private void SkipGroup()
{
var startGroupTag = _lastTag;
while (true)
{
var tag = ReadTag();
if (tag == 0U)
{
throw OutOfInputException();
}
if (WireFormat.GetWireType(tag) != WireType.EndGroup)
{
SkipField();
continue;
}
var startGroupFieldNumber = WireFormat.GetFieldNumber(startGroupTag);
var endGroupFieldNumber = WireFormat.GetFieldNumber(tag);
if (startGroupFieldNumber == endGroupFieldNumber)
{
return;
}
var message =
$"Mismatched end-group tag. Started with field {startGroupFieldNumber}; ended with field {endGroupFieldNumber}";
throw new InvalidDataException(message);
}
}
internal static bool IsPackedRepeatedField(uint tag)
{
if (TypeCanBePacked)
{
return(WireFormat.GetWireType(tag) == WireType.LengthDelimited);
}
return(false);
}
private static void AssertTagOk(int field, WireType wireType)
{
var tag = WireFormat.MakeTag(field, wireType);
Assert.Equal(field, WireFormat.GetFieldNumber(tag));
Assert.Equal(wireType, WireFormat.GetWireType(tag));
Assert.Equal(wireType, (WireType)(tag & 7));
Assert.Equal(field, (int)(tag >> 3));
}
public void SkipField()
{
if (_lastTag == 0U)
{
if (End)
{
throw new InvalidOperationException("SkipField cannot be called at the end of a stream");
}
throw new InvalidOperationException("SkipField cannot be called when tag have not been read");
}
switch (WireFormat.GetWireType(_lastTag))
{
case WireType.Varint:
SkipVarInt();
break;
case WireType.Fixed32:
SkipBytes(4);
break;
case WireType.Fixed64:
SkipBytes(8);
break;
case WireType.LengthDelimited:
SkipBytes(ReadByteSize());
break;
case WireType.StartGroup:
SkipGroup();
break;
case WireType.EndGroup:
throw new InvalidDataException(
"SkipField called on an end-group tag. Most likely start group was missing.");
}
}
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::ICodedInputStream input) {");
writer.WriteLine(" return MergeFrom(input, pb::ExtensionRegistry.Empty);");
writer.WriteLine("}");
writer.WriteLine();
writer.WriteLine(
"public override Builder MergeFrom(pb::ICodedInputStream input, pb::ExtensionRegistry extensionRegistry) {");
writer.Indent();
writer.WriteLine("PrepareBuilder();");
if (!UseLiteRuntime)
{
writer.WriteLine("pb::UnknownFieldSet.Builder unknownFields = null;");
}
writer.WriteLine("uint tag;");
writer.WriteLine("string field_name;");
writer.WriteLine("while (input.ReadTag(out tag, out field_name)) {");
writer.Indent();
writer.WriteLine("if(tag == 0 && field_name != null) {");
writer.Indent();
//if you change from StringComparer.Ordinal, the array sort in FieldNames { get; } must also change
writer.WriteLine(
"int field_ordinal = global::System.Array.BinarySearch(_{0}FieldNames, field_name, global::System.StringComparer.Ordinal);",
NameHelpers.UnderscoresToCamelCase(ClassName));
writer.WriteLine("if(field_ordinal >= 0)");
writer.WriteLine(" tag = _{0}FieldTags[field_ordinal];", NameHelpers.UnderscoresToCamelCase(ClassName));
writer.WriteLine("else {");
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, field_name);",
UseLiteRuntime ? "" : "unknownFields, ");
writer.WriteLine(" continue;");
writer.WriteLine("}");
writer.Outdent();
writer.WriteLine("}");
writer.WriteLine("switch (tag) {");
writer.Indent();
writer.WriteLine("case 0: {"); // 0 signals EOF / limit reached
writer.WriteLine(" throw pb::InvalidProtocolBufferException.InvalidTag();");
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, field_name);",
UseLiteRuntime ? "" : "unknownFields, ");
writer.WriteLine(" break;");
writer.WriteLine("}");
foreach (FieldDescriptor field in sortedFields)
{
WireFormat.WireType wt = WireFormat.GetWireType(field.FieldType);
uint tag = WireFormat.MakeTag(field.FieldNumber, wt);
if (field.IsRepeated &&
(wt == WireFormat.WireType.Varint || wt == WireFormat.WireType.Fixed32 ||
wt == WireFormat.WireType.Fixed64))
{
writer.WriteLine("case {0}:",
WireFormat.MakeTag(field.FieldNumber, WireFormat.WireType.LengthDelimited));
}
writer.WriteLine("case {0}: {{", tag);
writer.Indent();
CreateFieldGenerator(field).GenerateParsingCode(writer);
writer.WriteLine("break;");
writer.Outdent();
writer.WriteLine("}");
}
writer.Outdent();
writer.WriteLine("}");
writer.Outdent();
writer.WriteLine("}");
writer.WriteLine();
if (!UseLiteRuntime)
{
writer.WriteLine("if (unknownFields != null) {");
writer.WriteLine(" this.UnknownFields = unknownFields.Build();");
writer.WriteLine("}");
}
writer.WriteLine("return this;");
writer.Outdent();
writer.WriteLine("}");
writer.WriteLine();
}
