michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: //-----------------------------------------------------------------------------
michael@0: var BUGNUMBER = 351070;
michael@0: var summary = 'decompilation of let declaration should not change scope';
michael@0: var actual = '';
michael@0: var expect = '';
michael@0: 
michael@0: 
michael@0: //-----------------------------------------------------------------------------
michael@0: test();
michael@0: //-----------------------------------------------------------------------------
michael@0: 
michael@0: function test()
michael@0: {
michael@0:   enterFunc ('test');
michael@0:   printBugNumber(BUGNUMBER);
michael@0:   printStatus (summary);
michael@0:  
michael@0:   try
michael@0:   {
michael@0:     var pfx  = "(function f() { var n = 2, a = 2; ",
michael@0:       decl = " let a = 3;",
michael@0:       end  = " return a; })";
michael@0: 
michael@0:     var table = [
michael@0:       ["if (!!true)",       ""],
michael@0:       ["if (!!true)",       " else foopy();"],
michael@0:       ["if (!true); else",  ""],
michael@0:       ["do ",               " while (false);"],
michael@0:       ["while (--n)",       ""],
michael@0:       ["for (--n;n;--n)",   ""],
michael@0:       ["for (a in this)",   ""],
michael@0:       ["with (this)",       ""],
michael@0:       ];
michael@0: 
michael@0:     expect = 3;
michael@0: 
michael@0:     for (i = 0; i < table.length; i++) {
michael@0:       var src = pfx + table[i][0] + decl + table[i][1] + end;
michael@0:       print('src: ' + src);
michael@0:       var fun = eval(src);
michael@0:       var testval = fun();
michael@0:       reportCompare(expect, testval, summary + ': ' + src);
michael@0:       if (testval != expect) {
michael@0:         break;
michael@0:       }
michael@0:       print('uneval: ' + uneval(fun));
michael@0:       var declsrc = '(' +
michael@0:         src.slice(1, -1).replace('function f', 'function f' + i) + ')';
michael@0:       print('declsrc: ' + declsrc);
michael@0:       this['f' + i] = eval(declsrc);
michael@0:       print('f' + i + ': ' + this['f' + i]);
michael@0:     }
michael@0:   }
michael@0:   catch(ex)
michael@0:   {
michael@0:     // See https://bugzilla.mozilla.org/show_bug.cgi?id=408957
michael@0:     summary = 'let declaration must be direct child of block or top-level implicit block';
michael@0:     expect = 'SyntaxError';
michael@0:     actual = ex.name;
michael@0:     reportCompare(expect, actual, summary);
michael@0:   }
michael@0: 
michael@0:   exitFunc ('test');
michael@0: }