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65 lines
1.0 KiB
65 lines
1.0 KiB
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/*! |
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* Stylus - stack - Frame |
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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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* Module dependencies. |
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*/ |
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var Scope = require('./scope'); |
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/** |
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* Initialize a new `Frame` with the given `block`. |
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* |
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* @param {Block} block |
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* @api private |
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*/ |
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var Frame = module.exports = function Frame(block) { |
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this._scope = false === block.scope |
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? null |
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: new Scope; |
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this.block = block; |
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}; |
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/** |
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* Return this frame's scope or the parent scope |
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* for scope-less blocks. |
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* |
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* @return {Scope} |
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* @api public |
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*/ |
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Frame.prototype.__defineGetter__('scope', function(){ |
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return this._scope || this.parent.scope; |
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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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Frame.prototype.lookup = function(name){ |
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return this.scope.lookup(name) |
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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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Frame.prototype.inspect = function(){ |
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return '[Frame ' |
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+ (false === this.block.scope |
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? 'scope-less' |
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: this.scope.inspect()) |
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+ ']'; |
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};
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