/// <summary> /// Create code to unbox the given source value into the given type. /// </summary> public static RLRange Unbox(this IRLBuilder builder, ISourceLocation sequencePoint, RegisterSpec source, XTypeReference type, AssemblyCompiler compiler, DexTargetPackage targetPackage, IRegisterAllocator frame) { if (type.IsPrimitive) { RCode convertAfterCode; var rUnboxed = frame.AllocateTemp(type.GetReference(targetPackage)); var unboxValueMethod = type.GetUnboxValueMethod(compiler, targetPackage, out convertAfterCode); var first = builder.Add(sequencePoint, RCode.Invoke_static, unboxValueMethod, source); var last = builder.Add(sequencePoint, type.MoveResult(), rUnboxed); if (convertAfterCode != RCode.Nop) { last = builder.Add(sequencePoint, convertAfterCode, rUnboxed, rUnboxed); } return(new RLRange(first, last, rUnboxed)); } XTypeDefinition enumTypeDef; if (type.IsEnum(out enumTypeDef)) { var rUnboxed = frame.AllocateTemp(type.GetReference(targetPackage)); var unboxValueMethod = enumTypeDef.Methods.First(x => x.Name == NameConstants.Enum.UnboxMethodName).GetReference(targetPackage); var first = builder.Add(sequencePoint, RCode.Invoke_static, unboxValueMethod, source); var last = builder.Add(sequencePoint, type.MoveResult(), rUnboxed); return(new RLRange(first, last, rUnboxed)); } if (!type.IsGenericParameter) { // Just cast var checkCast = builder.Add(sequencePoint, RCode.Check_cast, type.GetReference(targetPackage), source); return(new RLRange(checkCast, source)); } // Do nothing var nop = builder.Add(sequencePoint, RCode.Nop); return(new RLRange(nop, source)); }
/// <summary> /// Create code to initialize a value from an attribute. /// </summary> /// <returns>The register(s) holding the value</returns> private static Register[] CreateInitializeValueInstructions(ISourceLocation seqp, MethodBody body, XTypeReference targetType, CustomAttributeArgument value, AssemblyCompiler compiler, DexTargetPackage targetPackage) { List <Register> result = new List <Register>(); // allocate result, initialize to default value. if (targetType.IsWide()) { Tuple <Register, Register> regs = body.AllocateWideRegister(RCategory.Temp); //body.Instructions.Add(seqp, RCode.Const_wide, 0, regs.Item1); result.Add(regs.Item1); result.Add(regs.Item2); } else if (targetType.IsPrimitive) { Register reg = body.AllocateRegister(RCategory.Temp, RType.Value); //body.Instructions.Add(seqp, RCode.Const, 0, reg); result.Add(reg); } else // object { Register reg = body.AllocateRegister(RCategory.Temp, RType.Object); //body.Instructions.Add(seqp, RCode.Const, 0, reg); result.Add(reg); } // load data if (value.Value == null) // must be a reference type { body.Instructions.Add(seqp, RCode.Const, 0, result[0]); body.Instructions.Add(seqp, RCode.Check_cast, targetType.GetReference(targetPackage), result[0]); return(result.ToArray()); } var valueType = XBuilder.AsTypeReference(compiler.Module, value.Type); if (value.Value is CustomAttributeArgument) { // this happens if a type conversion is neccessary var nestedValue = (CustomAttributeArgument)value.Value; valueType = XBuilder.AsTypeReference(compiler.Module, nestedValue.Type); var rOrigValue = CreateInitializeValueInstructions(seqp, body, valueType, nestedValue, compiler, targetPackage); if (!nestedValue.Type.IsPrimitive) { body.Instructions.Add(seqp, RCode.Move_object, result[0], rOrigValue[0]); body.Instructions.Add(seqp, RCode.Check_cast, targetType.GetReference(targetPackage), result[0]); } else if (!targetType.IsPrimitive) { body.Instructions.Add(seqp, RCode.Invoke_static, valueType.GetBoxValueOfMethod(), rOrigValue); body.Instructions.Add(seqp, RCode.Move_result_object, result[0]); body.Instructions.Add(seqp, RCode.Check_cast, targetType.GetReference(targetPackage), result[0]); } else { throw new Exception(string.Format("type converstion in attribute {0}=>{1} not yet supported", valueType.FullName, targetType.FullName)); } } else if (valueType.IsArray) { var array = (CustomAttributeArgument[])value.Value; var elementType = valueType.ElementType; Register rIndex = body.AllocateRegister(RCategory.Temp, RType.Value); body.Instructions.Add(seqp, RCode.Const, array.Length, rIndex); body.Instructions.Add(seqp, RCode.New_array, valueType.GetReference(targetPackage), result[0], rIndex); // iterate through each value for (int i = 0; i < array.Length; i++) { Register rLoaded = CreateInitializeValueInstructions(seqp, body, elementType, array[i], compiler, targetPackage)[0]; body.Instructions.Add(seqp, RCode.Const, i, rIndex); body.Instructions.Add(seqp, valueType.APut(), rLoaded, result[0], rIndex); } } else if (targetType.IsEnum()) { var enumClass = (targetType.IsEnum()? targetType:valueType).GetReference(targetPackage); Register rEnumClass = body.AllocateRegister(RCategory.Temp, RType.Object); body.Instructions.Add(seqp, RCode.Const_class, enumClass, rEnumClass); long lVal = Convert.ToInt64(value.Value); if (lVal <= int.MaxValue && lVal >= int.MinValue) { Register regTmp = body.AllocateRegister(RCategory.Temp, RType.Value); body.Instructions.Add(seqp, RCode.Const, (int)lVal, regTmp); var get = compiler.GetDot42InternalType("Enum").Resolve() .Methods.Single(p => p.Name == "Get" && p.Parameters.Count == 2 && !p.Parameters[1].ParameterType.IsWide()) .GetReference(targetPackage); body.Instructions.Add(seqp, RCode.Invoke_static, get, rEnumClass, regTmp); body.Instructions.Add(seqp, targetType.MoveResult(), result[0]); } else { var regTmp = body.AllocateWideRegister(RCategory.Temp); body.Instructions.Add(seqp, RCode.Const, (long)lVal, regTmp.Item1); var get = compiler.GetDot42InternalType("Enum").Resolve() .Methods.Single(p => p.Name == "Get" && p.Parameters.Count == 2 && p.Parameters[1].ParameterType.IsWide()) .GetReference(targetPackage); body.Instructions.Add(seqp, RCode.Invoke_static, get, rEnumClass, regTmp.Item1); body.Instructions.Add(seqp, targetType.MoveResult(), result[0]); } body.Instructions.Add(seqp, RCode.Check_cast, targetType.GetReference(targetPackage), result[0]); } else if (valueType.IsSystemString()) { body.Instructions.Add(seqp, RCode.Const_string, (string)value.Value, result[0]); } else if (valueType.IsSystemType()) { var type = XBuilder.AsTypeReference(compiler.Module, (TypeReference)value.Value); // TODO: this might not work with typeof(void) on ART runtime. body.Instructions.Add(seqp, RCode.Const_class, type.GetReference(targetPackage), result[0]); } else if (!valueType.IsPrimitive) { // can this happen? throw new Exception("invalid value type in attribute: " + targetType.FullName); } else { if (targetType.IsSystemObject()) { // can this happen? or is this always handled above? // boxing required. var rUnboxed = CreateInitializeValueInstructions(seqp, body, valueType, value, compiler, targetPackage); body.Instructions.Add(seqp, RCode.Invoke_static, valueType.GetBoxValueOfMethod(), rUnboxed); body.Instructions.Add(seqp, RCode.Move_result_object, result[0]); } else if (targetType.IsDouble()) { body.Instructions.Add(seqp, RCode.Const_wide, Convert.ToDouble(value.Value), result[0]); } else if (targetType.IsWide() && valueType.IsUInt64()) { body.Instructions.Add(seqp, RCode.Const_wide, (long)Convert.ToUInt64(value.Value), result[0]); } else if (targetType.IsWide()) { body.Instructions.Add(seqp, RCode.Const_wide, Convert.ToInt64(value.Value), result[0]); } else if (targetType.IsFloat()) { body.Instructions.Add(seqp, RCode.Const, Convert.ToSingle(value.Value), result[0]); } else { body.Instructions.Add(seqp, RCode.Const, (int)Convert.ToInt64(value.Value), result[0]); } } return(result.ToArray()); }