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Issue 8564001: Make let/const outside of the extended mode early errors (under harmony flag). (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Address comments and adapt preparser. Created 9 years, 1 month ago
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1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
4 // met:
5 //
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
15 //
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28 // Flags: --harmony-scoping
29
30 function CheckException(e) {
31 var string = e.toString();
32 assertInstanceof(e, SyntaxError);
33 assertTrue(string.indexOf("Illegal let") >= 0 ||
34 string.indexOf("Illegal const") >= 0);
Jakob Kummerow 2011/11/15 12:59:23 This line is no longer necessary.
35 }
36
37 function Check(str) {
38 try {
39 eval("(function () { " + str + " })");
40 assertUnreachable();
41 } catch (e) {
42 CheckException(e);
43 }
44 try {
45 eval("(function () { { " + str + " } })");
46 assertUnreachable();
47 } catch (e) {
48 CheckException(e);
49 }
50 }
51
52 // Check for early syntax errors when using let
53 // declarations outside of extended mode.
54 Check("let x;");
55 Check("let x = 1;");
56 Check("let x, y;");
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