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// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --harmony-proxies --allow-natives-syntax --expose-debug-as debug
"use strict";
// Test non-JSObject receiver.
function f(o) {
var result = [];
for (var i in o) {
result.push(i);
}
return result;
}
assertEquals(["0"], f("a"));
assertEquals(["0"], f("a"));
%OptimizeFunctionOnNextCall(f);
assertEquals(["0","1","2"], f("bla"));
// Test the lazy deopt points.
var keys = ["a", "b", "c", "d"];
var has_keys = [];
var deopt_has = false;
var deopt_enum = false;
var handler = {
enumerate(target) {
if (deopt_enum) {
%DeoptimizeFunction(f2);
deopt_enum = false;
}
return keys[Symbol.iterator]();
},
has(target, k) {
if (deopt_has) {
%DeoptimizeFunction(f2);
deopt_has = false;
}
has_keys.push(k);
return {value: 10, configurable: true, writable: false, enumerable: true};
}
};
var proxy = new Proxy({}, handler);
var o = {__proto__: proxy};
function f2(o) {
var result = [];
for (var i in o) {
result.push(i);
}
return result;
}
function check_f2() {
assertEquals(keys, f2(o));
assertEquals(keys, has_keys);
has_keys.length = 0;
}
check_f2();
check_f2();
// Test lazy deopt after GetPropertyNamesFast
%OptimizeFunctionOnNextCall(f2);
deopt_enum = true;
check_f2();
// Test lazy deopt after FILTER_KEY
%OptimizeFunctionOnNextCall(f2);
deopt_has = true;
check_f2();
function f3(o) {
for (var i in o) {
}
}
f3({__proto__:{x:1}});
f3({__proto__:{x:1}});
%OptimizeFunctionOnNextCall(f3);
f3(undefined);
f3(null);
// Reliable repro for an issue previously flushed out by GC stress.
var handler2 = {
getPropertyDescriptor(target, k) {
has_keys.push(k);
return {value: 10, configurable: true, writable: false, enumerable: true};
}
}
var proxy2 = new Proxy({}, handler2);
var o2 = {__proto__: proxy2};
var p = {x: "x"}
function f4(o, p) {
var result = [];
for (var i in o) {
var j = p.x + "str";
result.push(i);
}
return result;
}
function check_f4() {
assertEquals(keys, f4(o, p));
assertEquals(keys, has_keys);
has_keys.length = 0;
}
check_f4();
check_f4();
%OptimizeFunctionOnNextCall(f4);
p.y = "y"; // Change map, cause eager deopt.
check_f4();
// Repro for Turbofan equivalent.
var x;
var count = 0;
var Debug = debug.Debug;
function listener(event, exec_state, event_data, data) {
if (event == Debug.DebugEvent.Break) {
%DeoptimizeFunction(f5);
}
}
var handler3 = {
enumerate(target) {
return ["a", "b"][Symbol.iterator]();
},
has(target, k) {
if (k == "a") count++;
if (x) %ScheduleBreak();
return {value: 10, configurable: true, writable: false, enumerable: true};
}
};
var proxy3 = new Proxy({}, handler3);
var o3 = {__proto__: proxy3};
function f5() {
for (var p in o3) {
print(p);
}
}
x = false;
f5(); f5(); f5();
%OptimizeFunctionOnNextCall(f5);
x = true;
count = 0;
Debug.setListener(listener);
f5();
Debug.setListener(null);
assertEquals(1, count);
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