Emit detached comments for constructor body

Author: sheetalkamat

src/compiler/emitter.ts

@@ -1616,6 +1616,9 @@ module ts {
                     write(" {");
                     scopeEmitStart(node, "constructor");
                     increaseIndent();
+                    if (ctor) {
+                        emitDetachedComments((<Block>ctor.body).statements);
+                    }
                     emitCaptureThisForNodeIfNecessary(node);
                     if (ctor) {
                         emitDefaultValueAssignments(ctor);

tests/baselines/reference/detachedCommentAtStartOfConstructor1.js

@@ -0,0 +1,23 @@
+//// [detachedCommentAtStartOfConstructor1.ts]
+class TestFile {
+    public message: string;
+    public name;
+    constructor(message: string) {
+        /// <summary>Test summary</summary>
+        /// <param name="message" type="String" />
+        var getMessage = () => message + this.name;
+        this.message = getMessage();
+    }
+}
+
+//// [detachedCommentAtStartOfConstructor1.js]
+var TestFile = (function () {
+    function TestFile(message) {
+        var _this = this;
+        /// <summary>Test summary</summary>
+        /// <param name="message" type="String" />
+        var getMessage = function () { return message + _this.name; };
+        this.message = getMessage();
+    }
+    return TestFile;
+})();

tests/baselines/reference/detachedCommentAtStartOfConstructor2.js

@@ -0,0 +1,24 @@
+//// [detachedCommentAtStartOfConstructor2.ts]
+class TestFile {
+    public message: string;
+    public name: string;
+    constructor(message: string) {
+        /// <summary>Test summary</summary>
+        /// <param name="message" type="String" />
+
+        var getMessage = () => message + this.name;
+        this.message = getMessage();
+    }
+}
+
+//// [detachedCommentAtStartOfConstructor2.js]
+var TestFile = (function () {
+    function TestFile(message) {
+        /// <summary>Test summary</summary>
+        /// <param name="message" type="String" />
+        var _this = this;
+        var getMessage = function () { return message + _this.name; };
+        this.message = getMessage();
+    }
+    return TestFile;
+})();

tests/baselines/reference/lambdaArgCrash.js

@@ -43,9 +43,9 @@ var __extends = this.__extends || function (d, b) {
 };
 var Event = (function () {
     function Event() {
-        this._listeners = [];
         // TODO: remove
         this._listeners = [];
+        this._listeners = [];
     }
     Event.prototype.add = function (listener) {
         /// <summary>Registers a new listener for the event.</summary>

tests/cases/compiler/detachedCommentAtStartOfConstructor1.ts

@@ -0,0 +1,10 @@
+class TestFile {
+    public message: string;
+    public name;
+    constructor(message: string) {
+        /// <summary>Test summary</summary>
+        /// <param name="message" type="String" />
+        var getMessage = () => message + this.name;
+        this.message = getMessage();
+    }
+}

tests/cases/compiler/detachedCommentAtStartOfConstructor2.ts

@@ -0,0 +1,11 @@
+class TestFile {
+    public message: string;
+    public name: string;
+    constructor(message: string) {
+        /// <summary>Test summary</summary>
+        /// <param name="message" type="String" />
+
+        var getMessage = () => message + this.name;
+        this.message = getMessage();
+    }
+}