internal UtterancePattern(string patternDefinition, PatternConfiguration configuration)
{
PatternDefinition = patternDefinition;
_patternWords = patternDefinition.Split(' ').ToArray();
_sentenceKeys = new string[_patternWords.Length];
_wordSets = new HashSet <string> [_patternWords.Length];
for (var wordIndex = 0; wordIndex < _patternWords.Length; ++wordIndex)
{
var word = _patternWords[wordIndex];
var targetSet = generateTargetSet(word, configuration);
if (targetSet != null)
{
_wordSets[wordIndex] = targetSet;
continue;
}
if (word.StartsWith(SentencePrefix))
{
_sentenceKeys[wordIndex] = word.Substring(SentencePrefix.Length);
continue;
}
throw new NotSupportedException("Given construction '" + word + "' is not supported yet");
}
}
private HashSet <string> generateTargetSet(string word, PatternConfiguration configuration)
{
if (word.StartsWith(GroupPrefix))
{
var groupSet = new HashSet <string>(StringComparer.InvariantCultureIgnoreCase);
var groupKey = word.Substring(GroupPrefix.Length);
groupSet.UnionWith(configuration.GetGroup(groupKey));
return(groupSet);
}
if (word.StartsWith(SentencePrefix))
{
return(null);
}
var singleWordSet = new HashSet <string>();
singleWordSet.Add(word);
return(singleWordSet);
}