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https://gitlab.com/freepascal.org/fpc/source.git
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1667 lines
51 KiB
ObjectPascal
1667 lines
51 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1993,97 by Florian Klaempfl
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This unit implements the scanner part and handling of the switches
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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{$ifdef tp}
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{$F+,N+,E+,R-}
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{$endif}
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unit scanner;
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interface
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uses
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cobjects,globals,verbose,comphook,files;
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const
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{$ifdef TP}
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maxmacrolen=1024;
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{$else}
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maxmacrolen=16*1024;
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{$endif}
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Newline = #10;
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type
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pmacrobuffer = ^tmacrobuffer;
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tmacrobuffer = array[0..maxmacrolen-1] of char;
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ppreprocstack = ^tpreprocstack;
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tpreprocstack = object
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accept : boolean;
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next : ppreprocstack;
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name : stringid;
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line_nb : longint;
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constructor init(a:boolean;n:ppreprocstack);
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destructor done;
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end;
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pscannerfile = ^tscannerfile;
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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 : ttoken;
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do_special, { 1=point after nr, 2=caret after id }
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comment_level,
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yylexcount : longint;
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lastasmgetchar : char;
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preprocstack : ppreprocstack;
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invalid : boolean; { flag if sourcefiles have been destroyed ! }
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constructor init(const fn:string);
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destructor done;
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{ File buffer things }
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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(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 checkpreprocstack;
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procedure poppreprocstack;
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procedure addpreprocstack(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;
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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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var
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c : char;
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orgpattern,
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pattern : string;
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current_scanner : pscannerfile;
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implementation
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uses
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dos,systems,symtable,switches;
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{*****************************************************************************
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Helper routines
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*****************************************************************************}
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type
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tokenidxrec=record
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first,last : ttoken;
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end;
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var
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tokenidx:array[2..tokenidlen] of tokenidxrec;
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const
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{ use any special name that is an invalid file name to avoid problems }
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macro_special_name = '____Macro____';
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procedure create_tokenidx;
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{ create an index with the first and last token for every possible token
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length, so a search only will be done in that small part }
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var
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t : ttoken;
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begin
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for t:=low(ttoken) to high(ttoken) do
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begin
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if not tokens[t].special then
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begin
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if ord(tokenidx[length(tokens[t].str)].first)=0 then
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tokenidx[length(tokens[t].str)].first:=t;
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tokenidx[length(tokens[t].str)].last:=t;
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end;
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end;
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end;
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function is_keyword(const s:string):boolean;
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var
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low,high,mid : longint;
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begin
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if not (length(s) in [2..tokenidlen]) then
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begin
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is_keyword:=false;
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exit;
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end;
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low:=ord(tokenidx[length(s)].first);
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high:=ord(tokenidx[length(s)].last);
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while low<high do
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begin
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mid:=(high+low+1) shr 1;
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if pattern<tokens[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=tokens[ttoken(high)].str) and
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(tokens[ttoken(high)].keyword in aktmodeswitches);
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end;
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{*****************************************************************************
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TPreProcStack
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*****************************************************************************}
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constructor tpreprocstack.init(a:boolean;n:ppreprocstack);
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begin
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accept:=a;
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next:=n;
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end;
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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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TSCANNERFILE
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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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do_special:=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:=_END;
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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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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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checkpreprocstack;
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{ close file, but only if we are the first compile }
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{ 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
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if not inputfile^.closed then
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closeinputfile;
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end;
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end;
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end;
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function tscannerfile.openinputfile:boolean;
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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;
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inputstart:=inputfile^.bufstart;
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{ line }
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line_no:=0;
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lastlinepos:=0;
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lasttokenpos:=0;
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end;
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procedure tscannerfile.closeinputfile;
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begin
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inputfile^.close;
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{ reset buffer }
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inputbuffer:=nil;
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inputpointer:=nil;
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inputstart:=0;
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{ reset line }
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line_no:=0;
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lastlinepos:=0;
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lasttokenpos:=0;
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end;
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function tscannerfile.tempopeninputfile:boolean;
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begin
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tempopeninputfile:=inputfile^.tempopen;
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{ reload buffer }
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inputbuffer:=inputfile^.buf;
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inputpointer:=inputfile^.buf;
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inputstart:=inputfile^.bufstart;
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end;
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procedure tscannerfile.tempcloseinputfile;
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begin
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inputfile^.setpos(inputstart+(inputpointer-inputbuffer));
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inputfile^.tempclose;
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{ reset buffer }
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inputbuffer:=nil;
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inputpointer:=nil;
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inputstart:=0;
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end;
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procedure tscannerfile.saveinputfile;
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begin
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inputfile^.saveinputpointer:=inputpointer;
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inputfile^.savelastlinepos:=lastlinepos;
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inputfile^.saveline_no:=line_no;
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end;
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procedure tscannerfile.restoreinputfile;
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begin
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inputpointer:=inputfile^.saveinputpointer;
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lastlinepos:=inputfile^.savelastlinepos;
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line_no:=inputfile^.saveline_no;
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end;
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procedure tscannerfile.nextfile;
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var
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to_dispose : pinputfile;
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begin
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if assigned(inputfile^.next) then
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begin
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if inputfile^.is_macro then
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to_dispose:=inputfile
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else
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to_dispose:=nil;
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inputfile:=inputfile^.next;
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if assigned(to_dispose) then
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dispose(to_dispose,done);
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restoreinputfile;
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end;
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end;
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procedure tscannerfile.addfile(hp:pinputfile);
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begin
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saveinputfile;
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{ add to list }
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hp^.next:=inputfile;
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inputfile:=hp;
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{ load new inputfile }
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restoreinputfile;
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end;
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procedure tscannerfile.reload;
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begin
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with inputfile^ do
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begin
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repeat
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{ still more to read?, then change the #0 to a space so its seen
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as a seperator }
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if (bufsize>0) and (inputpointer-inputbuffer<bufsize) then
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begin
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c:=' ';
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inc(longint(inputpointer));
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exit;
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end;
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{ can we read more from this file ? }
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if not endoffile then
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begin
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readbuf;
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inputpointer:=buf;
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inputbuffer:=buf;
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inputstart:=bufstart;
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{ first line? }
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if line_no=0 then
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begin
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line_no:=1;
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if cs_asm_source in aktglobalswitches then
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inputfile^.setline(line_no,bufstart);
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end;
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end
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else
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begin
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{ load eof position in tokenpos/aktfilepos }
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gettokenpos;
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{ close file }
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closeinputfile;
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{ no next module, than EOF }
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if not assigned(inputfile^.next) then
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begin
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c:=#26;
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exit;
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end;
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{ load next file and reopen it }
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nextfile;
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tempopeninputfile;
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{ status }
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Message1(scan_t_back_in,inputfile^.name^);
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end;
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{ load next char }
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c:=inputpointer^;
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inc(longint(inputpointer));
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until c<>#0; { if also end, then reload again }
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end;
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end;
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procedure tscannerfile.insertmacro(p:pchar;len:longint);
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var
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hp : pinputfile;
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begin
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{ save old postion }
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dec(longint(inputpointer));
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tempcloseinputfile;
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{ create macro 'file' }
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{ use special name to dispose after !! }
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hp:=new(pinputfile,init(macro_special_name));
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addfile(hp);
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with inputfile^ do
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begin
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setmacro(p,len);
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{ local buffer }
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inputbuffer:=buf;
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inputpointer:=buf;
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inputstart:=bufstart;
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end;
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{ reset line }
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line_no:=0;
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lastlinepos:=0;
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lasttokenpos:=0;
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{ load new c }
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c:=inputpointer^;
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inc(longint(inputpointer));
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end;
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procedure tscannerfile.gettokenpos;
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{ load the values of tokenpos and lasttokenpos }
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begin
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lasttokenpos:=inputstart+(inputpointer-inputbuffer);
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tokenpos.line:=line_no;
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tokenpos.column:=lasttokenpos-lastlinepos;
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tokenpos.fileindex:=inputfile^.ref_index;
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aktfilepos:=tokenpos;
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end;
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procedure tscannerfile.inc_comment_level;
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var
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oldaktfilepos : tfileposinfo;
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begin
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inc(comment_level);
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if (comment_level>1) then
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begin
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oldaktfilepos:=aktfilepos;
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gettokenpos; { update for warning }
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Message1(scan_w_comment_level,tostr(comment_level));
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aktfilepos:=oldaktfilepos;
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end;
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end;
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procedure tscannerfile.dec_comment_level;
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begin
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if (m_nested_comment in aktmodeswitches) then
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dec(comment_level)
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else
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comment_level:=0;
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end;
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procedure tscannerfile.linebreak;
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var
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cur : char;
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oldtokenpos,
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oldaktfilepos : tfileposinfo;
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begin
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with inputfile^ do
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begin
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if (byte(inputpointer^)=0) and not(endoffile) then
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begin
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cur:=c;
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reload;
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if byte(cur)+byte(c)<>23 then
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dec(longint(inputpointer));
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end
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else
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begin
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{ Fix linebreak to be only newline (=#10) for all types of linebreaks }
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if (byte(inputpointer^)+byte(c)=23) then
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inc(longint(inputpointer));
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end;
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c:=newline;
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{ increase line counters }
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lastlinepos:=bufstart+(inputpointer-inputbuffer);
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inc(line_no);
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{ update linebuffer }
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if cs_asm_source in aktglobalswitches then
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inputfile^.setline(line_no,lastlinepos);
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{ update for status and call the show status routine,
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but don't touch aktfilepos ! }
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oldaktfilepos:=aktfilepos;
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oldtokenpos:=tokenpos;
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gettokenpos; { update for v_status }
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inc(status.compiledlines);
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ShowStatus;
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aktfilepos:=oldaktfilepos;
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tokenpos:=oldtokenpos;
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end;
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end;
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procedure tscannerfile.checkpreprocstack;
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begin
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{ check for missing ifdefs }
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while assigned(preprocstack) do
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begin
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Message3(scan_e_endif_expected,'$IF(N)(DEF)',preprocstack^.name,tostr(preprocstack^.line_nb));
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poppreprocstack;
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end;
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end;
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procedure tscannerfile.poppreprocstack;
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var
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hp : ppreprocstack;
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begin
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if assigned(preprocstack) then
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begin
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hp:=preprocstack^.next;
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dispose(preprocstack,done);
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preprocstack:=hp;
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end
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else
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Message(scan_e_endif_without_if);
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end;
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procedure tscannerfile.addpreprocstack(a:boolean;const s:string;w:tmsgconst);
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begin
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preprocstack:=new(ppreprocstack,init(((preprocstack=nil) or preprocstack^.accept) and a,preprocstack));
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preprocstack^.name:=s;
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preprocstack^.line_nb:=line_no;
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if preprocstack^.accept then
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Message2(w,preprocstack^.name,'accepted')
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else
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Message2(w,preprocstack^.name,'rejected');
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end;
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procedure tscannerfile.elsepreprocstack;
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begin
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if assigned(preprocstack) then
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begin
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if not(assigned(preprocstack^.next)) or (preprocstack^.next^.accept) then
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preprocstack^.accept:=not preprocstack^.accept;
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if preprocstack^.accept then
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Message2(scan_c_else_found,preprocstack^.name,'accepted')
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else
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Message2(scan_c_else_found,preprocstack^.name,'rejected');
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end
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else
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Message(scan_e_endif_without_if);
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end;
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|
|
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procedure tscannerfile.readchar;
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begin
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c:=inputpointer^;
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if c=#0 then
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reload
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else
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inc(longint(inputpointer));
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if c in [#10,#13] then
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linebreak;
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end;
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|
|
|
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procedure tscannerfile.readstring;
|
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var
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i : longint;
|
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begin
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i:=0;
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repeat
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case c of
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'_',
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'0'..'9',
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'A'..'Z' : begin
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if i<255 then
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begin
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inc(i);
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orgpattern[i]:=c;
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pattern[i]:=c;
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end;
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c:=inputpointer^;
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inc(longint(inputpointer));
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end;
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'a'..'z' : begin
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if i<255 then
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begin
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inc(i);
|
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orgpattern[i]:=c;
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pattern[i]:=chr(ord(c)-32)
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end;
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c:=inputpointer^;
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inc(longint(inputpointer));
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end;
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#0 : reload;
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#13,#10 : begin
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linebreak;
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break;
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end;
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else
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break;
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end;
|
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until false;
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orgpattern[0]:=chr(i);
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pattern[0]:=chr(i);
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end;
|
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|
|
|
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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 ? }
|
|
if c in [#10,#13] then
|
|
linebreak;
|
|
pattern[0]:=chr(i);
|
|
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
|
|
'}' : begin
|
|
readchar;
|
|
dec_comment_level;
|
|
break;
|
|
end;
|
|
#26 : Message(scan_f_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;
|
|
readcomment[0]:=chr(i);
|
|
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));
|
|
if c in [#10,#13] then
|
|
linebreak;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.skipuntildirective;
|
|
var
|
|
found : longint;
|
|
begin
|
|
found:=0;
|
|
repeat
|
|
case c of
|
|
#26 : Message(scan_f_end_of_file);
|
|
'{' : begin
|
|
if comment_level=0 then
|
|
found:=1;
|
|
inc_comment_level;
|
|
end;
|
|
'}' : begin
|
|
dec_comment_level;
|
|
found:=0;
|
|
end;
|
|
'$' : begin
|
|
if found=1 then
|
|
found:=2;
|
|
end;
|
|
else
|
|
found:=0;
|
|
end;
|
|
c:=inputpointer^;
|
|
if c=#0 then
|
|
reload
|
|
else
|
|
inc(longint(inputpointer));
|
|
if c in [#10,#13] then
|
|
linebreak;
|
|
until (found=2);
|
|
end;
|
|
|
|
{$i scandir.inc}
|
|
|
|
procedure tscannerfile.skipcomment;
|
|
begin
|
|
readchar;
|
|
inc_comment_level;
|
|
{ handle compiler switches }
|
|
if (c='$') then
|
|
handledirectives;
|
|
{ handle_switches can dec comment_level, }
|
|
while (comment_level>0) do
|
|
begin
|
|
case c of
|
|
'{' : inc_comment_level;
|
|
'}' : dec_comment_level;
|
|
#26 : Message(scan_f_end_of_file);
|
|
end;
|
|
c:=inputpointer^;
|
|
if c=#0 then
|
|
reload
|
|
else
|
|
inc(longint(inputpointer));
|
|
if c in [#10,#13] then
|
|
linebreak;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.skipdelphicomment;
|
|
begin
|
|
inc_comment_level;
|
|
readchar;
|
|
{ this is currently not supported }
|
|
if c='$' then
|
|
Message(scan_e_wrong_styled_switch);
|
|
{ skip comment }
|
|
while c<>newline do
|
|
begin
|
|
if c=#26 then
|
|
Message(scan_f_end_of_file);
|
|
readchar;
|
|
end;
|
|
dec_comment_level;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.skipoldtpcomment;
|
|
var
|
|
found : longint;
|
|
begin
|
|
inc_comment_level;
|
|
readchar;
|
|
{ this is currently not supported }
|
|
if c='$' then
|
|
Message(scan_e_wrong_styled_switch);
|
|
{ skip comment }
|
|
while (comment_level>0) do
|
|
begin
|
|
found:=0;
|
|
repeat
|
|
case c of
|
|
#26 : Message(scan_f_end_of_file);
|
|
'*' : begin
|
|
if found=3 then
|
|
inc_comment_level
|
|
else
|
|
found:=1;
|
|
end;
|
|
')' : begin
|
|
if found=1 then
|
|
begin
|
|
dec_comment_level;
|
|
if comment_level=0 then
|
|
found:=2;
|
|
end;
|
|
end;
|
|
'(' : found:=3;
|
|
else
|
|
found:=0;
|
|
end;
|
|
c:=inputpointer^;
|
|
if c=#0 then
|
|
reload
|
|
else
|
|
inc(longint(inputpointer));
|
|
if c in [#10,#13] then
|
|
linebreak;
|
|
until (found=2);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.readtoken;
|
|
var
|
|
code : integer;
|
|
low,high,mid,
|
|
l : longint;
|
|
mac : pmacrosym;
|
|
asciinr : string[3];
|
|
label
|
|
exit_label;
|
|
begin
|
|
{ was the last character a point ? }
|
|
{ this code is needed because the scanner if there is a 1. found if }
|
|
{ this is a floating point number or range like 1..3 }
|
|
if do_special>0 then
|
|
begin
|
|
gettokenpos;
|
|
l:=do_special;
|
|
do_special:=0;
|
|
case l of
|
|
1 : begin { first char was a point }
|
|
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;
|
|
2 : begin { first char was a Caret }
|
|
token:=CARET;
|
|
readchar;
|
|
goto exit_label;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
{ Skip all spaces and comments }
|
|
repeat
|
|
case c of
|
|
'{' : skipcomment;
|
|
' ',#9..#13 : skipspace;
|
|
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 ? }
|
|
if (length(pattern) in [2..tokenidlen]) then
|
|
begin
|
|
low:=ord(tokenidx[length(pattern)].first);
|
|
high:=ord(tokenidx[length(pattern)].last);
|
|
while low<high do
|
|
begin
|
|
mid:=(high+low+1) shr 1;
|
|
if pattern<tokens[ttoken(mid)].str then
|
|
high:=mid-1
|
|
else
|
|
low:=mid;
|
|
end;
|
|
if pattern=tokens[ttoken(high)].str then
|
|
begin
|
|
if tokens[ttoken(high)].keyword in aktmodeswitches then
|
|
token:=ttoken(high);
|
|
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(mac^.buftext,mac^.buflen);
|
|
{ handle empty macros }
|
|
if c=#0 then
|
|
reload;
|
|
{ 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;
|
|
{ a following caret, then set special handling }
|
|
if (c='^') then
|
|
do_special:=2;
|
|
{ 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;
|
|
if not(c in ['0'..'9']) then
|
|
begin
|
|
do_special:=1;
|
|
token:=INTCONST;
|
|
goto exit_label;
|
|
end;
|
|
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 not(block_type=bt_type) and (c in ['A'..'Z']) then
|
|
begin
|
|
pattern:=chr(ord(c)-64);
|
|
readchar;
|
|
end
|
|
else
|
|
begin
|
|
token:=CARET;
|
|
goto exit_label;
|
|
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)<3) do
|
|
begin
|
|
asciinr:=asciinr+c;
|
|
readchar;
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
asciinr:='';
|
|
while (c in ['0'..'9']) and (length(asciinr)<3) do
|
|
begin
|
|
asciinr:=asciinr+c;
|
|
readchar;
|
|
end;
|
|
end;
|
|
valint(asciinr,l,code);
|
|
if (asciinr='') or (code<>0) or
|
|
(l<0) or (l>255) then
|
|
Message(scan_e_illegal_char_const);
|
|
pattern:=pattern+chr(l);
|
|
end;
|
|
'''' : begin
|
|
repeat
|
|
readchar;
|
|
case c of
|
|
#26 : Message(scan_f_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:=_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:=_SHL;
|
|
goto exit_label;
|
|
end;
|
|
end;
|
|
token:=LT;
|
|
goto exit_label;
|
|
end;
|
|
#26 : begin
|
|
token:=_EOF;
|
|
goto exit_label;
|
|
end;
|
|
else
|
|
begin
|
|
Message(scan_f_illegal_char);
|
|
end;
|
|
end;
|
|
end;
|
|
exit_label:
|
|
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 : Message(scan_f_end_of_file);
|
|
else
|
|
begin
|
|
readpreproc:=_EOF;
|
|
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;
|
|
lastasmgetchar:=c;
|
|
asmgetchar:=';';
|
|
exit;
|
|
end;
|
|
'/' : begin
|
|
readchar;
|
|
if c='/' then
|
|
begin
|
|
skipdelphicomment;
|
|
asmgetchar:=';';
|
|
end
|
|
else
|
|
asmgetchar:='/';
|
|
lastasmgetchar:=c;
|
|
exit;
|
|
end;
|
|
'(' : begin
|
|
readchar;
|
|
if c='*' then
|
|
begin
|
|
skipoldtpcomment;
|
|
asmgetchar:=';';
|
|
end
|
|
else
|
|
asmgetchar:='(';
|
|
lastasmgetchar:=c;
|
|
exit;
|
|
end;
|
|
else
|
|
begin
|
|
asmgetchar:=c;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
begin
|
|
create_tokenidx;
|
|
end.
|
|
{
|
|
$Log$
|
|
Revision 1.61 1998-10-09 11:08:15 peter
|
|
* fixed inputfile^.name^ bug
|
|
|
|
Revision 1.60 1998/10/09 08:56:31 pierre
|
|
* several memory leaks fixed
|
|
|
|
Revision 1.59 1998/10/08 23:29:05 peter
|
|
* -vu shows unit info, -vt shows tried/used files
|
|
|
|
Revision 1.58 1998/10/08 17:17:30 pierre
|
|
* current_module old scanner tagged as invalid if unit is recompiled
|
|
+ added ppheap for better info on tracegetmem of heaptrc
|
|
(adds line column and file index)
|
|
* several memory leaks removed ith help of heaptrc !!
|
|
|
|
Revision 1.57 1998/10/08 13:45:25 peter
|
|
* EOF position is now correctly saved in aktfilepos
|
|
|
|
Revision 1.56 1998/09/30 16:43:38 peter
|
|
* fixed unit interdependency with circular uses
|
|
|
|
Revision 1.55 1998/09/28 16:57:26 pierre
|
|
* changed all length(p^.value_str^) into str_length(p)
|
|
to get it work with and without ansistrings
|
|
* changed sourcefiles field of tmodule to a pointer
|
|
|
|
Revision 1.54 1998/09/26 17:45:41 peter
|
|
+ idtoken and only one token table
|
|
|
|
Revision 1.53 1998/09/24 23:49:20 peter
|
|
+ aktmodeswitches
|
|
|
|
Revision 1.52 1998/09/18 16:03:45 florian
|
|
* some changes to compile with Delphi
|
|
|
|
Revision 1.51 1998/09/16 16:41:49 peter
|
|
* merged fixes
|
|
|
|
Revision 1.50.2.1 1998/09/16 16:09:49 peter
|
|
* on/off support also for the local/module switches
|
|
|
|
Revision 1.50 1998/09/04 08:36:06 peter
|
|
+ (. and .) which are equal to [ and ]
|
|
|
|
Revision 1.49 1998/09/03 11:24:03 peter
|
|
* moved more inputfile things from tscannerfile to tinputfile
|
|
* changed ifdef Sourceline to cs_asm_source
|
|
|
|
Revision 1.48 1998/09/01 12:51:02 peter
|
|
* close also resets lastlinepos
|
|
|
|
Revision 1.47 1998/09/01 09:01:52 peter
|
|
* initialize all object variables in .init
|
|
|
|
Revision 1.46 1998/08/29 13:49:00 peter
|
|
* fixed freemem calls which had the wrong size sometimes
|
|
|
|
Revision 1.45 1998/08/26 15:35:35 peter
|
|
* fixed scannerfiles for macros
|
|
+ $I %<environment>%
|
|
|
|
Revision 1.44 1998/08/20 16:09:55 pierre
|
|
* tokenpos has to be restored also after
|
|
printstatus
|
|
|
|
Revision 1.43 1998/08/20 09:26:45 pierre
|
|
+ funcret setting in underproc testing
|
|
compile with _dTEST_FUNCRET
|
|
|
|
Revision 1.42 1998/08/19 14:57:51 peter
|
|
* small fix for aktfilepos
|
|
|
|
Revision 1.41 1998/08/18 14:17:10 pierre
|
|
* bug about assigning the return value of a function to
|
|
a procvar fixed : warning
|
|
assigning a proc to a procvar need @ in FPC mode !!
|
|
* missing file/line info restored
|
|
|
|
Revision 1.40 1998/08/11 14:04:33 peter
|
|
* auto close an open file and better error msg
|
|
|
|
Revision 1.39 1998/08/10 14:50:26 peter
|
|
+ localswitches, moduleswitches, globalswitches splitting
|
|
|
|
Revision 1.38 1998/08/10 10:18:34 peter
|
|
+ Compiler,Comphook unit which are the new interface units to the
|
|
compiler
|
|
|
|
Revision 1.37 1998/07/23 12:40:41 michael
|
|
No nested comments in Delphi mode.
|
|
|
|
Revision 1.36 1998/07/20 22:17:17 florian
|
|
* hex constants in numeric char (#$54#$43 ...) are now allowed
|
|
* there was a bug in record_var_dec which prevents the used
|
|
of nested variant records (for example drivers.tevent of tv)
|
|
|
|
Revision 1.35 1998/07/14 21:38:13 peter
|
|
+ support for with p^do constructs
|
|
|
|
Revision 1.34 1998/07/14 14:47:04 peter
|
|
* released NEWINPUT
|
|
|
|
Revision 1.33 1998/07/10 10:48:40 peter
|
|
* fixed realnumber scanning
|
|
* [] after asmblock was not uppercased anymore
|
|
|
|
Revision 1.31 1998/07/07 17:39:38 peter
|
|
* fixed $I with following eof
|
|
|
|
Revision 1.30 1998/07/07 12:32:55 peter
|
|
* status.currentsource is now calculated in verbose (more accurated)
|
|
|
|
Revision 1.29 1998/07/07 11:20:11 peter
|
|
+ NEWINPUT for a better inputfile and scanner object
|
|
|
|
Revision 1.28 1998/07/01 15:26:57 peter
|
|
* better bufferfile.reset error handling
|
|
|
|
Revision 1.27 1998/06/25 08:48:19 florian
|
|
* first version of rtti support
|
|
|
|
Revision 1.26 1998/06/16 08:56:30 peter
|
|
+ targetcpu
|
|
* cleaner pmodules for newppu
|
|
|
|
Revision 1.25 1998/06/13 00:10:15 peter
|
|
* working browser and newppu
|
|
* some small fixes against crashes which occured in bp7 (but not in
|
|
fpc?!)
|
|
|
|
Revision 1.24 1998/06/12 10:32:36 pierre
|
|
* column problem hopefully solved
|
|
+ C vars declaration changed
|
|
|
|
Revision 1.23 1998/06/03 22:49:02 peter
|
|
+ wordbool,longbool
|
|
* rename bis,von -> high,low
|
|
* moved some systemunit loading/creating to psystem.pas
|
|
|
|
Revision 1.21 1998/05/27 00:20:32 peter
|
|
* some scanner optimizes
|
|
* automaticly aout2exe for go32v1
|
|
* fixed dynamiclinker option which was added at the wrong place
|
|
|
|
Revision 1.20 1998/05/23 01:21:30 peter
|
|
+ aktasmmode, aktoptprocessor, aktoutputformat
|
|
+ smartlink per module $SMARTLINK-/+ (like MMX) and moved to aktswitches
|
|
+ $LIBNAME to set the library name where the unit will be put in
|
|
* splitted cgi386 a bit (codeseg to large for bp7)
|
|
* nasm, tasm works again. nasm moved to ag386nsm.pas
|
|
|
|
Revision 1.19 1998/05/20 09:42:37 pierre
|
|
+ UseTokenInfo now default
|
|
* unit in interface uses and implementation uses gives error now
|
|
* only one error for unknown symbol (uses lastsymknown boolean)
|
|
the problem came from the label code !
|
|
+ first inlined procedures and function work
|
|
(warning there might be allowed cases were the result is still wrong !!)
|
|
* UseBrower updated gives a global list of all position of all used symbols
|
|
with switch -gb
|
|
|
|
Revision 1.18 1998/05/12 10:47:00 peter
|
|
* moved printstatus to verb_def
|
|
+ V_Normal which is between V_Error and V_Warning and doesn't have a
|
|
prefix like error: warning: and is included in V_Default
|
|
* fixed some messages
|
|
* first time parameter scan is only for -v and -T
|
|
- removed old style messages
|
|
|
|
Revision 1.17 1998/05/06 08:38:47 pierre
|
|
* better position info with UseTokenInfo
|
|
UseTokenInfo greatly simplified
|
|
+ added check for changed tree after first time firstpass
|
|
(if we could remove all the cases were it happen
|
|
we could skip all firstpass if firstpasscount > 1)
|
|
Only with ExtDebug
|
|
|
|
Revision 1.16 1998/05/04 17:54:28 peter
|
|
+ smartlinking works (only case jumptable left todo)
|
|
* redesign of systems.pas to support assemblers and linkers
|
|
+ Unitname is now also in the PPU-file, increased version to 14
|
|
|
|
Revision 1.15 1998/05/01 16:38:46 florian
|
|
* handling of private and protected fixed
|
|
+ change_keywords_to_tp implemented to remove
|
|
keywords which aren't supported by tp
|
|
* break and continue are now symbols of the system unit
|
|
+ widestring, longstring and ansistring type released
|
|
|
|
Revision 1.14 1998/04/30 15:59:42 pierre
|
|
* GDB works again better :
|
|
correct type info in one pass
|
|
+ UseTokenInfo for better source position
|
|
* fixed one remaining bug in scanner for line counts
|
|
* several little fixes
|
|
|
|
Revision 1.13 1998/04/29 13:42:27 peter
|
|
+ $IOCHECKS and $ALIGN to test already, other will follow soon
|
|
* fixed the wrong linecounting with comments
|
|
|
|
Revision 1.12 1998/04/29 10:34:04 pierre
|
|
+ added some code for ansistring (not complete nor working yet)
|
|
* corrected operator overloading
|
|
* corrected nasm output
|
|
+ started inline procedures
|
|
+ added starstarn : use ** for exponentiation (^ gave problems)
|
|
+ started UseTokenInfo cond to get accurate positions
|
|
|
|
Revision 1.11 1998/04/27 23:10:29 peter
|
|
+ new scanner
|
|
* $makelib -> if smartlink
|
|
* small filename fixes pmodule.setfilename
|
|
* moved import from files.pas -> import.pas
|
|
|
|
}
|