Added typed blocks

core/modules/parsers/wikiparser/rules/typedblock.js

@@ -0,0 +1,79 @@
+/*\
+title: $:/core/modules/parsers/wikiparser/rules/typedblock.js
+type: application/javascript
+module-type: wikirule
+
+Wiki text rule for typed blocks. For example:
+
+```
+$$$.js
+This will be rendered as JavaScript
+$$$
+
+$$$.svg
+<svg xmlns="http://www.w3.org/2000/svg" width="150" height="100">
+  <circle cx="100" cy="50" r="40" stroke="black" stroke-width="2" fill="red" />
+</svg>
+$$$
+
+$$$text/vnd.tiddlywiki>text/html
+This will be rendered as an //HTML representation// of WikiText
+$$$
+```
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+exports.name = "typedblock";
+exports.types = {block: true};
+
+exports.init = function(parser) {
+	this.parser = parser;
+	// Regexp to match
+	this.matchRegExp = /\$\$\$([^ >\r\n]*)(?: *> *([^ \r\n]+))?\r?\n/mg;
+};
+
+exports.parse = function() {
+	var reEnd = /\r?\n\$\$\$\r?\n/mg;
+	// Save the type
+	var parseType = this.match[1],
+		renderType = this.match[2];
+	// Move past the match
+	this.parser.pos = this.matchRegExp.lastIndex;
+	// Look for the end of the block
+	reEnd.lastIndex = this.parser.pos;
+	var match = reEnd.exec(this.parser.source),
+		text;
+	// Process the block
+	if(match) {
+		text = this.parser.source.substring(this.parser.pos,match.index);
+		this.parser.pos = match.index + match[0].length;
+	} else {
+		text = this.parser.source.substr(this.parser.pos);
+		this.parser.pos = this.parser.sourceLength;
+	}
+	// Parse the block according to the specified type
+	var parser = this.parser.wiki.parseText(parseType,text,{defaultType: "text/plain"});
+	// If there's no render type, just return the parse tree
+	if(!renderType) {
+		return parser.tree;
+	} else {
+		// Otherwise, render to the rendertype and return in a <PRE> tag
+		var renderTree = new $tw.WikiRenderTree(parser,{wiki: $tw.wiki});
+		renderTree.execute();
+		return [{
+			type: "element",
+			tag: "pre",
+			children: [{
+				type: "text",
+				text: renderTree.render(renderType)
+			}]
+		}];
+	}
+};
+
+})();