/// <summary>
/// Evaluates the <paramref name="inputText"/> given a <paramref name="contextFactory"/>.
/// </summary>
/// <typeparam name="TSource"></typeparam>
/// <typeparam name="TStream"></typeparam>
/// <typeparam name="TParser"></typeparam>
/// <typeparam name="TContext"></typeparam>
/// <param name="inputText"></param>
/// <param name="contextFactory"></param>
/// <param name="errorListeners"></param>
/// <returns></returns>
public static TContext Evaluate <TSource, TStream, TParser, TContext>(this string inputText
, AntlrEvaluateParserContextDelegate <TParser, TContext> contextFactory
, params IParserErrorListener[] errorListeners)
where TSource : class, ITokenSource
where TStream : class, ITokenStream
where TParser : Parser
where TContext : class, IParseTree
{
contextFactory = contextFactory.VerifyNotNull();
var inputStream = Construct <AntlrInputStream>((inputText ?? Empty).ToArgument()).VerifyNotNull();
var inputSource = Construct <TSource>(inputStream.ToArgument <ICharStream>()).VerifyNotNull();
var tokenStream = Construct <TStream>(inputSource.ToArgument()).VerifyNotNull();
var parser = Construct <TParser>(tokenStream.ToArgument()).VerifyNotNull();
// TODO: TBD: do we need to add tree listeners?
foreach (var errorListener in errorListeners)
{
parser.AddErrorListener(errorListener);
}
return(contextFactory(parser).VerifyNotNull());
}
/// <summary>
/// Returns the <typeparamref name="TListener"/> after Walking the
/// <typeparamref name="TContext"/> during Parsing.
/// </summary>
/// <typeparam name="TSource"></typeparam>
/// <typeparam name="TStream"></typeparam>
/// <typeparam name="TParser"></typeparam>
/// <typeparam name="TContext"></typeparam>
/// <typeparam name="TListener"></typeparam>
/// <param name="inputText"></param>
/// <param name="evaluateCallback"></param>
/// <param name="errorListeners"></param>
/// <returns></returns>
public static TListener WalkEvaluatedContext <TSource, TStream, TParser, TContext, TListener>(this string inputText
, AntlrEvaluateParserContextDelegate <TParser, TContext> evaluateCallback, params IParserErrorListener[] errorListeners)
where TSource : class, ITokenSource
where TStream : class, ITokenStream
where TParser : Parser
where TContext : class, IParseTree
where TListener : class, IParseTreeListener
{
evaluateCallback = evaluateCallback.VerifyNotNull();
var context = inputText.Evaluate <TSource, TStream, TParser, TContext>(evaluateCallback, errorListeners);
var listener = Construct <TListener>().VerifyNotNull();
Construct <ParseTreeWalker>().VerifyNotNull().Walk(listener, context);
return(listener);
}
