/// <summary>
/// Ensure the given value register is a temp register.
/// If it is not, allocate a temp register an copy to it.
/// </summary>
public static RLRange EnsureTemp(this IRLBuilder builder, ISourceLocation sequencePoint, RegisterSpec value, IRegisterAllocator frame)
{
// Is temp?
if (value.Register.Category == RCategory.Temp)
{
return(new RLRange(value));
}
// No, allocate temp
var tmp = frame.AllocateTemp(value.Type);
Instruction ins;
switch (value.Register.Type)
{
case RType.Object:
ins = builder.Add(sequencePoint, RCode.Move_object, tmp.Register, value.Register);
break;
case RType.Wide:
ins = builder.Add(sequencePoint, RCode.Move_wide, tmp.Register, value.Register);
break;
case RType.Value:
ins = builder.Add(sequencePoint, RCode.Move, tmp.Register, value.Register);
break;
default:
throw new ArgumentException("Unknown register type " + (int)value.Register.Type);
}
return(new RLRange(ins, tmp));
}
/// <summary>
/// Create code to unbox the given source array of boxed type elements resulting from a call into an array of primitive elements.
/// </summary>
public static RLRange UnboxGenericArrayResult(this IRLBuilder builder, ISourceLocation sequencePoint, RegisterSpec boxedArray,
XTypeReference type, DexTargetPackage targetPackage, IRegisterAllocator frame, AssemblyCompiler compiler)
{
var internalBoxingType = compiler.GetDot42InternalType("Boxing").Resolve();
var primitiveArray = frame.AllocateTemp(type.GetReference(targetPackage));
var ilUnboxMethod = internalBoxingType.Methods.First(x => x.Name.StartsWith("Unbox") && (x.Parameters.Count == 1) && (x.ReturnType.IsSame(type, true)));
var unboxMethod = ilUnboxMethod.GetReference(targetPackage);
var call = builder.Add(sequencePoint, RCode.Invoke_static, unboxMethod, boxedArray);
var saveArray = builder.Add(sequencePoint, RCode.Move_result_object, primitiveArray);
return(new RLRange(call, saveArray, primitiveArray));
}
/// <summary>
/// Create code to box the given source array of primitive type elements into an array of boxed elements.
/// </summary>
public static RLRange BoxGenericArray(this IRLBuilder builder, ISourceLocation sequencePoint, RegisterSpec source,
XTypeReference type, DexTargetPackage targetPackage, IRegisterAllocator frame, AssemblyCompiler compiler)
{
var objectArrayType = new DexLib.ArrayType(new ClassReference("java.lang.Object"));
var boxedArray = frame.AllocateTemp(objectArrayType);
var internalBoxingType = compiler.GetDot42InternalType("Boxing").Resolve();
var ilBoxMethod = internalBoxingType.Methods.First(x => x.EqualsName("Box") && (x.Parameters.Count == 1) && (x.Parameters[0].ParameterType.IsSame(type, true)));
var boxMethod = ilBoxMethod.GetReference(targetPackage);
var call = builder.Add(sequencePoint, RCode.Invoke_static, boxMethod, source);
var saveArray = builder.Add(sequencePoint, RCode.Move_result_object, boxedArray);
return(new RLRange(call, saveArray, boxedArray));
}
/// <summary>
/// Create and add an instruction.
///
/// This seems to be a dangerous overload, since it may hide the one below if operand is null.
/// We can't remove it without checking all ~170 usages though...
/// </summary>
public static Instruction Add(this IRLBuilder builder, ISourceLocation sequencePoint, RCode opcode, params Register[] registers)
{
if (registers.Any(r => r == null))
{
throw new InvalidOperationException("Register must not be null. Wrong overload?");
}
return(builder.Add(sequencePoint, opcode, (object)null, registers));
}
/// <summary>
/// Create code to unbox the given source array of boxed type elements into an array of primitive elements.
/// </summary>
public static RLRange UnboxGenericArray(this IRLBuilder builder, ISourceLocation sequencePoint, RegisterSpec source, RegisterSpec boxedArray,
XTypeReference type, DexTargetPackage targetPackage, IRegisterAllocator frame, AssemblyCompiler compiler)
{
var internalBoxingType = compiler.GetDot42InternalType("Boxing").Resolve();
var ilUnboxMethod = internalBoxingType.Methods.First(x => x.EqualsName("UnboxTo") && (x.Parameters.Count == 2) && (x.Parameters[1].ParameterType.IsSame(type, true)));
var unboxMethod = ilUnboxMethod.GetReference(targetPackage);
var call = builder.Add(sequencePoint, RCode.Invoke_static, unboxMethod, boxedArray, source);
return(new RLRange(call, null));
}
/// <summary>
/// Create and add an instruction.
/// </summary>
public static Instruction Add(this IRLBuilder builder, ISourceLocation sequencePoint, RCode opcode, object operand, params Register[] registers)
{
if (operand is Register)
{
throw new InvalidOperationException("Wrong overload. Please fix me..."); // see above.
}
if (operand is RegisterSpec || operand is RLRange)
{
throw new InvalidOperationException("Wrong kind of argument. Please fix me..."); // see above.
}
return(builder.Add(sequencePoint, opcode, operand, registers));
}
/// <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 box the given source value into the given type.
/// </summary>
public static RLRange Box(this IRLBuilder builder, ISourceLocation sequencePoint, RegisterSpec source, XTypeReference type, DexTargetPackage targetPackage, IRegisterAllocator frame)
{
if (type.IsPrimitive)
{
if (type.IsByte())
{
builder.Add(sequencePoint, RCode.Int_to_byte, source.Register, source.Register);
}
else if (type.IsUInt16())
{
builder.Add(sequencePoint, RCode.Int_to_short, source.Register, source.Register);
}
// Call appropriate valueOf method
var boxedType = type.Module.TypeSystem.Object;
var r = frame.AllocateTemp(boxedType.GetReference(targetPackage));
var call = builder.Add(sequencePoint, RCode.Invoke_static, type.GetBoxValueOfMethod(), source.Registers);
var last = builder.Add(sequencePoint, RCode.Move_result_object, r);
return(new RLRange(call, last, r));
}
if (type.IsGenericParameter)
{
var nop = builder.Add(sequencePoint, RCode.Nop);
return(new RLRange(nop, source));
}
XTypeDefinition typeDef;
if (type.TryResolve(out typeDef) && (typeDef.IsEnum))
{
// Call appropriate valueOf method
/*var boxedType = type.Module.TypeSystem.Object;
* var r = frame.AllocateTemp(boxedType.GetReference(target, nsConverter));
* var call = builder.Add(sequencePoint, RCode.Invoke_static, typeDef.GetEnumUnderlyingType().GetBoxValueOfMethod(), source.Registers);
* var last = builder.Add(sequencePoint, RCode.Move_result_object, r);
* return new RLRange(call, last, r);*/
}
// Just cast
var checkCast = builder.Add(sequencePoint, RCode.Check_cast, type.GetReference(targetPackage), source);
return(new RLRange(checkCast, source));
}
/// <summary>
/// Create and add an instruction.
///
/// This seems to be a dangerous overload, since it may hide the one below if operand is null.
/// We can't remove it without checking all ~170 usages though...
/// </summary>
public static Instruction Add(this IRLBuilder builder, ISourceLocation sequencePoint, RCode opcode)
{
return(builder.Add(sequencePoint, opcode, (object)null, new Register[0]));
}
/// <summary>
/// Emit code (if needed) to convert a value from source type to destination type.
/// This method is used in "store" opcodes such stloc, stfld, stsfld, call
/// </summary>
internal static RLRange ConvertTypeBeforeStore(this IRLBuilder builder, ISourceLocation sequencePoint, XTypeReference sourceType, XTypeReference destinationType, RegisterSpec source, DexTargetPackage targetPackage, IRegisterAllocator frame, AssemblyCompiler compiler, out bool converted)
{
converted = false;
if (sourceType.IsSame(destinationType))
{
// Unsigned conversions
if (sourceType.IsByte())
{
var tmp = builder.EnsureTemp(sequencePoint, source, frame);
var ins = builder.Add(sequencePoint, RCode.Int_to_byte, tmp.Result, tmp.Result);
converted = true;
return(new RLRange(tmp, ins, tmp.Result));
}
else if (sourceType.IsUInt16())
{
var tmp = builder.EnsureTemp(sequencePoint, source, frame);
var ins = builder.Add(sequencePoint, RCode.Int_to_short, tmp.Result, tmp.Result);
converted = true;
return(new RLRange(tmp, ins, tmp.Result));
}
return(new RLRange(source));
}
if (sourceType.IsArray)
{
var compilerHelper = compiler.GetDot42InternalType(InternalConstants.CompilerHelperName).Resolve();
var arrayType = targetPackage.DexFile.GetClass(targetPackage.NameConverter.GetConvertedFullName(compilerHelper));
var sourceArrayElementType = ((XArrayType)sourceType).ElementType;
if (destinationType.ExtendsIList())
{
// Use ArrayHelper.AsList to convert
var convertMethodName = "AsList";
var convertMethod = arrayType.GetMethod(convertMethodName);
// Add code
var tmp = builder.EnsureTemp(sequencePoint, source, frame);
builder.Add(sequencePoint, RCode.Invoke_static, convertMethod, tmp.Result.Register);
var last = builder.Add(sequencePoint, RCode.Move_result_object, tmp.Result.Register);
converted = true;
return(new RLRange(tmp, last, tmp.Result));
}
if (destinationType.ExtendsICollection())
{
// Use ArrayHelper.AsCollection to convert
var convertMethodName = "AsCollection";
var convertMethod = arrayType.GetMethod(convertMethodName);
// Add code
var tmp = builder.EnsureTemp(sequencePoint, source, frame);
builder.Add(sequencePoint, RCode.Invoke_static, convertMethod, tmp.Result.Register);
var last = builder.Add(sequencePoint, RCode.Move_result_object, tmp.Result.Register);
converted = true;
return(new RLRange(tmp, last, tmp.Result));
}
if (destinationType.ExtendsIEnumerable())
{
// Use ArrayHelper.As...Enumerable to convert
var convertMethodName = FrameworkReferences.GetAsEnumerableTMethodName(sourceArrayElementType);
var convertMethod = arrayType.GetMethod(convertMethodName);
// Add code
var tmp = builder.EnsureTemp(sequencePoint, source, frame);
builder.Add(sequencePoint, RCode.Invoke_static, convertMethod, tmp.Result.Register);
var last = builder.Add(sequencePoint, RCode.Move_result_object, tmp.Result.Register);
converted = true;
return(new RLRange(tmp, last, tmp.Result));
}
}
if (sourceType.IsGenericParameter && !destinationType.IsSystemObject())
{
var gp = (XGenericParameter)sourceType;
if (gp.Constraints.Length > 0)
{
// we could find the best matching constraint here, and check if we actually
// need to cast. This would probably allow us to skip some unneccesary casts.
// We would need some sort of IsAssignableFrom though, and I'm not sure we have
// this logic with XTypeDefinition implemented yet.
// Therefore, we just assume that the original compiler has done its job well,
// and always cast to the destination type.
// Apparently dex seems not to need a cast when destinationType is an interface.
// Since i'm not to sure about this, we nevertheless insert the cast here.
// [TODO: check if this is needed]
var tmp = builder.EnsureTemp(sequencePoint, source, frame);
var cast = builder.Add(sequencePoint, RCode.Check_cast, destinationType.GetReference(targetPackage), tmp.Result);
converted = true;
return(new RLRange(tmp, cast, tmp.Result));
}
}
// Do not convert
return(new RLRange(source));
}
/// <summary>
/// Create and add an instruction.
/// </summary>
public static Instruction Add(this IRLBuilder builder, ISourceLocation sequencePoint, RCode opcode, object operand, params Register[] registers)
{
return(builder.Add(sequencePoint, opcode, operand, registers));
}
/// <summary>
/// Emit code (if needed) to convert a value from source type to destination type.
/// This method is used in "store" opcodes such stloc, stfld, stsfld, call
/// </summary>
internal static RLRange ConvertTypeBeforeStore(this IRLBuilder builder, ISourceLocation sequencePoint, XTypeReference sourceType, XTypeReference destinationType, RegisterSpec source, DexTargetPackage targetPackage, IRegisterAllocator frame, AssemblyCompiler compiler, out bool converted)
{
converted = false;
if (sourceType.IsSame(destinationType))
{
// Unsigned conversions
if (sourceType.IsByte())
{
var tmp = builder.EnsureTemp(sequencePoint, source, frame);
var ins = builder.Add(sequencePoint, RCode.Int_to_byte, tmp.Result, tmp.Result);
converted = true;
return(new RLRange(tmp, ins, tmp.Result));
}
else if (sourceType.IsUInt16())
{
var tmp = builder.EnsureTemp(sequencePoint, source, frame);
var ins = builder.Add(sequencePoint, RCode.Int_to_short, tmp.Result, tmp.Result);
converted = true;
return(new RLRange(tmp, ins, tmp.Result));
}
return(new RLRange(source));
}
if (sourceType.IsArray)
{
var compilerHelper = compiler.GetDot42InternalType(InternalConstants.CompilerHelperName).Resolve();
var arrayType = targetPackage.DexFile.GetClass(targetPackage.NameConverter.GetConvertedFullName(compilerHelper));
var sourceArrayElementType = ((XArrayType)sourceType).ElementType;
if (destinationType.ExtendsIList())
{
// Use ArrayHelper.AsList to convert
var convertMethodName = "AsList";
var convertMethod = arrayType.GetMethod(convertMethodName);
// Add code
var tmp = builder.EnsureTemp(sequencePoint, source, frame);
builder.Add(sequencePoint, RCode.Invoke_static, convertMethod, tmp.Result.Register);
var last = builder.Add(sequencePoint, RCode.Move_result_object, tmp.Result.Register);
converted = true;
return(new RLRange(tmp, last, tmp.Result));
}
if (destinationType.ExtendsICollection())
{
// Use ArrayHelper.AsCollection to convert
var convertMethodName = "AsCollection";
var convertMethod = arrayType.GetMethod(convertMethodName);
// Add code
var tmp = builder.EnsureTemp(sequencePoint, source, frame);
builder.Add(sequencePoint, RCode.Invoke_static, convertMethod, tmp.Result.Register);
var last = builder.Add(sequencePoint, RCode.Move_result_object, tmp.Result.Register);
converted = true;
return(new RLRange(tmp, last, tmp.Result));
}
if (destinationType.ExtendsIEnumerable())
{
// Use ArrayHelper.As...Enumerable to convert
var convertMethodName = "AsObjectEnumerable";
if (sourceArrayElementType.IsPrimitive)
{
if (sourceArrayElementType.IsBoolean())
{
convertMethodName = "AsBoolEnumerable";
}
else if (sourceArrayElementType.IsByte())
{
convertMethodName = "AsByteEnumerable";
}
else if (sourceArrayElementType.IsSByte())
{
convertMethodName = "AsSByteEnumerable";
}
else if (sourceArrayElementType.IsChar())
{
convertMethodName = "AsCharEnumerable";
}
else if (sourceArrayElementType.IsInt16())
{
convertMethodName = "AsInt16Enumerable";
}
else if (sourceArrayElementType.IsUInt16())
{
convertMethodName = "AsUInt16Enumerable";
}
else if (sourceArrayElementType.IsInt32())
{
convertMethodName = "AsInt32Enumerable";
}
else if (sourceArrayElementType.IsUInt32())
{
convertMethodName = "AsUInt32Enumerable";
}
else if (sourceArrayElementType.IsInt64())
{
convertMethodName = "AsInt64Enumerable";
}
else if (sourceArrayElementType.IsFloat())
{
convertMethodName = "AsFloatEnumerable";
}
else if (sourceArrayElementType.IsDouble())
{
convertMethodName = "AsDoubleEnumerable";
}
else
{
throw new ArgumentOutOfRangeException("Unknown primitive array element type " + sourceArrayElementType);
}
}
var convertMethod = arrayType.GetMethod(convertMethodName);
// Add code
var tmp = builder.EnsureTemp(sequencePoint, source, frame);
builder.Add(sequencePoint, RCode.Invoke_static, convertMethod, tmp.Result.Register);
var last = builder.Add(sequencePoint, RCode.Move_result_object, tmp.Result.Register);
converted = true;
return(new RLRange(tmp, last, tmp.Result));
}
}
// Do not convert
return(new RLRange(source));
}