public override PipFilter Canonicalize(FilterCanonicalizer canonicalizer)
{
var canonInner = Inner.Canonicalize(canonicalizer);
var canonFilter = CreateFilter(canonInner);
// Verify that closure mode is preserved
Contract.Assert(canonFilter.ClosureMode == ClosureMode);
return(canonicalizer.GetOrAdd(canonFilter));
}
/// <inheritdoc/>
public override PipFilter Canonicalize(FilterCanonicalizer canonicalizer)
{
return(canonicalizer.GetOrAdd(this));
}
/// <summary>
/// Produces a new canonicalized filter.
/// </summary>
public virtual PipFilter Canonicalize(FilterCanonicalizer canonicalizer)
{
return(canonicalizer.GetOrAdd(this));
}
/// <inheritdoc/>
public override PipFilter Canonicalize(FilterCanonicalizer canonicalizer)
{
var canonInner = Inner.Canonicalize(canonicalizer);
return(canonicalizer.GetOrAdd(new NegatingFilter(canonInner)));
}
/// <inheritdoc/>
public override PipFilter Canonicalize(FilterCanonicalizer canonicalizer)
{
return(canonicalizer.GetOrAdd(Instance));
}