The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/jsapi-tests/testRegExpInstanceProperties.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,73 @@
     1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
     1.5 + * vim: set ts=8 sts=4 et sw=4 tw=99:
     1.6 + */
     1.7 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.8 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.9 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
    1.10 +
    1.11 +#include "jscompartment.h"
    1.12 +#include "jsgc.h"
    1.13 +
    1.14 +#include "jsapi-tests/tests.h"
    1.15 +#include "vm/Shape.h"
    1.16 +
    1.17 +BEGIN_TEST(testRegExpInstanceProperties)
    1.18 +{
    1.19 +    jsval regexpProtoVal;
    1.20 +    EVAL("RegExp.prototype", &regexpProtoVal);
    1.21 +
    1.22 +    JSObject *regexpProto = JSVAL_TO_OBJECT(regexpProtoVal);
    1.23 +
    1.24 +    if (!helper(regexpProto))
    1.25 +        return false;
    1.26 +
    1.27 +    JS_GC(cx);
    1.28 +
    1.29 +    CHECK_EQUAL(regexpProto->compartment()->initialRegExpShape, nullptr);
    1.30 +
    1.31 +    jsval regexp;
    1.32 +    EVAL("/foopy/", &regexp);
    1.33 +    JSObject *robj = JSVAL_TO_OBJECT(regexp);
    1.34 +
    1.35 +    CHECK(robj->lastProperty());
    1.36 +    CHECK_EQUAL(robj->compartment()->initialRegExpShape, robj->lastProperty());
    1.37 +
    1.38 +    return true;
    1.39 +}
    1.40 +
    1.41 +/*
    1.42 + * Do this all in a nested function evaluation so as (hopefully) not to get
    1.43 + * screwed up by the conservative stack scanner when GCing.
    1.44 + */
    1.45 +MOZ_NEVER_INLINE bool helper(JSObject *regexpProto)
    1.46 +{
    1.47 +    CHECK(!regexpProto->inDictionaryMode());
    1.48 +
    1.49 +    // Verify the compartment's cached shape is being used by RegExp.prototype.
    1.50 +    const js::Shape *shape = regexpProto->lastProperty();
    1.51 +    js::AutoShapeRooter root(cx, shape);
    1.52 +    for (js::Shape::Range r = shape;
    1.53 +         &r.front() != regexpProto->compartment()->initialRegExpShape;
    1.54 +         r.popFront())
    1.55 +    {
    1.56 +         CHECK(!r.empty());
    1.57 +    }
    1.58 +
    1.59 +    JS::RootedValue v(cx, INT_TO_JSVAL(17));
    1.60 +    CHECK(JS_SetProperty(cx, regexpProto, "foopy", v));
    1.61 +    v = INT_TO_JSVAL(42);
    1.62 +    CHECK(JS_SetProperty(cx, regexpProto, "bunky", v));
    1.63 +    CHECK(JS_DeleteProperty(cx, regexpProto, "foopy"));
    1.64 +    CHECK(regexpProto->inDictionaryMode());
    1.65 +
    1.66 +    const js::Shape *shape2 = regexpProto->lastProperty();
    1.67 +    js::AutoShapeRooter root2(cx, shape2);
    1.68 +    js::Shape::Range r2 = shape2;
    1.69 +    while (!r2.empty()) {
    1.70 +        CHECK(&r2.front() != regexpProto->compartment()->initialRegExpShape);
    1.71 +        r2.popFront();
    1.72 +    }
    1.73 +
    1.74 +    return true;
    1.75 +}
    1.76 +END_TEST(testRegExpInstanceProperties)