Copyright (c) 2000 California Institute of Technology 
 All rights reserved. See the file COPYRIGHT for a full description. 
 $Id: BracedCode.i3,v 1.2 2001-09-19 15:03:34 wagner Exp $ 
INTERFACE BracedCode;
IMPORT Rd, CharRange;
PROCEDURE FindChar(rd: Rd.T; which: CharRange.T) RAISES {Rd.EndOfFile};
 advance rd past a character specified in which, skipping
   nested comments and braces, and quoted chars and strings. 
PROCEDURE Match(rd: Rd.T): TEXT;
 on entry: rd positionned following '{' in src.
   on exit: rd positionned following matching '}' in src, or EOF if none.
   return value: the text in between the braces 
PROCEDURE GetAhead(rd: Rd.T): TEXT;
 on entry: rd positionned before either {...} or other stuff.
   if other stuff, rewind rd to position on entry, and return 
END BracedCode.