js/src/jit-test/tests/parser/bug-889628.js@6474c204b198 (annotated)
js/src/jit-test/tests/parser/bug-889628.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | // Destructuring assignment to eval or arguments in destructuring is a SyntaxError |
| michael@0 | 2 | |
| michael@0 | 3 | load(libdir + "asserts.js"); |
| michael@0 | 4 | |
| michael@0 | 5 | var patterns = [ |
| michael@0 | 6 | "[_]", |
| michael@0 | 7 | "[a, b, _]", |
| michael@0 | 8 | "[[_]]", |
| michael@0 | 9 | "[[], [{}, [_]]]", |
| michael@0 | 10 | "{x:_}", |
| michael@0 | 11 | "{x:y, z:_}", |
| michael@0 | 12 | "{0:_}", |
| michael@0 | 13 | "{_}", |
| michael@0 | 14 | //"[..._]" |
| michael@0 | 15 | ]; |
| michael@0 | 16 | |
| michael@0 | 17 | // If the assertion below fails, congratulations! It means you have added |
| michael@0 | 18 | // spread operator support to destructuring assignment. Simply uncomment the |
| michael@0 | 19 | // "[..._]" case above. Then delete this comment and assertion. |
| michael@0 | 20 | assertThrowsInstanceOf(() => Function("[...x] = [1]"), ReferenceError); |
| michael@0 | 21 | |
| michael@0 | 22 | for (var pattern of patterns) { |
| michael@0 | 23 | var stmt = pattern + " = obj"; |
| michael@0 | 24 | if (stmt[0] == "{") |
| michael@0 | 25 | stmt = "(" + stmt + ")"; |
| michael@0 | 26 | stmt += ";" |
| michael@0 | 27 | |
| michael@0 | 28 | // stmt is a legal statement... |
| michael@0 | 29 | Function(stmt); |
| michael@0 | 30 | |
| michael@0 | 31 | // ...but not if you replace _ with one of these two names. |
| michael@0 | 32 | for (var name of ["eval", "arguments"]) { |
| michael@0 | 33 | var s = stmt.replace("_", name); |
| michael@0 | 34 | assertThrowsInstanceOf(() => Function(s), SyntaxError); |
| michael@0 | 35 | assertThrowsInstanceOf(() => eval(s), SyntaxError); |
| michael@0 | 36 | assertThrowsInstanceOf(() => eval("'use strict'; " + s), SyntaxError); |
| michael@0 | 37 | } |
| michael@0 | 38 | } |
