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ff2e6466f4
gecko-dev/js/jsd/jsd_xpc.cpp
rginda%netscape.com ff2e6466f4 - not built - 
validate integrity of jsdScript data to guard against calling into a destroyed script.
queue up script deletes that happen during the JS GC cycle, call them when GC finishes (bug 76979.)
don't NS_IF_ADDREF objects that we get using *::FromPtr()
add jsdScript::Invalidate()
2001-05-01 21:33:43 +00:00

1305 lines
31 KiB
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* 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 mozilla.org code
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation
* Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation.
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU Public License (the "GPL"), in which case the
* provisions of the GPL are applicable instead of those above.
* If you wish to allow use of your version of this file only
* under the terms of the GPL and not to allow others to use your
* version of this file under the MPL, indicate your decision by
* deleting the provisions above and replace them with the notice
* and other provisions required by the GPL. If you do not delete
* the provisions above, a recipient may use your version of this
* file under either the MPL or the GPL.
*
* Contributor(s):
* Robert Ginda, <rginda@netscape.com>
*
*/
#include "jsd_xpc.h"
#include "nsIXPConnect.h"
#include "nsIGenericFactory.h"
#include "nsIServiceManager.h"
#include "nsString.h"
#include "nsMemory.h"
#include "jsdebug.h"
#include "prmem.h"
/* XXX this stuff is used by NestEventLoop, a temporary hack to be refactored
* later */
#include "nsWidgetsCID.h"
#include "nsIAppShell.h"
#include "nsIJSContextStack.h"
#define ASSERT_VALID_SCRIPT { if (!mValid) return NS_ERROR_NOT_AVAILABLE; }
static JSBool
jsds_GCCallbackProc (JSContext *cx, JSGCStatus status);
/*******************************************************************************
* global vars
*******************************************************************************/
static NS_DEFINE_CID(kAppShellCID, NS_APPSHELL_CID);
const char jsdServiceContractID[] = "@mozilla.org/js/jsd/debugger-service;1";
PRUint32 gScriptCount = 0;
static jsdService *gJsds = 0;
static JSGCCallback gLastGCProc = jsds_GCCallbackProc;
static JSGCStatus gGCStatus = JSGC_END;
static struct DeadScript {
PRCList links;
JSDContext *jsdc;
jsdIScript *script;
} *gDeadScripts = 0;
/*******************************************************************************
* c callbacks
*******************************************************************************/
static JSBool
jsds_GCCallbackProc (JSContext *cx, JSGCStatus status)
{
gGCStatus = status;
#ifdef DEBUG
printf ("new gc status is %i\n", status);
#endif
if (status == JSGC_END && gDeadScripts) {
nsCOMPtr<jsdIScriptHook> hook = 0;
gJsds->GetScriptHook (getter_AddRefs(hook));
if (hook)
{
DeadScript *ds;
do {
#ifdef DEBUG_verbose
printf ("calling script delete hook.\n");
#endif
ds = gDeadScripts;
/* tell the user this script has been destroyed */
hook->OnScriptDestroyed (jsdContext::FromPtr(ds->jsdc),
ds->script);
/* get next deleted script */
gDeadScripts = NS_REINTERPRET_CAST(DeadScript *,
PR_NEXT_LINK(&ds->links));
/* take ourselves out of the circular list */
PR_REMOVE_LINK(&ds->links);
/* addref came from the FromPtr call in jsds_ScriptHookProc */
NS_RELEASE(ds->script);
/* free the struct! */
PR_Free(ds);
} while (&gDeadScripts->links != &ds->links);
/* keep going until we catch up with our tail */
}
gDeadScripts = 0;
}
if (gLastGCProc)
return gLastGCProc (cx, status);
return JS_TRUE;
}
static PRUint32
jsds_BreakpointHookProc (JSDContext* jsdc, JSDThreadState* jsdthreadstate,
uintN type, void* callerdata, jsval* rval)
{
NS_PRECONDITION (callerdata, "no callerdata for jsds_BreakpointHookProc.");
nsCOMPtr<jsdIExecutionHook> hook;
gJsds->GetBreakpointHook(getter_AddRefs(hook));
if (!hook)
return NS_OK;
jsdIValue *js_rv = 0;
PRUint32 hook_rv = JSD_HOOK_RETURN_CONTINUE;
hook->OnExecute (jsdContext::FromPtr(jsdc),
jsdThreadState::FromPtr(jsdc, jsdthreadstate),
type, &js_rv, &hook_rv);
if (js_rv)
{
JSDValue *jsdv;
js_rv->GetJSDValue (&jsdv);
*rval = JSD_GetValueWrappedJSVal(jsdc, jsdv);
}
return hook_rv;
}
static PRUint32
jsds_ExecutionHookProc (JSDContext* jsdc, JSDThreadState* jsdthreadstate,
uintN type, void* callerdata, jsval* rval)
{
NS_PRECONDITION (callerdata, "no callerdata for jsds_ExecutionHookProc.");
jsdIExecutionHook *hook = NS_STATIC_CAST(jsdIExecutionHook *, callerdata);
jsdIValue *js_rv = 0;
PRUint32 hook_rv = JSD_HOOK_RETURN_CONTINUE;
hook->OnExecute (jsdContext::FromPtr(jsdc),
jsdThreadState::FromPtr(jsdc, jsdthreadstate),
type, &js_rv, &hook_rv);
if (js_rv)
{
JSDValue *jsdv;
js_rv->GetJSDValue (&jsdv);
*rval = JSD_GetValueWrappedJSVal(jsdc, jsdv);
}
return hook_rv;
}
static void
jsds_ScriptHookProc (JSDContext* jsdc, JSDScript* jsdscript, JSBool creating,
void* callerdata)
{
if (creating) {
jsdIScriptHook *hook = 0;
gJsds->GetScriptHook (&hook);
if (!hook)
return;
nsCOMPtr<jsdIContext> cx = getter_AddRefs(jsdContext::FromPtr(jsdc));
nsCOMPtr<jsdIScript> script =
getter_AddRefs(jsdScript::FromPtr(jsdc, jsdscript));
hook->OnScriptCreated (cx, script);
} else {
#ifdef DEBUG_verbose
printf ("script deleted.\n");
#endif
jsdIScript *jsdis = jsdScript::FromPtr(jsdc, jsdscript);
/* the initial addref is owned by the DeadScript record */
jsdis->Invalidate();
if (gGCStatus == JSGC_END) {
/* if GC *isn't* running, we can tell the user about the script
* delete now. */
nsCOMPtr<jsdIScriptHook> hook = 0;
gJsds->GetScriptHook (getter_AddRefs(hook));
if (hook) {
#ifdef DEBUG_verbose
printf ("calling script delete hook immediatly.\n");
#endif
hook->OnScriptDestroyed (jsdContext::FromPtr(jsdc), jsdis);
}
} else {
/* if a GC *is* running, we've got to wait until it's done before
* we can execute any JS, so we queue the notification in a PRCList
* until GC tells us it's done. See jsds_GCCallbackProc(). */
DeadScript *ds = PR_NEW(DeadScript);
if (!ds) {
NS_RELEASE(jsdis);
return; /* NS_ERROR_OUT_OF_MEMORY */
}
ds->jsdc = jsdc;
ds->script = jsdis;
if (gDeadScripts)
/* if the queue exists, add to it */
PR_APPEND_LINK(&ds->links, &gDeadScripts->links);
else {
/* otherwise create the queue */
PR_INIT_CLIST(&ds->links);
gDeadScripts = ds;
}
}
}
}
/*******************************************************************************
* reflected jsd data structures
*******************************************************************************/
/* Contexts */
NS_IMPL_THREADSAFE_ISUPPORTS1(jsdContext, jsdIContext);
NS_IMETHODIMP
jsdContext::GetJSDContext(JSDContext **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = mCx;
return NS_OK;
}
/* Objects */
NS_IMPL_THREADSAFE_ISUPPORTS1(jsdObject, jsdIObject);
NS_IMETHODIMP
jsdObject::GetJSDContext(JSDContext **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = mCx;
return NS_OK;
}
NS_IMETHODIMP
jsdObject::GetJSDObject(JSDObject **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = mObject;
return NS_OK;
}
NS_IMETHODIMP
jsdObject::GetCreatorURL(char **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = nsCString(JSD_GetObjectNewURL(mCx, mObject)).ToNewCString();
return NS_OK;
}
NS_IMETHODIMP
jsdObject::GetCreatorLine(PRUint32 *_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = JSD_GetObjectNewLineNumber(mCx, mObject);
return NS_OK;
}
NS_IMETHODIMP
jsdObject::GetConstructorURL(char **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = nsCString(JSD_GetObjectConstructorURL(mCx, mObject)).ToNewCString();
return NS_OK;
}
NS_IMETHODIMP
jsdObject::GetConstructorLine(PRUint32 *_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = JSD_GetObjectConstructorLineNumber(mCx, mObject);
return NS_OK;
}
NS_IMETHODIMP
jsdObject::GetValue(jsdIValue **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSDValue *jsdv = JSD_GetValueForObject (mCx, mObject);
*_rval = jsdValue::FromPtr (mCx, jsdv);
return NS_OK;
}
/* PC */
NS_IMPL_THREADSAFE_ISUPPORTS1(jsdPC, jsdIPC);
NS_IMETHODIMP
jsdPC::GetPc(jsuword *_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = mPC;
return NS_OK;
}
/* Properties */
NS_IMPL_THREADSAFE_ISUPPORTS1(jsdProperty, jsdIProperty);
NS_IMETHODIMP
jsdProperty::GetJSDContext(JSDContext **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = mCx;
return NS_OK;
}
NS_IMETHODIMP
jsdProperty::GetJSDProperty(JSDProperty **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = mProperty;
return NS_OK;
}
NS_IMETHODIMP
jsdProperty::GetAlias(jsdIValue **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSDValue *jsdv = JSD_GetPropertyValue (mCx, mProperty);
*_rval = jsdValue::FromPtr (mCx, jsdv);
return NS_OK;
}
NS_IMETHODIMP
jsdProperty::GetFlags(PRUint32 *_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = JSD_GetPropertyFlags (mCx, mProperty);
return NS_OK;
}
NS_IMETHODIMP
jsdProperty::GetName(jsdIValue **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSDValue *jsdv = JSD_GetPropertyName (mCx, mProperty);
*_rval = jsdValue::FromPtr (mCx, jsdv);
return NS_OK;
}
NS_IMETHODIMP
jsdProperty::GetValue(jsdIValue **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSDValue *jsdv = JSD_GetPropertyValue (mCx, mProperty);
*_rval = jsdValue::FromPtr (mCx, jsdv);
return NS_OK;
}
NS_IMETHODIMP
jsdProperty::GetVarArgSlot(PRUint32 *_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = JSD_GetPropertyVarArgSlot (mCx, mProperty);
return NS_OK;
}
/* Scripts */
NS_IMPL_THREADSAFE_ISUPPORTS1(jsdScript, jsdIScript);
NS_IMETHODIMP
jsdScript::GetJSDContext(JSDContext **_rval)
{
ASSERT_VALID_SCRIPT;
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = mCx;
return NS_OK;
}
NS_IMETHODIMP
jsdScript::GetJSDScript(JSDScript **_rval)
{
ASSERT_VALID_SCRIPT;
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = mScript;
return NS_OK;
}
NS_IMETHODIMP
jsdScript::Invalidate()
{
ASSERT_VALID_SCRIPT;
/* release the addref we do in FromPtr */
jsdIScript *script = NS_STATIC_CAST(jsdIScript *,
JSD_GetScriptPrivate(mScript));
NS_ASSERTION (script == this, "That's not my script!");
NS_RELEASE(script);
return NS_OK;
}
NS_IMETHODIMP
jsdScript::GetIsActive(PRBool *_rval)
{
ASSERT_VALID_SCRIPT;
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSD_LockScriptSubsystem(mCx);
*_rval = JSD_IsActiveScript(mCx, mScript);
JSD_UnlockScriptSubsystem(mCx);
return NS_OK;
}
NS_IMETHODIMP
jsdScript::GetFileName(char **_rval)
{
ASSERT_VALID_SCRIPT;
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSD_LockScriptSubsystem(mCx);
*_rval = nsCString(JSD_GetScriptFilename(mCx, mScript)).ToNewCString();
JSD_UnlockScriptSubsystem(mCx);
return NS_OK;
}
NS_IMETHODIMP
jsdScript::GetFunctionName(char **_rval)
{
ASSERT_VALID_SCRIPT;
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSD_LockScriptSubsystem(mCx);
*_rval = nsCString(JSD_GetScriptFunctionName(mCx, mScript)).ToNewCString();
JSD_UnlockScriptSubsystem(mCx);
return NS_OK;
}
NS_IMETHODIMP
jsdScript::GetBaseLineNumber(PRUint32 *_rval)
{
ASSERT_VALID_SCRIPT;
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSD_LockScriptSubsystem(mCx);
*_rval = JSD_GetScriptBaseLineNumber(mCx, mScript);
JSD_UnlockScriptSubsystem(mCx);
return NS_OK;
}
NS_IMETHODIMP
jsdScript::GetLineExtent(PRUint32 *_rval)
{
ASSERT_VALID_SCRIPT;
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSD_LockScriptSubsystem(mCx);
*_rval = JSD_GetScriptLineExtent(mCx, mScript);
JSD_UnlockScriptSubsystem(mCx);
return NS_OK;
}
NS_IMETHODIMP
jsdScript::PcToLine(jsdIPC *aPC, PRUint32 *_rval)
{
ASSERT_VALID_SCRIPT;
if (!_rval)
return NS_ERROR_NULL_POINTER;
jsuword pc;
aPC->GetPc(&pc);
*_rval = JSD_GetClosestLine (mCx, mScript, pc);
return NS_OK;
}
NS_IMETHODIMP
jsdScript::LineToPc(PRUint32 aLine, jsdIPC **_rval)
{
ASSERT_VALID_SCRIPT;
if (!_rval)
return NS_ERROR_NULL_POINTER;
jsuword pc = JSD_GetClosestPC (mCx, mScript, aLine);
*_rval = jsdPC::FromPtr (pc);
return NS_OK;
}
NS_IMETHODIMP
jsdScript::SetBreakpoint(jsdIPC *aPC)
{
ASSERT_VALID_SCRIPT;
jsuword pc;
aPC->GetPc (&pc);
JSD_SetExecutionHook (mCx, mScript, pc, jsds_BreakpointHookProc, NULL);
return NS_OK;
}
NS_IMETHODIMP
jsdScript::ClearBreakpoint(jsdIPC *aPC)
{
ASSERT_VALID_SCRIPT;
jsuword pc;
aPC->GetPc (&pc);
JSD_ClearExecutionHook (mCx, mScript, pc);
return NS_OK;
}
NS_IMETHODIMP
jsdScript::ClearAllBreakpoints()
{
ASSERT_VALID_SCRIPT;
JSD_ClearAllExecutionHooksForScript (mCx, mScript);
return NS_OK;
}
/* Stack Frames */
NS_IMPL_THREADSAFE_ISUPPORTS1(jsdStackFrame, jsdIStackFrame);
NS_IMETHODIMP
jsdStackFrame::GetJSDContext(JSDContext **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = mCx;
return NS_OK;
}
NS_IMETHODIMP
jsdStackFrame::GetJSDThreadState(JSDThreadState **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = mThreadState;
return NS_OK;
}
NS_IMETHODIMP
jsdStackFrame::GetJSDStackFrameInfo(JSDStackFrameInfo **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = mStackFrameInfo;
return NS_OK;
}
NS_IMETHODIMP
jsdStackFrame::GetCallingFrame(jsdIStackFrame **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSDStackFrameInfo *sfi = JSD_GetCallingStackFrame (mCx, mThreadState,
mStackFrameInfo);
*_rval = jsdStackFrame::FromPtr (mCx, mThreadState, sfi);
return NS_OK;
}
NS_IMETHODIMP
jsdStackFrame::GetScript(jsdIScript **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSDScript *script = JSD_GetScriptForStackFrame (mCx, mThreadState,
mStackFrameInfo);
*_rval = jsdScript::FromPtr (mCx, script);
return NS_OK;
}
NS_IMETHODIMP
jsdStackFrame::GetPc(jsdIPC **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
jsuword pc;
pc = JSD_GetPCForStackFrame (mCx, mThreadState, mStackFrameInfo);
*_rval = jsdPC::FromPtr (pc);
return NS_OK;
}
NS_IMETHODIMP
jsdStackFrame::GetLine(PRUint32 *_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSDScript *script = JSD_GetScriptForStackFrame (mCx, mThreadState,
mStackFrameInfo);
jsuword pc = JSD_GetPCForStackFrame (mCx, mThreadState, mStackFrameInfo);
*_rval = JSD_GetClosestLine (mCx, script, pc);
return NS_OK;
}
NS_IMETHODIMP
jsdStackFrame::GetCallee(jsdIValue **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSDValue *jsdv = JSD_GetCallObjectForStackFrame (mCx, mThreadState,
mStackFrameInfo);
*_rval = jsdValue::FromPtr (mCx, jsdv);
return NS_OK;
}
NS_IMETHODIMP
jsdStackFrame::GetScope(jsdIValue **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSDValue *jsdv = JSD_GetScopeChainForStackFrame (mCx, mThreadState,
mStackFrameInfo);
*_rval = jsdValue::FromPtr (mCx, jsdv);
return NS_OK;
}
NS_IMETHODIMP
jsdStackFrame::GetThisValue(jsdIValue **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSDValue *jsdv = JSD_GetThisForStackFrame (mCx, mThreadState,
mStackFrameInfo);
*_rval = jsdValue::FromPtr (mCx, jsdv);
return NS_OK;
}
NS_IMETHODIMP
jsdStackFrame::Eval (const nsAReadableString &bytes, const char *fileName,
PRUint32 line, jsdIValue **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
jsval jv;
const nsSharedBufferHandle<PRUnichar> *h = bytes.GetSharedBufferHandle();
const jschar *char_bytes = NS_REINTERPRET_CAST(const jschar *,
h->DataStart());
if (!JSD_EvaluateUCScriptInStackFrame (mCx, mThreadState, mStackFrameInfo,
char_bytes, bytes.Length(), fileName,
line, &jv))
return NS_ERROR_FAILURE;
JSDValue *jsdv = JSD_NewValue (mCx, jv);
*_rval = jsdValue::FromPtr (mCx, jsdv);
return NS_OK;
}
/* Thread States */
NS_IMPL_THREADSAFE_ISUPPORTS1(jsdThreadState, jsdIThreadState);
NS_IMETHODIMP
jsdThreadState::GetJSDContext(JSDContext **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = mCx;
return NS_OK;
}
NS_IMETHODIMP
jsdThreadState::GetJSDThreadState(JSDThreadState **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = mThreadState;
return NS_OK;
}
NS_IMETHODIMP
jsdThreadState::GetFrameCount (PRUint32 *_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = JSD_GetCountOfStackFrames (mCx, mThreadState);
return NS_OK;
}
NS_IMETHODIMP
jsdThreadState::GetTopFrame (jsdIStackFrame **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSDStackFrameInfo *sfi = JSD_GetStackFrame (mCx, mThreadState);
*_rval = jsdStackFrame::FromPtr (mCx, mThreadState, sfi);
return NS_OK;
}
NS_IMETHODIMP
jsdThreadState::GetPendingException(jsdIValue **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSDValue *jsdv = JSD_GetException (mCx, mThreadState);
*_rval = jsdValue::FromPtr (mCx, jsdv);
return NS_OK;
}
NS_IMETHODIMP
jsdThreadState::SetPendingException(jsdIValue *aException)
{
JSDValue *jsdv;
nsresult rv = aException->GetJSDValue (&jsdv);
if (NS_FAILED(rv))
return NS_ERROR_FAILURE;
if (!JSD_SetException (mCx, mThreadState, jsdv))
return NS_ERROR_FAILURE;
return NS_OK;
}
/* Thread States */
NS_IMPL_THREADSAFE_ISUPPORTS1(jsdValue, jsdIValue);
NS_IMETHODIMP
jsdValue::GetJSDContext(JSDContext **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = mCx;
return NS_OK;
}
NS_IMETHODIMP
jsdValue::GetJSDValue (JSDValue **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = mValue;
return NS_OK;
}
NS_IMETHODIMP
jsdValue::GetIsNative (PRBool *_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = JSD_IsValueNative (mCx, mValue);
return NS_OK;
}
NS_IMETHODIMP
jsdValue::GetIsNumber (PRBool *_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = JSD_IsValueNumber (mCx, mValue);
return NS_OK;
}
NS_IMETHODIMP
jsdValue::GetIsPrimitive (PRBool *_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = JSD_IsValuePrimitive (mCx, mValue);
return NS_OK;
}
NS_IMETHODIMP
jsdValue::GetJsType (PRUint32 *_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
/* XXX surely this can be done better. */
if (JSD_IsValueDouble(mCx, mValue))
*_rval = TYPE_DOUBLE;
else if (JSD_IsValueInt(mCx, mValue))
*_rval = TYPE_INT;
else if (JSD_IsValueFunction(mCx, mValue))
*_rval = TYPE_FUNCTION;
else if (JSD_IsValueNull(mCx, mValue))
*_rval = TYPE_NULL;
else if (JSD_IsValueObject(mCx, mValue))
*_rval = TYPE_OBJECT;
else if (JSD_IsValueString(mCx, mValue))
*_rval = TYPE_STRING;
else if (JSD_IsValueVoid(mCx, mValue))
*_rval = TYPE_VOID;
else
*_rval = TYPE_UNKNOWN;
return NS_OK;
}
NS_IMETHODIMP
jsdValue::GetJsPrototype (jsdIValue **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSDValue *jsdv = JSD_GetValuePrototype (mCx, mValue);
*_rval = jsdValue::FromPtr (mCx, jsdv);
return NS_OK;
}
NS_IMETHODIMP
jsdValue::GetJsParent (jsdIValue **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSDValue *jsdv = JSD_GetValueParent (mCx, mValue);
*_rval = jsdValue::FromPtr (mCx, jsdv);
return NS_OK;
}
NS_IMETHODIMP
jsdValue::GetJsClassName(char **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = nsCString(JSD_GetValueClassName(mCx, mValue)).ToNewCString();
return NS_OK;
}
NS_IMETHODIMP
jsdValue::GetJsConstructor (jsdIValue **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSDValue *jsdv = JSD_GetValueConstructor (mCx, mValue);
*_rval = jsdValue::FromPtr (mCx, jsdv);
return NS_OK;
}
NS_IMETHODIMP
jsdValue::GetJsFunctionName(char **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = nsCString(JSD_GetValueFunctionName(mCx, mValue)).ToNewCString();
return NS_OK;
}
NS_IMETHODIMP
jsdValue::GetBooleanValue(PRBool *_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = JSD_GetValueBoolean (mCx, mValue);
return NS_OK;
}
NS_IMETHODIMP
jsdValue::GetDoubleValue(double *_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
_rval = JSD_GetValueDouble (mCx, mValue);
return NS_OK;
}
NS_IMETHODIMP
jsdValue::GetIntValue(PRInt32 *_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = JSD_GetValueInt (mCx, mValue);
return NS_OK;
}
NS_IMETHODIMP
jsdValue::GetObjectValue(jsdIObject **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSDObject *obj;
obj = JSD_GetObjectForValue (mCx, mValue);
*_rval = jsdObject::FromPtr (mCx, obj);
return NS_OK;
}
NS_IMETHODIMP
jsdValue::GetStringValue(char **_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
JSString *jstr_val = JSD_GetValueString(mCx, mValue);
*_rval = nsCString(JS_GetStringBytes(jstr_val)).ToNewCString();
return NS_OK;
}
NS_IMETHODIMP
jsdValue::GetPropertyCount (PRUint32 *_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
*_rval = JSD_GetCountOfProperties (mCx, mValue);
return NS_OK;
}
NS_IMETHODIMP
jsdValue::GetProperties (jsdIProperty ***propArray, PRUint32 *length)
{
if (!propArray)
return NS_ERROR_NULL_POINTER;
jsdIProperty **pa_temp;
PRUint32 prop_count = JSD_GetCountOfProperties (mCx, mValue);
pa_temp = NS_STATIC_CAST(jsdIProperty **,
nsMemory::Alloc(sizeof (jsdIProperty *) *
prop_count));
PRUint32 i = 0;
JSDProperty *iter = NULL;
JSDProperty *prop;
while ((prop = JSD_IterateProperties (mCx, mValue, &iter))) {
pa_temp[i] = jsdProperty::FromPtr (mCx, prop);
++i;
}
NS_ASSERTION (prop_count == i, "property count mismatch");
/* if caller doesn't care about length, don't bother telling them */
*propArray = pa_temp;
if (length)
*length = prop_count;
return NS_OK;
}
NS_IMETHODIMP
jsdValue::GetProperty (const char *name, jsdIProperty **_rval)
{
JSContext *cx = JSD_GetDefaultJSContext (mCx);
/* not rooting this */
JSString *jstr_name = JS_NewStringCopyZ (cx, name);
JSDProperty *prop = JSD_GetValueProperty (mCx, mValue, jstr_name);
*_rval = jsdProperty::FromPtr (mCx, prop);
return NS_OK;
}
NS_IMETHODIMP
jsdValue::Refresh()
{
JSD_RefreshValue (mCx, mValue);
return NS_OK;
}
/******************************************************************************
* debugger service implementation
******************************************************************************/
NS_IMPL_THREADSAFE_ISUPPORTS1(jsdService, jsdIDebuggerService);
jsdService::jsdService() : mOn(PR_FALSE), mNestedLoopLevel(0), mCx(0),
mBreakpointHook(0), mDebugBreakHook(0),
mDebuggerHook(0), mInterruptHook(0), mScriptHook(0)
{
NS_INIT_ISUPPORTS();
}
NS_IMETHODIMP
jsdService::On (void)
{
nsresult rv;
/* get JS things from the CallContext */
nsCOMPtr<nsIXPConnect> xpc = do_GetService(nsIXPConnect::GetCID());
if (!xpc) return NS_ERROR_FAILURE;
nsCOMPtr<nsIXPCNativeCallContext> cc;
rv = xpc->GetCurrentNativeCallContext(getter_AddRefs(cc));
if (NS_FAILED(rv)) return NS_ERROR_FAILURE;
JSContext *cx;
rv = cc->GetJSContext (&cx);
if (NS_FAILED(rv)) return NS_ERROR_FAILURE;
JSRuntime *rt = JS_GetRuntime (cx);
if (gLastGCProc == jsds_GCCallbackProc)
/* condition indicates that the callback proc has not been set yet */
gLastGCProc = JS_SetGCCallbackRT (rt, jsds_GCCallbackProc);
mCx = JSD_DebuggerOnForUser (rt, NULL, NULL);
if (!mCx)
return NS_ERROR_FAILURE;
mOn = PR_TRUE;
return NS_OK;
}
NS_IMETHODIMP
jsdService::Off (void)
{
JSD_DebuggerOff (mCx);
mOn = PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP
jsdService::ClearAllBreakpoints (void)
{
JSD_ClearAllExecutionHooks (mCx);
return NS_OK;
}
NS_IMETHODIMP
jsdService::EnterNestedEventLoop (PRUint32 *_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIAppShell> appShell(do_CreateInstance(kAppShellCID));
NS_ENSURE_TRUE(appShell, NS_ERROR_FAILURE);
appShell->Create(0, nsnull);
appShell->Spinup();
// Store locally so it doesn't die on us
nsCOMPtr<nsIJSContextStack>
stack(do_GetService("@mozilla.org/js/xpc/ContextStack;1"));
nsresult rv = NS_OK;
PRUint32 nestLevel = ++mNestedLoopLevel;
if(stack && NS_SUCCEEDED(stack->Push(nsnull)))
{
while(NS_SUCCEEDED(rv) && mNestedLoopLevel >= nestLevel)
{
void* data;
PRBool isRealEvent;
//PRBool processEvent;
rv = appShell->GetNativeEvent(isRealEvent, data);
if(NS_SUCCEEDED(rv))
{
appShell->DispatchNativeEvent(isRealEvent, data);
}
}
JSContext* cx;
stack->Pop(&cx);
NS_ASSERTION(cx == nsnull, "JSContextStack mismatch");
}
else
rv = NS_ERROR_FAILURE;
appShell->Spindown();
NS_ASSERTION (mNestedLoopLevel <= nestLevel,
"nested event didn't unwind properly");
if (mNestedLoopLevel == nestLevel)
--mNestedLoopLevel;
*_rval = mNestedLoopLevel;
return rv;
}
NS_IMETHODIMP
jsdService::ExitNestedEventLoop (PRUint32 *_rval)
{
if (!_rval)
return NS_ERROR_NULL_POINTER;
if (mNestedLoopLevel > 0)
--mNestedLoopLevel;
else
return NS_ERROR_FAILURE;
*_rval = mNestedLoopLevel;
return NS_OK;
}
/* hook attribute get/set functions */
NS_IMETHODIMP
jsdService::SetBreakpointHook (jsdIExecutionHook *aHook)
{
mBreakpointHook = aHook;
return NS_OK;
}
NS_IMETHODIMP
jsdService::GetBreakpointHook (jsdIExecutionHook **aHook)
{
if (!aHook)
return NS_ERROR_NULL_POINTER;
*aHook = mBreakpointHook;
NS_IF_ADDREF(*aHook);
return NS_OK;
}
NS_IMETHODIMP
jsdService::SetDebugBreakHook (jsdIExecutionHook *aHook)
{
mDebugBreakHook = aHook;
if (aHook)
JSD_SetDebugBreakHook (mCx, jsds_ExecutionHookProc,
NS_STATIC_CAST(void *, aHook));
else
JSD_ClearDebugBreakHook (mCx);
return NS_OK;
}
NS_IMETHODIMP
jsdService::GetDebugBreakHook (jsdIExecutionHook **aHook)
{
if (!aHook)
return NS_ERROR_NULL_POINTER;
*aHook = mDebugBreakHook;
NS_IF_ADDREF(*aHook);
return NS_OK;
}
NS_IMETHODIMP
jsdService::SetDebuggerHook (jsdIExecutionHook *aHook)
{
mDebuggerHook = aHook;
if (aHook)
JSD_SetDebuggerHook (mCx, jsds_ExecutionHookProc,
NS_STATIC_CAST(void *, aHook));
else
JSD_ClearDebuggerHook (mCx);
return NS_OK;
}
NS_IMETHODIMP
jsdService::GetDebuggerHook (jsdIExecutionHook **aHook)
{
if (!aHook)
return NS_ERROR_NULL_POINTER;
*aHook = mDebuggerHook;
NS_IF_ADDREF(*aHook);
return NS_OK;
}
NS_IMETHODIMP
jsdService::SetInterruptHook (jsdIExecutionHook *aHook)
{
mInterruptHook = aHook;
if (aHook)
JSD_SetInterruptHook (mCx, jsds_ExecutionHookProc,
NS_STATIC_CAST(void *, aHook));
else
JSD_ClearInterruptHook (mCx);
return NS_OK;
}
NS_IMETHODIMP
jsdService::GetInterruptHook (jsdIExecutionHook **aHook)
{
if (!aHook)
return NS_ERROR_NULL_POINTER;
*aHook = mInterruptHook;
NS_IF_ADDREF(*aHook);
return NS_OK;
}
NS_IMETHODIMP
jsdService::SetScriptHook (jsdIScriptHook *aHook)
{
mScriptHook = aHook;
if (aHook)
JSD_SetScriptHook (mCx, jsds_ScriptHookProc, NULL);
else
JSD_SetScriptHook (mCx, NULL, NULL);
return NS_OK;
}
NS_IMETHODIMP
jsdService::GetScriptHook (jsdIScriptHook **aHook)
{
if (!aHook)
return NS_ERROR_NULL_POINTER;
*aHook = mScriptHook;
NS_IF_ADDREF(*aHook);
return NS_OK;
}
jsdService *
jsdService::GetService ()
{
if (!gJsds)
gJsds = new jsdService();
NS_IF_ADDREF(gJsds);
return gJsds;
}
NS_GENERIC_FACTORY_SINGLETON_CONSTRUCTOR(jsdService, jsdService::GetService);
static nsModuleComponentInfo components[] = {
{"JSDService", JSDSERVICE_CID, jsdServiceContractID, jsdServiceConstructor}
};
NS_IMPL_NSGETMODULE("JavaScript Debugger", components);
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