Has{0} {{", CapitalizedName);
writer.WriteLine(" get {{ return has{0}; }}", CapitalizedName);
writer.WriteLine("}");
writer.WriteLine("public {0} {1} {{", TypeName, CapitalizedName);
writer.WriteLine(" get {{ return {0}_; }}", Name);
writer.WriteLine("}");
}
public void GenerateBuilderMembers(TextGenerator writer) {
writer.WriteLine("public bool Has{0} {{", CapitalizedName);
writer.WriteLine(" get {{ return result.Has{0}; }}", CapitalizedName);
writer.WriteLine("}");
writer.WriteLine("public {0} {1} {{", TypeName, CapitalizedName);
writer.WriteLine(" get {{ return result.{0}; }}", CapitalizedName);
writer.WriteLine(" set {{ Set{0}(value); }}", CapitalizedName);
writer.WriteLine("}");
writer.WriteLine("public Builder Set{0}({1} value) {{", CapitalizedName, TypeName);
writer.WriteLine(" result.has{0} = true;", CapitalizedName);
writer.WriteLine(" result.{0}_ = value;", Name);
writer.WriteLine(" return this;");
writer.WriteLine("}");
writer.WriteLine("public Builder Set{0}({1}.Builder builderForValue) {{", CapitalizedName, TypeName);
writer.WriteLine(" result.has{0} = true;", CapitalizedName);
writer.WriteLine(" result.{0}_ = builderForValue.Build();", Name);
writer.WriteLine(" return this;");
writer.WriteLine("}");
writer.WriteLine("public Builder Merge{0}({1} value) {{", CapitalizedName, TypeName);
writer.WriteLine(" if (result.Has{0} &&", CapitalizedName);
writer.WriteLine(" result.{0}_ != {1}) {{", Name, DefaultValue);
writer.WriteLine(" result.{0}_ = {1}.CreateBuilder(result.{0}_).MergeFrom(value).BuildPartial();", Name, TypeName);
writer.WriteLine(" } else {");
writer.WriteLine(" result.{0}_ = value;", Name);
writer.WriteLine(" }");
writer.WriteLine(" result.has{0} = true;", CapitalizedName);
writer.WriteLine(" return this;");
writer.WriteLine("}");
writer.WriteLine("public Builder Clear{0}() {{", CapitalizedName);
writer.WriteLine(" result.has{0} = false;", CapitalizedName);
writer.WriteLine(" result.{0}_ = {1};", Name, DefaultValue);
writer.WriteLine(" return this;");
writer.WriteLine("}");
}
public void GenerateMergingCode(TextGenerator writer) {
writer.WriteLine("if (other.Has{0}) {{", CapitalizedName);
writer.WriteLine(" Merge{0}(other.{0});", CapitalizedName);
writer.WriteLine("}");
}
public void GenerateBuildingCode(TextGenerator writer) {
// Nothing to do for singular fields
}
public void GenerateParsingCode(TextGenerator writer) {
writer.WriteLine("{0}.Builder subBuilder = {0}.CreateBuilder();", TypeName);
writer.WriteLine("if (Has{0}) {{", CapitalizedName);
writer.WriteLine(" subBuilder.MergeFrom({0});", CapitalizedName);
writer.WriteLine("}");
if (Descriptor.FieldType == FieldType.Group) {
writer.WriteLine("input.ReadGroup({0}, subBuilder, extensionRegistry);", Number);
} else {
writer.WriteLine("input.ReadMessage(subBuilder, extensionRegistry);");
}
writer.WriteLine("{0} = subBuilder.BuildPartial();", CapitalizedName);
}
public void GenerateSerializationCode(TextGenerator writer) {
writer.WriteLine("if (Has{0}) {{", CapitalizedName);
writer.WriteLine(" output.Write{0}({1}, {2});", MessageOrGroup, Number, CapitalizedName);
writer.WriteLine("}");
}
public void GenerateSerializedSizeCode(TextGenerator writer) {
writer.WriteLine("if (Has{0}) {{", CapitalizedName);
writer.WriteLine(" size += pb::CodedOutputStream.Compute{0}Size({1}, {2});",
MessageOrGroup, Number, CapitalizedName);
writer.WriteLine("}");
}
}
}
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