public override GrammarParseResult VisitModifierRoll(ModifierRollContext context)
{
if (context == null)
{
return(GrammarParseResult.Unsuccessful(context.GetText()));
}
Debug.WriteLine($"VisitModifierRoll \"{context.GetText()}\"");
int numAdvantage = context.ADVANTAGE().Length - context.DISADVANTAGE().Length;
GrammarParseResult childDiceSides = VisitExpression(context.expression());
childDiceSides.Label = "Dice Sides";
int diceSides = childDiceSides.Value;
GrammarParseResult result = new GrammarParseResult(context.GetText());
string advStr;
if (numAdvantage == 0)
{
advStr = String.Empty;
}
else if (numAdvantage > 0)
{
advStr = "Highest of ";
}
else
{
advStr = "Lowest of ";
}
result.EvaluatedText = $"{advStr}{Math.Abs(numAdvantage)+1}d{diceSides}";
result.Children.Add(childDiceSides);
DiceResult diceResult = DiceUtil.RollAdvantage(numAdvantage, diceSides);
result.Value = diceResult.Total;
result.Output = String.Join(", ", diceResult.Values);
return(result);
}
private ExpressionContext expression(int _p)
{
ParserRuleContext _parentctx = Context;
int _parentState = State;
ExpressionContext _localctx = new ExpressionContext(Context, _parentState);
ExpressionContext _prevctx = _localctx;
int _startState = 6;
EnterRecursionRule(_localctx, 6, RULE_expression, _p);
int _la;
try {
int _alt;
EnterOuterAlt(_localctx, 1);
{
State = 55;
ErrorHandler.Sync(this);
switch (TokenStream.LA(1))
{
case SUBTRACT:
{
_localctx = new UnaryMinusExprContext(_localctx);
Context = _localctx;
_prevctx = _localctx;
State = 40; Match(SUBTRACT);
State = 41; expression(8);
}
break;
case DICE:
case ADVANTAGE:
case DISADVANTAGE:
{
_localctx = new ModifierRollContext(_localctx);
Context = _localctx;
_prevctx = _localctx;
State = 45;
ErrorHandler.Sync(this);
_la = TokenStream.LA(1);
while (_la == ADVANTAGE || _la == DISADVANTAGE)
{
{
{
State = 42;
_la = TokenStream.LA(1);
if (!(_la == ADVANTAGE || _la == DISADVANTAGE))
{
ErrorHandler.RecoverInline(this);
}
else
{
ErrorHandler.ReportMatch(this);
Consume();
}
}
}
State = 47;
ErrorHandler.Sync(this);
_la = TokenStream.LA(1);
}
State = 48; Match(DICE);
State = 49; ((ModifierRollContext)_localctx).sides = expression(7);
}
break;
case L_PAREN:
{
_localctx = new ParenExprContext(_localctx);
Context = _localctx;
_prevctx = _localctx;
State = 50; Match(L_PAREN);
State = 51; expression(0);
State = 52; Match(R_PAREN);
}
break;
case INTEGER:
{
_localctx = new NumberExprContext(_localctx);
Context = _localctx;
_prevctx = _localctx;
State = 54; Match(INTEGER);
}
break;
default:
throw new NoViableAltException(this);
}
Context.Stop = TokenStream.LT(-1);
State = 71;
ErrorHandler.Sync(this);
_alt = Interpreter.AdaptivePredict(TokenStream, 8, Context);
while (_alt != 2 && _alt != global::Antlr4.Runtime.Atn.ATN.INVALID_ALT_NUMBER)
{
if (_alt == 1)
{
if (ParseListeners != null)
{
TriggerExitRuleEvent();
}
_prevctx = _localctx;
{
State = 69;
ErrorHandler.Sync(this);
switch (Interpreter.AdaptivePredict(TokenStream, 7, Context))
{
case 1:
{
_localctx = new SumRollContext(new ExpressionContext(_parentctx, _parentState));
((SumRollContext)_localctx).num = _prevctx;
PushNewRecursionContext(_localctx, _startState, RULE_expression);
State = 57;
if (!(Precpred(Context, 6)))
{
throw new FailedPredicateException(this, "Precpred(Context, 6)");
}
State = 58; Match(DICE);
State = 59; ((SumRollContext)_localctx).sides = expression(7);
}
break;
case 2:
{
_localctx = new PowExprContext(new ExpressionContext(_parentctx, _parentState));
((PowExprContext)_localctx).lhs = _prevctx;
PushNewRecursionContext(_localctx, _startState, RULE_expression);
State = 60;
if (!(Precpred(Context, 5)))
{
throw new FailedPredicateException(this, "Precpred(Context, 5)");
}
State = 61; ((PowExprContext)_localctx).op = Match(POW);
State = 62; ((PowExprContext)_localctx).rhs = expression(5);
}
break;
case 3:
{
_localctx = new MultiplicationExprContext(new ExpressionContext(_parentctx, _parentState));
((MultiplicationExprContext)_localctx).lhs = _prevctx;
PushNewRecursionContext(_localctx, _startState, RULE_expression);
State = 63;
if (!(Precpred(Context, 4)))
{
throw new FailedPredicateException(this, "Precpred(Context, 4)");
}
State = 64;
((MultiplicationExprContext)_localctx).op = TokenStream.LT(1);
_la = TokenStream.LA(1);
if (!((((_la) & ~0x3f) == 0 && ((1L << _la) & ((1L << MULTIPLY) | (1L << DIVIDE) | (1L << MOD))) != 0)))
{
((MultiplicationExprContext)_localctx).op = ErrorHandler.RecoverInline(this);
}
else
{
ErrorHandler.ReportMatch(this);
Consume();
}
State = 65; ((MultiplicationExprContext)_localctx).rhs = expression(5);
}
break;
case 4:
{
_localctx = new AdditiveExprContext(new ExpressionContext(_parentctx, _parentState));
((AdditiveExprContext)_localctx).lhs = _prevctx;
PushNewRecursionContext(_localctx, _startState, RULE_expression);
State = 66;
if (!(Precpred(Context, 3)))
{
throw new FailedPredicateException(this, "Precpred(Context, 3)");
}
State = 67;
((AdditiveExprContext)_localctx).op = TokenStream.LT(1);
_la = TokenStream.LA(1);
if (!(_la == ADD || _la == SUBTRACT))
{
((AdditiveExprContext)_localctx).op = ErrorHandler.RecoverInline(this);
}
else
{
ErrorHandler.ReportMatch(this);
Consume();
}
State = 68; ((AdditiveExprContext)_localctx).rhs = expression(4);
}
break;
}
}
}
State = 73;
ErrorHandler.Sync(this);
_alt = Interpreter.AdaptivePredict(TokenStream, 8, Context);
}
}
}
catch (RecognitionException re) {
_localctx.exception = re;
ErrorHandler.ReportError(this, re);
ErrorHandler.Recover(this, re);
}
finally {
UnrollRecursionContexts(_parentctx);
}
return(_localctx);
}