(java) add Java 14 switch expression keyword yield (#3650)

Author: MBoegers

CHANGES.md

@@ -14,6 +14,7 @@ Grammars:
 - fix(bash) recognize the `((` keyword [Nick Chambers][]
 - fix(nix) support escaped dollar signs in strings [h7x4][]
 - enh(cmake) support bracket comments [Hirse][]
+- enh(java) add yield keyword to java [MBoegers][]
 - enh(java) add permits keyword to java [MBoegers][]
 
 [Josh Goebel]: https://github.com/joshgoebel

src/languages/java.js

@@ -73,6 +73,7 @@ export default function(hljs) {
     'exports',
     'do',
     'sealed',
+    'yield',
     'permits'
   ];
 

test/markup/java/switch.expect.txt

@@ -0,0 +1,13 @@
+<span class="hljs-keyword">switch</span>(a) {
+ <span class="hljs-keyword">case</span> <span class="hljs-literal">null</span> -&gt; <span class="hljs-keyword">yield</span> <span class="hljs-string">&quot;n&quot;</span>;
+ <span class="hljs-keyword">case</span> String s -&gt; <span class="hljs-keyword">yield</span> <span class="hljs-string">&quot;s&quot;</span>;
+ <span class="hljs-keyword">case</span> Object o -&gt; <span class="hljs-keyword">yield</span> <span class="hljs-string">&quot;o&quot;</span>;
+ <span class="hljs-keyword">default</span>: <span class="hljs-keyword">yield</span> <span class="hljs-string">&quot;d&quot;</span>,
+}
+
+<span class="hljs-keyword">switch</span>(a) {
+ <span class="hljs-keyword">case</span> <span class="hljs-literal">null</span>: <span class="hljs-keyword">return</span> <span class="hljs-string">&quot;n&quot;</span>;
+ <span class="hljs-keyword">case</span> <span class="hljs-string">&quot;s&quot;</span>: <span class="hljs-keyword">return</span> <span class="hljs-string">&quot;s&quot;</span>;
+ <span class="hljs-keyword">case</span> <span class="hljs-string">&quot;o&quot;</span>: <span class="hljs-keyword">return</span> <span class="hljs-string">&quot;o&quot;</span>;
+ <span class="hljs-keyword">default</span>: <span class="hljs-keyword">return</span> <span class="hljs-string">&quot;d&quot;</span>;
+}

test/markup/java/switch.txt

@@ -0,0 +1,13 @@
+switch(a) {
+ case null -> yield "n";
+ case String s -> yield "s";
+ case Object o -> yield "o";
+ default: yield "d",
+}
+
+switch(a) {
+ case null: return "n";
+ case "s": return "s";
+ case "o": return "o";
+ default: return "d";
+}