/usr/lib/ocaml/lablgtk2/gtkSignal.ml is in liblablgtk2-ocaml-dev 2.18.5+dfsg-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 | (**************************************************************************)
(* Lablgtk *)
(* *)
(* This program is free software; you can redistribute it *)
(* and/or modify it under the terms of the GNU Library General *)
(* Public License as published by the Free Software Foundation *)
(* version 2, with the exception described in file COPYING which *)
(* comes with the library. *)
(* *)
(* This program is distributed in the hope that it will be useful, *)
(* but WITHOUT ANY WARRANTY; without even the implied warranty of *)
(* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *)
(* GNU Library General Public License for more details. *)
(* *)
(* You should have received a copy of the GNU Library General *)
(* Public License along with this program; if not, write to the *)
(* Free Software Foundation, Inc., 59 Temple Place, Suite 330, *)
(* Boston, MA 02111-1307 USA *)
(* *)
(* *)
(**************************************************************************)
open StdLabels
open Gobject
type id
type 'a marshaller = 'a -> Closure.argv -> unit
type ('a,'b) t =
{ name: string; classe: 'a; marshaller: 'b marshaller }
type query = {
id : int;
signal_name : string;
itype : string;
flags : int;
return : string;
params : string array;
}
let enter_callback = ref (fun () -> ())
and exit_callback = ref (fun () -> ())
let stop_emit_ref = ref false
let stop_emit () = stop_emit_ref := true
type saved_state = State of bool
let push_callback () =
!enter_callback ();
let old = !stop_emit_ref in
stop_emit_ref := false;
State old
let pop_callback (State old) =
let res = !stop_emit_ref in
stop_emit_ref := old;
!exit_callback ();
res
let user_handler = ref raise
let safe_call ?(where="function call") f x =
try f x
with exn -> try !user_handler exn
with exn ->
Printf.eprintf "In %s, uncaught exception: %s\n"
where (Printexc.to_string exn);
if Printexc.backtrace_status () then
Printexc.print_backtrace stderr;
flush stderr
external signal_new : string -> g_type -> Gobject.signal_type list -> unit = "ml_g_signal_new_me"
external query : int -> query = "ml_g_signal_query"
external list_ids : g_type -> int array = "ml_g_signal_list_ids"
external connect_by_name :
'a obj -> name:string -> callback:g_closure -> after:bool -> id
= "ml_g_signal_connect_closure"
external emit_stop_by_name : 'a obj -> name:string -> unit
= "ml_g_signal_stop_emission_by_name"
external handler_block : 'a obj -> id -> unit
= "ml_g_signal_handler_block"
external handler_unblock : 'a obj -> id -> unit
= "ml_g_signal_handler_unblock"
external disconnect : 'a obj -> id -> unit
= "ml_g_signal_handler_disconnect"
external is_connected : 'a obj -> id -> bool
= "ml_g_signal_handler_is_connected"
let marshal_unit f _ = f ()
let marshal_int f argv =
match Closure.get_args argv with
| _ :: `INT n :: _ -> f n
| _ -> invalid_arg "GtkSignal.marshal_int"
let marshal_string f argv =
match Closure.get_args argv with
| _ :: `STRING (Some s) :: _ -> f s
| _ -> invalid_arg "GtkSignal.marshal_string"
let marshal1 conv1 name f argv =
let arg1 =
try Data.of_value conv1 (Closure.nth argv 1)
with _ -> failwith ("GtkSignal.marshal1 : " ^ name)
in f arg1
let marshal2 conv1 conv2 name f argv =
let get conv pos = Data.of_value conv (Closure.nth argv ~pos) in
let arg1, arg2 =
try get conv1 1, get conv2 2
with _ -> failwith ("GtkSignal.marshal2 : " ^ name)
in f arg1 arg2
let marshal3 conv1 conv2 conv3 name f argv =
let get conv pos = Data.of_value conv (Closure.nth argv ~pos) in
let arg1, arg2, arg3 =
try get conv1 1, get conv2 2, get conv3 3
with _ -> failwith ("GtkSignal.marshal3 : " ^ name)
in f arg1 arg2 arg3
let marshal4 conv1 conv2 conv3 conv4 name f argv =
let get conv pos = Data.of_value conv (Closure.nth argv ~pos) in
let arg1, arg2, arg3, arg4 =
try
get conv1 1, get conv2 2, get conv3 3, get conv4 4
with _ -> failwith ("GtkSignal.marshal4 : " ^ name)
in f arg1 arg2 arg3 arg4
let marshal5 conv1 conv2 conv3 conv4 conv5 name f argv =
let get conv pos = Data.of_value conv (Closure.nth argv ~pos) in
let arg1, arg2, arg3, arg4, arg5 =
try
get conv1 1, get conv2 2, get conv3 3, get conv4 4, get conv5 5
with _ -> failwith ("GtkSignal.marshal5 : " ^ name)
in f arg1 arg2 arg3 arg4 arg5
let marshal6 conv1 conv2 conv3 conv4 conv5 conv6 name f argv =
let get conv pos = Data.of_value conv (Closure.nth argv ~pos) in
let arg1, arg2, arg3, arg4, arg5, arg6 =
try
get conv1 1, get conv2 2, get conv3 3, get conv4 4, get conv5 5,
get conv6 6
with _ -> failwith ("GtkSignal.marshal6 : " ^ name)
in f arg1 arg2 arg3 arg4 arg5 arg6
let set_result conv argv res =
Closure.set_result argv (conv.inj res)
let marshal0_ret ~ret f argv =
set_result ret argv (f ())
let marshal1_ret ~ret conv1 name f argv =
set_result ret argv (marshal1 conv1 name f argv)
let marshal2_ret ~ret conv1 conv2 name f argv =
set_result ret argv (marshal2 conv1 conv2 name f argv)
let marshal3_ret ~ret conv1 conv2 conv3 name f argv =
set_result ret argv (marshal3 conv1 conv2 conv3 name f argv)
let marshal4_ret ~ret conv1 conv2 conv3 conv4 name f argv =
set_result ret argv (marshal4 conv1 conv2 conv3 conv4 name f argv)
external emit_by_name :
'a obj -> name:string -> params:'b data_set array -> g_value
= "ml_g_signal_emit_by_name"
let emit_by_name_unit obj ~name ~params =
ignore (emit_by_name obj ~name ~params)
let emit (obj : 'a obj) ~(sgn : ('a, 'b) t)
~(emitter : cont:(_ data_set array -> 'c) -> 'b) ~(conv : g_value -> 'c) =
emitter ~cont:
(fun params -> conv(emit_by_name obj ~name:sgn.name ~params))
let emit_unit obj =
emit obj ~emitter:(fun ~cont () -> cont [||]) ~conv:ignore ()
let emit_int =
emit ~emitter:(fun ~cont n -> cont [|`INT n|]) ~conv:ignore
external _override_class_closure :
string -> g_type -> g_closure -> unit
= "ml_g_signal_override_class_closure"
let override_class_closure { name = name } t c = _override_class_closure name t c
external chain_from_overridden : Closure.argv -> unit = "ml_g_signal_chain_from_overridden"
let connect_aux ~name ~marshaller ~callback ?(after = false) (obj : 'a obj) =
let callback argv =
let old = push_callback ()
in
(safe_call (marshaller callback) argv
~where: ("callback for signal " ^ name);
if pop_callback old then emit_stop_by_name obj ~name else ())
in connect_by_name obj ~name ~callback: (Closure.create callback) ~after
let connect ~sgn: ((sgn:('a, _) t)) ~callback ?after (obj : 'a obj) =
connect_aux ~name:sgn.name ~marshaller:sgn.marshaller ~callback ?after obj
let connect_property ~(prop:('a, _) property) ~callback (obj : 'a obj) =
let name = "notify::" ^ prop.Gobject.name in
let callback = fun () -> callback (get prop obj) in
connect_aux ~name ~marshaller:marshal_unit ~callback obj
|