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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 TypeInstanceResolver {
Type type;
Dictionary<string, List<MethodBase>> methods;
Dictionary<string, List<FieldInfo>> fields;
public TypeInstanceResolver(Type type, ITypeDefOrRef typeRef) {
this.type = ResolverUtils.MakeInstanceType(type, typeRef);
}
public FieldInfo Resolve(IField fieldRef) {
InitFields();
List<FieldInfo> list;
if (!fields.TryGetValue(fieldRef.Name.String, out list))
return null;
fieldRef = GenericArgsSubstitutor.Create(fieldRef, fieldRef.DeclaringType.TryGetGenericInstSig());
foreach (var field in list) {
if (ResolverUtils.CompareFields(field, fieldRef))
return field;
}
return null;
}
void InitFields() {
if (fields != null)
return;
fields = new Dictionary<string, List<FieldInfo>>(StringComparer.Ordinal);
var flags = BindingFlags.DeclaredOnly | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.Instance;
foreach (var field in type.GetFields(flags)) {
List<FieldInfo> list;
if (!fields.TryGetValue(field.Name, out list))
fields[field.Name] = list = new List<FieldInfo>();
list.Add(field);
}
}
public MethodBase Resolve(IMethod methodRef) {
InitMethods();
List<MethodBase> list;
if (!methods.TryGetValue(methodRef.Name.String, out list))
return null;
methodRef = GenericArgsSubstitutor.Create(methodRef, methodRef.DeclaringType.TryGetGenericInstSig());
foreach (var method in list) {
if (ResolverUtils.CompareMethods(method, methodRef))
return method;
}
return null;
}
void InitMethods() {
if (methods != null)
return;
methods = new Dictionary<string, List<MethodBase>>(StringComparer.Ordinal);
var flags = BindingFlags.DeclaredOnly | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.Instance;
foreach (var method in ResolverUtils.GetMethodBases(type, flags)) {
List<MethodBase> list;
if (!methods.TryGetValue(method.Name, out list))
methods[method.Name] = list = new List<MethodBase>();
list.Add(method);
}
}
}
}
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