public Lexems process(String text, LocaleId language, Tokens tokens) {
Lexems lexems = new Lexems();
for (LexerRule item : rules) {
RegexRule rule = (RegexRule) item;
if (!checkRule(rule, language)) continue;
List<Integer> inTokenIDs = rule.getInTokenIDs();
Pattern pattern = patterns.get(rule);
if (pattern == null) continue;
for (Token token : tokens) {
// if (token.isDeleted()) continue;
if (inTokenIDs.contains(token.getTokenId())) {
Range r = token.getRange();
Matcher matcher = pattern.matcher(token.getValue());
int groupIndex = rule.getRegexGroup();
while (matcher.find()) {
int start = matcher.start(groupIndex);
int end = matcher.end(groupIndex);
if (start > -1 && end > -1) {
Lexem lexem =
new Lexem(
rule.getLexemId(), matcher.group(groupIndex), r.start + start, r.start + end);
lexem.setAnnotation(new InputTokenAnnotation(token));
lexem.setImmutable(true);
lexems.add(lexem);
if (!rule.getKeepInput())
token
.delete(); // Delete the original token, other rules are still able to extract
// parts of it
}
}
}
}
}
return lexems;
}
@Override
protected void lexer_init() {
patterns = new LinkedHashMap<LexerRule, Pattern>();
rules = getRules();
for (LexerRule item : rules) {
RegexRule rule = (RegexRule) item;
Pattern pattern = null;
if (rule.getPattern() != null)
pattern = Pattern.compile(rule.getPattern(), rule.getRegexOptions());
patterns.put(rule, pattern);
}
}