hexo/node_modules/stylus/lib/nodes/boolean.js

118 lines
1.8 KiB
JavaScript

/*!
* Stylus - Boolean
* Copyright (c) Automattic <developer.wordpress.com>
* MIT Licensed
*/
/**
* Module dependencies.
*/
var Node = require('./node')
, nodes = require('./');
/**
* Initialize a new `Boolean` node with the given `val`.
*
* @param {Boolean} val
* @api public
*/
var Boolean = module.exports = function Boolean(val){
Node.call(this);
if (this.nodeName) {
this.val = !!val;
} else {
return new Boolean(val);
}
};
/**
* Inherit from `Node.prototype`.
*/
Boolean.prototype.__proto__ = Node.prototype;
/**
* Return `this` node.
*
* @return {Boolean}
* @api public
*/
Boolean.prototype.toBoolean = function(){
return this;
};
/**
* Return `true` if this node represents `true`.
*
* @return {Boolean}
* @api public
*/
Boolean.prototype.__defineGetter__('isTrue', function(){
return this.val;
});
/**
* Return `true` if this node represents `false`.
*
* @return {Boolean}
* @api public
*/
Boolean.prototype.__defineGetter__('isFalse', function(){
return ! this.val;
});
/**
* Negate the value.
*
* @return {Boolean}
* @api public
*/
Boolean.prototype.negate = function(){
return new Boolean(!this.val);
};
/**
* Return 'Boolean'.
*
* @return {String}
* @api public
*/
Boolean.prototype.inspect = function(){
return '[Boolean ' + this.val + ']';
};
/**
* Return 'true' or 'false'.
*
* @return {String}
* @api public
*/
Boolean.prototype.toString = function(){
return this.val
? 'true'
: 'false';
};
/**
* Return a JSON representaiton of this node.
*
* @return {Object}
* @api public
*/
Boolean.prototype.toJSON = function(){
return {
__type: 'Boolean',
val: this.val
};
};