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- /*!
- * Stylus - Ident
- * Copyright (c) Automattic <developer.wordpress.com>
- * MIT Licensed
- */
- /**
- * Module dependencies.
- */
- var Node = require('./node')
- , nodes = require('./');
- /**
- * Initialize a new `Ident` by `name` with the given `val` node.
- *
- * @param {String} name
- * @param {Node} val
- * @api public
- */
- var Ident = module.exports = function Ident(name, val, mixin){
- Node.call(this);
- this.name = name;
- this.string = name;
- this.val = val || nodes.null;
- this.mixin = !!mixin;
- };
- /**
- * Check if the variable has a value.
- *
- * @return {Boolean}
- * @api public
- */
- Ident.prototype.__defineGetter__('isEmpty', function(){
- return undefined == this.val;
- });
- /**
- * Return hash.
- *
- * @return {String}
- * @api public
- */
- Ident.prototype.__defineGetter__('hash', function(){
- return this.name;
- });
- /**
- * Inherit from `Node.prototype`.
- */
- Ident.prototype.__proto__ = Node.prototype;
- /**
- * Return a clone of this node.
- *
- * @return {Node}
- * @api public
- */
- Ident.prototype.clone = function(parent){
- var clone = new Ident(this.name);
- clone.val = this.val.clone(parent, clone);
- clone.mixin = this.mixin;
- clone.lineno = this.lineno;
- clone.column = this.column;
- clone.filename = this.filename;
- clone.property = this.property;
- clone.rest = this.rest;
- return clone;
- };
- /**
- * Return a JSON representation of this node.
- *
- * @return {Object}
- * @api public
- */
- Ident.prototype.toJSON = function(){
- return {
- __type: 'Ident',
- name: this.name,
- val: this.val,
- mixin: this.mixin,
- property: this.property,
- rest: this.rest,
- lineno: this.lineno,
- column: this.column,
- filename: this.filename
- };
- };
- /**
- * Return <name>.
- *
- * @return {String}
- * @api public
- */
- Ident.prototype.toString = function(){
- return this.name;
- };
- /**
- * Coerce `other` to an ident.
- *
- * @param {Node} other
- * @return {String}
- * @api public
- */
- Ident.prototype.coerce = function(other){
- switch (other.nodeName) {
- case 'ident':
- case 'string':
- case 'literal':
- return new Ident(other.string);
- case 'unit':
- return new Ident(other.toString());
- 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
- */
- Ident.prototype.operate = function(op, right){
- var val = right.first;
- switch (op) {
- case '-':
- if ('unit' == val.nodeName) {
- var expr = new nodes.Expression;
- val = val.clone();
- val.val = -val.val;
- expr.push(this);
- expr.push(val);
- return expr;
- }
- case '+':
- return new nodes.Ident(this.string + this.coerce(val).string);
- }
- return Node.prototype.operate.call(this, op, right);
- };
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