public bool ReadTag(out uint fieldTag, out string fieldName)
{
fieldTag = 0;
if (hasNextTag)
{
fieldName = nextTag;
lastTag = fieldName;
hasNextTag = false;
return(true);
}
if (IsAtEnd)
{
fieldName = null;
lastTag = fieldName;
return(false);
}
if (tokenizer.TryConsume("}"))
{
fieldName = null;
lastTag = "}";
return(false);
}
if (tokenizer.TryConsume(">"))
{
fieldName = null;
lastTag = ">";
return(false);
}
fieldName = tokenizer.ConsumeIdentifier();
lastTag = fieldName;
if (lastTag == null)
{
// If we actually read zero, that's not a valid tag.
throw InvalidProtocolBufferException.InvalidTag();
}
return(true);
}
/// <summary>
/// Parses a single field from the specified tokenizer and merges it into
/// the builder.
/// </summary>
private static void MergeField(TextTokenizer tokenizer, ExtensionRegistry extensionRegistry,
IBuilder builder)
{
FieldDescriptor field;
MessageDescriptor type = builder.DescriptorForType;
ExtensionInfo extension = null;
if (tokenizer.TryConsume("["))
{
// An extension.
StringBuilder name = new StringBuilder(tokenizer.ConsumeIdentifier());
while (tokenizer.TryConsume("."))
{
name.Append(".");
name.Append(tokenizer.ConsumeIdentifier());
}
extension = extensionRegistry.FindByName(type, name.ToString());
if (extension == null)
{
throw tokenizer.CreateFormatExceptionPreviousToken("Extension \"" + name +
"\" not found in the ExtensionRegistry.");
}
else if (extension.Descriptor.ContainingType != type)
{
throw tokenizer.CreateFormatExceptionPreviousToken("Extension \"" + name +
"\" does not extend message type \"" +
type.FullName + "\".");
}
tokenizer.Consume("]");
field = extension.Descriptor;
}
else
{
String name = tokenizer.ConsumeIdentifier();
field = type.FindDescriptor<FieldDescriptor>(name);
// Group names are expected to be capitalized as they appear in the
// .proto file, which actually matches their type names, not their field
// names.
if (field == null)
{
// Explicitly specify the invariant culture so that this code does not break when
// executing in Turkey.
String lowerName = name.ToLowerInvariant();
field = type.FindDescriptor<FieldDescriptor>(lowerName);
// If the case-insensitive match worked but the field is NOT a group,
// TODO(jonskeet): What? Java comment ends here!
if (field != null && field.FieldType != FieldType.Group)
{
field = null;
}
}
// Again, special-case group names as described above.
if (field != null && field.FieldType == FieldType.Group && field.MessageType.Name != name)
{
field = null;
}
if (field == null)
{
throw tokenizer.CreateFormatExceptionPreviousToken(
"Message type \"" + type.FullName + "\" has no field named \"" + name + "\".");
}
}
object value = null;
if (field.MappedType == MappedType.Message)
{
tokenizer.TryConsume(":"); // optional
String endToken;
if (tokenizer.TryConsume("<"))
{
endToken = ">";
}
else
{
tokenizer.Consume("{");
endToken = "}";
}
IBuilder subBuilder;
if (extension == null)
{
subBuilder = builder.CreateBuilderForField(field);
}
else
{
subBuilder = extension.DefaultInstance.WeakCreateBuilderForType() as IBuilder;
if (subBuilder == null)
{
throw new NotSupportedException("Lite messages are not supported.");
}
}
while (!tokenizer.TryConsume(endToken))
{
if (tokenizer.AtEnd)
{
throw tokenizer.CreateFormatException("Expected \"" + endToken + "\".");
}
MergeField(tokenizer, extensionRegistry, subBuilder);
}
value = subBuilder.WeakBuild();
}
else
{
tokenizer.Consume(":");
switch (field.FieldType)
{
case FieldType.Int32:
case FieldType.SInt32:
case FieldType.SFixed32:
value = tokenizer.ConsumeInt32();
break;
case FieldType.Int64:
case FieldType.SInt64:
case FieldType.SFixed64:
value = tokenizer.ConsumeInt64();
break;
case FieldType.UInt32:
case FieldType.Fixed32:
value = tokenizer.ConsumeUInt32();
break;
case FieldType.UInt64:
case FieldType.Fixed64:
value = tokenizer.ConsumeUInt64();
break;
case FieldType.Float:
value = tokenizer.ConsumeFloat();
break;
case FieldType.Double:
value = tokenizer.ConsumeDouble();
break;
case FieldType.Bool:
value = tokenizer.ConsumeBoolean();
break;
case FieldType.String:
value = tokenizer.ConsumeString();
break;
case FieldType.Bytes:
value = tokenizer.ConsumeByteString();
break;
case FieldType.Enum:
{
EnumDescriptor enumType = field.EnumType;
if (tokenizer.LookingAtInteger())
{
int number = tokenizer.ConsumeInt32();
value = enumType.FindValueByNumber(number);
if (value == null)
{
throw tokenizer.CreateFormatExceptionPreviousToken(
"Enum type \"" + enumType.FullName +
"\" has no value with number " + number + ".");
}
}
else
{
String id = tokenizer.ConsumeIdentifier();
value = enumType.FindValueByName(id);
if (value == null)
{
throw tokenizer.CreateFormatExceptionPreviousToken(
"Enum type \"" + enumType.FullName +
"\" has no value named \"" + id + "\".");
}
}
break;
}
case FieldType.Message:
case FieldType.Group:
throw new InvalidOperationException("Can't get here.");
}
}
if (field.IsRepeated)
{
builder.WeakAddRepeatedField(field, value);
}
else
{
builder.SetField(field, value);
}
}
/// <summary>
/// Parses a single field from the specified tokenizer and merges it into
/// the builder.
/// </summary>
private static void MergeField(TextTokenizer tokenizer, ExtensionRegistry extensionRegistry,
IBuilder builder)
{
FieldDescriptor field;
MessageDescriptor type = builder.DescriptorForType;
ExtensionInfo extension = null;
if (tokenizer.TryConsume("["))
{
// An extension.
StringBuilder name = new StringBuilder(tokenizer.ConsumeIdentifier());
while (tokenizer.TryConsume("."))
{
name.Append(".");
name.Append(tokenizer.ConsumeIdentifier());
}
extension = extensionRegistry.FindByName(type, name.ToString());
if (extension == null)
{
throw tokenizer.CreateFormatExceptionPreviousToken("Extension \"" + name +
"\" not found in the ExtensionRegistry.");
}
else if (extension.Descriptor.ContainingType != type)
{
throw tokenizer.CreateFormatExceptionPreviousToken("Extension \"" + name +
"\" does not extend message type \"" +
type.FullName + "\".");
}
tokenizer.Consume("]");
field = extension.Descriptor;
}
else
{
String name = tokenizer.ConsumeIdentifier();
field = type.FindDescriptor <FieldDescriptor>(name);
// Group names are expected to be capitalized as they appear in the
// .proto file, which actually matches their type names, not their field
// names.
if (field == null)
{
// Explicitly specify the invariant culture so that this code does not break when
// executing in Turkey.
#if PORTABLE_LIBRARY
String lowerName = name.ToLowerInvariant();
#else
String lowerName = name.ToLower(FrameworkPortability.InvariantCulture);
#endif
field = type.FindDescriptor <FieldDescriptor>(lowerName);
// If the case-insensitive match worked but the field is NOT a group,
// TODO(jonskeet): What? Java comment ends here!
if (field != null && field.FieldType != FieldType.Group)
{
field = null;
}
}
// Again, special-case group names as described above.
if (field != null && field.FieldType == FieldType.Group && field.MessageType.Name != name)
{
field = null;
}
if (field == null)
{
throw tokenizer.CreateFormatExceptionPreviousToken(
"Message type \"" + type.FullName + "\" has no field named \"" + name + "\".");
}
}
object value = null;
if (field.MappedType == MappedType.Message)
{
tokenizer.TryConsume(":"); // optional
String endToken;
if (tokenizer.TryConsume("<"))
{
endToken = ">";
}
else
{
tokenizer.Consume("{");
endToken = "}";
}
IBuilder subBuilder;
if (extension == null)
{
subBuilder = builder.CreateBuilderForField(field);
}
else
{
subBuilder = extension.DefaultInstance.WeakCreateBuilderForType() as IBuilder;
if (subBuilder == null)
{
throw new NotSupportedException("Lite messages are not supported.");
}
}
while (!tokenizer.TryConsume(endToken))
{
if (tokenizer.AtEnd)
{
throw tokenizer.CreateFormatException("Expected \"" + endToken + "\".");
}
MergeField(tokenizer, extensionRegistry, subBuilder);
}
value = subBuilder.WeakBuild();
}
else
{
tokenizer.Consume(":");
switch (field.FieldType)
{
case FieldType.Int32:
case FieldType.SInt32:
case FieldType.SFixed32:
value = tokenizer.ConsumeInt32();
break;
case FieldType.Int64:
case FieldType.SInt64:
case FieldType.SFixed64:
value = tokenizer.ConsumeInt64();
break;
case FieldType.UInt32:
case FieldType.Fixed32:
value = tokenizer.ConsumeUInt32();
break;
case FieldType.UInt64:
case FieldType.Fixed64:
value = tokenizer.ConsumeUInt64();
break;
case FieldType.Float:
value = tokenizer.ConsumeFloat();
break;
case FieldType.Double:
value = tokenizer.ConsumeDouble();
break;
case FieldType.Bool:
value = tokenizer.ConsumeBoolean();
break;
case FieldType.String:
value = tokenizer.ConsumeString();
break;
case FieldType.Bytes:
value = tokenizer.ConsumeByteString();
break;
case FieldType.Enum:
{
EnumDescriptor enumType = field.EnumType;
if (tokenizer.LookingAtInteger())
{
int number = tokenizer.ConsumeInt32();
value = enumType.FindValueByNumber(number);
if (value == null)
{
throw tokenizer.CreateFormatExceptionPreviousToken(
"Enum type \"" + enumType.FullName +
"\" has no value with number " + number + ".");
}
}
else
{
String id = tokenizer.ConsumeIdentifier();
value = enumType.FindValueByName(id);
if (value == null)
{
throw tokenizer.CreateFormatExceptionPreviousToken(
"Enum type \"" + enumType.FullName +
"\" has no value named \"" + id + "\".");
}
}
break;
}
case FieldType.Message:
case FieldType.Group:
throw new InvalidOperationException("Can't get here.");
}
}
if (field.IsRepeated)
{
builder.WeakAddRepeatedField(field, value);
}
else
{
builder.SetField(field, value);
}
}