private IfCode GetIfCode(XElement element)
{
var result = new IfCode();
XElement elementCondition = element.Child("If.Condition");
result.Condition = GetValueOfArgument(elementCondition.Elements().FirstOrDefault());
XElement elementThen = element.Child("If.Then");
if (elementThen != null)
{
result.Then = Parse(elementThen.Elements().FirstOrDefault())?.WrapInSequence();
}
else
{
result.Then = new Sequence();
}
XElement elementElse = element.Child("If.Else");
if (elementElse != null)
{
result.Else = Parse(elementElse.Elements().FirstOrDefault())?.WrapInSequence();
}
// TODO: elseif
return(result);
}
private void WriteIfCode(StringWriter writer, IfCode ifCode, int tabs)
{
writer.WriteLineTabs($"if ({ifCode.Condition})", tabs);
WriteConstruction(writer, ifCode.Then, tabs + 1);
if (ifCode.Else != null)
{
writer.WriteLineTabs("else", tabs);
WriteConstruction(writer, ifCode.Else, tabs + 1);
}
}
public void Interpret()
{
if (Interpreter.Interpret(this, Condition).value is bool condition)
{
if (condition)
{
IfCode.Interpret();
}
else
{
ElseCode?.Interpret();
}
}
else
{
throw new ArgumentException("Logical expression was expected");
}
}
public void Print(int offset = 0)
{
for (int i = 0; i < offset; i++)
{
Console.Write(" ");
}
Console.WriteLine($"ConditionBlock {{{string.Join(" ", Condition.Traverse())}}}:");
IfCode.Print(offset + 1);
if (ElseCode != null)
{
for (var i = 0; i < offset; i++)
{
Console.Write(" ");
}
Console.WriteLine("ElseCode:");
ElseCode.Print(offset + 1);
}
}
