mirror of https://github.com/jkjoy/sunpeiwen.git
66 lines
1.0 KiB
JavaScript
66 lines
1.0 KiB
JavaScript
|
|
||
|
|
/*!
|
||
|
|
* Stylus - stack - Frame
|
||
|
|
* Copyright (c) Automattic <developer.wordpress.com>
|
||
|
|
* MIT Licensed
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Module dependencies.
|
||
|
|
*/
|
||
|
|
|
||
|
|
var Scope = require('./scope');
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Initialize a new `Frame` with the given `block`.
|
||
|
|
*
|
||
|
|
* @param {Block} block
|
||
|
|
* @api private
|
||
|
|
*/
|
||
|
|
|
||
|
|
var Frame = module.exports = function Frame(block) {
|
||
|
|
this._scope = false === block.scope
|
||
|
|
? null
|
||
|
|
: new Scope;
|
||
|
|
this.block = block;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Return this frame's scope or the parent scope
|
||
|
|
* for scope-less blocks.
|
||
|
|
*
|
||
|
|
* @return {Scope}
|
||
|
|
* @api public
|
||
|
|
*/
|
||
|
|
|
||
|
|
Frame.prototype.__defineGetter__('scope', function(){
|
||
|
|
return this._scope || this.parent.scope;
|
||
|
|
});
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Lookup the given local variable `name`.
|
||
|
|
*
|
||
|
|
* @param {String} name
|
||
|
|
* @return {Node}
|
||
|
|
* @api private
|
||
|
|
*/
|
||
|
|
|
||
|
|
Frame.prototype.lookup = function(name){
|
||
|
|
return this.scope.lookup(name)
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Custom inspect.
|
||
|
|
*
|
||
|
|
* @return {String}
|
||
|
|
* @api public
|
||
|
|
*/
|
||
|
|
|
||
|
|
Frame.prototype.inspect = function(){
|
||
|
|
return '[Frame '
|
||
|
|
+ (false === this.block.scope
|
||
|
|
? 'scope-less'
|
||
|
|
: this.scope.inspect())
|
||
|
|
+ ']';
|
||
|
|
};
|