87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
// Type info and methods for CString datatype (char*)
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#include <ctype.h>
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#include <err.h>
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#include <gc.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "text.h"
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#include "siphash.h"
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#include "util.h"
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public Text_t CString$as_text(const void *c_string, bool colorize, const TypeInfo_t *info)
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{
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(void)info;
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if (!c_string) return Text("CString");
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Text_t text = Text$from_str(*(const char**)c_string);
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return Text$concat(colorize ? Text("\x1b[34mCString\x1b[m(") : Text("CString("), Text$quoted(text, colorize), Text(")"));
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}
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public Text_t CString$as_text_simple(const char *str)
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{
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return Text$format("%s", str);
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}
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PUREFUNC public int32_t CString$compare(const void *x, const void *y, const TypeInfo_t*)
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{
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if (x == y)
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return 0;
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if (!*(const char**)x != !*(const char**)y)
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return (!*(const char**)y) - (!*(const char**)x);
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return strcmp(*(const char**)x, *(const char**)y);
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}
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PUREFUNC public bool CString$equal(const void *x, const void *y, const TypeInfo_t *type)
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{
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return CString$compare(x, y, type) == 0;
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}
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PUREFUNC public uint64_t CString$hash(const void *c_str, const TypeInfo_t*)
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{
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if (!*(const char**)c_str) return 0;
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return siphash24(*(void**)c_str, strlen(*(const char**)c_str));
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}
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PUREFUNC public bool CString$is_none(const void *c_str, const TypeInfo_t*)
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{
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return *(const char**)c_str == NULL;
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}
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static void CString$serialize(const void *obj, FILE *out, Table_t *pointers, const TypeInfo_t*)
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{
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const char *str = *(const char **)obj;
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int64_t len = (int64_t)strlen(str);
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Int64$serialize(&len, out, pointers, &Int64$info);
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fwrite(str, sizeof(char), (size_t)len, out);
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}
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static void CString$deserialize(FILE *in, void *out, Array_t *pointers, const TypeInfo_t *)
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{
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int64_t len = -1;
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Int64$deserialize(in, &len, pointers, &Int64$info);
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char *str = GC_MALLOC_ATOMIC((size_t)len+1);
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fread(str, sizeof(char), (size_t)len, in);
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str[len+1] = '\0';
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*(const char**)out = str;
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}
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public const TypeInfo_t CString$info = {
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.size=sizeof(const char*),
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.align=__alignof__(const char*),
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.metamethods={
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.hash=CString$hash,
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.compare=CString$compare,
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.equal=CString$equal,
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.as_text=CString$as_text,
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.is_none=CString$is_none,
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.serialize=CString$serialize,
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.deserialize=CString$deserialize,
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},
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};
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// vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0
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