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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* Copyright by the Board of Trustees of the University of Illinois. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the files COPYING and Copyright.html. COPYING can be found at the root *
* of the source code distribution tree; Copyright.html can be found at the *
* root level of an installed copy of the electronic HDF5 document set and *
* is linked from the top-level documents page. It can also be found at *
* http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Module Info: This module contains most of the "core" functionality of
* the H5T interface, including the API initialization code, etc.
* Many routines that are infrequently used, or are specialized for
* one particular datatype class are in another module.
*/
/*-------------------------------------------------------------------------
*
* Created: H5Tvisit.c
* Jul 19 2007
* Quincey Koziol <koziol@hdfgroup.org>
*
* Purpose: Visit all the components of a datatype
*
*-------------------------------------------------------------------------
*/
/****************/
/* Module Setup */
/****************/
#define H5T_PACKAGE /*suppress error about including H5Tpkg */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5Tpkg.h" /* Datatypes */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Package Typedefs */
/********************/
/********************/
/* Local Prototypes */
/********************/
/*********************/
/* Package Variables */
/*********************/
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/*-------------------------------------------------------------------------
* Function: H5T_visit
*
* Purpose: Visit a datatype and all it's members and/or parents, making
* a callback for each.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Thursday, July 19, 2007
*
*-------------------------------------------------------------------------
*/
herr_t
H5T_visit(H5T_t *dt, unsigned visit_flags, H5T_operator_t op, void *op_value)
{
hbool_t is_complex; /* Flag indicating current datatype is "complex" */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5T_visit, FAIL)
/* Sanity check */
HDassert(dt);
HDassert(op);
/* Check for complex datatype */
is_complex = H5T_IS_COMPLEX(dt->shared->type);
/* If the callback is to be made on the datatype first, do that */
if(is_complex && (visit_flags & H5T_VISIT_COMPLEX_FIRST))
if(op(dt, op_value) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_BADITER, FAIL, "operator callback failed")
/* Make callback for each member/child, if requested */
switch(dt->shared->type) {
case H5T_COMPOUND:
{
unsigned u; /* Local index variable */
/* Visit each member of the compound datatype */
for(u = 0; u < dt->shared->u.compnd.nmembs; u++)
if(H5T_visit(dt->shared->u.compnd.memb[u].type, visit_flags, op, op_value) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_BADITER, FAIL, "can't visit member datatype")
} /* end case */
break;
case H5T_ARRAY:
case H5T_VLEN:
case H5T_ENUM:
/* Visit parent type */
if(H5T_visit(dt->shared->parent, visit_flags, op, op_value) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_BADITER, FAIL, "can't visit parent datatype")
break;
default:
/* Visit "simple" datatypes here */
if(visit_flags & H5T_VISIT_SIMPLE)
if(op(dt, op_value) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_BADITER, FAIL, "operator callback failed")
break;
} /* end switch */
/* If the callback is to be made on the datatype last, do that */
if(is_complex && (visit_flags & H5T_VISIT_COMPLEX_LAST))
if(op(dt, op_value) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_BADITER, FAIL, "operator callback failed")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5T_iterate() */
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