Allow to find all references of the 'this 'keyword

tests/cases/fourslash/findAllRefsThisKeyword.ts

@@ -0,0 +1,33 @@
+/// <reference path='fourslash.ts' />
+// @noLib: true
+
+////[|this|];
+////function f([|this|]) {
+////    return [|this|];
+////    function g([|this|]) { return [|this|]; }
+////}
+////class C {
+////    static x() {
+////        [|this|];
+////    }
+////    static y() {
+////        () => [|this|];
+////    }
+////    constructor() {
+////        [|this|];
+////    }
+////    method() {
+////        () => [|this|];
+////    }
+////}
+////// These are *not* real uses of the 'this' keyword, they are identifiers.
+////const x = { [|this|]: 0 }
+////x.[|this|];
+
+const [global, f0, f1, g0, g1, x, y, constructor, method, propDef, propUse] = test.ranges();
+verify.referencesOf(global, [global]);
+verify.rangesReferenceEachOther([f0, f1]);
+verify.rangesReferenceEachOther([g0, g1]);
+verify.rangesReferenceEachOther([x, y]);
+verify.rangesReferenceEachOther([constructor, method]);
+verify.rangesReferenceEachOther([propDef, propUse]);

tests/cases/fourslash/findAllRefsThisKeywordMultipleFiles.ts

@@ -1,18 +1,15 @@
 /// <reference path='fourslash.ts' />
 
 // @Filename: file1.ts
-////this; this;
+////[|this|]; [|this|];
 
 // @Filename: file2.ts
-////this;
-////this;
+////[|this|];
+////[|this|];
 
 // @Filename: file3.ts
-//// ((x = this, y) => t/**/his)(this, this);
+//// ((x = [|this|], y) => [|this|])([|this|], [|this|]);
+//// // different 'this'
+//// function f(this) { return this; }
 
-goTo.file("file1.ts");
-goTo.marker();
-
-// TODO (drosen): The CURRENT behavior is that findAllRefs doesn't work on 'this' or 'super' keywords.
-//                This should change down the line.
-verify.referencesCountIs(0);
+verify.rangesReferenceEachOther();

tests/cases/fourslash/fourslash.ts

@@ -216,7 +216,7 @@ declare namespace FourSlashInterface {
         }[]): void;
         renameInfoSucceeded(displayName?: string, fullDisplayName?: string, kind?: string, kindModifiers?: string): void;
         renameInfoFailed(message?: string): void;
-        renameLocations(findInStrings: boolean, findInComments: boolean): void;
+        renameLocations(findInStrings: boolean, findInComments: boolean, ranges?: Range[]): void;
         verifyQuickInfoDisplayParts(kind: string, kindModifiers: string, textSpan: {
             start: number;
             length: number;

tests/cases/fourslash/renameThis.ts

@@ -0,0 +1,22 @@
+/// <reference path='fourslash.ts'/>
+
+////function f([|this|]) {
+////    return [|this|];
+////}
+////this/**/;
+////const _ = { [|this|]: 0 }.[|this|];
+
+let [r0, r1, r2, r3] = test.ranges()
+for (let range of [r0, r1]) {
+    goTo.position(range.start);
+    verify.renameLocations(/*findInStrings*/ false, /*findInComments*/ false, [r0, r1]);
+}
+
+// Trying to rename a legitimate 'this' should fail
+goTo.marker();
+verify.renameInfoFailed("You cannot rename this element.");
+
+for (let range of [r2, r3]) {
+    goTo.position(range.start);
+    verify.renameLocations(/*findInStrings*/ false, /*findInComments*/ false, [r2, r3]);
+}