Quelle rocqwc.mll Sprache: SML

(************************************************************************)
(*         *      The Rocq Prover / The Rocq Development Team           *)
(*  v      *         Copyright INRIA, CNRS and contributors             *)
(* <O___,, * (see version control and CREDITS file for authors & dates) *)
(*   \VV/  **************************************************************)
(*    //   *    This file is distributed under the terms of the         *)
(*         *     GNU Lesser General Public License Version 2.1          *)
(*         *     (see LICENSE file for the text of the license)         *)
(************************************************************************)

(* rocq wc - counts the lines of spec, proof and comments in Rocq sources
* Copyright (C) 2003 Jean-Christophe Filliâtre *)

(*s {\bf rocq wc.} Counts the lines of spec, proof and comments in a Rocq source.
    It assumes the files to be lexically well-formed. *)

(*i*){
open Printf
open Lexing
(*i*)

(*s Command-line options. *)

let spec_only = ref false
let proof_only = ref false
let percentage = ref false
let skip_header = ref true

(*s Counters. [clines] counts the number of code lines of the current
    file, and [dlines] the number of comment lines. [tclines] and [tdlines]
    are the corresponding totals. *)

let slines = ref 0
let plines = ref 0
let dlines = ref 0

let tslines = ref 0
let tplines = ref 0
let tdlines = ref 0

let update_totals () =
  tslines := !tslines + !slines;
  tplines := !tplines + !plines;
  tdlines := !tdlines + !dlines

(*s The following booleans indicate whether we have seen spec, proof or
    comment so far on the current line; when a newline is reached, [newline]
    is called and updates the counters accordingly. *)

let seen_spec = ref false
let seen_proof = ref false
let seen_comment = ref false

let newline () =
  if !seen_spec then incr slines;
  if !seen_proof then incr plines;
  if !seen_comment then incr dlines;
  seen_spec := false; seen_proof := false; seen_comment := false

let reset_counters () =
  seen_spec := false; seen_proof := false; seen_comment := false;
  slines := 0; plines := 0; dlines := 0

(*s Print results. *)

let print_line sl pl dl fo =
  if not !proof_only then printf " %8d" sl;
  if not !spec_only then printf " %8d" pl;
  if not (!proof_only || !spec_only) then printf " %8d" dl;
  (match fo with Some f -> printf " %s" f | _ -> ());
  if !percentage then begin
    let s = sl + pl + dl in
    let p = if s > 0 then 100 * dl / s else 0 in
    printf " (%d%%)" p
  end;
  print_newline ()

let print_file fo = print_line !slines !plines !dlines fo

let print_totals () = print_line !tslines !tplines !tdlines (Some "total")

(*i*)}(*i*)

(*s Shortcuts for regular expressions. The [rcs] regular expression
    is used to skip the CVS infos possibly contained in some comments,
    in order not to consider it as documentation. *)

let space = [' ' '\t' '\r']
let character =
  "'" ([^ '\\' '\''] |
       '\\' (['\\' '\'' 'n' 't' 'b' 'r'] | ['0'-'9'] ['0'-'9'] ['0'-'9'])) "'"
let rcs_keyword =
  "Author" | "Date" | "Header" | "Id" | "Name" | "Locker" | "Log" |
  "RCSfile" | "Revision" | "Source" | "State"
let rcs = "\036" rcs_keyword [^ '$']* "\036"
let stars = "(*" '*'* "*)"
let dot = '.' (' ' | '\t' | '\n' | '\r' | eof)
let proof_start =
  "Theorem" | "Lemma" | "Fact" | "Remark" | "Goal" | "Correctness" | "Obligation" space+ (['0' - '9'])+ | "Next" space+ "Obligation"
let def_start =
  "Definition" | "Fixpoint" | "Instance"
let proof_end =
  ("Save" | "Qed" | "Defined" | "Abort" | "Admitted") [^'.']* '.'

(*s [spec] scans the specification. *)

rule spec = parse
  | "(*" { comment lexbuf; spec lexbuf }
  | '"'    { let n = string lexbuf in slines := !slines + n;
             seen_spec := true; spec lexbuf }
  | '\n'   { newline (); spec lexbuf }
  | space+ | stars
           { spec lexbuf }
  | proof_start
           { seen_spec := true; spec_to_dot lexbuf; proof lexbuf }
  | def_start
           { seen_spec := true; definition lexbuf }
  | character | _
           { seen_spec := true; spec lexbuf }
  | eof    { () }

(*s [spec_to_dot] scans a spec until a dot is reached and returns. *)

and spec_to_dot = parse
  | "(*" { comment lexbuf; spec_to_dot lexbuf }
  | '"'    { let n = string lexbuf in slines := !slines + n;
             seen_spec := true; spec_to_dot lexbuf }
  | '\n'   { newline (); spec_to_dot lexbuf }
  | dot    { () }
  | space+ | stars
           { spec_to_dot lexbuf }
  | character | _
           { seen_spec := true; spec_to_dot lexbuf }
  | eof    { () }

(*s [definition] scans a definition; passes to [proof] if the body is
    absent, and to [spec] otherwise *)

and definition = parse
  | "(*" { comment lexbuf; definition lexbuf }
  | '"'    { let n = string lexbuf in slines := !slines + n;
             seen_spec := true; definition lexbuf }
  | '\n'   { newline (); definition lexbuf }
  | ":="   { seen_spec := true; spec lexbuf }
  | dot    { proof lexbuf }
  | space+ | stars
           { definition lexbuf }
  | character | _
           { seen_spec := true; definition lexbuf }
  | eof    { () }

(*s Scans a proof, then returns to [spec]. *)

and proof = parse
  | "(*" { comment lexbuf; proof lexbuf }
  | '"'    { let n = string lexbuf in plines := !plines + n;
             seen_proof := true; proof lexbuf }
  | space+ | stars
           { proof lexbuf }
  | '\n'   { newline (); proof lexbuf }
  | "Proof" space* '.'
  | "Proof" space+ "with"
  | "Proof" space+ "using"
           { seen_proof := true; proof lexbuf }
  | "Proof" space
           { proof_term lexbuf }
  | proof_end
           { seen_proof := true; spec lexbuf }
  | character | _
           { seen_proof := true; proof lexbuf }
  | eof    { () }

and proof_term = parse
  | "(*" { comment lexbuf; proof_term lexbuf }
  | '"'    { let n = string lexbuf in plines := !plines + n;
             seen_proof := true; proof_term lexbuf }
  | space+ | stars
           { proof_term lexbuf }
  | '\n'   { newline (); proof_term lexbuf }
  | dot    { spec lexbuf }
  | character | _
           { seen_proof := true; proof_term lexbuf }
  | eof    { () }

(*s Scans a comment. *)

and comment = parse
  | "(*" { comment lexbuf; comment lexbuf }
  | "*)"   { () }
  | '"'    { let n = string lexbuf in dlines := !dlines + n;
             seen_comment := true; comment lexbuf }
  | '\n'   { newline (); comment lexbuf }
  | space+ | stars
           { comment lexbuf }
  | character | _
           { seen_comment := true; comment lexbuf }
  | eof    { () }

(*s The entry [string] reads a string until its end and returns the number
    of newlines it contains. *)

and string = parse
  | '"'  { 0 }
  | '\\' ('\\' | 'n' | '"') { string lexbuf }
  | '\n' { succ (string lexbuf) }
  | _    { string lexbuf }
  | eof  { 0 }

(*s The following entry [read_header] is used to skip the possible header at
    the beginning of files (unless option \texttt{-e} is specified).
    It stops whenever it encounters an empty line or any character outside
    a comment. In this last case, it correctly resets the lexer position
    on that character (decreasing [lex_curr_pos] by 1). *)

and read_header = parse
  | "(*" { skip_comment lexbuf; skip_until_nl lexbuf;
             read_header lexbuf }
  | "\n"   { () }
  | space+ { read_header lexbuf }
  | _      { lexbuf.lex_curr_pos <- lexbuf.lex_curr_pos - 1 }
  | eof    { () }

and skip_comment = parse
  | "*)" { () }
  | "(*" { skip_comment lexbuf; skip_comment lexbuf }
  | _    { skip_comment lexbuf }
  | eof  { () }

and skip_until_nl = parse
  | '\n' { () }
  | _    { skip_until_nl lexbuf }
  | eof  { () }

(*i*){(*i*)

(*s Processing files and channels. *)

let process_channel ch =
  let lb = Lexing.from_channel ch in
  reset_counters ();
  if !skip_header then read_header lb;
  spec lb

let process_file f =
  try
    let ch = open_in f in
    process_channel ch;
    close_in ch;
    print_file (Some f);
    update_totals ()
  with
    | Sys_error s ->
        flush stdout; eprintf "rocq wc: %s: %s\n" f s; flush stderr

(*s Parsing of the command line. *)

let usage () =
  prerr_endline "usage: rocq wc [options] [files]";
  prerr_endline "Options are:";
  prerr_endline " -p print percentage of comments";
  prerr_endline " -s print only the spec size";
  prerr_endline " -r print only the proof size";
  prerr_endline " -e (everything) do not skip headers";
  exit 1

let rec parse = function
  | [] -> []
  | ("-h" | "-?" | "-help" | "--help") :: _ -> usage ()
  | ("-s" | "--spec-only") :: args ->
      proof_only := false; spec_only := true; parse args
  | ("-r" | "--proof-only") :: args ->
      spec_only := false; proof_only := true; parse args
  | ("-p" | "--percentage") :: args -> percentage := true; parse args
  | ("-e" | "--header") :: args -> skip_header := false; parse args
  | f :: args -> f :: (parse args)

(*s Main program. *)

let main args =
  let files = parse args in
  if not (!spec_only || !proof_only) then
    printf " spec proof comments\n";
  match files with
    | [] -> process_channel stdin; print_file None
    | [f] -> process_file f
    | _ -> List.iter process_file files; print_totals ()

(*i*)}(*i*)

quality95%

¤ Dauer der Verarbeitung: 0.2 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.