Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 258 insertions, 0 deletions

diff --git a/storage/mozStorageStatementJSHelper.cpp b/storage/mozStorageStatementJSHelper.cpp
new file mode 100644
index 0000000000..c891e955a2
--- /dev/null
+++ b/storage/mozStorageStatementJSHelper.cpp
@@ -0,0 +1,258 @@
+/* -*- 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 "nsString.h"
+#include "nsServiceManagerUtils.h"
+
+#include "mozStorageStatementJSHelper.h"
+
+#include "mozStorageStatementRow.h"
+#include "mozStorageStatementParams.h"
+
+#include "jsapi.h"
+#include "js/PropertyAndElement.h"  // JS_DefineFunction, JS_DefineProperty, JS_DefinePropertyById
+#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::Rooted<JSObject*> 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::Rooted<JSObject*> 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::Rooted<JSObject*> 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 (!aId.isString()) 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 = id.toLinearString();
+  if (::JS_LinearStringEqualsLiteral(str, "step")) {
+    *_retval = ::JS_DefineFunction(aCtx, scope, "step", stepFunc, 0,
+                                   JSPROP_RESOLVING) != nullptr;
+    *aResolvedp = true;
+    return NS_OK;
+  }
+
+  JS::Rooted<JS::Value> 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