Tokenizer.prototype._shift = function()

in app/html/libs/bootstrap/grunt/bs-lessdoc-parser.js [91:131]

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

Tokenizer.prototype._shift = function () {
  // returning null signals EOF
  // returning undefined means the line was ignored
  if (this._next !== undefined) {
    var result = this._next;
    this._next = undefined;
    return result;
  }
  if (this._lines.length <= 0) {
    return null;
  }
  var line = this._lines.shift();
  var match = null;
  match = SUBSECTION_HEADING.exec(line);
  if (match !== null) {
    return new SubSection(match[1]);
  }
  match = CUSTOMIZABLE_HEADING.exec(line);
  if (match !== null) {
    return new Section(match[1], true);
  }
  match = UNCUSTOMIZABLE_HEADING.exec(line);
  if (match !== null) {
    return new Section(match[1], false);
  }
  match = SECTION_DOCSTRING.exec(line);
  if (match !== null) {
    return new SectionDocstring(match[1]);
  }
  match = VAR_DOCSTRING.exec(line);
  if (match !== null) {
    return new VarDocstring(match[1]);
  }
  var commentStart = line.lastIndexOf('//');
  var varLine = commentStart === -1 ? line : line.slice(0, commentStart);
  match = VAR_ASSIGNMENT.exec(varLine);
  if (match !== null) {
    return new Variable(match[1], match[2]);
  }
  return undefined;
};