| 1 |
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| 2 | /*!
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| 3 | * Stylus - stack - Frame
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| 4 | * Copyright (c) Automattic <developer.wordpress.com>
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| 5 | * MIT Licensed
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| 6 | */
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| 7 |
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| 8 | /**
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| 9 | * Module dependencies.
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| 10 | */
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| 11 |
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| 12 | var Scope = require('./scope');
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| 13 |
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| 14 | /**
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| 15 | * Initialize a new `Frame` with the given `block`.
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| 16 | *
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| 17 | * @param {Block} block
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| 18 | * @api private
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| 19 | */
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| 20 |
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| 21 | var Frame = module.exports = function Frame(block) {
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| 22 | this._scope = false === block.scope
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| 23 | ? null
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| 24 | : new Scope;
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| 25 | this.block = block;
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| 26 | };
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| 27 |
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| 28 | /**
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| 29 | * Return this frame's scope or the parent scope
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| 30 | * for scope-less blocks.
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| 31 | *
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| 32 | * @return {Scope}
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| 33 | * @api public
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| 34 | */
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| 35 |
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| 36 | Frame.prototype.__defineGetter__('scope', function(){
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| 37 | return this._scope || this.parent.scope;
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| 38 | });
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| 39 |
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| 40 | /**
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| 41 | * Lookup the given local variable `name`.
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| 42 | *
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| 43 | * @param {String} name
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| 44 | * @return {Node}
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| 45 | * @api private
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| 46 | */
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| 47 |
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| 48 | Frame.prototype.lookup = function(name){
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| 49 | return this.scope.lookup(name)
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| 50 | };
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| 51 |
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| 52 | /**
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| 53 | * Custom inspect.
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| 54 | *
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| 55 | * @return {String}
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| 56 | * @api public
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| 57 | */
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| 58 |
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| 59 | Frame.prototype.inspect = function(){
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| 60 | return '[Frame '
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| 61 | + (false === this.block.scope
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| 62 | ? 'scope-less'
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| 63 | : this.scope.inspect())
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| 64 | + ']';
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| 65 | };
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