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:  *
michael@0:  * Date:    25 November 2002
michael@0:  * SUMMARY: Testing scope
michael@0:  * See http://bugzilla.mozilla.org/show_bug.cgi?id=181834
michael@0:  *
michael@0:  * This bug only bit in Rhino interpreted mode, when the
michael@0:  * 'compile functions with dynamic scope' feature was set.
michael@0:  *
michael@0:  */
michael@0: //-----------------------------------------------------------------------------
michael@0: var UBound = 0;
michael@0: var BUGNUMBER = 181834;
michael@0: var summary = 'Testing scope';
michael@0: var status = '';
michael@0: var statusitems = [];
michael@0: var actual = '';
michael@0: var actualvalues = [];
michael@0: var expect= '';
michael@0: var expectedvalues = [];
michael@0: 
michael@0: 
michael@0: /*
michael@0:  * If N<=0, |outer_d| just gets incremented once,
michael@0:  * so the return value should be 1 in this case.
michael@0:  *
michael@0:  * If N>0, we end up calling inner() N+1 times:
michael@0:  * inner(N), inner(N-1), ... , inner(0).
michael@0:  *
michael@0:  * Each call to inner() increments |outer_d| by 1.
michael@0:  * The last call, inner(0), returns the final value
michael@0:  * of |outer_d|, which should be N+1.
michael@0:  */
michael@0: function outer(N)
michael@0: {
michael@0:   var outer_d = 0;
michael@0:   return inner(N);
michael@0: 
michael@0:   function inner(level)
michael@0:   {
michael@0:     outer_d++;
michael@0: 
michael@0:     if (level > 0)
michael@0:       return inner(level - 1);
michael@0:     else
michael@0:       return outer_d;
michael@0:   }
michael@0: }
michael@0: 
michael@0: 
michael@0: /*
michael@0:  * This only has meaning in Rhino -
michael@0:  */
michael@0: setDynamicScope(true);
michael@0: 
michael@0: /*
michael@0:  * Recompile the function |outer| via eval() in order to
michael@0:  * feel the effect of the dynamic scope mode we have set.
michael@0:  */
michael@0: var s = outer.toString();
michael@0: eval(s);
michael@0: 
michael@0: status = inSection(1);
michael@0: actual = outer(-5);
michael@0: expect = 1;
michael@0: addThis();
michael@0: 
michael@0: status = inSection(2);
michael@0: actual = outer(0);
michael@0: expect = 1;
michael@0: addThis();
michael@0: 
michael@0: status = inSection(3);
michael@0: actual = outer(5);
michael@0: expect = 6;
michael@0: addThis();
michael@0: 
michael@0: 
michael@0: /*
michael@0:  * Sanity check: do same steps with the dynamic flag off
michael@0:  */
michael@0: setDynamicScope(false);
michael@0: 
michael@0: /*
michael@0:  * Recompile the function |outer| via eval() in order to
michael@0:  * feel the effect of the dynamic scope mode we have set.
michael@0:  */
michael@0: eval(s);
michael@0: 
michael@0: status = inSection(4);
michael@0: actual = outer(-5);
michael@0: expect = 1;
michael@0: addThis();
michael@0: 
michael@0: status = inSection(5);
michael@0: actual = outer(0);
michael@0: expect = 1;
michael@0: addThis();
michael@0: 
michael@0: status = inSection(6);
michael@0: actual = outer(5);
michael@0: expect = 6;
michael@0: addThis();
michael@0: 
michael@0: 
michael@0: 
michael@0: //-----------------------------------------------------------------------------
michael@0: test();
michael@0: //-----------------------------------------------------------------------------
michael@0: 
michael@0: 
michael@0: 
michael@0: function setDynamicScope(flag)
michael@0: {
michael@0:   if (this.Packages)
michael@0:   {
michael@0:     var cx = this.Packages.org.mozilla.javascript.Context.getCurrentContext();
michael@0:     cx.setCompileFunctionsWithDynamicScope(flag);
michael@0:   }
michael@0: }
michael@0: 
michael@0: 
michael@0: function addThis()
michael@0: {
michael@0:   statusitems[UBound] = status;
michael@0:   actualvalues[UBound] = actual;
michael@0:   expectedvalues[UBound] = expect;
michael@0:   UBound++;
michael@0: }
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:   for (var i=0; i<UBound; i++)
michael@0:   {
michael@0:     reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
michael@0:   }
michael@0: 
michael@0:   exitFunc ('test');
michael@0: }