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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(* $Id: coqide.ml 11952 2009-03-02 15:29:08Z vgross $ *)
open Ideutils
let underscore = Glib.Utf8.to_unichar "_" (ref 0)
let arobase = Glib.Utf8.to_unichar "@" (ref 0)
let prime = Glib.Utf8.to_unichar "'" (ref 0)
let bn = Glib.Utf8.to_unichar "\n" (ref 0)
let space = Glib.Utf8.to_unichar " " (ref 0)
let tab = Glib.Utf8.to_unichar "\t" (ref 0)
(* TODO: avoid num and prime at the head of a word *)
let is_word_char c =
Glib.Unichar.isalnum c || c = underscore || c = prime
let starts_word (it:GText.iter) =
prerr_endline ("Starts word ? '"^(Glib.Utf8.from_unichar it#char)^"'");
(not it#copy#nocopy#backward_char ||
(let c = it#backward_char#char in
not (is_word_char c)))
let ends_word (it:GText.iter) =
(not it#copy#nocopy#forward_char ||
let c = it#forward_char#char in
not (is_word_char c)
)
let inside_word (it:GText.iter) =
let c = it#char in
not (starts_word it) &&
not (ends_word it) &&
is_word_char c
let is_on_word_limit (it:GText.iter) = inside_word it || ends_word it
let find_word_start (it:GText.iter) =
let rec step_to_start it =
prerr_endline "Find word start";
if not it#nocopy#backward_char then
(prerr_endline "find_word_start: cannot backward"; it)
else if is_word_char it#char
then step_to_start it
else (it#nocopy#forward_char;
prerr_endline ("Word start at: "^(string_of_int it#offset));it)
in
step_to_start it#copy
let find_word_end (it:GText.iter) =
let rec step_to_end (it:GText.iter) =
prerr_endline "Find word end";
let c = it#char in
if c<>0 && is_word_char c then (
ignore (it#nocopy#forward_char);
step_to_end it
) else (
prerr_endline ("Word end at: "^(string_of_int it#offset));
it)
in
step_to_end it#copy
let get_word_around (it:GText.iter) =
let start = find_word_start it in
let stop = find_word_end it in
start,stop
let rec complete_backward w (it:GText.iter) =
prerr_endline "Complete backward...";
match it#backward_search w with
| None -> (prerr_endline "backward_search failed";None)
| Some (start,stop) ->
prerr_endline ("complete_backward got a match:"^(string_of_int start#offset)^(string_of_int stop#offset));
if starts_word start then
let ne = find_word_end stop in
if ne#compare stop = 0
then complete_backward w start
else Some (start,stop,ne)
else complete_backward w start
let rec complete_forward w (it:GText.iter) =
prerr_endline "Complete forward...";
match it#forward_search w with
| None -> None
| Some (start,stop) ->
if starts_word start then
let ne = find_word_end stop in
if ne#compare stop = 0 then
complete_forward w stop
else Some (stop,stop,ne)
else complete_forward w stop
|
