2d889aa9a4
https://github.com/tc39/ecma262/pull/988 gained concensus during the september 2017 TC39 meetings. This moves the load of the "next" method to the very beginning of the iteration protocol, rather than during each iteration step. This impacts: - yield* - for-of loops - spread arguments - array spreads In the v8 implementation, this also affects async iteration versions of these things (the sole exception being the Async-From-Sync iterator, which requires a few more changes to work with this, likely done in a followup patch). This change introduces a new AST node, ResolvedProperty, which can be used as a callee by Call nodes to produce the same bytecode as Property calls, without observably re-loading the property. This is used in several AST-desugarings involving the iteration protocol. BUG=v8:6861, v8:5699 R=rmcilroy@chromium.org TBR=neis@chromium.org, adamk@chromium.org Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng Change-Id: I9685db6e85315ba8a2df87a4537c2bf491e1e35b Reviewed-on: https://chromium-review.googlesource.com/857593 Commit-Queue: Caitlin Potter <caitp@igalia.com> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org> Cr-Commit-Position: refs/heads/master@{#50518}
272 lines
4.8 KiB
Plaintext
272 lines
4.8 KiB
Plaintext
Checks Debugger.getPossibleBreakpoints
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// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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function testEval() {
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|C|eval('// comment only');
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|C|eval('// comment only\n');
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|R|}
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// function without return
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function procedure() {
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var a = |_|1;
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var b = |_|2;
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|R|}
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function testProcedure() {
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|C|procedure();
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|R|}
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function returnTrue() {
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|_|return true;|R|
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}
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function testIf() {
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var a;
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if (true) |_|a = true;
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|_|if (!a) {
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|_|a = true;
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} else {
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|_|a = false;
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}
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|_|if (|C|returnTrue()) {
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|_|a = false;
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} else {
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|_|a = true;
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}
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|R|}
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function emptyFunction() {|R|}
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function testEmptyFunction() {
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|C|emptyFunction();
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|R|}
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function twoArguments(a1, a2) {
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|R|}
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function testCallArguments() {
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|C|twoArguments(|C|emptyFunction(), |C|emptyFunction());
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|R|}
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function testNested() {
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function nested1() {
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function nested2() {
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function nested3() {
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|R|}
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|C|nested3();
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|_|return;|R|
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}
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return |C|nested2();|R|
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}
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|C|nested1();
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|R|}
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function return42() {
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|_|return 42;|R|
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}
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function returnCall() {
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|_|return |C|return42();|R|
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}
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function testCallAtReturn() {
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|_|return |C|returnCall();|R|
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}
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function returnObject() {
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|_|return ({ foo: () => |_|42|R| });|R|
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}
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function testWith() {
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|_|with (|C|returnObject()) {
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|C|foo();
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}
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|_|with({}) {
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|_|return;|R|
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}
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}
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function testForLoop() {
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for (var i = |_|0; i |_|< 1; ++|_|i) {}
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for (var i = |_|0; i |_|< 1; ++|_|i) i;
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for (var i = |_|0; i |_|< 0; ++|_|i) {}
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|R|}
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function testForOfLoop() {
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for (var |C|k of |_|[]) {}
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for (var |C|k of |_|[1]) |_|k;
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var a = |_|[];
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for (var |C|k of |_|a) {}
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|R|}
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function testForInLoop() {
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var o = |_|{};
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for (var |_|k in |_|o) {}
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for (var |_|k in |_|o) |_|k;
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for (var |_|k in |_|{ a:1 }) {}
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for (var |_|k in |_|{ a:1 }) |_|k;
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|R|}
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function testSimpleExpressions() {
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1 + 2 + 3;
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var a = |_|1;
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|_|++a;
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|_|a--;
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|R|}
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|_|Object.|C|defineProperty(this, 'getterFoo', {
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get: () => |_|return42|R|
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});
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function testGetter() {
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|C|getterFoo();
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|R|}
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var obj = |_|{
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foo: () => (|_|{
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boo: () => |_|return42|R|
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})|R|
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};
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function testChainedCalls() {
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|_|obj.|C|foo().|C|boo()|C|();
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|R|}
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function testChainedWithNative() {
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|_|Array.|C|from([1]).|C|concat([2]).|C|map(v => v |_|* 2|R|);
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|R|}
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function testPromiseThen() {
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|_|return Promise.|C|resolve().|C|then(v => v |_|* 2|R|).|C|then(v => v |_|* 2|R|);|R|
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}
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function testSwitch() {
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for (var i = |_|0; i |_|< 3; ++|_|i) {
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|_|switch(i) {
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case 0: |_|continue;
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case 1: |C|return42(); |_|break;
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default: |_|return;|R|
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}
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}
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|R|}
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function* idMaker() {
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|_|yield 1;
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|_|yield 2;
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|_|yield 3;
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|R|}
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function testGenerator() {
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var gen = |C|idMaker();
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|C|return42();
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gen.|C|next().value;
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|D|debugger;
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gen.|C|next().value;
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|C|return42();
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gen.|C|next().value;
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|C|return42();
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gen.|C|next().value;
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|R|}
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function throwException() {
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|_|throw |C|new Error();
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}
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function testCaughtException() {
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try {
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|C|throwException()
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} catch (e) {
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|_|return;|R|
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}
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|R|}
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function testClasses() {
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class Cat {
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constructor(name) {
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|_|this.name = name;
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|R|}
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speak() {
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|R|}
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}
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class Lion extends Cat {
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constructor(name) {
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|C|super(name);
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|R|}
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speak() {
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|_|super.|C|speak();
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|R|}
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}
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|C|new Lion().|C|speak();
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|R|}
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async function asyncFoo() {
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|_|await Promise.|C|resolve().|C|then(v => v |_|* 2|R|);
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|C|return42();
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|_|await |C|asyncBoo();
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|R|}
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async function asyncBoo() {
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|_|await Promise.|C|resolve();
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|R|}
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async function testAsyncAwait() {
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|_|await |C|asyncFoo();
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|_|await |C|awaitBoo();
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|R|}
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// TODO(kozyatinskiy): fix this.
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async function testPromiseAsyncWithCode() {
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var nextTest;
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var testPromise = |C|new Promise(resolve => nextTest |_|= resolve|R|);
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async function main() {
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async function foo() {
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var resolveNested;
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var p = |C|new Promise(resolve => resolveNested |_|= resolve|R|);
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|C|setTimeout(resolveNested, 0);
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|_|await p;
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|R|}
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|C|setTimeout(returnCall, 0);
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await |C|foo();
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await |C|foo();
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|C|nextTest();
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|R|}
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|C|main();
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|_|return testPromise;
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|R|}
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function returnFunction() {
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|_|return returnObject;|R|
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}
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async function testPromiseComplex() {
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var nextTest;
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var testPromise = |C|new Promise(resolve => nextTest |_|= resolve|R|);
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async function main() {
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async function foo() {
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|_|await Promise.|C|resolve();
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|_|return 42;
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|R|}
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var x = |_|1;
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var y = |_|2;
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|C|returnFunction(|C|emptyFunction(), x++, --y, x => 2 |_|* x|R|, |C|returnCall())|C|().a = await |C|foo((a => 2 |_|*a|R|)|C|(5));
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|C|nextTest();
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|R|}
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|C|main();
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|_|return testPromise;
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|R|}
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function twiceDefined() {
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|_|return a + b;|R|
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}
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function twiceDefined() {
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|_|return a + b;|R|
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}
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