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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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This commit is contained in:
Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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36
dom/bindings/CallbackInterface.cpp Normal file
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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/. */
#include "mozilla/dom/CallbackInterface.h"
#include "jsapi.h"
#include "mozilla/dom/BindingUtils.h"
#include "nsPrintfCString.h"
namespace mozilla {
namespace dom {
bool
CallbackInterface::GetCallableProperty(JSContext* cx, JS::Handle<jsid> aPropId,
JS::MutableHandle<JS::Value> aCallable)
{
if (!JS_GetPropertyById(cx, CallbackKnownNotGray(), aPropId, aCallable)) {
return false;
}
if (!aCallable.isObject() ||
!JS::IsCallable(&aCallable.toObject())) {
char* propName =
JS_EncodeString(cx, JS_FORGET_STRING_FLATNESS(JSID_TO_FLAT_STRING(aPropId)));
nsPrintfCString description("Property '%s'", propName);
JS_free(cx, propName);
ThrowErrorMessage(cx, MSG_NOT_CALLABLE, description.get());
return false;
}
return true;
}
} // namespace dom
} // namespace mozilla