Implemented getOccsAtPos for try-catch-finally.

Author: DanielRosenwasser

src/services/services.ts

@@ -2169,10 +2169,30 @@ module ts {
             }
 
             switch (node.kind) {
+                case SyntaxKind.TryKeyword:
+                case SyntaxKind.CatchKeyword:
+                case SyntaxKind.FinallyKeyword:
+                    return getTryCatchFinallyOccurrences(<TryStatement>node.parent.parent);
             }
 
             return undefined;
 
+            function getTryCatchFinallyOccurrences(tryStatement: TryStatement): ReferenceEntry[] {
+                var keywords: Node[] = [];
+
+                keywords.push(tryStatement.getFirstToken())
+
+                if (tryStatement.catchBlock) {
+                    keywords.push(tryStatement.catchBlock.getFirstToken());
+                }
+
+                if (tryStatement.finallyBlock) {
+                    keywords.push(tryStatement.finallyBlock.getFirstToken());
+                }
+
+                return keywordsToReferenceEntries(keywords);
+            }
+
             function keywordsToReferenceEntries(keywords: Node[]): ReferenceEntry[]{
                 return keywords.map(keyword =>
                     new ReferenceEntry(filename, TypeScript.TextSpan.fromBounds(keyword.getStart(), keyword.end), /* isWriteAccess */ false)

tests/cases/fourslash/getOccurrencesTryCatchFinally.ts

@@ -0,0 +1,27 @@
+/// <reference path='fourslash.ts' />
+
+/////*1*/[|try|] {
+////    try {
+////    }
+////    catch (x) {
+////    }
+////
+////    try {
+////    }
+////    finally {
+////    }
+////}
+////[|cat/*2*/ch|] (e) {
+////}
+////[|fina/*3*/lly|] {
+////}
+
+
+for (var i = 1; i <= test.markers().length; i++) {
+    goTo.marker("" + i);
+    verify.occurrencesAtPositionCount(3);
+
+    test.ranges().forEach(range => {
+        verify.occurrencesAtPositionContains(range, false);
+    });
+}

tests/cases/fourslash/getOccurrencesTryCatchFinally2.ts

@@ -0,0 +1,27 @@
+/// <reference path='fourslash.ts' />
+
+////try {
+////    [|t/*1*/r/*2*/y|] {
+////    }
+////    [|c/*3*/atch|] (x) {
+////    }
+////
+////    try {
+////    }
+////    finally {
+////    }
+////}
+////catch (e) {
+////}
+////finally {
+////}
+
+
+for (var i = 1; i <= test.markers().length; i++) {
+    goTo.marker("" + i);
+    verify.occurrencesAtPositionCount(2);
+
+    test.ranges().forEach(range => {
+        verify.occurrencesAtPositionContains(range, false);
+    });
+}

tests/cases/fourslash/getOccurrencesTryCatchFinally3.ts

@@ -0,0 +1,27 @@
+/// <reference path='fourslash.ts' />
+
+////try {
+////    try {
+////    }
+////    catch (x) {
+////    }
+////
+////    [|t/*1*/r/*2*/y|] {
+////    }
+////    [|finall/*3*/y|] {
+////    }
+////}
+////catch (e) {
+////}
+////finally {
+////}
+
+
+for (var i = 1; i <= test.markers().length; i++) {
+    goTo.marker("" + i);
+    verify.occurrencesAtPositionCount(2);
+
+    test.ranges().forEach(range => {
+        verify.occurrencesAtPositionContains(range, false);
+    });
+}