// Copyright 2011 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.
// Flags: --harmony-proxies
// Helper.
function TestWithProxies(test, x, y, z) {
test(function(h){ return new Proxy({}, h) }, x, y, z)
test(function(h) {
return new Proxy(function() {}, h)
}, x, y, z)
}
// Iterate over a proxy.
Array.prototype.values = function() { return this[Symbol.iterator]() }
function TestForIn(properties, handler) {
TestWithProxies(TestForIn2, properties, handler)
}
function TestForIn2(create, properties, handler) {
var p = create(handler)
var found = []
for (var x in p) found.push(x)
assertArrayEquals(properties, found)
}
TestForIn(["0", "a"], {
enumerate() { return ["0", "a"].values() },
has(target, property) { return true }
})
TestForIn(["null", "a"], {
enumerate() { return this.enumerate2() },
enumerate2() { return ["null", "a"].values() },
has(target, property) { return true }
})
TestForIn(["b", "a", "0", "c"], new Proxy({}, {
get: function(pr, pk) {
return function() { return ["b", "a", "0", "c"].values() }
}
}))
// Iterate over an object with a proxy prototype.
function TestForInDerived(properties, handler) {
TestWithProxies(TestForInDerived2, properties, handler)
}
function TestForInDerived2(create, properties, handler) {
var p = create(handler)
var o = Object.create(p)
o.z = 0
var found = []
for (var x in o) found.push(x)
assertArrayEquals(["z"].concat(properties), found)
var oo = Object.create(o)
oo.y = 0
var found = []
for (var x in oo) found.push(x)
assertArrayEquals(["y", "z"].concat(properties), found)
}
TestForInDerived(["0", "a"], {
enumerate: function() { return ["0", "a"].values() },
has: function(t, k) { return k == "0" || k == "a" }
})
TestForInDerived(["null", "a"], {
enumerate: function() { return this.enumerate2() },
enumerate2: function() { return ["null", "a"].values() },
has: function(t, k) { return k == "null" || k == "a" }
})
// Throw exception in enumerate trap.
function TestForInThrow(handler) {
TestWithProxies(TestForInThrow2, handler)
}
function TestForInThrow2(create, handler) {
var p = create(handler)
var o = Object.create(p)
assertThrowsEquals(function(){ for (var x in p) {} }, "myexn")
assertThrowsEquals(function(){ for (var x in o) {} }, "myexn")
}
TestForInThrow({
enumerate: function() { throw "myexn" }
})
TestForInThrow({
enumerate: function() { return this.enumerate2() },
enumerate2: function() { throw "myexn" }
})
TestForInThrow(new Proxy({}, {
get: function(pr, pk) {
return function() { throw "myexn" }
}
}));
(function() {
var p = new Proxy({}, {enumerate:function() { return ["0"].values(); }});
var o = [0];
o.__proto__ = p;
var keys = [];
for (var k in o) { keys.push(k); };
assertEquals(["0"], keys);
})();
(function () {
var p = new Proxy({}, {ownKeys: function() { return ["1", Symbol(), "2"] }});
assertEquals(["1","2"], Object.getOwnPropertyNames(p));
})();