Reland of Ship ES2015 sloppy-mode function hoisting, let, class

test/mjsunit/harmony/block-scope-class.js

-// Copyright 2015 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Test for conflicting variable bindings.
-
-// Flags: --harmony-sloppy --harmony-sloppy-function
-
-function AssertEqualsStrictAndSloppy(value, code) {
-  assertEquals(value, eval("(function() {" + code + "})()"));
-  assertEquals(value, eval("(function() { 'use strict'; " + code + "})()"));
-  assertEquals(value, eval("(function() { var x = 0; {" + code + "} })()"));
-  assertEquals(value, eval("(function() { 'use strict'; var x = 0; {"
-                           + code + "} })()"));
-}
-
-function AssertThrowsStrictAndSloppy(code, error) {
-  assertThrows("(function() {" + code + "})()", error);
-  assertThrows("(function() { 'use strict'; " + code + "})()", error);
-  assertThrows("(function() { var x = 0; { " + code + "} })()", error);
-  assertThrows("(function() { 'use strict'; var x = 0; {" + code + "} })()",
-               error);
-}
-
-(function TestClassTDZ() {
-  AssertEqualsStrictAndSloppy(
-      "x", "function f() { return x; }; class x { }; return f().name;");
-  AssertEqualsStrictAndSloppy
-      ("x", "class x { }; function f() { return x; }; return f().name;");
-  AssertEqualsStrictAndSloppy(
-      "x", "class x { }; var result = f().name; " +
-      "function f() { return x; }; return result;");
-  AssertThrowsStrictAndSloppy(
-      "function f() { return x; }; f(); class x { };", ReferenceError);
-  AssertThrowsStrictAndSloppy(
-      "f(); function f() { return x; }; class x { };", ReferenceError);
-  AssertThrowsStrictAndSloppy(
-      "f(); class x { }; function f() { return x; };", ReferenceError);
-  AssertThrowsStrictAndSloppy(
-      "var x = 1; { f(); class x { }; function f() { return x; }; }",
-      ReferenceError);
-  AssertThrowsStrictAndSloppy("x = 3; class x { };", ReferenceError)
-})();
-
-(function TestClassNameConflict() {
-  AssertThrowsStrictAndSloppy("class x { }; var x;", SyntaxError);
-  AssertThrowsStrictAndSloppy("var x; class x { };", SyntaxError);
-  AssertThrowsStrictAndSloppy("class x { }; function x() { };", SyntaxError);
-  AssertThrowsStrictAndSloppy("function x() { }; class x { };", SyntaxError);
-  AssertThrowsStrictAndSloppy("class x { }; for (var x = 0; false;) { };",
-                              SyntaxError);
-  AssertThrowsStrictAndSloppy("for (var x = 0; false;) { }; class x { };",
-                              SyntaxError);
-})();
-
-(function TestClassMutableBinding() {
-  AssertEqualsStrictAndSloppy(
-      "x3", "class x { }; var y = x.name; x = 3; return y + x;")
-})();