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- /*!
- * Stylus - Function
- * Copyright (c) Automattic <developer.wordpress.com>
- * MIT Licensed
- */
- /**
- * Module dependencies.
- */
- var Node = require('./node');
- /**
- * Initialize a new `Function` with `name`, `params`, and `body`.
- *
- * @param {String} name
- * @param {Params|Function} params
- * @param {Block} body
- * @api public
- */
- var Function = module.exports = function Function(name, params, body){
- Node.call(this);
- this.name = name;
- this.params = params;
- this.block = body;
- if ('function' == typeof params) this.fn = params;
- };
- /**
- * Check function arity.
- *
- * @return {Boolean}
- * @api public
- */
- Function.prototype.__defineGetter__('arity', function(){
- return this.params.length;
- });
- /**
- * Inherit from `Node.prototype`.
- */
- Function.prototype.__proto__ = Node.prototype;
- /**
- * Return hash.
- *
- * @return {String}
- * @api public
- */
- Function.prototype.__defineGetter__('hash', function(){
- return 'function ' + this.name;
- });
- /**
- * Return a clone of this node.
- *
- * @return {Node}
- * @api public
- */
- Function.prototype.clone = function(parent){
- if (this.fn) {
- var clone = new Function(
- this.name
- , this.fn);
- } else {
- var clone = new Function(this.name);
- clone.params = this.params.clone(parent, clone);
- clone.block = this.block.clone(parent, clone);
- }
- clone.lineno = this.lineno;
- clone.column = this.column;
- clone.filename = this.filename;
- return clone;
- };
- /**
- * Return <name>(param1, param2, ...).
- *
- * @return {String}
- * @api public
- */
- Function.prototype.toString = function(){
- if (this.fn) {
- return this.name
- + '('
- + this.fn.toString()
- .match(/^function *\w*\((.*?)\)/)
- .slice(1)
- .join(', ')
- + ')';
- } else {
- return this.name
- + '('
- + this.params.nodes.join(', ')
- + ')';
- }
- };
- /**
- * Return a JSON representation of this node.
- *
- * @return {Object}
- * @api public
- */
- Function.prototype.toJSON = function(){
- var json = {
- __type: 'Function',
- name: this.name,
- lineno: this.lineno,
- column: this.column,
- filename: this.filename
- };
- if (this.fn) {
- json.fn = this.fn;
- } else {
- json.params = this.params;
- json.block = this.block;
- }
- return json;
- };
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