/// <summary>
/// Converts constant values from a foreign form to a native one.
/// </summary>
/// <param name="value">The foreign constant value.</param>
/// <param name="typeConstructor">A function for resolving types.</param>
/// <returns>The native constant value.</returns>
protected static ConstantValue ConvertConstantValue <TType>(object value, Common.Func <TType, ITypeInfo> typeConstructor)
where TType : class
{
if (value == null)
{
return(new ConstantValue(Reflector.Wrap(typeof(object)), null));
}
if (value != null)
{
TType type = value as TType;
if (type != null)
{
return(new ConstantValue(Reflector.Wrap(typeof(Type)), typeConstructor(type)));
}
Type valueType = value.GetType();
if (valueType.IsArray)
{
Array valueArray = (Array)value;
int length = valueArray.Length;
ConstantValue[] array = new ConstantValue[length];
for (int i = 0; i < length; i++)
{
array[i] = ConvertConstantValue(valueArray.GetValue(i), typeConstructor);
}
return(new ConstantValue(Reflector.Wrap(MapConstantArrayElementType <TType>(valueType).MakeArrayType()), array));
}
}
return(new ConstantValue(Reflector.Wrap(value.GetType()), value));
}
protected override ConstantValue[] GetAttributeConstructorArguments(StaticAttributeWrapper attribute)
{
IAttributeInstance attributeHandle = (IAttributeInstance)attribute.Handle;
IList<IParameter> parameters = attributeHandle.Constructor.Parameters;
if (parameters.Count == 0)
return EmptyArray<ConstantValue>.Instance;
List<ConstantValue> values = new List<ConstantValue>();
for (int i = 0; ; i++)
{
#if RESHARPER_50_OR_NEWER
if (i == attributeHandle.PositionParameterCount)
break;
#endif
ConstantValue? value = GetAttributePositionParameter(attributeHandle, i);
if (value.HasValue)
values.Add(value.Value);
else
break;
}
int lastParameterIndex = parameters.Count - 1;
IParameter lastParameter = parameters[lastParameterIndex];
if (!lastParameter.IsParameterArray)
return values.ToArray();
// Note: When presented with a constructor that accepts a variable number of
// arguments, ReSharper treats them as a sequence of normal parameter
// values. So we we need to map them back into a params array appropriately.
ConstantValue[] args = new ConstantValue[parameters.Count];
values.CopyTo(0, args, 0, lastParameterIndex);
int varArgsCount = values.Count - lastParameterIndex;
ConstantValue[] varArgs = new ConstantValue[varArgsCount];
for (int i = 0; i < varArgsCount; i++)
varArgs[i] = values[lastParameterIndex + i];
args[lastParameterIndex] = new ConstantValue(MakeType(lastParameter.Type), varArgs);
return args;
}
private ConstantValue ConvertConstantValue(CustomAttributeArgument constant)
{
var type = MakeType(constant.Type);
if (constant.Value != null)
{
var typeRef = constant.Value as TypeReference;
if (typeRef != null)
return new ConstantValue(type, MakeType(typeRef));
var arrayType = constant.Type as ArrayType;
if (arrayType != null)
{
var arrayConstants = (CustomAttributeArgument[])constant.Value;
var length = arrayConstants.Length;
var array = new ConstantValue[length];
for (var i = 0; i < length; i++)
array[i] = ConvertConstantValue(arrayConstants[i]);
return new ConstantValue(type, array);
}
}
return new ConstantValue(type, constant.Value);
}
