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String buffers, part 2b: Add extended string buffers. Use in serializer.

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Sponsored by fmad.io.
This commit is contained in:
Mike Pall
2021-06-01 00:55:51 +02:00
parent 394fb6267a
commit 61990cef05
6 changed files with 210 additions and 98 deletions
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23
src/lib_buffer.c
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@@ -22,15 +22,13 @@
#define LJLIB_MODULE_buffer
/* Note: this uses interim structs until the SBuf reorg. */
LJLIB_CF(buffer_encode)
{
cTValue *o = lj_lib_checkany(L, 1);
StrBuf sbuf;
sbuf.sb = lj_buf_tmp_(L);
lj_serialize_put(&sbuf, o);
setstrV(L, L->top++, lj_buf_str(L, sbuf.sb));
SBufExt sbx;
lj_bufx_init_borrow(L, &sbx, &G(L)->tmpbuf);
lj_serialize_put(&sbx, o);
setstrV(L, L->top++, lj_buf_str(L, (SBuf *)&sbx));
lj_gc_check(L);
return 1;
}
@@ -38,16 +36,11 @@ LJLIB_CF(buffer_encode)
LJLIB_CF(buffer_decode)
{
GCstr *str = lj_lib_checkstr(L, 1);
char *p = (char *)strdata(str);
SBuf sb;
StrBuf sbuf;
setsbufL(&sb, L);
sb.b = p;
sb.w = sb.e = p + str->len;
sbuf.sb = &sb;
sbuf.r = p;
SBufExt sbx;
lj_bufx_init_cow(L, &sbx, strdata(str), str->len);
/* No need to set sbx.cowref here. */
setnilV(L->top++);
lj_serialize_get(&sbuf, L->top-1);
lj_serialize_get(&sbx, L->top-1);
lj_gc_check(L);
return 1;
}