highlights(hack): extend queries add tests

tests/query/highlights/hack/as-foreach.hack

@@ -0,0 +1,6 @@
+foreach (($array as vec[]) as $item) {}
+// ^ repeat
+//                   ^ type
+
+# Our expectation test for the code below intentionally includes an ERROR.
+foreach ($array as vec[] as $item) {}

tests/query/highlights/hack/async-functions.hack

@@ -0,0 +1,8 @@
+async function func0(): void {}
+//                        ^ type.builtin
+async function func1<T1 as int>() {}
+//                         ^ type.builtin
+//                      ^ keyword.operator
+						
+
+async ($x) ==> $x + 1;

tests/query/highlights/hack/attribute-type.hack

@@ -0,0 +1,15 @@
+<<A1>>
+newtype T1 = ?shape(
+//     TODO: ?operator (? not captureable at the moment)
+  ?'int' => int
+//       ^ operator
+);
+
+<<A3(1), A2(2,3,)>>
+//       ^ attribute
+type T2 = (function(T1): string);
+//    ^ type
+//          ^ function (cannot capture keyword "function" as keyword.function)
+
+<<A4(1), A5, A6(1,3,4)>>
+newtype T3 as int = int;

tests/query/highlights/hack/generics.hack

@@ -0,0 +1,23 @@
+class Box<T> {
+  //      ^ type
+  //   ^ type
+  protected T $data;
+  // ^ keyword
+  //        ^ type
+
+  public function __construct(T $data) {
+  //                          ^ type
+  //                             ^ parameter
+  // ^ keyword
+  //                    ^ method
+    $this->data = $data;
+  }
+
+  public function getData(): T {
+                // ^ method
+  // ^ keyword
+    return $this->data;
+              // ^ operator
+          // ^ variable.builtin
+  }
+}

tests/query/highlights/hack/heredoc-dollar.hack

@@ -0,0 +1,4 @@
+<<<EOT
+	$('a') abc $(function{return;})
+EOT;
+// <- comment        ^ comment

tests/query/highlights/hack/use.hack

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+use const Space\Const\C;
+//  ^ keyword
+//                    ^ constant
+use function Space\Func\F as E;
+//                           ^ function
+//                      ^ function
+use type Space\Type\T;
+//  ^ keyword
+use namespace Space\Name\N as M;
+//  ^ keyword
+//             ^ namespace
+
+use namespace Space\Name2\N2, Space\Nothing\N3 as N8, type Space\Type2\N4,;
+//                        ^ namespace
+//                                                                      ^ type
+use namespace Space\Name\N10\{A as A2, B\};
+//                        ^ namespace
+//                                     ^ namespace
+//                                 ^ namespace
+use namespace Space\Name\{\C, Slash as Forward};
+
+use \What\Is\This\{function A as A2, B, const H\S\L as stdlib, function F};
+
+use type \{kind,};
+use Q\B\{kind2,};
+//    ^ namespace
+use type Q\B\{kind3,};
+// <- include

tests/query/highlights/hack/using.hack

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+using ($new = new Object(), $file = new File('using', '+using')) {}
+// <- keyword
+//                                       ^ type

tests/query/highlights/hack/xhp.hack

@@ -0,0 +1,10 @@
+$user_name = 'Fred';
+echo "<tt>Hello <strong>$user_name</tt></strong>";
+
+// XHP: Typechecked, well-formed, and secure
+$user_name = 'Andrew';
+$xhp = <tt>Hello <strong>{$user_name}</strong></tt>;
+//       ^ tag
+//                 ^ tag
+//            ^ string
+echo await $xhp->toStringAsync();

tests/query/highlights/xhp-intro.hack

@@ -0,0 +1,46 @@
+// From https://docs.hhvm.com/hack/XHP/introduction (MIT licensed)
+
+use namespace Facebook\XHP\Core as x;
+use type Facebook\XHP\HTML\{XHPHTMLHelpers, a, form};
+
+
+final xhp class a_post extends x\element {
+// ^ keyword
+//     ^ keyword
+//                        ^ keyword
+  use XHPHTMLHelpers;
+
+  attribute string href @required;
+  //                      ^ attribute
+  attribute string target;
+  // ^ keyword
+
+  <<__Override>>
+  protected async function renderAsync(): Awaitable<x\node> {
+    $id = $this->getID();
+
+    $anchor = <a>{$this->getChildren()}</a>;
+                                    // ^ tag.delimiter
+                                    // ^ tag
+    $form = (
+      <form
+        id={$id}
+        method="post"
+        action={$this->:href}
+        target={$this->:target}
+        class="postLink">
+        {$anchor}
+      </form>
+    );
+
+    $anchor->setAttribute(
+      'onclick',
+      'document.getElementById("'.$id.'").submit(); return false;',
+    );
+    $anchor->setAttribute('href', '#');
+    //        ^ method
+
+    return $form;
+  }
+}
+