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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /storage/mozStorageAsyncStatementJSHelper.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'storage/mozStorageAsyncStatementJSHelper.cpp')
-rw-r--r--storage/mozStorageAsyncStatementJSHelper.cpp153
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diff --git a/storage/mozStorageAsyncStatementJSHelper.cpp b/storage/mozStorageAsyncStatementJSHelper.cpp
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+++ b/storage/mozStorageAsyncStatementJSHelper.cpp
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
+ * 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 "nsIXPConnect.h"
+#include "mozStorageAsyncStatement.h"
+#include "mozStorageService.h"
+
+#include "nsMemory.h"
+#include "nsString.h"
+#include "nsServiceManagerUtils.h"
+
+#include "mozStorageAsyncStatementJSHelper.h"
+
+#include "mozStorageAsyncStatementParams.h"
+
+#include "jsapi.h"
+
+#include "xpc_make_class.h"
+
+namespace mozilla {
+namespace storage {
+
+////////////////////////////////////////////////////////////////////////////////
+//// AsyncStatementJSHelper
+
+nsresult
+AsyncStatementJSHelper::getParams(AsyncStatement *aStatement,
+ JSContext *aCtx,
+ JSObject *aScopeObj,
+ JS::Value *_params)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ nsresult rv;
+
+#ifdef DEBUG
+ int32_t state;
+ (void)aStatement->GetState(&state);
+ NS_ASSERTION(state == mozIStorageAsyncStatement::MOZ_STORAGE_STATEMENT_READY,
+ "Invalid state to get the params object - all calls will fail!");
+#endif
+
+ if (!aStatement->mStatementParamsHolder) {
+ nsCOMPtr<mozIStorageStatementParams> params =
+ new AsyncStatementParams(aStatement);
+ NS_ENSURE_TRUE(params, NS_ERROR_OUT_OF_MEMORY);
+
+ JS::RootedObject scope(aCtx, aScopeObj);
+ nsCOMPtr<nsIXPConnectJSObjectHolder> holder;
+ nsCOMPtr<nsIXPConnect> xpc(Service::getXPConnect());
+ rv = xpc->WrapNativeHolder(
+ aCtx,
+ ::JS_GetGlobalForObject(aCtx, scope),
+ params,
+ NS_GET_IID(mozIStorageStatementParams),
+ getter_AddRefs(holder)
+ );
+ NS_ENSURE_SUCCESS(rv, rv);
+ RefPtr<AsyncStatementParamsHolder> paramsHolder =
+ new AsyncStatementParamsHolder(holder);
+ aStatement->mStatementParamsHolder =
+ new nsMainThreadPtrHolder<nsIXPConnectJSObjectHolder>(paramsHolder);
+ }
+
+ JS::Rooted<JSObject*> obj(aCtx);
+ obj = aStatement->mStatementParamsHolder->GetJSObject();
+ NS_ENSURE_STATE(obj);
+
+ _params->setObject(*obj);
+ return NS_OK;
+}
+
+NS_IMETHODIMP_(MozExternalRefCountType) AsyncStatementJSHelper::AddRef() { return 2; }
+NS_IMETHODIMP_(MozExternalRefCountType) AsyncStatementJSHelper::Release() { return 1; }
+NS_INTERFACE_MAP_BEGIN(AsyncStatementJSHelper)
+ NS_INTERFACE_MAP_ENTRY(nsIXPCScriptable)
+ NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+////////////////////////////////////////////////////////////////////////////////
+//// nsIXPCScriptable
+
+#define XPC_MAP_CLASSNAME AsyncStatementJSHelper
+#define XPC_MAP_QUOTED_CLASSNAME "AsyncStatementJSHelper"
+#define XPC_MAP_WANT_GETPROPERTY
+#define XPC_MAP_FLAGS nsIXPCScriptable::ALLOW_PROP_MODS_DURING_RESOLVE
+#include "xpc_map_end.h"
+
+NS_IMETHODIMP
+AsyncStatementJSHelper::GetProperty(nsIXPConnectWrappedNative *aWrapper,
+ JSContext *aCtx,
+ JSObject *aScopeObj,
+ jsid aId,
+ JS::Value *_result,
+ bool *_retval)
+{
+ if (!JSID_IS_STRING(aId))
+ return NS_OK;
+
+ // Cast to async via mozI* since direct from nsISupports is ambiguous.
+ JS::RootedObject scope(aCtx, aScopeObj);
+ JS::RootedId id(aCtx, aId);
+ mozIStorageAsyncStatement *iAsyncStmt =
+ static_cast<mozIStorageAsyncStatement *>(aWrapper->Native());
+ AsyncStatement *stmt = static_cast<AsyncStatement *>(iAsyncStmt);
+
+#ifdef DEBUG
+ {
+ nsISupports *supp = aWrapper->Native();
+ nsCOMPtr<mozIStorageAsyncStatement> isStatement(do_QueryInterface(supp));
+ NS_ASSERTION(isStatement, "How is this not an async statement?!");
+ }
+#endif
+
+ if (::JS_FlatStringEqualsAscii(JSID_TO_FLAT_STRING(id), "params"))
+ return getParams(stmt, aCtx, scope, _result);
+
+ return NS_OK;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//// AsyncStatementParamsHolder
+
+NS_IMPL_ISUPPORTS(AsyncStatementParamsHolder, nsIXPConnectJSObjectHolder);
+
+JSObject*
+AsyncStatementParamsHolder::GetJSObject()
+{
+ return mHolder->GetJSObject();
+}
+
+AsyncStatementParamsHolder::AsyncStatementParamsHolder(nsIXPConnectJSObjectHolder* aHolder)
+ : mHolder(aHolder)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ MOZ_ASSERT(mHolder);
+}
+
+AsyncStatementParamsHolder::~AsyncStatementParamsHolder()
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ // We are considered dead at this point, so any wrappers for row or params
+ // need to lose their reference to the statement.
+ nsCOMPtr<nsIXPConnectWrappedNative> wrapper = do_QueryInterface(mHolder);
+ nsCOMPtr<mozIStorageStatementParams> iObj = do_QueryWrappedNative(wrapper);
+ AsyncStatementParams *obj = static_cast<AsyncStatementParams *>(iObj.get());
+ obj->mStatement = nullptr;
+}
+
+} // namespace storage
+} // namespace mozilla