0c7af39737
surrounding context to figure out if the variable could be global. If the variable could be global we check context extension objects at runtime and use a global LoadIC if no variables have been introduced by eval. Fix crash bug when loading function arguments from inside eval. The shadowed variable in the DYNAMIC_LOCAL case does not rewrite to a slot in that case. Review URL: http://codereview.chromium.org/28027 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1348 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
86 lines
2.9 KiB
JavaScript
86 lines
2.9 KiB
JavaScript
// Copyright 2009 the V8 project authors. All rights reserved.
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are
|
|
// met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright
|
|
// notice, this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above
|
|
// copyright notice, this list of conditions and the following
|
|
// disclaimer in the documentation and/or other materials provided
|
|
// with the distribution.
|
|
// * Neither the name of Google Inc. nor the names of its
|
|
// contributors may be used to endorse or promote products derived
|
|
// from this software without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
// Tests global loads from eval.
|
|
|
|
var x = 27;
|
|
|
|
function test() {
|
|
function g() {
|
|
assertEquals(27, eval('x'));
|
|
function h() {
|
|
// Shadow with local variable.
|
|
var x = 22;
|
|
assertEquals(22, eval('x'));
|
|
function i(x) {
|
|
// Shadow with parameter.
|
|
assertEquals(44, eval('x'));
|
|
function j() {
|
|
assertEquals(x, eval('x'));
|
|
// Shadow with function name.
|
|
function x() {
|
|
assertEquals(x, eval('x'));
|
|
}
|
|
x();
|
|
}
|
|
j();
|
|
}
|
|
i(44);
|
|
}
|
|
h();
|
|
}
|
|
g();
|
|
}
|
|
|
|
test();
|
|
|
|
// Test loading of globals from deeply nested eval. This code is a
|
|
// bit complicated, but the complication is needed to check that the
|
|
// code that loads the global variable accounts for the fact that the
|
|
// global variable becomes shadowed by an eval-introduced variable.
|
|
var result = 0;
|
|
function testDeep(source, load, test) {
|
|
eval(source);
|
|
function f() {
|
|
var y = 23;
|
|
function g() {
|
|
var z = 25;
|
|
function h() {
|
|
eval(load);
|
|
eval(test);
|
|
}
|
|
h();
|
|
}
|
|
g();
|
|
}
|
|
f();
|
|
}
|
|
testDeep('1', 'result = x', 'assertEquals(27, result)');
|
|
// Because of the eval-cache, the 'result = x' code gets reused. This
|
|
// time in a context where the 'x' variable has been shadowed.
|
|
testDeep('var x = 1', 'result = x', 'assertEquals(1, result)');
|