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			1878 lines
		
	
	
		
			52 KiB
		
	
	
	
		
			ObjectPascal
		
	
	
	
	
	
			
		
		
	
	
			1878 lines
		
	
	
		
			52 KiB
		
	
	
	
		
			ObjectPascal
		
	
	
	
	
	
| {
 | |
|     $Id$
 | |
|     Copyright (c) 1998-2000 by Florian Klaempfl
 | |
| 
 | |
|     This unit implements the scanner part and handling of the switches
 | |
| 
 | |
|     This program is free software; you can redistribute it and/or modify
 | |
|     it under the terms of the GNU General Public License as published by
 | |
|     the Free Software Foundation; either version 2 of the License, or
 | |
|     (at your option) any later version.
 | |
| 
 | |
|     This program is distributed in the hope that it will be useful,
 | |
|     but WITHOUT ANY WARRANTY; without even the implied warranty of
 | |
|     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 | |
|     GNU General Public License for more details.
 | |
| 
 | |
|     You should have received a copy of the GNU General Public License
 | |
|     along with this program; if not, write to the Free Software
 | |
|     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 | |
| 
 | |
|  ****************************************************************************
 | |
| }
 | |
| {$ifdef tp}
 | |
|   {$F+,N+,E+,R-}
 | |
| {$endif}
 | |
| unit scanner;
 | |
| 
 | |
|   interface
 | |
| 
 | |
|     uses
 | |
| {$ifdef Delphi}
 | |
|        dmisc,
 | |
| {$endif Delphi}
 | |
|        globtype,version,tokens,
 | |
|        cobjects,globals,verbose,comphook,files;
 | |
| 
 | |
|     const
 | |
| {$ifdef TP}
 | |
|        maxmacrolen=1024;
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|        preprocbufsize=1024;
 | |
| {$else}
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|        maxmacrolen=16*1024;
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|        preprocbufsize=32*1024;
 | |
| {$endif}
 | |
|        Newline = #10;
 | |
| 
 | |
| 
 | |
|     type
 | |
|        tcommentstyle = (comment_none,comment_tp,comment_oldtp,comment_delphi,comment_c);
 | |
| 
 | |
|        pmacrobuffer = ^tmacrobuffer;
 | |
|        tmacrobuffer = array[0..maxmacrolen-1] of char;
 | |
| 
 | |
|        preproctyp = (pp_ifdef,pp_ifndef,pp_if,pp_ifopt,pp_else);
 | |
|        ppreprocstack = ^tpreprocstack;
 | |
|        tpreprocstack = object
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|           typ     : preproctyp;
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|           accept  : boolean;
 | |
|           next    : ppreprocstack;
 | |
|           name    : stringid;
 | |
|           line_nb : longint;
 | |
|           constructor init(atyp:preproctyp;a:boolean;n:ppreprocstack);
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|           destructor done;
 | |
|        end;
 | |
| 
 | |
|        pscannerfile = ^tscannerfile;
 | |
|        tscannerfile = object
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|           inputfile    : pinputfile;  { current inputfile list }
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| 
 | |
|           inputbuffer,                { input buffer }
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|           inputpointer : pchar;
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|           inputstart   : longint;
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| 
 | |
|           line_no,                    { line }
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|           lastlinepos  : longint;
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| 
 | |
|           lasttokenpos : longint;     { token }
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|           lasttoken,
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|           nexttoken    : ttoken;
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| 
 | |
|           comment_level,
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|           yylexcount     : longint;
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|           lastasmgetchar : char;
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|           preprocstack   : ppreprocstack;
 | |
|           invalid        : boolean; { flag if sourcefiles have been destroyed ! }
 | |
| 
 | |
|           constructor init(const fn:string);
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|           destructor done;
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|         { File buffer things }
 | |
|           function  openinputfile:boolean;
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|           procedure closeinputfile;
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|           function  tempopeninputfile:boolean;
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|           procedure tempcloseinputfile;
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|           procedure saveinputfile;
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|           procedure restoreinputfile;
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|           procedure nextfile;
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|           procedure addfile(hp:pinputfile);
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|           procedure reload;
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|           procedure insertmacro(const macname:string;p:pchar;len:longint);
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|         { Scanner things }
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|           procedure gettokenpos;
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|           procedure inc_comment_level;
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|           procedure dec_comment_level;
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|           procedure end_of_file;
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|           procedure checkpreprocstack;
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|           procedure poppreprocstack;
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|           procedure addpreprocstack(atyp : preproctyp;a:boolean;const s:string;w:tmsgconst);
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|           procedure elsepreprocstack;
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|           procedure linebreak;
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|           procedure readchar;
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|           procedure readstring;
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|           procedure readnumber;
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|           function  readid:string;
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|           function  readval:longint;
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|           function  readcomment:string;
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|           function  readstate:char;
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|           procedure skipspace;
 | |
|           procedure skipuntildirective;
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|           procedure skipcomment;
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|           procedure skipdelphicomment;
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|           procedure skipoldtpcomment;
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|           procedure readtoken;
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|           function  readpreproc:ttoken;
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|           function  asmgetchar:char;
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|        end;
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| 
 | |
|        ppreprocfile=^tpreprocfile;
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|        tpreprocfile=object
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|          f   : text;
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|          buf : pointer;
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|          spacefound,
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|          eolfound : boolean;
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|          constructor init(const fn:string);
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|          destructor  done;
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|          procedure Add(const s:string);
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|          procedure AddSpace;
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|        end;
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| 
 | |
| 
 | |
|     var
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|         c              : char;
 | |
|         orgpattern,
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|         pattern        : string;
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|         current_scanner : pscannerfile;
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|         aktcommentstyle : tcommentstyle; { needed to use read_comment from directives }
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| 
 | |
|         preprocfile : ppreprocfile; { used with only preprocessing }
 | |
| 
 | |
| 
 | |
| implementation
 | |
| 
 | |
|     uses
 | |
| {$ifndef delphi}
 | |
|       dos,
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| {$endif delphi}
 | |
|       systems,symtable,switches;
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| 
 | |
| {*****************************************************************************
 | |
|                               Helper routines
 | |
| *****************************************************************************}
 | |
| 
 | |
|     const
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|       { use any special name that is an invalid file name to avoid problems }
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|       preprocstring : array [preproctyp] of string[7]
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|         = ('$IFDEF','$IFNDEF','$IF','$IFOPT','$ELSE');
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| 
 | |
| 
 | |
|     function is_keyword(const s:string):boolean;
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|       var
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|         low,high,mid : longint;
 | |
|       begin
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|         if not (length(s) in [2..tokenidlen]) then
 | |
|          begin
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|            is_keyword:=false;
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|            exit;
 | |
|          end;
 | |
|         low:=ord(tokenidx^[length(s),s[1]].first);
 | |
|         high:=ord(tokenidx^[length(s),s[1]].last);
 | |
|         while low<high do
 | |
|          begin
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|            mid:=(high+low+1) shr 1;
 | |
|            if pattern<tokeninfo^[ttoken(mid)].str then
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|             high:=mid-1
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|            else
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|             low:=mid;
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|          end;
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|         is_keyword:=(pattern=tokeninfo^[ttoken(high)].str) and
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|                     (tokeninfo^[ttoken(high)].keyword in aktmodeswitches);
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|       end;
 | |
| 
 | |
| 
 | |
| {*****************************************************************************
 | |
|                             Preprocessor writting
 | |
| *****************************************************************************}
 | |
| 
 | |
|     constructor tpreprocfile.init(const fn:string);
 | |
|       begin
 | |
|       { open outputfile }
 | |
|         assign(f,fn);
 | |
|         {$I-}
 | |
|          rewrite(f);
 | |
|         {$I+}
 | |
|         if ioresult<>0 then
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|          Comment(V_Fatal,'can''t create file '+fn);
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|         getmem(buf,preprocbufsize);
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|         settextbuf(f,buf^,preprocbufsize);
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|       { reset }
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|         eolfound:=false;
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|         spacefound:=false;
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|       end;
 | |
| 
 | |
| 
 | |
|     destructor tpreprocfile.done;
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|       begin
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|         close(f);
 | |
|         freemem(buf,preprocbufsize);
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|       end;
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| 
 | |
| 
 | |
|     procedure tpreprocfile.add(const s:string);
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|       begin
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|         write(f,s);
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|       end;
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| 
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|     procedure tpreprocfile.addspace;
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|       begin
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|         if eolfound then
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|          begin
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|            writeln(f,'');
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|            eolfound:=false;
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|            spacefound:=false;
 | |
|          end
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|         else
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|          if spacefound then
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|           begin
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|             write(f,' ');
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|             spacefound:=false;
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|           end;
 | |
|       end;
 | |
| 
 | |
| 
 | |
| {*****************************************************************************
 | |
|                               TPreProcStack
 | |
| *****************************************************************************}
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| 
 | |
|     constructor tpreprocstack.init(atyp : preproctyp;a:boolean;n:ppreprocstack);
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|       begin
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|         accept:=a;
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|         typ:=atyp;
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|         next:=n;
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|       end;
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| 
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| 
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|     destructor tpreprocstack.done;
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|       begin
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|       end;
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| 
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| 
 | |
| {****************************************************************************
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|                                 TSCANNERFILE
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|  ****************************************************************************}
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| 
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|     constructor tscannerfile.init(const fn:string);
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|       begin
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|         inputfile:=new(pinputfile,init(fn));
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|         current_module^.sourcefiles^.register_file(inputfile);
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|       { reset localinput }
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|         inputbuffer:=nil;
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|         inputpointer:=nil;
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|         inputstart:=0;
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|       { reset scanner }
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|         preprocstack:=nil;
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|         comment_level:=0;
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|         yylexcount:=0;
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|         block_type:=bt_general;
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|         line_no:=0;
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|         lastlinepos:=0;
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|         lasttokenpos:=0;
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|         lasttoken:=NOTOKEN;
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|         nexttoken:=NOTOKEN;
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|         lastasmgetchar:=#0;
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|         invalid:=false;
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|       { load block }
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|         if not openinputfile then
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|          Message1(scan_f_cannot_open_input,fn);
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|         reload;
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|       { process first read char }
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|         case c of
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|          #26 : reload;
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|          #10,
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|          #13 : linebreak;
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|         end;
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|       end;
 | |
| 
 | |
| 
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|     destructor tscannerfile.done;
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|       begin
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|         if not invalid then
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|           begin
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|              if status.errorcount=0 then
 | |
|               checkpreprocstack;
 | |
|            { close file, but only if we are the first compile }
 | |
|            { probably not necessary anymore with invalid flag PM }
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|              if not current_module^.in_second_compile then
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|               begin
 | |
|                 if not inputfile^.closed then
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|                  closeinputfile;
 | |
|               end;
 | |
|           end;
 | |
|        end;
 | |
| 
 | |
| 
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|     function tscannerfile.openinputfile:boolean;
 | |
|       begin
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|         openinputfile:=inputfile^.open;
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|       { load buffer }
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|         inputbuffer:=inputfile^.buf;
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|         inputpointer:=inputfile^.buf;
 | |
|         inputstart:=inputfile^.bufstart;
 | |
|       { line }
 | |
|         line_no:=0;
 | |
|         lastlinepos:=0;
 | |
|         lasttokenpos:=0;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.closeinputfile;
 | |
|       begin
 | |
|         inputfile^.close;
 | |
|       { reset buffer }
 | |
|         inputbuffer:=nil;
 | |
|         inputpointer:=nil;
 | |
|         inputstart:=0;
 | |
|       { reset line }
 | |
|         line_no:=0;
 | |
|         lastlinepos:=0;
 | |
|         lasttokenpos:=0;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tscannerfile.tempopeninputfile:boolean;
 | |
|       begin
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|         tempopeninputfile:=inputfile^.tempopen;
 | |
|       { reload buffer }
 | |
|         inputbuffer:=inputfile^.buf;
 | |
|         inputpointer:=inputfile^.buf;
 | |
|         inputstart:=inputfile^.bufstart;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.tempcloseinputfile;
 | |
|       begin
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|         inputfile^.setpos(inputstart+(inputpointer-inputbuffer));
 | |
|         inputfile^.tempclose;
 | |
|       { reset buffer }
 | |
|         inputbuffer:=nil;
 | |
|         inputpointer:=nil;
 | |
|         inputstart:=0;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.saveinputfile;
 | |
|       begin
 | |
|         inputfile^.saveinputpointer:=inputpointer;
 | |
|         inputfile^.savelastlinepos:=lastlinepos;
 | |
|         inputfile^.saveline_no:=line_no;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.restoreinputfile;
 | |
|       begin
 | |
|         inputpointer:=inputfile^.saveinputpointer;
 | |
|         lastlinepos:=inputfile^.savelastlinepos;
 | |
|         line_no:=inputfile^.saveline_no;
 | |
|         if not inputfile^.is_macro then
 | |
|           parser_current_file:=inputfile^.name^;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.nextfile;
 | |
|       var
 | |
|         to_dispose : pinputfile;
 | |
|       begin
 | |
|         if assigned(inputfile^.next) then
 | |
|          begin
 | |
|            if inputfile^.is_macro then
 | |
|              to_dispose:=inputfile
 | |
|            else
 | |
|              to_dispose:=nil;
 | |
|            { we can allways close the file, no ? }
 | |
|            inputfile^.close;
 | |
|            inputfile:=inputfile^.next;
 | |
|            if assigned(to_dispose) then
 | |
|              dispose(to_dispose,done);
 | |
|            restoreinputfile;
 | |
|          end;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.addfile(hp:pinputfile);
 | |
|       begin
 | |
|         saveinputfile;
 | |
|       { add to list }
 | |
|         hp^.next:=inputfile;
 | |
|         inputfile:=hp;
 | |
|       { load new inputfile }
 | |
|         restoreinputfile;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.reload;
 | |
|       begin
 | |
|         with inputfile^ do
 | |
|          begin
 | |
|            { when nothing more to read then leave immediatly, so we
 | |
|              don't change the aktfilepos and leave it point to the last
 | |
|              char }
 | |
|            if (c=#26) and (not assigned(next)) then
 | |
|             exit;
 | |
|            repeat
 | |
|            { still more to read?, then change the #0 to a space so its seen
 | |
|              as a seperator, this can't be used for macro's which can change
 | |
|              the place of the #0 in the buffer with tempopen }
 | |
|              if (c=#0) and (bufsize>0) and
 | |
|                 not(inputfile^.is_macro) and
 | |
|                 (inputpointer-inputbuffer<bufsize) then
 | |
|               begin
 | |
|                 c:=' ';
 | |
|                 inc(longint(inputpointer));
 | |
|                 exit;
 | |
|               end;
 | |
|            { can we read more from this file ? }
 | |
|              if (c<>#26) and (not endoffile) then
 | |
|               begin
 | |
|                 readbuf;
 | |
|                 inputpointer:=buf;
 | |
|                 inputbuffer:=buf;
 | |
|                 inputstart:=bufstart;
 | |
|               { first line? }
 | |
|                 if line_no=0 then
 | |
|                  begin
 | |
|                    line_no:=1;
 | |
|                    if cs_asm_source in aktglobalswitches then
 | |
|                      inputfile^.setline(line_no,bufstart);
 | |
|                  end;
 | |
|               end
 | |
|              else
 | |
|               begin
 | |
|               { load eof position in tokenpos/aktfilepos }
 | |
|                 gettokenpos;
 | |
|               { close file }
 | |
|                 closeinputfile;
 | |
|               { no next module, than EOF }
 | |
|                 if not assigned(inputfile^.next) then
 | |
|                  begin
 | |
|                    c:=#26;
 | |
|                    exit;
 | |
|                  end;
 | |
|               { load next file and reopen it }
 | |
|                 nextfile;
 | |
|                 tempopeninputfile;
 | |
|               { status }
 | |
|                 Message1(scan_t_back_in,inputfile^.name^);
 | |
|               end;
 | |
|            { load next char }
 | |
|              c:=inputpointer^;
 | |
|              inc(longint(inputpointer));
 | |
|            until c<>#0; { if also end, then reload again }
 | |
|          end;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.insertmacro(const macname:string;p:pchar;len:longint);
 | |
|       var
 | |
|         hp : pinputfile;
 | |
|       begin
 | |
|       { save old postion and decrease linebreak }
 | |
|         if c=newline then
 | |
|          dec(line_no);
 | |
|         dec(longint(inputpointer));
 | |
|         tempcloseinputfile;
 | |
|       { create macro 'file' }
 | |
|         { use special name to dispose after !! }
 | |
|         hp:=new(pinputfile,init('_Macro_.'+macname));
 | |
|         addfile(hp);
 | |
|         with inputfile^ do
 | |
|          begin
 | |
|            setmacro(p,len);
 | |
|          { local buffer }
 | |
|            inputbuffer:=buf;
 | |
|            inputpointer:=buf;
 | |
|            inputstart:=bufstart;
 | |
|          end;
 | |
|       { reset line }
 | |
|         line_no:=0;
 | |
|         lastlinepos:=0;
 | |
|         lasttokenpos:=0;
 | |
|       { load new c }
 | |
|         c:=inputpointer^;
 | |
|         inc(longint(inputpointer));
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.gettokenpos;
 | |
|     { load the values of tokenpos and lasttokenpos }
 | |
|       begin
 | |
|         lasttokenpos:=inputstart+(inputpointer-inputbuffer);
 | |
|         tokenpos.line:=line_no;
 | |
|         tokenpos.column:=lasttokenpos-lastlinepos;
 | |
|         tokenpos.fileindex:=inputfile^.ref_index;
 | |
|         aktfilepos:=tokenpos;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.inc_comment_level;
 | |
|       var
 | |
|          oldaktfilepos : tfileposinfo;
 | |
|       begin
 | |
|          if (m_nested_comment in aktmodeswitches) then
 | |
|            inc(comment_level)
 | |
|          else
 | |
|            comment_level:=1;
 | |
|          if (comment_level>1) then
 | |
|           begin
 | |
|              oldaktfilepos:=aktfilepos;
 | |
|              gettokenpos; { update for warning }
 | |
|              Message1(scan_w_comment_level,tostr(comment_level));
 | |
|              aktfilepos:=oldaktfilepos;
 | |
|           end;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.dec_comment_level;
 | |
|       begin
 | |
|          if (m_nested_comment in aktmodeswitches) then
 | |
|            dec(comment_level)
 | |
|          else
 | |
|            comment_level:=0;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.linebreak;
 | |
|       var
 | |
|          cur : char;
 | |
|          oldtokenpos,
 | |
|          oldaktfilepos : tfileposinfo;
 | |
|       begin
 | |
|         with inputfile^ do
 | |
|          begin
 | |
|            if (byte(inputpointer^)=0) and not(endoffile) then
 | |
|             begin
 | |
|               cur:=c;
 | |
|               reload;
 | |
|               if byte(cur)+byte(c)<>23 then
 | |
|                 dec(longint(inputpointer));
 | |
|             end
 | |
|            else
 | |
|             begin
 | |
|             { Fix linebreak to be only newline (=#10) for all types of linebreaks }
 | |
|               if (byte(inputpointer^)+byte(c)=23) then
 | |
|                 inc(longint(inputpointer));
 | |
|             end;
 | |
|            c:=newline;
 | |
|          { increase line counters }
 | |
|            lastlinepos:=bufstart+(inputpointer-inputbuffer);
 | |
|            inc(line_no);
 | |
|          { update linebuffer }
 | |
|            if cs_asm_source in aktglobalswitches then
 | |
|              inputfile^.setline(line_no,lastlinepos);
 | |
|          { update for status and call the show status routine,
 | |
|            but don't touch aktfilepos ! }
 | |
|            oldaktfilepos:=aktfilepos;
 | |
|            oldtokenpos:=tokenpos;
 | |
|            gettokenpos; { update for v_status }
 | |
|            inc(status.compiledlines);
 | |
|            ShowStatus;
 | |
|            aktfilepos:=oldaktfilepos;
 | |
|            tokenpos:=oldtokenpos;
 | |
|          end;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.end_of_file;
 | |
|       begin
 | |
|         checkpreprocstack;
 | |
|         Message(scan_f_end_of_file);
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.checkpreprocstack;
 | |
|       begin
 | |
|       { check for missing ifdefs }
 | |
|         while assigned(preprocstack) do
 | |
|          begin
 | |
|            Message3(scan_e_endif_expected,preprocstring[preprocstack^.typ],preprocstack^.name,tostr(preprocstack^.line_nb));
 | |
|            poppreprocstack;
 | |
|          end;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.poppreprocstack;
 | |
|       var
 | |
|         hp : ppreprocstack;
 | |
|       begin
 | |
|         if assigned(preprocstack) then
 | |
|          begin
 | |
|            Message1(scan_c_endif_found,preprocstack^.name);
 | |
|            hp:=preprocstack^.next;
 | |
|            dispose(preprocstack,done);
 | |
|            preprocstack:=hp;
 | |
|          end
 | |
|         else
 | |
|          Message(scan_e_endif_without_if);
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.addpreprocstack(atyp : preproctyp;a:boolean;const s:string;w:tmsgconst);
 | |
|       begin
 | |
|         preprocstack:=new(ppreprocstack,init(atyp,((preprocstack=nil) or preprocstack^.accept) and a,preprocstack));
 | |
|         preprocstack^.name:=s;
 | |
|         preprocstack^.line_nb:=line_no;
 | |
|         if preprocstack^.accept then
 | |
|          Message2(w,preprocstack^.name,'accepted')
 | |
|         else
 | |
|          Message2(w,preprocstack^.name,'rejected');
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.elsepreprocstack;
 | |
|       begin
 | |
|         if assigned(preprocstack) then
 | |
|          begin
 | |
|            preprocstack^.typ:=pp_else;
 | |
|            preprocstack^.line_nb:=line_no;
 | |
|            if not(assigned(preprocstack^.next)) or (preprocstack^.next^.accept) then
 | |
|             preprocstack^.accept:=not preprocstack^.accept;
 | |
|            if preprocstack^.accept then
 | |
|             Message2(scan_c_else_found,preprocstack^.name,'accepted')
 | |
|            else
 | |
|             Message2(scan_c_else_found,preprocstack^.name,'rejected');
 | |
|          end
 | |
|         else
 | |
|          Message(scan_e_endif_without_if);
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.readchar;
 | |
|       begin
 | |
|         c:=inputpointer^;
 | |
|         if c=#0 then
 | |
|          reload
 | |
|         else
 | |
|          inc(longint(inputpointer));
 | |
|         case c of
 | |
|          #26 : reload;
 | |
|          #10,
 | |
|          #13 : linebreak;
 | |
|         end;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.readstring;
 | |
|       var
 | |
|         i : longint;
 | |
|       begin
 | |
|         i:=0;
 | |
|         repeat
 | |
|           case c of
 | |
|                  '_',
 | |
|             '0'..'9',
 | |
|             'A'..'Z' : begin
 | |
|                          if i<255 then
 | |
|                           begin
 | |
|                             inc(i);
 | |
|                             orgpattern[i]:=c;
 | |
|                             pattern[i]:=c;
 | |
|                           end;
 | |
|                          c:=inputpointer^;
 | |
|                          inc(longint(inputpointer));
 | |
|                        end;
 | |
|             'a'..'z' : begin
 | |
|                          if i<255 then
 | |
|                           begin
 | |
|                             inc(i);
 | |
|                             orgpattern[i]:=c;
 | |
|                             pattern[i]:=chr(ord(c)-32)
 | |
|                           end;
 | |
|                          c:=inputpointer^;
 | |
|                          inc(longint(inputpointer));
 | |
|                        end;
 | |
|               #0 : reload;
 | |
|               #26 : begin
 | |
|                       reload;
 | |
|                       if c=#26 then
 | |
|                         break;
 | |
|                     end;
 | |
|              #13,#10 : begin
 | |
|                          linebreak;
 | |
|                          break;
 | |
|                        end;
 | |
|           else
 | |
|            break;
 | |
|           end;
 | |
|         until false;
 | |
|         {$ifndef TP}
 | |
|           {$ifopt H+}
 | |
|             setlength(orgpattern,i);
 | |
|             setlength(pattern,i);
 | |
|           {$else}
 | |
|             orgpattern[0]:=chr(i);
 | |
|             pattern[0]:=chr(i);
 | |
|           {$endif}
 | |
|         {$else}
 | |
|           orgpattern[0]:=chr(i);
 | |
|           pattern[0]:=chr(i);
 | |
|         {$endif}
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.readnumber;
 | |
|       var
 | |
|         base,
 | |
|         i  : longint;
 | |
|       begin
 | |
|         case c of
 | |
|          '%' : begin
 | |
|                  readchar;
 | |
|                  base:=2;
 | |
|                  pattern[1]:='%';
 | |
|                  i:=1;
 | |
|                end;
 | |
|          '$' : begin
 | |
|                  readchar;
 | |
|                  base:=16;
 | |
|                  pattern[1]:='$';
 | |
|                  i:=1;
 | |
|                end;
 | |
|         else
 | |
|          begin
 | |
|            base:=10;
 | |
|            i:=0;
 | |
|          end;
 | |
|         end;
 | |
|         while ((base>=10) and (c in ['0'..'9'])) or
 | |
|               ((base=16) and (c in ['A'..'F','a'..'f'])) or
 | |
|               ((base=2) and (c in ['0'..'1'])) do
 | |
|          begin
 | |
|            if i<255 then
 | |
|             begin
 | |
|               inc(i);
 | |
|               pattern[i]:=c;
 | |
|             end;
 | |
|         { get next char }
 | |
|            c:=inputpointer^;
 | |
|            if c=#0 then
 | |
|             reload
 | |
|            else
 | |
|             inc(longint(inputpointer));
 | |
|          end;
 | |
|       { was the next char a linebreak ? }
 | |
|         case c of
 | |
|          #26 : reload;
 | |
|          #10,
 | |
|          #13 : linebreak;
 | |
|         end;
 | |
|         {$ifndef TP}
 | |
|           {$ifopt H+}
 | |
|             setlength(pattern,i);
 | |
|           {$else}
 | |
|             pattern[0]:=chr(i);
 | |
|           {$endif}
 | |
|         {$else}
 | |
|           pattern[0]:=chr(i);
 | |
|         {$endif}
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tscannerfile.readid:string;
 | |
|       begin
 | |
|         readstring;
 | |
|         readid:=pattern;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tscannerfile.readval:longint;
 | |
|       var
 | |
|         l : longint;
 | |
|         w : integer;
 | |
|       begin
 | |
|         readnumber;
 | |
|         valint(pattern,l,w);
 | |
|         readval:=l;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tscannerfile.readcomment:string;
 | |
|       var
 | |
|         i : longint;
 | |
|       begin
 | |
|         i:=0;
 | |
|         repeat
 | |
|           case c of
 | |
|            '{' :
 | |
|              if aktcommentstyle=comment_tp then
 | |
|               inc_comment_level;
 | |
|            '}' :
 | |
|              if aktcommentstyle=comment_tp then
 | |
|               begin
 | |
|                 readchar;
 | |
|                 dec_comment_level;
 | |
|                 if comment_level=0 then
 | |
|                  break
 | |
|                 else
 | |
|                  continue;
 | |
|               end;
 | |
|            '*' :
 | |
|              if aktcommentstyle=comment_oldtp then
 | |
|               begin
 | |
|                 readchar;
 | |
|                 if c=')' then
 | |
|                  begin
 | |
|                    readchar;
 | |
|                    dec_comment_level;
 | |
|                    break;
 | |
|                  end;
 | |
|               end;
 | |
|            #26 :
 | |
|               end_of_file;
 | |
|           else
 | |
|             begin
 | |
|               if (i<255) then
 | |
|                begin
 | |
|                  inc(i);
 | |
|                  readcomment[i]:=c;
 | |
|                end;
 | |
|             end;
 | |
|           end;
 | |
|           c:=inputpointer^;
 | |
|           if c=#0 then
 | |
|            reload
 | |
|           else
 | |
|            inc(longint(inputpointer));
 | |
|           if c in [#10,#13] then
 | |
|            linebreak;
 | |
|         until false;
 | |
|         {$ifndef TP}
 | |
|           {$ifopt H+}
 | |
|             setlength(readcomment,i);
 | |
|           {$else}
 | |
|             readcomment[0]:=chr(i);
 | |
|           {$endif}
 | |
|         {$else}
 | |
|           readcomment[0]:=chr(i);
 | |
|         {$endif}
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tscannerfile.readstate:char;
 | |
|       var
 | |
|         state : char;
 | |
|       begin
 | |
|         state:=' ';
 | |
|         if c=' ' then
 | |
|          begin
 | |
|            current_scanner^.skipspace;
 | |
|            current_scanner^.readid;
 | |
|            if pattern='ON' then
 | |
|             state:='+'
 | |
|            else
 | |
|             if pattern='OFF' then
 | |
|              state:='-';
 | |
|          end
 | |
|         else
 | |
|          state:=c;
 | |
|         if not (state in ['+','-']) then
 | |
|          Message(scan_e_wrong_switch_toggle);
 | |
|         readstate:=state;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.skipspace;
 | |
|       begin
 | |
|         while c in [' ',#9..#13] do
 | |
|          begin
 | |
|            c:=inputpointer^;
 | |
|            if c=#0 then
 | |
|             reload
 | |
|            else
 | |
|             inc(longint(inputpointer));
 | |
|            case c of
 | |
|             #26 :
 | |
|               reload;
 | |
|             #10,
 | |
|             #13 :
 | |
|               linebreak;
 | |
|            end;
 | |
|          end;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.skipuntildirective;
 | |
|       var
 | |
|         found : longint;
 | |
|         next_char_loaded : boolean;
 | |
|         oldcommentstyle : tcommentstyle;
 | |
|       begin
 | |
|          found:=0;
 | |
|          next_char_loaded:=false;
 | |
|          oldcommentstyle:=aktcommentstyle;
 | |
|          repeat
 | |
|            case c of
 | |
|              #26 :
 | |
|                end_of_file;
 | |
|              '{' :
 | |
|                begin
 | |
|                  if not(m_nested_comment in aktmodeswitches) or
 | |
|                     (comment_level=0) then
 | |
|                   begin
 | |
|                     found:=1;
 | |
|                     aktcommentstyle:=comment_tp;
 | |
|                   end;
 | |
|                  inc_comment_level;
 | |
|                end;
 | |
|              '}' :
 | |
|                begin
 | |
|                  dec_comment_level;
 | |
|                  found:=0;
 | |
|                end;
 | |
|              '$' :
 | |
|                begin
 | |
|                  if found=1 then
 | |
|                   found:=2;
 | |
|                end;
 | |
|              '''' :
 | |
|                if (m_tp in aktmodeswitches) or
 | |
|                   (m_delphi in aktmodeswitches) then
 | |
|                 begin
 | |
|                   repeat
 | |
|                     readchar;
 | |
|                     case c of
 | |
|                       #26 :
 | |
|                         end_of_file;
 | |
|                       newline :
 | |
|                         break;
 | |
|                       '''' :
 | |
|                         begin
 | |
|                           readchar;
 | |
|                           if c<>'''' then
 | |
|                            break;
 | |
|                         end;
 | |
|                     end;
 | |
|                   until false;
 | |
|                 end;
 | |
|              '(' :
 | |
|                 begin
 | |
|                   readchar;
 | |
|                   if c='*' then
 | |
|                     begin
 | |
|                       readchar;
 | |
|                       if c='$' then
 | |
|                        begin
 | |
|                          found:=2;
 | |
|                          inc_comment_level;
 | |
|                          aktcommentstyle:=comment_oldtp;
 | |
|                        end
 | |
|                       else
 | |
|                        begin
 | |
|                          skipoldtpcomment;
 | |
|                          aktcommentstyle:=oldcommentstyle;
 | |
|                        end;
 | |
|                     end
 | |
|                   else
 | |
|                     next_char_loaded:=true;
 | |
|                 end;
 | |
|              else
 | |
|                 found:=0;
 | |
|            end;
 | |
|            if next_char_loaded then
 | |
|              next_char_loaded:=false
 | |
|            else
 | |
|              begin
 | |
|                 c:=inputpointer^;
 | |
|                 if c=#0 then
 | |
|                   reload
 | |
|                 else
 | |
|                   inc(longint(inputpointer));
 | |
|                 case c of
 | |
|                   #26 : reload;
 | |
|                   #10,
 | |
|                   #13 : linebreak;
 | |
|                 end;
 | |
|              end;
 | |
|          until (found=2);
 | |
|       end;
 | |
| 
 | |
| 
 | |
| {****************************************************************************
 | |
|                       Include directive scanning/parsing
 | |
| ****************************************************************************}
 | |
| 
 | |
| {$i scandir.inc}
 | |
| 
 | |
| 
 | |
| {****************************************************************************
 | |
|                              Comment Handling
 | |
| ****************************************************************************}
 | |
| 
 | |
|     procedure tscannerfile.skipcomment;
 | |
|       begin
 | |
|         aktcommentstyle:=comment_tp;
 | |
|         readchar;
 | |
|         inc_comment_level;
 | |
|       { handle compiler switches }
 | |
|         if (c='$') then
 | |
|          handledirectives;
 | |
|       { handle_switches can dec comment_level,  }
 | |
|         while (comment_level>0) do
 | |
|          begin
 | |
|            case c of
 | |
|             '{' : inc_comment_level;
 | |
|             '}' : dec_comment_level;
 | |
|             #26 : end_of_file;
 | |
|            end;
 | |
|            c:=inputpointer^;
 | |
|            if c=#0 then
 | |
|             reload
 | |
|            else
 | |
|             inc(longint(inputpointer));
 | |
|            case c of
 | |
|             #26 : reload;
 | |
|             #10,
 | |
|             #13 : linebreak;
 | |
|            end;
 | |
|          end;
 | |
|         aktcommentstyle:=comment_none;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.skipdelphicomment;
 | |
|       begin
 | |
|         aktcommentstyle:=comment_delphi;
 | |
|         inc_comment_level;
 | |
|         readchar;
 | |
|       { this is currently not supported }
 | |
|         if c='$' then
 | |
|           Message(scan_e_wrong_styled_switch);
 | |
|       { skip comment }
 | |
|         while c<>newline do
 | |
|          begin
 | |
|            if c=#26 then
 | |
|             end_of_file;
 | |
|            readchar;
 | |
|          end;
 | |
|         dec_comment_level;
 | |
|         aktcommentstyle:=comment_none;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tscannerfile.skipoldtpcomment;
 | |
|       var
 | |
|         found : longint;
 | |
|       begin
 | |
|         aktcommentstyle:=comment_oldtp;
 | |
|         inc_comment_level;
 | |
|         readchar;
 | |
|       { this is currently not supported }
 | |
|         if (c='$') then
 | |
|          handledirectives;
 | |
|       { skip comment }
 | |
|         while (comment_level>0) do
 | |
|          begin
 | |
|            found:=0;
 | |
|            repeat
 | |
|              case c of
 | |
|                #26 :
 | |
|                  end_of_file;
 | |
|                '*' :
 | |
|                  begin
 | |
|                    if found=3 then
 | |
|                     found:=4
 | |
|                    else
 | |
|                     found:=1;
 | |
|                  end;
 | |
|                ')' :
 | |
|                  begin
 | |
|                    if found in [1,4] then
 | |
|                     begin
 | |
|                       dec_comment_level;
 | |
|                       if comment_level=0 then
 | |
|                        found:=2
 | |
|                       else
 | |
|                        found:=0;
 | |
|                     end;
 | |
|                  end;
 | |
|                '(' :
 | |
|                  begin
 | |
|                    if found=4 then
 | |
|                     inc_comment_level;
 | |
|                    found:=3;
 | |
|                  end;
 | |
|                else
 | |
|                  begin
 | |
|                    if found=4 then
 | |
|                     inc_comment_level;
 | |
|                    found:=0;
 | |
|                  end;
 | |
|              end;
 | |
|              c:=inputpointer^;
 | |
|              if c=#0 then
 | |
|               reload
 | |
|              else
 | |
|               inc(longint(inputpointer));
 | |
|              case c of
 | |
|               #26 : reload;
 | |
|               #10,
 | |
|               #13 : linebreak;
 | |
|              end;
 | |
|            until (found=2);
 | |
|          end;
 | |
|         aktcommentstyle:=comment_none;
 | |
|       end;
 | |
| 
 | |
| 
 | |
| 
 | |
| {****************************************************************************
 | |
|                                Token Scanner
 | |
| ****************************************************************************}
 | |
| 
 | |
|     procedure tscannerfile.readtoken;
 | |
|       var
 | |
|         code    : integer;
 | |
|         low,high,mid : longint;
 | |
|         m       : longint;
 | |
|         mac     : pmacrosym;
 | |
|         asciinr : string[6];
 | |
|       label
 | |
|          exit_label;
 | |
|       begin
 | |
|       { was there already a token read, then return that token }
 | |
|         if nexttoken<>NOTOKEN then
 | |
|          begin
 | |
|            token:=nexttoken;
 | |
|            nexttoken:=NOTOKEN;
 | |
|            goto exit_label;
 | |
|          end;
 | |
| 
 | |
|       { Skip all spaces and comments }
 | |
|         repeat
 | |
|           case c of
 | |
|             '{' :
 | |
|               skipcomment;
 | |
|             ' ',#9..#13 :
 | |
|               begin
 | |
|                 if parapreprocess then
 | |
|                  begin
 | |
|                    if c=#10 then
 | |
|                     preprocfile^.eolfound:=true
 | |
|                    else
 | |
|                     preprocfile^.spacefound:=true;
 | |
|                  end;
 | |
|                 skipspace;
 | |
|               end
 | |
|             else
 | |
|               break;
 | |
|           end;
 | |
|         until false;
 | |
| 
 | |
|       { Save current token position, for EOF its already loaded }
 | |
|         if c<>#26 then
 | |
|          gettokenpos;
 | |
| 
 | |
|       { Check first for a identifier/keyword, this is 20+% faster (PFV) }
 | |
|         if c in ['A'..'Z','a'..'z','_'] then
 | |
|          begin
 | |
|            readstring;
 | |
|            token:=_ID;
 | |
|            idtoken:=_ID;
 | |
|          { keyword or any other known token,
 | |
|            pattern is always uppercased }
 | |
|            if (pattern[1]<>'_') and (length(pattern) in [2..tokenidlen]) then
 | |
|             begin
 | |
|               low:=ord(tokenidx^[length(pattern),pattern[1]].first);
 | |
|               high:=ord(tokenidx^[length(pattern),pattern[1]].last);
 | |
|               while low<high do
 | |
|                begin
 | |
|                  mid:=(high+low+1) shr 1;
 | |
|                  if pattern<tokeninfo^[ttoken(mid)].str then
 | |
|                   high:=mid-1
 | |
|                  else
 | |
|                   low:=mid;
 | |
|                end;
 | |
|               if pattern=tokeninfo^[ttoken(high)].str then
 | |
|                begin
 | |
|                  if tokeninfo^[ttoken(high)].keyword in aktmodeswitches then
 | |
|                   if tokeninfo^[ttoken(high)].op=NOTOKEN then
 | |
|                     token:=ttoken(high)
 | |
|                   else
 | |
|                     token:=tokeninfo^[ttoken(high)].op;
 | |
|                  idtoken:=ttoken(high);
 | |
|                end;
 | |
|             end;
 | |
|          { Only process identifiers and not keywords }
 | |
|            if token=_ID then
 | |
|             begin
 | |
|             { this takes some time ... }
 | |
|               if (cs_support_macro in aktmoduleswitches) then
 | |
|                begin
 | |
|                  mac:=pmacrosym(macros^.search(pattern));
 | |
|                  if assigned(mac) and (assigned(mac^.buftext)) then
 | |
|                   begin
 | |
|                     insertmacro(pattern,mac^.buftext,mac^.buflen);
 | |
|                   { handle empty macros }
 | |
|                     if c=#0 then
 | |
|                      begin
 | |
|                        reload;
 | |
|                        case c of
 | |
|                         #26 : reload;
 | |
|                         #10,
 | |
|                         #13 : linebreak;
 | |
|                        end;
 | |
|                      end;
 | |
|                   { play it again ... }
 | |
|                     inc(yylexcount);
 | |
|                     if yylexcount>16 then
 | |
|                      Message(scan_w_macro_deep_ten);
 | |
|                     readtoken;
 | |
|                   { that's all folks }
 | |
|                     dec(yylexcount);
 | |
|                     exit;
 | |
|                   end;
 | |
|                end;
 | |
|             end;
 | |
|          { return token }
 | |
|            goto exit_label;
 | |
|          end
 | |
|         else
 | |
|          begin
 | |
|            idtoken:=_NOID;
 | |
|            case c of
 | |
| 
 | |
|              '$' :
 | |
|                begin
 | |
|                  readnumber;
 | |
|                  token:=_INTCONST;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              '%' :
 | |
|                begin
 | |
|                  readnumber;
 | |
|                  token:=_INTCONST;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              '0'..'9' :
 | |
|                begin
 | |
|                  readnumber;
 | |
|                  if (c in ['.','e','E']) then
 | |
|                   begin
 | |
|                   { first check for a . }
 | |
|                     if c='.' then
 | |
|                      begin
 | |
|                        readchar;
 | |
|                        { is it a .. from a range? }
 | |
|                        case c of
 | |
|                          '.' :
 | |
|                            begin
 | |
|                              readchar;
 | |
|                              token:=_INTCONST;
 | |
|                              nexttoken:=_POINTPOINT;
 | |
|                              goto exit_label;
 | |
|                            end;
 | |
|                          ')' :
 | |
|                            begin
 | |
|                              readchar;
 | |
|                              token:=_INTCONST;
 | |
|                              nexttoken:=_RECKKLAMMER;
 | |
|                              goto exit_label;
 | |
|                            end;
 | |
|                        end;
 | |
|                        { insert the number after the . }
 | |
|                        pattern:=pattern+'.';
 | |
|                        while c in ['0'..'9'] do
 | |
|                         begin
 | |
|                           pattern:=pattern+c;
 | |
|                           readchar;
 | |
|                         end;
 | |
|                       end;
 | |
|                   { E can also follow after a point is scanned }
 | |
|                     if c in ['e','E'] then
 | |
|                      begin
 | |
|                        pattern:=pattern+'E';
 | |
|                        readchar;
 | |
|                        if c in ['-','+'] then
 | |
|                         begin
 | |
|                           pattern:=pattern+c;
 | |
|                           readchar;
 | |
|                         end;
 | |
|                        if not(c in ['0'..'9']) then
 | |
|                         Message(scan_f_illegal_char);
 | |
|                        while c in ['0'..'9'] do
 | |
|                         begin
 | |
|                           pattern:=pattern+c;
 | |
|                           readchar;
 | |
|                         end;
 | |
|                      end;
 | |
|                     token:=_REALNUMBER;
 | |
|                     goto exit_label;
 | |
|                   end;
 | |
|                  token:=_INTCONST;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              ';' :
 | |
|                begin
 | |
|                  readchar;
 | |
|                  token:=_SEMICOLON;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              '[' :
 | |
|                begin
 | |
|                  readchar;
 | |
|                  token:=_LECKKLAMMER;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              ']' :
 | |
|                begin
 | |
|                  readchar;
 | |
|                  token:=_RECKKLAMMER;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              '(' :
 | |
|                begin
 | |
|                  readchar;
 | |
|                  case c of
 | |
|                    '*' :
 | |
|                      begin
 | |
|                        skipoldtpcomment;
 | |
|                        readtoken;
 | |
|                        exit;
 | |
|                      end;
 | |
|                    '.' :
 | |
|                      begin
 | |
|                        readchar;
 | |
|                        token:=_LECKKLAMMER;
 | |
|                        goto exit_label;
 | |
|                      end;
 | |
|                  end;
 | |
|                  token:=_LKLAMMER;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              ')' :
 | |
|                begin
 | |
|                  readchar;
 | |
|                  token:=_RKLAMMER;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              '+' :
 | |
|                begin
 | |
|                  readchar;
 | |
|                  if (c='=') and (cs_support_c_operators in aktmoduleswitches) then
 | |
|                   begin
 | |
|                     readchar;
 | |
|                     token:=_PLUSASN;
 | |
|                     goto exit_label;
 | |
|                   end;
 | |
|                  token:=_PLUS;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              '-' :
 | |
|                begin
 | |
|                  readchar;
 | |
|                  if (c='=') and (cs_support_c_operators in aktmoduleswitches) then
 | |
|                   begin
 | |
|                     readchar;
 | |
|                     token:=_MINUSASN;
 | |
|                     goto exit_label;
 | |
|                   end;
 | |
|                  token:=_MINUS;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              ':' :
 | |
|                begin
 | |
|                  readchar;
 | |
|                  if c='=' then
 | |
|                   begin
 | |
|                     readchar;
 | |
|                     token:=_ASSIGNMENT;
 | |
|                     goto exit_label;
 | |
|                   end;
 | |
|                  token:=_COLON;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              '*' :
 | |
|                begin
 | |
|                  readchar;
 | |
|                  if (c='=') and (cs_support_c_operators in aktmoduleswitches) then
 | |
|                   begin
 | |
|                     readchar;
 | |
|                     token:=_STARASN;
 | |
|                   end
 | |
|                  else
 | |
|                   if c='*' then
 | |
|                    begin
 | |
|                      readchar;
 | |
|                      token:=_STARSTAR;
 | |
|                    end
 | |
|                  else
 | |
|                   token:=_STAR;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              '/' :
 | |
|                begin
 | |
|                  readchar;
 | |
|                  case c of
 | |
|                    '=' :
 | |
|                      begin
 | |
|                        if (cs_support_c_operators in aktmoduleswitches) then
 | |
|                         begin
 | |
|                           readchar;
 | |
|                           token:=_SLASHASN;
 | |
|                           goto exit_label;
 | |
|                         end;
 | |
|                      end;
 | |
|                    '/' :
 | |
|                      begin
 | |
|                        skipdelphicomment;
 | |
|                        readtoken;
 | |
|                        exit;
 | |
|                      end;
 | |
|                  end;
 | |
|                  token:=_SLASH;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              '=' :
 | |
|                begin
 | |
|                  readchar;
 | |
|                  token:=_EQUAL;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              '.' :
 | |
|                begin
 | |
|                  readchar;
 | |
|                  case c of
 | |
|                    '.' :
 | |
|                      begin
 | |
|                        readchar;
 | |
|                        token:=_POINTPOINT;
 | |
|                        goto exit_label;
 | |
|                      end;
 | |
|                    ')' :
 | |
|                      begin
 | |
|                        readchar;
 | |
|                        token:=_RECKKLAMMER;
 | |
|                        goto exit_label;
 | |
|                      end;
 | |
|                  end;
 | |
|                  token:=_POINT;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              '@' :
 | |
|                begin
 | |
|                  readchar;
 | |
|                  if c='@' then
 | |
|                   begin
 | |
|                     readchar;
 | |
|                     token:=_DOUBLEADDR;
 | |
|                   end
 | |
|                  else
 | |
|                   token:=_KLAMMERAFFE;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              ',' :
 | |
|                begin
 | |
|                  readchar;
 | |
|                  token:=_COMMA;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              '''','#','^' :
 | |
|                begin
 | |
|                  if c='^' then
 | |
|                   begin
 | |
|                     readchar;
 | |
|                     c:=upcase(c);
 | |
|                     if (block_type=bt_type) or
 | |
|                        (lasttoken=_ID) or
 | |
|                        (lasttoken=_RKLAMMER) or (lasttoken=_RECKKLAMMER) or (lasttoken=_CARET) then
 | |
|                      begin
 | |
|                        token:=_CARET;
 | |
|                        goto exit_label;
 | |
|                      end
 | |
|                     else
 | |
|                      begin
 | |
|                        if c<#64 then
 | |
|                         pattern:=chr(ord(c)+64)
 | |
|                        else
 | |
|                         pattern:=chr(ord(c)-64);
 | |
|                        readchar;
 | |
|                      end;
 | |
|                   end
 | |
|                  else
 | |
|                   pattern:='';
 | |
|                  repeat
 | |
|                    case c of
 | |
|                      '#' :
 | |
|                        begin
 | |
|                          readchar; { read # }
 | |
|                          if c='$' then
 | |
|                            begin
 | |
|                               readchar; { read leading $ }
 | |
|                               asciinr:='$';
 | |
|                               while (upcase(c) in ['A'..'F','0'..'9']) and (length(asciinr)<6) do
 | |
|                                begin
 | |
|                                  asciinr:=asciinr+c;
 | |
|                                  readchar;
 | |
|                                end;
 | |
|                            end
 | |
|                          else
 | |
|                            begin
 | |
|                               asciinr:='';
 | |
|                               while (c in ['0'..'9']) and (length(asciinr)<6) do
 | |
|                                begin
 | |
|                                  asciinr:=asciinr+c;
 | |
|                                  readchar;
 | |
|                                end;
 | |
|                            end;
 | |
|                          valint(asciinr,m,code);
 | |
|                          if (asciinr='') or (code<>0) or
 | |
|                             (m<0) or (m>255) then
 | |
|                           Message(scan_e_illegal_char_const);
 | |
|                          pattern:=pattern+chr(m);
 | |
|                        end;
 | |
|                      '''' :
 | |
|                        begin
 | |
|                          repeat
 | |
|                            readchar;
 | |
|                            case c of
 | |
|                              #26 :
 | |
|                                end_of_file;
 | |
|                              newline :
 | |
|                                Message(scan_f_string_exceeds_line);
 | |
|                              '''' :
 | |
|                                begin
 | |
|                                  readchar;
 | |
|                                  if c<>'''' then
 | |
|                                   break;
 | |
|                                end;
 | |
|                            end;
 | |
|                            pattern:=pattern+c;
 | |
|                          until false;
 | |
|                        end;
 | |
|                      '^' :
 | |
|                        begin
 | |
|                          readchar;
 | |
|                          if c<#64 then
 | |
|                           c:=chr(ord(c)+64)
 | |
|                          else
 | |
|                           c:=chr(ord(c)-64);
 | |
|                          pattern:=pattern+c;
 | |
|                          readchar;
 | |
|                        end;
 | |
|                      else
 | |
|                       break;
 | |
|                    end;
 | |
|                  until false;
 | |
|                { strings with length 1 become const chars }
 | |
|                  if length(pattern)=1 then
 | |
|                   token:=_CCHAR
 | |
|                  else
 | |
|                   token:=_CSTRING;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              '>' :
 | |
|                begin
 | |
|                  readchar;
 | |
|                  case c of
 | |
|                    '=' :
 | |
|                      begin
 | |
|                        readchar;
 | |
|                        token:=_GTE;
 | |
|                        goto exit_label;
 | |
|                      end;
 | |
|                    '>' :
 | |
|                      begin
 | |
|                        readchar;
 | |
|                        token:=_OP_SHR;
 | |
|                        goto exit_label;
 | |
|                      end;
 | |
|                    '<' :
 | |
|                      begin { >< is for a symetric diff for sets }
 | |
|                        readchar;
 | |
|                        token:=_SYMDIF;
 | |
|                        goto exit_label;
 | |
|                      end;
 | |
|                  end;
 | |
|                  token:=_GT;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              '<' :
 | |
|                begin
 | |
|                  readchar;
 | |
|                  case c of
 | |
|                    '>' :
 | |
|                      begin
 | |
|                        readchar;
 | |
|                        token:=_UNEQUAL;
 | |
|                        goto exit_label;
 | |
|                      end;
 | |
|                    '=' :
 | |
|                      begin
 | |
|                        readchar;
 | |
|                        token:=_LTE;
 | |
|                        goto exit_label;
 | |
|                      end;
 | |
|                    '<' :
 | |
|                      begin
 | |
|                        readchar;
 | |
|                        token:=_OP_SHL;
 | |
|                        goto exit_label;
 | |
|                      end;
 | |
|                  end;
 | |
|                  token:=_LT;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
| 
 | |
|              #26 :
 | |
|                begin
 | |
|                  token:=_EOF;
 | |
|                  checkpreprocstack;
 | |
|                  goto exit_label;
 | |
|                end;
 | |
|              else
 | |
|                begin
 | |
|                  Message(scan_f_illegal_char);
 | |
|                end;
 | |
|            end;
 | |
|         end;
 | |
| exit_label:
 | |
|         lasttoken:=token;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tscannerfile.readpreproc:ttoken;
 | |
|       begin
 | |
|          skipspace;
 | |
|          case c of
 | |
|         'A'..'Z',
 | |
|         'a'..'z',
 | |
|     '_','0'..'9' : begin
 | |
|                      preprocpat:=readid;
 | |
|                      readpreproc:=_ID;
 | |
|                    end;
 | |
|              '(' : begin
 | |
|                      readchar;
 | |
|                      readpreproc:=_LKLAMMER;
 | |
|                    end;
 | |
|              ')' : begin
 | |
|                      readchar;
 | |
|                      readpreproc:=_RKLAMMER;
 | |
|                    end;
 | |
|              '+' : begin
 | |
|                      readchar;
 | |
|                      readpreproc:=_PLUS;
 | |
|                    end;
 | |
|              '-' : begin
 | |
|                      readchar;
 | |
|                      readpreproc:=_MINUS;
 | |
|                    end;
 | |
|              '*' : begin
 | |
|                      readchar;
 | |
|                      readpreproc:=_STAR;
 | |
|                    end;
 | |
|              '/' : begin
 | |
|                      readchar;
 | |
|                      readpreproc:=_SLASH;
 | |
|                    end;
 | |
|              '=' : begin
 | |
|                      readchar;
 | |
|                      readpreproc:=_EQUAL;
 | |
|                    end;
 | |
|              '>' : begin
 | |
|                      readchar;
 | |
|                      if c='=' then
 | |
|                       begin
 | |
|                         readchar;
 | |
|                         readpreproc:=_GTE;
 | |
|                       end
 | |
|                      else
 | |
|                       readpreproc:=_GT;
 | |
|                    end;
 | |
|              '<' : begin
 | |
|                      readchar;
 | |
|                      case c of
 | |
|                       '>' : begin
 | |
|                               readchar;
 | |
|                               readpreproc:=_UNEQUAL;
 | |
|                             end;
 | |
|                       '=' : begin
 | |
|                               readchar;
 | |
|                               readpreproc:=_LTE;
 | |
|                             end;
 | |
|                      else   readpreproc:=_LT;
 | |
|                      end;
 | |
|                    end;
 | |
|              #26 :
 | |
|                end_of_file;
 | |
|          else
 | |
|           begin
 | |
|             readpreproc:=_EOF;
 | |
|             checkpreprocstack;
 | |
|           end;
 | |
|          end;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tscannerfile.asmgetchar : char;
 | |
|       begin
 | |
|          if lastasmgetchar<>#0 then
 | |
|           begin
 | |
|             c:=lastasmgetchar;
 | |
|             lastasmgetchar:=#0;
 | |
|           end
 | |
|          else
 | |
|           readchar;
 | |
|          case c of
 | |
|           '{' : begin
 | |
|                   skipcomment;
 | |
|                   asmgetchar:=c;
 | |
|                   exit;
 | |
|                 end;
 | |
|           '/' : begin
 | |
|                   readchar;
 | |
|                   if c='/' then
 | |
|                    begin
 | |
|                      skipdelphicomment;
 | |
|                      asmgetchar:=c;
 | |
|                    end
 | |
|                   else
 | |
|                    begin
 | |
|                      asmgetchar:='/';
 | |
|                      lastasmgetchar:=c;
 | |
|                    end;
 | |
|                   exit;
 | |
|                 end;
 | |
|           '(' : begin
 | |
|                   readchar;
 | |
|                   if c='*' then
 | |
|                    begin
 | |
|                      skipoldtpcomment;
 | |
|                      asmgetchar:=c;
 | |
|                    end
 | |
|                   else
 | |
|                    begin
 | |
|                      asmgetchar:='(';
 | |
|                      lastasmgetchar:=c;
 | |
|                    end;
 | |
|                   exit;
 | |
|                 end;
 | |
|          else
 | |
|           begin
 | |
|             asmgetchar:=c;
 | |
|           end;
 | |
|          end;
 | |
|       end;
 | |
| 
 | |
| end.
 | |
| {
 | |
|   $Log$
 | |
|   Revision 1.104  2000-01-30 19:28:25  peter
 | |
|     * fixed filepos when eof is read, it'll now stay on the eof position
 | |
| 
 | |
|   Revision 1.103  2000/01/07 01:14:38  peter
 | |
|     * updated copyright to 2000
 | |
| 
 | |
|   Revision 1.102  1999/12/02 17:34:34  peter
 | |
|     * preprocessor support. But it fails on the caret in type blocks
 | |
| 
 | |
|   Revision 1.101  1999/11/15 17:52:59  pierre
 | |
|     + one field added for ttoken record for operator
 | |
|       linking the id to the corresponding operator token that
 | |
|       can now now all be overloaded
 | |
|     * overloaded operators are resetted to nil in InitSymtable
 | |
|       (bug when trying to compile a uint that overloads operators twice)
 | |
| 
 | |
|   Revision 1.100  1999/11/06 14:34:26  peter
 | |
|     * truncated log to 20 revs
 | |
| 
 | |
|   Revision 1.99  1999/11/03 23:44:28  peter
 | |
|     * fixed comment level counting after directive
 | |
| 
 | |
|   Revision 1.98  1999/11/02 15:05:08  peter
 | |
|     * fixed oldtp comment parsing
 | |
| 
 | |
|   Revision 1.97  1999/10/30 12:32:30  peter
 | |
|     * fixed line counter when the first line had #10 only. This was buggy
 | |
|       for both the main file as for include files
 | |
| 
 | |
|   Revision 1.96  1999/09/27 23:40:10  peter
 | |
|     * fixed macro within macro endless-loop
 | |
| 
 | |
|   Revision 1.95  1999/09/03 10:02:48  peter
 | |
|     * $IFNDEF is 7 chars and not 6 chars
 | |
| 
 | |
|   Revision 1.94  1999/09/02 18:47:47  daniel
 | |
|     * Could not compile with TP, some arrays moved to heap
 | |
|     * NOAG386BIN default for TP
 | |
|     * AG386* files were not compatible with TP, fixed.
 | |
| 
 | |
|   Revision 1.93  1999/08/30 10:17:58  peter
 | |
|     * fixed crash in psub
 | |
|     * ansistringcompare fixed
 | |
|     * support for #$0b8
 | |
| 
 | |
|   Revision 1.92  1999/08/06 13:11:44  michael
 | |
|   * Removed C style comments.
 | |
| 
 | |
|   Revision 1.91  1999/08/05 16:53:11  peter
 | |
|     * V_Fatal=1, all other V_ are also increased
 | |
|     * Check for local procedure when assigning procvar
 | |
|     * fixed comment parsing because directives
 | |
|     * oldtp mode directives better supported
 | |
|     * added some messages to errore.msg
 | |
| 
 | |
|   Revision 1.90  1999/08/04 13:03:05  jonas
 | |
|     * all tokens now start with an underscore
 | |
|     * PowerPC compiles!!
 | |
| 
 | |
|   Revision 1.89  1999/07/29 11:43:22  peter
 | |
|     * always output preprocstack when unexpected eof is found
 | |
|     * fixed tp7/delphi skipuntildirective parsing
 | |
| 
 | |
|   Revision 1.88  1999/07/24 11:20:59  peter
 | |
|     * directives are allowed in (* *)
 | |
|     * fixed parsing of (* between conditional code
 | |
| 
 | |
|   Revision 1.87  1999/07/18 10:20:02  florian
 | |
|     * made it compilable with Dlephi 4 again
 | |
|     + fixed problem with large stack allocations on win32
 | |
| 
 | |
|   Revision 1.86  1999/06/02 22:44:19  pierre
 | |
|    * previous wrong log corrected
 | |
| 
 | |
|   Revision 1.85  1999/06/02 22:25:49  pierre
 | |
|   * changed $ifdef FPC @ into $ifndef TP
 | |
| 
 | |
|   Revision 1.84  1999/05/31 23:28:42  pierre
 | |
|    * problem with main file end without newline
 | |
| 
 | |
|   Revision 1.83  1999/05/20 14:57:29  peter
 | |
|     * fixed line counting with macro's
 | |
| 
 | |
|   Revision 1.82  1999/05/04 21:45:04  florian
 | |
|     * changes to compile it with Delphi 4.0
 | |
| 
 | |
|   Revision 1.81  1999/04/07 14:36:44  pierre
 | |
|    + better preproc stack checking and report
 | |
| 
 | |
|   Revision 1.80  1999/04/06 11:20:59  peter
 | |
|     * more hashing for keyword table
 | |
| 
 | |
| }
 | 
