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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: highlight.mll 11481 2008-10-20 19:23:51Z herbelin $ *)
{
open Lexing
type color = string
type highlight_order = int * int * color
let comment_start = ref 0
(* Without this table, the automaton would be too big and
ocamllex would fail *)
let is_one_word_command =
let h = Hashtbl.create 97 in
List.iter (fun s -> Hashtbl.add h s ())
[ "Add" ; "Check"; "Eval"; "Extraction" ;
"Load" ; "Undo"; "Goal";
"Proof" ; "Print"; "Qed" ; "Defined" ; "Save" ;
"End" ; "Section"; "Chapter"; "Transparent"; "Opaque"; "Comments"
];
Hashtbl.mem h
let is_constr_kw =
let h = Hashtbl.create 97 in
List.iter (fun s -> Hashtbl.add h s ())
[ "forall"; "fun"; "match"; "fix"; "cofix"; "with"; "for";
"end"; "as"; "let"; "in"; "dest"; "if"; "then"; "else"; "return";
"Prop"; "Set"; "Type" ];
Hashtbl.mem h
(* Without this table, the automaton would be too big and
ocamllex would fail *)
let is_one_word_declaration =
let h = Hashtbl.create 97 in
List.iter (fun s -> Hashtbl.add h s ())
[ (* Theorems *)
"Theorem" ; "Lemma" ; "Fact" ; "Remark" ; "Corollary" ;
"Proposition" ; "Property" ;
(* Definitions *)
"Definition" ; "Let" ; "Example" ; "SubClass" ;
"Fixpoint" ; "CoFixpoint" ; "Scheme" ;
(* Assumptions *)
"Hypothesis" ; "Variable" ; "Axiom" ; "Parameter" ; "Conjecture" ;
"Hypotheses" ; "Variables" ; "Axioms" ; "Parameters";
(* Inductive *)
"Inductive" ; "CoInductive" ; "Record" ; "Structure" ;
(* Other *)
"Ltac" ; "Typeclasses"; "Instance"; "Include"; "Context"; "Class"
];
Hashtbl.mem h
let starting = ref true
}
let space =
[' ' '\010' '\013' '\009' '\012']
let firstchar =
['$' 'A'-'Z' 'a'-'z' '_' '\192'-'\214' '\216'-'\246' '\248'-'\255']
let identchar =
['$' 'A'-'Z' 'a'-'z' '_' '\192'-'\214' '\216'-'\246' '\248'-'\255' '\'' '0'-'9']
let ident = firstchar identchar*
let multiword_declaration =
"Module" (space+ "Type")?
| "Program" space+ ident
| "Existing" space+ "Instance"
| "Canonical" space+ "Structure"
let locality = ("Local" space+)?
let multiword_command =
"Set" (space+ ident)*
| "Unset" (space+ ident)*
| "Open" space+ locality "Scope"
| "Close" space+ locality "Scope"
| "Bind" space+ "Scope"
| "Arguments" space+ "Scope"
| "Reserved" space+ "Notation" space+ locality
| "Delimit" space+ "Scope"
| "Next" space+ "Obligation"
| "Solve" space+ "Obligations"
| "Require" space+ ("Import"|"Export")?
| "Infix" space+ locality
| "Notation" space+ locality
| "Hint" space+ locality ident
| "Reset" (space+ "Initial")?
| "Tactic" space+ "Notation"
| "Implicit" space+ "Arguments"
| "Implicit" space+ ("Type"|"Types")
| "Combined" space+ "Scheme"
(* At least still missing: "Inline" + decl, variants of "Identity
Coercion", variants of Print, Add, ... *)
rule next_starting_order = parse
| "(*" { comment_start := lexeme_start lexbuf; comment lexbuf }
| space+ { next_starting_order lexbuf }
| multiword_declaration
{ starting:=false; lexeme_start lexbuf, lexeme_end lexbuf, "decl" }
| multiword_command
{ starting:=false; lexeme_start lexbuf, lexeme_end lexbuf, "kwd" }
| ident as id
{ if id = "Time" then next_starting_order lexbuf else
begin
starting:=false;
if is_one_word_command id then
lexeme_start lexbuf, lexeme_end lexbuf, "kwd"
else if is_one_word_declaration id then
lexeme_start lexbuf, lexeme_end lexbuf, "decl"
else
next_interior_order lexbuf
end
}
| _ { starting := false; next_interior_order lexbuf}
| eof { raise End_of_file }
and next_interior_order = parse
| "(*"
{ comment_start := lexeme_start lexbuf; comment lexbuf }
| ident as id
{ if is_constr_kw id then
lexeme_start lexbuf, lexeme_end lexbuf, "kwd"
else
next_interior_order lexbuf }
| "." (" "|"\n"|"\t") { starting := true; next_starting_order lexbuf }
| _ { next_interior_order lexbuf}
| eof { raise End_of_file }
and comment = parse
| "*)" { !comment_start,lexeme_end lexbuf,"comment" }
| "(*" { ignore (comment lexbuf); comment lexbuf }
| _ { comment lexbuf }
| eof { raise End_of_file }
{
open Ideutils
let highlighting = ref false
let highlight_slice (input_buffer:GText.buffer) (start:GText.iter) stop =
starting := true; (* approximation: assume the beginning of a sentence *)
if !highlighting then prerr_endline "Rejected highlight"
else begin
highlighting := true;
prerr_endline "Highlighting slice now";
input_buffer#remove_tag_by_name ~start ~stop "error";
input_buffer#remove_tag_by_name ~start ~stop "kwd";
input_buffer#remove_tag_by_name ~start ~stop "decl";
input_buffer#remove_tag_by_name ~start ~stop "comment";
(try begin
let offset = start#offset in
let s = start#get_slice ~stop in
let convert_pos = byte_offset_to_char_offset s in
let lb = Lexing.from_string s in
try
while true do
let b,e,o =
if !starting then next_starting_order lb
else next_interior_order lb in
let b,e = convert_pos b,convert_pos e in
let start = input_buffer#get_iter_at_char (offset + b) in
let stop = input_buffer#get_iter_at_char (offset + e) in
input_buffer#apply_tag_by_name ~start ~stop o
done
with End_of_file -> ()
end
with _ -> ());
highlighting := false
end
let highlight_current_line input_buffer =
try
let i = get_insert input_buffer in
highlight_slice input_buffer (i#set_line_offset 0) i
with _ -> ()
let highlight_around_current_line input_buffer =
try
let i = get_insert input_buffer in
highlight_slice input_buffer
(i#backward_lines 10)
(ignore (i#nocopy#forward_lines 10);i)
with _ -> ()
let highlight_all input_buffer =
try
highlight_slice input_buffer input_buffer#start_iter input_buffer#end_iter
with _ -> ()
}
|
