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66 lines
1.0 KiB
66 lines
1.0 KiB
9 years ago
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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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