sexp-manip.h

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/*
 * Copyright 2009 Red Hat Inc., Durham, North Carolina.
 * All Rights Reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software 
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Authors:
 *      Daniel Kopecek <dkopecek@redhat.com>
 */

#pragma once
#ifndef SEXP_MANIP_H
#define SEXP_MANIP_H

#include <stdarg.h>
#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
#include <sexp-types.h>
#include <helpers.h>

#ifdef __cplusplus
extern "C" {
#endif

/*
 * number
 */

SEXP_t *SEXP_number_new (SEXP_numtype_t t, const void *n) __attribute__ ((nonnull (2)));

SEXP_t *SEXP_number_newb (bool n);

SEXP_t *SEXP_number_newi_8 (int8_t n);

SEXP_t *SEXP_number_newu_8 (uint8_t n);

uint8_t SEXP_number_getu_8 (const SEXP_t *s_exp);

SEXP_t *SEXP_number_newi_16 (int16_t n);

SEXP_t *SEXP_number_newu_16 (uint16_t n);

#define SEXP_number_newi SEXP_number_newi_32

SEXP_t *SEXP_number_newi_32 (int32_t n);

#define SEXP_number_geti SEXP_number_geti_32

int32_t SEXP_number_geti_32 (const SEXP_t *s_exp);

bool SEXP_number_getb (const SEXP_t *s_exp);

#define SEXP_number_newu SEXP_number_newu_32

SEXP_t *SEXP_number_newu_32 (uint32_t n);

#define  SEXP_number_getu SEXP_number_getu_32

uint32_t SEXP_number_getu_32 (const SEXP_t *s_exp);

SEXP_t *SEXP_number_newi_64 (int64_t n);

int64_t SEXP_number_geti_64 (const SEXP_t *s_exp);

SEXP_t *SEXP_number_newu_64 (uint64_t n);

uint64_t SEXP_number_getu_64 (const SEXP_t *s_exp);

SEXP_t *SEXP_number_newf (double n);

double  SEXP_number_getf (const SEXP_t *s_exp);

int SEXP_number_get (const SEXP_t *s_exp, void *dst, SEXP_numtype_t type);

uint16_t SEXP_number_getu_16 (const SEXP_t *s_exp);

void    SEXP_number_free (SEXP_t *s_exp);

bool    SEXP_numberp (const SEXP_t *s_exp);

SEXP_numtype_t SEXP_number_type (const SEXP_t *sexp);

/*
 * string
 */

SEXP_t *SEXP_string_new  (const void *string, size_t strlen) __attribute__ ((nonnull (1)));

SEXP_t *SEXP_string_newf (const char *format, ...) __attribute__ ((format (printf, 1, 2), nonnull (1)));

void SEXP_string_free (SEXP_t *s_exp);

bool SEXP_stringp (const SEXP_t *s_exp);

size_t SEXP_string_length (const SEXP_t *s_exp);

int SEXP_strcmp (const SEXP_t *s_exp, const char *str) __attribute__ ((nonnull (2)));

int SEXP_strncmp (const SEXP_t *s_exp, const char *str, size_t n) __attribute__ ((nonnull (2)));

int SEXP_string_nth (const SEXP_t *s_exp, size_t n);

char  *SEXP_string_cstr (const SEXP_t *s_exp);

size_t SEXP_string_cstr_r (const SEXP_t *s_exp, char *buf, size_t len) __attribute__ ((nonnull (2)));

char  *SEXP_string_cstrp (const SEXP_t *s_exp);

char *SEXP_string_subcstr (const SEXP_t *s_exp, size_t beg, size_t len);

int SEXP_string_cmp (const SEXP_t *str_a, const SEXP_t *str_b);

bool SEXP_string_getb (const SEXP_t *s_exp);

/*
 * list
 */

SEXP_t *SEXP_list_new (SEXP_t *memb, ...);

void    SEXP_list_free (SEXP_t *s_exp);

bool    SEXP_listp (const SEXP_t *s_exp);

size_t  SEXP_list_length (const SEXP_t *s_exp);

SEXP_t *SEXP_list_first (const SEXP_t *list);

SEXP_t *SEXP_list_rest  (const SEXP_t *list);

SEXP_t *SEXP_list_last (const SEXP_t *list);

SEXP_t *SEXP_list_nth (const SEXP_t *list, uint32_t n);

SEXP_t *SEXP_list_add (SEXP_t *list, const SEXP_t *s_exp);

SEXP_t *SEXP_list_join (const SEXP_t *list_a, const SEXP_t *list_b);

SEXP_t *SEXP_list_push (SEXP_t *list, const SEXP_t *s_exp);

SEXP_t *SEXP_list_pop (SEXP_t *list);

SEXP_t *SEXP_list_sort(SEXP_t *list, int(*compare)(const SEXP_t *, const SEXP_t *));

SEXP_t *SEXP_list_replace (SEXP_t *list, uint32_t n, const SEXP_t *s_exp);

SEXP_t *SEXP_listref_first (SEXP_t *list);

SEXP_t *SEXP_listref_rest (SEXP_t *list);

SEXP_t *SEXP_listref_last (SEXP_t *list);

SEXP_t *SEXP_listref_nth (SEXP_t *list, uint32_t n);

typedef struct SEXP_it SEXP_it_t;

#define SEXP_IT_RECURSIVE 0x01
#define SEXP_IT_HARDREF   0x02

SEXP_it_t *SEXP_listit_new (const SEXP_t *list, int flags);
SEXP_t    *SEXP_listit_next(SEXP_it_t *it);
SEXP_t    *SEXP_listit_prev (SEXP_it_t *it);
SEXP_t    *SEXP_listit_length (SEXP_it_t *it);
SEXP_t    *SEXP_listit_seek (SEXP_it_t *it, uint32_t n);
void       SEXP_listit_free (SEXP_it_t *it);

typedef struct SEXP_list_it SEXP_list_it;

SEXP_list_it *SEXP_list_it_new(const SEXP_t *list);
SEXP_t *SEXP_list_it_next(SEXP_list_it *it);
void SEXP_list_it_free(SEXP_list_it *it);

#if __STDC_VERSION__ >= 199901L
# include <common/util.h>

/* TODO: use alloca & softref_r here */
#define SEXP_list_foreach(var, list)                                    \
        for (uint32_t OSCAP_CONCAT(i,__LINE__) = 1; ((var) = SEXP_list_nth (list, OSCAP_CONCAT(i,__LINE__))) != NULL; ++OSCAP_CONCAT(i,__LINE__), SEXP_free (var), (var) = NULL)

#define SEXP_sublist_foreach(var, list, beg, end)                       \
        for (uint32_t OSCAP_CONCAT(i,__LINE__) = (beg); OSCAP_CONCAT(i,__LINE__) <= ((size_t)(end)) && ((var) = SEXP_list_nth (list, OSCAP_CONCAT(i,__LINE__))) != NULL; ++OSCAP_CONCAT(i,__LINE__), SEXP_free (var), (var) = NULL)

#define SEXP_LIST_END (UINT32_MAX - 1)

#endif /* __STDC_VERSION__ >= 199901L */

/*
 * generic
 */
SEXP_t *SEXP_new (void);

bool SEXP_emptyp(SEXP_t *sexp);

SEXP_t *SEXP_ref (const SEXP_t *s_exp);

SEXP_t *SEXP_unref (SEXP_t *s_exp_o);

SEXP_t *SEXP_softref (SEXP_t *s_exp);

bool SEXP_softrefp(const SEXP_t *s_exp);

uint32_t SEXP_refs (const SEXP_t *ref);

bool SEXP_eq (const SEXP_t *a, const SEXP_t *b);

int SEXP_refcmp(const SEXP_t *a, const SEXP_t *b);

bool SEXP_deepcmp(const SEXP_t *a, const SEXP_t *b);

#ifdef __COVERITY__
/*
 * An alternative implementation for Coverity, which reports
 * a lot of false positives because it is not be able to
 * handle functions with variable number of arguments
 */
# define SEXP_vfree_coverity(...) \
        do { \
                SEXP_t *__svf##__LINE__[] = { __VA_ARGS__ }; \
                size_t __svfc##__LINE__ = sizeof (__svf##__LINE__)/sizeof(SEXP_t *); \
                for (; __svfc##__LINE__ > 0; --__svfc##__LINE__) \
                        if (__svf##__LINE__[__svfc##__LINE__ - 1]) \
                                SEXP_free(__svf##__LINE__[__svfc##__LINE__ - 1]); \
        } while(0)
#endif /* __COVERITY__ */

#if defined(NDEBUG)

void     SEXP_free (SEXP_t *s_exp);

void     __SEXP_vfree (int n, SEXP_t *s_exp, ...);
#ifdef __COVERITY__
# define SEXP_vfree(...) SEXP_vfree_coverity(__VA_ARGS__)
#else
# define SEXP_vfree(...) __SEXP_vfree(PP_NARG(__VA_ARGS__), __VA_ARGS__)
#endif
#else
# define SEXP_free(ptr) __SEXP_free (ptr, __FILE__, __LINE__, __PRETTY_FUNCTION__)
void     __SEXP_free (SEXP_t *s_exp, const char *file, uint32_t line, const char *func);
#ifdef __COVERITY__
# define SEXP_vfree(...) SEXP_vfree_coverity(__VA_ARGS__)
#else
# define SEXP_vfree(...) __SEXP_vfree (__FILE__, __LINE__, __PRETTY_FUNCTION__, PP_NARG(__VA_ARGS__), __VA_ARGS__)
#endif
void     __SEXP_vfree (const char *file, uint32_t line, const char *func, int n, SEXP_t *s_exp, ...);
#endif

const char *SEXP_datatype (const SEXP_t *s_exp);

int SEXP_datatype_set (SEXP_t *s_exp, const char *name) __attribute__ ((nonnull (2)));

int SEXP_datatype_set_nth (SEXP_t *list, uint32_t n, const char *name) __attribute__ ((nonnull (3)));

SEXP_type_t SEXP_typeof (const SEXP_t *s_exp);

const char *SEXP_strtype (const SEXP_t *s_exp);

SEXP_t *SEXP_build (const char *s_str, ...);

size_t SEXP_sizeof (const SEXP_t *s_exp);

#if !defined(NDEBUG)
# define SEXP_VALIDATE(s) __SEXP_VALIDATE(s, __FILE__, __LINE__, __PRETTY_FUNCTION__)
# include <stdlib.h>

void __SEXP_VALIDATE(const SEXP_t *s_exp, const char *file, uint32_t line, const char *func);

#else
# define SEXP_VALIDATE(s)
#endif

#ifdef __cplusplus
}
#endif

#endif /* SEXP_MANIP_H */

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