156 lines
4.6 KiB
C++
156 lines
4.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsMemory.h"
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#include "nsString.h"
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#include "mozStorageStatementRow.h"
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#include "mozStorageStatement.h"
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#include "jsapi.h"
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namespace mozilla {
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namespace storage {
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////////////////////////////////////////////////////////////////////////////////
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//// StatementRow
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StatementRow::StatementRow(Statement *aStatement)
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: mStatement(aStatement)
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{
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}
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NS_IMPL_ISUPPORTS(
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StatementRow,
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mozIStorageStatementRow,
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nsIXPCScriptable
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)
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////////////////////////////////////////////////////////////////////////////////
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//// nsIXPCScriptable
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#define XPC_MAP_CLASSNAME StatementRow
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#define XPC_MAP_QUOTED_CLASSNAME "StatementRow"
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#define XPC_MAP_WANT_GETPROPERTY
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#define XPC_MAP_WANT_RESOLVE
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#define XPC_MAP_FLAGS nsIXPCScriptable::ALLOW_PROP_MODS_DURING_RESOLVE
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#include "xpc_map_end.h"
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NS_IMETHODIMP
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StatementRow::GetProperty(nsIXPConnectWrappedNative *aWrapper,
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JSContext *aCtx,
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JSObject *aScopeObj,
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jsid aId,
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JS::Value *_vp,
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bool *_retval)
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{
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NS_ENSURE_TRUE(mStatement, NS_ERROR_NOT_INITIALIZED);
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JS::RootedObject scope(aCtx, aScopeObj);
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if (JSID_IS_STRING(aId)) {
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::JSAutoByteString idBytes(aCtx, JSID_TO_STRING(aId));
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NS_ENSURE_TRUE(!!idBytes, NS_ERROR_OUT_OF_MEMORY);
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nsDependentCString jsid(idBytes.ptr());
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uint32_t idx;
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nsresult rv = mStatement->GetColumnIndex(jsid, &idx);
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NS_ENSURE_SUCCESS(rv, rv);
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int32_t type;
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rv = mStatement->GetTypeOfIndex(idx, &type);
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NS_ENSURE_SUCCESS(rv, rv);
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if (type == mozIStorageValueArray::VALUE_TYPE_INTEGER ||
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type == mozIStorageValueArray::VALUE_TYPE_FLOAT) {
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double dval;
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rv = mStatement->GetDouble(idx, &dval);
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NS_ENSURE_SUCCESS(rv, rv);
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*_vp = ::JS_NumberValue(dval);
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}
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else if (type == mozIStorageValueArray::VALUE_TYPE_TEXT) {
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uint32_t bytes;
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const char16_t *sval = reinterpret_cast<const char16_t *>(
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static_cast<mozIStorageStatement *>(mStatement)->
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AsSharedWString(idx, &bytes)
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);
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JSString *str = ::JS_NewUCStringCopyN(aCtx, sval, bytes / 2);
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if (!str) {
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*_retval = false;
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return NS_OK;
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}
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_vp->setString(str);
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}
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else if (type == mozIStorageValueArray::VALUE_TYPE_BLOB) {
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uint32_t length;
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const uint8_t *blob = static_cast<mozIStorageStatement *>(mStatement)->
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AsSharedBlob(idx, &length);
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JSObject *obj = ::JS_NewArrayObject(aCtx, length);
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if (!obj) {
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*_retval = false;
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return NS_OK;
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}
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_vp->setObject(*obj);
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// Copy the blob over to the JS array.
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for (uint32_t i = 0; i < length; i++) {
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if (!::JS_DefineElement(aCtx, scope, i, blob[i], JSPROP_ENUMERATE)) {
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*_retval = false;
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return NS_OK;
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}
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}
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}
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else if (type == mozIStorageValueArray::VALUE_TYPE_NULL) {
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_vp->setNull();
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}
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else {
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NS_ERROR("unknown column type returned, what's going on?");
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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StatementRow::Resolve(nsIXPConnectWrappedNative *aWrapper,
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JSContext *aCtx,
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JSObject *aScopeObj,
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jsid aId,
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bool *aResolvedp,
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bool *_retval)
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{
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JS::Rooted<JSObject*> scopeObj(aCtx, aScopeObj);
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NS_ENSURE_TRUE(mStatement, NS_ERROR_NOT_INITIALIZED);
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// We do not throw at any point after this because we want to allow the
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// prototype chain to be checked for the property.
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if (JSID_IS_STRING(aId)) {
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::JSAutoByteString idBytes(aCtx, JSID_TO_STRING(aId));
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NS_ENSURE_TRUE(!!idBytes, NS_ERROR_OUT_OF_MEMORY);
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nsDependentCString name(idBytes.ptr());
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uint32_t idx;
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nsresult rv = mStatement->GetColumnIndex(name, &idx);
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if (NS_FAILED(rv)) {
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// It's highly likely that the name doesn't exist, so let the JS engine
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// check the prototype chain and throw if that doesn't have the property
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// either.
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*aResolvedp = false;
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return NS_OK;
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}
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JS::Rooted<jsid> id(aCtx, aId);
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*_retval = ::JS_DefinePropertyById(aCtx, scopeObj, id, JS::UndefinedHandleValue,
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JSPROP_RESOLVING);
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*aResolvedp = true;
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return NS_OK;
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}
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return NS_OK;
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}
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} // namespace storage
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} // namespace mozilla
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