private IList <Instruction> LoadValueOnStack(TypeReference parameterType, object value)
{
if (parameterType.IsArray(out var elementType) && value is CustomAttributeArgument[] args)
{
elementType = elementType.CleanEnumsInTypeRef();
parameterType = parameterType.CleanEnumsInTypeRef();
var array = CreateVariable(parameterType);
var createArrayInstructions = new List <Instruction>()
{
_processor.Create(OpCodes.Ldc_I4, args.Length),
_processor.Create(OpCodes.Newarr, elementType),
_processor.Create(OpCodes.Stloc, array)
};
var stelem = elementType.GetStElemCode();
for (var i = 0; i < args.Length; ++i)
{
var parameter = args[i];
createArrayInstructions.Add(_processor.Create(OpCodes.Ldloc, array));
createArrayInstructions.Add(_processor.Create(OpCodes.Ldc_I4, i));
createArrayInstructions.AddRange(LoadValueOnStack(elementType, parameter.Value));
createArrayInstructions.Add(_processor.Create(stelem));
}
createArrayInstructions.Add(_processor.Create(OpCodes.Ldloc, array));
return(createArrayInstructions);
}
if (parameterType.IsEnum(out var enumUnderlyingType))
{
enumUnderlyingType = enumUnderlyingType.CleanEnumsInTypeRef();
return(new List <Instruction>(LoadPrimitiveConstOnStack(enumUnderlyingType.MetadataType, value)));
}
if (parameterType.IsPrimitive || (parameterType.FullName == typeof(String).FullName))
{
return(new List <Instruction>(LoadPrimitiveConstOnStack(parameterType.MetadataType, value)));
}
if (parameterType.FullName == typeof(Type).FullName)
{
var typeVal = (TypeReference)value;
var typeReference = typeVal.CleanEnumsInTypeRef();
var typeTypeRef = _referenceFinder.GetTypeReference(typeof(Type));
var methodReference = _referenceFinder.GetMethodReference(typeTypeRef, md => md.Name == nameof(Type.GetTypeFromHandle));
var instructions = new List <Instruction>
{
_processor.Create(OpCodes.Ldtoken, typeReference),
_processor.Create(OpCodes.Call, methodReference)
};
return(instructions);
}
if (parameterType.FullName == typeof(Object).FullName && value is CustomAttributeArgument arg)
{
var valueType = arg.Type;
if (arg.Value is TypeReference)
{
valueType = _referenceFinder.GetTypeReference(typeof(Type));
}
var isEnum = valueType.IsEnum(out _);
valueType = valueType.CleanEnumsInTypeRef();
var instructions = LoadValueOnStack(valueType, arg.Value);
if (valueType.IsValueType || (!valueType.IsArray && isEnum))
{
instructions.Add(_processor.Create(OpCodes.Box, valueType));
}
return(instructions);
}
throw new NotSupportedException("Parametertype: " + parameterType);
}