public static void Free(ContainsYieldWalker walker)
{
walker.SearchForYieldBreak = true;
walker.SearchForYieldReturn = true;
walker.YieldStatement = null;
_cachedInstance = walker;
}
private static bool ContainsYieldCore(BlockSyntax block, TextSpan?span, bool yieldReturn, bool yieldBreak)
{
ContainsYieldWalker walker = Create(span, yieldReturn, yieldBreak);
walker.VisitBlock(block);
return(walker._success);
}
public static ContainsYieldWalker GetInstance()
{
ContainsYieldWalker walker = _cachedInstance;
if (walker != null)
{
Debug.Assert(walker.YieldStatement == null);
_cachedInstance = null;
return(walker);
}
return(new ContainsYieldWalker());
}
public static ContainsYieldWalker GetInstance()
{
ContainsYieldWalker walker = _cachedInstance;
if (walker != null)
{
_cachedInstance = null;
}
else
{
walker = new ContainsYieldWalker();
}
return(walker);
}
public static bool ContainsYield(SyntaxNode node, TextSpan?span = null, bool yieldReturn = true, bool yieldBreak = true)
{
if (node == null)
{
throw new ArgumentNullException(nameof(node));
}
if (node.Kind() == SyntaxKind.LocalFunctionStatement)
{
return(ContainsYield((LocalFunctionStatementSyntax)node, span, yieldReturn, yieldBreak));
}
ContainsYieldWalker walker = Create(span, yieldReturn, yieldBreak);
walker.Visit(node);
return(walker._success);
}
public static bool ContainsYield(StatementSyntax statement, bool searchForYieldReturn = true, bool searchForYieldBreak = true)
{
if (statement == null)
{
throw new ArgumentNullException(nameof(statement));
}
ContainsYieldWalker walker = GetInstance();
walker.SearchForYieldBreak = searchForYieldBreak;
walker.SearchForYieldReturn = searchForYieldReturn;
walker.VisitStatement(statement);
bool success = walker.YieldStatement != null;
Free(walker);
return(success);
}
public static void Free(ContainsYieldWalker walker)
{
walker.Reset();
_cachedInstance = walker;
}
