gecko/dom/workers/Exceptions.cpp

471 lines
12 KiB
C++

/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Web Workers.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Ben Turner <bent.mozilla@gmail.com> (Original Author)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "mozilla/Util.h"
#include "Exceptions.h"
#include "jsapi.h"
#include "jscntxt.h"
#include "jsfriendapi.h"
#include "jsprf.h"
#include "nsTraceRefcnt.h"
#include "WorkerInlines.h"
#define PROPERTY_FLAGS \
JSPROP_ENUMERATE | JSPROP_SHARED
#define CONSTANT_FLAGS \
JSPROP_ENUMERATE | JSPROP_SHARED | JSPROP_PERMANENT | JSPROP_READONLY
using namespace mozilla;
USING_WORKERS_NAMESPACE
namespace {
class DOMException : public PrivatizableBase
{
static JSClass sClass;
static JSPropertySpec sProperties[];
static JSFunctionSpec sFunctions[];
static JSPropertySpec sStaticProperties[];
enum SLOT {
SLOT_code = 0,
SLOT_name,
SLOT_COUNT
};
public:
static JSObject*
InitClass(JSContext* aCx, JSObject* aObj)
{
JSObject* proto = JS_InitClass(aCx, aObj, NULL, &sClass, Construct, 0,
sProperties, sFunctions, sStaticProperties,
NULL);
if (proto && !JS_DefineProperties(aCx, proto, sStaticProperties)) {
return NULL;
}
return proto;
}
static JSObject*
Create(JSContext* aCx, intN aCode);
private:
DOMException()
{
MOZ_COUNT_CTOR(mozilla::dom::workers::exceptions::DOMException);
}
~DOMException()
{
MOZ_COUNT_DTOR(mozilla::dom::workers::exceptions::DOMException);
}
static JSBool
Construct(JSContext* aCx, uintN aArgc, jsval* aVp)
{
JS_ReportErrorNumber(aCx, js_GetErrorMessage, NULL, JSMSG_WRONG_CONSTRUCTOR,
sClass.name);
return false;
}
static void
Finalize(JSContext* aCx, JSObject* aObj)
{
JS_ASSERT(JS_GET_CLASS(aCx, aObj) == &sClass);
delete GetJSPrivateSafeish<DOMException>(aCx, aObj);
}
static JSBool
ToString(JSContext* aCx, uintN aArgc, jsval* aVp)
{
JSObject* obj = JS_THIS_OBJECT(aCx, aVp);
if (!obj) {
return false;
}
JSClass* classPtr;
if (!obj || ((classPtr = JS_GET_CLASS(aCx, obj)) != &sClass)) {
JS_ReportErrorNumber(aCx, js_GetErrorMessage, NULL,
JSMSG_INCOMPATIBLE_PROTO, sClass.name, "toString",
classPtr ? classPtr->name : "object");
return false;
}
char buf[100];
JS_snprintf(buf, sizeof(buf), "%s: ", sClass.name);
JSString* classString = JS_NewStringCopyZ(aCx, buf);
if (!classString) {
return false;
}
jsval name;
if (!JS_GetReservedSlot(aCx, obj, SLOT_name, &name)) {
return false;
}
JS_ASSERT(JSVAL_IS_STRING(name));
JSString* out = JS_ConcatStrings(aCx, classString, JSVAL_TO_STRING(name));
if (!out) {
return false;
}
JS_SET_RVAL(aCx, aVp, STRING_TO_JSVAL(out));
return true;
}
static JSBool
GetProperty(JSContext* aCx, JSObject* aObj, jsid aIdval, jsval* aVp)
{
JS_ASSERT(JSID_IS_INT(aIdval));
int32 slot = JSID_TO_INT(aIdval);
JSClass* classPtr = JS_GET_CLASS(aCx, aObj);
if (classPtr != &sClass ||
!GetJSPrivateSafeish<DOMException>(aCx, aObj)) {
JS_ReportErrorNumber(aCx, js_GetErrorMessage, NULL,
JSMSG_INCOMPATIBLE_PROTO, sClass.name,
sProperties[slot].name,
classPtr ? classPtr->name : "object");
return false;
}
return JS_GetReservedSlot(aCx, aObj, slot, aVp);
}
static JSBool
GetConstant(JSContext* aCx, JSObject* aObj, jsid idval, jsval* aVp)
{
JS_ASSERT(JSID_IS_INT(idval));
*aVp = INT_TO_JSVAL(JSID_TO_INT(idval));
return true;
}
};
JSClass DOMException::sClass = {
"DOMException",
JSCLASS_HAS_PRIVATE | JSCLASS_HAS_RESERVED_SLOTS(SLOT_COUNT),
JS_PropertyStub, JS_PropertyStub, JS_PropertyStub, JS_StrictPropertyStub,
JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, Finalize,
JSCLASS_NO_OPTIONAL_MEMBERS
};
JSPropertySpec DOMException::sProperties[] = {
{ "code", SLOT_code, PROPERTY_FLAGS, GetProperty, js_GetterOnlyPropertyStub },
{ "name", SLOT_name, PROPERTY_FLAGS, GetProperty, js_GetterOnlyPropertyStub },
{ 0, 0, 0, NULL, NULL }
};
JSFunctionSpec DOMException::sFunctions[] = {
JS_FN("toString", ToString, 0, 0),
JS_FS_END
};
JSPropertySpec DOMException::sStaticProperties[] = {
#define EXCEPTION_ENTRY(_name) \
{ #_name, _name, CONSTANT_FLAGS, GetConstant, NULL },
// Make sure this one is always first.
EXCEPTION_ENTRY(UNKNOWN_ERR)
EXCEPTION_ENTRY(INDEX_SIZE_ERR)
EXCEPTION_ENTRY(DOMSTRING_SIZE_ERR)
EXCEPTION_ENTRY(HIERARCHY_REQUEST_ERR)
EXCEPTION_ENTRY(WRONG_DOCUMENT_ERR)
EXCEPTION_ENTRY(INVALID_CHARACTER_ERR)
EXCEPTION_ENTRY(NO_DATA_ALLOWED_ERR)
EXCEPTION_ENTRY(NO_MODIFICATION_ALLOWED_ERR)
EXCEPTION_ENTRY(NOT_FOUND_ERR)
EXCEPTION_ENTRY(NOT_SUPPORTED_ERR)
EXCEPTION_ENTRY(INUSE_ATTRIBUTE_ERR)
EXCEPTION_ENTRY(INVALID_STATE_ERR)
EXCEPTION_ENTRY(SYNTAX_ERR)
EXCEPTION_ENTRY(INVALID_MODIFICATION_ERR)
EXCEPTION_ENTRY(NAMESPACE_ERR)
EXCEPTION_ENTRY(INVALID_ACCESS_ERR)
EXCEPTION_ENTRY(VALIDATION_ERR)
EXCEPTION_ENTRY(TYPE_MISMATCH_ERR)
EXCEPTION_ENTRY(SECURITY_ERR)
EXCEPTION_ENTRY(NETWORK_ERR)
EXCEPTION_ENTRY(ABORT_ERR)
EXCEPTION_ENTRY(URL_MISMATCH_ERR)
EXCEPTION_ENTRY(QUOTA_EXCEEDED_ERR)
EXCEPTION_ENTRY(TIMEOUT_ERR)
EXCEPTION_ENTRY(INVALID_NODE_TYPE_ERR)
EXCEPTION_ENTRY(DATA_CLONE_ERR)
#undef EXCEPTION_ENTRY
{ 0, 0, 0, NULL, NULL }
};
// static
JSObject*
DOMException::Create(JSContext* aCx, intN aCode)
{
JSObject* obj = JS_NewObject(aCx, &sClass, NULL, NULL);
if (!obj) {
return NULL;
}
size_t foundIndex = size_t(-1);
for (size_t index = 0; index < ArrayLength(sStaticProperties) - 1; index++) {
if (sStaticProperties[index].tinyid == aCode) {
foundIndex = index;
break;
}
}
if (foundIndex == size_t(-1)) {
foundIndex = 0;
}
JSString* name = JS_NewStringCopyZ(aCx, sStaticProperties[foundIndex].name);
if (!name) {
return NULL;
}
if (!JS_SetReservedSlot(aCx, obj, SLOT_code, INT_TO_JSVAL(aCode)) ||
!JS_SetReservedSlot(aCx, obj, SLOT_name, STRING_TO_JSVAL(name))) {
return NULL;
}
DOMException* priv = new DOMException();
if (!SetJSPrivateSafeish(aCx, obj, priv)) {
delete priv;
return NULL;
}
return obj;
}
class FileException : public PrivatizableBase
{
static JSClass sClass;
static JSPropertySpec sProperties[];
static JSPropertySpec sStaticProperties[];
enum SLOT {
SLOT_code = 0,
SLOT_name,
SLOT_COUNT
};
public:
static JSObject*
InitClass(JSContext* aCx, JSObject* aObj)
{
return JS_InitClass(aCx, aObj, NULL, &sClass, Construct, 0, sProperties,
NULL, sStaticProperties, NULL);
}
static JSObject*
Create(JSContext* aCx, intN aCode);
private:
FileException()
{
MOZ_COUNT_CTOR(mozilla::dom::workers::exceptions::FileException);
}
~FileException()
{
MOZ_COUNT_DTOR(mozilla::dom::workers::exceptions::FileException);
}
static JSBool
Construct(JSContext* aCx, uintN aArgc, jsval* aVp)
{
JS_ReportErrorNumber(aCx, js_GetErrorMessage, NULL, JSMSG_WRONG_CONSTRUCTOR,
sClass.name);
return false;
}
static void
Finalize(JSContext* aCx, JSObject* aObj)
{
JS_ASSERT(JS_GET_CLASS(aCx, aObj) == &sClass);
delete GetJSPrivateSafeish<FileException>(aCx, aObj);
}
static JSBool
GetProperty(JSContext* aCx, JSObject* aObj, jsid aIdval, jsval* aVp)
{
JS_ASSERT(JSID_IS_INT(aIdval));
int32 slot = JSID_TO_INT(aIdval);
JSClass* classPtr = JS_GET_CLASS(aCx, aObj);
if (classPtr != &sClass ||
!GetJSPrivateSafeish<FileException>(aCx, aObj)) {
JS_ReportErrorNumber(aCx, js_GetErrorMessage, NULL,
JSMSG_INCOMPATIBLE_PROTO, sClass.name,
sProperties[slot].name,
classPtr ? classPtr->name : "object");
return false;
}
return JS_GetReservedSlot(aCx, aObj, slot, aVp);
}
static JSBool
GetConstant(JSContext* aCx, JSObject* aObj, jsid idval, jsval* aVp)
{
JS_ASSERT(JSID_IS_INT(idval));
*aVp = INT_TO_JSVAL(JSID_TO_INT(idval));
return true;
}
};
JSClass FileException::sClass = {
"FileException",
JSCLASS_HAS_PRIVATE | JSCLASS_HAS_RESERVED_SLOTS(SLOT_COUNT),
JS_PropertyStub, JS_PropertyStub, JS_PropertyStub, JS_StrictPropertyStub,
JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, Finalize,
JSCLASS_NO_OPTIONAL_MEMBERS
};
JSPropertySpec FileException::sProperties[] = {
{ "code", SLOT_code, PROPERTY_FLAGS, GetProperty, js_GetterOnlyPropertyStub },
{ "name", SLOT_name, PROPERTY_FLAGS, GetProperty, js_GetterOnlyPropertyStub },
{ 0, 0, 0, NULL, NULL }
};
JSPropertySpec FileException::sStaticProperties[] = {
#define EXCEPTION_ENTRY(_name) \
{ #_name, FILE_##_name, CONSTANT_FLAGS, GetConstant, NULL },
EXCEPTION_ENTRY(NOT_FOUND_ERR)
EXCEPTION_ENTRY(SECURITY_ERR)
EXCEPTION_ENTRY(ABORT_ERR)
EXCEPTION_ENTRY(NOT_READABLE_ERR)
EXCEPTION_ENTRY(ENCODING_ERR)
#undef EXCEPTION_ENTRY
{ 0, 0, 0, NULL, NULL }
};
// static
JSObject*
FileException::Create(JSContext* aCx, intN aCode)
{
JSObject* obj = JS_NewObject(aCx, &sClass, NULL, NULL);
if (!obj) {
return NULL;
}
size_t foundIndex = size_t(-1);
for (size_t index = 0; index < ArrayLength(sStaticProperties) - 1; index++) {
if (sStaticProperties[index].tinyid == aCode) {
foundIndex = index;
break;
}
}
JS_ASSERT(foundIndex != size_t(-1));
JSString* name = JS_NewStringCopyZ(aCx, sStaticProperties[foundIndex].name);
if (!name) {
return NULL;
}
if (!JS_SetReservedSlot(aCx, obj, SLOT_code, INT_TO_JSVAL(aCode)) ||
!JS_SetReservedSlot(aCx, obj, SLOT_name, STRING_TO_JSVAL(name))) {
return NULL;
}
FileException* priv = new FileException();
if (!SetJSPrivateSafeish(aCx, obj, priv)) {
delete priv;
return NULL;
}
return obj;
}
} // anonymous namespace
BEGIN_WORKERS_NAMESPACE
namespace exceptions {
bool
InitClasses(JSContext* aCx, JSObject* aGlobal)
{
return DOMException::InitClass(aCx, aGlobal) &&
FileException::InitClass(aCx, aGlobal);
}
void
ThrowDOMExceptionForCode(JSContext* aCx, intN aCode)
{
JSObject* exception = DOMException::Create(aCx, aCode);
JS_ASSERT(exception);
JS_SetPendingException(aCx, OBJECT_TO_JSVAL(exception));
}
void
ThrowFileExceptionForCode(JSContext* aCx, intN aCode)
{
JSObject* exception = FileException::Create(aCx, aCode);
JS_ASSERT(exception);
JS_SetPendingException(aCx, OBJECT_TO_JSVAL(exception));
}
} // namespace exceptions
END_WORKERS_NAMESPACE