internal override InternalResult <SourcePos> Parse(IParseState <TToken> state) => InternalResult.Success(state.SourcePos, false);
internal sealed override InternalResult <T> Parse(IParseState <TToken> state) => InternalResult.Success <T>(_value, false);
// see comment about expecteds in ParseState.Error.cs
internal override InternalResult <IEnumerable <T> > Parse(ref ParseState <TToken> state)
{
var ts = _keepResults ? new List <T>() : null;
var firstItemResult = _parser.Parse(ref state);
if (!firstItemResult.Success)
{
// state.Error set by _parser
return(InternalResult.Failure <IEnumerable <T> >(firstItemResult.ConsumedInput));
}
if (!firstItemResult.ConsumedInput)
{
throw new InvalidOperationException("Until() used with a parser which consumed no input");
}
ts?.Add(firstItemResult.Value);
while (true)
{
state.BeginExpectedTran();
var terminatorResult = _terminator.Parse(ref state);
if (terminatorResult.Success)
{
state.EndExpectedTran(false);
return(InternalResult.Success <IEnumerable <T> >(ts, true));
}
if (terminatorResult.ConsumedInput)
{
// state.Error set by _terminator
state.EndExpectedTran(true);
return(InternalResult.Failure <IEnumerable <T> >(true));
}
state.BeginExpectedTran();
var itemResult = _parser.Parse(ref state);
if (!itemResult.Success)
{
if (!itemResult.ConsumedInput)
{
// get the expected from both _terminator and _parser
state.EndExpectedTran(true);
state.EndExpectedTran(true);
}
else
{
// throw out the _terminator expecteds and keep only _parser
var itemExpected = state.ExpectedTranState();
state.EndExpectedTran(false);
state.EndExpectedTran(false);
state.AddExpected(itemExpected.AsSpan());
itemExpected.Dispose();
}
return(InternalResult.Failure <IEnumerable <T> >(true));
}
// throw out both sets of expecteds
state.EndExpectedTran(false);
state.EndExpectedTran(false);
if (!itemResult.ConsumedInput)
{
throw new InvalidOperationException("Until() used with a parser which consumed no input");
}
ts?.Add(itemResult.Value);
}
}
internal sealed override InternalResult <R> Parse(ref ParseState <TToken> state)
{
var consumedInput = false;
var result1 = _p1.Parse(ref state);
consumedInput = consumedInput || result1.ConsumedInput;
if (!result1.Success)
{
return(InternalResult.Failure <R>(consumedInput));
}
var result2 = _p2.Parse(ref state);
consumedInput = consumedInput || result2.ConsumedInput;
if (!result2.Success)
{
return(InternalResult.Failure <R>(consumedInput));
}
var result3 = _p3.Parse(ref state);
consumedInput = consumedInput || result3.ConsumedInput;
if (!result3.Success)
{
return(InternalResult.Failure <R>(consumedInput));
}
var result4 = _p4.Parse(ref state);
consumedInput = consumedInput || result4.ConsumedInput;
if (!result4.Success)
{
return(InternalResult.Failure <R>(consumedInput));
}
var result5 = _p5.Parse(ref state);
consumedInput = consumedInput || result5.ConsumedInput;
if (!result5.Success)
{
return(InternalResult.Failure <R>(consumedInput));
}
var result6 = _p6.Parse(ref state);
consumedInput = consumedInput || result6.ConsumedInput;
if (!result6.Success)
{
return(InternalResult.Failure <R>(consumedInput));
}
var result7 = _p7.Parse(ref state);
consumedInput = consumedInput || result7.ConsumedInput;
if (!result7.Success)
{
return(InternalResult.Failure <R>(consumedInput));
}
return(InternalResult.Success <R>(_func(
result1.Value,
result2.Value,
result3.Value,
result4.Value,
result5.Value,
result6.Value,
result7.Value
), consumedInput));
}
internal override InternalResult <SourcePos> Parse(ref ParseState <TToken> state) => InternalResult.Success(state.ComputeSourcePos(), false);
internal sealed override InternalResult <R> Parse(IParseState <TToken> state)
{
var consumedInput = false;
var result1 = _p1.Parse(state);
consumedInput = consumedInput || result1.ConsumedInput;
if (!result1.Success)
{
state.Error = state.Error.WithExpected(Expected);
return(InternalResult.Failure <R>(
consumedInput
));
}
var result2 = _p2.Parse(state);
consumedInput = consumedInput || result2.ConsumedInput;
if (!result2.Success)
{
state.Error = state.Error.WithExpected(Expected);
return(InternalResult.Failure <R>(
consumedInput
));
}
var result3 = _p3.Parse(state);
consumedInput = consumedInput || result3.ConsumedInput;
if (!result3.Success)
{
state.Error = state.Error.WithExpected(Expected);
return(InternalResult.Failure <R>(
consumedInput
));
}
var result4 = _p4.Parse(state);
consumedInput = consumedInput || result4.ConsumedInput;
if (!result4.Success)
{
state.Error = state.Error.WithExpected(Expected);
return(InternalResult.Failure <R>(
consumedInput
));
}
var result5 = _p5.Parse(state);
consumedInput = consumedInput || result5.ConsumedInput;
if (!result5.Success)
{
state.Error = state.Error.WithExpected(Expected);
return(InternalResult.Failure <R>(
consumedInput
));
}
return(InternalResult.Success <R>(_func(
result1.Value,
result2.Value,
result3.Value,
result4.Value,
result5.Value
), consumedInput));
}
