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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 "mozStorageStatement.h"
#include "mozStorageService.h"
#include "nsMemory.h"
#include "nsString.h"
#include "nsServiceManagerUtils.h"
#include "mozStorageStatementJSHelper.h"
#include "mozStorageStatementRow.h"
#include "mozStorageStatementParams.h"
#include "jsapi.h"
#include "js/Value.h"
#include "xpc_make_class.h"
namespace mozilla {
namespace storage {
////////////////////////////////////////////////////////////////////////////////
//// Global Functions
static bool stepFunc(JSContext* aCtx, uint32_t argc, JS::Value* _vp) {
JS::CallArgs args = CallArgsFromVp(argc, _vp);
nsCOMPtr<nsIXPConnect> xpc(nsIXPConnect::XPConnect());
nsCOMPtr<nsIXPConnectWrappedNative> wrapper;
if (!args.thisv().isObject()) {
::JS_ReportErrorASCII(aCtx, "mozIStorageStatement::step() requires object");
return false;
}
JS::RootedObject obj(aCtx, &args.thisv().toObject());
nsresult rv =
xpc->GetWrappedNativeOfJSObject(aCtx, obj, getter_AddRefs(wrapper));
if (NS_FAILED(rv)) {
::JS_ReportErrorASCII(
aCtx, "mozIStorageStatement::step() could not obtain native statement");
return false;
}
#ifdef DEBUG
{
nsCOMPtr<mozIStorageStatement> isStatement(
do_QueryInterface(wrapper->Native()));
NS_ASSERTION(isStatement, "How is this not a statement?!");
}
#endif
Statement* stmt = static_cast<Statement*>(
static_cast<mozIStorageStatement*>(wrapper->Native()));
bool hasMore = false;
rv = stmt->ExecuteStep(&hasMore);
if (NS_SUCCEEDED(rv) && !hasMore) {
args.rval().setBoolean(false);
(void)stmt->Reset();
return true;
}
if (NS_FAILED(rv)) {
::JS_ReportErrorASCII(aCtx,
"mozIStorageStatement::step() returned an error");
return false;
}
args.rval().setBoolean(hasMore);
return true;
}
////////////////////////////////////////////////////////////////////////////////
//// StatementJSHelper
nsresult StatementJSHelper::getRow(Statement* aStatement, JSContext* aCtx,
JSObject* aScopeObj, JS::Value* _row) {
MOZ_ASSERT(NS_IsMainThread());
#ifdef DEBUG
int32_t state;
(void)aStatement->GetState(&state);
NS_ASSERTION(state == mozIStorageStatement::MOZ_STORAGE_STATEMENT_EXECUTING,
"Invalid state to get the row object - all calls will fail!");
#endif
JS::RootedObject scope(aCtx, aScopeObj);
if (!aStatement->mStatementRowHolder) {
dom::GlobalObject global(aCtx, scope);
if (global.Failed()) {
return NS_ERROR_UNEXPECTED;
}
nsCOMPtr<nsPIDOMWindowInner> window =
do_QueryInterface(global.GetAsSupports());
RefPtr<StatementRow> row(new StatementRow(window, aStatement));
NS_ENSURE_TRUE(row, NS_ERROR_OUT_OF_MEMORY);
RefPtr<StatementRowHolder> rowHolder = new StatementRowHolder(row);
NS_ENSURE_TRUE(rowHolder, NS_ERROR_OUT_OF_MEMORY);
aStatement->mStatementRowHolder =
new nsMainThreadPtrHolder<StatementRowHolder>(
"Statement::mStatementRowHolder", rowHolder);
}
RefPtr<StatementRow> row(aStatement->mStatementRowHolder->Get());
JSObject* obj = row->WrapObject(aCtx, nullptr);
if (!obj) {
return NS_ERROR_UNEXPECTED;
}
_row->setObject(*obj);
return NS_OK;
}
nsresult StatementJSHelper::getParams(Statement* aStatement, JSContext* aCtx,
JSObject* aScopeObj, JS::Value* _params) {
MOZ_ASSERT(NS_IsMainThread());
#ifdef DEBUG
int32_t state;
(void)aStatement->GetState(&state);
NS_ASSERTION(state == mozIStorageStatement::MOZ_STORAGE_STATEMENT_READY,
"Invalid state to get the params object - all calls will fail!");
#endif
JS::RootedObject scope(aCtx, aScopeObj);
if (!aStatement->mStatementParamsHolder) {
dom::GlobalObject global(aCtx, scope);
if (global.Failed()) {
return NS_ERROR_UNEXPECTED;
}
nsCOMPtr<nsPIDOMWindowInner> window =
do_QueryInterface(global.GetAsSupports());
RefPtr<StatementParams> params(new StatementParams(window, aStatement));
NS_ENSURE_TRUE(params, NS_ERROR_OUT_OF_MEMORY);
RefPtr<StatementParamsHolder> paramsHolder =
new StatementParamsHolder(params);
NS_ENSURE_TRUE(paramsHolder, NS_ERROR_OUT_OF_MEMORY);
aStatement->mStatementParamsHolder =
new nsMainThreadPtrHolder<StatementParamsHolder>(
"Statement::mStatementParamsHolder", paramsHolder);
}
RefPtr<StatementParams> params(aStatement->mStatementParamsHolder->Get());
JSObject* obj = params->WrapObject(aCtx, nullptr);
if (!obj) {
return NS_ERROR_UNEXPECTED;
}
_params->setObject(*obj);
return NS_OK;
}
NS_IMETHODIMP_(MozExternalRefCountType) StatementJSHelper::AddRef() {
return 2;
}
NS_IMETHODIMP_(MozExternalRefCountType) StatementJSHelper::Release() {
return 1;
}
NS_INTERFACE_MAP_BEGIN(StatementJSHelper)
NS_INTERFACE_MAP_ENTRY(nsIXPCScriptable)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
////////////////////////////////////////////////////////////////////////////////
//// nsIXPCScriptable
#define XPC_MAP_CLASSNAME StatementJSHelper
#define XPC_MAP_QUOTED_CLASSNAME "StatementJSHelper"
#define XPC_MAP_FLAGS \
(XPC_SCRIPTABLE_WANT_RESOLVE | XPC_SCRIPTABLE_ALLOW_PROP_MODS_DURING_RESOLVE)
#include "xpc_map_end.h"
NS_IMETHODIMP
StatementJSHelper::Resolve(nsIXPConnectWrappedNative* aWrapper, JSContext* aCtx,
JSObject* aScopeObj, jsid aId, bool* aResolvedp,
bool* _retval) {
if (!JSID_IS_STRING(aId)) return NS_OK;
JS::Rooted<JSObject*> scope(aCtx, aScopeObj);
JS::Rooted<jsid> id(aCtx, aId);
#ifdef DEBUG
{
nsCOMPtr<mozIStorageStatement> isStatement(
do_QueryInterface(aWrapper->Native()));
NS_ASSERTION(isStatement, "How is this not a statement?!");
}
#endif
Statement* stmt = static_cast<Statement*>(
static_cast<mozIStorageStatement*>(aWrapper->Native()));
JSLinearString* str = JSID_TO_LINEAR_STRING(id);
if (::JS_LinearStringEqualsLiteral(str, "step")) {
*_retval = ::JS_DefineFunction(aCtx, scope, "step", stepFunc, 0,
JSPROP_RESOLVING) != nullptr;
*aResolvedp = true;
return NS_OK;
}
JS::RootedValue val(aCtx);
if (::JS_LinearStringEqualsLiteral(str, "row")) {
nsresult rv = getRow(stmt, aCtx, scope, val.address());
NS_ENSURE_SUCCESS(rv, rv);
*_retval = ::JS_DefinePropertyById(aCtx, scope, id, val, JSPROP_RESOLVING);
*aResolvedp = true;
return NS_OK;
}
if (::JS_LinearStringEqualsLiteral(str, "params")) {
nsresult rv = getParams(stmt, aCtx, scope, val.address());
NS_ENSURE_SUCCESS(rv, rv);
*_retval = ::JS_DefinePropertyById(aCtx, scope, id, val, JSPROP_RESOLVING);
*aResolvedp = true;
return NS_OK;
}
return NS_OK;
}
NS_IMPL_ISUPPORTS0(StatementParamsHolder);
StatementParamsHolder::~StatementParamsHolder() {
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.
mParams->mStatement = nullptr;
}
NS_IMPL_ISUPPORTS0(StatementRowHolder);
StatementRowHolder::~StatementRowHolder() {
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.
mRow->mStatement = nullptr;
}
} // namespace storage
} // namespace mozilla