// some nodes don't have direct semantic meaning by themselves and so we need to bind a different node that does
internal protected LanguageSyntaxNode GetBindableSyntaxNode(LanguageSyntaxNode node)
{
Debug.Assert(node != null);
IsBindableNodeVisitor visitor = _isBindableNodeVisitorPool.Allocate();
bool isBindable = false;
while ((object)node != null)
{
int position = node.Position;
var state = node.Parent != null ? BoundNodeFactoryState.InParent : BoundNodeFactoryState.InNode;
var nodeToVisit = node.Parent != null ? node.Parent : node;
visitor.Initialize(position, false, state);
isBindable = visitor.Visit(nodeToVisit);
if (isBindable)
{
break;
}
else
{
node = node.ParentOrStructuredTriviaParent;
}
}
_isBindableNodeVisitorPool.Free(visitor);
return(node ?? this.Root);
}
// We might not have actually been given a bindable expression or statement; the caller can
// give us variable declaration nodes, for example. If we're not at an expression or
// statement, back up until we find one.
public LanguageSyntaxNode GetBindingRoot(LanguageSyntaxNode node)
{
Debug.Assert(node != null);
#if DEBUG
for (LanguageSyntaxNode current = node; current != this.Root; current = current.ParentOrStructuredTriviaParent)
{
// make sure we never go out of Root
Debug.Assert(current != null, "How did we get outside the root?");
}
#endif
IsBindableNodeVisitor visitor = _isBindableNodeVisitorPool.Allocate();
bool isBindable = false;
while ((object)node != null)
{
int position = node.Position;
var state = node.Parent != null ? BoundNodeFactoryState.InParent : BoundNodeFactoryState.InNode;
var nodeToVisit = node.Parent != null ? node.Parent : node;
visitor.Initialize(position, true, state);
isBindable = visitor.Visit(nodeToVisit);
if (isBindable)
{
break;
}
else
{
node = node.ParentOrStructuredTriviaParent;
}
}
_isBindableNodeVisitorPool.Free(visitor);
return(node ?? this.Root);
}
protected virtual bool IsBindableNode(LanguageSyntaxNode node)
{
Debug.Assert(node != null);
IsBindableNodeVisitor visitor = _isBindableNodeVisitorPool.Allocate();
int position = node.Position;
var state = node.Parent != null ? BoundNodeFactoryState.InParent : BoundNodeFactoryState.InNode;
var nodeToVisit = node.Parent != null ? node.Parent : node;
visitor.Initialize(position, true, state);
bool result = visitor.Visit(nodeToVisit);
_isBindableNodeVisitorPool.Free(visitor);
return(result);
}