tomo/builtins/c_string.c

53 lines
1.3 KiB
C

// Type info and methods for CString datatype (char*)
#include <ctype.h>
#include <err.h>
#include <gc.h>
#include <gc/cord.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include "functions.h"
#include "halfsiphash.h"
#include "text.h"
#include "types.h"
#include "util.h"
public Text_t CString$as_text(const void *c_string, bool colorize, const TypeInfo *info)
{
(void)info;
if (!c_string) return Text("CString");
Text_t text = Text$from_str(*(char**)c_string);
return Text$concat(colorize ? Text("\x1b[34mCString\x1b[m(") : Text("CString("), Text$quoted(text, colorize), Text(")"));
}
public int CString$compare(const char **x, const char **y)
{
if (!*x != !*y)
return (!*y) - (!*x);
return strcmp(*x, *y);
}
public bool CString$equal(const char **x, const char **y)
{
return CString$compare(x, y) == 0;
}
public uint32_t CString$hash(const char **c_str)
{
if (!*c_str) return 0;
uint32_t hash;
halfsiphash(*c_str, strlen(*c_str), TOMO_HASH_KEY, (uint8_t*)&hash, sizeof(hash));
return hash;
}
public const TypeInfo $CString = {
.size=sizeof(char*),
.align=__alignof__(char*),
.tag=CustomInfo,
.CustomInfo={.as_text=(void*)CString$as_text, .compare=(void*)CString$compare, .equal=(void*)CString$equal, .hash=(void*)CString$hash},
};
// vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0