/*      $NetBSD: lint.h,v 1.52 2026/01/11 18:11:38 rillig Exp $ */

/*
 * Copyright (c) 1994, 1995 Jochen Pohl
 * All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Jochen Pohl for
 *      The NetBSD Project.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#else
#define HAVE_DECL_SYS_SIGNAME 1
#endif

#include <sys/types.h>
#include <ctype.h>
#include <err.h>
#include <inttypes.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>

#include "param.h"

#if IS_LINT1 || IS_LINT2

// Null-terminated character buffer, may contain null characters.
typedef struct {
        size_t  len;            /* excluding the terminating '\0' */
        size_t  cap;
        char    *data;
} buffer;

/*
 * Type specifiers, used in type structures (type_t) and elsewhere.
 */
typedef enum {
        NO_TSPEC = 0,
        SIGNED,         /* keyword "signed", only used in the parser */
        UNSIGN,         /* keyword "unsigned", only used in the parser */
        BOOL,           /* _Bool */
        CHAR,           /* char */
        SCHAR,          /* signed char */
        UCHAR,          /* unsigned char */
        SHORT,          /* (signed) short */
        USHORT,         /* unsigned short */
        INT,            /* (signed) int */
        UINT,           /* unsigned int */
        LONG,           /* (signed) long */
        ULONG,          /* unsigned long */
        LLONG,          /* (signed) long long */
        ULLONG,         /* unsigned long long */
        INT128,         /* (signed) __int128_t */
        UINT128,        /* __uint128_t */
        FLOAT,          /* float */
        DOUBLE,         /* double or, with tflag, long float */
        LDOUBLE,        /* long double */
        COMPLEX,        /* keyword "_Complex", only used in the parser */
        FCOMPLEX,       /* float _Complex */
        DCOMPLEX,       /* double _Complex */
        LCOMPLEX,       /* long double _Complex */
        VOID,           /* void */
        AUTO_TYPE,      /* GCC's __auto_type */
        STRUCT,         /* structure tag */
        UNION,          /* union tag */
        ENUM,           /* enum tag */
        PTR,            /* pointer */
        ARRAY,          /* array */
        FUNC,           /* function */
#define NTSPEC ((int)FUNC + 1)
} tspec_t;


/*
 * size of types, name and classification
 */
typedef struct {
#if IS_LINT1
        unsigned int tt_size_in_bits;
        enum rank_kind {
                RK_NONE,
                RK_INTEGER,
                RK_FLOATING,
                RK_COMPLEX,
        } tt_rank_kind;
        unsigned int tt_rank_value;     /* relative size of the type; depends
                                         * on pflag and PTRDIFF_TSPEC */
#endif
        tspec_t tt_signed_counterpart;
        tspec_t tt_unsigned_counterpart;
        bool    tt_is_integer:1;        /* integer type */
#if IS_LINT1
        bool    tt_is_uinteger:1;       /* unsigned integer type */
        bool    tt_is_floating:1;       /* floating point type */
        bool    tt_is_arithmetic:1;     /* arithmetic type */
        bool    tt_is_scalar:1;         /* scalar type */
        bool    tt_is_complex:1;        /* complex type */
#endif
        const char *tt_name;            /* name of the type */
} ttab_t;

extern ttab_t ttab[];

static inline const ttab_t *
type_properties(tspec_t t)
{
        return ttab + t;
}

#define size_in_bits(t)         (type_properties(t)->tt_size_in_bits)
#define signed_type(t)          (type_properties(t)->tt_signed_counterpart)
#define unsigned_type(t)        (type_properties(t)->tt_unsigned_counterpart)
#define is_integer(t)           (type_properties(t)->tt_is_integer)
#define is_uinteger(t)          (type_properties(t)->tt_is_uinteger)
#define is_floating(t)          (type_properties(t)->tt_is_floating)
#define is_arithmetic(t)        (type_properties(t)->tt_is_arithmetic)
#define is_complex(t)           (type_properties(t)->tt_is_complex)
#define is_scalar(t)            (type_properties(t)->tt_is_scalar)

#define has_operands(tn)        (modtab[(tn)->tn_op].m_has_operands)


typedef enum {
        NODECL,                 /* not declared until now */
        DECL,                   /* declared */
        TDEF,                   /* tentative defined */
        DEF                     /* defined */
} def_t;

#if IS_LINT1
typedef struct lint1_type type_t;
#else
typedef struct lint2_type type_t;
#endif
#endif

static inline bool
ch_isalnum(char ch)
{
        return isalnum((unsigned char)ch) != 0;
}

static inline bool
ch_isalpha(char ch)
{
        return isalpha((unsigned char)ch) != 0;
}

static inline bool
ch_isdigit(char ch)
{
        return isdigit((unsigned char)ch) != 0;
}

static inline bool
ch_islower(char ch)
{
        return islower((unsigned char)ch) != 0;
}

static inline bool
ch_isprint(char ch)
{
        return isprint((unsigned char)ch) != 0;
}

static inline bool
ch_isspace(char ch)
{
        return isspace((unsigned char)ch) != 0;
}

static inline bool
ch_isupper(char ch)
{
        return isupper((unsigned char)ch) != 0;
}

#include "externs.h"