mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-11-04 11:24:16 +01:00
6a802e85d7
+ deffile is now removed when compiling is finished * ^( compiles now correct + static directive * shrd fixed
779 lines
24 KiB
ObjectPascal
779 lines
24 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1993-98 by Florian Klaempfl
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This unit does the parsing process
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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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{$ifdef tp}
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{$E+,N+,D+,F+}
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{$endif}
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unit parser;
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{ Use exception catching so the compiler goes futher after a Stop }
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{$ifdef i386}
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{$define USEEXCEPT}
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{$endif}
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{$ifdef TP}
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{$ifdef DPMI}
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{$undef USEEXCEPT}
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{$endif}
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{$endif}
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interface
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procedure compile(const filename:string;compile_system:boolean);
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procedure initparser;
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procedure doneparser;
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implementation
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uses
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globtype,version,tokens,systems,
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cobjects,globals,verbose,
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symtable,files,aasm,hcodegen,
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assemble,link,script,gendef,
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{$ifdef BrowserLog}
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browlog,
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{$endif BrowserLog}
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{$ifdef BrowserCol}
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browcol,
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{$endif BrowserCol}
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{$ifdef UseExcept}
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tpexcept,compiler,
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{$endif UseExcept}
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{$ifdef newcg}
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cgobj,
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{$ifdef i386}
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cg386,
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{$endif i386}
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{$endif newcg}
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tree,scanner,pbase,pdecl,psystem,pmodules;
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procedure initparser;
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begin
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forwardsallowed:=false;
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{ ^M means a string or a char, because we don't parse a }
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{ type declaration }
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ignore_equal:=false;
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{ we didn't parse a object or class declaration }
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{ and no function header }
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testcurobject:=0;
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{ a long time, this was forgotten }
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aktprocsym:=nil;
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current_module:=nil;
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loaded_units.init;
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usedunits.init;
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{ global switches }
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aktglobalswitches:=initglobalswitches;
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{ scanner }
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c:=#0;
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pattern:='';
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orgpattern:='';
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current_scanner:=nil;
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{ memory sizes }
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if heapsize=0 then
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heapsize:=target_info.heapsize;
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if maxheapsize=0 then
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maxheapsize:=target_info.maxheapsize;
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if stacksize=0 then
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stacksize:=target_info.stacksize;
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{ open assembler response }
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AsmRes.Init(outputexedir+'ppas');
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{ open deffile }
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DefFile.Init(outputexedir+inputfile+target_os.defext);
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end;
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procedure doneparser;
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begin
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{ unload units }
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loaded_units.done;
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usedunits.done;
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{ close ppas and deffile }
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asmres.done;
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deffile.done;
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end;
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procedure default_macros;
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var
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hp : pstring_item;
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begin
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{ commandline }
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hp:=pstring_item(initdefines.first);
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while assigned(hp) do
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begin
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def_macro(hp^.str^);
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hp:=pstring_item(hp^.next);
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end;
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{ set macros for version checking }
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set_macro('FPC_VERSION',version_nr);
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set_macro('FPC_RELEASE',release_nr);
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set_macro('FPC_PATCH',patch_nr);
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end;
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procedure compile(const filename:string;compile_system:boolean);
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var
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{ scanner }
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oldidtoken,
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oldtoken : ttoken;
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oldtokenpos : tfileposinfo;
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oldc : char;
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oldpattern,
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oldorgpattern : string;
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old_block_type : tblock_type;
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oldcurrent_scanner,prev_scanner,
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scanner : pscannerfile;
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{ symtable }
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oldmacros,
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oldrefsymtable,
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oldsymtablestack : psymtable;
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oldprocprefix : string;
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oldaktprocsym : pprocsym;
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{ cg }
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oldnextlabelnr : longint;
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oldparse_only : boolean;
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{ asmlists }
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oldimports,
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oldexports,
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oldresource,
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oldrttilist,
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oldbsssegment,
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olddatasegment,
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oldcodesegment,
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oldexprasmlist,
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olddebuglist,
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oldinternals,
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oldexternals,
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oldconsts : paasmoutput;
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oldasmsymbollist : pasmsymbollist;
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{ akt.. things }
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oldaktlocalswitches : tlocalswitches;
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oldaktmoduleswitches : tmoduleswitches;
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oldaktfilepos : tfileposinfo;
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oldaktpackrecords : word;
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oldaktoutputformat : tasm;
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oldaktoptprocessor : tprocessors;
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oldaktasmmode : tasmmode;
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oldaktmodeswitches : tmodeswitches;
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prev_name : pstring;
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{$ifdef USEEXCEPT}
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recoverpos : jmp_buf;
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oldrecoverpos : pjmp_buf;
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{$endif useexcept}
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{$ifdef newcg}
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oldcg : pcg;
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{$endif newcg}
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begin
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inc(compile_level);
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prev_name:=stringdup(parser_current_file);
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parser_current_file:=filename;
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{ save symtable state }
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oldsymtablestack:=symtablestack;
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oldrefsymtable:=refsymtable;
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oldmacros:=macros;
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oldprocprefix:=procprefix;
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oldaktprocsym:=aktprocsym;
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{ save scanner state }
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oldc:=c;
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oldpattern:=pattern;
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oldorgpattern:=orgpattern;
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oldtoken:=token;
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oldidtoken:=idtoken;
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old_block_type:=block_type;
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oldtokenpos:=tokenpos;
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oldcurrent_scanner:=current_scanner;
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{ save cg }
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oldnextlabelnr:=nextlabelnr;
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oldparse_only:=parse_only;
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{ save assembler lists }
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olddatasegment:=datasegment;
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oldbsssegment:=bsssegment;
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oldcodesegment:=codesegment;
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olddebuglist:=debuglist;
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oldexternals:=externals;
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oldinternals:=internals;
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oldconsts:=consts;
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oldrttilist:=rttilist;
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oldexprasmlist:=exprasmlist;
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oldimports:=importssection;
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oldexports:=exportssection;
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oldresource:=resourcesection;
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oldasmsymbollist:=asmsymbollist;
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{ save akt... state }
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oldaktlocalswitches:=aktlocalswitches;
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oldaktmoduleswitches:=aktmoduleswitches;
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oldaktpackrecords:=aktpackrecords;
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oldaktoutputformat:=aktoutputformat;
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oldaktoptprocessor:=aktoptprocessor;
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oldaktasmmode:=aktasmmode;
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oldaktfilepos:=aktfilepos;
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oldaktmodeswitches:=aktmodeswitches;
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{$ifdef newcg}
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oldcg:=cg;
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{$endif newcg}
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{ show info }
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Message1(parser_i_compiling,filename);
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{ reset symtable }
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symtablestack:=nil;
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defaultsymtablestack:=nil;
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systemunit:=nil;
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objpasunit:=nil;
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refsymtable:=nil;
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aktprocsym:=nil;
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procprefix:='';
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registerdef:=true;
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{ macros }
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macros:=new(psymtable,init(macrosymtable));
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macros^.name:=stringdup('Conditionals for '+filename);
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default_macros;
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{ reset the unit or create a new program }
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if assigned(current_module) then
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begin
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{current_module^.reset this is wrong !! }
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scanner:=current_module^.scanner;
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current_module^.reset;
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current_module^.scanner:=scanner;
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end
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else
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begin
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current_module:=new(pmodule,init(filename,false));
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main_module:=current_module;
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end;
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{ Load current state from the init values }
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aktlocalswitches:=initlocalswitches;
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aktmoduleswitches:=initmoduleswitches;
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aktmodeswitches:=initmodeswitches;
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aktpackrecords:=initpackrecords;
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aktpackenum:=initpackenum;
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aktoutputformat:=initoutputformat;
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aktoptprocessor:=initoptprocessor;
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aktasmmode:=initasmmode;
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{ we need this to make the system unit }
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if compile_system then
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aktmoduleswitches:=aktmoduleswitches+[cs_compilesystem];
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{ startup scanner, and save in current_module }
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current_scanner:=new(pscannerfile,Init(filename));
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current_scanner^.readtoken;
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prev_scanner:=current_module^.scanner;
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current_module^.scanner:=current_scanner;
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{ init code generator for a new module }
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codegen_newmodule;
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{$ifdef newcg}
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{$ifdef i386}
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cg:=new(pcg386,init);
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{$endif i386}
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{$endif newcg}
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{ If the compile level > 1 we get a nice "unit expected" error
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message if we are trying to use a program as unit.}
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{$ifdef USEEXCEPT}
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if setjmp(recoverpos)=0 then
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begin
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oldrecoverpos:=recoverpospointer;
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recoverpospointer:=@recoverpos;
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{$endif USEEXCEPT}
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if (token=_UNIT) or (compile_level>1) then
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begin
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current_module^.is_unit:=true;
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proc_unit;
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end
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else
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proc_program(token=_LIBRARY);
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{$ifdef USEEXCEPT}
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recoverpospointer:=oldrecoverpos;
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end
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else
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begin
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recoverpospointer:=oldrecoverpos;
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longjump_used:=true;
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end;
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{$endif USEEXCEPT}
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{ clear memory }
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{$ifdef Splitheap}
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if testsplit then
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begin
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{ temp heap should be empty after that !!!}
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codegen_donemodule;
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Releasetempheap;
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end;
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{$endif Splitheap}
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{ restore old state, close trees, > 0.99.5 has heapblocks, so
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it's the default to release the trees }
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codegen_donemodule;
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{$ifdef newcg}
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dispose(cg,done);
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{$endif newcg}
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{ free ppu }
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if assigned(current_module^.ppufile) then
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begin
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dispose(current_module^.ppufile,done);
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current_module^.ppufile:=nil;
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end;
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{ free scanner }
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dispose(current_scanner,done);
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{ restore previous scanner !! }
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current_module^.scanner:=prev_scanner;
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if assigned(prev_scanner) then
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prev_scanner^.invalid:=true;
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{ free macros }
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{!!! No check for unused macros yet !!! }
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dispose(macros,done);
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if (compile_level>1) then
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begin
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{$ifdef newcg}
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cg:=oldcg;
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{$endif newcg}
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{ restore scanner }
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c:=oldc;
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pattern:=oldpattern;
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orgpattern:=oldorgpattern;
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token:=oldtoken;
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idtoken:=oldidtoken;
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tokenpos:=oldtokenpos;
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block_type:=old_block_type;
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current_scanner:=oldcurrent_scanner;
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{ restore cg }
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nextlabelnr:=oldnextlabelnr;
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parse_only:=oldparse_only;
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{ restore asmlists }
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exprasmlist:=oldexprasmlist;
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datasegment:=olddatasegment;
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bsssegment:=oldbsssegment;
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codesegment:=oldcodesegment;
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consts:=oldconsts;
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debuglist:=olddebuglist;
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externals:=oldexternals;
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internals:=oldinternals;
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importssection:=oldimports;
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exportssection:=oldexports;
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resourcesection:=oldresource;
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rttilist:=oldrttilist;
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asmsymbollist:=oldasmsymbollist;
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{ restore symtable state }
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refsymtable:=oldrefsymtable;
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symtablestack:=oldsymtablestack;
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macros:=oldmacros;
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aktprocsym:=oldaktprocsym;
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procprefix:=oldprocprefix;
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aktlocalswitches:=oldaktlocalswitches;
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aktmoduleswitches:=oldaktmoduleswitches;
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aktpackrecords:=oldaktpackrecords;
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aktoutputformat:=oldaktoutputformat;
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aktoptprocessor:=oldaktoptprocessor;
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aktasmmode:=oldaktasmmode;
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aktfilepos:=oldaktfilepos;
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aktmodeswitches:=oldaktmodeswitches;
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end;
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{ Shut down things when the last file is compiled }
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if (compile_level=1) then
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begin
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{ Close script }
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if (not AsmRes.Empty) then
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begin
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Message1(exec_i_closing_script,AsmRes.Fn);
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AsmRes.WriteToDisk;
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end;
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{$ifdef BrowserLog}
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{ Write Browser Log }
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if cs_browser in aktmoduleswitches then
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begin
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if browserlog.elements_to_list^.empty then
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begin
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Message1(parser_i_writing_browser_log,browserlog.Fname);
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WriteBrowserLog;
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end
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else
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browserlog.list_elements;
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end;
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{$endif BrowserLog}
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{$ifdef BrowserCol}
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{ Write Browser Collections }
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CreateBrowserCol;
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{$endif}
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{ Free last aktprocsym }
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if assigned(aktprocsym) and (aktprocsym^.owner=nil) then
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begin
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{ init parts are not needed in units !! }
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if current_module^.is_unit then
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aktprocsym^.definition^.forwarddef:=false;
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dispose(aktprocsym,done);
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end;
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end;
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dec(compile_level);
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parser_current_file:=prev_name^;
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stringdispose(prev_name);
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{$ifdef USEEXCEPT}
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if longjump_used then
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longjmp(recoverpospointer^,1);
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{$endif USEEXCEPT}
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end;
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end.
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{
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$Log$
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Revision 1.71 1999-03-26 00:05:33 peter
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* released valintern
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+ deffile is now removed when compiling is finished
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* ^( compiles now correct
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+ static directive
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* shrd fixed
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Revision 1.70 1999/03/24 23:17:10 peter
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* fixed bugs 212,222,225,227,229,231,233
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Revision 1.69 1999/02/25 21:02:40 peter
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* ag386bin updates
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+ coff writer
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Revision 1.68 1999/02/02 16:39:41 peter
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* reset c,pattern,orgpattern also at startup
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Revision 1.67 1999/01/27 13:05:44 pierre
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* give include file name on error
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Revision 1.66 1999/01/23 23:29:35 florian
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* first running version of the new code generator
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* when compiling exceptions under Linux fixed
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Revision 1.65 1999/01/22 12:19:31 pierre
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+ currently compiled file name added on errors
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Revision 1.64 1999/01/12 14:25:29 peter
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+ BrowserLog for browser.log generation
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+ BrowserCol for browser info in TCollections
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* released all other UseBrowser
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Revision 1.63 1998/12/11 00:03:26 peter
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+ globtype,tokens,version unit splitted from globals
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Revision 1.62 1998/12/01 12:51:21 peter
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* fixed placing of ppas.sh and link.res when using -FE
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Revision 1.61 1998/11/10 10:09:11 peter
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* va_list -> array of const
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Revision 1.60 1998/10/28 18:26:14 pierre
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* removed some erros after other errors (introduced by useexcept)
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* stabs works again correctly (for how long !)
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Revision 1.59 1998/10/26 17:15:18 pierre
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+ added two level of longjump to
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allow clean freeing of used memory on errors
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Revision 1.58 1998/10/16 08:50:02 peter
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* reset_gdb_info -> reset_global_def becuase it also resets rangenr !
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Revision 1.57 1998/10/08 17:17:23 pierre
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* current_module old scanner tagged as invalid if unit is recompiled
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+ added ppheap for better info on tracegetmem of heaptrc
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(adds line column and file index)
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* several memory leaks removed ith help of heaptrc !!
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Revision 1.56 1998/10/08 13:48:45 peter
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* fixed memory leaks for do nothing source
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* fixed unit interdependency
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Revision 1.55 1998/10/06 17:16:53 pierre
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* some memory leaks fixed (thanks to Peter for heaptrc !)
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Revision 1.54 1998/10/05 21:33:23 peter
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* fixed 161,165,166,167,168
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Revision 1.53 1998/09/30 16:43:36 peter
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* fixed unit interdependency with circular uses
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Revision 1.52 1998/09/28 16:57:22 pierre
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* changed all length(p^.value_str^) into str_length(p)
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to get it work with and without ansistrings
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* changed sourcefiles field of tmodule to a pointer
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Revision 1.51 1998/09/26 17:45:30 peter
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+ idtoken and only one token table
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Revision 1.50 1998/09/24 23:49:08 peter
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+ aktmodeswitches
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Revision 1.49 1998/09/23 15:39:07 pierre
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* browser bugfixes
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was adding a reference when looking for the symbol
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if -bSYM_NAME was used
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Revision 1.48 1998/09/22 17:13:48 pierre
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+ browsing updated and developed
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records and objects fields are also stored
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Revision 1.47 1998/09/21 09:00:18 peter
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* reset_gdb_info only when debuginfo is set
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Revision 1.46 1998/09/21 08:45:12 pierre
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+ added vmt_offset in tobjectdef.write for fututre use
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(first steps to have objects without vmt if no virtual !!)
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+ added fpu_used field for tabstractprocdef :
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sets this level to 2 if the functions return with value in FPU
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(is then set to correct value at parsing of implementation)
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THIS MIGHT refuse some code with FPU expression too complex
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that were accepted before and even in some cases
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that don't overflow in fact
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( like if f : float; is a forward that finally in implementation
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only uses one fpu register !!)
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Nevertheless I think that it will improve security on
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FPU operations !!
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* most other changes only for UseBrowser code
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(added symtable references for record and objects)
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local switch for refs to args and local of each function
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(static symtable still missing)
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UseBrowser still not stable and probably broken by
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the definition hash array !!
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Revision 1.45 1998/09/18 08:01:35 pierre
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+ improvement on the usebrowser part
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(does not work correctly for now)
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Revision 1.44 1998/09/10 15:25:34 daniel
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+ Added maxheapsize.
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* Corrected semi-bug in calling the assembler and the linker
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Revision 1.43 1998/09/09 15:33:06 peter
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* fixed in_global to allow directives also after interface token
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Revision 1.42 1998/09/04 08:41:59 peter
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* updated some error messages
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Revision 1.41 1998/09/01 12:53:24 peter
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+ aktpackenum
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Revision 1.40 1998/09/01 07:54:19 pierre
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* UseBrowser a little updated (might still be buggy !!)
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* bug in psub.pas in function specifier removed
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* stdcall allowed in interface and in implementation
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(FPC will not yet complain if it is missing in either part
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because stdcall is only a dummy !!)
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Revision 1.39 1998/08/26 10:07:09 peter
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* dispose trees is now default for all > 0.99.5 compiles
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Revision 1.38 1998/08/18 20:52:20 peter
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* renamed in_main to in_global which is more logical
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Revision 1.37 1998/08/17 09:17:49 peter
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* static/shared linking updates
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Revision 1.36 1998/08/14 21:56:36 peter
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* setting the outputfile using -o works now to create static libs
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Revision 1.35 1998/08/12 19:22:09 peter
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* reset also the link* lists when recompiling an existing unit
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Revision 1.34 1998/08/10 23:58:56 peter
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* fixed asmlist dispose for 0.99.5
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Revision 1.33 1998/08/10 14:50:07 peter
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+ localswitches, moduleswitches, globalswitches splitting
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Revision 1.32 1998/08/10 10:18:28 peter
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+ Compiler,Comphook unit which are the new interface units to the
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compiler
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Revision 1.31 1998/07/14 21:46:46 peter
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* updated messages file
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Revision 1.30 1998/07/14 14:46:49 peter
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* released NEWINPUT
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Revision 1.29 1998/07/07 11:19:59 peter
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+ NEWINPUT for a better inputfile and scanner object
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Revision 1.28 1998/06/25 11:15:33 pierre
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* ppu files where not closed in newppu !!
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second compilation was impossible due to too many opened files
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(not visible in 'make cycle' as we remove all the ppu files)
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Revision 1.27 1998/06/17 14:10:15 peter
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* small os2 fixes
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* fixed interdependent units with newppu (remake3 under linux works now)
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Revision 1.26 1998/06/16 08:56:23 peter
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+ targetcpu
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* cleaner pmodules for newppu
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Revision 1.25 1998/06/15 15:38:07 pierre
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* small bug in systems.pas corrected
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+ operators in different units better hanlded
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Revision 1.24 1998/06/13 00:10:08 peter
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* working browser and newppu
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* some small fixes against crashes which occured in bp7 (but not in
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fpc?!)
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Revision 1.23 1998/06/08 22:59:48 peter
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* smartlinking works for win32
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* some defines to exclude some compiler parts
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Revision 1.22 1998/06/05 17:47:28 peter
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* some better uses clauses
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Revision 1.21 1998/06/04 23:51:49 peter
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* m68k compiles
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+ .def file creation moved to gendef.pas so it could also be used
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for win32
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Revision 1.20 1998/06/03 22:48:55 peter
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+ wordbool,longbool
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* rename bis,von -> high,low
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* moved some systemunit loading/creating to psystem.pas
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Revision 1.19 1998/05/27 19:45:04 peter
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* symtable.pas splitted into includefiles
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* symtable adapted for $ifdef NEWPPU
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Revision 1.18 1998/05/23 01:21:15 peter
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+ aktasmmode, aktoptprocessor, aktoutputformat
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+ smartlink per module $SMARTLINK-/+ (like MMX) and moved to aktswitches
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+ $LIBNAME to set the library name where the unit will be put in
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* splitted cgi386 a bit (codeseg to large for bp7)
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* nasm, tasm works again. nasm moved to ag386nsm.pas
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Revision 1.17 1998/05/20 09:42:34 pierre
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+ UseTokenInfo now default
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* unit in interface uses and implementation uses gives error now
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* only one error for unknown symbol (uses lastsymknown boolean)
|
|
the problem came from the label code !
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+ first inlined procedures and function work
|
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(warning there might be allowed cases were the result is still wrong !!)
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* UseBrower updated gives a global list of all position of all used symbols
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with switch -gb
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Revision 1.16 1998/05/12 10:47:00 peter
|
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* moved printstatus to verb_def
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+ V_Normal which is between V_Error and V_Warning and doesn't have a
|
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prefix like error: warning: and is included in V_Default
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* fixed some messages
|
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* first time parameter scan is only for -v and -T
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- removed old style messages
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Revision 1.15 1998/05/11 13:07:54 peter
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+ $ifdef NEWPPU for the new ppuformat
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+ $define GDB not longer required
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* removed all warnings and stripped some log comments
|
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* no findfirst/findnext anymore to remove smartlink *.o files
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Revision 1.14 1998/05/06 18:36:53 peter
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* tai_section extended with code,data,bss sections and enumerated type
|
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* ident 'compiled by FPC' moved to pmodules
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* small fix for smartlink
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Revision 1.13 1998/05/06 08:38:42 pierre
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* 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)
|
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Only with ExtDebug
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Revision 1.12 1998/05/04 17:54:28 peter
|
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+ smartlinking works (only case jumptable left todo)
|
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* redesign of systems.pas to support assemblers and linkers
|
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+ Unitname is now also in the PPU-file, increased version to 14
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Revision 1.11 1998/05/01 16:38:45 florian
|
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* 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
|
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|
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Revision 1.10 1998/05/01 07:43:56 florian
|
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+ basics for rtti implemented
|
|
+ switch $m (generate rtti for published sections)
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Revision 1.9 1998/04/30 15:59:40 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 1.8 1998/04/29 10:33:55 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
|
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|
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Revision 1.7 1998/04/27 23:10:28 peter
|
|
+ new scanner
|
|
* $makelib -> if smartlink
|
|
* small filename fixes pmodule.setfilename
|
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* moved import from files.pas -> import.pas
|
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|
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Revision 1.6 1998/04/21 10:16:48 peter
|
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* patches from strasbourg
|
|
* objects is not used anymore in the fpc compiled version
|
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|
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Revision 1.5 1998/04/10 14:41:43 peter
|
|
* removed some Hints
|
|
* small speed optimization for AsmLn
|
|
|
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Revision 1.4 1998/04/08 16:58:03 pierre
|
|
* several bugfixes
|
|
ADD ADC and AND are also sign extended
|
|
nasm output OK (program still crashes at end
|
|
and creates wrong assembler files !!)
|
|
procsym types sym in tdef removed !!
|
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|
|
Revision 1.3 1998/04/07 22:45:04 florian
|
|
* bug0092, bug0115 and bug0121 fixed
|
|
+ packed object/class/array
|
|
}
|
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|