/// <summary>
/// Ensure that this condition didn't come from a non matching if/elif.
/// </summary>
/// <returns></returns>
protected virtual bool DoesPassElifSanityCheck()
{
System.Type previousCommandType = ParentBlock.GetPreviousActiveCommandType();
var prevCmdIndent = ParentBlock.GetPreviousActiveCommandIndent();
var prevCmd = ParentBlock.GetPreviousActiveCommand();
//handle our matching if or else if in the chain failing and moving to us,
// need to make sure it is the same indent level
if (prevCmd == null ||
prevCmdIndent != IndentLevel ||
!previousCommandType.IsSubclassOf(typeof(Condition)) ||
(prevCmd as Condition).IsLooping)
{
return(false);
}
return(true);
}
public override void OnEnter()
{
if (ParentBlock == null)
{
return;
}
if (!HasNeededProperties())
{
Continue();
return;
}
if (!this.IsElseIf)
{
EvaluateAndContinue();
}
else
{
System.Type previousCommandType = ParentBlock.GetPreviousActiveCommandType();
var prevCmdIndent = ParentBlock.GetPreviousActiveCommandIndent();
//handle our matching if or else if in the chain failing and moving to us,
// need to make sure it is the same indent level
if (prevCmdIndent == IndentLevel && previousCommandType.IsSubclassOf(typeof(Condition)))
{
// Else If behaves the same as an If command
EvaluateAndContinue();
}
else
{
// Else If behaves mostly like an Else command,
// but will also jump to a following Else command.
// Stop if this is the last command in the list
if (CommandIndex >= ParentBlock.CommandList.Count - 1)
{
StopParentBlock();
return;
}
// Find the next End command at the same indent level as this Else If command
int indent = indentLevel;
for (int i = CommandIndex + 1; i < ParentBlock.CommandList.Count; ++i)
{
var command = ParentBlock.CommandList[i];
if (command.IndentLevel == indent)
{
System.Type type = command.GetType();
if (type == typeof(End))
{
// Execute command immediately after the Else or End command
Continue(command.CommandIndex + 1);
return;
}
}
}
// No End command found
StopParentBlock();
}
}
}