Package org.perl6.nqp.sixmodel.reprs

Examples of org.perl6.nqp.sixmodel.reprs.VMExceptionInstance

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        /* We create a KnowHOW instance that can describe itself. This means
         * (once we tie the knot) that .HOW.HOW.HOW.HOW etc will always return
         * that, which closes the model up. */
        STable st = new STable(REPR, null);
        st.WHAT = knowhow;
        KnowHOWREPRInstance knowhow_how = (KnowHOWREPRInstance)REPR.allocate(tc, st);
        st.HOW = knowhow_how;
        knowhow_how.st = st;
       
        /* Add various methods to the KnowHOW's HOW. */
        knowhow_how.methods.put("new_type", knowhowUnit.lookupCodeRef("new_type"));
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    }

    private static void bootstrapKnowHOWAttribute(ThreadContext tc, CompilationUnit knowhowUnit) {       
        /* Create meta-object. */
        SixModelObject knowhow_how = tc.gc.KnowHOW.st.HOW;
        KnowHOWREPRInstance meta_obj = (KnowHOWREPRInstance)knowhow_how.st.REPR.allocate(tc, knowhow_how.st);
       
        /* Add methods. */
        meta_obj.methods.put("new", knowhowUnit.lookupCodeRef("attr_new"));
        meta_obj.methods.put("compose", knowhowUnit.lookupCodeRef("attr_compose"));
        meta_obj.methods.put("name", knowhowUnit.lookupCodeRef("attr_name"));
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        tc.gc.KnowHOWAttribute = type_obj;
    }
   
    private static SixModelObject bootType(ThreadContext tc, String typeName, String reprName) {
        SixModelObject knowhow_how = tc.gc.KnowHOW.st.HOW;
        KnowHOWREPRInstance meta_obj = (KnowHOWREPRInstance)knowhow_how.st.REPR.allocate(tc, knowhow_how.st);
        meta_obj.name = typeName;
        REPR repr = REPRRegistry.getByName(reprName);
        SixModelObject type_obj = repr.type_object_for(tc, meta_obj);
        type_obj.st.MethodCache = meta_obj.methods;
        type_obj.st.ModeFlags = STable.METHOD_CACHE_AUTHORITATIVE;
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    /* Exception related. */
    public static void die_s_c(String msg, ThreadContext tc) {
        // Construct exception object.
        SixModelObject exType = tc.curFrame.codeRef.staticInfo.compUnit.hllConfig.exceptionType;
        VMExceptionInstance exObj = (VMExceptionInstance)exType.st.REPR.allocate(tc, exType.st);
        exObj.message = msg;
        exObj.category = ExceptionHandling.EX_CAT_CATCH;
        exObj.origin = tc.curFrame;
        exObj.nativeTrace = (new Throwable()).getStackTrace();
        ExceptionHandling.handlerDynamic(tc, ExceptionHandling.EX_CAT_CATCH, true, exObj);
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            throw ExceptionHandling.dieInternal(tc, "backtrace needs an object with VMException representation");
        }
    }
    public static void _throw_c(SixModelObject obj, ThreadContext tc) {
        if (obj instanceof VMExceptionInstance) {
            VMExceptionInstance ex = (VMExceptionInstance)obj;
            ex.origin = tc.curFrame;
            ex.nativeTrace = (new Throwable()).getStackTrace();
            ExceptionHandling.handlerDynamic(tc, ex.category, false, ex);
        }
        else {
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            return;

        if (uwex instanceof UnwindException) {
            if (uwex.payload.hashCode() == where.hashCode())
                return;
            VMExceptionInstance vmex = (VMExceptionInstance)newexception(tc);
            /* We're moving to the outside so we do not rethrow to us. */
            vmex.category = uwex.category;
            vmex.payload = uwex.payload;
            tc.curFrame.curHandler = outerHandler;
            ExceptionHandling.handlerDynamic(tc, vmex.category, false, vmex);
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        if ((uwex.category & ExceptionHandling.EX_CAT_LABELED) == 0)
            return;

        if (uwex instanceof UnwindException) {
            /* We're moving to the outside so we do not rethrow to us. */
            VMExceptionInstance vmex = (VMExceptionInstance)newexception(tc);
            vmex.category = uwex.category;
            vmex.payload = uwex.payload;
            tc.curFrame.curHandler = outerHandler;
            ExceptionHandling.handlerDynamic(tc, vmex.category, false, vmex);
        }
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            throw ExceptionHandling.dieInternal(tc, "_is_same_label needs an object with UnwindException representation");
        }
    }
    public static void rethrow_c(SixModelObject obj, ThreadContext tc) {
        if (obj instanceof VMExceptionInstance) {
            VMExceptionInstance ex = (VMExceptionInstance)obj;
            ExceptionHandling.handlerDynamic(tc, ex.category, false, ex);
        }
        else {
            throw ExceptionHandling.dieInternal(tc, "rethrow needs an object with VMException representation");
        }
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     * handler model. Note the exception is not resumable. */
    private static RuntimeException stooge = new RuntimeException("Stooge exception leaked");
    private static ThreadDeath death = new ThreadDeath();
    private static RuntimeException dieInternal(ThreadContext tc, String msg, Throwable t) {
        SixModelObject exType;
        VMExceptionInstance exObj;
        if (tc.gc.noisyExceptions) {
            if (t == null) t = new Throwable(msg);
            t.printStackTrace();
        }
        try {
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        if (exObj != null && exObj.message != null)
            message.append("Unhandled exception: " + exObj.message + "\n");
        else
            message.append("Unhandled exception; category = " + category + "\n");

        exObj = new VMExceptionInstance();
        exObj.origin = tc.curFrame;
        exObj.nativeTrace = (new Throwable()).getStackTrace();

        for (String line : backtraceStrings(exObj)) {
            message.append(line);
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