/* Simple AST node visitor builder. */
var visitor = {
  /*
   * Builds a node visitor -- a function which takes a node and any number of
   * other parameters, calls an appropriate function according to the node type,
   * passes it all its parameters and returns its value. The functions for
   * various node types are passed in a parameter to |buildNodeVisitor| as a
   * hash.
   */
  buildNodeVisitor: function(functions) {
    return function(node) {
      return functions[node.type].apply(null, arguments);
    };
  }
};

module.exports = visitor;