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/*
Copyright (C) 2011-2015 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 <http://www.gnu.org/licenses/>.
*/
using System;
using System.Collections.Generic;
using System.Reflection;
using dnlib.DotNet;
using de4dot.blocks;
namespace AssemblyData.methodsrewriter {
class MGenericParameter {
}
class AssemblyResolver {
Dictionary<string, List<TypeResolver>> types = new Dictionary<string, List<TypeResolver>>(StringComparer.Ordinal);
List<MethodBase> globalMethods;
List<FieldInfo> globalFields;
Assembly assembly;
public AssemblyResolver(string asmName) {
assembly = Assembly.Load(new AssemblyName(asmName));
InitTypes();
}
void InitTypes() {
foreach (var type in assembly.GetTypes()) {
string key = (type.Namespace ?? "") + "." + type.Name;
List<TypeResolver> list;
if (!types.TryGetValue(key, out list))
types[key] = list = new List<TypeResolver>();
list.Add(new TypeResolver(type));
}
}
TypeResolver GetTypeResolver(ITypeDefOrRef typeRef) {
if (typeRef == null)
return null;
var scopeType = typeRef.ScopeType;
var key = scopeType.Namespace + "." + scopeType.TypeName;
List<TypeResolver> list;
if (!types.TryGetValue(key, out list))
return null;
if (scopeType is TypeDef) {
foreach (var resolver in list) {
if (resolver.type.MetadataToken == scopeType.MDToken.Raw)
return resolver;
}
}
foreach (var resolver in list) {
if (ResolverUtils.CompareTypes(resolver.type, scopeType))
return resolver;
}
return null;
}
public FieldInfo Resolve(IField fieldRef) {
var resolver = GetTypeResolver(fieldRef.DeclaringType);
if (resolver != null)
return resolver.Resolve(fieldRef);
return ResolveGlobalField(fieldRef);
}
FieldInfo ResolveGlobalField(IField fieldRef) {
InitGlobalFields();
foreach (var globalField in globalFields) {
if (ResolverUtils.CompareFields(globalField, fieldRef))
return globalField;
}
return null;
}
void InitGlobalFields() {
if (globalFields != null)
return;
globalFields = new List<FieldInfo>();
var flags = BindingFlags.DeclaredOnly | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.Instance;
foreach (var module in assembly.GetModules(true)) {
foreach (var method in module.GetFields(flags))
globalFields.Add(method);
}
}
public MethodBase Resolve(IMethod methodRef) {
var resolver = GetTypeResolver(methodRef.DeclaringType);
if (resolver != null)
return resolver.Resolve(methodRef);
return ResolveGlobalMethod(methodRef);
}
MethodBase ResolveGlobalMethod(IMethod methodRef) {
InitGlobalMethods();
foreach (var globalMethod in globalMethods) {
if (ResolverUtils.CompareMethods(globalMethod, methodRef))
return globalMethod;
}
return null;
}
void InitGlobalMethods() {
if (globalMethods != null)
return;
globalMethods = new List<MethodBase>();
var flags = BindingFlags.DeclaredOnly | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.Instance;
foreach (var module in assembly.GetModules(true)) {
foreach (var method in module.GetMethods(flags))
globalMethods.Add(method);
}
}
public Type Resolve(ITypeDefOrRef typeRef) {
var resolver = GetTypeResolver(typeRef);
if (resolver != null)
return resolver.type;
var ts = typeRef as TypeSpec;
if (ts != null && ts.TypeSig is GenericSig)
return typeof(MGenericParameter);
return null;
}
public override string ToString() {
return assembly.ToString();
}
}
}
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