private string DicePoolModOpToString(Expr.DicePool.ModOperator modOp)
{
switch (modOp)
{
case Expr.DicePool.ModOperator.Equal:
return("=");
case Expr.DicePool.ModOperator.Less:
return("<");
case Expr.DicePool.ModOperator.LessEqual:
return("<=");
case Expr.DicePool.ModOperator.Greater:
return(">");
case Expr.DicePool.ModOperator.GreaterEqual:
return(">=");
default:
return("??");
}
}
private void GetDicePoolModifiers(out Expr.DicePool.DicePoolMod mod, out Expr.DicePool.ModOperator modOp, out Expr modValue)
{
Token tMod = Consume(TokenType.Identifier, "Expect dice pool modifier after dice pool.");
switch (tMod.Lexeme)
{
case "kh":
mod = Expr.DicePool.DicePoolMod.KeepHighest;
break;
case "kl":
mod = Expr.DicePool.DicePoolMod.KeepLowest;
break;
case "dh":
mod = Expr.DicePool.DicePoolMod.DropHighest;
break;
case "dl":
mod = Expr.DicePool.DicePoolMod.DropLowest;
break;
case "cs":
mod = Expr.DicePool.DicePoolMod.CountSuccesses;
break;
default:
throw new ParserException($"Expected dice pool modifier, got '{tMod}'.");
}
// Now there should be a operator
Token tModOp = Peek();
modValue = null;
switch (tModOp.Type)
{
case TokenType.Equal:
modOp = Expr.DicePool.ModOperator.Equal;
Advance();
break;
case TokenType.Less:
modOp = Expr.DicePool.ModOperator.Less;
Advance();
break;
case TokenType.LessEqual:
modOp = Expr.DicePool.ModOperator.LessEqual;
Advance();
break;
case TokenType.Greater:
modOp = Expr.DicePool.ModOperator.Greater;
Advance();
break;
case TokenType.GreaterEqual:
modOp = Expr.DicePool.ModOperator.GreaterEqual;
Advance();
break;
case TokenType.Number:
modOp = Expr.DicePool.ModOperator.Equal;
modValue = Primary();
break;
default:
modOp = Expr.DicePool.ModOperator.Equal;
modValue = new Expr.Literal(1.0d);
break;
//throw new ParserException($"Expected dice mod operator, got '{tModOp}'.");
}
if (modValue == null)
{
modValue = Call();
}
if (mod == Expr.DicePool.DicePoolMod.KeepHighest || mod == Expr.DicePool.DicePoolMod.KeepLowest ||
mod == Expr.DicePool.DicePoolMod.DropHighest || mod == Expr.DicePool.DicePoolMod.DropLowest)
{
if (modOp != Expr.DicePool.ModOperator.Equal)
{
throw new ParserException($"{mod} only makes sense with operator equal.");
}
}
}