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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: clib/src/table_iter.c $ */
/* */
/* OpenPOWER FFS Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2014,2015 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
/*
* File: table_iter.c
* Author: Shaun Wetzstein <shaun@us.ibm.com>
* Descr:
* Note:
* Date: 10/22/10
*/
#include <unistd.h>
#include <stdarg.h>
#include <stdlib.h>
#include <malloc.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <limits.h>
#include "assert.h"
#include "misc.h"
#include "table_iter.h"
/* ======================================================================= */
int table_iter_init(table_iter_t * self, table_t * table, uint32_t flags)
{
assert(self != NULL);
assert(table != NULL);
self->flags = flags;
self->table = table;
if (self->flags & TI_FLAG_BWD) {
if (vector_iter_init(&self->it, &table->table, VI_FLAG_BWD) < 0)
return -1;
} else {
if (vector_iter_init(&self->it, &table->table, VI_FLAG_FWD) < 0)
return -1;
}
return vector_iter_inc(&self->it) != NULL;
}
int table_iter_clear(table_iter_t * self)
{
assert(self != NULL);
if (vector_iter_clear(&self->it) < 0)
return -1;
self->table = NULL;
return 0;
}
const value_t *table_iter_elem(table_iter_t * self)
{
assert(self != NULL);
return (value_t *) vector_iter_elem(&self->it);
}
const value_t *table_iter_inc1(table_iter_t * self)
{
return table_iter_inc2(self, 1);
}
const value_t *table_iter_inc2(table_iter_t * self, size_t count)
{
assert(self != NULL);
const value_t *v = NULL;
for (size_t i = 0; i < count; i++) {
if (self->flags & TI_FLAG_BWD) {
v = (value_t *) vector_iter_dec(&self->it); // columns
} else {
v = (value_t *) vector_iter_inc(&self->it); // columns
}
}
return v;
}
const value_t *table_iter_dec1(table_iter_t * self)
{
return table_iter_dec2(self, 1);
}
const value_t *table_iter_dec2(table_iter_t * self, size_t count)
{
assert(self != NULL);
const value_t *v = NULL;
for (size_t i = 0; i < count; i++) {
if (self->flags & TI_FLAG_BWD) {
v = (value_t *) vector_iter_inc(&self->it); // columns
} else {
v = (value_t *) vector_iter_dec(&self->it); // columns
}
}
return v;
}
size_t table_iter_pos1(table_iter_t * self)
{
assert(self != NULL);
return vector_iter_pos(&self->it) + 1;
}
int table_iter_pos2(table_iter_t * self, size_t pos)
{
assert(self != NULL);
assert(pos < table_rows(self->table));
return vector_iter_pos(&self->it, pos + 1);
}
/* ======================================================================= */
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