public object Evaluate(int line, Context context, object[] args)
{
object result = null;
if (args.Length != m_argNames.Length)
throw new EvaluateException(line, "{0} method takes {1}, not {2}.", Name, DoGetArgsStr(m_argNames.Length), DoGetArgsStr(args.Length));
int depth = context.PushLocals();
if (depth > 256)
throw new EvaluateException(line, "Method calls have recursed more than 256 times");
for (int i = 0; i < args.Length; ++i)
context.AddLocal(m_argNames[i], args[i]);
foreach (Statement statement in m_statements)
{
try
{
result = statement.Evaluate(context);
}
catch (ReturnException e)
{
result = e.Result;
break;
}
}
context.PopLocals();
return result;
}
public override object Evaluate(Context context)
{
Log.WriteLine("Refactor Evaluate", "{0}: Let", Line);
for (int i = 0; i < m_locals.Length; ++i)
{
object value = m_values[i].Evaluate(context);
context.AddLocal(m_locals[i], value);
}
object result = null;
foreach (Statement statement in m_block)
{
result = statement.Evaluate(context);
}
for (int i = 0; i < m_locals.Length; ++i)
{
context.RemoveLocal(m_locals[i]);
}
return result;
}
public override object Evaluate(Context context)
{
Log.WriteLine("Refactor Evaluate", "{0}: For", Line);
object result = m_elements.Evaluate(context);
object[] elements = (object[]) result;
if (elements == null && result != null)
throw new EvaluateException(m_elements.Line, "For statement should return a Sequence, but was a {0}.", RefactorType.GetName(result.GetType()));
result = null;
if (elements != null)
{
foreach (object element in elements)
{
context.AddLocal(m_local, element);
if (DoIsValidElement(context))
{
foreach (Statement statement in m_block)
{
result = statement.Evaluate(context);
}
}
context.RemoveLocal(m_local);
}
}
return result;
}
