mspdebug/util/vector.h

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/* MSPDebug - debugging tool for MSP430 MCUs
* Copyright (C) 2009, 2010 Daniel Beer
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef VECTOR_H_
#define VECTOR_H_
/* A vector is a flexible array type. It can be used to hold elements of
* any type.
*
* elemsize: size in bytes of each element
* capacity: maximum number of elements that ptr can hold
* size: number of elements currently held
*/
struct vector {
void *ptr;
int elemsize;
int capacity;
int size;
};
/* Create and destroy vectors */
void vector_init(struct vector *v, int elemsize);
void vector_destroy(struct vector *v);
/* Reallocate a vector to the given size. Returns 0 if successful, or -1
* if memory could not be allocated.
*/
int vector_realloc(struct vector *v, int capacity);
/* Append any number of elements to the end of a vector, reallocating if
* necessary. Returns 0 on success or -1 if memory could not be allocated.
*/
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int vector_push(struct vector *v, const void *data, int count);
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/* Remove the last element from a vector. */
void vector_pop(struct vector *v);
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/* Dereference a vector, giving an expression for the element of type t at
* position i in vector v. Use as follows:
*
* struct vector v;
*
* VECTOR_AT(v, 3, int) = 57;
* *VECTOR_PTR(v, 3, int) = 57;
*/
#define VECTOR_AT(v, i, t) (*VECTOR_PTR(v, i, t))
#define VECTOR_PTR(v, i, t) \
((t *)((char *)(v).ptr + (i) * (v).elemsize))
#endif