text: /*!
   * Stylus - String
   * Copyright (c) Automattic <developer.wordpress.com>
   * MIT Licensed
   */
  
  /**
   * Module dependencies.
   */
  
  var Node = require('./node')
    , sprintf = require('../functions').s
    , utils = require('../utils')
    , nodes = require('./');
  
  /**
   * Initialize a new `String` with the given `val`.
   *
   * @param {String} val
   * @param {String} quote
   * @api public
   */
  
  var String = module.exports = function String(val, quote){
    Node.call(this);
    this.val = val;
    this.string = val;
    this.prefixed = false;
    if (typeof quote !== 'string') {
      this.quote = "'";
    } else {
      this.quote = quote;
    }
  };
  
  /**
   * Inherit from `Node.prototype`.
   */
  
  String.prototype.__proto__ = Node.prototype;
  
  /**
   * Return quoted string.
   *
   * @return {String}
   * @api public
   */
  
  String.prototype.toString = function(){
    return this.quote + this.val + this.quote;
  };
  
  /**
   * Return a clone of this node.
   *
   * @return {Node}
   * @api public
   */
  
  String.prototype.clone = function(){
    var clone = new String(this.val, this.quote);
    clone.lineno = this.lineno;
    clone.column = this.column;
    clone.filename = this.filename;
    return clone;
  };
  
  /**
   * Return a JSON representation of this node.
   *
   * @return {Object}
   * @api public
   */
  
  String.prototype.toJSON = function(){
    return {
      __type: 'String',
      val: this.val,
      quote: this.quote,
      lineno: this.lineno,
      column: this.column,
      filename: this.filename
    };
  };
  
  /**
   * Return Boolean based on the length of this string.
   *
   * @return {Boolean}
   * @api public
   */
  
  String.prototype.toBoolean = function(){
    return nodes.Boolean(this.val.length);
  };
  
  /**
   * Coerce `other` to a string.
   *
   * @param {Node} other
   * @return {String}
   * @api public
   */
  
  String.prototype.coerce = function(other){
    switch (other.nodeName) {
      case 'string':
        return other;
      case 'expression':
        return new String(other.nodes.map(function(node){
          return this.coerce(node).val;
        }, this).join(' '));
      default:
        return new String(other.toString());
    }
  };
  
  /**
   * Operate on `right` with the given `op`.
   *
   * @param {String} op
   * @param {Node} right
   * @return {Node}
   * @api public
   */
  
  String.prototype.operate = function(op, right){
    switch (op) {
      case '%':
        var expr = new nodes.Expression;
        expr.push(this);
  
        // constructargs
        var args = 'expression' == right.nodeName
          ? utils.unwrap(right).nodes
          : [right];
  
        // apply
        return sprintf.apply(null, [expr].concat(args));
      case '+':
        var expr = new nodes.Expression;
        expr.push(new String(this.val + this.coerce(right).val));
        return expr;
      default:
        return Node.prototype.operate.call(this, op, right);
    }
  };
  