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/* capn-list.inc
*
* Copyright (C) 2013 James McKaskill
*
* This software may be modified and distributed under the terms
* of the MIT license. See the LICENSE file for details.
*/
#define CAT2(A,B) A ## B
#define CAT(A,B) CAT2(A, B)
#define UINT_T CAT(CAT(uint, SZ), _t)
#define LIST_T CAT(capn_list, SZ)
#define FLIP CAT(capn_flip, SZ)
UINT_T CAT(capn_get,SZ) (LIST_T l, int off) {
char *d;
capn_ptr p = l.p;
if (off >= p.len) {
return 0;
}
switch (p.type) {
case CAPN_LIST:
if (p.datasz < SZ/8)
return 0;
d = p.data + off * (p.datasz + 8*p.ptrs);
return FLIP(*(UINT_T*)d);
case CAPN_PTR_LIST:
d = struct_ptr(p.seg, p.data + 8*off, SZ/8);
if (d) {
return FLIP(*(UINT_T*)d);
} else {
return 0;
}
default:
return 0;
}
}
int CAT(capn_getv,SZ) (LIST_T l, int off, UINT_T *to, int sz) {
int i;
capn_ptr p;
capn_resolve(&l.p);
p = l.p;
if (off + sz > p.len) {
sz = p.len - off;
}
switch (p.type) {
case CAPN_LIST:
if (p.datasz == SZ/8 && !p.ptrs && (SZ == 8 || CAPN_LITTLE)) {
memcpy(to, p.data + off, sz * (SZ/8));
return sz;
} else if (p.datasz < SZ/8) {
return -1;
}
for (i = 0; i < sz; i++) {
char *d = p.data + (i + off) * (p.datasz + 8*p.ptrs);
to[i] = FLIP(*(UINT_T*)d);
}
return sz;
case CAPN_PTR_LIST:
for (i = 0; i < sz; i++) {
char *d = struct_ptr(p.seg, p.data + 8*(i+off), SZ/8);
if (d) {
to[i] = FLIP(*(UINT_T*)d);
} else {
return -1;
}
}
return sz;
default:
return -1;
}
}
int CAT(capn_set,SZ) (LIST_T l, int off, UINT_T v) {
char *d;
capn_ptr p = l.p;
if (off >= p.len) {
return -1;
}
switch (p.type) {
case CAPN_LIST:
if (p.datasz < SZ/8)
return -1;
d = p.data + off * (p.datasz + 8*p.ptrs);
*(UINT_T*) d = FLIP(v);
return 0;
case CAPN_PTR_LIST:
d = struct_ptr(p.seg, p.data + 8*off, SZ/8);
if (!d) {
return -1;
}
*(UINT_T*) d = FLIP(v);
return 0;
default:
return -1;
}
}
int CAT(capn_setv,SZ) (LIST_T l, int off, const UINT_T *from, int sz) {
int i;
capn_ptr p = l.p;
if (off + sz > p.len) {
sz = p.len - off;
}
switch (p.type) {
case CAPN_LIST:
if (p.datasz == SZ/8 && !p.ptrs && (SZ == 8 || CAPN_LITTLE)) {
memcpy(p.data + off, from, sz * (SZ/8));
return sz;
} else if (p.datasz < SZ/8) {
return -1;
}
for (i = 0; i < sz; i++) {
char *d = p.data + (i + off) * (p.datasz + 8*p.ptrs);
*(UINT_T*) d = FLIP(from[i]);
}
return sz;
case CAPN_PTR_LIST:
for (i = 0; i < sz; i++) {
char *d = struct_ptr(p.seg, p.data + 8*(i+off), SZ/8);
if (d) {
*(UINT_T*) d = FLIP(from[i]);
} else {
return -1;
}
}
return sz;
default:
return -1;
}
}
LIST_T CAT(capn_new_list,SZ) (struct capn_segment *seg, int sz) {
LIST_T l = {{CAPN_LIST}};
l.p.seg = seg;
l.p.len = sz;
l.p.datasz = SZ/8;
new_object(&l.p, sz*(SZ/8));
return l;
}
#undef CAT2
#undef CAT
#undef UINT_T
#undef LIST_T
#undef FLIP
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