private static UnifiedExpression CreateNext(XElement node)
{
Contract.Requires(node != null);
Contract.Requires(node.Name() == "next");
return
(UnifiedContinue.Create(
CreateSmartExpresion(node.FirstElementOrDefault())));
}
public static UnifiedExpression CreateJumpStatement(XElement node)
{
Contract.Requires(node != null);
Contract.Requires(node.Name() == "jump_statement");
/* jump_statement
* : 'goto' IDENTIFIER ';'
* | 'continue' ';'
* | 'break' ';'
* | 'return' ';'
* | 'return' expression ';'
*/
var firstElement = node.FirstElement();
switch (firstElement.Value)
{
case "goto":
return
(UnifiedGoto.Create(
UnifiedLabelIdentifier.Create(
node.NthElement(1).Value)));
case "continue":
return(UnifiedContinue.Create());
case "break":
return(UnifiedBreak.Create());
case "return":
var expression = node.Element("expression");
if (expression != null)
{
return
(UnifiedReturn.Create(
CreateExpression(expression).First()));
}
return(UnifiedReturn.Create());
default:
throw new InvalidOperationException();
}
}
public override bool Visit(UnifiedContinue element, VisitorArgument arg)
{
Writer.Write("continue ");
return(true);
}
public override bool Visit(UnifiedContinue element, VisitorArgument arg)
{
Writer.Write("continue ");
element.Value.TryAccept(this, arg);
return(true);
}
public override bool Visit(UnifiedContinue element, VisitorArgument arg)
{
Writer.Write("continue ");
return true;
}
public UnifiedElement VisitContinueStatement(
ContinueStatement stmt, object data)
{
return(UnifiedContinue.Create());
}
public override bool Visit(UnifiedContinue element, VisitorArgument arg)
{
Writer.Write("continue ");
element.Value.TryAccept(this, arg);
return true;
}