/// <summary>
/// Parses the specified arguments.
/// </summary>
/// <param name="args">The arguments.</param>
/// <returns>The result of the parsing</returns>
/// <exception cref="NoFactoryFunctionException"></exception>
/// <exception cref="UnexpectedArgException"></exception>
public virtual IParseResult Parse(string[] args)
{
ChainIdentificationResult chainRes = null;
try
{
chainRes = ChainIdentificationStrategy.Identify(new ChainIdentificationRequest(args, Context));
var mutatedArgs = ArgsMutator.Mutate(new MutateArgsRequest(args, chainRes.Chain, Context));
var info = IterationInfoFactory.Create(new IterationInfoRequest(chainRes, mutatedArgs, args));
if (chainRes.IdentifiedParser.FactoryFunction == null)
{
throw new NoFactoryFunctionException(chainRes.IdentifiedParser);
}
var instance = chainRes.IdentifiedParser.FactoryFunction();
while (!info.IsComplete())
{
var potentialConsumerRequest = new PotentialConsumerRequest(chainRes, info, instance);
var potentialConsumerResult =
PotentialConsumerStrategy.IdentifyPotentialConsumer(potentialConsumerRequest);
if (!potentialConsumerResult.Success)
{
throw new UnexpectedArgException(info);
}
var selected = ConsumerSelectionStrategy.Select(potentialConsumerResult);
var consumptionRequest = ConsumptionRequestFactory.Create(potentialConsumerResult, selected);
var consumptionResult = selected.ConsumingParameter.Consume(instance, consumptionRequest);
if (consumptionResult.ParseExceptions.Any())
{
return(new ParseResult(new Dictionary <object, Parser>(), consumptionResult.ParseExceptions));
}
info = consumptionResult.Info;
}
return(ParseResultFactory.Create(new Dictionary <object, Parser>
{
[instance] = chainRes.IdentifiedParser
}, null));
}
catch (ParseException e)
{
return(new ParseResult(null, e.ToEnumerableOfOne()));
}
finally
{
chainRes?.Chain.ToList().ForEach(p => p.Reset());
}
}
/// <summary>
/// Sets the context.
/// </summary>
/// <param name="context">The context.</param>
private void SetContext(IContext context)
{
_context = context;
if (ArgsMutator == null)
{
ArgsMutator = new ArgsMutator(context);
}
if (ChainIdentificationStrategy == null)
{
ChainIdentificationStrategy = new ParserChainIdentificationStrategy(context);
}
if (ConsumerSelectionStrategy == null)
{
ConsumerSelectionStrategy = new ConsumerSelectionStrategy(context);
}
if (ConsumptionRequestFactory == null)
{
ConsumptionRequestFactory = new ConsumptionRequestFactory(context);
}
if (IterationInfoFactory == null)
{
IterationInfoFactory = new IterationInfoFactory(context);
}
if (ParseResultFactory == null)
{
ParseResultFactory = new ParseResultFactory(context);
}
if (PotentialConsumerStrategy == null)
{
PotentialConsumerStrategy = new PotentialConsumerStrategy(context);
}
ArgsMutator.Context = context;
ChainIdentificationStrategy.Context = context;
ConsumerSelectionStrategy.Context = context;
ConsumptionRequestFactory.Context = context;
IterationInfoFactory.Context = context;
ParseResultFactory.Context = context;
PotentialConsumerStrategy.Context = context;
}