popl09/pretty_print_popl.ml

   1 (*
   2  * Copyright 2010, INRIA, University of Copenhagen
   3  * Julia Lawall, Rene Rydhof Hansen, Gilles Muller, Nicolas Palix
   4  * Copyright 2005-2009, Ecole des Mines de Nantes, University of Copenhagen
   5  * Yoann Padioleau, Julia Lawall, Rene Rydhof Hansen, Henrik Stuart, Gilles Muller, Nicolas Palix
   6  * This file is part of Coccinelle.
   7  *
   8  * Coccinelle is free software: you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation, according to version 2 of the License.
  11  *
  12  * Coccinelle is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with Coccinelle.  If not, see <http://www.gnu.org/licenses/>.
  19  *
  20  * The authors reserve the right to distribute this or future versions of
  21  * Coccinelle under other licenses.
  22  *)
  23
  24
  25 open Format
  26 module Past = Ast_popl
  27 module Ast = Ast_cocci
  28
  29 let start_block str =
  30   force_newline(); print_string "  "; open_box 0
  31
  32 let end_block str =
  33   close_box(); force_newline ()
  34
  35 (* --------------------------------------------------------------------- *)
  36
  37 let print_around printer term = function
  38     Ast.NOTHING -> printer term
  39   | Ast.BEFORE(bef,_) ->
  40       Pretty_print_cocci.print_anything "<<< " bef; printer term
  41   | Ast.AFTER(aft,_) ->
  42       printer term; Pretty_print_cocci.print_anything ">>> " aft
  43   | Ast.BEFOREAFTER(bef,aft,_) ->
  44       Pretty_print_cocci.print_anything "<<< " bef; printer term;
  45       Pretty_print_cocci.print_anything ">>> " aft
  46
  47 let mcode fn = function
  48     (x, _, Ast.MINUS(_,_,_,plus_stream), pos) ->
  49       print_string "-"; fn x;
  50       (match plus_stream with
  51         Ast.NOREPLACEMENT -> ()
  52       | Ast.REPLACEMENT(plus_stream,_) ->
  53           Pretty_print_cocci.print_anything ">>> " plus_stream)
  54   | (x, _, Ast.CONTEXT(_,plus_streams), pos) ->
  55         print_around fn x plus_streams
  56   | (x, info, Ast.PLUS _, pos) -> fn x
  57
  58 (* --------------------------------------------------------------------- *)
  59
  60 let rec print_sequence = function
  61     Past.Seq(e,seq) -> print_element e; force_newline(); print_sequence seq
  62   | Past.Empty -> ()
  63   | Past.SExists((_,v),seq) -> print_string "exists "; print_string v;
  64       print_string " ."; force_newline(); print_sequence seq
  65
  66 and print_term = function
  67     Past.Atomic(term) -> Pretty_print_cocci.rule_elem "" term
  68   | Past.IfThen(test,thn,(_,_,_,aft)) ->
  69       print_term test; print_term thn;
  70       mcode (function _ -> ()) ((),Ast.no_info,aft,[])
  71   | Past.TExists((_,v),term) -> print_string "exists "; print_string v;
  72       print_string " ."; force_newline(); print_term term
  73
  74 and print_element = function
  75     Past.Term(term,_) -> print_term term
  76   | Past.Or(seq1,seq2) ->
  77       force_newline(); print_string "("; force_newline(); print_sequence seq1;
  78       print_string "|"; force_newline(); print_sequence seq2; print_string ")"
  79   | Past.DInfo(dots) ->
  80       start_block();
  81       print_dots dots;
  82       end_block()
  83   | Past.EExists((_,v),elem) -> print_string "exists "; print_string v;
  84       print_string " ."; force_newline(); print_element elem
  85
  86 and print_dots = function
  87     Past.Dots -> print_string "..."
  88   | Past.Nest(seq)-> print_string "<..."; start_block(); print_sequence seq;
  89       end_block(); print_string "...>"
  90   | Past.When(dots,seq) -> print_dots dots; print_string " when != ";
  91       open_box 0; print_sequence seq; close_box()
  92
  93 (* --------------------------------------------------------------------- *)
  94
  95 let pretty_print_e e =
  96   print_element e;
  97   print_newline()
  98
  99 let pretty_print sl =
 100   print_sequence sl;
 101   print_newline()
 102