public static IEnumerable <IList <Token> > Parse(Parser parser)
{
var result = new List <IList <Token> >();
var sentence = new List <Token>();
var tokens = parser.GetTokens();
for (int i = 0; i < tokens.Count; i++)
{
var item = tokens[i];
var token = _classifier.Classify(item);
token.Index = i;
if (string.IsNullOrEmpty(token.Content) == false)
{
sentence.Add(token);
}
if (TokenNormalizer.EndsWithPunctuation(item))
{
result.Add(sentence);
sentence = new List <Token>();
}
}
if (sentence.IsEmpty() == false)
{
result.Add(sentence);
}
return(result);
}
internal Token Classify(string token)
{
var normalizedLemma = TokenNormalizer.NormalizeLemmaFull(token);
if (_keywords.Contains(normalizedLemma))
{
return(new Token
{
Content = token,
Kind = TokenKind.Keyword
});
}
if (_words.ContainsKey(normalizedLemma))
{
return(new Token
{
Content = token,
Kind = _words[normalizedLemma]
});
}
return(new Token
{
Content = TokenNormalizer.RemovePunctuation(token),
Kind = TokenKind.None
});
}
public QueryDefinition Parse(IList <Token> tokens)
{
var result = new QueryDefinition();
var lemma = tokens[0];
var startIndex = 1;
bool found = false;
// Note: Adjective comes first!
if (tokens.Count > 1 && tokens[0].Kind == TokenKind.None)
{
//startIndex++;
int index = 0;
var attributeDefinition = FindNextAttributeDefinition(tokens, ref index);
if (attributeDefinition != null)
{
result.Properties.Add(attributeDefinition);
lemma = tokens[index + 1];
startIndex = Math.Max(attributeDefinition.Key.Max(x => x.Index), attributeDefinition.Value.Max(x => x.Index)) + 2;
found = true;
}
if (found == false)
{
if (_properties.ContainsKey(tokens[0].Content.ToLowerInvariant()))
{
result.Properties.Add(new AttributeDefinition(MultipartToken.FromToken(new Token
{
Kind = TokenKind.None,
Content = _properties[tokens[0].Content.ToLowerInvariant()]
}),
MultipartToken.FromToken(new Token
{
Kind = TokenKind.None,
Content = tokens[0].Content.ToLowerInvariant()
})
));
}
else
{
// Todo: Determine if it's a bool property or if it's non-bool property!
result.Properties.Add(new AttributeDefinition(MultipartToken.FromToken(new Token
{
Kind = TokenKind.None,
Content = tokens[0].Content
})));
}
}
}
// Note: Regular Parsing -> Propery - Value Pair!
if (lemma.Kind == TokenKind.Keyword)
{
// Note: Now that we have a keyword find the next two tokens! If we can!
var index = startIndex;
var propertyValuePair = FindNextAttributeDefinition(tokens, ref index);
result.Target = TokenNormalizer.CaseNormalizeLemma(lemma.Content).ToLowerInvariant();
while (propertyValuePair != null)
{
result.Properties.Add(propertyValuePair);
// Todo: We should be counting, instead of always adding one!!
index += 1;
propertyValuePair = FindNextAttributeDefinition(tokens, ref index);
}
}
return(result);
}
