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node_modules/stylus/lib/nodes/literal.js 1.82 KB
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  /*!
   * Stylus - Literal
   * Copyright (c) Automattic <developer.wordpress.com>
   * MIT Licensed
   */
  
  /**
   * Module dependencies.
   */
  
  var Node = require('./node')
    , nodes = require('./');
  
  /**
   * Initialize a new `Literal` with the given `str`.
   *
   * @param {String} str
   * @api public
   */
  
  var Literal = module.exports = function Literal(str){
    Node.call(this);
    this.val = str;
    this.string = str;
    this.prefixed = false;
  };
  
  /**
   * Inherit from `Node.prototype`.
   */
  
  Literal.prototype.__proto__ = Node.prototype;
  
  /**
   * Return hash.
   *
   * @return {String}
   * @api public
   */
  
  Literal.prototype.__defineGetter__('hash', function(){
    return this.val;
  });
  
  /**
   * Return literal value.
   *
   * @return {String}
   * @api public
   */
  
  Literal.prototype.toString = function(){
    return this.val;
  };
  
  /**
   * Coerce `other` to a literal.
   *
   * @param {Node} other
   * @return {String}
   * @api public
   */
  
  Literal.prototype.coerce = function(other){
    switch (other.nodeName) {
      case 'ident':
      case 'string':
      case 'literal':
        return new Literal(other.string);
      default:
        return Node.prototype.coerce.call(this, other);
    }
  };
  
  /**
   * Operate on `right` with the given `op`.
   *
   * @param {String} op
   * @param {Node} right
   * @return {Node}
   * @api public
   */
  
  Literal.prototype.operate = function(op, right){
    var val = right.first;
    switch (op) {
      case '+':
        return new nodes.Literal(this.string + this.coerce(val).string);
      default:
        return Node.prototype.operate.call(this, op, right);
    }
  };
  
  /**
   * Return a JSON representation of this node.
   *
   * @return {Object}
   * @api public
   */
  
  Literal.prototype.toJSON = function(){
    return {
      __type: 'Literal',
      val: this.val,
      string: this.string,
      prefixed: this.prefixed,
      lineno: this.lineno,
      column: this.column,
      filename: this.filename
    };
  };