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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* 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/. */
/* Class WritableStreamDefaultController. */
#include "builtin/streams/WritableStreamDefaultController.h"
#include "builtin/streams/ClassSpecMacro.h" // JS_STREAMS_CLASS_SPEC
#include "builtin/streams/WritableStream.h" // js::WritableStream
#include "builtin/streams/WritableStreamDefaultControllerOperations.h" // js::WritableStreamDefaultControllerError
#include "js/CallArgs.h" // JS::CallArgs{,FromVp}
#include "js/Class.h" // js::ClassSpec, JS_NULL_CLASS_OPS
#include "js/friend/ErrorMessages.h" // js::GetErrorMessage, JSMSG_*
#include "js/PropertySpec.h" // JS{Function,Property}Spec, JS_{FS,PS}_END
#include "js/Value.h" // JS::Value
#include "vm/Compartment-inl.h" // js::UnwrapAndTypeCheckThis
using JS::CallArgs;
using JS::CallArgsFromVp;
using JS::Rooted;
using JS::Value;
using js::ClassSpec;
using js::UnwrapAndTypeCheckThis;
using js::WritableStreamDefaultController;
using js::WritableStreamDefaultControllerError;
/*** 4.7. Class WritableStreamDefaultController *****************************/
/**
* Streams spec, 4.7.3.
* new WritableStreamDefaultController()
*/
bool WritableStreamDefaultController::constructor(JSContext* cx, unsigned argc,
Value* vp) {
// Step 1: Throw a TypeError.
JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr,
JSMSG_BOGUS_CONSTRUCTOR,
"WritableStreamDefaultController");
return false;
}
/**
* Streams spec, 4.7.4.1. error(e)
*/
static bool WritableStreamDefaultController_error(JSContext* cx, unsigned argc,
Value* vp) {
// Step 1: If ! IsWritableStreamDefaultController(this) is false, throw a
// TypeError exception.
CallArgs args = CallArgsFromVp(argc, vp);
Rooted<WritableStreamDefaultController*> unwrappedController(
cx, UnwrapAndTypeCheckThis<WritableStreamDefaultController>(cx, args,
"error"));
if (!unwrappedController) {
return false;
}
// Step 2: Let state be this.[[controlledWritableStream]].[[state]].
// Step 3: If state is not "writable", return.
if (unwrappedController->stream()->writable()) {
// Step 4: Perform ! WritableStreamDefaultControllerError(this, e).
if (!WritableStreamDefaultControllerError(cx, unwrappedController,
args.get(0))) {
return false;
}
}
args.rval().setUndefined();
return true;
}
static const JSPropertySpec WritableStreamDefaultController_properties[] = {
JS_PS_END};
static const JSFunctionSpec WritableStreamDefaultController_methods[] = {
JS_FN("error", WritableStreamDefaultController_error, 1, 0), JS_FS_END};
JS_STREAMS_CLASS_SPEC(WritableStreamDefaultController, 0, SlotCount,
ClassSpec::DontDefineConstructor, 0, JS_NULL_CLASS_OPS);
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