protected override Expression VisitMethodCall(MethodCallExpression node)
{
if (object.ReferenceEquals(node, _expression))
{
FriendlyMessage = _pattern.TryGetFriendlyMessage(_expression, _stack);
return(node);
}
if (node.Object != null)
{
this.Visit(node.Object);
}
object instance = null;
if (_stack.Count > 0)
{
instance = _stack.Pop();
}
var args = new List <object>();
foreach (var arg in node.Arguments)
{
this.Visit(arg);
args.Add(_stack.Pop());
}
var returnValue = node.Method.Invoke(instance, args.Count > 0 ? args.ToArray() : null);
_stack.Push(returnValue);
return(node);
}
private FriendlyMessage?EvaluatePattern(IFriendlyMessagePattern pattern)
{
try
{
if (pattern.IsMatch(_part))
{
foreach (var subPattern in pattern.SubPatterns)
{
var message = EvaluatePattern(subPattern);
if (message != null)
{
return(message);
}
}
var formattedMessage = FriendlyMessageFormatter.GetString(pattern.TryGetFriendlyMessage(_part), _context.EvaluatedExpressions);
return(new FriendlyMessage(formattedMessage, pattern));
}
}
catch
{
return(null);
}
return(null);
}
