mediawiki-extensions-Visual.../modules/parser/ext.core.PostExpandParagraphHandler.js

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/*
* Insert paragraphs for comment-only lines after template expansion
*
* @author Gabriel Wicke <gwicke@wikimedia.org>
*/
// Include general utilities
var Util = require('./ext.Util.js').Util,
u = new Util();
function PostExpandParagraphHandler ( dispatcher ) {
this.tokens = [];
this.newLines = 0;
this.register( dispatcher );
}
// constants
PostExpandParagraphHandler.prototype.newlineRank = 2.5;
PostExpandParagraphHandler.prototype.anyRank = 2.501; // Just after regular quote and newline
// Register this transformer with the TokenTransformer
PostExpandParagraphHandler.prototype.register = function ( dispatcher ) {
this.dispatcher = dispatcher;
// Register for NEWLINE tokens
dispatcher.addTransform( this.onNewLine.bind(this),
this.newlineRank, 'newline' );
// Reset internal state when we are done
dispatcher.addTransform( this.onEnd.bind(this),
this.newlineRank, 'end' );
};
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PostExpandParagraphHandler.prototype.reset = function ( token, frame, cb ) {
//console.warn( 'PostExpandParagraphHandler.reset ' + JSON.stringify( this.tokens ) );
if ( this.newLines ) {
this.tokens.push( token );
return this._finish();
} else {
return [token];
}
};
PostExpandParagraphHandler.prototype._finish = function ( ) {
var tokens = this.tokens;
this.tokens = [];
// remove 'any' registration
this.dispatcher.removeTransform( this.anyRank, 'any' );
this.newLines = 0;
return tokens;
};
// Handle NEWLINE tokens
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PostExpandParagraphHandler.prototype.onNewLine = function ( token, frame, cb ) {
//console.warn( 'PostExpandParagraphHandler.onNewLine: ' + JSON.stringify( token, null , 2 ) );
var res;
this.tokens.push( token );
if( ! this.newLines ) {
this.dispatcher.addTransform( this.onAny.bind(this),
this.anyRank, 'any' );
}
this.newLines++;
return {};
};
PostExpandParagraphHandler.prototype.onEnd = function ( token, frame, cb ) {
return { tokens: this.reset( token ) };
}
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PostExpandParagraphHandler.prototype.onAny = function ( token, frame, cb ) {
//console.warn( 'PostExpandParagraphHandler.onAny' );
if ( token.constructor === CommentTk ||
( token.constructor === String && token.match( /^[\t ]*$/ ) )
)
{
// Continue with collection..
this.tokens.push( token );
return {};
} else {
// XXX: Only open paragraph if inline token follows!
// None of the tokens we are interested in, so abort processing..
//console.warn( 'PostExpandParagraphHandler.onAny: ' + JSON.stringify( this.tokens, null , 2 ) );
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if ( this.newLines >= 2 && ! u.isBlockToken( token ) ) {
this.tokens.push( token );
var nlTks = [];
while ( this.tokens[0].constructor === NlTk ) {
nlTks.push( this.tokens.shift() );
}
var res = { tokens: nlTks.concat([ new TagTk( 'p' ) ], this._finish() ) };
//console.warn( 'insert p:' + JSON.stringify( res, null, 2 ) );
return res;
} else {
return { tokens: this.reset(token) };
}
}
};
if (typeof module == "object") {
module.exports.PostExpandParagraphHandler = PostExpandParagraphHandler;
}