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

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2023-10-03 11:14:36 +08:00
/*!
* Stylus - Group
* Copyright (c) Automattic <developer.wordpress.com>
* MIT Licensed
*/
/**
* Module dependencies.
*/
var Node = require('./node');
/**
* Initialize a new `Group`.
*
* @api public
*/
var Group = module.exports = function Group(){
Node.call(this);
this.nodes = [];
this.extends = [];
};
/**
* Inherit from `Node.prototype`.
*/
Group.prototype.__proto__ = Node.prototype;
/**
* Push the given `selector` node.
*
* @param {Selector} selector
* @api public
*/
Group.prototype.push = function(selector){
this.nodes.push(selector);
};
/**
* Return this set's `Block`.
*/
Group.prototype.__defineGetter__('block', function(){
return this.nodes[0].block;
});
/**
* Assign `block` to each selector in this set.
*
* @param {Block} block
* @api public
*/
Group.prototype.__defineSetter__('block', function(block){
for (var i = 0, len = this.nodes.length; i < len; ++i) {
this.nodes[i].block = block;
}
});
/**
* Check if this set has only placeholders.
*
* @return {Boolean}
* @api public
*/
Group.prototype.__defineGetter__('hasOnlyPlaceholders', function(){
return this.nodes.every(function(selector) { return selector.isPlaceholder; });
});
/**
* Return a clone of this node.
*
* @return {Node}
* @api public
*/
Group.prototype.clone = function(parent){
var clone = new Group;
clone.lineno = this.lineno;
clone.column = this.column;
this.nodes.forEach(function(node){
clone.push(node.clone(parent, clone));
});
clone.filename = this.filename;
clone.block = this.block.clone(parent, clone);
return clone;
};
/**
* Return a JSON representation of this node.
*
* @return {Object}
* @api public
*/
Group.prototype.toJSON = function(){
return {
__type: 'Group',
nodes: this.nodes,
block: this.block,
lineno: this.lineno,
column: this.column,
filename: this.filename
};
};