Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1 | // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | // Flags: --no-harmony-restrictive-generators |
| 6 | |
| 7 | // In legacy mode, generators get sloppy-mode block-scoped function hoisting |
| 8 | |
| 9 | // Hoisting to the global scope |
| 10 | |
| 11 | { |
| 12 | function* foo() {} |
| 13 | assertEquals('function', typeof foo); |
| 14 | } |
| 15 | //assertEquals('function', typeof foo); |
| 16 | |
| 17 | // Hoisting within a function scope |
| 18 | (function() { |
| 19 | { function* bar() {} } |
| 20 | assertEquals('function', typeof bar); |
| 21 | })(); |
| 22 | |
| 23 | // Lexical shadowing allowed; hoisting happens |
| 24 | (function() { |
| 25 | function* x() { yield 1; } |
| 26 | { function* x() { yield 2 } } |
| 27 | assertEquals(2, x().next().value); |
| 28 | })(); |
| 29 | |
| 30 | // Duplicates allowed |
| 31 | (function() { |
| 32 | function* y() { yield 1; } |
| 33 | function* y() { yield 2 } |
| 34 | assertEquals(2, y().next().value); |
| 35 | })(); |
| 36 | |
| 37 | // Functions and generators may duplicate each other |
| 38 | (function() { |
| 39 | function* z() { yield 1; } |
| 40 | function z() { return 2 } |
| 41 | assertEquals(2, z()); |
| 42 | |
| 43 | function a() { return 1; } |
| 44 | function* a() { yield 2 } |
| 45 | assertEquals(2, a().next().value); |
| 46 | })(); |
| 47 | |
| 48 | // In strict mode, none of this happens |
| 49 | |
| 50 | (function() { |
| 51 | 'use strict'; |
| 52 | |
| 53 | { function* bar() {} } |
| 54 | assertEquals('undefined', typeof bar); |
| 55 | |
| 56 | // Lexical shadowing allowed; hoisting happens |
| 57 | function* x() { yield 1; } |
| 58 | { function* x() { yield 2 } } |
| 59 | assertEquals(1, x().next().value); |
| 60 | })(); |