public override LuryObject VisitPrimary(LuryParser.PrimaryContext context)
{
if (context.True != null)
{
return(LuryBoolean.True);
}
if (context.False != null)
{
return(LuryBoolean.False);
}
if (context.Nil != null)
{
return(LuryNil.Nil);
}
if (context.Expression != null)
{
return(VisitExpression(context.Expression));
}
if (context.Name != null)
{
return(LuryReference.Create(context.Name.Text));
}
return(VisitLiteral(context.Literal));
}
public override LuryObject VisitPostfix_expression(LuryParser.Postfix_expressionContext context)
{
if (context.Left == null)
{
return(VisitChildren(context));
}
var left = VisitPostfix_expression(context.Left);
if (context.Dot != null)
{
return(LuryReference.Create(Dereference(left), context.Dot.Text));
}
if (context.Op != null)
{
var result = Dereference(left);
var reference = left as LuryReference;
if (reference == null)
{
throw new InvalidOperationException();
}
reference.Assign(currentContext,
context.Op.Text == "++"
? CallUnaryOperator(IntrinsicConstants.OperatorInc, result)
: CallUnaryOperator(IntrinsicConstants.OperatorDec, result));
return(result);
}
if (context.Key != null)
{
return(LuryReference.Create(Dereference(left), VisitKey(context.Key)));
}
if (context.Call != null)
{
if (context.Arguments == null)
{
return(LuryFunction.Call(Dereference(left)));
}
var arguments = VisitArgument(context.Arguments);
return(LuryFunction.Call(Dereference(left), ((List <LuryObject>)arguments.Value).ToArray()));
}
throw new InvalidOperationException();
}
