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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2010 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(* $Id$ *)
{
open Lexing
type token =
| Comment
| Keyword
| Declaration
| ProofDeclaration
| Qed
| String
(* 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";"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"; "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 ())
[ (* Definitions *)
"Definition" ; "Let" ; "Example" ; "SubClass" ;
"Fixpoint" ; "CoFixpoint" ; "Scheme" ; "Function" ;
(* 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 is_proof_declaration =
let h = Hashtbl.create 97 in
List.iter (fun s -> Hashtbl.add h s ())
[ "Theorem" ; "Lemma" ; " Fact" ; "Remark" ; "Corollary" ;
"Proposition" ; "Property" ];
Hashtbl.mem h
let is_proof_end =
let h = Hashtbl.create 97 in
List.iter (fun s -> Hashtbl.add h s ())
[ "Qed" ; "Defined" ; "Admitted" ];
Hashtbl.mem h
let start = 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 sentence_sep = '.' [ ' ' '\n' '\t' ]
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"
| "Extraction" space+ (("Language" space+ ("Ocaml"|"Haskell"|"Scheme"|"Toplevel"))|
("Library"|"Inline"|"NoInline"|"Blacklist"))
| "Recursive" space+ "Extraction" (space+ "Library")?
| ("Print"|"Reset") space+ "Extraction" space+ ("Inline"|"Blacklist")
| "Extract" space+ (("Inlined" space+) "Constant"| "Inductive")
(* At least still missing: "Inline" + decl, variants of "Identity
Coercion", variants of Print, Add, ... *)
rule coq_string = parse
| "\"\"" { coq_string lexbuf }
| "\"" { Lexing.lexeme_end lexbuf }
| eof { Lexing.lexeme_end lexbuf }
| _ { coq_string lexbuf }
and comment = parse
| "(*" { ignore (comment lexbuf); comment lexbuf }
| "\"" { ignore (coq_string lexbuf); comment lexbuf }
| "*)" { Lexing.lexeme_end lexbuf }
| eof { Lexing.lexeme_end lexbuf }
| _ { comment lexbuf }
and sentence stamp = parse
| space+ { sentence stamp lexbuf }
| "(*" {
let comm_start = Lexing.lexeme_start lexbuf in
let comm_end = comment lexbuf in
stamp comm_start comm_end Comment;
sentence stamp lexbuf
}
| "\"" {
let str_start = Lexing.lexeme_start lexbuf in
let str_end = coq_string lexbuf in
stamp str_start str_end String;
start := false;
sentence stamp lexbuf
}
| multiword_declaration {
if !start then begin
start := false;
stamp (Lexing.lexeme_start lexbuf) (Lexing.lexeme_end lexbuf) Declaration
end;
sentence stamp lexbuf
}
| multiword_command {
if !start then begin
start := false;
stamp (Lexing.lexeme_start lexbuf) (Lexing.lexeme_end lexbuf) Keyword
end;
sentence stamp lexbuf }
| ident as id {
if !start then begin
start := false;
if id <> "Time" then begin
if is_proof_end id then
stamp (Lexing.lexeme_start lexbuf) (Lexing.lexeme_end lexbuf) Qed
else if is_one_word_command id then
stamp (Lexing.lexeme_start lexbuf) (Lexing.lexeme_end lexbuf) Keyword
else if is_one_word_declaration id then
stamp (Lexing.lexeme_start lexbuf) (Lexing.lexeme_end lexbuf) Declaration
else if is_proof_declaration id then
stamp (Lexing.lexeme_start lexbuf) (Lexing.lexeme_end lexbuf) ProofDeclaration
end
end else begin
if is_constr_kw id then
stamp (Lexing.lexeme_start lexbuf) (Lexing.lexeme_end lexbuf) Keyword
end;
sentence stamp lexbuf }
| ".."
| _ { sentence stamp lexbuf}
| sentence_sep { }
| eof { raise Not_found }
{
let find_end_offset stamp slice =
let lb = Lexing.from_string slice in
start := true;
sentence stamp lb;
Lexing.lexeme_end lb
}
|
