/// <summary>
/// Parsing condition in format [id] [operation] [id]
/// If you want another modification, you may change this function
/// </summary>
/// <param name="left"></param>
private void ParseCondition(LexAnalyzer.Token left)
{
var operation = TokenQueue.Dequeue();
var right = TokenQueue.Dequeue();
InputQueue.Enqueue(new ConditionElement(left, operation, right));
}
private void GetRightNmr(LexAnalyzer.Token token)
{
if (token.Type == LexAnalyzer.TokenTypes.Number)
{
RightValue = Convert.ToInt32(token.Value);
}
else if (token.Type == LexAnalyzer.TokenTypes.Hex)
{
RightValue = Convert.ToInt32(token.Value.Substring(2), 16); // skips 0x prefix
}
else
{
throw new SyntacticException("Unexpected token " + token.ToString());
}
}
/// <summary>
/// Parse token to element
/// </summary>
/// <param name="t">Token to parse</param>
private void PushIntoInput(LexAnalyzer.Token t)
{
switch (t.Type)
{
case LexAnalyzer.TokenTypes.Id:
string upper = t.Value.ToUpper();
switch (upper) /* Keywords parses to specials treeelements, in other case parse it as condition */
{
case "AND":
InputQueue.Enqueue(new TreeElement(TreeCode.And));
break;
case "OR":
InputQueue.Enqueue(new TreeElement(TreeCode.Or));
break;
case "NOT":
InputQueue.Enqueue(new TreeElement(TreeCode.Not));
break;
default:
ParseCondition(t);
break;
}
break;
case LexAnalyzer.TokenTypes.LBracket:
InputQueue.Enqueue(new TreeElement(TreeCode.LBracket));
break;
case LexAnalyzer.TokenTypes.RBracket:
InputQueue.Enqueue(new TreeElement(TreeCode.RBracket));
break;
case LexAnalyzer.TokenTypes.End:
InputQueue.Enqueue(new TreeElement(TreeCode.End));
break;
default:
throw new SyntacticException("Unexpected token " + t.Type.ToString());
}
}
