gecko-dev/dom/workers/Exceptions.cpp

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/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* 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 "Exceptions.h"
#include "jsapi.h"
#include "jsfriendapi.h"
#include "jsprf.h"
#include "mozilla/Util.h"
#include "nsDOMException.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_message,
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, nsresult aNSResult);
private:
DOMException()
{
MOZ_COUNT_CTOR(mozilla::dom::workers::exceptions::DOMException);
}
~DOMException()
{
MOZ_COUNT_DTOR(mozilla::dom::workers::exceptions::DOMException);
}
static JSBool
Construct(JSContext* aCx, unsigned aArgc, jsval* aVp)
{
JS_ReportErrorNumber(aCx, js_GetErrorMessage, NULL, JSMSG_WRONG_CONSTRUCTOR,
sClass.name);
return false;
}
static void
Finalize(JSFreeOp* aFop, JSObject* aObj)
{
JS_ASSERT(JS_GetClass(aObj) == &sClass);
delete GetJSPrivateSafeish<DOMException>(aObj);
}
static JSBool
ToString(JSContext* aCx, unsigned aArgc, jsval* aVp)
{
JSObject* obj = JS_THIS_OBJECT(aCx, aVp);
if (!obj) {
return false;
}
JSClass* classPtr = JS_GetClass(obj);
if (classPtr != &sClass) {
JS_ReportErrorNumber(aCx, js_GetErrorMessage, NULL,
JSMSG_INCOMPATIBLE_PROTO, sClass.name, "toString",
classPtr->name);
return false;
}
jsval name = JS_GetReservedSlot(obj, SLOT_name);
JS_ASSERT(name.isString());
JSString *colon = JS_NewStringCopyN(aCx, ": ", 2);
if (!colon){
return false;
}
JSString* out = JS_ConcatStrings(aCx, name.toString(), colon);
if (!out) {
return false;
}
jsval message = JS_GetReservedSlot(obj, SLOT_message);
JS_ASSERT(message.isString());
out = JS_ConcatStrings(aCx, out, message.toString());
if (!out) {
return false;
}
JS_SET_RVAL(aCx, aVp, STRING_TO_JSVAL(out));
return true;
}
static JSBool
GetProperty(JSContext* aCx, JSHandleObject aObj, JSHandleId aIdval, JSMutableHandleValue aVp)
{
JS_ASSERT(JSID_IS_INT(aIdval));
int32_t slot = JSID_TO_INT(aIdval);
JSClass* classPtr = JS_GetClass(aObj);
if (classPtr != &sClass || !GetJSPrivateSafeish<DOMException>(aObj)) {
JS_ReportErrorNumber(aCx, js_GetErrorMessage, NULL,
JSMSG_INCOMPATIBLE_PROTO, sClass.name,
sProperties[slot].name, classPtr->name);
return false;
}
aVp.set(JS_GetReservedSlot(aObj, slot));
return true;
}
static JSBool
GetConstant(JSContext* aCx, JSHandleObject aObj, JSHandleId idval, JSMutableHandleValue aVp)
{
JS_ASSERT(JSID_IS_INT(idval));
aVp.set(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
};
JSPropertySpec DOMException::sProperties[] = {
{ "code", SLOT_code, PROPERTY_FLAGS, JSOP_WRAPPER(GetProperty),
JSOP_WRAPPER(js_GetterOnlyPropertyStub) },
{ "name", SLOT_name, PROPERTY_FLAGS, JSOP_WRAPPER(GetProperty),
JSOP_WRAPPER(js_GetterOnlyPropertyStub) },
{ "message", SLOT_message, PROPERTY_FLAGS, JSOP_WRAPPER(GetProperty),
JSOP_WRAPPER(js_GetterOnlyPropertyStub) },
{ 0, 0, 0, JSOP_NULLWRAPPER, JSOP_NULLWRAPPER }
};
JSFunctionSpec DOMException::sFunctions[] = {
JS_FN("toString", ToString, 0, 0),
JS_FS_END
};
JSPropertySpec DOMException::sStaticProperties[] = {
#define EXCEPTION_ENTRY(_name) \
{ #_name, _name, CONSTANT_FLAGS, JSOP_WRAPPER(GetConstant), JSOP_NULLWRAPPER },
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, JSOP_NULLWRAPPER, JSOP_NULLWRAPPER }
};
// static
JSObject*
DOMException::Create(JSContext* aCx, nsresult aNSResult)
{
JSObject* obj = JS_NewObject(aCx, &sClass, NULL, NULL);
if (!obj) {
return NULL;
}
const char* name;
const char* message;
uint16_t code;
if (NS_FAILED(NS_GetNameAndMessageForDOMNSResult(aNSResult, &name, &message,
&code))) {
JS_ReportError(aCx, "Exception thrown (nsresult = 0x%x).", aNSResult);
return NULL;
}
JSString* jsname = JS_NewStringCopyZ(aCx, name);
if (!jsname) {
return NULL;
}
JSString* jsmessage = JS_NewStringCopyZ(aCx, message);
if (!jsmessage) {
return NULL;
}
JS_SetReservedSlot(obj, SLOT_code, INT_TO_JSVAL(code));
JS_SetReservedSlot(obj, SLOT_name, STRING_TO_JSVAL(jsname));
JS_SetReservedSlot(obj, SLOT_message, STRING_TO_JSVAL(jsmessage));
DOMException* priv = new DOMException();
SetJSPrivateSafeish(obj, priv);
return obj;
}
} // anonymous namespace
BEGIN_WORKERS_NAMESPACE
namespace exceptions {
bool
InitClasses(JSContext* aCx, JSObject* aGlobal)
{
return DOMException::InitClass(aCx, aGlobal);
}
void
ThrowDOMExceptionForNSResult(JSContext* aCx, nsresult aNSResult)
{
JSObject* exception = DOMException::Create(aCx, aNSResult);
if (!exception) {
return;
}
JS_SetPendingException(aCx, OBJECT_TO_JSVAL(exception));
}
} // namespace exceptions
END_WORKERS_NAMESPACE