.NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!
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// Copyright (c) 2011 AlphaSierraPapa for the SharpDevelop Team
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using ICSharpCode.Decompiler;
using Mono.Cecil;
using ICSharpCode.Decompiler.ILAst;
using Mono.Cecil.Cil;
namespace ICSharpCode.ILSpy.TreeNodes.Analyzer
{
internal static class Helpers
{
public static bool IsReferencedBy(TypeDefinition type, TypeReference typeRef)
{
// TODO: move it to a better place after adding support for more cases.
if (type == null)
throw new ArgumentNullException("type");
if (typeRef == null)
throw new ArgumentNullException("typeRef");
if (type == typeRef)
return true;
if (type.Name != typeRef.Name)
return false;
if (type.Namespace != typeRef.Namespace)
return false;
if (type.DeclaringType != null || typeRef.DeclaringType != null) {
if (type.DeclaringType == null || typeRef.DeclaringType == null)
return false;
if (!IsReferencedBy(type.DeclaringType, typeRef.DeclaringType))
return false;
}
return true;
}
public static MemberReference GetOriginalCodeLocation(MemberReference member)
{
if (member is MethodDefinition)
return GetOriginalCodeLocation((MethodDefinition)member);
return member;
}
public static MethodDefinition GetOriginalCodeLocation(MethodDefinition method)
{
if (method.IsCompilerGenerated()) {
return FindMethodUsageInType(method.DeclaringType, method) ?? method;
}
var typeUsage = GetOriginalCodeLocation(method.DeclaringType, method);
return typeUsage ?? method;
}
public static MethodDefinition GetOriginalCodeLocation(TypeDefinition type, MethodDefinition method)
{
if (type != null && type.DeclaringType != null && type.IsCompilerGenerated()) {
MethodDefinition constructor = GetTypeConstructor(type);
return FindMethodUsageInType(type.DeclaringType, constructor);
}
return null;
}
private static MethodDefinition GetTypeConstructor(TypeDefinition type)
{
foreach (MethodDefinition method in type.Methods) {
if (method.Name == ".ctor")
return method;
}
return null;
}
private static MethodDefinition FindMethodUsageInType(TypeDefinition type, MethodDefinition analyzedMethod)
{
string name = analyzedMethod.Name;
foreach (MethodDefinition method in type.Methods) {
bool found = false;
if (!method.HasBody)
continue;
foreach (Instruction instr in method.Body.Instructions) {
MethodReference mr = instr.Operand as MethodReference;
if (mr != null && mr.Name == name &&
Helpers.IsReferencedBy(analyzedMethod.DeclaringType, mr.DeclaringType) &&
mr.Resolve() == analyzedMethod) {
found = true;
break;
}
}
method.Body = null;
if (found)
return method;
}
return null;
}
}
}