/*
Copyright (C) 2011 de4dot@gmail.com
This file is part of de4dot.
de4dot is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
de4dot is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with de4dot. If not, see .
*/
// Create a new type, method, etc, where all generic parameters have been replaced with the
// corresponding generic argument.
using System;
using Mono.Cecil;
using de4dot.blocks;
namespace de4dot.blocks {
public abstract class RefInstance {
protected bool modified = false;
protected void checkModified(object a, object b) {
if (!ReferenceEquals(a, b))
modified = true;
}
}
public class TypeReferenceInstance : RefInstance {
TypeReference typeReference;
GenericInstanceType git;
public static TypeReference make(TypeReference typeReference, GenericInstanceType git) {
if (git == null)
return typeReference;
return new TypeReferenceInstance(typeReference, git).makeInstance();
}
TypeReferenceInstance(TypeReference typeReference, GenericInstanceType git) {
this.typeReference = typeReference;
this.git = git;
}
// Returns same one if nothing was modified
TypeReference makeInstance() {
var rv = makeInstance(typeReference);
return modified ? rv : typeReference;
}
TypeReference makeInstance(TypeReference a) {
if (a == null)
return null;
var type = MemberReferenceHelper.getMemberReferenceType(a);
switch (type) {
case CecilType.ArrayType:
return makeInstanceArrayType((ArrayType)a);
case CecilType.ByReferenceType:
return makeInstanceByReferenceType((ByReferenceType)a);
case CecilType.FunctionPointerType:
return makeInstanceFunctionPointerType((FunctionPointerType)a);
case CecilType.GenericInstanceType:
return makeInstanceGenericInstanceType((GenericInstanceType)a);
case CecilType.GenericParameter:
return makeInstanceGenericParameter((GenericParameter)a);
case CecilType.OptionalModifierType:
return makeInstanceOptionalModifierType((OptionalModifierType)a);
case CecilType.PinnedType:
return makeInstancePinnedType((PinnedType)a);
case CecilType.PointerType:
return makeInstancePointerType((PointerType)a);
case CecilType.RequiredModifierType:
return makeInstanceRequiredModifierType((RequiredModifierType)a);
case CecilType.SentinelType:
return makeInstanceSentinelType((SentinelType)a);
case CecilType.TypeDefinition:
return makeInstanceTypeDefinition((TypeDefinition)a);
case CecilType.TypeReference:
return makeInstanceTypeReference((TypeReference)a);
default:
throw new ApplicationException(string.Format("Unknown cecil type {0}", type));
}
}
ArrayType makeInstanceArrayType(ArrayType a) {
var rv = new ArrayType(makeInstance(a.ElementType));
if (!a.IsVector) {
foreach (var dim in a.Dimensions)
rv.Dimensions.Add(dim);
}
return rv;
}
ByReferenceType makeInstanceByReferenceType(ByReferenceType a) {
return new ByReferenceType(makeInstance(a.ElementType));
}
FunctionPointerType makeInstanceFunctionPointerType(FunctionPointerType a) {
var rv = new FunctionPointerType();
rv.function = MethodReferenceInstance.make(a.function, git);
checkModified(a.function, rv.function);
return rv;
}
GenericInstanceType makeInstanceGenericInstanceType(GenericInstanceType a) {
var rv = new GenericInstanceType(makeInstance(a.ElementType));
foreach (var arg in a.GenericArguments)
rv.GenericArguments.Add(makeInstance(arg));
return rv;
}
TypeReference makeInstanceGenericParameter(GenericParameter a) {
if (!MemberReferenceHelper.compareTypes(a.Owner as TypeReference, git.ElementType))
return a;
modified = true;
return makeInstance(git.GenericArguments[a.Position]);
}
OptionalModifierType makeInstanceOptionalModifierType(OptionalModifierType a) {
return new OptionalModifierType(makeInstance(a.ModifierType), makeInstance(a.ElementType));
}
PinnedType makeInstancePinnedType(PinnedType a) {
return new PinnedType(makeInstance(a.ElementType));
}
PointerType makeInstancePointerType(PointerType a) {
return new PointerType(makeInstance(a.ElementType));
}
RequiredModifierType makeInstanceRequiredModifierType(RequiredModifierType a) {
return new RequiredModifierType(makeInstance(a.ModifierType), makeInstance(a.ElementType));
}
SentinelType makeInstanceSentinelType(SentinelType a) {
return new SentinelType(makeInstance(a.ElementType));
}
TypeReference makeInstanceTypeDefinition(TypeDefinition a) {
return makeInstanceTypeReference(a);
}
TypeReference makeInstanceTypeReference(TypeReference a) {
return a;
}
}
public abstract class MultiTypeRefInstance : RefInstance {
GenericInstanceType git;
public MultiTypeRefInstance(GenericInstanceType git) {
this.git = git;
}
protected TypeReference makeInstance(TypeReference tr) {
var type = TypeReferenceInstance.make(tr, git);
checkModified(type, tr);
return type;
}
protected T getResult(T orig, T newOne) {
return modified ? newOne : orig;
}
}
public class MethodReferenceInstance : MultiTypeRefInstance {
MethodReference methodReference;
public static MethodReference make(MethodReference methodReference, GenericInstanceType git) {
if (git == null)
return methodReference;
return new MethodReferenceInstance(methodReference, git).makeInstance();
}
MethodReferenceInstance(MethodReference methodReference, GenericInstanceType git)
: base(git) {
this.methodReference = methodReference;
}
MethodReference makeInstance() {
var mr = new MethodReference(methodReference.Name, makeInstance(methodReference.MethodReturnType.ReturnType), methodReference.DeclaringType);
mr.HasThis = methodReference.HasThis;
mr.ExplicitThis = methodReference.ExplicitThis;
mr.CallingConvention = methodReference.CallingConvention;
if (methodReference.HasParameters) {
foreach (var param in methodReference.Parameters) {
var newParam = new ParameterDefinition(param.Name, param.Attributes, makeInstance(param.ParameterType));
mr.Parameters.Add(newParam);
}
}
if (methodReference.HasGenericParameters) {
foreach (var param in methodReference.GenericParameters) {
var newParam = new GenericParameter(param.Name, mr);
mr.GenericParameters.Add(newParam);
}
}
return getResult(methodReference, mr);
}
}
public class FieldReferenceInstance : MultiTypeRefInstance {
FieldReference fieldReference;
public static FieldReference make(FieldReference fieldReference, GenericInstanceType git) {
if (git == null)
return fieldReference;
return new FieldReferenceInstance(fieldReference, git).makeInstance();
}
FieldReferenceInstance(FieldReference fieldReference, GenericInstanceType git)
: base(git) {
this.fieldReference = fieldReference;
}
FieldReference makeInstance() {
var fr = new FieldReference(fieldReference.Name, makeInstance(fieldReference.FieldType));
return getResult(fieldReference, fr);
}
}
public class EventReferenceInstance : MultiTypeRefInstance {
EventReference eventReference;
public static EventReference make(EventReference eventReference, GenericInstanceType git) {
if (git == null)
return eventReference;
return new EventReferenceInstance(eventReference, git).makeInstance();
}
EventReferenceInstance(EventReference eventReference, GenericInstanceType git)
: base(git) {
this.eventReference = eventReference;
}
EventReference makeInstance() {
var er = new EventDefinition(eventReference.Name, (EventAttributes)0, makeInstance(eventReference.EventType));
return getResult(eventReference, er);
}
}
public class PropertyReferenceInstance : MultiTypeRefInstance {
PropertyReference propertyReference;
public static PropertyReference make(PropertyReference propertyReference, GenericInstanceType git) {
if (git == null)
return propertyReference;
return new PropertyReferenceInstance(propertyReference, git).makeInstance();
}
PropertyReferenceInstance(PropertyReference propertyReference, GenericInstanceType git)
: base(git) {
this.propertyReference = propertyReference;
}
PropertyReference makeInstance() {
var pr = new PropertyDefinition(propertyReference.Name, (PropertyAttributes)0, makeInstance(propertyReference.PropertyType));
if (propertyReference.Parameters != null) {
foreach (var param in propertyReference.Parameters) {
var newParam = new ParameterDefinition(param.Name, param.Attributes, makeInstance(param.ParameterType));
pr.Parameters.Add(newParam);
}
}
return getResult(propertyReference, pr);
}
}
}