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(*
* Copyright (c) 2016 Hannes Mehnert <hannes@mehnert.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*)
[%%cstruct
type foo = {
a : uint8_t;
b : uint16_t;
c : uint32_t;
d : uint8_t [@len 8]
} [@@big_endian]
]
[%%cstruct
type bar = {
a : uint8_t;
b : uint16_t;
c : uint32_t;
d : uint8_t [@len 8]
} [@@big_endian]
]
[%%cstruct
type lbar = {
a : uint8_t;
b : uint16_t;
c : uint32_t;
d : uint8_t [@len 8]
} [@@little_endian]
]
(* see #72
[%%cstruct
type hbar = {
a : uint8_t;
b : uint16_t;
c : uint32_t;
d : uint8_t [@len 8]
} [@@host_endian]
]
*)
[%%cstruct
type bibar = {
a : uint8_t;
b : uint16_t;
c : uint32_t;
d : uint8_t [@len 8]
} [@@bi_endian]
]
(** This should not emit any warnings *)
[%%cstruct
type unused = {
a : uint8_t;
b : uint16_t;
c : uint32_t;
d : uint8_t;
e : uint8_t; [@len 16]
} [@@big_endian]
]
let set_with_ignored_field__b = true
let _ : bool = set_with_ignored_field__b
[%%cstruct
type with_ignored_field = {
a : uint8_t;
_b : uint8_t;
c : uint8_t;
} [@@little_endian]
]
let _ : bool = set_with_ignored_field__b
(** This should not emit any warnings either *)
[%%cenum
type unused_cenum =
| DROPPED [@id 0xfffe]
| ERROR [@id 0xffff]
| OKAY [@id 0]
| NULL [@id 1]
[@@int16_t] [@@sexp]
]
(** Duplicate _ fields are OK *)
[%%cstruct
type with_several_ignored =
{ x : int8_t
; _y : int8_t
; z : int8_t
; _y : int8_t
} [@@little_endian]
]
let tests () =
(* Test basic set/get functions *)
let be = Cstruct.of_bigarray (Bigarray.(Array1.create char c_layout sizeof_foo)) in
for i = 0 to 255 do
set_bar_a be i;
assert(get_bar_a be = i)
done;
let le = Cstruct.of_bigarray (Bigarray.(Array1.create char c_layout sizeof_bar)) in
for i = 0 to 255 do
set_foo_a le i;
assert(get_foo_a le = i)
done;
let bibe = Cstruct.of_bigarray (Bigarray.(Array1.create char c_layout BE.sizeof_bibar)) in
for i = 0 to 255 do
BE.set_bibar_a bibe i;
assert(BE.get_bibar_a bibe = i)
done;
let bile = Cstruct.of_bigarray (Bigarray.(Array1.create char c_layout LE.sizeof_bibar)) in
for i = 0 to 255 do
LE.set_bibar_a bile i;
assert(LE.get_bibar_a bile = i)
done;
let be = Cstruct.of_bigarray (Bigarray.(Array1.create char c_layout sizeof_foo)) in
for i = 0 to 65535 do
set_bar_b be i;
assert(get_bar_b be = i)
done;
let le = Cstruct.of_bigarray(Bigarray.(Array1.create char c_layout sizeof_bar)) in
for i = 0 to 65535 do
set_foo_b le i;
assert(get_foo_b le = i)
done;
let bibe = Cstruct.of_bigarray (Bigarray.(Array1.create char c_layout BE.sizeof_bibar)) in
for i = 0 to 65535 do
BE.set_bibar_a bibe i;
assert(BE.get_bibar_a bibe = i mod 256)
done;
let bile = Cstruct.of_bigarray (Bigarray.(Array1.create char c_layout LE.sizeof_bibar)) in
for i = 0 to 65535 do
LE.set_bibar_a bile i;
assert(LE.get_bibar_a bile = i mod 256)
done;
let be = Cstruct.of_bigarray (Bigarray.(Array1.create char c_layout sizeof_foo)) in
let rec fn = function
|i when i < 0l -> ()
|i ->
set_bar_c be i;
assert(get_bar_c be = i);
fn (Int32.sub i 0x10l)
in fn 0xffffffff_l;
let le = Cstruct.of_bigarray (Bigarray.(Array1.create char c_layout sizeof_bar)) in
let rec fn = function
|i when i < 0l -> ()
|i ->
set_foo_c le i;
assert(get_foo_c le = i);
fn (Int32.sub i 0x10l)
in fn 0xffffffff_l;
(* Get/set buffers and blits *)
let s1 = "deadbeef" in
set_foo_d s1 0 be;
assert(copy_foo_d be = s1);
let sb1 = get_foo_d be in
blit_bar_d sb1 0 le;
assert(copy_bar_d le = s1);
Printf.printf "%s %s\n" (copy_foo_d be) (copy_bar_d le);
(* Create sub-view and shift it back *)
let be = Cstruct.of_bigarray (Bigarray.(Array1.create char c_layout sizeof_foo)) in
set_foo_a be 7;
set_foo_b be 44;
set_foo_c be 0xbeef_l;
set_foo_d "abcdefgh" 0 be;
(* get a subview *)
let be2 = Cstruct.shift be 3 in
assert(Cstruct.BE.get_uint32 be2 0 = 0xbeef_l);
assert(Cstruct.BE.get_uint32 be 3 = 0xbeef_l);
assert(get_foo_b be = 44);
assert(get_foo_a be = 7);
hexdump_foo be;
print_endline (Sexplib.Sexp.to_string_hum (Cstruct_sexp.sexp_of_t be));
hexdump_with_ignored_field (Cstruct.of_hex "010203")
let () = tests ()
|
