internal override void Accept(NodeVar var)
{
builder.currentLineNumber = var.StartLine;
var.vars.ForEach(def =>
{
if (def.Value == null)
builder.OpNull();
else def.Value.Visit(this);
builder.OpKStore(def.Key);
if (!var.isResultRequired)
builder.OpPop();
});
}
internal virtual void Accept(NodeVar var)
{
builder.currentLineNumber = var.StartLine;
var.vars.ForEach(def =>
{
if (def.Value != null)
def.Value.Visit(this);
else builder.OpNull();
uint local;
builder.AddLocal(def.Key, out local);
builder.OpLStore(local);
if (!var.isResultRequired)
builder.OpPop();
});
}
void ASTVisitor.Accept(NodeVar value)
{
Accept(value);
}
private Node ParseVar()
{
// The first token we'll have is 'var', so skip it.
var var = new NodeVar(Location);
Advance();
// Now, let's get us some variables!
while (true)
{
if (!TokensRemain)
{
log.Error(tokens[-1].location, "End of file reached, expected a variable declaration.");
break;
}
// Variables are all identifiers, so do that.
string name;
ExpectIdentifier(out name, "");
Node value = null;
// Vars don't have to be assigned to initially, they default to null.
// Initialization?
if (Check(ASSIGN))
{
Advance();
value = Expression();
}
// Add it to our var list
var.vars.Add(new KeyValuePair<string, Node>(name, value));
// If there's a comma, we expect another definition:
if (Check(COMMA))
Advance();
else break;
}
return var;
}
