{ Copyright (c) 1998-2002 by Florian Klaempfl This unit implements the first loading and searching of the modules This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. **************************************************************************** } unit fmodule; {$i fpcdefs.inc} {$ifdef go32v2} {$define shortasmprefix} {$endif} {$ifdef watcom} {$define shortasmprefix} {$endif} {$ifdef tos} {$define shortasmprefix} {$endif} {$ifdef OS2} { Allthough OS/2 supports long filenames I play it safe and use 8.3 filenames, because this allows the compiler to run on a FAT partition. (DM) } {$define shortasmprefix} {$endif} interface uses cutils,cclasses,cfileutl, globtype,finput,ogbase, symbase,symconst,symsym,symcpu, wpobase, aasmbase,aasmtai,aasmdata; const UNSPECIFIED_LIBRARY_NAME = ''; type trecompile_reason = (rr_unknown, rr_noppu,rr_sourcenewer,rr_build,rr_crcchanged ); { unit options } tmoduleoption = (mo_none, mo_hint_deprecated, mo_hint_platform, mo_hint_library, mo_hint_unimplemented, mo_hint_experimental, mo_has_deprecated_msg ); tmoduleoptions = set of tmoduleoption; tlinkcontaineritem=class(tlinkedlistitem) public data : TPathStr; needlink : cardinal; constructor Create(const s:TPathStr;m:cardinal); end; tlinkcontainer=class(tlinkedlist) procedure add(const s : TPathStr;m:cardinal); function get(var m:cardinal) : TPathStr; function getusemask(mask:cardinal) : TPathStr; function find(const s:TPathStr):boolean; end; tmodule = class; tused_unit = class; tunitmaprec = record u : tmodule; { number of references } refs : longint; { index in the derefmap } derefidx : longint; end; punitmap = ^tunitmaprec; tderefmaprec = record u : tmodule; { modulename, used during ppu load } modulename : pshortstring; end; pderefmap = ^tderefmaprec; { tmodule } tmodule = class(tmodulebase) private FImportLibraryList : TFPHashObjectList; public do_reload, { force reloading of the unit } do_compile, { need to compile the sources } sources_avail, { if all sources are reachable } interface_compiled, { if the interface section has been parsed/compiled/loaded } is_dbginfo_written, is_unit, in_interface, { processing the implementation part? } { allow global settings } in_global : boolean; { Whether a mode switch is still allowed at this point in the parsing.} mode_switch_allowed, { generate pic helper which loads eip in ecx (for leave procedures) } requires_ecx_pic_helper, { generate pic helper which loads eip in ebx (for non leave procedures) } requires_ebx_pic_helper : boolean; interface_only: boolean; { interface-only macpas unit; flag does not need saving/restoring to ppu } mainfilepos : tfileposinfo; recompile_reason : trecompile_reason; { the reason why the unit should be recompiled } crc, interface_crc, indirect_crc : cardinal; flags : cardinal; { the PPU flags } islibrary : boolean; { if it is a library (win32 dll) } IsPackage : boolean; moduleid : longint; unitmap : punitmap; { mapping of all used units } unitmapsize : longint; { number of units in the map } derefmap : pderefmap; { mapping of all units needed for deref } derefmapcnt : longint; { number of units in the map } derefmapsize : longint; { number of units in the map } derefdataintflen : longint; derefdata : tdynamicarray; checkforwarddefs, deflist, symlist : TFPObjectList; ptrdefs : tPtrDefHashSet; { list of pointerdefs created in this module so we can reuse them (not saved/restored) } arraydefs : THashSet; { list of single-element-arraydefs created in this module so we can reuse them (not saved/restored) } ansistrdef : tobject; { an ansistring def redefined for the current module } wpoinfo : tunitwpoinfobase; { whole program optimization-related information that is generated during the current run for this unit } globalsymtable, { pointer to the global symtable of this unit } localsymtable : TSymtable;{ pointer to the local symtable of this unit } globalmacrosymtable, { pointer to the global macro symtable of this unit } localmacrosymtable : TSymtable;{ pointer to the local macro symtable of this unit } scanner : TObject; { scanner object used } procinfo : TObject; { current procedure being compiled } asmdata : TObject; { Assembler data } asmprefix : pshortstring; { prefix for the smartlink asmfiles } debuginfo : TObject; loaded_from : tmodule; _exports : tlinkedlist; dllscannerinputlist : TFPHashList; resourcefiles : TCmdStrList; linkunitofiles, linkunitstaticlibs, linkunitsharedlibs, linkotherofiles, { objects,libs loaded from the source } linkothersharedlibs, { using $L or $LINKLIB or import lib (for linux) } linkotherstaticlibs, linkotherframeworks : tlinkcontainer; mainname : pshortstring; { alternate name for "main" procedure } used_units : tlinkedlist; dependent_units : tlinkedlist; localunitsearchpath, { local searchpaths } localobjectsearchpath, localincludesearchpath, locallibrarysearchpath, localframeworksearchpath : TSearchPathList; moduleoptions: tmoduleoptions; deprecatedmsg: pshortstring; { contains a list of types that are extended by helper types; the key is the full name of the type and the data is a TFPObjectList of tobjectdef instances (the helper defs) } extendeddefs: TFPHashObjectList; { contains a list of the current topmost non-generic symbol for a typename of which at least one generic exists; the key is the non-generic typename and the data is a TFPObjectList of tgenericdummyentry instances whereby the last one is the current top most one } genericdummysyms: TFPHashObjectList; { this contains a list of units that needs to be waited for until the unit can be finished (code generated, etc.); this is needed to handle specializations in circular unit usages correctly } waitingforunit: tfpobjectlist; { this contains a list of all units that are waiting for this unit to be finished } waitingunits: tfpobjectlist; finishstate: pointer; globalstate: pointer; namespace: pshortstring; { for JVM target: corresponds to Java package name } { for targets that initialise typed constants via explicit assignments instead of by generating an initialised data section (holds typed constant assignments at the module level; does not have to be saved into the ppu file, because translated into code during compilation) -- actual type: tnode (but fmodule should not depend on node) } tcinitcode : tobject; {create creates a new module which name is stored in 's'. LoadedFrom points to the module calling it. It is nil for the first compiled module. This allow inheritence of all path lists. MUST pay attention to that when creating link.res!!!!(mazen)} constructor create(LoadedFrom:TModule;const amodulename: string; const afilename:TPathStr;_is_unit:boolean); destructor destroy;override; procedure reset;virtual; procedure adddependency(callermodule:tmodule); procedure flagdependent(callermodule:tmodule); function addusedunit(hp:tmodule;inuses:boolean;usym:tunitsym):tused_unit; procedure updatemaps; function derefidx_unit(id:longint):longint; function resolve_unit(id:longint):tmodule; procedure allunitsused; procedure end_of_parsing;virtual; procedure setmodulename(const s:string); procedure AddExternalImport(const libname,symname,symmangledname:string;OrdNr: longint;isvar:boolean;ImportByOrdinalOnly:boolean); property ImportLibraryList : TFPHashObjectList read FImportLibraryList; end; tused_unit = class(tlinkedlistitem) checksum, interface_checksum, indirect_checksum: cardinal; in_uses, in_interface : boolean; u : tmodule; unitsym : tunitsym; constructor create(_u : tmodule;intface,inuses:boolean;usym:tunitsym); procedure check_hints; end; tdependent_unit = class(tlinkedlistitem) u : tmodule; constructor create(_u : tmodule); end; var main_module : tmodule; { Main module of the program } current_module : tmodule; { Current module which is compiled or loaded } compiled_module : tmodule; { Current module which is compiled } usedunits : tlinkedlist; { Used units for this program } loaded_units : tlinkedlist; { All loaded units } unloaded_units : tlinkedlist; { Units removed from loaded_units, to be freed } SmartLinkOFiles : TCmdStrList; { List of .o files which are generated, used to delete them after linking } procedure set_current_module(p:tmodule); function get_module(moduleindex : longint) : tmodule; function get_source_file(moduleindex,fileindex : longint) : tinputfile; procedure addloadedunit(hp:tmodule); function find_module_from_symtable(st:tsymtable):tmodule; implementation uses SysUtils,globals, verbose,systems, scanner,ppu,dbgbase, procinfo,symdef; {$ifdef MEMDEBUG} var memsymtable : TMemDebug; {$endif} {***************************************************************************** Global Functions *****************************************************************************} function find_module_from_symtable(st:tsymtable):tmodule; var hp : tmodule; begin result:=nil; hp:=tmodule(loaded_units.first); while assigned(hp) do begin if (hp.moduleid=st.moduleid) then begin result:=hp; exit; end; hp:=tmodule(hp.next); end; end; procedure set_current_module(p:tmodule); begin { save the state of the scanner } if assigned(current_scanner) then current_scanner.tempcloseinputfile; { set new module } current_module:=p; { restore previous module settings } Fillchar(current_filepos,0,sizeof(current_filepos)); if assigned(current_module) then begin current_asmdata:=tasmdata(current_module.asmdata); current_debuginfo:=tdebuginfo(current_module.debuginfo); { restore scanner and file positions } current_scanner:=tscannerfile(current_module.scanner); if assigned(current_scanner) then begin current_scanner.tempopeninputfile; current_scanner.gettokenpos; parser_current_file:=current_scanner.inputfile.name; end else begin current_filepos.moduleindex:=current_module.unit_index; parser_current_file:=''; end; end else begin current_asmdata:=nil; current_scanner:=nil; current_debuginfo:=nil; end; end; function get_module(moduleindex : longint) : tmodule; var hp : tmodule; begin result:=nil; if moduleindex=0 then exit; result:=current_module; if not(assigned(loaded_units)) then exit; hp:=tmodule(loaded_units.first); while assigned(hp) and (hp.unit_index<>moduleindex) do hp:=tmodule(hp.next); result:=hp; end; function get_source_file(moduleindex,fileindex : longint) : tinputfile; var hp : tmodule; begin hp:=get_module(moduleindex); if assigned(hp) then get_source_file:=hp.sourcefiles.get_file(fileindex) else get_source_file:=nil; end; procedure addloadedunit(hp:tmodule); begin hp.moduleid:=loaded_units.count; loaded_units.concat(hp); end; {**************************************************************************** TLinkContainerItem ****************************************************************************} constructor TLinkContainerItem.Create(const s:TPathStr;m:cardinal); begin inherited Create; data:=s; needlink:=m; end; {**************************************************************************** TLinkContainer ****************************************************************************} procedure TLinkContainer.add(const s : TPathStr;m:cardinal); begin inherited concat(TLinkContainerItem.Create(s,m)); end; function TLinkContainer.get(var m:cardinal) : TPathStr; var p : tlinkcontaineritem; begin p:=tlinkcontaineritem(inherited getfirst); if p=nil then begin get:=''; m:=0; end else begin get:=p.data; m:=p.needlink; p.free; end; end; function TLinkContainer.getusemask(mask:cardinal) : TPathStr; var p : tlinkcontaineritem; found : boolean; begin found:=false; repeat p:=tlinkcontaineritem(inherited getfirst); if p=nil then begin getusemask:=''; exit; end; getusemask:=p.data; found:=(p.needlink and mask)<>0; p.free; until found; end; function TLinkContainer.find(const s:TPathStr):boolean; var newnode : tlinkcontaineritem; begin find:=false; newnode:=tlinkcontaineritem(First); while assigned(newnode) do begin if newnode.data=s then begin find:=true; exit; end; newnode:=tlinkcontaineritem(newnode.next); end; end; {**************************************************************************** TUSED_UNIT ****************************************************************************} constructor tused_unit.create(_u : tmodule;intface,inuses:boolean;usym:tunitsym); begin u:=_u; in_interface:=intface; in_uses:=inuses; unitsym:=usym; if _u.state=ms_compiled then begin checksum:=u.crc; interface_checksum:=u.interface_crc; indirect_checksum:=u.indirect_crc; end else begin checksum:=0; interface_checksum:=0; indirect_checksum:=0; end; end; procedure tused_unit.check_hints; var uname: pshortstring; begin uname:=u.realmodulename; if mo_hint_deprecated in u.moduleoptions then if (mo_has_deprecated_msg in u.moduleoptions) and (u.deprecatedmsg <> nil) then MessagePos2(unitsym.fileinfo,sym_w_deprecated_unit_with_msg,uname^,u.deprecatedmsg^) else MessagePos1(unitsym.fileinfo,sym_w_deprecated_unit,uname^); if mo_hint_experimental in u.moduleoptions then MessagePos1(unitsym.fileinfo,sym_w_experimental_unit,uname^); if mo_hint_platform in u.moduleoptions then MessagePos1(unitsym.fileinfo,sym_w_non_portable_unit,uname^); if mo_hint_library in u.moduleoptions then MessagePos1(unitsym.fileinfo,sym_w_library_unit,uname^); if mo_hint_unimplemented in u.moduleoptions then MessagePos1(unitsym.fileinfo,sym_w_non_implemented_unit,uname^); end; {**************************************************************************** TDENPENDENT_UNIT ****************************************************************************} constructor tdependent_unit.create(_u : tmodule); begin u:=_u; end; {**************************************************************************** TMODULE ****************************************************************************} constructor tmodule.create(LoadedFrom:TModule;const amodulename: string; const afilename:TPathStr;_is_unit:boolean); var n:string; fn:TPathStr; begin if amodulename='' then n:=ChangeFileExt(ExtractFileName(afilename),'') else n:=amodulename; if afilename='' then fn:=amodulename else fn:=afilename; { Programs have the name 'Program' to don't conflict with dup id's } if _is_unit then inherited create(amodulename) else inherited create('Program'); mainsource:=fn; { Dos has the famous 8.3 limit :( } {$ifdef shortasmprefix} asmprefix:=stringdup(FixFileName('as')); {$else} asmprefix:=stringdup(FixFileName(n)); {$endif} setfilename(fn,true); localunitsearchpath:=TSearchPathList.Create; localobjectsearchpath:=TSearchPathList.Create; localincludesearchpath:=TSearchPathList.Create; locallibrarysearchpath:=TSearchPathList.Create; localframeworksearchpath:=TSearchPathList.Create; used_units:=TLinkedList.Create; dependent_units:=TLinkedList.Create; resourcefiles:=TCmdStrList.Create; linkunitofiles:=TLinkContainer.Create; linkunitstaticlibs:=TLinkContainer.Create; linkunitsharedlibs:=TLinkContainer.Create; linkotherofiles:=TLinkContainer.Create; linkotherstaticlibs:=TLinkContainer.Create; linkothersharedlibs:=TLinkContainer.Create; linkotherframeworks:=TLinkContainer.Create; mainname:=nil; FImportLibraryList:=TFPHashObjectList.Create(true); crc:=0; interface_crc:=0; indirect_crc:=0; flags:=0; scanner:=nil; unitmap:=nil; unitmapsize:=0; derefmap:=nil; derefmapsize:=0; derefmapcnt:=0; derefdata:=TDynamicArray.Create(1024); derefdataintflen:=0; deflist:=TFPObjectList.Create(false); symlist:=TFPObjectList.Create(false); ptrdefs:=cPtrDefHashSet.Create; arraydefs:=THashSet.Create(64,true,false); ansistrdef:=nil; wpoinfo:=nil; checkforwarddefs:=TFPObjectList.Create(false); extendeddefs:=TFPHashObjectList.Create(true); genericdummysyms:=tfphashobjectlist.create(true); waitingforunit:=tfpobjectlist.create(false); waitingunits:=tfpobjectlist.create(false); globalsymtable:=nil; localsymtable:=nil; globalmacrosymtable:=nil; localmacrosymtable:=nil; loaded_from:=LoadedFrom; do_reload:=false; do_compile:=false; sources_avail:=true; mainfilepos.line:=0; mainfilepos.column:=0; mainfilepos.fileindex:=0; recompile_reason:=rr_unknown; in_interface:=true; in_global:=true; is_unit:=_is_unit; islibrary:=false; ispackage:=false; is_dbginfo_written:=false; mode_switch_allowed:= true; moduleoptions:=[]; deprecatedmsg:=nil; namespace:=nil; tcinitcode:=nil; _exports:=TLinkedList.Create; dllscannerinputlist:=TFPHashList.Create; asmdata:=casmdata.create(modulename); InitDebugInfo(self,false); end; destructor tmodule.Destroy; var i : longint; current_debuginfo_reset : boolean; begin if assigned(unitmap) then freemem(unitmap); if assigned(derefmap) then begin for i:=0 to derefmapcnt-1 do stringdispose(derefmap[i].modulename); freemem(derefmap); end; if assigned(_exports) then _exports.free; if assigned(dllscannerinputlist) then dllscannerinputlist.free; if assigned(scanner) then begin { also update current_scanner if it was pointing to this module } if current_scanner=tscannerfile(scanner) then current_scanner:=nil; tscannerfile(scanner).free; end; if assigned(asmdata) then begin if current_asmdata=asmdata then current_asmdata:=nil; asmdata.free; end; if assigned(procinfo) then begin if current_procinfo=tprocinfo(procinfo) then begin current_procinfo:=nil; current_structdef:=nil; current_genericdef:=nil; current_specializedef:=nil; end; { release procinfo tree } tprocinfo(procinfo).destroy_tree; end; DoneDebugInfo(self,current_debuginfo_reset); used_units.free; dependent_units.free; resourcefiles.Free; linkunitofiles.Free; linkunitstaticlibs.Free; linkunitsharedlibs.Free; linkotherofiles.Free; linkotherstaticlibs.Free; linkothersharedlibs.Free; linkotherframeworks.Free; stringdispose(mainname); FImportLibraryList.Free; extendeddefs.Free; genericdummysyms.free; waitingforunit.free; waitingunits.free; stringdispose(asmprefix); stringdispose(deprecatedmsg); stringdispose(namespace); tcinitcode.free; localunitsearchpath.Free; localobjectsearchpath.free; localincludesearchpath.free; locallibrarysearchpath.free; localframeworksearchpath.free; {$ifdef MEMDEBUG} memsymtable.start; {$endif} derefdata.free; deflist.free; symlist.free; ptrdefs.free; arraydefs.free; ansistrdef:=nil; wpoinfo.free; checkforwarddefs.free; globalsymtable.free; localsymtable.free; globalmacrosymtable.free; localmacrosymtable.free; {$ifdef MEMDEBUG} memsymtable.stop; {$endif} inherited Destroy; end; procedure tmodule.reset; var i : longint; current_debuginfo_reset : boolean; begin if assigned(scanner) then begin { also update current_scanner if it was pointing to this module } if current_scanner=tscannerfile(scanner) then current_scanner:=nil; tscannerfile(scanner).free; scanner:=nil; end; if assigned(procinfo) then begin if current_procinfo=tprocinfo(procinfo) then begin current_procinfo:=nil; current_structdef:=nil; current_genericdef:=nil; current_specializedef:=nil; end; { release procinfo tree } tprocinfo(procinfo).destroy_tree; end; if assigned(asmdata) then begin if current_asmdata=asmdata then current_asmdata:=nil; asmdata.free; asmdata:=nil; end; DoneDebugInfo(self,current_debuginfo_reset); globalsymtable.free; globalsymtable:=nil; localsymtable.free; localsymtable:=nil; globalmacrosymtable.free; globalmacrosymtable:=nil; localmacrosymtable.free; localmacrosymtable:=nil; deflist.free; deflist:=TFPObjectList.Create(false); symlist.free; symlist:=TFPObjectList.Create(false); ptrdefs.free; ptrdefs:=cPtrDefHashSet.Create; arraydefs.free; arraydefs:=THashSet.Create(64,true,false); wpoinfo.free; wpoinfo:=nil; checkforwarddefs.free; checkforwarddefs:=TFPObjectList.Create(false); derefdata.free; derefdata:=TDynamicArray.Create(1024); if assigned(unitmap) then begin freemem(unitmap); unitmap:=nil; end; if assigned(derefmap) then begin for i:=0 to derefmapcnt-1 do stringdispose(derefmap[i].modulename); freemem(derefmap); derefmap:=nil; end; unitmapsize:=0; derefmapsize:=0; derefmapcnt:=0; derefdataintflen:=0; sourcefiles.free; sourcefiles:=tinputfilemanager.create; asmdata:=casmdata.create(modulename); InitDebugInfo(self,current_debuginfo_reset); _exports.free; _exports:=tlinkedlist.create; dllscannerinputlist.free; dllscannerinputlist:=TFPHashList.create; used_units.free; used_units:=TLinkedList.Create; dependent_units.free; dependent_units:=TLinkedList.Create; resourcefiles.Free; resourcefiles:=TCmdStrList.Create; linkunitofiles.Free; linkunitofiles:=TLinkContainer.Create; linkunitstaticlibs.Free; linkunitstaticlibs:=TLinkContainer.Create; linkunitsharedlibs.Free; linkunitsharedlibs:=TLinkContainer.Create; linkotherofiles.Free; linkotherofiles:=TLinkContainer.Create; linkotherstaticlibs.Free; linkotherstaticlibs:=TLinkContainer.Create; linkothersharedlibs.Free; linkothersharedlibs:=TLinkContainer.Create; linkotherframeworks.Free; linkotherframeworks:=TLinkContainer.Create; stringdispose(mainname); FImportLibraryList.Free; FImportLibraryList:=TFPHashObjectList.Create; do_compile:=false; do_reload:=false; interface_compiled:=false; in_interface:=true; in_global:=true; mode_switch_allowed:=true; stringdispose(deprecatedmsg); stringdispose(namespace); tcinitcode.free; tcinitcode:=nil; moduleoptions:=[]; is_dbginfo_written:=false; crc:=0; interface_crc:=0; indirect_crc:=0; flags:=0; mainfilepos.line:=0; mainfilepos.column:=0; mainfilepos.fileindex:=0; recompile_reason:=rr_unknown; { The following fields should not be reset: mainsource state loaded_from sources_avail } end; procedure tmodule.adddependency(callermodule:tmodule); begin { This is not needed for programs } if not callermodule.is_unit then exit; Message2(unit_u_add_depend_to,callermodule.modulename^,modulename^); dependent_units.concat(tdependent_unit.create(callermodule)); end; procedure tmodule.flagdependent(callermodule:tmodule); var pm : tdependent_unit; begin { flag all units that depend on this unit for reloading } pm:=tdependent_unit(current_module.dependent_units.first); while assigned(pm) do begin { We do not have to reload the unit that wants to load this unit, unless this unit is already compiled during the loading } if (pm.u=callermodule) and (pm.u.state<>ms_compiled) then Message1(unit_u_no_reload_is_caller,pm.u.modulename^) else if pm.u.state=ms_second_compile then Message1(unit_u_no_reload_in_second_compile,pm.u.modulename^) else begin pm.u.do_reload:=true; Message1(unit_u_flag_for_reload,pm.u.modulename^); end; pm:=tdependent_unit(pm.next); end; end; function tmodule.addusedunit(hp:tmodule;inuses:boolean;usym:tunitsym):tused_unit; var pu : tused_unit; begin pu:=tused_unit.create(hp,in_interface,inuses,usym); used_units.concat(pu); addusedunit:=pu; end; procedure tmodule.updatemaps; var oldmapsize : longint; hp : tmodule; i : longint; begin { Extend unitmap } oldmapsize:=unitmapsize; unitmapsize:=loaded_units.count; reallocmem(unitmap,unitmapsize*sizeof(tunitmaprec)); fillchar(unitmap[oldmapsize],(unitmapsize-oldmapsize)*sizeof(tunitmaprec),0); { Extend Derefmap } oldmapsize:=derefmapsize; derefmapsize:=loaded_units.count; reallocmem(derefmap,derefmapsize*sizeof(tderefmaprec)); fillchar(derefmap[oldmapsize],(derefmapsize-oldmapsize)*sizeof(tderefmaprec),0); { Add all units to unitmap } hp:=tmodule(loaded_units.first); i:=0; while assigned(hp) do begin if hp.moduleid>=unitmapsize then internalerror(200501151); { Verify old entries } if (ii) or (unitmap[hp.moduleid].u<>hp) then internalerror(200501156); end else begin unitmap[hp.moduleid].u:=hp; unitmap[hp.moduleid].derefidx:=-1; end; inc(i); hp:=tmodule(hp.next); end; end; function tmodule.derefidx_unit(id:longint):longint; begin if id>=unitmapsize then internalerror(2005011511); if unitmap[id].derefidx=-1 then begin unitmap[id].derefidx:=derefmapcnt; inc(derefmapcnt); derefmap[unitmap[id].derefidx].u:=unitmap[id].u; end; if unitmap[id].derefidx>=derefmapsize then internalerror(2005011514); result:=unitmap[id].derefidx; end; function tmodule.resolve_unit(id:longint):tmodule; var hp : tmodule; begin if id>=derefmapsize then internalerror(200306231); result:=derefmap[id].u; if not assigned(result) then begin if not assigned(derefmap[id].modulename) or (derefmap[id].modulename^='') then internalerror(200501159); hp:=tmodule(loaded_units.first); while assigned(hp) do begin { only check for units. The main program is also as a unit in the loaded_units list. We simply need to ignore this entry (PFV) } if hp.is_unit and (hp.modulename^=derefmap[id].modulename^) then break; hp:=tmodule(hp.next); end; if not assigned(hp) then internalerror(2005011510); derefmap[id].u:=hp; result:=hp; end; end; procedure tmodule.allunitsused; var pu : tused_unit; begin pu:=tused_unit(used_units.first); while assigned(pu) do begin if assigned(pu.u.globalsymtable) then begin if unitmap[pu.u.moduleid].u<>pu.u then internalerror(200501157); { Give a note when the unit is not referenced, skip this is for units with an initialization/finalization } if (unitmap[pu.u.moduleid].refs=0) and pu.in_uses and ((pu.u.flags and (uf_init or uf_finalize))=0) then CGMessagePos2(pu.unitsym.fileinfo,sym_n_unit_not_used,pu.u.realmodulename^,realmodulename^); end; pu:=tused_unit(pu.next); end; end; procedure tmodule.end_of_parsing; begin { free asmdata } if assigned(asmdata) then begin asmdata.free; asmdata:=nil; end; { free scanner } if assigned(scanner) then begin if current_scanner=tscannerfile(scanner) then current_scanner:=nil; tscannerfile(scanner).free; scanner:=nil; end; { free symtable stack } if assigned(symtablestack) then begin symtablestack.free; symtablestack:=nil; end; if assigned(macrosymtablestack) then begin macrosymtablestack.free; macrosymtablestack:=nil; end; end; procedure tmodule.setmodulename(const s:string); begin stringdispose(modulename); stringdispose(realmodulename); modulename:=stringdup(upper(s)); realmodulename:=stringdup(s); { also update asmlibrary names } current_asmdata.name:=modulename; end; procedure TModule.AddExternalImport(const libname,symname,symmangledname:string; OrdNr: longint;isvar:boolean;ImportByOrdinalOnly:boolean); var ImportLibrary,OtherIL : TImportLibrary; ImportSymbol : TImportSymbol; i : longint; begin ImportLibrary:=TImportLibrary(ImportLibraryList.Find(libname)); if not assigned(ImportLibrary) then ImportLibrary:=TImportLibrary.Create(ImportLibraryList,libname); ImportSymbol:=TImportSymbol(ImportLibrary.ImportSymbolList.Find(symname)); if not assigned(ImportSymbol) then begin { Check that the same name does not exist in another library } { If it does and the same mangled name is used, issue a warning } if ImportLibraryList.Count>1 then for i:=0 To ImportLibraryList.Count-1 do begin OtherIL:=TImportLibrary(ImportLibraryList.Items[i]); ImportSymbol:=TImportSymbol(OtherIL.ImportSymbolList.Find(symname)); if assigned(ImportSymbol) then begin if ImportSymbol.MangledName=symmangledname then begin CGMessage3(sym_w_library_overload,symname,libname,OtherIL.Name); break; end; end; end; if not ImportByOrdinalOnly then { negative ordinal number indicates import by name with ordinal number as hint } OrdNr:=-OrdNr; ImportSymbol:=TImportSymbol.Create(ImportLibrary.ImportSymbolList, symname,symmangledname,OrdNr,isvar); end; end; initialization {$ifdef MEMDEBUG} memsymtable:=TMemDebug.create('Symtables'); memsymtable.stop; {$endif MEMDEBUG} finalization {$ifdef MEMDEBUG} memsymtable.free; {$endif MEMDEBUG} end.