/*
 * Variables that are part of the [apply] command implementation and which
 * have to be passed to the other side of the NRE call.
 */

typedef struct {
    int isRootEnsemble;
    Command cmd;
    ExtraFrameInfo efi;
} ApplyExtraData;

/*
 * Prototypes for static functions in this file
 */

    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    Interp *iPtr = (Interp *) interp;
    Proc *procPtr = NULL;
    Tcl_Obj *lambdaPtr, *nsObjPtr;
    int result, isRootEnsemble;
    Tcl_Namespace *nsPtr;
    ApplyExtraData *extraPtr;

    if (objc < 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "lambdaExpr ?arg ...?");
	return TCL_ERROR;
    }

    extraPtr->efi.length = 1;
    extraPtr->efi.fields[0].name = "lambda";
    extraPtr->efi.fields[0].proc = NULL;
    extraPtr->efi.fields[0].clientData = lambdaPtr;
    extraPtr->cmd.clientData = &extraPtr->efi;

    isRootEnsemble = (iPtr->ensembleRewrite.sourceObjs == NULL);
    if (isRootEnsemble) {
	iPtr->ensembleRewrite.sourceObjs = objv;
	iPtr->ensembleRewrite.numRemovedObjs = 1;
	iPtr->ensembleRewrite.numInsertedObjs = 0;
    } else {
	iPtr->ensembleRewrite.numInsertedObjs -= 1;
    }
    extraPtr->isRootEnsemble = isRootEnsemble;

    result = TclPushProcCallFrame(procPtr, interp, objc, objv, 1);
    if (result == TCL_OK) {
	TclNRAddCallback(interp, ApplyNR2, extraPtr, NULL, NULL, NULL);
	result = TclNRInterpProcCore(interp, objv[1], 2, &MakeLambdaError);
    }
    return result;
}

static int
ApplyNR2(
    ClientData data[],
    Tcl_Interp *interp,
    int result)
{
    ApplyExtraData *extraPtr = data[0];

    if (extraPtr->isRootEnsemble) {
	((Interp *) interp)->ensembleRewrite.sourceObjs = NULL;
    }

    TclStackFree(interp, extraPtr);
    return result;
}

/*
 *----------------------------------------------------------------------
 *