/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
 * Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
 *                         University Research and Technology
 *                         Corporation.  All rights reserved.
 * Copyright (c) 2004-2006 The University of Tennessee and The University
 *                         of Tennessee Research Foundation.  All rights
 *                         reserved.
 * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart, 
 *                         University of Stuttgart.  All rights reserved.
 * Copyright (c) 2004-2005 The Regents of the University of California.
 *                         All rights reserved.
 * Copyright (c) 2008      Cisco Systems, Inc.  All rights reserved.
 * Copyright (c) 2012      Los Alamos National Security, LLC. All rights
 *                         reserved.
 * $COPYRIGHT$
 * 
 * Additional copyrights may follow
 * 
 * $HEADER$
 */

/** 
 * @file 
 *
 * This is the private declarations for the MCA parameter system.
 * This file is internal to the MCA parameter system and should not
 * need to be used by any other elements in Open MPI except the
 * special case of the ompi_info command.
 *
 * All the rest of the doxygen documentation in this file is marked as
 * "internal" and won't show up unless you specifically tell doxygen
 * to generate internal documentation (by default, it is skipped).
 */

#ifndef OPAL_MCA_BASE_VAR_INTERNAL_H
#define OPAL_MCA_BASE_VAR_INTERNAL_H

#include "opal_config.h"

#include "opal/class/opal_object.h"
#include "opal/class/opal_list.h"
#include "opal/class/opal_value_array.h"
#include "opal/mca/base/mca_base_var.h"

BEGIN_C_DECLS

/* Internal flags start at bit 16 */
#define MCA_BASE_VAR_FLAG_EXTERNAL_MASK 0x0000ffff

typedef enum {
    /** Variable is valid */
    MCA_BASE_VAR_FLAG_VALID   = 0x00010000,
    /** Variable is a synonym */
    MCA_BASE_VAR_FLAG_SYNONYM = 0x00020000,
    /** mbv_source_file needs to be freed */
    MCA_BASE_VAR_FLAG_SOURCE_FILE_NEEDS_FREE = 0x00040000
} mca_base_var_flag_internal_t;

#define VAR_FLAG_ISSET(var, flag) (!!((var).mbp_flags & (flag)))

#define VAR_IS_VALID(var) (!!((var).mbv_flags & MCA_BASE_VAR_FLAG_VALID))
#define VAR_IS_SYNONYM(var) (!!((var).mbv_flags & MCA_BASE_VAR_FLAG_SYNONYM))
#define VAR_IS_INTERNAL(var) (!!((var).mbv_flags & MCA_BASE_VAR_FLAG_INTERNAL))
#define VAR_IS_DEFAULT_ONLY(var) (!!((var).mbv_flags & MCA_BASE_VAR_FLAG_DEFAULT_ONLY))
#define VAR_IS_SETTABLE(var) (!!((var).mbv_flags & MCA_BASE_VAR_FLAG_SETTABLE))
#define VAR_IS_DEPRECATED(var) (!!((var).mbv_flags & MCA_BASE_VAR_FLAG_DEPRECATED))


/**
 * \internal
 *
 * Structure for holding param names and values read in from files.
 */
struct mca_base_var_file_value_t {
    /** Allow this to be an OPAL OBJ */
    opal_list_item_t super;
    
    /** Parameter name */
    char *mbvfv_var;
    /** Parameter value */
    char *mbvfv_value;
    /** File it came from */
    char *mbvfv_file;
};
/**
 * \internal
 *
 * Convenience typedef
 */
typedef struct mca_base_var_file_value_t mca_base_var_file_value_t;

/**
 * Object declaration for mca_base_var_file_value_t
 */
OPAL_DECLSPEC OBJ_CLASS_DECLARATION(mca_base_var_file_value_t);


/**
 * \internal
 *
 * Parse a parameter file.
 */
OPAL_DECLSPEC int mca_base_parse_paramfile(const char *paramfile, opal_list_t *list);

END_C_DECLS
    
#endif /* OPAL_MCA_BASE_VAR_INTERNAL_H */