/// <summary>
/// Returns the first node representing of the specified constructor - full-depth search.
/// </summary>
/// <value>Searches the complete tree looking for the node.</value>
/// <param name="inf">The constructor to search for.</param>
/// <returns>The first node representing of the specified constructor - full-depth search.</returns>
public StaticConstructorDependency this[ConstructorInfo inf]
{
get
{
if (TheConstructor == inf)
{
return(this);
}
else
{
List <StaticConstructorDependency> posDeps = (from deps in Children
where (deps.TheConstructor.Equals(inf))
select deps).ToList();
if (posDeps.Count > 0)
{
return(posDeps.First());
}
else
{
foreach (StaticConstructorDependency child in Children)
{
StaticConstructorDependency posDep = child[inf];
if (posDep != null)
{
return(posDep);
}
}
return(null);
}
}
}
}
/// <summary>
/// Preprocesses the IL ops of the specified method/IL block.
/// </summary>
/// <param name="TheLibrary">The library being compiled.</param>
/// <param name="theMethodInfo">The method to preprocess.</param>
/// <param name="theILBlock">The IL block for the method to preprocess.</param>
private static void PreprocessILOps(ILLibrary TheLibrary, Types.MethodInfo theMethodInfo, ILBlock theILBlock)
{
StaticConstructorDependency staticConstructorDependencyRoot = null;
if (theMethodInfo.UnderlyingInfo is System.Reflection.ConstructorInfo &&
theMethodInfo.IsStatic)
{
System.Reflection.ConstructorInfo aConstructor = (System.Reflection.ConstructorInfo)theMethodInfo.UnderlyingInfo;
staticConstructorDependencyRoot = ILLibrary.TheStaticConstructorDependencyTree[aConstructor];
if (staticConstructorDependencyRoot == null)
{
staticConstructorDependencyRoot = new StaticConstructorDependency()
{
TheConstructor = aConstructor
};
ILLibrary.TheStaticConstructorDependencyTree.Children.Add(staticConstructorDependencyRoot);
}
}
ILPreprocessState preprosState = new ILPreprocessState()
{
TheILLibrary = TheLibrary,
Input = theILBlock
};
for (int i = 0; i < theILBlock.ILOps.Count; i++)
{
ILOp theOp = theILBlock.ILOps[i];
// Remove cast class ops
if ((ILOp.OpCodes)theOp.opCode.Value == ILOp.OpCodes.Castclass)
{
theILBlock.ILOps.RemoveAt(i);
i--;
continue;
}
else if ((ILOp.OpCodes)theOp.opCode.Value == ILOp.OpCodes.Call)
{
if (theOp.MethodToCall != null &&
theOp.MethodToCall.DeclaringType.AssemblyQualifiedName.Contains("mscorlib"))
{
//We do not want to process ops which attempt to call methods in mscorlib!
theILBlock.ILOps.RemoveAt(i);
i--;
//We do not allow calls to methods declared in MSCorLib.
//Some of these calls can just be ignored (e.g. GetTypeFromHandle is
// called by typeof operator).
//Ones which can't be ignored, will result in an error...by virtue of
// the fact that they were ignored when they were required.
//But just to make sure we save ourselves a headache later when
// runtime debugging, output a message saying we ignored the call.
// TODO - IL level comments
// result.ASM.AppendLine("; Call to method defined in MSCorLib ignored:"); // DEBUG INFO
// result.ASM.AppendLine("; " + anILOpInfo.MethodToCall.DeclaringType.FullName + "." + anILOpInfo.MethodToCall.Name); // DEBUG INFO
//If the method is a call to a constructor in MsCorLib:
if (theOp.MethodToCall is System.Reflection.ConstructorInfo)
{
//Then we can presume it was a call to a base-class constructor (e.g. the Object constructor)
// and so we just need to remove any args that were loaded onto the stack.
// TODO: result.ASM.AppendLine("; Method to call was constructor so removing params"); // DEBUG INFO
//Remove args from stack
//If the constructor was non-static, then the first arg is the instance reference.
if (!theOp.MethodToCall.IsStatic)
{
i++;
theILBlock.ILOps.Insert(i, new ILOp()
{
opCode = System.Reflection.Emit.OpCodes.Pop
});
}
foreach (System.Reflection.ParameterInfo anInfo in theOp.MethodToCall.GetParameters())
{
i++;
theILBlock.ILOps.Insert(i, new ILOp()
{
opCode = System.Reflection.Emit.OpCodes.Pop
});
}
}
}
}
try
{
ILOp ConverterOp = TargetArchitecture.TargetILOps[(ILOp.OpCodes)theOp.opCode.Value];
ConverterOp.Preprocess(preprosState, theOp);
if (staticConstructorDependencyRoot != null)
{
//Create our static constructor dependency tree
//Each of these ops could try to access a static method or field
switch ((ILOp.OpCodes)theOp.opCode.Value)
{
case ILOp.OpCodes.Call:
//Check if the method to call is static and not a constructor itself
//If so, we must add the declaring type's static constructors to the tree
if(theOp.ValueBytes != null && theOp.ValueBytes.Length > 0)
{
int metadataToken = Utilities.ReadInt32(theOp.ValueBytes, 0);
System.Reflection.MethodBase methodBaseInf = theMethodInfo.UnderlyingInfo.Module.ResolveMethod(metadataToken);
if (!(methodBaseInf.IsConstructor || methodBaseInf is System.Reflection.ConstructorInfo))
{
System.Reflection.MethodInfo methodInf = (System.Reflection.MethodInfo)methodBaseInf;
System.Reflection.ConstructorInfo[] staticConstructors =
methodInf.DeclaringType.GetConstructors(System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.Public)
.Concat(methodInf.DeclaringType.GetConstructors(System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.NonPublic))
.ToArray();
if (staticConstructors.Length > 0)
{
System.Reflection.ConstructorInfo TheConstructor = staticConstructors[0];
if (staticConstructorDependencyRoot[TheConstructor] == null)
{
staticConstructorDependencyRoot.Children.Add(new StaticConstructorDependency()
{
TheConstructor = TheConstructor
});
}
}
}
}
break;
case ILOp.OpCodes.Ldsfld:
case ILOp.OpCodes.Ldsflda:
case ILOp.OpCodes.Stsfld:
{
int metadataToken = Utilities.ReadInt32(theOp.ValueBytes, 0);
System.Reflection.FieldInfo fieldInf = theMethodInfo.UnderlyingInfo.Module.ResolveField(metadataToken);
System.Reflection.ConstructorInfo[] staticConstructors = fieldInf.DeclaringType.GetConstructors(System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.Public)
.Concat(fieldInf.DeclaringType.GetConstructors(System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.NonPublic))
.ToArray();
if (staticConstructors.Length > 0)
{
System.Reflection.ConstructorInfo TheConstructor = staticConstructors[0];
if (staticConstructorDependencyRoot[TheConstructor] == null)
{
staticConstructorDependencyRoot.Children.Add(new StaticConstructorDependency()
{
TheConstructor = TheConstructor
});
}
}
}
break;
}
}
}
catch (KeyNotFoundException)
{
//Ignore - will be caught by Il scanner
}
catch (Exception ex)
{
Logger.LogError("ILPRE", theILBlock.TheMethodInfo.ToString(), 0,
"Il Preprocessor error: PreprocessILOps: " + ex.Message);
}
}
}