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C++ JSContext::clearPendingException方法代码示例

本文整理汇总了C++中JSContext::clearPendingException方法的典型用法代码示例。如果您正苦于以下问题:C++ JSContext::clearPendingException方法的具体用法?C++ JSContext::clearPendingException怎么用?C++ JSContext::clearPendingException使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在JSContext的用法示例。


在下文中一共展示了JSContext::clearPendingException方法的8个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: Atomize

JSAtom*
FrameIterator::functionDisplayAtom() const
{
    MOZ_ASSERT(!done());

    JSContext* cx = activation_->cx();

    if (missingFrameMessage_) {
        const char* msg = "asm.js/wasm frames may be missing; enable the profiler before running "
                          "to see all frames";
        JSAtom* atom = Atomize(cx, msg, strlen(msg));
        if (!atom) {
            cx->clearPendingException();
            return cx->names().empty;
        }

        return atom;
    }

    MOZ_ASSERT(codeRange_);

    JSAtom* atom = code_->getFuncDefAtom(cx, codeRange_->funcDefIndex());
    if (!atom) {
        cx->clearPendingException();
        return cx->names().empty;
    }

    return atom;
}
开发者ID:MichaelKohler,项目名称:gecko-dev,代码行数:29,代码来源:WasmFrameIterator.cpp

示例2: exc

ErrorCopier::~ErrorCopier()
{
    JSContext *cx = ac.ref().context();
    if (ac.ref().origin() != cx->compartment && cx->isExceptionPending()) {
        RootedValue exc(cx, cx->getPendingException());
        if (exc.isObject() && exc.toObject().isError() && exc.toObject().getPrivate()) {
            cx->clearPendingException();
            ac.destroy();
            Rooted<JSObject*> errObj(cx, &exc.toObject());
            JSObject *copyobj = js_CopyErrorObject(cx, errObj, scope);
            if (copyobj)
                cx->setPendingException(ObjectValue(*copyobj));
        }
    }
}
开发者ID:RickEyre,项目名称:mozilla-central,代码行数:15,代码来源:jswrapper.cpp

示例3: exc

ErrorCopier::~ErrorCopier()
{
    JSContext* cx = ac->context()->asJSContext();
    if (ac->origin() != cx->compartment() && cx->isExceptionPending()) {
        RootedValue exc(cx);
        if (cx->getPendingException(&exc) && exc.isObject() && exc.toObject().is<ErrorObject>()) {
            cx->clearPendingException();
            ac.reset();
            Rooted<ErrorObject*> errObj(cx, &exc.toObject().as<ErrorObject>());
            JSObject* copyobj = CopyErrorObject(cx, errObj);
            if (copyobj)
                cx->setPendingException(ObjectValue(*copyobj));
        }
    }
}
开发者ID:logicoftekk,项目名称:cyberfox,代码行数:15,代码来源:Wrapper.cpp

示例4:

ErrorCopier::~ErrorCopier()
{
    JSContext *cx = ac.context;
    if (cx->compartment == ac.destination &&
        ac.origin != ac.destination &&
        cx->isExceptionPending())
    {
        Value exc = cx->getPendingException();
        if (exc.isObject() && exc.toObject().isError() && exc.toObject().getPrivate()) {
            cx->clearPendingException();
            ac.leave();
            JSObject *copyobj = js_CopyErrorObject(cx, &exc.toObject(), scope);
            if (copyobj)
                cx->setPendingException(ObjectValue(*copyobj));
        }
    }
}
开发者ID:krellian,项目名称:mozilla-central,代码行数:17,代码来源:jswrapper.cpp

示例5: exc

ErrorCopier::~ErrorCopier()
{
    JSContext* cx = ac->context();

    // The provenance of Debugger.DebuggeeWouldRun is the topmost locking
    // debugger compartment; it should not be copied around.
    if (ac->origin() != cx->compartment() &&
        cx->isExceptionPending() &&
        !cx->isThrowingDebuggeeWouldRun())
    {
        RootedValue exc(cx);
        if (cx->getPendingException(&exc) && exc.isObject() && exc.toObject().is<ErrorObject>()) {
            cx->clearPendingException();
            ac.reset();
            Rooted<ErrorObject*> errObj(cx, &exc.toObject().as<ErrorObject>());
            JSObject* copyobj = CopyErrorObject(cx, errObj);
            if (copyobj)
                cx->setPendingException(ObjectValue(*copyobj));
        }
    }
}
开发者ID:,项目名称:,代码行数:21,代码来源:

示例6: fscript

extern "C" void *
js_InternalThrow(VMFrame &f)
{
    JSContext *cx = f.cx;

    ExpandInlineFrames(cx->compartment);

    // The current frame may have an associated orphaned native, if the native
    // or SplatApplyArgs threw an exception.
    RemoveOrphanedNative(cx, f.fp());

    JS_ASSERT(!f.fp()->finishedInInterpreter());

    // Make sure sp is up to date.
    JS_ASSERT(&cx->regs() == &f.regs);

    jsbytecode *pc = NULL;
    for (;;) {
        if (cx->isExceptionPending()) {
            // Call the throw hook if necessary
            JSThrowHook handler = cx->runtime->debugHooks.throwHook;
            if (handler || !cx->compartment->getDebuggees().empty()) {
                Value rval;
                JSTrapStatus st = Debugger::onExceptionUnwind(cx, &rval);
                if (st == JSTRAP_CONTINUE && handler) {
                    RootedScript fscript(cx, cx->fp()->script());
                    st = handler(cx, fscript, cx->regs().pc, &rval,
                                 cx->runtime->debugHooks.throwHookData);
                }

                switch (st) {
                case JSTRAP_ERROR:
                    cx->clearPendingException();
                    break;

                case JSTRAP_CONTINUE:
                    break;

                case JSTRAP_RETURN:
                    cx->clearPendingException();
                    cx->fp()->setReturnValue(rval);
                    return cx->jaegerRuntime().forceReturnFromExternC();

                case JSTRAP_THROW:
                    cx->setPendingException(rval);
                    break;

                default:
                    JS_NOT_REACHED("bad onExceptionUnwind status");
                }
            }
        }

        pc = FindExceptionHandler(cx);
        if (pc)
            break;

        // The JIT guarantees that ScriptDebugEpilogue() and ScriptEpilogue()
        // have always been run upon exiting to its caller. This is important
        // for consistency, where execution modes make similar guarantees about
        // prologues and epilogues. Interpret(), and Invoke() all rely on this
        // property.
        JS_ASSERT(!f.fp()->finishedInInterpreter());
        UnwindScope(cx, 0);
        f.regs.setToEndOfScript();

        if (cx->compartment->debugMode()) {
            // This can turn a throw or error into a healthy return. Note that
            // we will run ScriptDebugEpilogue again (from AnyFrameEpilogue);
            // ScriptDebugEpilogue is prepared for this eventuality.
            if (js::ScriptDebugEpilogue(cx, f.fp(), false))
                return cx->jaegerRuntime().forceReturnFromExternC();
        }


        f.fp()->epilogue(f.cx);

        // Don't remove the last frame, this is the responsibility of
        // JaegerShot()'s caller. We only guarantee that ScriptEpilogue()
        // has been run.
        if (f.entryfp == f.fp())
            break;

        f.cx->stack.popInlineFrame(f.regs);
        DebugOnly<JSOp> op = JSOp(*f.regs.pc);
        JS_ASSERT(op == JSOP_CALL ||
                  op == JSOP_NEW ||
                  op == JSOP_EVAL ||
                  op == JSOP_FUNCALL ||
                  op == JSOP_FUNAPPLY);
        f.regs.pc += JSOP_CALL_LENGTH;
    }

    JS_ASSERT(&cx->regs() == &f.regs);

    if (!pc)
        return NULL;

    StackFrame *fp = cx->fp();
    RootedScript script(cx, fp->script());
//.........这里部分代码省略.........
开发者ID:IcepOwer,项目名称:Spidermonkey,代码行数:101,代码来源:InvokeHelpers.cpp

示例7: JS_FUNC_TO_DATA_PTR

extern "C" void *
js_InternalThrow(VMFrame &f)
{
    JSContext *cx = f.cx;

    // It's possible that from within RunTracer(), Interpret() returned with
    // an error and finished the frame (i.e., called ScriptEpilogue), but has
    // not yet performed an inline return.
    //
    // In this case, RunTracer() has no choice but to propagate the error
    // up to the method JIT, and thus to this function. But ScriptEpilogue()
    // has already been called. Detect this, and avoid double-finishing the
    // frame. See HandleErrorInExcessFrame() and bug 624100.
    if (f.fp()->finishedInInterpreter()) {
        // If it's the last frame, just propagate the failure up again.
        if (f.fp() == f.entryfp)
            return NULL;

        InlineReturn(f);
    }

    // Make sure sp is up to date.
    JS_ASSERT(cx->regs == &f.regs);

    // Call the throw hook if necessary
    JSThrowHook handler = f.cx->debugHooks->throwHook;
    if (handler) {
        Value rval;
        switch (handler(cx, cx->fp()->script(), cx->regs->pc, Jsvalify(&rval),
                        cx->debugHooks->throwHookData)) {
          case JSTRAP_ERROR:
            cx->clearPendingException();
            return NULL;

          case JSTRAP_RETURN:
            cx->clearPendingException();
            cx->fp()->setReturnValue(rval);
            return JS_FUNC_TO_DATA_PTR(void *,
                   cx->jaegerCompartment()->forceReturnTrampoline());

          case JSTRAP_THROW:
            cx->setPendingException(rval);
            break;

          default:
            break;
        }
    }

    jsbytecode *pc = NULL;
    for (;;) {
        pc = FindExceptionHandler(cx);
        if (pc)
            break;

        // The JIT guarantees that ScriptEpilogue() has always been run
        // upon exiting to its caller. This is important for consistency,
        // where execution modes make similar guarantees about prologues
        // and epilogues. RunTracer(), Interpret(), and Invoke() all
        // rely on this property.
        JS_ASSERT(!f.fp()->finishedInInterpreter());
        js_UnwindScope(cx, 0, cx->isExceptionPending());
        ScriptEpilogue(f.cx, f.fp(), false);

        // Don't remove the last frame, this is the responsibility of
        // JaegerShot()'s caller. We only guarantee that ScriptEpilogue()
        // has been run.
        if (f.entryfp == f.fp())
            break;

        JS_ASSERT(f.regs.sp == cx->regs->sp);
        InlineReturn(f);
    }

    JS_ASSERT(f.regs.sp == cx->regs->sp);

    if (!pc)
        return NULL;

    JSStackFrame *fp = cx->fp();
    JSScript *script = fp->script();
    return script->nativeCodeForPC(fp->isConstructing(), pc);
}
开发者ID:LittleForker,项目名称:mozilla-central,代码行数:83,代码来源:InvokeHelpers.cpp

示例8: enter

extern "C" void *
js_InternalThrow(VMFrame &f)
{
    JSContext *cx = f.cx;

    ExpandInlineFrames(cx->compartment);

    // The current frame may have an associated orphaned native, if the native
    // or SplatApplyArgs threw an exception.
    RemoveOrphanedNative(cx, f.fp());

    JS_ASSERT(!f.fp()->finishedInInterpreter());

    // Make sure sp is up to date.
    JS_ASSERT(&cx->regs() == &f.regs);

    jsbytecode *pc = NULL;
    for (;;) {
        if (cx->isExceptionPending()) {
            // Call the throw hook if necessary
            JSThrowHook handler = cx->debugHooks->throwHook;
            if (handler || !cx->compartment->getDebuggees().empty()) {
                Value rval;
                JSTrapStatus st = Debugger::onExceptionUnwind(cx, &rval);
                if (st == JSTRAP_CONTINUE && handler) {
                    st = handler(cx, cx->fp()->script(), cx->regs().pc, &rval,
                                 cx->debugHooks->throwHookData);
                }

                switch (st) {
                case JSTRAP_ERROR:
                    cx->clearPendingException();
                    return NULL;

                case JSTRAP_CONTINUE:
                  break;

                case JSTRAP_RETURN:
                    cx->clearPendingException();
                    cx->fp()->setReturnValue(rval);
                    return cx->jaegerCompartment()->forceReturnFromExternC();

                case JSTRAP_THROW:
                    cx->setPendingException(rval);
                    break;

                default:
                    JS_NOT_REACHED("bad onExceptionUnwind status");
                }
            }
        }

        pc = FindExceptionHandler(cx);
        if (pc)
            break;

        // The JIT guarantees that ScriptEpilogue() has always been run
        // upon exiting to its caller. This is important for consistency,
        // where execution modes make similar guarantees about prologues
        // and epilogues. RunTracer(), Interpret(), and Invoke() all
        // rely on this property.
        JS_ASSERT(!f.fp()->finishedInInterpreter());
        UnwindScope(cx, 0, cx->isExceptionPending());

        if (cx->compartment->debugMode())
            js::ScriptDebugEpilogue(cx, f.fp(), false);

        ScriptEpilogue(f.cx, f.fp(), false);

        // Don't remove the last frame, this is the responsibility of
        // JaegerShot()'s caller. We only guarantee that ScriptEpilogue()
        // has been run.
        if (f.entryfp == f.fp())
            break;

        JS_ASSERT(f.regs.sp == cx->regs().sp);
        InlineReturn(f);
    }

    JS_ASSERT(f.regs.sp == cx->regs().sp);

    if (!pc)
        return NULL;

    StackFrame *fp = cx->fp();
    JSScript *script = fp->script();

    /*
     * Fall back to EnterMethodJIT and finish the frame in the interpreter.
     * With type inference enabled, we may wipe out all JIT code on the
     * stack without patching ncode values to jump to the interpreter, and
     * thus can only enter JIT code via EnterMethodJIT (which overwrites
     * its entry frame's ncode). See ClearAllFrames.
     */
    cx->compartment->jaegerCompartment()->setLastUnfinished(Jaeger_Unfinished);

    if (!script->ensureRanAnalysis(cx, NULL)) {
        js_ReportOutOfMemory(cx);
        return NULL;
    }
//.........这里部分代码省略.........
开发者ID:vingtetun,项目名称:mozilla-central,代码行数:101,代码来源:InvokeHelpers.cpp


注:本文中的JSContext::clearPendingException方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。