types.h

#ifndef REIS_TYPES_H
#define REIS_TYPES_H
 
#include <reis/base.h>
 
/* A nifty, while a little hacky, generic string type. */
typedef struct string {
        enum str_type {
                E_STRING,
                E_WCSTRING
        } __attribute__ ((__packed__)) type;
    union data {
        char *str;
                wchar_t *wcs;
    } val;
    size_t len;
} string_t;
 
 
static inline string_t* strs( const char *lit ) {
        size_t len = strlen( lit );
        string_t *s = (string_t*)MALLOC( sizeof(string_t) );
        s->val.str = (char*)MALLOC( len + 1 );
        strcpy( s->val.str, lit );
        s->len = len;
        s->type = E_STRING;
        return s;
}
 
static inline string_t* strwcs( const wchar_t *lit ) {
        size_t len = wcslen( lit );
        string_t *s = (string_t*)MALLOC( sizeof(string_t) );
        s->val.wcs = (wchar_t*)MALLOC( sizeof(wchar_t) * (len + 1) );
        wcscpy( s->val.wcs, lit );
        s->len = len;
        s->type = E_WCSTRING;
        return s;
}
 
/* The constructor for `string_t`. */
#define STR(s) _Generic((s),  \
      char *: strs,             \
        const char *: strs,       \
        wchar_t *: strwcs,        \
        const wchar_t *:strwcs    \
)(s)
 
typedef string_t* string;
 
#endif /* REIS_TYPES_H */