cabshelper.ml

(* 
 *
 * Copyright (c) 2001-2002, 
 *  George C. Necula    <necula@cs.berkeley.edu>
 *  Scott McPeak        <smcpeak@cs.berkeley.edu>
 *  Wes Weimer          <weimer@cs.berkeley.edu>
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * 3. The names of the contributors may not be used to endorse or promote
 * products derived from this software without specific prior written
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *)
 
open Cabs

let msvcMode = ref false

let nextident = ref 0
let getident () =
    nextident := !nextident + 1;
    !nextident

let currentLoc () = 
  let l, f, c, bytestart, sysHeader = Errormsg.getPosition () in
  { lineno   = l; 
    filename = f; 
    byteno   = c;
    ident    = getident ();
	lineOffsetStart = bytestart;
	systemHeader = sysHeader;
	}

let cabslu = {lineno = -10; 
	      filename = "cabs loc unknown"; 
	      byteno = -10;
              ident = 0;
			  lineOffsetStart = 0;
			  systemHeader = false;
			 }

(* clexer puts comments here *)
let commentsGA = GrowArray.make 100 (GrowArray.Elem(cabslu,"",false))


(*********** HELPER FUNCTIONS **********)

let missingFieldDecl = ("___missing_field_name", JUSTBASE, [], cabslu)

let rec isTypedef = function
    [] -> false
  | SpecTypedef :: _ -> true
  | _ :: rest -> isTypedef rest

let explodeStringToInts (s: string) : int64 list =  
  let rec allChars i acc = 
    if i < 0 then acc
    else allChars (i - 1) (Int64.of_int (Char.code (String.get s i)) :: acc)
  in
  allChars (-1 + String.length s) []

let valueOfDigit chr =
  let int_value = 
    match chr with
      '0'..'9' -> (Char.code chr) - (Char.code '0')
    | 'a'..'z' -> (Char.code chr) - (Char.code 'a') + 10
    | 'A'..'Z' -> (Char.code chr) - (Char.code 'A') + 10
    | _ -> Errormsg.s ("Bug: not a digit") in
  Int64.of_int int_value