public override void Parse(Context context)
{
if (context.Consume(Tokenizer.TokenKind.MINUS))
{
var subZero = new AdditionNode();
var zero = new NumericLiteralNode();
zero.Number = 0;
subZero.LeftSide = zero;
var right = new PrimaryNode();
right.Parse(context);
subZero.RightSides.Add(
new Tuple <Tokenizer.TokenKind, Node>(Tokenizer.TokenKind.MINUS, right)
);
this.Node = subZero;
return;
}
context.Consume(Tokenizer.TokenKind.PLUS);
this.Node = new PrimaryNode();
this.Node.Parse(context);
}
public override void Visit(AdditionNode node)
{
node.LeftSide.Accept(this);
foreach (var pair in node.RightSides)
{
pair.Item2.Accept(this);
this.BinaryOperation(() =>
{
switch (pair.Item1)
{
case Tokenizer.TokenKind.PLUS:
this.Add(" add rax, rdi");
break;
case Tokenizer.TokenKind.MINUS:
this.Add(" sub rax, rdi");
break;
}
});
}
}
public abstract void Visit(AdditionNode node);