private static MethodDefinition CreateFactoryMethod(AssemblyCompiler compiler, DexTargetPackage targetPackage, CustomAttribute attribute, AttributeAnnotationMapping mapping)
{
var targetClass = mapping.AttributeClass; // is this really the right place for the factory methods?
ISourceLocation seqp = null;
var attributeTypeDef = attribute.AttributeType.Resolve();
// create method
string methodName = CreateAttributeFactoryMethodName(targetClass);
MethodDefinition method = new MethodDefinition(targetClass, methodName, new Prototype(mapping.AttributeClass));
method.AccessFlags = AccessFlags.Public | AccessFlags.Static | AccessFlags.Synthetic;
targetClass.Methods.Add(method);
// create method body
MethodBody body = new MethodBody(null);
// Allocate attribute
Register attributeReg = body.AllocateRegister(RCategory.Temp, RType.Object);
body.Instructions.Add(seqp, RCode.New_instance, mapping.AttributeClass, attributeReg);
// collect ctor arguments
List <Register> ctorArgRegs = new List <Register>()
{
attributeReg
};
foreach (var p in attribute.ConstructorArguments)
{
XTypeReference xType = XBuilder.AsTypeReference(compiler.Module, p.Type);
Register[] valueRegs = CreateInitializeValueInstructions(seqp, body, xType, p, compiler, targetPackage);
ctorArgRegs.AddRange(valueRegs);
}
// Invoke ctor
DexLib.MethodReference dctor = attribute.Constructor.GetReference(targetPackage, compiler.Module);
body.Instructions.Add(seqp, RCode.Invoke_direct, dctor, ctorArgRegs.ToArray());
// set field values
foreach (var p in attribute.Fields)
{
var field = GetField(attributeTypeDef, p.Name);
var xField = XBuilder.AsFieldReference(compiler.Module, field);
Register[] valueRegs = CreateInitializeValueInstructions(seqp, body, xField.FieldType, p.Argument, compiler, targetPackage);
body.Instructions.Add(seqp, xField.FieldType.IPut(), xField.GetReference(targetPackage),
valueRegs[0], attributeReg);
}
// set property values
foreach (var p in attribute.Properties)
{
PropertyDefinition property = GetSettableProperty(attributeTypeDef, p.Name);
XTypeReference xType = XBuilder.AsTypeReference(compiler.Module, property.PropertyType);
Register[] valueRegs = CreateInitializeValueInstructions(seqp, body, xType, p.Argument, compiler, targetPackage);
XMethodDefinition xSetMethod = XBuilder.AsMethodDefinition(compiler.Module, property.SetMethod);
body.Instructions.Add(seqp, xSetMethod.Invoke(xSetMethod, null),
xSetMethod.GetReference(targetPackage),
new[] { attributeReg }.Concat(valueRegs).ToArray());
}
// Return attribute
body.Instructions.Add(seqp, RCode.Return_object, attributeReg);
// Register method body
targetPackage.Record(new CompiledMethod()
{
DexMethod = method, RLBody = body
});
// Return method
return(method);
}
/// <summary>
/// Create the body of the invoke method.
/// </summary>
private static MethodBody CreateInvokeBody(ISourceLocation sequencePoint, AssemblyCompiler compiler, DexTargetPackage targetPackage, XMethodDefinition calledMethod, XMethodDefinition invokeMethod, Prototype invokePrototype, Prototype calledMethodPrototype, FieldDefinition instanceField, ClassReference delegateClass)
{
var body = new MethodBody(null);
var rthis = body.AllocateRegister(RCategory.Argument, RType.Object);
foreach (var p in invokePrototype.Parameters)
{
if (p.Type.IsWide())
{
body.AllocateWideRegister(RCategory.Argument);
}
else
{
var type = (p.Type is PrimitiveType) ? RType.Value : RType.Object;
body.AllocateRegister(RCategory.Argument, type);
}
}
var incomingMethodArgs = body.Registers.ToArray();
// Create code
var ins = body.Instructions;
Register instance = null;
if (!calledMethod.IsStatic)
{
// load instance
instance = body.AllocateRegister(RCategory.Temp, RType.Object);
ins.Add(new Instruction(RCode.Iget_object, instance, rthis)
{
Operand = instanceField
});
}
// Invoke
var calledMethodRef = calledMethod.GetReference(targetPackage);
var inputArgs = calledMethod.IsStatic ? incomingMethodArgs.Skip(1).ToArray() : incomingMethodArgs;
// Cast arguments (if needed)
var outputArgs = new List <Register>();
if (!calledMethod.IsStatic)
{
outputArgs.Add(instance);
}
var parameterIndex = 0;
for (var i = calledMethod.IsStatic ? 0 : 1; i < inputArgs.Length;)
{
var invokeType = invokePrototype.Parameters[parameterIndex].Type;
var inputIsWide = invokeType.IsWide();
var calledType = calledMethodPrototype.Parameters[parameterIndex].Type;
if (!invokeType.Equals(calledType))
{
// Add cast / unbox
var source = inputIsWide
? new RegisterSpec(inputArgs[i], inputArgs[i + 1], invokeType)
: new RegisterSpec(inputArgs[i], null, invokeType);
var tmp = ins.Unbox(sequencePoint, source, calledMethod.Parameters[parameterIndex].ParameterType, compiler, targetPackage, body);
outputArgs.Add(tmp.Result.Register);
if (calledType.IsWide())
{
outputArgs.Add(tmp.Result.Register2);
}
}
else
{
outputArgs.Add(inputArgs[i]);
if (calledType.IsWide())
{
outputArgs.Add(inputArgs[i + 1]);
}
}
i += inputIsWide ? 2 : 1;
parameterIndex++;
}
// Actual call
ins.Add(new Instruction(calledMethod.Invoke(calledMethod, null), calledMethodRef, outputArgs.ToArray()));
// Collect return value
var invokeReturnType = invokePrototype.ReturnType;
var calledReturnType = calledMethodPrototype.ReturnType;
var needsBoxing = !invokeReturnType.Equals(calledReturnType);
Instruction returnInstruction;
if (calledReturnType.IsWide())
{
var r = body.AllocateWideRegister(RCategory.Temp);
ins.Add(new Instruction(RCode.Move_result_wide, r.Item1));
if (needsBoxing)
{
// Box
var source = new RegisterSpec(r.Item1, r.Item2, calledReturnType);
var tmp = ins.Box(sequencePoint, source, calledMethod.ReturnType, targetPackage, body);
returnInstruction = new Instruction(RCode.Return_object, tmp.Result.Register);
}
else
{
// Return wide
returnInstruction = new Instruction(RCode.Return_wide, r.Item1);
}
}
else if (calledMethod.ReturnType.IsVoid())
{
// Void return
returnInstruction = new Instruction(RCode.Return_void);
}
else if (calledReturnType is PrimitiveType)
{
// Single register return
var r = body.AllocateRegister(RCategory.Temp, RType.Value);
ins.Add(new Instruction(RCode.Move_result, r));
if (needsBoxing)
{
// Box
var source = new RegisterSpec(r, null, invokeReturnType);
var tmp = ins.Box(sequencePoint, source, calledMethod.ReturnType, targetPackage, body);
returnInstruction = new Instruction(RCode.Return_object, tmp.Result.Register);
}
else
{
// Return
returnInstruction = new Instruction(RCode.Return, r);
}
}
else
{
var r = body.AllocateRegister(RCategory.Temp, RType.Object);
ins.Add(new Instruction(RCode.Move_result_object, r));
if (needsBoxing)
{
// Box
var source = new RegisterSpec(r, null, invokeReturnType);
var tmp = ins.Box(sequencePoint, source, invokeMethod.ReturnType, targetPackage, body);
returnInstruction = new Instruction(RCode.Return_object, tmp.Result.Register);
}
else
{
// Return
returnInstruction = new Instruction(RCode.Return_object, r);
}
}
// Call next delegate (if any)
var next = body.AllocateRegister(RCategory.Temp, RType.Object);
var multicastDelegateType = new ClassReference(targetPackage.NameConverter.GetConvertedFullName("System.MulticastDelegate"));
var nextReference = new FieldReference(multicastDelegateType, "next", multicastDelegateType);
ins.Add(new Instruction(RCode.Iget_object, nextReference, new[] { next, rthis })); // load this.next
var afterCallNext = new Instruction(RCode.Nop);
ins.Add(new Instruction(RCode.If_eqz, afterCallNext, new[] { next })); // if next == null, continue
ins.Add(new Instruction(RCode.Check_cast, delegateClass, new[] { next }));
var nextInvokeMethod = new MethodReference(delegateClass, "Invoke", invokePrototype);
var nextInvokeArgs = new[] { next }.Concat(incomingMethodArgs.Skip(1)).ToArray();
ins.Add(new Instruction(RCode.Invoke_virtual, nextInvokeMethod, nextInvokeArgs));
ins.Add(afterCallNext);
// Add return instructions
ins.Add(returnInstruction);
return(body);
}
/// <summary>
/// Create the current type as class definition.
/// </summary>
internal static DelegateInstanceType Create(
ISourceLocation sequencePoint,
AssemblyCompiler compiler,
DexTargetPackage targetPackage,
ClassDefinition delegateClass,
XMethodDefinition invokeMethod,
Prototype invokePrototype,
XMethodDefinition equalsMethod,
Prototype equalsPrototype,
XMethodDefinition calledMethod)
{
// Prepare called method
var target = targetPackage.DexFile;
var owner = target.GetClass(calledMethod.DeclaringType.GetClassReference(targetPackage).Fullname) ??
targetPackage.GetOrCreateGeneratedCodeClass();
var calledMethodPrototype = PrototypeBuilder.BuildPrototype(compiler, targetPackage, owner, calledMethod);
var calledMethodRef = calledMethod.GetReference(targetPackage);
if (calledMethod.DeclaringType.HasDexImportAttribute())
{
// Delegate method is a Dex import method
}
else
{
// Delegate method is a .NET method
var calledDexMethod = owner.Methods.Single(x => (x.Name == calledMethodRef.Name) && (x.Prototype.Equals(calledMethodRef.Prototype)));
if (calledDexMethod.IsPrivate)
{
calledDexMethod.IsPrivate = false;
calledDexMethod.IsProtected = true;
}
}
var @class = new ClassDefinition();
@class.Name = CreateInstanceTypeName(owner);
@class.Namespace = owner.Namespace;
@class.AccessFlags = AccessFlags.Public | AccessFlags.Final;
owner.InnerClasses.Add(@class);
// Set super class
@class.SuperClass = delegateClass;
// Implement delegate interface
//@class.Interfaces.Add(delegateInterface);
// Get type of instance
XTypeDefinition instanceType = calledMethod.DeclaringType;
TypeReference instanceTypeRef = instanceType.GetReference(targetPackage);
// Add instance field
FieldDefinition instanceField = null;
if (!calledMethod.IsStatic)
{
instanceField = new FieldDefinition();
instanceField.Name = "instance";
instanceField.Owner = @class;
instanceField.Type = instanceTypeRef;
instanceField.AccessFlags = AccessFlags.Private | AccessFlags.Final;
@class.Fields.Add(instanceField);
}
// Add ctor
var ctor = new Dot42.DexLib.MethodDefinition();
ctor.Owner = @class;
ctor.Name = "<init>";
ctor.AccessFlags = AccessFlags.Public | AccessFlags.Constructor;
ctor.Prototype = new Prototype(PrimitiveType.Void);
if (!calledMethod.IsStatic)
{
ctor.Prototype.Parameters.Add(new Parameter(instanceTypeRef, "this"));
}
@class.Methods.Add(ctor);
// Create ctor body
var ctorBody = CreateCtorBody(calledMethod, instanceField, delegateClass);
targetPackage.Record(new CompiledMethod()
{
DexMethod = ctor, RLBody = ctorBody
});
// Add Invoke method
var invoke = new Dot42.DexLib.MethodDefinition(@class, "Invoke", invokePrototype)
{
AccessFlags = AccessFlags.Public
};
@class.Methods.Add(invoke);
// Create body
var invokeBody = CreateInvokeBody(sequencePoint, compiler, targetPackage, calledMethod, invokeMethod, invokePrototype, calledMethodPrototype, instanceField, delegateClass);
targetPackage.Record(new CompiledMethod()
{
DexMethod = invoke, RLBody = invokeBody
});
// Add Equals method
if (null != equalsMethod)
{
var equals = new Dot42.DexLib.MethodDefinition(@class, "equals", equalsPrototype)
{
AccessFlags = AccessFlags.Public
};
@class.Methods.Add(equals);
// Create body
if (!calledMethod.IsStatic)
{
var equalsBody = CreateEqualsBody(sequencePoint, compiler, targetPackage, equalsMethod, equalsPrototype, instanceField, @class);
targetPackage.Record(new CompiledMethod()
{
DexMethod = equals, RLBody = equalsBody
});
}
else
{
var equalsBody = CreateEqualsBody();
targetPackage.Record(new CompiledMethod()
{
DexMethod = equals, RLBody = equalsBody
});
}
}
return(new DelegateInstanceType(calledMethod, @class, ctor));
}
public DelegateInstanceType Create()
{
instanceField = null; // actually at the momennt, we are not called multiple times...
genericMethodTypeFields.Clear();
genericInstanceTypeFields.Clear();
// Prepare called method
var target = targetPackage.DexFile;
var owner = target.GetClass(calledMethod.DeclaringType.GetClassReference(targetPackage).Fullname)
?? targetPackage.GetOrCreateGeneratedCodeClass();
var calledMethodPrototype = PrototypeBuilder.BuildPrototype(compiler, targetPackage, owner, calledMethod);
var calledMethodRef = calledMethod.GetReference(targetPackage);
if (calledMethod.DeclaringType.HasDexImportAttribute())
{
// Delegate method is a Dex import method
}
else
{
// Delegate method is a .NET method
var calledDexMethod = owner.Methods.Single(x => (x.Name == calledMethodRef.Name) && (x.Prototype.Equals(calledMethodRef.Prototype)));
if (calledDexMethod.IsPrivate)
{
calledDexMethod.IsPrivate = false;
calledDexMethod.IsProtected = true;
}
}
var @class = new ClassDefinition
{
Name = CreateInstanceTypeName(owner),
Namespace = owner.Namespace,
AccessFlags = AccessFlags.Public | AccessFlags.Final,
MapFileId = compiler.GetNextMapFileId(),
};
owner.AddInnerClass(@class);
// Set super class
@class.SuperClass = delegateClass;
// Implement delegate interface
//@class.Interfaces.Add(delegateInterface);
// Get type of instance
XTypeDefinition instanceType = calledMethod.DeclaringType;
TypeReference instanceTypeRef = instanceType.GetReference(targetPackage);
// Add ctor
var ctor = new MethodDefinition
{
Owner = @class,
Name = "<init>",
AccessFlags = AccessFlags.Public | AccessFlags.Constructor,
Prototype = new Prototype(PrimitiveType.Void),
};
ctor.Prototype.Unfreeze();
if (!calledMethod.IsStatic)
{
ctor.Prototype.Parameters.Add(new Parameter(instanceTypeRef, "this"));
}
PrototypeBuilder.AddGenericParameters(compiler, targetPackage, calledMethod, ctor.Prototype);
ctor.Prototype.Freeze();
@class.Methods.Add(ctor);
// Add methodInfo field
methodInfoField = new FieldDefinition();
methodInfoField.Name = "methodInfo";
methodInfoField.Owner = @class;
methodInfoField.Type = compiler.GetDot42InternalType("System.Reflection", "MethodInfo").GetReference(targetPackage);
methodInfoField.AccessFlags = AccessFlags.Private | AccessFlags.Final | AccessFlags.Static;
@class.Fields.Add(methodInfoField);
// Add instance field & getTargetImpl method
if (!calledMethod.IsStatic)
{
instanceField = new FieldDefinition();
instanceField.Name = "instance";
instanceField.Owner = @class;
instanceField.Type = instanceTypeRef;
instanceField.AccessFlags = AccessFlags.Private | AccessFlags.Final;
@class.Fields.Add(instanceField);
AddMethod(@class, "GetTargetImpl", new Prototype(FrameworkReferences.Object), AccessFlags.Protected,
CreateGetTargetImplBody());
}
// Add generic instance type and method fields
var gtpa = compiler.GetDot42InternalType(InternalConstants.GenericTypeParameterAnnotation).GetClassReference(targetPackage);
var gmpa = compiler.GetDot42InternalType(InternalConstants.GenericMethodParameterAnnotation).GetClassReference(targetPackage);
foreach (var parameter in ctor.Prototype.Parameters)
{
bool isGtpa = parameter.Annotations.Any(a => a.Type.Equals(gtpa));
bool isGmpa = parameter.Annotations.Any(a => a.Type.Equals(gmpa));
if (isGmpa || isGtpa)
{
var list = isGtpa ? genericInstanceTypeFields : genericMethodTypeFields;
var field = new FieldDefinition();
field.Name = isGtpa ? "$git" : "$gmt";
if (parameter.Type.Equals(FrameworkReferences.Class))
{
field.Name += list.Count + 1;
}
field.Owner = @class;
field.Type = parameter.Type;
field.AccessFlags = AccessFlags.Private | AccessFlags.Final;
@class.Fields.Add(field);
list.Add(field);
}
}
// Create ctor body
var ctorBody = CreateCtorBody();
targetPackage.Record(new CompiledMethod()
{
DexMethod = ctor, RLBody = ctorBody
});
// add class static ctor
AddMethod(@class, "<clinit>", new Prototype(PrimitiveType.Void),
AccessFlags.Public | AccessFlags.Constructor | AccessFlags.Static,
CreateCctorBody());
// Add Invoke method
AddMethod(@class, "Invoke", invokePrototype, AccessFlags.Public, CreateInvokeBody(calledMethodPrototype));
// Add Equals method
var typeOnlyEqualsSuffices = calledMethod.IsStatic && !calledMethod.NeedsGenericInstanceTypeParameter && !calledMethod.NeedsGenericInstanceMethodParameter;
var equalsBody = typeOnlyEqualsSuffices ? CreateEqualsCheckTypeOnlyBody(@class) : CreateEqualsBody(@class);
var equalsPrototype = new Prototype(PrimitiveType.Boolean, new Parameter(multicastDelegateClass, "other"));
AddMethod(@class, "EqualsWithoutInvocationList", equalsPrototype, AccessFlags.Protected, equalsBody);
if (!typeOnlyEqualsSuffices)
{
var hashCodePrototype = new Prototype(PrimitiveType.Int);
AddMethod(@class, "HashCodeWithoutInvocationList", hashCodePrototype, AccessFlags.Protected, CreateHashCodeBody(@class));
}
var clonePrototype = new Prototype(multicastDelegateClass, new Parameter(new ArrayType(multicastDelegateClass), "invocationList"), new Parameter(PrimitiveType.Int, "invocationListLength"));
AddMethod(@class, "CloneWithNewInvocationList", clonePrototype, AccessFlags.Protected,
CreateCloneBody(ctor, @class));
AddMethod(@class, "GetMethodInfoImpl", new Prototype(methodInfoField.Type), AccessFlags.Protected,
CreateGetMethodInfoImplBody());
return(new DelegateInstanceType(calledMethod, @class, ctor));
}
