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62 lines
1.1 KiB
62 lines
1.1 KiB
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/*! |
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* Stylus - stack - Scope |
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* Copyright (c) Automattic <developer.wordpress.com> |
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* MIT Licensed |
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*/ |
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/** |
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* Initialize a new `Scope`. |
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* |
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* @api private |
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*/ |
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var Scope = module.exports = function Scope() { |
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this.locals = {}; |
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}; |
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/** |
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* Add `ident` node to the current scope. |
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* |
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* @param {Ident} ident |
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* @api private |
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*/ |
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Scope.prototype.add = function(ident){ |
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this.locals[ident.name] = ident.val; |
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}; |
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/** |
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* Lookup the given local variable `name`. |
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* |
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* @param {String} name |
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* @return {Node} |
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* @api private |
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*/ |
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Scope.prototype.lookup = function(name){ |
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return hasOwnProperty(this.locals, name) ? this.locals[name] : undefined; |
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}; |
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/** |
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* Custom inspect. |
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* |
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* @return {String} |
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* @api public |
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*/ |
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Scope.prototype.inspect = function(){ |
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var keys = Object.keys(this.locals).map(function(key){ return '@' + key; }); |
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return '[Scope' |
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+ (keys.length ? ' ' + keys.join(', ') : '') |
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+ ']'; |
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}; |
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/** |
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* @param {Object} obj |
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* @param {String} propName |
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* @returns {Boolean} |
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*/ |
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function hasOwnProperty(obj, propName) { |
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return Object.prototype.hasOwnProperty.call(obj, propName); |
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}
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