mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-11-25 06:46:26 +00:00
8368e17d6a
* All parser pipelines including tokenizer and DOM stuff are now constructed
from a 'recipe' data structure in a ParserPipelineFactory.
* All sub-pipelines of these can now be cached
* Event registrations to a pipeline are directly forwarded to the last
pipeline member to save relatively expensive event forwarding.
* Some APIs for on-demand expansion / format conversion of parameters from
parser functions are added:
param.to('tokens/expanded', cb)
param.to('text/wiki', cb) (this does not work yet)
All parameters are additionally wrapped into a Param object that provides
method for positional parameter naming (.named() or conversion to a dict
(.dict()).
* The async token transform manager is now separated from a frame object, with
the frame holding arguments, an on-demand expansion method and loop checks.
* Only keys of template parameters are now expanded. Parser functions or
template arguments trigger an expansion on-demand. This (unsurprisingly)
makes a big performance difference with typical switch-heavy template
systems.
* Return values from async transforms are no longer used in favor of plain
callbacks. This saves the complication of having to maintain two code paths.
A trick in transformTokens still avoids the construction of unneeded
TokenAccumulators.
* The results of template expansions are no longer buffered.
* 301 parser tests are passing
Known issues:
* Cosmetic cleanup remains to do
* Some parser functions do not support async expansions yet, and need to be
modified.
Change-Id: I1a7690baffbe8141cadf67270904a1b2e1df879a
67 lines
1.8 KiB
JavaScript
67 lines
1.8 KiB
JavaScript
/**
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* Generic attribute expansion handler.
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*
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* @author Gabriel Wicke <gwicke@wikimedia.org>
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*/
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var $ = require('jquery'),
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request = require('request'),
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events = require('events'),
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qs = require('querystring'),
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ParserFunctions = require('./ext.core.ParserFunctions.js').ParserFunctions,
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AttributeTransformManager = require('./mediawiki.TokenTransformManager.js')
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.AttributeTransformManager,
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defines = require('./mediawiki.parser.defines.js');
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function AttributeExpander ( manager ) {
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this.manager = manager;
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// XXX: only register for tag tokens?
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manager.addTransform( this.onToken.bind(this),
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this.rank, 'any' );
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}
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// constants
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AttributeExpander.prototype.rank = 1.11;
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/**
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* Token handler
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*
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* Expands target and arguments (both keys and values) and either directly
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* calls or sets up the callback to _expandTemplate, which then fetches and
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* processes the template.
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*/
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AttributeExpander.prototype.onToken = function ( token, frame, cb ) {
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//console.warn( 'AttributeExpander.onToken', JSON.stringify( token ) );
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if ( (token.constructor === TagTk ||
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token.constructor === SelfclosingTagTk) &&
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token.attribs &&
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token.attribs.length ) {
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token = $.extend( {}, token );
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token.attribs = token.attribs.slice();
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var atm = new AttributeTransformManager(
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this.manager,
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this._returnAttributes.bind( this, token, cb )
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);
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cb( { async: true } );
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atm.process( token.attribs );
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} else {
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cb ( { token: token } );
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}
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};
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/**
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* Callback for attribute expansion in AttributeTransformManager
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*/
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AttributeExpander.prototype._returnAttributes = function ( token, cb,
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attributes )
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{
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this.manager.env.dp( 'AttributeExpander._returnAttributes: ',attributes );
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token.attribs = attributes;
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cb( { token: token } );
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};
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if (typeof module == "object") {
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module.exports.AttributeExpander = AttributeExpander;
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}
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