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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*jshint bitwise: true, camelcase: false, curly: false, eqeqeq: true,
es5: true, forin: true, immed: true, indent: 4, latedef: false,
newcap: false, noarg: true, noempty: true, nonew: true,
plusplus: false, quotmark: false, regexp: true, undef: true,
unused: false, strict: false, trailing: true,
*/
/*global ToObject: false, ToInteger: false, IsCallable: false,
ThrowRangeError: false, ThrowTypeError: false,
AssertionFailed: false,
MakeConstructible: false, DecompileArg: false,
RuntimeDefaultLocale: false,
NewDenseArray: false,
Dump: false,
callFunction: false,
TO_UINT32: false,
JSMSG_NOT_FUNCTION: false, JSMSG_MISSING_FUN_ARG: false,
JSMSG_EMPTY_ARRAY_REDUCE: false, JSMSG_CANT_CONVERT_TO: false,
*/
#include "SelfHostingDefines.h"
// Assertions and debug printing, defined here instead of in the header above
// to make `assert` invisible to C++.
#ifdef DEBUG
#define assert(b, info) if (!(b)) AssertionFailed(__FILE__ + ":" + __LINE__ + ": " + info)
#define dbg(msg) DumpMessage(callFunction(std_Array_pop, \
StringSplitString(__FILE__, '/')) \
+ '#' + __LINE__ + ': ' + msg)
#else
#define assert(b, info) // Elided assertion.
#define dbg(msg) // Elided debugging output.
#endif
// All C++-implemented standard builtins library functions used in self-hosted
// code are installed via the std_functions JSFunctionSpec[] in
// SelfHosting.cpp.
//
// Do not create an alias to a self-hosted builtin, otherwise it will be cloned
// twice.
//
// WeakMap is a bare constructor without properties or methods.
var std_WeakMap = WeakMap;
// StopIteration is a bare constructor without properties or methods.
var std_StopIteration = StopIteration;
/********** List specification type **********/
/* Spec: ECMAScript Language Specification, 5.1 edition, 8.8 */
function List() {
this.length = 0;
}
MakeConstructible(List, {__proto__: null});
/********** Record specification type **********/
/* Spec: ECMAScript Internationalization API Specification, draft, 5 */
function Record() {
return std_Object_create(null);
}
MakeConstructible(Record, {});
/********** Abstract operations defined in ECMAScript Language Specification **********/
/* Spec: ECMAScript Language Specification, 5.1 edition, 8.12.6 and 11.8.7 */
function HasProperty(o, p) {
return p in o;
}
/* Spec: ECMAScript Language Specification, 5.1 edition, 9.2 and 11.4.9 */
function ToBoolean(v) {
return !!v;
}
/* Spec: ECMAScript Language Specification, 5.1 edition, 9.3 and 11.4.6 */
function ToNumber(v) {
return +v;
}
// ES6 7.2.1 (previously, ES5 9.10 under the name "CheckObjectCoercible").
function RequireObjectCoercible(v) {
if (v === undefined || v === null)
ThrowTypeError(JSMSG_CANT_CONVERT_TO, ToString(v), "object");
}
/* Spec: ECMAScript Draft, 6 edition May 22, 2014, 7.1.15 */
function ToLength(v) {
v = ToInteger(v);
if (v <= 0)
return 0;
// Math.pow(2, 53) - 1 = 0x1fffffffffffff
return std_Math_min(v, 0x1fffffffffffff);
}
/* Spec: ECMAScript Draft, 6th edition Oct 14, 2014, 7.2.4 */
function SameValueZero(x, y) {
return x === y || (x !== x && y !== y);
}
// ES 2017 draft (April 6, 2016) 7.3.9
function GetMethod(V, P) {
// Step 1.
assert(IsPropertyKey(P), "Invalid property key");
// Step 2.
var func = V[P];
// Step 3.
if (func === undefined || func === null)
return undefined;
// Step 4.
if (!IsCallable(func))
ThrowTypeError(JSMSG_NOT_FUNCTION, typeof func);
// Step 5.
return func;
}
/* Spec: ECMAScript Draft, 6th edition Dec 24, 2014, 7.2.7 */
function IsPropertyKey(argument) {
var type = typeof argument;
return type === "string" || type === "symbol";
}
/* Spec: ECMAScript Draft, 6th edition Dec 24, 2014, 7.4.1 */
function GetIterator(obj, method) {
// Steps 1-2.
if (arguments.length === 1)
method = GetMethod(obj, std_iterator);
// Steps 3-4.
var iterator = callContentFunction(method, obj);
// Step 5.
if (!IsObject(iterator))
ThrowTypeError(JSMSG_NOT_ITERATOR, ToString(iterator));
// Step 6.
return iterator;
}
var _builtinCtorsCache = {__proto__: null};
function GetBuiltinConstructor(builtinName) {
var ctor = _builtinCtorsCache[builtinName] ||
(_builtinCtorsCache[builtinName] = GetBuiltinConstructorImpl(builtinName));
assert(ctor, `No builtin with name "${builtinName}" found`);
return ctor;
}
function GetBuiltinPrototype(builtinName) {
return (_builtinCtorsCache[builtinName] || GetBuiltinConstructor(builtinName)).prototype;
}
// ES 2016 draft Mar 25, 2016 7.3.20.
function SpeciesConstructor(obj, defaultConstructor) {
// Step 1.
assert(IsObject(obj), "not passed an object");
// Step 2.
var ctor = obj.constructor;
// Step 3.
if (ctor === undefined)
return defaultConstructor;
// Step 4.
if (!IsObject(ctor))
ThrowTypeError(JSMSG_NOT_NONNULL_OBJECT, "object's 'constructor' property");
// Steps 5.
var s = ctor[std_species];
// Step 6.
if (s === undefined || s === null)
return defaultConstructor;
// Step 7.
if (IsConstructor(s))
return s;
// Step 8.
ThrowTypeError(JSMSG_NOT_CONSTRUCTOR, "@@species property of object's constructor");
}
function GetTypeError(msg) {
try {
FUN_APPLY(ThrowTypeError, undefined, arguments);
} catch (e) {
return e;
}
assert(false, "the catch block should've returned from this function.");
}
function GetInternalError(msg) {
try {
FUN_APPLY(ThrowInternalError, undefined, arguments);
} catch (e) {
return e;
}
assert(false, "the catch block should've returned from this function.");
}
// To be used when a function is required but calling it shouldn't do anything.
function NullFunction() {}
/*************************************** Testing functions ***************************************/
function outer() {
return function inner() {
return "foo";
}
}
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