public override IElement CreateCopy()
{
CaseSwitchStatement e = new CaseSwitchStatement();
e.AddChildren(this.CopyChildren());
return(e);
}
private static void Parse(MoveInfo parentInfo, ParsingInfo parsingInfo, ScriptInfo scriptInfo)
{
CaseSwitchStatement caseSwitch = new CaseSwitchStatement();
MoveInfo moveInfo = new MoveInfo(parentInfo);
// expression
IElement next = moveInfo.FindNextBlack(SearchDirection.LeftToRight);
Expression exp = Expression.Parse(moveInfo, parsingInfo, scriptInfo);
if (exp == null)
{
throw new SyntaxException("Could not parse case expression", parentInfo.GetErrorInfo());
}
// terminal
IElement tryTerminal = moveInfo.FindNextBlack(SearchDirection.LeftToRight);
if (tryTerminal == null || !tryTerminal.IsTT(TokenType.Colon))
{
throw new SyntaxException("Missing directive ':'?", parentInfo.GetErrorInfo());
}
// statements
IElement nextStatement = moveInfo.FindNextBlack(SearchDirection.LeftToRight);
while (nextStatement != null) // end of switch
{
if (CaseSwitchStatement.Check(moveInfo, parsingInfo, scriptInfo, false) ||
DefaultSwitchStatement.Check(moveInfo, parsingInfo, scriptInfo, false))
{
break;
}
Statement.Check(moveInfo, parsingInfo, scriptInfo);
nextStatement = moveInfo.FindNextBlack(SearchDirection.LeftToRight);
}
// build
int startIndex = parentInfo.CurrentIndex;
int length = (moveInfo.CurrentIndex) - startIndex;
caseSwitch.AddChildren(parentInfo.CurrentElements.GetRange(startIndex, length));
parentInfo.Replace(length, caseSwitch);
}