private TinyValue Add(TinyUnityParser.AddExpressionContext context)
{
TinyValue lhs = this.Visit(context.expression(0));
TinyValue rhs = this.Visit(context.expression(1));
if (lhs == null || rhs == null)
{
throw new EvalException("Null operators: " + context.op.Type, context);
}
if (lhs.value is float && rhs.value is float)
{
return(new TinyValue((float)lhs.value + (float)rhs.value));
}
if (lhs.isList())
{
List <TinyValue> nlst = lhs.asList();
nlst.Add(rhs);
return(new TinyValue(nlst));
}
if (lhs.isString())
{
return(new TinyValue(lhs.asString() + rhs.value.ToString()));
}
if (rhs.isString())
{
return(new TinyValue(lhs.value.ToString() + rhs.asString()));
}
return(new TinyValue(lhs.value.ToString() + rhs.value.ToString()));
}
public override TinyValue VisitAddExpression([NotNull] TinyUnityParser.AddExpressionContext context)
{
switch (context.op.Type)
{
case TinyUnityLexer.Add:
return(Add(context));
case TinyUnityLexer.Subtract:
return(Subtract(context));
default:
throw new EvalException("Bad operators: " + context.op.Type, context);
}
}
private TinyValue Subtract(TinyUnityParser.AddExpressionContext context)
{
TinyValue lhs = this.Visit(context.expression(0));
TinyValue rhs = this.Visit(context.expression(1));
if (lhs == null || rhs == null)
{
throw new EvalException("Null operators: " + context.op.Type, context);
}
if (lhs.value is float && rhs.value is float)
{
return(new TinyValue((float)lhs.value - (float)rhs.value));
}
if (lhs.isList())
{
List <TinyValue> nlst = lhs.asList();
nlst.Remove(rhs);
return(new TinyValue(nlst));
}
throw new EvalException("Bad operators: " + context.op.Type, context);
}
