private LispList <Pair <EdgeTag, Subroutine> > InsertInvariant(CFGBlock from, LispList <Pair <EdgeTag, Subroutine> > list,
Method calledMethod, ref TypeNode type,
LispList <Edge <CFGBlock, EdgeTag> > context)
{
IMetaDataProvider metadataDecoder = this.SubroutineFacade.MetaDataProvider;
Property property;
if (metadataDecoder.IsPropertySetter(calledMethod, out property) &&
(metadataDecoder.IsAutoPropertyMember(calledMethod) || WithinConstructor(from, context)))
{
return(list);
}
if (metadataDecoder.IsConstructor(calledMethod))
{
type = metadataDecoder.DeclaringType(calledMethod);
}
Subroutine invariant = this.SubroutineFacade.GetInvariant(type);
if (invariant != null)
{
var methodCallBlock = from as MethodCallBlock <Label>;
if (methodCallBlock != null)
{
EdgeTag first = methodCallBlock.IsNewObj ? EdgeTag.AfterNewObj : EdgeTag.AfterCall;
return(list.Cons(new Pair <EdgeTag, Subroutine> (first, invariant)));
}
}
return(list);
}
public MethodSubroutine(SubroutineFacade SubroutineFacade,
Method method, Label startLabel,
SubroutineWithHandlersBuilder <Label, Handler> builder) : base(SubroutineFacade, startLabel, builder)
{
this.method = method;
IMetaDataProvider metaDataProvider = this.SubroutineFacade.MetaDataProvider;
builder.BuildBlocks(startLabel, this);
BlockWithLabels <Label> targetBlock = GetTargetBlock(startLabel);
Commit();
TypeNode type = metaDataProvider.DeclaringType(method);
Subroutine invariant = this.SubroutineFacade.GetInvariant(type);
if (invariant != null && !metaDataProvider.IsConstructor(method) && !metaDataProvider.IsStatic(method))
{
AddEdgeSubroutine(Entry, targetBlock, invariant, EdgeTag.Entry);
Subroutine requires = this.SubroutineFacade.GetRequires(method);
if (requires != null)
{
AddEdgeSubroutine(Entry, targetBlock, requires, EdgeTag.Entry);
}
}
else
{
AddEdgeSubroutine(Entry, targetBlock, this.SubroutineFacade.GetRequires(method), EdgeTag.Entry);
}
if (this.blocks_ending_in_return_point == null)
{
return;
}
Subroutine ensures = this.SubroutineFacade.GetEnsures(method);
bool putInvariantAfterExit = !metaDataProvider.IsStatic(method) &&
!metaDataProvider.IsFinalizer(method) && !metaDataProvider.IsDispose(method);
foreach (var block in this.blocks_ending_in_return_point)
{
if (putInvariantAfterExit)
{
AddEdgeSubroutine(block, Exit, invariant, EdgeTag.Exit);
}
AddEdgeSubroutine(block, Exit, ensures, EdgeTag.Exit);
}
if (ensures != null)
{
throw new NotImplementedException();
}
this.blocks_ending_in_return_point = null;
}
public override LispList <Pair <EdgeTag, Subroutine> > GetOrdinaryEdgeSubroutines(CFGBlock from, CFGBlock to, LispList <Edge <CFGBlock, EdgeTag> > context)
{
IMetaDataProvider metadataDecoder = this.SubroutineFacade.MetaDataProvider;
var apc = new APC(to, 0, context);
DecoratorHelper.Push(this);
try {
LispList <Pair <EdgeTag, Subroutine> > list = DecoratorHelper.Dispatch <IEdgeSubroutineAdaptor> (this).GetOrdinaryEdgeSubroutinesInternal(from, to, context);
if (apc.InsideContract)
{
if (context != null && !list.IsEmpty())
{
Method calledMethod;
bool isNewObj;
bool isVirtual;
if (@from.IsMethodCallBlock(out calledMethod, out isNewObj, out isVirtual) && isVirtual && ((IStackInfo)this).IsCallOnThis(new APC(@from, 0, null)))
{
TypeNode type = metadataDecoder.DeclaringType(calledMethod);
do
{
if (context.Head.Tag.Is(EdgeTag.InheritedMask) || context.Head.Tag.Is(EdgeTag.ExtraMask) || context.Head.Tag.Is(EdgeTag.OldMask))
{
context = context.Tail;
}
else
{
Method calledMethod2;
bool isNewObj2;
bool isVirtual2;
if (context.Head.Tag.Is(EdgeTag.AfterMask) && context.Head.From.IsMethodCallBlock(out calledMethod2, out isNewObj2, out isVirtual2))
{
TypeNode sub = metadataDecoder.DeclaringType(calledMethod2);
if (metadataDecoder.DerivesFrom(sub, type))
{
type = sub;
}
if (!DecoratorHelper.Dispatch <IStackInfo> (this).IsCallOnThis(new APC(context.Head.From, 0, null)))
{
break;
}
}
else if (context.Head.Tag.Is(EdgeTag.BeforeMask) && context.Head.To.IsMethodCallBlock(out calledMethod2, out isNewObj2, out isVirtual2))
{
TypeNode sub = metadataDecoder.DeclaringType(calledMethod2);
if (metadataDecoder.DerivesFrom(sub, type))
{
type = sub;
}
if (!DecoratorHelper.Dispatch <IStackInfo> (this).IsCallOnThis(new APC(context.Head.To, 0, null)))
{
break;
}
}
else if (context.Head.Tag == EdgeTag.Exit)
{
var methodInfo = context.Head.From.Subroutine as IMethodInfo;
if (methodInfo != null)
{
TypeNode sub = metadataDecoder.DeclaringType(methodInfo.Method);
if (metadataDecoder.DerivesFrom(sub, type))
{
type = sub;
}
}
break;
}
else
{
if (context.Head.Tag != EdgeTag.Entry)
{
return(list);
}
var methodInfo = context.Head.From.Subroutine as IMethodInfo;
if (methodInfo != null)
{
TypeNode sub = metadataDecoder.DeclaringType(methodInfo.Method);
if (metadataDecoder.DerivesFrom(sub, type))
{
type = sub;
}
}
break;
}
context = context.Tail;
}
} while (!context.IsEmpty());
Method implementingMethod;
if (!metadataDecoder.Equal(type, metadataDecoder.DeclaringType(calledMethod)) &&
metadataDecoder.TryGetImplementingMethod(type, calledMethod, out implementingMethod))
{
list = SpecializedEnsures(list, this.SubroutineFacade.GetEnsures(calledMethod), this.SubroutineFacade.GetEnsures(implementingMethod));
}
}
}
}
else
{
Method calledMethod;
bool isNewObj;
bool isVirtual;
if (@from.IsMethodCallBlock(out calledMethod, out isNewObj, out isVirtual))
{
if (DecoratorHelper.Dispatch <IStackInfo> (this).IsCallOnThis(new APC(@from, 0, null)))
{
var methodInfo = @from.Subroutine as IMethodInfo;
if (methodInfo != null)
{
TypeNode bestType = metadataDecoder.DeclaringType(methodInfo.Method);
Method implementingMethod;
if (isVirtual && metadataDecoder.TryGetImplementingMethod(bestType, calledMethod, out implementingMethod))
{
list = SpecializedEnsures(list, this.SubroutineFacade.GetEnsures(calledMethod), this.SubroutineFacade.GetEnsures(implementingMethod));
}
list = InsertInvariant(@from, list, calledMethod, ref bestType, context);
}
}
}
}
return(list);
} finally {
DecoratorHelper.Pop();
}
}
public override bool TrySetType(TypeNode expectedType, IMetaDataProvider metaDataProvider, out TypeNode resultType)
{
if (typeof(T) == typeof(Parameter))
{
var p = (Parameter)(object)this.Element;
TypeNode type = metaDataProvider.ParameterType(p);
this.isManagedPointer = metaDataProvider.IsManagedPointer(type);
ResultType = resultType = metaDataProvider.ManagedPointer(type);
return(true);
}
if (typeof(T) == typeof(Field))
{
var f = (Field)(object)this.Element;
TypeNode type = metaDataProvider.FieldType(f);
this.isStatic = metaDataProvider.IsStatic(f);
this.isManagedPointer = metaDataProvider.IsManagedPointer(type);
ResultType = resultType = metaDataProvider.ManagedPointer(type);
TypeNode declaringType = metaDataProvider.DeclaringType(f);
if (metaDataProvider.IsManagedPointer(expectedType))
{
expectedType = metaDataProvider.ElementType(expectedType);
}
expectedType = metaDataProvider.Unspecialized(expectedType);
if (!metaDataProvider.IsStatic(f) && declaringType.Equals(expectedType) &&
(!metaDataProvider.DerivesFrom(expectedType, declaringType) ||
!metaDataProvider.IsProtected(f) && !metaDataProvider.IsPublic(f)))
{
this.castTo = metaDataProvider.FullName(declaringType);
}
return(true);
}
if (typeof(T) == typeof(Local))
{
var local = (Local)(object)this.Element;
TypeNode type = metaDataProvider.LocalType(local);
this.isManagedPointer = metaDataProvider.IsManagedPointer(type);
ResultType = resultType = metaDataProvider.ManagedPointer(type);
return(true);
}
if (typeof(T) == typeof(Method))
{
var method = (Method)(object)this.Element;
ResultType = resultType = !IsAddressOf
? metaDataProvider.ReturnType(method)
: metaDataProvider.ManagedPointer(metaDataProvider.ReturnType(method));
if (metaDataProvider.IsManagedPointer(expectedType))
{
expectedType = metaDataProvider.ElementType(expectedType);
}
expectedType = metaDataProvider.Unspecialized(expectedType);
TypeNode declaringType = metaDataProvider.DeclaringType(method);
if (!metaDataProvider.IsStatic(method) && declaringType.Equals(expectedType) &&
(!metaDataProvider.DerivesFrom(expectedType, declaringType) ||
!metaDataProvider.IsProtected(method) && !metaDataProvider.IsPublic(method)))
{
this.castTo = metaDataProvider.FullName(declaringType);
}
return(true);
}
ResultType = resultType = default(TypeNode);
return(false);
}