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