Function highlight

docs/assets/highlight.js:160–359

(language_name, value)

  /* Core highlighting function */

  function highlight(language_name, value) {

    function subMode(lexem, mode) {
      for (var i = 0; i < mode.contains.length; i++) {
        if (mode.contains[i].beginRe.test(lexem)) {
          return mode.contains[i];
        }
      }
    }

    function endOfMode(mode_index, lexem) {
      if (modes[mode_index].end && modes[mode_index].endRe.test(lexem))
        return 1;
      if (modes[mode_index].endsWithParent) {
        var level = endOfMode(mode_index - 1, lexem);
        return level ? level + 1 : 0;
      }
      return 0;
    }

    function isIllegal(lexem, mode) {
      return mode.illegalRe && mode.illegalRe.test(lexem);
    }

    function compileTerminators(mode, language) {
      var terminators = [];

      for (var i = 0; i < mode.contains.length; i++) {
        terminators.push(mode.contains[i].begin);
      }

      var index = modes.length - 1;
      do {
        if (modes[index].end) {
          terminators.push(modes[index].end);
        }
        index--;
      } while (modes[index + 1].endsWithParent);

      if (mode.illegal) {
        terminators.push(mode.illegal);
      }

      return langRe(language, '(' + terminators.join('|') + ')', true);
    }

    function eatModeChunk(value, index) {
      var mode = modes[modes.length - 1];
      if (!mode.terminators) {
        mode.terminators = compileTerminators(mode, language);
      }
      mode.terminators.lastIndex = index;
      var match = mode.terminators.exec(value);
      if (match)
        return [value.substr(index, match.index - index), match[0], false];
      else
        return [value.substr(index), '', true];
    }