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|
open Format_
let css =
{|
.box {
border: 2px solid black;
display: inline-block;
font-family: courier;
margin: 0;
padding: 4px;
}
.box:hover {
border-color: red;
}
.name {
font-family: arial;
font-style: italic;
font-weight: lighter;
font-size: 10px;
padding: 1px;
margin: 0 0 4px 0;
}
.break {
background-color: black;
color: white;
display: inline-block;
font-size: 10px;
padding: 2px;
}
.cbreak {
background-color: purple;
}
.keyword {
background-color: yellow;
}
.if_newline {
background-color: green;
}
.break_unless_newline {
background-color: blue;
}
.fits_or_breaks {
background-color: red;
}
.string_with_whitespaces {
background-color: yellow;
white-space: pre;
}
.tooltiptext {
visibility: hidden;
width: min-content;
white-space: pre;
background-color: black;
color: #fff;
text-align: left;
padding: 5px 5px;
border-radius: 6px;
position: absolute;
z-index: 1;
font-size: 10px;
}
div:hover>.tooltiptext, span:hover>.tooltiptext {
visibility: visible;
}
|}
let debug = ref false
let enable_stacktraces = ref false
let get_stack () =
if !enable_stacktraces then
Stdlib.Printexc.(30 |> get_callstack |> raw_backtrace_to_string)
else ""
let fprintf_as_0 fs fmt = Format_.kasprintf (Format_.pp_print_as fs 0) fmt
let debugf fs fmt =
(* Print the debug as length 0 to not disturb complex breaks. *)
if !debug then fprintf_as_0 fs fmt else Format_.ifprintf fs fmt
let with_box k fs =
let g = !debug in
debug := true ;
fprintf_as_0 fs
{|
<html>
<head>
<style>
%s
</style>
</head>
<body>
|}
css ;
k fs ;
fprintf_as_0 fs {|
</body>
</html>
|} ;
debug := g
let pp_box_name fs = function
| Some n -> Format_.fprintf fs ":%s" n
| None -> ()
let pp_box_indent fs = function 0 -> () | i -> Format_.fprintf fs "(%d)" i
let stack_tooltip fs stack =
match stack with
| Some stack -> debugf fs "<span class=\"tooltiptext\">%s</span>" stack
| None -> ()
let box_open ?name ?stack box_kind n fs =
debugf fs "<div class=\"box\"><p class=\"name\"><span>%s%a%a</span>%a</p>"
box_kind pp_box_name name stack_tooltip stack pp_box_indent n
let box_close fs = debugf fs "</div>"
let break fs n o ~stack =
debugf fs
"<div class=\"break\">(%i,%i)<span class=\"tooltiptext\">break %i %i\n\
%s</span></div>"
n o n o stack
let space_break ?stack fs =
debugf fs "<div class=\"break space_break\">space_break%a</div>"
stack_tooltip stack
let cut_break ?stack fs =
debugf fs "<div class=\"break cut_break\">cut_break%a</div>" stack_tooltip
stack
let force_newline ?stack fs =
debugf fs "<div class=\"break force_newline\">force_newline%a</div>"
stack_tooltip stack
let start_str fs s =
let extra_class =
match String.lfindi s ~f:(fun _ c -> Char.is_whitespace c) with
| Some _ ->
(* String contains whitespaces, color it *)
" string_with_whitespaces"
| None -> ""
in
debugf fs "<span class='string%s'>" extra_class
let end_str ?stack fs = debugf fs "%a</span>" stack_tooltip stack
let pp_keyword fs s = fprintf_as_0 fs "<span class=\"keyword\">%s</span>" s
let _pp_format_lit fs =
let open CamlinternalFormatBasics in
function
| Close_box -> pp_keyword fs "@]"
| Close_tag -> pp_keyword fs "@}"
| Break (str, _, _) -> pp_keyword fs str
| FFlush -> pp_keyword fs "@?"
| Force_newline -> pp_keyword fs "@\\n"
| Flush_newline -> pp_keyword fs "@."
| Magic_size (str, _) -> pp_keyword fs str
| Escaped_at -> fprintf fs "@@"
| Escaped_percent -> fprintf fs "@@%%"
| Scan_indic c -> pp_keyword fs ("@" ^ String.make 1 c)
let rec _format_string : type a b c d e f.
_ -> (a, b, c, d, e, f) CamlinternalFormatBasics.fmt -> unit =
let open CamlinternalFormatBasics in
fun fs -> function
| String_literal (s, tl) -> fprintf fs "%s%a" s _format_string tl
| Char_literal (c, tl) -> fprintf fs "%c%a" c _format_string tl
| Formatting_lit (lit, tl) ->
fprintf fs "%a%a" _pp_format_lit lit _format_string tl
| Formatting_gen (Open_box (Format (n, _)), tl) ->
pp_keyword fs "@[" ; _format_string fs n ; _format_string fs tl
| Formatting_gen (Open_tag (Format (n, _)), tl) ->
pp_keyword fs "@{" ; _format_string fs n ; _format_string fs tl
| End_of_format -> ()
| _ -> pp_keyword fs "??"
(** Returns a boolean to signal the caller not to render the format string
again. *)
let fmt fs f =
let open CamlinternalFormatBasics in
if !debug then (
let (Format (fmt, _)) = f in
_format_string fs fmt ; true )
else false
let cbreak fs ~stack ~fits:(s1, i, s2) ~breaks:(s3, j, s4) =
debugf fs
"<div class=\"break cbreak\">(%s,%i,%s) (%s,%i,%s)<span \
class=\"tooltiptext\">cbreak ~fits:(%S, %i, %S) ~breaks:(%S, %i, %S)\n\
%s</span></div>"
s1 i s2 s3 j s4 s1 i s2 s3 j s4 stack
let if_newline fs ~stack s =
debugf fs
"<div class=\"break if_newline\">(%s)<span \
class=\"tooltiptext\">if_newline %S\n\
%s</span></div>"
s s stack
let break_unless_newline fs ~stack n o =
debugf fs
"<div class=\"break break_unless_newline\">(%i,%i)<span \
class=\"tooltiptext\">break_unless_newline %i %i\n\
%s</span></div>"
n o n o stack
let fits_or_breaks fs ~stack fits n o breaks =
debugf fs
"<div class=\"break fits_or_breaks\">(%s,%i,%i,%s)<span \
class=\"tooltiptext\">fits_or_breaks %S %i %i %S\n\
%s</span></div>"
fits n o breaks fits n o breaks stack
|
