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- /*!
- * Stylus - Feature
- * Copyright (c) Automattic <developer.wordpress.com>
- * MIT Licensed
- */
- /**
- * Module dependencies.
- */
- var Node = require('./node');
- /**
- * Initialize a new `Feature` with the given `segs`.
- *
- * @param {Array} segs
- * @api public
- */
- var Feature = module.exports = function Feature(segs){
- Node.call(this);
- this.segments = segs;
- this.expr = null;
- };
- /**
- * Inherit from `Node.prototype`.
- */
- Feature.prototype.__proto__ = Node.prototype;
- /**
- * Return a clone of this node.
- *
- * @return {Node}
- * @api public
- */
- Feature.prototype.clone = function(parent){
- var clone = new Feature;
- clone.segments = this.segments.map(function(node){ return node.clone(parent, clone); });
- if (this.expr) clone.expr = this.expr.clone(parent, clone);
- if (this.name) clone.name = this.name;
- clone.lineno = this.lineno;
- clone.column = this.column;
- clone.filename = this.filename;
- return clone;
- };
- /**
- * Return "<ident>" or "(<ident>: <expr>)"
- *
- * @return {String}
- * @api public
- */
- Feature.prototype.toString = function(){
- if (this.expr) {
- return '(' + this.segments.join('') + ': ' + this.expr.toString() + ')';
- } else {
- return this.segments.join('');
- }
- };
- /**
- * Return a JSON representation of this node.
- *
- * @return {Object}
- * @api public
- */
- Feature.prototype.toJSON = function(){
- var json = {
- __type: 'Feature',
- segments: this.segments,
- lineno: this.lineno,
- column: this.column,
- filename: this.filename
- };
- if (this.expr) json.expr = this.expr;
- if (this.name) json.name = this.name;
- return json;
- };
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