private Matcher term()

in spectator-api/src/main/java/com/netflix/spectator/impl/matcher/Parser.java [69:109]

• 41 lines of code
• 15 McCabe index (conditional complexity)

  private Matcher term() {
    List<Matcher> matchers = new ArrayList<>();
    while (!isAtEnd() && peek() != ')' && peek() != '|') {
      char c = advance();
      switch (c) {
        case '\\':
          matchers.add(escape());
          break;
        case '^':
          matchers.add(StartMatcher.INSTANCE);
          break;
        case '$':
          matchers.add(EndMatcher.INSTANCE);
          break;
        case '[':
          matchers.add(new CharClassMatcher(charClass()));
          break;
        case '(':
          matchers.add(group());
          break;
        case '{':
          matchers.add(repeat(pop(matchers)));
          break;
        case '.':
          matchers.add(AnyMatcher.INSTANCE);
          break;
        case '?':
        case '*':
        case '+':
          if (matchers.isEmpty()) {
            throw error("dangling modifier");
          }
          matchers.add(meta(pop(matchers)));
          break;
        default:
          matchers.add(new CharSeqMatcher(c));
          break;
      }
    }
    return SeqMatcher.create(matchers);
  }