private static Result IsCreationCore(RecursiveValues values, SemanticModel semanticModel, CancellationToken cancellationToken)
{
values.Reset();
var result = Result.No;
while (values.MoveNext())
{
switch (IsCreationCore(values.Current, semanticModel, cancellationToken))
{
case Result.Unknown:
if (result == Result.No)
{
result = Result.Unknown;
}
break;
case Result.Yes:
return(Result.Yes);
case Result.No:
break;
case Result.Maybe:
result = Result.Maybe;
break;
default:
throw new ArgumentOutOfRangeException();
}
}
return(result);
}
internal static Result IsAnyCreation(RecursiveValues values, SemanticModel semanticModel, CancellationToken cancellationToken)
{
if (values.IsEmpty)
{
return(Result.No);
}
values.Reset();
var result = Result.No;
while (values.MoveNext())
{
switch (IsCreationCore(values.Current, semanticModel, cancellationToken))
{
case Result.Unknown:
if (result == Result.No)
{
result = Result.Unknown;
}
break;
case Result.Yes:
return(Result.Yes);
case Result.AssumeYes:
result = Result.AssumeYes;
break;
case Result.No:
break;
case Result.AssumeNo:
if (result == Result.No)
{
result = Result.AssumeNo;
}
break;
default:
throw new ArgumentOutOfRangeException();
}
}
return(result);
}
internal static Result IsAnyCachedOrInjected(RecursiveValues values, SemanticModel semanticModel, CancellationToken cancellationToken)
{
if (values.IsEmpty)
{
return(Result.No);
}
var result = Result.No;
values.Reset();
while (values.MoveNext())
{
if (values.Current is ElementAccessExpressionSyntax elementAccess &&
semanticModel.TryGetSymbol(elementAccess.Expression, cancellationToken, out var symbol))
{
var isInjected = IsInjectedCore(symbol);
if (isInjected == Result.Yes)
{
return(Result.Yes);
}
if (isInjected == Result.AssumeYes)
{
result = Result.AssumeYes;
}
using var assignedValues = AssignedValueWalker.Borrow(values.Current, semanticModel, cancellationToken);
using var recursive = RecursiveValues.Borrow(assignedValues, semanticModel, cancellationToken);
isInjected = IsAnyCachedOrInjected(recursive, semanticModel, cancellationToken);
if (isInjected == Result.Yes)
{
return(Result.Yes);
}
if (isInjected == Result.AssumeYes)
{
result = Result.AssumeYes;
}
}
private static Result IsInjectedCore(RecursiveValues values, SemanticModel semanticModel, CancellationToken cancellationToken)
{
if (values.Count == 0)
{
return(Result.No);
}
var result = Result.No;
values.Reset();
while (values.MoveNext())
{
if (values.Current is ElementAccessExpressionSyntax elementAccess)
{
var symbol = semanticModel.GetSymbolSafe(elementAccess.Expression, cancellationToken);
var isInjected = IsInjectedCore(symbol);
if (isInjected == Result.Yes)
{
return(Result.Yes);
}
if (isInjected == Result.Maybe)
{
result = Result.Maybe;
}
using (var assignedValues = AssignedValueWalker.Borrow(values.Current, semanticModel, cancellationToken))
{
using (var recursive = RecursiveValues.Create(assignedValues, semanticModel, cancellationToken))
{
isInjected = IsInjectedCore(recursive, semanticModel, cancellationToken);
if (isInjected == Result.Yes)
{
return(Result.Yes);
}
if (isInjected == Result.Maybe)
{
result = Result.Maybe;
}
}
}
}
else
{
var symbol = semanticModel.GetSymbolSafe(values.Current, cancellationToken);
var isInjected = IsInjectedCore(symbol);
if (isInjected == Result.Yes)
{
return(Result.Yes);
}
if (isInjected == Result.Maybe)
{
result = Result.Maybe;
}
}
}
return(result);
}