From 4ad1898902b04091e17cb04c6a6708de2fe34136 Mon Sep 17 00:00:00 2001
From: Thibaut Courouble <thibaut@me.com>
Date: Sun, 24 Jul 2016 11:33:23 -0400
Subject: [PATCH] Update Prism.js

---
 assets/javascripts/vendor/prism.js | 140 ++++++++++++++++++++---------
 1 file changed, 98 insertions(+), 42 deletions(-)

diff --git a/assets/javascripts/vendor/prism.js b/assets/javascripts/vendor/prism.js
index 90b8d7a6..85a80948 100644
--- a/assets/javascripts/vendor/prism.js
+++ b/assets/javascripts/vendor/prism.js
@@ -1,4 +1,4 @@
-/* http://prismjs.com/download.html?themes=prism&languages=markup+css+clike+javascript+c+cpp+coffeescript+ruby+elixir+go+json+kotlin+lua+nginx+perl+php+python+rust+sql+typescript */
+/* http://prismjs.com/download.html?themes=prism&languages=markup+css+clike+javascript+c+cpp+coffeescript+ruby+elixir+go+json+kotlin+lua+nginx+perl+php+python+crystal+rust+sql+typescript */
 var _self = (typeof window !== 'undefined')
 	? window   // if in browser
 	: (
@@ -281,9 +281,16 @@ var _ = _self.Prism = {
 					lookbehindLength = 0,
 					alias = pattern.alias;
 
+				if (greedy && !pattern.pattern.global) {
+					// Without the global flag, lastIndex won't work
+					var flags = pattern.pattern.toString().match(/[imuy]*$/)[0];
+					pattern.pattern = RegExp(pattern.pattern.source, flags + "g");
+				}
+
 				pattern = pattern.pattern || pattern;
 
-				for (var i=0; i<strarr.length; i++) { // Don’t cache length as it changes during the loop
+				// Don’t cache length as it changes during the loop
+				for (var i=0, pos = 0; i<strarr.length; pos += (strarr[i].matchedStr || strarr[i]).length, ++i) {
 
 					var str = strarr[i];
 
@@ -303,40 +310,38 @@ var _ = _self.Prism = {
 
 					// Greedy patterns can override/remove up to two previously matched tokens
 					if (!match && greedy && i != strarr.length - 1) {
-						// Reconstruct the original text using the next two tokens
-						var nextToken = strarr[i + 1].matchedStr || strarr[i + 1],
-						    combStr = str + nextToken;
-
-						if (i < strarr.length - 2) {
-							combStr += strarr[i + 2].matchedStr || strarr[i + 2];
+						pattern.lastIndex = pos;
+						match = pattern.exec(text);
+						if (!match) {
+							break;
 						}
 
-						// Try the pattern again on the reconstructed text
-						pattern.lastIndex = 0;
-						match = pattern.exec(combStr);
-						if (!match) {
-							continue;
+						var from = match.index + (lookbehind ? match[1].length : 0),
+						    to = match.index + match[0].length,
+						    k = i,
+						    p = pos;
+
+						for (var len = strarr.length; k < len && p < to; ++k) {
+							p += (strarr[k].matchedStr || strarr[k]).length;
+							// Move the index i to the element in strarr that is closest to from
+							if (from >= p) {
+								++i;
+								pos = p;
+							}
 						}
 
-						var from = match.index + (lookbehind ? match[1].length : 0);
-						// To be a valid candidate, the new match has to start inside of str
-						if (from >= str.length) {
+						/*
+						 * If strarr[i] is a Token, then the match starts inside another Token, which is invalid
+						 * If strarr[k - 1] is greedy we are in conflict with another greedy pattern
+						 */
+						if (strarr[i] instanceof Token || strarr[k - 1].greedy) {
 							continue;
 						}
-						var to = match.index + match[0].length,
-						    len = str.length + nextToken.length;
 
 						// Number of tokens to delete and replace with the new match
-						delNum = 3;
-
-						if (to <= len) {
-							if (strarr[i + 1].greedy) {
-								continue;
-							}
-							delNum = 2;
-							combStr = combStr.slice(0, len);
-						}
-						str = combStr;
+						delNum = k - i;
+						str = text.slice(pos, p);
+						match.index -= pos;
 					}
 
 					if (!match) {
@@ -447,7 +452,7 @@ Token.stringify = function(o, language, parent) {
 		attributes += (attributes ? ' ' : '') + name + '="' + (env.attributes[name] || '') + '"';
 	}
 
-	return '<' + env.tag + ' class="' + env.classes.join(' ') + '" ' + attributes + '>' + env.content + '</' + env.tag + '>';
+	return '<' + env.tag + ' class="' + env.classes.join(' ') + '"' + (attributes ? ' ' + attributes : '') + '>' + env.content + '</' + env.tag + '>';
 
 };
 
@@ -480,7 +485,11 @@ Token.stringify = function(o, language, parent) {
 
 // 	if (document.addEventListener && !script.hasAttribute('data-manual')) {
 // 		if(document.readyState !== "loading") {
-// 			requestAnimationFrame(_.highlightAll, 0);
+// 			if (window.requestAnimationFrame) {
+// 				window.requestAnimationFrame(_.highlightAll);
+// 			} else {
+// 				window.setTimeout(_.highlightAll, 16);
+// 			}
 // 		}
 // 		else {
 // 			document.addEventListener('DOMContentLoaded', _.highlightAll);
@@ -507,7 +516,7 @@ Prism.languages.markup = {
 	'doctype': /<!DOCTYPE[\w\W]+?>/,
 	'cdata': /<!\[CDATA\[[\w\W]*?]]>/i,
 	'tag': {
-		pattern: /<\/?(?!\d)[^\s>\/=.$<]+(?:\s+[^\s>\/=]+(?:=(?:("|')(?:\\\1|\\?(?!\1)[\w\W])*\1|[^\s'">=]+))?)*\s*\/?>/i,
+		pattern: /<\/?(?!\d)[^\s>\/=$<]+(?:\s+[^\s>\/=]+(?:=(?:("|')(?:\\\1|\\?(?!\1)[\w\W])*\1|[^\s'">=]+))?)*\s*\/?>/i,
 		inside: {
 			'tag': {
 				pattern: /^<\/?[^\s>\/]+/i,
@@ -630,7 +639,8 @@ Prism.languages.javascript = Prism.languages.extend('clike', {
 	'keyword': /\b(as|async|await|break|case|catch|class|const|continue|debugger|default|delete|do|else|enum|export|extends|finally|for|from|function|get|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|set|static|super|switch|this|throw|try|typeof|var|void|while|with|yield)\b/,
 	'number': /\b-?(0x[\dA-Fa-f]+|0b[01]+|0o[0-7]+|\d*\.?\d+([Ee][+-]?\d+)?|NaN|Infinity)\b/,
 	// Allow for all non-ASCII characters (See http://stackoverflow.com/a/2008444)
-	'function': /[_$a-zA-Z\xA0-\uFFFF][_$a-zA-Z0-9\xA0-\uFFFF]*(?=\()/i
+	'function': /[_$a-zA-Z\xA0-\uFFFF][_$a-zA-Z0-9\xA0-\uFFFF]*(?=\()/i,
+	'operator': /--?|\+\+?|!=?=?|<=?|>=?|==?=?|&&?|\|\|?|\?|\*\*?|\/|~|\^|%|\.{3}/
 });
 
 Prism.languages.insertBefore('javascript', 'keyword', {
@@ -1285,7 +1295,8 @@ Prism.languages.php = Prism.languages.extend('clike', {
 	'constant': /\b[A-Z0-9_]{2,}\b/,
 	'comment': {
 		pattern: /(^|[^\\])(?:\/\*[\w\W]*?\*\/|\/\/.*)/,
-		lookbehind: true
+		lookbehind: true,
+		greedy: true
 	}
 });
 
@@ -1331,7 +1342,6 @@ if (Prism.languages.markup) {
 
 		env.tokenStack = [];
 
-		env.backupCode = env.code;
 		env.code = env.code.replace(/(?:<\?php|<\?)[\w\W]*?(?:\?>)/ig, function(match) {
 			env.tokenStack.push(match);
 
@@ -1339,14 +1349,6 @@ if (Prism.languages.markup) {
 		});
 	});
 
-	// Restore env.code for other plugins (e.g. line-numbers)
-	Prism.hooks.add('before-insert', function(env) {
-		if (env.language === 'php') {
-			env.code = env.backupCode;
-			delete env.backupCode;
-		}
-	});
-
 	// Re-insert the tokens after highlighting
 	Prism.hooks.add('after-highlight', function(env) {
 		if (env.language !== 'php') {
@@ -1406,6 +1408,60 @@ Prism.languages.python= {
 	'punctuation' : /[{}[\];(),.:]/
 };
 
+(function(Prism) {
+	Prism.languages.crystal = Prism.languages.extend('ruby', {
+		keyword: [
+			/\b(?:abstract|alias|as|asm|begin|break|case|class|def|do|else|elsif|end|ensure|enum|extend|for|fun|if|ifdef|include|instance_sizeof|lib|macro|module|next|of|out|pointerof|private|protected|rescue|return|require|self|sizeof|struct|super|then|type|typeof|union|unless|until|when|while|with|yield|__DIR__|__FILE__|__LINE__)\b/,
+			{
+				pattern: /(\.\s*)(?:is_a|responds_to)\?/,
+				lookbehind: true
+			}
+		],
+
+		number: /\b(?:0b[01_]*[01]|0o[0-7_]*[0-7]|0x[0-9a-fA-F_]*[0-9a-fA-F]|(?:[0-9](?:[0-9_]*[0-9])?)(?:\.[0-9_]*[0-9])?(?:[eE][+-]?[0-9_]*[0-9])?)(?:_(?:[uif](?:8|16|32|64))?)?\b/,
+	});
+
+	var rest = Prism.util.clone(Prism.languages.crystal);
+
+	Prism.languages.insertBefore('crystal', 'string', {
+		attribute: {
+			pattern: /@\[.+?\]/,
+			alias: 'attr-name',
+			inside: {
+				delimiter: {
+					pattern: /^@\[|\]$/,
+					alias: 'tag'
+				},
+				rest: rest
+			}
+		},
+
+		expansion: [
+		{
+			pattern: /\{\{.+?\}\}/,
+			inside: {
+				delimiter: {
+					pattern: /^\{\{|\}\}$/,
+					alias: 'tag'
+				},
+				rest: rest
+			}
+		},
+		{
+			pattern: /\{%.+?%\}/,
+			inside: {
+				delimiter: {
+					pattern: /^\{%|%\}$/,
+					alias: 'tag'
+				},
+				rest: rest
+			}
+		}
+		]
+	});
+
+}(Prism));
+
 /* TODO
 	Add support for Markdown notation inside doc comments
 	Add support for nested block comments...