public static IADNode WhileLoop()
{
MainFSM.GetNextToken();
if (MainFSM.GetNextToken().Type != TokenType.leftRBType)
{
ParserFunctions.SyntaxError("Byl ocekavan znak \'(\'");
}
var result = new ADWhileLoop();
result.Condition = PrecedenceSyntaxAnalysis.Precedence(TokenType.rightRBType);
if (MainFSM.GetNextToken().Type != TokenType.rightRBType)
{
ParserFunctions.SyntaxError("Byl ocekavan znak \')\'");
}
if (MainFSM.GetNextToken().Type != TokenType.leftCBType)
{
ParserFunctions.SyntaxError("Byl ocekavan znak \'{\'");
}
ParserFunctions.STablesStack.Push(new STable());
result.Body = ParserFunctions.statement_list();
if (MainFSM.GetNextToken().Type != TokenType.rightCBType)
{
ParserFunctions.SyntaxError("Byl ocekavan znak \'}\'");
}
ParserFunctions.STablesStack.Pop();
return(result);
}
public static void PrintWhileLoop(ADWhileLoop loop, string tab)
{
Console.WriteLine($"{tab}|- While loop");
Console.WriteLine($"{tab}|\tCondition:");
PrintExpression(loop.Condition, tab + "\t\t");
if (loop.Body.Count() > 0)
{
Console.WriteLine($"{tab}|\tBody:");
foreach (var node in loop.Body)
{
PrintNode(node, tab + "\t\t");
}
}
}
public static void PrintWhileLoop(ADWhileLoop whileLoop, string returnLabel)
{
var conditionLabel = GenerateLabel();
var endLabel = GenerateLabel();
Console.WriteLine($"{conditionLabel}:");
Console.WriteLine("# podminkova cast");
Console.WriteLine(PrintExpression(whileLoop.Condition));
Console.WriteLine("# Vyhodnoceni podminky");
EvalCondition(endLabel);
Console.WriteLine("# telo cyklu");
foreach (var item in whileLoop.Body)
{
PrintNode(item, endLabel, conditionLabel, returnLabel);
}
Console.WriteLine($"jmp {conditionLabel}");
Console.WriteLine($"{endLabel}:");
}