/// <summary> /// Convert the given node that holds a numeric value and convert it to it's enum instance. /// </summary> private static void ConvertNumericToEnum(AstExpression node, XTypeDefinition enumType, XTypeReference enumNumericType) { // Call Enum.GetValue(enumType, value) var enumValue = new AstExpression(node); node.SetCode(enumNumericType.IsWide() ? AstCode.Long_to_enum : AstCode.Int_to_enum).SetArguments(enumValue).SetType(enumType); node.Operand = null; }
/// <summary> /// Create code to load a value from an annotation interface. /// </summary> /// <returns>The register(s) holding the value</returns> private static Register[] CreateLoadValueSequence( ISourceLocation seqp, MethodBody body, XTypeReference valueType, Register annotationReg, MethodDefinition getter, AssemblyCompiler compiler, DexTargetPackage targetPackage, out Instruction branchIfNotSet) { // NOTE: It would be better if we wouldn't get the values as object arrays // but as arrays of the actual type. // Apparently though the DexWriter will not write our attributes // if they contain arrays not of type object[]. Therefore the // conversion code below. // All in all it would be much cleaner if we could emit Ast code here // instead of RL code. List<Register> result = new List<Register>(); // get the array. Register regObject = body.AllocateRegister(RCategory.Temp, RType.Object); Register regIntVal = body.AllocateRegister(RCategory.Temp, RType.Value); body.Instructions.Add(seqp, RCode.Invoke_interface, getter, annotationReg); body.Instructions.Add(seqp, RCode.Move_result_object, regObject); // allocate result, initialize to default value. if (valueType.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 (valueType.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); } // check if value is unset (array length 0) or null (array length 2) body.Instructions.Add(seqp, RCode.Array_length, regIntVal, regObject); branchIfNotSet = body.Instructions.Add(seqp, RCode.If_eqz, regIntVal); body.Instructions.Add(seqp, RCode.Rsub_int, 1, regIntVal, regIntVal); var branchOnNull = body.Instructions.Add(seqp, RCode.If_nez, regIntVal); // get the (boxed) value body.Instructions.Add(seqp, RCode.Const, 0, regIntVal); // convert to target type. if (valueType.IsArray) { Register regTmp = body.AllocateRegister(RCategory.Temp, RType.Object); Register regType = body.AllocateRegister(RCategory.Temp, RType.Object); var helper = compiler.GetDot42InternalType(InternalConstants.CompilerHelperName); var convertArray = helper.Resolve().Methods.First(p => p.Name == "ConvertArray" && p.Parameters.Count == 2) .GetReference(targetPackage); var underlying = valueType.ElementType.GetReference(targetPackage); body.Instructions.Add(seqp, RCode.Aget_object, regTmp, regObject, regIntVal); body.Instructions.Add(seqp, RCode.Const_class, underlying, regType); body.Instructions.Add(seqp, RCode.Invoke_static, convertArray, regTmp, regType); body.Instructions.Add(seqp, RCode.Move_result_object, result[0]); body.Instructions.Add(seqp, RCode.Check_cast, valueType.GetReference(targetPackage), result[0]); } else if (valueType.IsEnum()) { Register regTmp = body.AllocateRegister(RCategory.Temp, RType.Object); Register regType = body.AllocateRegister(RCategory.Temp, RType.Object); var getFromObject = compiler.GetDot42InternalType("Enum").Resolve() .Methods.Single(p=>p.Name == "GetFromObject") .GetReference(targetPackage); body.Instructions.Add(seqp, RCode.Aget_object, regTmp, regObject, regIntVal); body.Instructions.Add(seqp, RCode.Const_class, valueType.GetReference(targetPackage), regType); body.Instructions.Add(seqp, RCode.Invoke_static, getFromObject, regType, regTmp); body.Instructions.Add(seqp, valueType.MoveResult(), result[0]); body.Instructions.Add(seqp, RCode.Check_cast, valueType.GetReference(targetPackage), result[0]); } else if(!valueType.IsPrimitive) { body.Instructions.Add(seqp, RCode.Aget_object, result[0], regObject, regIntVal); body.Instructions.Add(seqp, RCode.Check_cast, valueType.GetReference(targetPackage), result[0]); } else { Register regTmp = body.AllocateRegister(RCategory.Temp, RType.Object); // unbox and store RCode afterConvert; var unbox = valueType.GetUnboxValueMethod(compiler, targetPackage, out afterConvert); body.Instructions.Add(seqp, RCode.Aget_object, regTmp, regObject, regIntVal); body.Instructions.Add(seqp, RCode.Invoke_static, unbox, regTmp); body.Instructions.Add(seqp, valueType.MoveResult(), result[0]); if (afterConvert != RCode.Nop) { body.Instructions.Add(seqp, afterConvert, result[0], result[0]); } } // nop will be removed at some stage later. var nop = body.Instructions.Add(seqp, RCode.Nop); branchOnNull.Operand = nop; return result.ToArray(); }
/// <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(); }