Review

class StripCode.Strip {
    /**
     * Determines whether the given node helps to define a
     * strip type. For example, goog.inherits(stripType, Object)
     * would be such a call.
     *
     * Also reports an error if a non-strip type inherits from a strip type.
     *
     * @param t The current traversal
     * @param callNode The CALL node
     */
    private boolean actsOnStripType(NodeTraversal t, Node callNode) {
      SubclassRelationship classes =
          compiler.getCodingConvention().getClassesDefinedByCall(callNode);
      if (classes != null) {
        // It's okay to strip a type that inherits from a non-stripped type
        // e.g. goog.inherits(goog.debug.Logger, Object)
        if (qualifiedNameBeginsWithStripType(classes.subclassName)) {
          return true;
        }

        // report an error if a non-strip type inherits from a
        // strip type.
        if (qualifiedNameBeginsWithStripType(classes.superclassName)) {
          t.report(callNode, STRIP_TYPE_INHERIT_ERROR,
                   classes.subclassName, classes.superclassName);
        }
      }

      return false;
    }

}