| /* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */ |
| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| |
| /* |
| * |
| * Date: 25 November 2002 |
| * SUMMARY: Testing scope |
| * See http://bugzilla.mozilla.org/show_bug.cgi?id=181834 |
| * |
| * This bug only bit in Rhino interpreted mode, when the |
| * 'compile functions with dynamic scope' feature was set. |
| * |
| */ |
| //----------------------------------------------------------------------------- |
| var UBound = 0; |
| var BUGNUMBER = 181834; |
| var summary = 'Testing scope'; |
| var status = ''; |
| var statusitems = []; |
| var actual = ''; |
| var actualvalues = []; |
| var expect= ''; |
| var expectedvalues = []; |
| |
| |
| /* |
| * If N<=0, |outer_d| just gets incremented once, |
| * so the return value should be 1 in this case. |
| * |
| * If N>0, we end up calling inner() N+1 times: |
| * inner(N), inner(N-1), ... , inner(0). |
| * |
| * Each call to inner() increments |outer_d| by 1. |
| * The last call, inner(0), returns the final value |
| * of |outer_d|, which should be N+1. |
| */ |
| function outer(N) |
| { |
| var outer_d = 0; |
| return inner(N); |
| |
| function inner(level) |
| { |
| outer_d++; |
| |
| if (level > 0) |
| return inner(level - 1); |
| else |
| return outer_d; |
| } |
| } |
| |
| |
| /* |
| * This only has meaning in Rhino - |
| */ |
| setDynamicScope(true); |
| |
| /* |
| * Recompile the function |outer| via eval() in order to |
| * feel the effect of the dynamic scope mode we have set. |
| */ |
| var s = outer.toString(); |
| eval(s); |
| |
| status = inSection(1); |
| actual = outer(-5); |
| expect = 1; |
| addThis(); |
| |
| status = inSection(2); |
| actual = outer(0); |
| expect = 1; |
| addThis(); |
| |
| status = inSection(3); |
| actual = outer(5); |
| expect = 6; |
| addThis(); |
| |
| |
| /* |
| * Sanity check: do same steps with the dynamic flag off |
| */ |
| setDynamicScope(false); |
| |
| /* |
| * Recompile the function |outer| via eval() in order to |
| * feel the effect of the dynamic scope mode we have set. |
| */ |
| eval(s); |
| |
| status = inSection(4); |
| actual = outer(-5); |
| expect = 1; |
| addThis(); |
| |
| status = inSection(5); |
| actual = outer(0); |
| expect = 1; |
| addThis(); |
| |
| status = inSection(6); |
| actual = outer(5); |
| expect = 6; |
| addThis(); |
| |
| |
| |
| //----------------------------------------------------------------------------- |
| test(); |
| //----------------------------------------------------------------------------- |
| |
| |
| |
| function setDynamicScope(flag) |
| { |
| if (this.Packages) |
| { |
| var cx = this.Packages.org.mozilla.javascript.Context.getCurrentContext(); |
| cx.setCompileFunctionsWithDynamicScope(flag); |
| } |
| } |
| |
| |
| function addThis() |
| { |
| statusitems[UBound] = status; |
| actualvalues[UBound] = actual; |
| expectedvalues[UBound] = expect; |
| UBound++; |
| } |
| |
| |
| function test() |
| { |
| enterFunc('test'); |
| printBugNumber(BUGNUMBER); |
| printStatus(summary); |
| |
| for (var i=0; i<UBound; i++) |
| { |
| reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]); |
| } |
| |
| exitFunc ('test'); |
| } |