enh(csharp) highlight generics in more cases (#2599)

Author: TupikovVladimir

src/languages/csharp.js

@@ -91,7 +91,10 @@ export default function(hljs) {
   var GENERIC_MODIFIER = {
     begin: "<",
     end: ">",
-    keywords: "in out"
+    contains: [ 
+      { beginKeywords: "in out"},
+      TITLE_MODE 
+    ]
   };
   var TYPE_IDENT_RE = hljs.IDENT_RE + '(<' + hljs.IDENT_RE + '(\\s*,\\s*' + hljs.IDENT_RE + ')*>)?(\\[\\])?';
   var AT_IDENTIFIER = {
@@ -177,13 +180,16 @@ export default function(hljs) {
       },
       {
         className: 'function',
-        begin: '(' + TYPE_IDENT_RE + '\\s+)+' + hljs.IDENT_RE + '\\s*\\(', returnBegin: true,
+        begin: '(' + TYPE_IDENT_RE + '\\s+)+' + hljs.IDENT_RE + '\\s*(\\<.+\\>)?\\s*\\(', returnBegin: true,
         end: /\s*[{;=]/, excludeEnd: true,
         keywords: KEYWORDS,
         contains: [
           {
-            begin: hljs.IDENT_RE + '\\s*\\(', returnBegin: true,
-            contains: [hljs.TITLE_MODE],
+            begin: hljs.IDENT_RE + '\\s*(\\<.+\\>)?\\s*\\(', returnBegin: true,
+            contains: [
+              hljs.TITLE_MODE,
+              GENERIC_MODIFIER
+            ],
             relevance: 0
           },
           {

test/markup/csharp/generic_modifiers.expect.txt

@@ -1,7 +1,12 @@
-<span class="hljs-keyword">interface</span> <span class="hljs-title">IObserver</span>&lt;<span class="hljs-keyword">in</span> T&gt;;
+<span class="hljs-keyword">interface</span> <span class="hljs-title">IObserver</span>&lt;<span class="hljs-keyword">in</span> <span class="hljs-title">T</span>&gt;;
 {}
 
-<span class="hljs-keyword">interface</span> <span class="hljs-title">IObservable</span>&lt;<span class="hljs-keyword">out</span> T&gt;;
+<span class="hljs-keyword">interface</span> <span class="hljs-title">IObservable</span>&lt;<span class="hljs-keyword">out</span> <span class="hljs-title">T</span>&gt;;
 {}
 
-<span class="hljs-keyword">public</span> <span class="hljs-keyword">delegate</span> <span class="hljs-keyword">void</span> DContravariant&lt;<span class="hljs-keyword">in</span> A&gt;(A argument);
+<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">delegate</span> <span class="hljs-keyword">void</span> <span class="hljs-title">DContravariant</span>&lt;<span class="hljs-keyword">in</span> <span class="hljs-title">A</span>&gt;(<span class="hljs-params">A argument</span>)</span>;
+
+<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">delegate</span> A <span class="hljs-title">DCovariant</span>&lt;<span class="hljs-keyword">out</span> <span class="hljs-title">A</span>&gt;(<span class="hljs-params"></span>)</span>;
+
+<span class="hljs-function"><span class="hljs-keyword">void</span> <span class="hljs-title">MethodWithGenericParameter</span>&lt;<span class="hljs-title">T</span>&gt;(<span class="hljs-params"></span>)
+</span>

test/markup/csharp/generic_modifiers.txt

@@ -5,3 +5,7 @@ interface IObservable<out T>;
 {}
 
 public delegate void DContravariant<in A>(A argument);
+
+public delegate A DCovariant<out A>();
+
+void MethodWithGenericParameter<T>()

test/markup/csharp/titles.expect.txt

@@ -16,6 +16,6 @@
         }
     }
 
-    <span class="hljs-keyword">public</span> <span class="hljs-keyword">class</span> <span class="hljs-title">TesterA</span>&lt;R, S&gt;  <span class="hljs-keyword">where</span> <span class="hljs-title">R</span> : <span class="hljs-keyword">class</span> <span class="hljs-keyword">where</span> <span class="hljs-title">S</span> : <span class="hljs-title">IComparable</span>
+    <span class="hljs-keyword">public</span> <span class="hljs-keyword">class</span> <span class="hljs-title">TesterA</span>&lt;<span class="hljs-title">R</span>, <span class="hljs-title">S</span>&gt;  <span class="hljs-keyword">where</span> <span class="hljs-title">R</span> : <span class="hljs-keyword">class</span> <span class="hljs-keyword">where</span> <span class="hljs-title">S</span> : <span class="hljs-title">IComparable</span>
     {}
 }