public override object ReadValue(BlobReader reader, Func<string, CustomAttributePropertyType> resolveType)
{
switch (Type)
{
case PrimitiveType.Boolean:
return reader.ReadByte() == 0 ? false : true;
case PrimitiveType.Char:
return (char)reader.ReadUInt16();
case PrimitiveType.Int8:
return reader.ReadSByte();
case PrimitiveType.Int16:
return reader.ReadInt16();
case PrimitiveType.Int32:
return reader.ReadInt32();
case PrimitiveType.Int64:
return reader.ReadInt64();
case PrimitiveType.UInt8:
return reader.ReadByte();
case PrimitiveType.UInt16:
return reader.ReadUInt16();
case PrimitiveType.UInt32:
return reader.ReadUInt32();
case PrimitiveType.UInt64:
return reader.ReadUInt64();
case PrimitiveType.IntNative:
case PrimitiveType.UIntNative:
throw new PEException("cannot read native integers");
case PrimitiveType.Single:
return reader.ReadSingle();
case PrimitiveType.Double:
return reader.ReadDouble();
case PrimitiveType.String:
return reader.ReadUTF8SizedString();
case PrimitiveType.Type:
return new TypeCustomAttributePropertyValue { Name = reader.ReadUTF8SizedString() };
case PrimitiveType.Object:
case PrimitiveType.TypedRef:
case PrimitiveType.Void:
throw new PEException("invalid type tag in custom attribute");
default:
throw new ArgumentOutOfRangeException();
}
}
public void Read(IImSeq<CustomAttributePropertyType> fixedArgTypes, BlobReader reader, Func<string, CustomAttributePropertyType> resolveType)
{
var fieldArgs = default(Map<string, CustomAttributeProperty>);
var propertyArgs = default(Map<string, CustomAttributeProperty>);
if (reader.AtEndOfBlob)
{
if (fixedArgTypes.Count > 0)
throw new PEException("expected fixed arguments in custom attribute");
FixedArgs = Constants.EmptyCustomAttributeProperties;
FieldArgs = Constants.EmptyNamedCustomAttributueProperties;
PropertyArgs = Constants.EmptyNamedCustomAttributueProperties;
}
else
{
if (reader.ReadUInt16() != prolog)
throw new PEException("invalid custom attribute");
if (fixedArgTypes.Count > 0)
{
var fixedArgs = new Seq<CustomAttributeProperty>(fixedArgTypes.Count);
for (var i = 0; i < fixedArgTypes.Count; i++)
{
var type = fixedArgTypes[i];
fixedArgs.Add
(new CustomAttributeProperty { Type = type, Value = type.ReadValue(reader, resolveType) });
}
FixedArgs = fixedArgs;
}
else
FixedArgs = Constants.EmptyCustomAttributeProperties;
var numNamed = reader.ReadUInt16();
for (var i = 0; i < numNamed; i++)
{
var tag = (TypeSigTag)reader.ReadByte();
var type = CustomAttributePropertyType.Read(reader, resolveType);
var nm = reader.ReadUTF8SizedString();
var prop = new CustomAttributeProperty { Type = type, Value = type.ReadValue(reader, resolveType) };
if (tag == TypeSigTag.CUSTOM_ATTRIBUTE_FIELD)
{
if (fieldArgs == null)
fieldArgs = new Map<string, CustomAttributeProperty>();
if (fieldArgs.ContainsKey(nm))
throw new PEException("duplicate named field in custom attribute");
fieldArgs.Add(nm, prop);
}
else if (tag == TypeSigTag.CUSTOM_ATTRIBUTE_PROPERTY)
{
if (propertyArgs == null)
propertyArgs = new Map<string, CustomAttributeProperty>();
if (propertyArgs.ContainsKey(nm))
throw new PEException("duplicate named property in custom attribute");
propertyArgs.Add(nm, prop);
}
else
throw new PEException("invalid custom attribute");
}
FieldArgs = fieldArgs ?? Constants.EmptyNamedCustomAttributueProperties;
PropertyArgs = propertyArgs ?? Constants.EmptyNamedCustomAttributueProperties;
}
}
public static CustomAttributePropertyType Read(BlobReader reader, Func<string, CustomAttributePropertyType> resolveType)
{
var tag = (TypeSigTag)reader.ReadByte();
var res = default(CustomAttributePropertyType);
switch (tag)
{
case TypeSigTag.SZARRAY:
res = new ArrayCustomAttributePropertyType();
break;
case TypeSigTag.CUSTOM_ATTRIBUTE_BOXED_ARGUMENT:
res = new ObjectCustomAttributePropertyType();
break;
case TypeSigTag.CUSTOM_ATTRIBUTE_ENUM:
{
var typeName = reader.ReadUTF8SizedString();
res = resolveType(typeName);
if (!(res is EnumCustomAttributePropertyType))
throw new PEException("invalid enumeration type in custom attribute");
break;
}
default:
res = new PrimitiveCustomAttributePropertyType { Type = PrimitiveTypeSig.FromTag(tag) };
break;
}
res.ReadRest(reader, resolveType);
return res;
}
