From 62bc9df89952e7a035a3d6248b4b018e83cc699c Mon Sep 17 00:00:00 2001
From: Paul van Brenk <paul.van.brenk@microsoft.com>
Date: Tue, 3 Feb 2015 14:26:32 -0800
Subject: [PATCH] Support for destructuring + test case.

---
 src/services/services.ts                           | 14 +++++++++++---
 ...tIdentifierDefinitionLocations_destructuring.ts | 14 ++++++++++++++
 2 files changed, 25 insertions(+), 3 deletions(-)
 create mode 100644 tests/cases/fourslash/completionListAtIdentifierDefinitionLocations_destructuring.ts

diff --git a/src/services/services.ts b/src/services/services.ts
index c43f67f94b7..143fd19dd75 100644
--- a/src/services/services.ts
+++ b/src/services/services.ts
@@ -2515,7 +2515,14 @@ module ts {
                                 isFunction(containingNodeKind) ||
                                 containingNodeKind === SyntaxKind.ClassDeclaration ||          // class A<T, |
                                 containingNodeKind === SyntaxKind.FunctionDeclaration ||       // function A<T, |
-                                containingNodeKind === SyntaxKind.InterfaceDeclaration;        // interface A<T, |
+                                containingNodeKind === SyntaxKind.InterfaceDeclaration ||        // interface A<T, |
+                                containingNodeKind === SyntaxKind.ArrayBindingPattern;         //  var [x, y|
+
+                        case SyntaxKind.DotToken:
+                            return containingNodeKind === SyntaxKind.ArrayBindingPattern;       // var [.|
+
+                        case SyntaxKind.OpenBracketToken:
+                            return containingNodeKind === SyntaxKind.ArrayBindingPattern;         //  var [x|
 
                         case SyntaxKind.OpenParenToken:
                             return containingNodeKind === SyntaxKind.CatchClause ||
@@ -2541,8 +2548,9 @@ module ts {
                             return containingNodeKind === SyntaxKind.PropertyDeclaration;
 
                         case SyntaxKind.DotDotDotToken:
-                            return containingNodeKind === SyntaxKind.Parameter
-                                || containingNodeKind === SyntaxKind.Constructor;
+                            return containingNodeKind === SyntaxKind.Parameter ||
+                                containingNodeKind === SyntaxKind.Constructor ||
+                                (previousToken.parent.parent.kind === SyntaxKind.ArrayBindingPattern);  // var [ ...z|
 
                         case SyntaxKind.PublicKeyword:
                         case SyntaxKind.PrivateKeyword:
diff --git a/tests/cases/fourslash/completionListAtIdentifierDefinitionLocations_destructuring.ts b/tests/cases/fourslash/completionListAtIdentifierDefinitionLocations_destructuring.ts
new file mode 100644
index 00000000000..2863b1c0732
--- /dev/null
+++ b/tests/cases/fourslash/completionListAtIdentifierDefinitionLocations_destructuring.ts
@@ -0,0 +1,14 @@
+/// <reference path='fourslash.ts' />
+
+//// var [x/*variable1*/
+
+//// var [x, y/*variable2*/
+
+//// var [./*variable3*/
+
+//// var [x, ...z/*variable4*/
+
+test.markers().forEach((m) => {
+    goTo.position(m.position, m.fileName);
+    verify.completionListIsEmpty();
+});