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// Type info and methods for CString datatype (char*)
#include <err.h>
#include <gc.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include "integers.h"
#include "siphash.h"
#include "stdlib.h"
#include "text.h"
#include "util.h"
public
Text_t CString$as_text(const void *c_string, bool colorize, const TypeInfo_t *info) {
(void)info;
if (!c_string) return Text("CString");
Text_t text = Text$from_str(*(const char **)c_string);
return Text$concat(colorize ? Text("\x1b[34mCString\x1b[m(") : Text("CString("),
Text$quoted(text, colorize, Text("\"")), Text(")"));
}
PUREFUNC public int32_t CString$compare(const void *x, const void *y, const TypeInfo_t *info) {
(void)info;
if (x == y) return 0;
if (!*(const char **)x != !*(const char **)y) return (!*(const char **)y) - (!*(const char **)x);
return strcmp(*(const char **)x, *(const char **)y);
}
PUREFUNC public bool CString$equal(const void *x, const void *y, const TypeInfo_t *type) {
return CString$compare(x, y, type) == 0;
}
PUREFUNC public uint64_t CString$hash(const void *c_str, const TypeInfo_t *info) {
(void)info;
if (!*(const char **)c_str) return 0;
return siphash24(*(void **)c_str, strlen(*(const char **)c_str));
}
PUREFUNC public bool CString$is_none(const void *c_str, const TypeInfo_t *info) {
(void)info;
return *(const char **)c_str == NULL;
}
static void CString$serialize(const void *obj, FILE *out, Table_t *pointers, const TypeInfo_t *info) {
(void)info;
const char *str = *(const char **)obj;
int64_t len = (int64_t)strlen(str);
Int64$serialize(&len, out, pointers, &Int64$info);
fwrite(str, sizeof(char), (size_t)len, out);
}
static void CString$deserialize(FILE *in, void *out, List_t *pointers, const TypeInfo_t *info) {
(void)info;
int64_t len = -1;
Int64$deserialize(in, &len, pointers, &Int64$info);
char *str = GC_MALLOC_ATOMIC((size_t)len + 1);
if (fread(str, sizeof(char), (size_t)len, in) != (size_t)len) fail("Not enough data in stream to deserialize");
str[len + 1] = '\0';
*(const char **)out = str;
}
public
const TypeInfo_t CString$info = {
.size = sizeof(const char *),
.align = __alignof__(const char *),
.metamethods =
{
.hash = CString$hash,
.compare = CString$compare,
.equal = CString$equal,
.as_text = CString$as_text,
.is_none = CString$is_none,
.serialize = CString$serialize,
.deserialize = CString$deserialize,
},
};
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