ce409375b3
Changes SharedFunctionInfo to store a function_token_offset, relative to the start_position, instead of the full function_token_position. This enables us to reduce both FunctionTokenPosition and ExpectedNofProperties to 16 bits each, saving 32 bits per SFI. BUG=chromium:818642,chromium:783853 TBR=yangguo@chromium.org Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng Change-Id: I45aefcec605c1da502053c23c73564ceaed6c9b5 Reviewed-on: https://chromium-review.googlesource.com/1122982 Commit-Queue: Ross McIlroy <rmcilroy@chromium.org> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org> Reviewed-by: Yang Guo <yangguo@chromium.org> Reviewed-by: Ulan Degenbaev <ulan@chromium.org> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org> Cr-Commit-Position: refs/heads/master@{#54220}
171 lines
7.7 KiB
JavaScript
171 lines
7.7 KiB
JavaScript
// Copyright 2016 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-function-tostring
|
|
|
|
var prefix = "/*before*/";
|
|
var suffix = "/*after*/";
|
|
|
|
function checkStringRepresentation(f, source) {
|
|
assertEquals(typeof f, "function");
|
|
assertEquals(source, f.toString());
|
|
}
|
|
|
|
function testDeclaration(source) {
|
|
// this eval should define a local variable f that is a function
|
|
eval(prefix + source + suffix);
|
|
checkStringRepresentation(f, source);
|
|
}
|
|
testDeclaration( "function f(){}");
|
|
testDeclaration( "function*f(){}");
|
|
testDeclaration("async function f(){}");
|
|
testDeclaration( "function/*A*/ f/*B*/(/*C*/a/*D*/,/*E*/b/*G*/)/*H*/{/*I*/}");
|
|
testDeclaration( "function/*A*/*f/*B*/(/*C*/a/*D*/,/*E*/b/*G*/)/*H*/{/*I*/}");
|
|
testDeclaration("async/*Z*/function/*A*/ f/*B*/(/*C*/a/*D*/,/*E*/b/*G*/)/*H*/{/*I*/}");
|
|
testDeclaration( "function \t f \n ( \r a \r\n,\n\r b ) {'\u2654'}");
|
|
testDeclaration( "function \t *f \n ( \r a \r\n,\n\r b ) { }");
|
|
testDeclaration( "function *\t f \n ( \r a \r\n,\n\r b ) { }");
|
|
testDeclaration("async \t function f \n ( \r a \r\n,\n\r b ) { }");
|
|
|
|
function testExpression(source) {
|
|
// this eval should return a function
|
|
var f = eval("(" + prefix + source + suffix + ")");
|
|
checkStringRepresentation(f, source);
|
|
}
|
|
testExpression( "function (){}");
|
|
testExpression( "function f(){}");
|
|
testExpression( "function* (){}");
|
|
testExpression( "function*f(){}");
|
|
testExpression("async function (){}");
|
|
testExpression("async function f(){}");
|
|
testExpression( "function/*A*/ /*B*/(/*C*/a/*D*/,/*E*/b/*G*/)/*H*/{/*I*/}");
|
|
testExpression( "function/*A*/ f/*B*/(/*C*/a/*D*/,/*E*/b/*G*/)/*H*/{/*I*/}");
|
|
testExpression( "function/*A*/* /*B*/(/*C*/a/*D*/,/*E*/b/*G*/)/*H*/{/*I*/}");
|
|
testExpression( "function/*A*/*f/*B*/(/*C*/a/*D*/,/*E*/b/*G*/)/*H*/{/*I*/}");
|
|
testExpression("async/*Z*/function/*A*/ f/*B*/(/*C*/a/*D*/,/*E*/b/*G*/)/*H*/{/*I*/}");
|
|
testExpression( "function \t \n ( \r a \r\n,\n\r b ) { }");
|
|
testExpression( "function \t f \n ( \r a \r\n,\n\r b ) { }");
|
|
testExpression( "function \t * \n ( \r a \r\n,\n\r b ) { }");
|
|
testExpression( "function \t *f \n ( \r a \r\n,\n\r b ) { }");
|
|
testExpression( "function *\t \n ( \r a \r\n,\n\r b ) { }");
|
|
testExpression( "function *\t f \n ( \r a \r\n,\n\r b ) { }");
|
|
testExpression("async \t function \n ( \r a \r\n,\n\r b ) { }");
|
|
|
|
testExpression( "(/*A*/ /*B*/ /*C*/ /*D*/ /*E*/ /*F*/)/*G*/=>/*H*/0");
|
|
testExpression( "a/*B*/ /*C*/ /*D*/ /*E*/ /*F*/ /*G*/=>/*H*/{}");
|
|
testExpression( "(/*A*/a/*B*/ /*C*/ /*D*/ /*E*/ /*F*/)/*G*/=>/*H*/0");
|
|
testExpression( "(/*A*/a/*B*/,/*C*/b/*D*/,/*E*/c/*F*/)/*G*/=>/*H*/{}");
|
|
testExpression("async (/*A*/ /*B*/ /*C*/ /*D*/ /*E*/ /*F*/)/*G*/=>/*H*/0");
|
|
testExpression("async a/*B*/ /*C*/ /*D*/ /*E*/ /*F*/ /*G*/=>/*H*/{}");
|
|
testExpression("async (/*A*/a/*B*/ /*C*/ /*D*/ /*E*/ /*F*/)/*G*/=>/*H*/0");
|
|
testExpression("async (/*A*/a/*B*/,/*C*/b/*D*/,/*E*/c/*F*/)/*G*/=>/*H*/{}");
|
|
|
|
function testSimpleMethod(source) {
|
|
// the source should define a method f
|
|
|
|
// object method
|
|
var f = eval("({" + prefix + source + suffix + "}.f)");
|
|
checkStringRepresentation(f, source);
|
|
|
|
// nonstatic class method
|
|
var f = eval("new class{" + prefix + source + suffix + "}().f");
|
|
checkStringRepresentation(f, source);
|
|
|
|
// static class method
|
|
var f = eval("(class{static" + prefix + source + suffix + "}).f");
|
|
checkStringRepresentation(f, source);
|
|
}
|
|
testSimpleMethod("f(){}");
|
|
testSimpleMethod("*f(){}");
|
|
testSimpleMethod("async f(){}");
|
|
testSimpleMethod("f \t (){}");
|
|
testSimpleMethod("* \tf(){}");
|
|
testSimpleMethod("async \t f (){}");
|
|
|
|
function testAccessorMethod(source, getOrSet) {
|
|
// the source should define a getter or setter method
|
|
|
|
// object method
|
|
var f = Object.getOwnPropertyDescriptor(eval("({" + prefix + source + suffix + "})"), "f")[getOrSet];
|
|
checkStringRepresentation(f, source);
|
|
|
|
// nonstatic class method
|
|
var f = Object.getOwnPropertyDescriptor(eval("(class{" + prefix + source + suffix + "})").prototype, "f")[getOrSet];
|
|
|
|
// static class method
|
|
var f = Object.getOwnPropertyDescriptor(eval("(class{static" + prefix + source + suffix + "})"), "f")[getOrSet];
|
|
checkStringRepresentation(f, source);
|
|
}
|
|
|
|
testAccessorMethod("get f( ){}", "get");
|
|
testAccessorMethod("set f(a){}", "set");
|
|
testAccessorMethod("get/*A*/f/*B*/(/*C*/ /*D*/)/*E*/{/*F*/}", "get");
|
|
testAccessorMethod("set/*A*/f/*B*/(/*C*/a/*D*/)/*E*/{/*F*/}", "set");
|
|
|
|
const GeneratorFunction = function*(){}.constructor;
|
|
const AsyncFunction = async function(){}.constructor;
|
|
function testDynamicFunction(...args) {
|
|
var P = args.slice(0, args.length - 1).join(",");
|
|
var bodyText = args.length > 0 ? args[args.length - 1] : "";
|
|
var source = " anonymous(" + P + "\n) {\n" + bodyText + "\n}";
|
|
checkStringRepresentation( Function(...args), "function" + source);
|
|
checkStringRepresentation(GeneratorFunction(...args), "function*" + source);
|
|
checkStringRepresentation( AsyncFunction(...args), "async function" + source);
|
|
}
|
|
testDynamicFunction();
|
|
testDynamicFunction(";");
|
|
testDynamicFunction("return");
|
|
testDynamicFunction("a", "return a");
|
|
testDynamicFunction("a", "b", "return a");
|
|
testDynamicFunction("a, b", "return a");
|
|
testDynamicFunction("a,/*A*/b", "return a");
|
|
testDynamicFunction("/*A*/a,b", "return a");
|
|
testDynamicFunction("a,b", "return a/*A*/");
|
|
|
|
// Proxies of functions should not throw, but return a NativeFunction.
|
|
assertEquals("function () { [native code] }",
|
|
new Proxy(function () { hidden }, {}).toString());
|
|
assertEquals("function () { [native code] }",
|
|
new Proxy(() => { hidden }, {}).toString());
|
|
assertEquals("function () { [native code] }",
|
|
new Proxy(class {}, {}).toString());
|
|
assertEquals("function () { [native code] }",
|
|
new Proxy(function() { hidden }.bind({}), {}).toString());
|
|
assertEquals("function () { [native code] }",
|
|
new Proxy(function*() { hidden }, {}).toString());
|
|
assertEquals("function () { [native code] }",
|
|
new Proxy(async function() { hidden }, {}).toString());
|
|
assertEquals("function () { [native code] }",
|
|
new Proxy(async function*() { hidden }, {}).toString());
|
|
assertEquals("function () { [native code] }",
|
|
new Proxy({ method() { hidden } }.method, {}).toString());
|
|
|
|
// Assert that we return a NativeFunction for script that has too large an
|
|
// offset between function token position and start position for us to return
|
|
// an exact representation of the source code.
|
|
function testLongFunctionTokenOffset(functionType) {
|
|
var expected = "function f() { [native code] }";
|
|
// Spec requires that we return something that will cause eval to throws if we
|
|
// can't reproduce the function's source code.
|
|
assertThrows(() => eval(expected), SyntaxError);
|
|
|
|
var functionSource = functionType + " ".repeat(65535) + " f(){}";
|
|
|
|
// Function declaration
|
|
eval(functionSource);
|
|
assertEquals(expected, f.toString());
|
|
|
|
// Function expression
|
|
var f = eval("(" + functionSource + ")");
|
|
assertEquals(expected, f.toString());
|
|
}
|
|
testLongFunctionTokenOffset("function");
|
|
testLongFunctionTokenOffset("function*");
|
|
testLongFunctionTokenOffset("async function");
|
|
testLongFunctionTokenOffset("async function*");
|
|
|
|
// Non-callable proxies still throw.
|
|
assertThrows(() => Function.prototype.toString.call(new Proxy({}, {})),
|
|
TypeError);
|