public static void Free(AwaitExpressionWalker walker)
{
walker._shouldVisit = true;
walker.StopOnFirstAwaitExpression = false;
walker.AwaitExpressions.Clear();
_cachedInstance = walker;
}
public static AwaitExpressionWalker GetInstance()
{
AwaitExpressionWalker walker = _cachedInstance;
if (walker != null)
{
Debug.Assert(walker.AwaitExpressions.Count == 0);
_cachedInstance = null;
return(walker);
}
return(new AwaitExpressionWalker());
}
public static AwaitExpressionWalker GetInstance()
{
AwaitExpressionWalker walker = _cachedInstance;
if (walker != null)
{
_cachedInstance = null;
return(walker);
}
else
{
return(new AwaitExpressionWalker());
}
}
public static bool ContainsAwaitExpression(ExpressionSyntax expression)
{
AwaitExpressionWalker walker = GetInstance();
walker.StopOnFirstAwaitExpression = true;
walker.Visit(expression);
Debug.Assert(walker.AwaitExpressions.Count <= 1);
bool result = walker.AwaitExpressions.Count == 1;
Free(walker);
return(result);
}
public static void Free(AwaitExpressionWalker walker)
{
walker.Reset();
_cachedInstance = walker;
}