/// <summary>
/// Searches the scope hierarchy for the given id,
/// should return NoVariable if it is not found
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
protected virtual object GetVariableInternal(string id, bool searchHierarchy)
{
if (vars.ContainsKey(id))
{
return(vars[id]);
}
if (!searchHierarchy)
{
return(RuntimeHost.NoVariable);
}
IScriptScope scope = Parent;
while (scope != null)
{
if (scope.HasVariable(id))
{
return(scope.GetItem(id, true));
}
scope = scope.Parent;
}
return(RuntimeHost.NoVariable);
}
/// <summary>
/// Searches the scope hierarchy for the given id,
/// should return NoVariable if it is not found
/// </summary>
/// <param name="id"></param>
/// <param name="searchHierarchy"></param>
/// <returns></returns>
protected virtual object GetVariableInternal(string id, bool searchHierarchy)
{
IValueReference result;
if (_vars.TryGetValue(id, out result))
{
return(result.Value);
}
if (!searchHierarchy)
{
return(RuntimeHost.NoVariable);
}
IScriptScope scope = Parent;
while (scope != null)
{
if (scope.HasVariable(id))
{
return(scope.GetItem(id, true));
}
scope = scope.Parent;
}
return(RuntimeHost.NoVariable);
}
public object Invoke(IScriptContext context, object[] args)
{
string id = (string)args[0];
IScriptScope scope = context.Scope;
while (scope != null)
{
if (scope.HasVariable(id))
{
return(true);
}
scope = scope.Parent;
}
return(false);
}
/// <summary>
/// Sets variable to the first scope in hierarchy which already has this variable
/// </summary>
/// <param name="id"></param>
/// <param name="value"></param>
/// <returns></returns>
private static void SetToParentScope(IScriptScope parent, string id, object value)
{
IScriptScope scope = parent;
while (scope != null)
{
if (scope.HasVariable(id))
{
scope.SetItem(id, value);
return;
}
scope = scope.Parent;
}
throw new ScriptIdNotFoundException(string.Format("Global name {0} was not found in scopes", id));
//parent.SetItem(id, value);
}
private object GetIndentifierValue(IScriptContext context, string identifier)
{
//object result = context.GetItem(identifier, false);
//if (result != RuntimeHost.NoVariable) return result;
if (IsGlobal)
{
_variable = null;
IScriptScope scope = context.Scope.Parent;
while (scope != null)
{
if (scope.HasVariable(identifier))
{
return(scope.GetItem(identifier, true));
}
scope = scope.Parent;
}
}
else
{
if (_variable != null && _variable.Value != null)
{
return(_variable.Value);
}
object result;
_variable = CreateRef(identifier, context, true, out result);
if (result != RuntimeHost.NoVariable)
{
return(result);
}
}
return(RuntimeHost.HasType(identifier)
? (object)RuntimeHost.GetType(identifier)
: NamespaceResolver.Get(identifier));
}