Support generic type arguments in attributes

grammars/csharp.tmLanguage

@@ -721,6 +721,10 @@
             <key>include</key>
             <string>#type-name</string>
           </dict>
+          <dict>
+            <key>include</key>
+            <string>#type-arguments</string>
+          </dict>
           <dict>
             <key>include</key>
             <string>#attribute-arguments</string>

grammars/csharp.tmLanguage.cson

@@ -475,6 +475,9 @@ repository:
       {
         include: "#type-name"
       }
+      {
+        include: "#type-arguments"
+      }
       {
         include: "#attribute-arguments"
       }

src/csharp.tmLanguage.yml

@@ -205,6 +205,7 @@ repository:
   attribute:
     patterns:
     - include: '#type-name'
+    - include: '#type-arguments'
     - include: '#attribute-arguments'
 
   attribute-arguments:

test/attribute.tests.ts

@@ -177,5 +177,81 @@ describe("Attributes", () => {
                 Token.Punctuation.CloseParen,
                 Token.Punctuation.CloseBracket]);
         });
+
+        it("Generic attributes should be highlighted single type parameter", async () => {
+
+                const input = `[Foo<T1>]`;
+                const tokens = await tokenize(input);
+
+                tokens.should.deep.equal([
+                    Token.Punctuation.OpenBracket,
+                    Token.Type("Foo"),
+                    Token.Punctuation.TypeParameter.Begin,
+                    Token.Type("T1"),
+                    Token.Punctuation.TypeParameter.End,
+                    Token.Punctuation.CloseBracket]);
+        });
+
+        it("Generic attributes should be highlighted multiple type parameters", async () => {
+
+                const input = `[Foo<T1, T2>]`;
+                const tokens = await tokenize(input);
+
+                tokens.should.deep.equal([
+                    Token.Punctuation.OpenBracket,
+                    Token.Type("Foo"),
+                    Token.Punctuation.TypeParameter.Begin,
+                    Token.Type("T1"),
+                    Token.Punctuation.Comma,
+                    Token.Type("T2"),
+                    Token.Punctuation.TypeParameter.End,
+                    Token.Punctuation.CloseBracket]);
+        });
+
+        it("Generic attributes should be highlighted multiple type parameters with regular arguments", async () => {
+
+                const input = `[Foo<T1, T2>(true)]`;
+                const tokens = await tokenize(input);
+
+                tokens.should.deep.equal([
+                    Token.Punctuation.OpenBracket,
+                    Token.Type("Foo"),
+                    Token.Punctuation.TypeParameter.Begin,
+                    Token.Type("T1"),
+                    Token.Punctuation.Comma,
+                    Token.Type("T2"),
+                    Token.Punctuation.TypeParameter.End,
+                    Token.Punctuation.OpenParen,
+                    Token.Literal.Boolean.True,
+                    Token.Punctuation.CloseParen,
+                    Token.Punctuation.CloseBracket]);
+        });
+
+        it("Generic attributes should be highlighted empty", async () => {
+
+                const input = `[Foo<>]`;
+                const tokens = await tokenize(input);
+
+                tokens.should.deep.equal([
+                    Token.Punctuation.OpenBracket,
+                    Token.Type("Foo"),
+                    Token.Punctuation.TypeParameter.Begin,
+                    Token.Punctuation.TypeParameter.End,
+                    Token.Punctuation.CloseBracket]);
+        });
+
+        it("Generic attributes should be highlighted empty with comma", async () => {
+
+                const input = `[Foo<,>]`;
+                const tokens = await tokenize(input);
+
+                tokens.should.deep.equal([
+                    Token.Punctuation.OpenBracket,
+                    Token.Type("Foo"),
+                    Token.Punctuation.TypeParameter.Begin,
+                    Token.Punctuation.Comma,
+                    Token.Punctuation.TypeParameter.End,
+                    Token.Punctuation.CloseBracket]);
+        });
     });
-});
+});