/// <summary>
/// Special visitor to extract composite entities.
/// This class is static.
/// </summary>
/// <param name="context">The intent context.</param>
/// <returns>The utterance to entities map.</returns>
public static UtteranceAndEntitiesMap VisitNormalIntentStringContext(LUFileParser.NormalIntentStringContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var utterance = string.Empty;
var entities = new List <EntityElement>();
var errorMessages = new List <string>();
// TODO: Check that this interface is actually implemented in the iterable
foreach (ITerminalNode innerNode in context.children)
{
switch (innerNode.Symbol.Type)
{
case LUFileParser.DASH:
break;
case LUFileParser.EXPRESSION:
var tokenizedUterance = TokenizeUtterance(innerNode.GetText().Trim());
var utteranceBuilder = new StringBuilder(utterance.TrimStart());
utterance = RecursivelyResolveTokenizedUtterance(tokenizedUterance, entities, errorMessages, utteranceBuilder).ToString();
break;
default:
utterance += innerNode.GetText();
break;
}
}
return(new UtteranceAndEntitiesMap
{
Utterance = utterance.Trim(),
Entities = entities,
ErrorMsgs = errorMessages
});
}
/// <summary>
/// Visit a parse tree produced by <see cref="LUFileParser.normalIntentString"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitNormalIntentString([NotNull] LUFileParser.NormalIntentStringContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by <see cref="LUFileParser.normalIntentString"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitNormalIntentString([NotNull] LUFileParser.NormalIntentStringContext context)
{
}
