mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-05-18 15:02:33 +02:00
0567329343
record variables is now independent of their packrecords setting
(except for packrecords C, which already calculated a reasonable
alignment). This means that e.g. a packed record consisting of two
pointers will be aligned at sizeof(pointer) normally. The internal
alignment of the individual fields of packed records obviously did
not change, also not if those fields are records themselves.
* The size of records without any packing atributes is also padded to
become a multiple of this improved alignment calculation, which
means that the size of such records may change after this patch.
Always explicitly specify a packing for records which are used for
data storage/transmission if you want to have a consistent layout.
git-svn-id: trunk@8409 -
2126 lines
72 KiB
ObjectPascal
2126 lines
72 KiB
ObjectPascal
{
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Copyright (c) 1998-2002 by Florian Klaempfl, Pierre Muller
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This unit handles the symbol tables
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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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unit symtable;
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{$i fpcdefs.inc}
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interface
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uses
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{ common }
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cutils,cclasses,
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{ global }
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cpuinfo,globtype,tokens,
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{ symtable }
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symconst,symbase,symtype,symdef,symsym,
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{ ppu }
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ppu,
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{ assembler }
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aasmtai,aasmdata
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;
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{****************************************************************************
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Symtable types
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****************************************************************************}
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type
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tstoredsymtable = class(TSymtable)
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private
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b_needs_init_final : boolean;
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procedure _needs_init_final(sym:TObject;arg:pointer);
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procedure check_forward(sym:TObject;arg:pointer);
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procedure labeldefined(sym:TObject;arg:pointer);
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procedure varsymbolused(sym:TObject;arg:pointer);
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procedure TestPrivate(sym:TObject;arg:pointer);
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procedure objectprivatesymbolused(sym:TObject;arg:pointer);
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procedure unchain_overloads(sym:TObject;arg:pointer);
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procedure loaddefs(ppufile:tcompilerppufile);
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procedure loadsyms(ppufile:tcompilerppufile);
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procedure writedefs(ppufile:tcompilerppufile);
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procedure writesyms(ppufile:tcompilerppufile);
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public
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{ load/write }
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procedure ppuload(ppufile:tcompilerppufile);virtual;
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procedure ppuwrite(ppufile:tcompilerppufile);virtual;
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procedure buildderef;virtual;
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procedure buildderefimpl;virtual;
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procedure deref;virtual;
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procedure derefimpl;virtual;
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function checkduplicate(var hashedid:THashedIDString;sym:TSymEntry):boolean;override;
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procedure reset_all_defs;virtual;
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procedure allsymbolsused;
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procedure allprivatesused;
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procedure check_forwards;
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procedure checklabels;
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function needs_init_final : boolean;
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procedure unchain_overloaded;
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procedure testfordefaultproperty(sym:TObject;arg:pointer);
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end;
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tabstractrecordsymtable = class(tstoredsymtable)
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public
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usefieldalignment, { alignment to use for fields (PACKRECORDS value), C_alignment is C style }
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recordalignment, { alignment desired when inserting this record }
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fieldalignment, { alignment current alignment used when fields are inserted }
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padalignment : shortint; { size to a multiple of which the symtable has to be rounded up }
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constructor create(const n:string;usealign:shortint);
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procedure ppuload(ppufile:tcompilerppufile);override;
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procedure ppuwrite(ppufile:tcompilerppufile);override;
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procedure addfield(sym:tfieldvarsym);
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procedure insertfield(sym:tfieldvarsym);
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procedure addalignmentpadding;
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procedure insertdef(def:TDefEntry);override;
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function is_packed: boolean;
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protected
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procedure setdatasize(val: aint);
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_datasize : aint;
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{ size in bits of the data in case of bitpacked record. Only important during construction, }
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{ no need to save in/restore from ppu file. datasize is always (databitsize+7) div 8. }
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databitsize : aint;
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{ bitpacked? -> all fieldvarsym offsets are in bits instead of bytes }
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public
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property datasize : aint read _datasize write setdatasize;
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end;
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trecordsymtable = class(tabstractrecordsymtable)
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public
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constructor create(usealign:shortint);
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procedure insertunionst(unionst : trecordsymtable;offset : longint);
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end;
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tObjectSymtable = class(tabstractrecordsymtable)
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public
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constructor create(adefowner:tdef;const n:string;usealign:shortint);
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function checkduplicate(var hashedid:THashedIDString;sym:TSymEntry):boolean;override;
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end;
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{ tabstractlocalsymtable }
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tabstractlocalsymtable = class(tstoredsymtable)
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public
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procedure ppuwrite(ppufile:tcompilerppufile);override;
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function count_locals:longint;
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end;
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tlocalsymtable = class(tabstractlocalsymtable)
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public
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constructor create(adefowner:tdef;level:byte);
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function checkduplicate(var hashedid:THashedIDString;sym:TSymEntry):boolean;override;
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end;
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tparasymtable = class(tabstractlocalsymtable)
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public
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constructor create(adefowner:tdef;level:byte);
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function checkduplicate(var hashedid:THashedIDString;sym:TSymEntry):boolean;override;
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end;
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tabstractuniTSymtable = class(tstoredsymtable)
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public
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constructor create(const n : string;id:word);
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function iscurrentunit:boolean;override;
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end;
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tglobalsymtable = class(tabstractuniTSymtable)
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public
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unittypecount : word;
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constructor create(const n : string;id:word);
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procedure ppuload(ppufile:tcompilerppufile);override;
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procedure ppuwrite(ppufile:tcompilerppufile);override;
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function checkduplicate(var hashedid:THashedIDString;sym:TSymEntry):boolean;override;
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end;
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tstaticsymtable = class(tabstractuniTSymtable)
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public
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constructor create(const n : string;id:word);
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procedure ppuload(ppufile:tcompilerppufile);override;
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procedure ppuwrite(ppufile:tcompilerppufile);override;
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function checkduplicate(var hashedid:THashedIDString;sym:TSymEntry):boolean;override;
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end;
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twithsymtable = class(TSymtable)
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withrefnode : tobject; { tnode }
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constructor create(aowner:tdef;ASymList:TFPHashObjectList;refnode:tobject{tnode});
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destructor destroy;override;
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procedure clear;override;
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procedure insertdef(def:TDefEntry);override;
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end;
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tstt_excepTSymtable = class(TSymtable)
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public
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constructor create;
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end;
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tmacrosymtable = class(tstoredsymtable)
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public
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constructor create(exported: boolean);
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end;
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var
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systemunit : tglobalsymtable; { pointer to the system unit }
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{****************************************************************************
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Functions
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****************************************************************************}
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{*** Misc ***}
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function FullTypeName(def,otherdef:tdef):string;
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procedure incompatibletypes(def1,def2:tdef);
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procedure hidesym(sym:TSymEntry);
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procedure duplicatesym(var hashedid:THashedIDString;dupsym,origsym:TSymEntry);
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{*** Search ***}
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procedure addsymref(sym:tsym);
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function searchsym(const s : TIDString;out srsym:tsym;out srsymtable:TSymtable):boolean;
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function searchsym_type(const s : TIDString;out srsym:tsym;out srsymtable:TSymtable):boolean;
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function searchsym_in_module(pm:pointer;const s : TIDString;out srsym:tsym;out srsymtable:TSymtable):boolean;
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function searchsym_in_class(classh,contextclassh:tobjectdef;const s : TIDString;out srsym:tsym;out srsymtable:TSymtable):boolean;
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function searchsym_in_class_by_msgint(classh:tobjectdef;msgid:longint;out srdef : tdef;out srsym:tsym;out srsymtable:TSymtable):boolean;
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function searchsym_in_class_by_msgstr(classh:tobjectdef;const s:string;out srsym:tsym;out srsymtable:TSymtable):boolean;
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function search_system_type(const s: TIDString): ttypesym;
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function search_class_member(pd : tobjectdef;const s : string):tsym;
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function search_assignment_operator(from_def,to_def:Tdef):Tprocdef;
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{Looks for macro s (must be given in upper case) in the macrosymbolstack, }
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{and returns it if found. Returns nil otherwise.}
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function search_macro(const s : string):tsym;
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{*** Object Helpers ***}
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procedure search_class_overloads(aprocsym : tprocsym);
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function search_default_property(pd : tobjectdef) : tpropertysym;
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{*** Macro Helpers ***}
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{If called initially, the following procedures manipulate macros in }
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{initialmacrotable, otherwise they manipulate system macros local to a module.}
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{Name can be given in any case (it will be converted to upper case).}
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procedure def_system_macro(const name : string);
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procedure set_system_macro(const name, value : string);
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procedure set_system_compvar(const name, value : string);
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procedure undef_system_macro(const name : string);
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{*** symtable stack ***}
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{ $ifdef DEBUG
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procedure test_symtablestack;
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procedure list_symtablestack;
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$endif DEBUG}
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{$ifdef UNITALIASES}
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type
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punit_alias = ^tunit_alias;
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tunit_alias = object(TNamedIndexItem)
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newname : pshortstring;
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constructor init(const n:string);
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destructor done;virtual;
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end;
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var
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unitaliases : pdictionary;
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procedure addunitalias(const n:string);
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function getunitalias(const n:string):string;
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{$endif UNITALIASES}
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{*** Init / Done ***}
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procedure IniTSymtable;
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procedure DoneSymtable;
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const
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overloaded_names : array [NOTOKEN..last_overloaded] of string[16] =
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('error',
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'plus','minus','star','slash','equal',
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'greater','lower','greater_or_equal',
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'lower_or_equal',
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'sym_diff','starstar',
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'as','is','in','or',
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'and','div','mod','not','shl','shr','xor',
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'assign');
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implementation
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uses
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{ global }
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verbose,globals,
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{ target }
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systems,
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{ symtable }
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symutil,defcmp,defutil,
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{ module }
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fmodule,
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{ codegen }
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procinfo
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;
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var
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dupnr : longint; { unique number for duplicate symbols }
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{*****************************************************************************
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TStoredSymtable
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*****************************************************************************}
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procedure tstoredsymtable.ppuload(ppufile:tcompilerppufile);
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begin
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{ load definitions }
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loaddefs(ppufile);
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{ load symbols }
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loadsyms(ppufile);
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end;
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procedure tstoredsymtable.ppuwrite(ppufile:tcompilerppufile);
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begin
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{ write definitions }
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writedefs(ppufile);
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{ write symbols }
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writesyms(ppufile);
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end;
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procedure tstoredsymtable.loaddefs(ppufile:tcompilerppufile);
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var
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def : tdef;
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b : byte;
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begin
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{ load start of definition section, which holds the amount of defs }
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if ppufile.readentry<>ibstartdefs then
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Message(unit_f_ppu_read_error);
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{ read definitions }
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repeat
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b:=ppufile.readentry;
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case b of
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ibpointerdef : def:=tpointerdef.ppuload(ppufile);
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ibarraydef : def:=tarraydef.ppuload(ppufile);
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iborddef : def:=torddef.ppuload(ppufile);
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ibfloatdef : def:=tfloatdef.ppuload(ppufile);
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ibprocdef : def:=tprocdef.ppuload(ppufile);
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ibshortstringdef : def:=tstringdef.loadshort(ppufile);
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iblongstringdef : def:=tstringdef.loadlong(ppufile);
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ibansistringdef : def:=tstringdef.loadansi(ppufile);
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ibwidestringdef : def:=tstringdef.loadwide(ppufile);
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ibrecorddef : def:=trecorddef.ppuload(ppufile);
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ibobjectdef : def:=tobjectdef.ppuload(ppufile);
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ibenumdef : def:=tenumdef.ppuload(ppufile);
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ibsetdef : def:=tsetdef.ppuload(ppufile);
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ibprocvardef : def:=tprocvardef.ppuload(ppufile);
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ibfiledef : def:=tfiledef.ppuload(ppufile);
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ibclassrefdef : def:=tclassrefdef.ppuload(ppufile);
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ibformaldef : def:=tformaldef.ppuload(ppufile);
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ibvariantdef : def:=tvariantdef.ppuload(ppufile);
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ibundefineddef : def:=tundefineddef.ppuload(ppufile);
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ibenddefs : break;
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ibend : Message(unit_f_ppu_read_error);
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else
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Message1(unit_f_ppu_invalid_entry,tostr(b));
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end;
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InsertDef(def);
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until false;
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end;
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procedure tstoredsymtable.loadsyms(ppufile:tcompilerppufile);
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var
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b : byte;
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sym : tsym;
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begin
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{ load start of definition section, which holds the amount of defs }
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if ppufile.readentry<>ibstartsyms then
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Message(unit_f_ppu_read_error);
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{ now read the symbols }
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repeat
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b:=ppufile.readentry;
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case b of
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ibtypesym : sym:=ttypesym.ppuload(ppufile);
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ibprocsym : sym:=tprocsym.ppuload(ppufile);
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ibconstsym : sym:=tconstsym.ppuload(ppufile);
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ibstaticvarsym : sym:=tstaticvarsym.ppuload(ppufile);
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iblocalvarsym : sym:=tlocalvarsym.ppuload(ppufile);
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ibparavarsym : sym:=tparavarsym.ppuload(ppufile);
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ibfieldvarsym : sym:=tfieldvarsym.ppuload(ppufile);
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ibabsolutevarsym : sym:=tabsolutevarsym.ppuload(ppufile);
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ibenumsym : sym:=tenumsym.ppuload(ppufile);
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ibpropertysym : sym:=tpropertysym.ppuload(ppufile);
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ibunitsym : sym:=tunitsym.ppuload(ppufile);
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iblabelsym : sym:=tlabelsym.ppuload(ppufile);
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ibsyssym : sym:=tsyssym.ppuload(ppufile);
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ibmacrosym : sym:=tmacro.ppuload(ppufile);
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ibendsyms : break;
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ibend : Message(unit_f_ppu_read_error);
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else
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Message1(unit_f_ppu_invalid_entry,tostr(b));
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end;
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Insert(sym,false);
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until false;
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end;
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procedure tstoredsymtable.writedefs(ppufile:tcompilerppufile);
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var
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i : longint;
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def : tstoreddef;
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begin
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{ each definition get a number, write then the amount of defs to the
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ibstartdef entry }
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ppufile.putlongint(DefList.count);
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ppufile.writeentry(ibstartdefs);
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{ now write the definition }
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for i:=0 to DefList.Count-1 do
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begin
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def:=tstoreddef(DefList[i]);
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def.ppuwrite(ppufile);
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end;
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{ write end of definitions }
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ppufile.writeentry(ibenddefs);
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end;
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procedure tstoredsymtable.writesyms(ppufile:tcompilerppufile);
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var
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i : longint;
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sym : Tstoredsym;
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begin
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{ each definition get a number, write then the amount of syms and the
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datasize to the ibsymdef entry }
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ppufile.putlongint(SymList.count);
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ppufile.writeentry(ibstartsyms);
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{ foreach is used to write all symbols }
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for i:=0 to SymList.Count-1 do
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begin
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sym:=tstoredsym(SymList[i]);
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sym.ppuwrite(ppufile);
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end;
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{ end of symbols }
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ppufile.writeentry(ibendsyms);
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end;
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procedure tstoredsymtable.buildderef;
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var
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i : longint;
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def : tstoreddef;
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sym : tstoredsym;
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begin
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{ interface definitions }
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for i:=0 to DefList.Count-1 do
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begin
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def:=tstoreddef(DefList[i]);
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def.buildderef;
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end;
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{ interface symbols }
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for i:=0 to SymList.Count-1 do
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begin
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sym:=tstoredsym(SymList[i]);
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sym.buildderef;
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end;
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end;
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procedure tstoredsymtable.buildderefimpl;
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var
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i : longint;
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def : tstoreddef;
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begin
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{ implementation definitions }
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for i:=0 to DefList.Count-1 do
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begin
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def:=tstoreddef(DefList[i]);
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def.buildderefimpl;
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end;
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end;
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|
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procedure tstoredsymtable.deref;
|
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var
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i : longint;
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def : tstoreddef;
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sym : tstoredsym;
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begin
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{ first deref the interface ttype symbols. This is needs
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to be done before the interface defs are derefed, because
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the interface defs can contain references to the type symbols
|
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which then already need to contain a resolved typedef field (PFV) }
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for i:=0 to SymList.Count-1 do
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begin
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sym:=tstoredsym(SymList[i]);
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if sym.typ=typesym then
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sym.deref;
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end;
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{ interface definitions }
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for i:=0 to DefList.Count-1 do
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begin
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def:=tstoreddef(DefList[i]);
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def.deref;
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end;
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{ interface symbols }
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for i:=0 to SymList.Count-1 do
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begin
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sym:=tstoredsym(SymList[i]);
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if sym.typ<>typesym then
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sym.deref;
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end;
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end;
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|
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|
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procedure tstoredsymtable.derefimpl;
|
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var
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i : longint;
|
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def : tstoreddef;
|
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begin
|
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{ implementation definitions }
|
|
for i:=0 to DefList.Count-1 do
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begin
|
|
def:=tstoreddef(DefList[i]);
|
|
def.derefimpl;
|
|
end;
|
|
end;
|
|
|
|
|
|
function tstoredsymtable.checkduplicate(var hashedid:THashedIDString;sym:TSymEntry):boolean;
|
|
var
|
|
hsym : tsym;
|
|
begin
|
|
hsym:=tsym(FindWithHash(hashedid));
|
|
if assigned(hsym) then
|
|
DuplicateSym(hashedid,sym,hsym);
|
|
result:=assigned(hsym);
|
|
end;
|
|
|
|
|
|
{**************************************
|
|
Callbacks
|
|
**************************************}
|
|
|
|
procedure TStoredSymtable.check_forward(sym:TObject;arg:pointer);
|
|
begin
|
|
if tsym(sym).typ=procsym then
|
|
tprocsym(sym).check_forward
|
|
{ check also object method table }
|
|
{ we needn't to test the def list }
|
|
{ because each object has to have a type sym,
|
|
only test objects declarations, not type renamings }
|
|
else
|
|
if (tsym(sym).typ=typesym) and
|
|
assigned(ttypesym(sym).typedef) and
|
|
(ttypesym(sym).typedef.typesym=ttypesym(sym)) and
|
|
(ttypesym(sym).typedef.typ=objectdef) then
|
|
tobjectdef(ttypesym(sym).typedef).check_forwards;
|
|
end;
|
|
|
|
|
|
procedure TStoredSymtable.labeldefined(sym:TObject;arg:pointer);
|
|
begin
|
|
if (tsym(sym).typ=labelsym) and
|
|
not(tlabelsym(sym).defined) then
|
|
begin
|
|
if tlabelsym(sym).used then
|
|
Message1(sym_e_label_used_and_not_defined,tlabelsym(sym).realname)
|
|
else
|
|
Message1(sym_w_label_not_defined,tlabelsym(sym).realname);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TStoredSymtable.varsymbolused(sym:TObject;arg:pointer);
|
|
begin
|
|
if (tsym(sym).typ in [staticvarsym,localvarsym,paravarsym,fieldvarsym]) and
|
|
((tsym(sym).owner.symtabletype in
|
|
[parasymtable,localsymtable,ObjectSymtable,staticsymtable])) then
|
|
begin
|
|
{ unused symbol should be reported only if no }
|
|
{ error is reported }
|
|
{ if the symbol is in a register it is used }
|
|
{ also don't count the value parameters which have local copies }
|
|
{ also don't claim for high param of open parameters (PM) }
|
|
if (Errorcount<>0) or
|
|
([vo_is_hidden_para,vo_is_funcret] * tabstractvarsym(sym).varoptions = [vo_is_hidden_para]) then
|
|
exit;
|
|
if (tstoredsym(sym).refs=0) then
|
|
begin
|
|
if (vo_is_funcret in tabstractvarsym(sym).varoptions) then
|
|
begin
|
|
{ don't warn about the result of constructors }
|
|
if ((tsym(sym).owner.symtabletype<>localsymtable) or
|
|
(tprocdef(tsym(sym).owner.defowner).proctypeoption<>potype_constructor)) and
|
|
not(cs_opt_nodedfa in current_settings.optimizerswitches) then
|
|
MessagePos(tsym(sym).fileinfo,sym_w_function_result_not_set)
|
|
end
|
|
else if (tsym(sym).owner.symtabletype=parasymtable) then
|
|
MessagePos1(tsym(sym).fileinfo,sym_h_para_identifier_not_used,tsym(sym).realname)
|
|
else if (tsym(sym).owner.symtabletype=ObjectSymtable) then
|
|
MessagePos2(tsym(sym).fileinfo,sym_n_private_identifier_not_used,tsym(sym).owner.realname^,tsym(sym).realname)
|
|
else
|
|
MessagePos1(tsym(sym).fileinfo,sym_n_local_identifier_not_used,tsym(sym).realname);
|
|
end
|
|
else if tabstractvarsym(sym).varstate in [vs_written,vs_initialised] then
|
|
begin
|
|
if (tsym(sym).owner.symtabletype=parasymtable) then
|
|
begin
|
|
if not(tabstractvarsym(sym).varspez in [vs_var,vs_out]) and
|
|
not(vo_is_funcret in tabstractvarsym(sym).varoptions) then
|
|
MessagePos1(tsym(sym).fileinfo,sym_h_para_identifier_only_set,tsym(sym).realname)
|
|
end
|
|
else if (tsym(sym).owner.symtabletype=ObjectSymtable) then
|
|
MessagePos2(tsym(sym).fileinfo,sym_n_private_identifier_only_set,tsym(sym).owner.realname^,tsym(sym).realname)
|
|
else if not(vo_is_public in tabstractvarsym(sym).varoptions) and
|
|
not(vo_is_funcret in tabstractvarsym(sym).varoptions) then
|
|
MessagePos1(tsym(sym).fileinfo,sym_n_local_identifier_only_set,tsym(sym).realname);
|
|
end
|
|
else if (tabstractvarsym(sym).varstate = vs_read_not_warned) and
|
|
([vo_is_public,vo_is_external] * tabstractvarsym(sym).varoptions = []) then
|
|
MessagePos1(tsym(sym).fileinfo,sym_w_identifier_only_read,tsym(sym).realname)
|
|
end
|
|
else if ((tsym(sym).owner.symtabletype in
|
|
[ObjectSymtable,parasymtable,localsymtable,staticsymtable])) then
|
|
begin
|
|
if (Errorcount<>0) or
|
|
(sp_internal in tsym(sym).symoptions) then
|
|
exit;
|
|
{ do not claim for inherited private fields !! }
|
|
if (Tsym(sym).refs=0) and (tsym(sym).owner.symtabletype=ObjectSymtable) then
|
|
MessagePos2(tsym(sym).fileinfo,sym_n_private_method_not_used,tsym(sym).owner.realname^,tsym(sym).realname)
|
|
{ units references are problematic }
|
|
else
|
|
begin
|
|
if (Tsym(sym).refs=0) and
|
|
not(tsym(sym).typ in [enumsym,unitsym]) and
|
|
not(is_funcret_sym(tsym(sym))) and
|
|
(
|
|
(tsym(sym).typ<>procsym) or
|
|
((tsym(sym).owner.symtabletype=staticsymtable) and
|
|
not current_module.is_unit)
|
|
) then
|
|
MessagePos2(tsym(sym).fileinfo,sym_h_local_symbol_not_used,SymTypeName[tsym(sym).typ],tsym(sym).realname);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TStoredSymtable.TestPrivate(sym:TObject;arg:pointer);
|
|
begin
|
|
if sp_private in tsym(sym).symoptions then
|
|
varsymbolused(sym,arg);
|
|
end;
|
|
|
|
|
|
procedure TStoredSymtable.objectprivatesymbolused(sym:TObject;arg:pointer);
|
|
begin
|
|
{
|
|
Don't test simple object aliases PM
|
|
}
|
|
if (tsym(sym).typ=typesym) and
|
|
(ttypesym(sym).typedef.typ=objectdef) and
|
|
(ttypesym(sym).typedef.typesym=tsym(sym)) then
|
|
tobjectdef(ttypesym(sym).typedef).symtable.SymList.ForEachCall(@TestPrivate,nil);
|
|
end;
|
|
|
|
|
|
procedure tstoredsymtable.unchain_overloads(sym:TObject;arg:pointer);
|
|
begin
|
|
if tsym(sym).typ=procsym then
|
|
tprocsym(sym).unchain_overload;
|
|
end;
|
|
|
|
|
|
{***********************************************
|
|
Process all entries
|
|
***********************************************}
|
|
|
|
procedure Tstoredsymtable.reset_all_defs;
|
|
var
|
|
i : longint;
|
|
def : tstoreddef;
|
|
begin
|
|
for i:=0 to DefList.Count-1 do
|
|
begin
|
|
def:=tstoreddef(DefList[i]);
|
|
def.reset;
|
|
end;
|
|
end;
|
|
|
|
|
|
{ checks, if all procsyms and methods are defined }
|
|
procedure tstoredsymtable.check_forwards;
|
|
begin
|
|
SymList.ForEachCall(@check_forward,nil);
|
|
end;
|
|
|
|
|
|
procedure tstoredsymtable.checklabels;
|
|
begin
|
|
SymList.ForEachCall(@labeldefined,nil);
|
|
end;
|
|
|
|
|
|
procedure tstoredsymtable.allsymbolsused;
|
|
begin
|
|
SymList.ForEachCall(@varsymbolused,nil);
|
|
end;
|
|
|
|
|
|
procedure tstoredsymtable.allprivatesused;
|
|
begin
|
|
SymList.ForEachCall(@objectprivatesymbolused,nil);
|
|
end;
|
|
|
|
|
|
procedure tstoredsymtable.unchain_overloaded;
|
|
begin
|
|
SymList.ForEachCall(@unchain_overloads,nil);
|
|
end;
|
|
|
|
|
|
procedure TStoredSymtable._needs_init_final(sym:TObject;arg:pointer);
|
|
begin
|
|
if b_needs_init_final then
|
|
exit;
|
|
case tsym(sym).typ of
|
|
fieldvarsym,
|
|
staticvarsym,
|
|
localvarsym,
|
|
paravarsym :
|
|
begin
|
|
if not(is_class(tabstractvarsym(sym).vardef)) and
|
|
tstoreddef(tabstractvarsym(sym).vardef).needs_inittable then
|
|
b_needs_init_final:=true;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
{ returns true, if p contains data which needs init/final code }
|
|
function tstoredsymtable.needs_init_final : boolean;
|
|
begin
|
|
b_needs_init_final:=false;
|
|
SymList.ForEachCall(@_needs_init_final,nil);
|
|
needs_init_final:=b_needs_init_final;
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
TAbstractRecordSymtable
|
|
****************************************************************************}
|
|
|
|
constructor tabstractrecordsymtable.create(const n:string;usealign:shortint);
|
|
begin
|
|
inherited create(n);
|
|
_datasize:=0;
|
|
databitsize:=0;
|
|
recordalignment:=1;
|
|
usefieldalignment:=usealign;
|
|
padalignment:=1;
|
|
{ recordalign C_alignment means C record packing, that starts
|
|
with an alignment of 1 }
|
|
case usealign of
|
|
C_alignment,
|
|
bit_alignment:
|
|
fieldalignment:=1
|
|
else
|
|
fieldalignment:=usealign;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tabstractrecordsymtable.ppuload(ppufile:tcompilerppufile);
|
|
begin
|
|
inherited ppuload(ppufile);
|
|
end;
|
|
|
|
|
|
procedure tabstractrecordsymtable.ppuwrite(ppufile:tcompilerppufile);
|
|
var
|
|
oldtyp : byte;
|
|
begin
|
|
oldtyp:=ppufile.entrytyp;
|
|
ppufile.entrytyp:=subentryid;
|
|
|
|
inherited ppuwrite(ppufile);
|
|
|
|
ppufile.entrytyp:=oldtyp;
|
|
end;
|
|
|
|
|
|
function field2recordalignment(fieldoffs, fieldalign: aint): aint;
|
|
begin
|
|
{ optimal alignment of the record when declaring a variable of this }
|
|
{ type is independent of the packrecords setting }
|
|
if (fieldoffs mod fieldalign) = 0 then
|
|
result:=fieldalign
|
|
else if (fieldalign >= 16) and
|
|
((fieldoffs mod 16) = 0) and
|
|
((fieldalign mod 16) = 0) then
|
|
result:=16
|
|
else if (fieldalign >= 8) and
|
|
((fieldoffs mod 8) = 0) and
|
|
((fieldalign mod 8) = 0) then
|
|
result:=8
|
|
else if (fieldalign >= 4) and
|
|
((fieldoffs mod 4) = 0) and
|
|
((fieldalign mod 4) = 0) then
|
|
result:=4
|
|
else if (fieldalign >= 2) and
|
|
((fieldoffs mod 2) = 0) and
|
|
((fieldalign mod 2) = 0) then
|
|
result:=2
|
|
else
|
|
result:=1;
|
|
end;
|
|
|
|
|
|
procedure tabstractrecordsymtable.addfield(sym:tfieldvarsym);
|
|
var
|
|
l : aint;
|
|
varalignrecord,
|
|
varalignfield,
|
|
varalign : shortint;
|
|
vardef : tdef;
|
|
begin
|
|
if (sym.owner<>self) then
|
|
internalerror(200602031);
|
|
if sym.fieldoffset<>-1 then
|
|
internalerror(200602032);
|
|
{ this symbol can't be loaded to a register }
|
|
sym.varregable:=vr_none;
|
|
{ Calculate field offset }
|
|
l:=sym.getsize;
|
|
vardef:=sym.vardef;
|
|
varalign:=vardef.alignment;
|
|
|
|
if (usefieldalignment=bit_alignment) then
|
|
begin
|
|
{ bitpacking only happens for ordinals, the rest is aligned at }
|
|
{ 1 byte (compatible with GPC/GCC) }
|
|
if is_ordinal(vardef) then
|
|
begin
|
|
sym.fieldoffset:=databitsize;
|
|
l:=sym.getpackedbitsize;
|
|
end
|
|
else
|
|
begin
|
|
databitsize:=_datasize*8;
|
|
sym.fieldoffset:=databitsize;
|
|
if (l>high(aint) div 8) then
|
|
Message(sym_e_segment_too_large);
|
|
l:=l*8;
|
|
end;
|
|
if varalign=0 then
|
|
varalign:=size_2_align(l);
|
|
recordalignment:=max(recordalignment,field2recordalignment(databitsize mod 8,varalign));
|
|
{ bit packed records are limited to high(aint) bits }
|
|
{ instead of bytes to avoid double precision }
|
|
{ arithmetic in offset calculations }
|
|
if int64(l)>high(aint)-sym.fieldoffset then
|
|
begin
|
|
Message(sym_e_segment_too_large);
|
|
_datasize:=high(aint);
|
|
databitsize:=high(aint);
|
|
end
|
|
else
|
|
begin
|
|
databitsize:=sym.fieldoffset+l;
|
|
_datasize:=(databitsize+7) div 8;
|
|
end;
|
|
{ rest is not applicable }
|
|
exit;
|
|
end;
|
|
{ Calc the alignment size for C style records }
|
|
if (usefieldalignment=C_alignment) then
|
|
begin
|
|
if (varalign>4) and
|
|
((varalign mod 4)<>0) and
|
|
(vardef.typ=arraydef) then
|
|
Message1(sym_w_wrong_C_pack,vardef.typename);
|
|
if varalign=0 then
|
|
varalign:=l;
|
|
if (fieldalignment<current_settings.alignment.maxCrecordalign) then
|
|
begin
|
|
if (varalign>16) and (fieldalignment<32) then
|
|
fieldalignment:=32
|
|
else if (varalign>12) and (fieldalignment<16) then
|
|
fieldalignment:=16
|
|
{ 12 is needed for long double }
|
|
else if (varalign>8) and (fieldalignment<12) then
|
|
fieldalignment:=12
|
|
else if (varalign>4) and (fieldalignment<8) then
|
|
fieldalignment:=8
|
|
else if (varalign>2) and (fieldalignment<4) then
|
|
fieldalignment:=4
|
|
else if (varalign>1) and (fieldalignment<2) then
|
|
fieldalignment:=2;
|
|
end;
|
|
fieldalignment:=min(fieldalignment,current_settings.alignment.maxCrecordalign);
|
|
end;
|
|
if varalign=0 then
|
|
varalign:=size_2_align(l);
|
|
varalignfield:=used_align(varalign,current_settings.alignment.recordalignmin,fieldalignment);
|
|
|
|
sym.fieldoffset:=align(_datasize,varalignfield);
|
|
if l>high(aint)-sym.fieldoffset then
|
|
begin
|
|
Message(sym_e_segment_too_large);
|
|
_datasize:=high(aint);
|
|
end
|
|
else
|
|
_datasize:=sym.fieldoffset+l;
|
|
{ Calc alignment needed for this record }
|
|
if (usefieldalignment=C_alignment) then
|
|
varalignrecord:=used_align(varalign,current_settings.alignment.recordalignmin,current_settings.alignment.maxCrecordalign)
|
|
else
|
|
varalignrecord:=field2recordalignment(sym.fieldoffset,varalign);
|
|
recordalignment:=max(recordalignment,varalignrecord);
|
|
end;
|
|
|
|
|
|
procedure tabstractrecordsymtable.insertfield(sym:tfieldvarsym);
|
|
begin
|
|
insert(sym);
|
|
addfield(sym);
|
|
end;
|
|
|
|
|
|
procedure tabstractrecordsymtable.addalignmentpadding;
|
|
begin
|
|
{ make the record size aligned correctly so it can be
|
|
used as elements in an array. For C records we
|
|
use the fieldalignment, because that is updated with the
|
|
used alignment. }
|
|
if (padalignment = 1) then
|
|
case usefieldalignment of
|
|
C_alignment:
|
|
padalignment:=fieldalignment;
|
|
{ bitpacked }
|
|
bit_alignment:
|
|
padalignment:=1;
|
|
{ default/no packrecords specified }
|
|
0:
|
|
padalignment:=recordalignment
|
|
{ specific packrecords setting -> use as upper limit }
|
|
else
|
|
padalignment:=min(recordalignment,usefieldalignment);
|
|
end;
|
|
_datasize:=align(_datasize,padalignment);
|
|
end;
|
|
|
|
|
|
procedure tabstractrecordsymtable.insertdef(def:TDefEntry);
|
|
begin
|
|
{ Enums must also be available outside the record scope,
|
|
insert in the owner of this symtable }
|
|
if def.typ=enumdef then
|
|
defowner.owner.insertdef(def)
|
|
else
|
|
inherited insertdef(def);
|
|
end;
|
|
|
|
|
|
function tabstractrecordsymtable.is_packed: boolean;
|
|
begin
|
|
result:=usefieldalignment=bit_alignment;
|
|
end;
|
|
|
|
|
|
procedure tabstractrecordsymtable.setdatasize(val: aint);
|
|
begin
|
|
_datasize:=val;
|
|
if (usefieldalignment=bit_alignment) then
|
|
{ can overflow in non bitpacked records }
|
|
databitsize:=val*8;
|
|
end;
|
|
|
|
{****************************************************************************
|
|
TRecordSymtable
|
|
****************************************************************************}
|
|
|
|
constructor trecordsymtable.create(usealign:shortint);
|
|
begin
|
|
inherited create('',usealign);
|
|
symtabletype:=recordsymtable;
|
|
end;
|
|
|
|
|
|
{ this procedure is reserved for inserting case variant into
|
|
a record symtable }
|
|
{ the offset is the location of the start of the variant
|
|
and datasize and dataalignment corresponds to
|
|
the complete size (see code in pdecl unit) PM }
|
|
procedure trecordsymtable.insertunionst(unionst : trecordsymtable;offset : longint);
|
|
var
|
|
sym : tsym;
|
|
def : tdef;
|
|
i : integer;
|
|
varalignrecord,varalign,
|
|
storesize,storealign : aint;
|
|
bitsize: aint;
|
|
begin
|
|
storesize:=_datasize;
|
|
storealign:=fieldalignment;
|
|
_datasize:=offset;
|
|
if (usefieldalignment=bit_alignment) then
|
|
databitsize:=offset*8;
|
|
|
|
{ We move the ownership of the defs and symbols to the new recordsymtable.
|
|
The old unionsymtable keeps the references, but doesn't own the
|
|
objects anymore }
|
|
unionst.DefList.OwnsObjects:=false;
|
|
unionst.SymList.OwnsObjects:=false;
|
|
|
|
{ copy symbols }
|
|
for i:=0 to unionst.SymList.Count-1 do
|
|
begin
|
|
sym:=TSym(unionst.SymList[i]);
|
|
if sym.typ<>fieldvarsym then
|
|
internalerror(200601272);
|
|
{ add to this record symtable }
|
|
// unionst.SymList.List.List^[i].Data:=nil;
|
|
sym.ChangeOwner(self);
|
|
varalign:=tfieldvarsym(sym).vardef.alignment;
|
|
if varalign=0 then
|
|
varalign:=size_2_align(tfieldvarsym(sym).getsize);
|
|
{ retrieve size }
|
|
if (usefieldalignment=bit_alignment) then
|
|
begin
|
|
{ bit packed records are limited to high(aint) bits }
|
|
{ instead of bytes to avoid double precision }
|
|
{ arithmetic in offset calculations }
|
|
if is_ordinal(tfieldvarsym(sym).vardef) then
|
|
bitsize:=tfieldvarsym(sym).getpackedbitsize
|
|
else
|
|
begin
|
|
bitsize:=tfieldvarsym(sym).getsize;
|
|
if (bitsize>high(aint) div 8) then
|
|
Message(sym_e_segment_too_large);
|
|
bitsize:=bitsize*8;
|
|
end;
|
|
if bitsize>high(aint)-databitsize then
|
|
begin
|
|
Message(sym_e_segment_too_large);
|
|
_datasize:=high(aint);
|
|
databitsize:=high(aint);
|
|
end
|
|
else
|
|
begin
|
|
databitsize:=tfieldvarsym(sym).fieldoffset+offset*8;
|
|
_datasize:=(databitsize+7) div 8;
|
|
end;
|
|
tfieldvarsym(sym).fieldoffset:=databitsize;
|
|
varalignrecord:=field2recordalignment(tfieldvarsym(sym).fieldoffset div 8,varalign);
|
|
end
|
|
else
|
|
begin
|
|
if tfieldvarsym(sym).getsize>high(aint)-_datasize then
|
|
begin
|
|
Message(sym_e_segment_too_large);
|
|
_datasize:=high(aint);
|
|
end
|
|
else
|
|
_datasize:=tfieldvarsym(sym).fieldoffset+offset;
|
|
{ update address }
|
|
tfieldvarsym(sym).fieldoffset:=_datasize;
|
|
varalignrecord:=field2recordalignment(tfieldvarsym(sym).fieldoffset,varalign);
|
|
end;
|
|
{ update alignment of this record }
|
|
if (usefieldalignment<>C_alignment) then
|
|
recordalignment:=max(recordalignment,varalignrecord);
|
|
end;
|
|
{ update alignment for C records }
|
|
if (usefieldalignment=C_alignment) then
|
|
recordalignment:=max(recordalignment,unionst.recordalignment);
|
|
{ Register defs in the new record symtable }
|
|
for i:=0 to unionst.DefList.Count-1 do
|
|
begin
|
|
def:=TDef(unionst.DefList[i]);
|
|
def.ChangeOwner(self);
|
|
end;
|
|
_datasize:=storesize;
|
|
fieldalignment:=storealign;
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
TObjectSymtable
|
|
****************************************************************************}
|
|
|
|
constructor tObjectSymtable.create(adefowner:tdef;const n:string;usealign:shortint);
|
|
begin
|
|
inherited create(n,usealign);
|
|
symtabletype:=ObjectSymtable;
|
|
defowner:=adefowner;
|
|
end;
|
|
|
|
|
|
function tObjectSymtable.checkduplicate(var hashedid:THashedIDString;sym:TSymEntry):boolean;
|
|
var
|
|
hsym : tsym;
|
|
begin
|
|
result:=false;
|
|
if not assigned(defowner) then
|
|
internalerror(200602061);
|
|
|
|
{ procsym and propertysym have special code
|
|
to override values in inherited classes. For other
|
|
symbols check for duplicates }
|
|
if not(sym.typ in [procsym,propertysym]) and
|
|
(
|
|
not(m_delphi in current_settings.modeswitches) or
|
|
is_object(tdef(defowner))
|
|
) then
|
|
begin
|
|
{ but private ids can be reused }
|
|
hsym:=search_class_member(tobjectdef(defowner),hashedid.id);
|
|
if assigned(hsym) and
|
|
tsym(hsym).is_visible_for_object(tobjectdef(defowner),tobjectdef(defowner)) then
|
|
begin
|
|
DuplicateSym(hashedid,sym,hsym);
|
|
result:=true;
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
if not(m_duplicate_names in current_settings.modeswitches) then
|
|
result:=inherited checkduplicate(hashedid,sym);
|
|
end;
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
TAbstractLocalSymtable
|
|
****************************************************************************}
|
|
|
|
procedure tabstractlocalsymtable.ppuwrite(ppufile:tcompilerppufile);
|
|
var
|
|
oldtyp : byte;
|
|
begin
|
|
oldtyp:=ppufile.entrytyp;
|
|
ppufile.entrytyp:=subentryid;
|
|
|
|
{ write definitions }
|
|
writedefs(ppufile);
|
|
{ write symbols }
|
|
writesyms(ppufile);
|
|
|
|
ppufile.entrytyp:=oldtyp;
|
|
end;
|
|
|
|
|
|
function tabstractlocalsymtable.count_locals:longint;
|
|
var
|
|
i : longint;
|
|
sym : tsym;
|
|
begin
|
|
result:=0;
|
|
for i:=0 to SymList.Count-1 do
|
|
begin
|
|
sym:=tsym(SymList[i]);
|
|
{ Count only varsyms, but ignore the funcretsym }
|
|
if (tsym(sym).typ in [localvarsym,paravarsym]) and
|
|
(tsym(sym)<>current_procinfo.procdef.funcretsym) and
|
|
(not(vo_is_parentfp in tabstractvarsym(sym).varoptions) or
|
|
(tstoredsym(sym).refs>0)) then
|
|
inc(result);
|
|
end;
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
TLocalSymtable
|
|
****************************************************************************}
|
|
|
|
constructor tlocalsymtable.create(adefowner:tdef;level:byte);
|
|
begin
|
|
inherited create('');
|
|
defowner:=adefowner;
|
|
symtabletype:=localsymtable;
|
|
symtablelevel:=level;
|
|
end;
|
|
|
|
|
|
function tlocalsymtable.checkduplicate(var hashedid:THashedIDString;sym:TSymEntry):boolean;
|
|
var
|
|
hsym : tsym;
|
|
begin
|
|
if not assigned(defowner) or
|
|
(defowner.typ<>procdef) then
|
|
internalerror(200602042);
|
|
|
|
result:=false;
|
|
hsym:=tsym(FindWithHash(hashedid));
|
|
if assigned(hsym) then
|
|
begin
|
|
{ a local and the function can have the same
|
|
name in TP and Delphi, but RESULT not }
|
|
if (m_duplicate_names in current_settings.modeswitches) and
|
|
(hsym.typ in [absolutevarsym,localvarsym]) and
|
|
(vo_is_funcret in tabstractvarsym(hsym).varoptions) and
|
|
not((m_result in current_settings.modeswitches) and
|
|
(vo_is_result in tabstractvarsym(hsym).varoptions)) then
|
|
HideSym(hsym)
|
|
else
|
|
DuplicateSym(hashedid,sym,hsym);
|
|
result:=true;
|
|
exit;
|
|
end;
|
|
|
|
{ check also parasymtable, this needs to be done here becuase
|
|
of the special situation with the funcret sym that needs to be
|
|
hidden for tp and delphi modes }
|
|
hsym:=tsym(tabstractprocdef(defowner).parast.FindWithHash(hashedid));
|
|
if assigned(hsym) then
|
|
begin
|
|
{ a local and the function can have the same
|
|
name in TP and Delphi, but RESULT not }
|
|
if (m_duplicate_names in current_settings.modeswitches) and
|
|
(sym.typ in [absolutevarsym,localvarsym]) and
|
|
(vo_is_funcret in tabstractvarsym(sym).varoptions) and
|
|
not((m_result in current_settings.modeswitches) and
|
|
(vo_is_result in tabstractvarsym(sym).varoptions)) then
|
|
Hidesym(sym)
|
|
else
|
|
DuplicateSym(hashedid,sym,hsym);
|
|
result:=true;
|
|
exit;
|
|
end;
|
|
|
|
{ check ObjectSymtable, skip this for funcret sym because
|
|
that will always be positive because it has the same name
|
|
as the procsym }
|
|
if not is_funcret_sym(sym) and
|
|
(defowner.typ=procdef) and
|
|
assigned(tprocdef(defowner)._class) and
|
|
(tprocdef(defowner).owner.defowner=tprocdef(defowner)._class) then
|
|
result:=tprocdef(defowner)._class.symtable.checkduplicate(hashedid,sym);
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
TParaSymtable
|
|
****************************************************************************}
|
|
|
|
constructor tparasymtable.create(adefowner:tdef;level:byte);
|
|
begin
|
|
inherited create('');
|
|
defowner:=adefowner;
|
|
symtabletype:=parasymtable;
|
|
symtablelevel:=level;
|
|
end;
|
|
|
|
|
|
function tparasymtable.checkduplicate(var hashedid:THashedIDString;sym:TSymEntry):boolean;
|
|
begin
|
|
result:=inherited checkduplicate(hashedid,sym);
|
|
if result then
|
|
exit;
|
|
if not(m_duplicate_names in current_settings.modeswitches) and
|
|
(defowner.typ=procdef) and
|
|
assigned(tprocdef(defowner)._class) and
|
|
(tprocdef(defowner).owner.defowner=tprocdef(defowner)._class) then
|
|
result:=tprocdef(defowner)._class.symtable.checkduplicate(hashedid,sym);
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
TAbstractUniTSymtable
|
|
****************************************************************************}
|
|
|
|
constructor tabstractuniTSymtable.create(const n : string;id:word);
|
|
begin
|
|
inherited create(n);
|
|
moduleid:=id;
|
|
end;
|
|
|
|
|
|
function tabstractuniTSymtable.iscurrentunit:boolean;
|
|
begin
|
|
result:=assigned(current_module) and
|
|
(
|
|
(current_module.globalsymtable=self) or
|
|
(current_module.localsymtable=self)
|
|
);
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
TStaticSymtable
|
|
****************************************************************************}
|
|
|
|
constructor tstaticsymtable.create(const n : string;id:word);
|
|
begin
|
|
inherited create(n,id);
|
|
symtabletype:=staticsymtable;
|
|
symtablelevel:=main_program_level;
|
|
end;
|
|
|
|
|
|
procedure tstaticsymtable.ppuload(ppufile:tcompilerppufile);
|
|
begin
|
|
inherited ppuload(ppufile);
|
|
|
|
{ now we can deref the syms and defs }
|
|
deref;
|
|
end;
|
|
|
|
|
|
procedure tstaticsymtable.ppuwrite(ppufile:tcompilerppufile);
|
|
begin
|
|
inherited ppuwrite(ppufile);
|
|
end;
|
|
|
|
|
|
function tstaticsymtable.checkduplicate(var hashedid:THashedIDString;sym:TSymEntry):boolean;
|
|
var
|
|
hsym : tsym;
|
|
begin
|
|
result:=false;
|
|
hsym:=tsym(FindWithHash(hashedid));
|
|
if assigned(hsym) then
|
|
begin
|
|
{ Delphi (contrary to TP) you can have a symbol with the same name as the
|
|
unit, the unit can then not be accessed anymore using
|
|
<unit>.<id>, so we can hide the symbol }
|
|
if (m_delphi in current_settings.modeswitches) and
|
|
(hsym.typ=symconst.unitsym) then
|
|
HideSym(hsym)
|
|
else
|
|
DuplicateSym(hashedid,sym,hsym);
|
|
result:=true;
|
|
exit;
|
|
end;
|
|
|
|
if (current_module.localsymtable=self) and
|
|
assigned(current_module.globalsymtable) then
|
|
result:=tglobalsymtable(current_module.globalsymtable).checkduplicate(hashedid,sym);
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
TGlobalSymtable
|
|
****************************************************************************}
|
|
|
|
constructor tglobalsymtable.create(const n : string;id:word);
|
|
begin
|
|
inherited create(n,id);
|
|
symtabletype:=globalsymtable;
|
|
symtablelevel:=main_program_level;
|
|
end;
|
|
|
|
|
|
procedure tglobalsymtable.ppuload(ppufile:tcompilerppufile);
|
|
begin
|
|
inherited ppuload(ppufile);
|
|
|
|
{ now we can deref the syms and defs }
|
|
deref;
|
|
end;
|
|
|
|
|
|
procedure tglobalsymtable.ppuwrite(ppufile:tcompilerppufile);
|
|
begin
|
|
{ write the symtable entries }
|
|
inherited ppuwrite(ppufile);
|
|
end;
|
|
|
|
|
|
function tglobalsymtable.checkduplicate(var hashedid:THashedIDString;sym:TSymEntry):boolean;
|
|
var
|
|
hsym : tsym;
|
|
begin
|
|
result:=false;
|
|
hsym:=tsym(FindWithHash(hashedid));
|
|
if assigned(hsym) then
|
|
begin
|
|
{ Delphi (contrary to TP) you can have a symbol with the same name as the
|
|
unit, the unit can then not be accessed anymore using
|
|
<unit>.<id>, so we can hide the symbol }
|
|
if (m_delphi in current_settings.modeswitches) and
|
|
(hsym.typ=symconst.unitsym) then
|
|
HideSym(hsym)
|
|
else
|
|
DuplicateSym(hashedid,sym,hsym);
|
|
result:=true;
|
|
exit;
|
|
end;
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
TWITHSYMTABLE
|
|
****************************************************************************}
|
|
|
|
constructor twithsymtable.create(aowner:tdef;ASymList:TFPHashObjectList;refnode:tobject{tnode});
|
|
begin
|
|
inherited create('');
|
|
symtabletype:=withsymtable;
|
|
withrefnode:=refnode;
|
|
{ Replace SymList with the passed symlist }
|
|
SymList.free;
|
|
SymList:=ASymList;
|
|
defowner:=aowner;
|
|
end;
|
|
|
|
|
|
destructor twithsymtable.destroy;
|
|
begin
|
|
withrefnode.free;
|
|
{ Disable SymList because we don't Own it }
|
|
SymList:=nil;
|
|
inherited destroy;
|
|
end;
|
|
|
|
|
|
procedure twithsymtable.clear;
|
|
begin
|
|
{ remove no entry from a withsymtable as it is only a pointer to the
|
|
recorddef or objectdef symtable }
|
|
end;
|
|
|
|
|
|
procedure twithsymtable.insertdef(def:TDefEntry);
|
|
begin
|
|
{ Definitions can't be registered in the withsymtable
|
|
because the withsymtable is removed after the with block.
|
|
We can't easily solve it here because the next symtable in the
|
|
stack is not known. }
|
|
internalerror(200602046);
|
|
end;
|
|
|
|
{****************************************************************************
|
|
TSTT_ExceptionSymtable
|
|
****************************************************************************}
|
|
|
|
constructor tstt_excepTSymtable.create;
|
|
begin
|
|
inherited create('');
|
|
symtabletype:=stt_excepTSymtable;
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
TMacroSymtable
|
|
****************************************************************************}
|
|
|
|
constructor tmacrosymtable.create(exported: boolean);
|
|
begin
|
|
inherited create('');
|
|
if exported then
|
|
symtabletype:=exportedmacrosymtable
|
|
else
|
|
symtabletype:=localmacrosymtable;
|
|
symtablelevel:=main_program_level;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
Helper Routines
|
|
*****************************************************************************}
|
|
|
|
function FullTypeName(def,otherdef:tdef):string;
|
|
var
|
|
s1,s2 : string;
|
|
begin
|
|
s1:=def.typename;
|
|
{ When the names are the same try to include the unit name }
|
|
if assigned(otherdef) and
|
|
(def.owner.symtabletype in [globalsymtable,staticsymtable]) then
|
|
begin
|
|
s2:=otherdef.typename;
|
|
if upper(s1)=upper(s2) then
|
|
s1:=def.owner.realname^+'.'+s1;
|
|
end;
|
|
FullTypeName:=s1;
|
|
end;
|
|
|
|
|
|
procedure incompatibletypes(def1,def2:tdef);
|
|
begin
|
|
{ When there is an errordef there is already an error message show }
|
|
if (def2.typ=errordef) or
|
|
(def1.typ=errordef) then
|
|
exit;
|
|
CGMessage2(type_e_incompatible_types,FullTypeName(def1,def2),FullTypeName(def2,def1));
|
|
end;
|
|
|
|
|
|
procedure hidesym(sym:TSymEntry);
|
|
begin
|
|
sym.realname:='$hidden'+sym.realname;
|
|
include(tsym(sym).symoptions,sp_hidden);
|
|
end;
|
|
|
|
|
|
procedure duplicatesym(var hashedid:THashedIDString;dupsym,origsym:TSymEntry);
|
|
var
|
|
st : TSymtable;
|
|
begin
|
|
Message1(sym_e_duplicate_id,tsym(origsym).realname);
|
|
{ Write hint where the original symbol was found }
|
|
st:=finduniTSymtable(origsym.owner);
|
|
with tsym(origsym).fileinfo do
|
|
begin
|
|
if assigned(st) and
|
|
(st.symtabletype=globalsymtable) and
|
|
st.iscurrentunit then
|
|
Message2(sym_h_duplicate_id_where,current_module.sourcefiles.get_file_name(fileindex),tostr(line))
|
|
else if assigned(st.name) then
|
|
Message2(sym_h_duplicate_id_where,'unit '+st.name^,tostr(line));
|
|
end;
|
|
{ Rename duplicate sym to an unreachable name, but it can be
|
|
inserted in the symtable without errors }
|
|
inc(dupnr);
|
|
hashedid.id:='dup'+tostr(dupnr)+hashedid.id;
|
|
if assigned(dupsym) then
|
|
include(tsym(dupsym).symoptions,sp_implicitrename);
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
Search
|
|
*****************************************************************************}
|
|
|
|
procedure addsymref(sym:tsym);
|
|
begin
|
|
{ symbol uses count }
|
|
sym.IncRefCount;
|
|
{ unit uses count }
|
|
if assigned(current_module) and
|
|
(sym.owner.symtabletype=globalsymtable) then
|
|
begin
|
|
if tglobalsymtable(sym.owner).moduleid>=current_module.unitmapsize then
|
|
internalerror(200501152);
|
|
inc(current_module.unitmap[tglobalsymtable(sym.owner).moduleid].refs);
|
|
end;
|
|
end;
|
|
|
|
|
|
function searchsym(const s : TIDString;out srsym:tsym;out srsymtable:TSymtable):boolean;
|
|
var
|
|
hashedid : THashedIDString;
|
|
topclass : tobjectdef;
|
|
context : tobjectdef;
|
|
stackitem : psymtablestackitem;
|
|
begin
|
|
result:=false;
|
|
hashedid.id:=s;
|
|
stackitem:=symtablestack.stack;
|
|
while assigned(stackitem) do
|
|
begin
|
|
srsymtable:=stackitem^.symtable;
|
|
srsym:=tsym(srsymtable.FindWithHash(hashedid));
|
|
if assigned(srsym) then
|
|
begin
|
|
topclass:=nil;
|
|
{ use the class from withsymtable only when it is
|
|
defined in this unit }
|
|
if (srsymtable.symtabletype=withsymtable) and
|
|
assigned(srsymtable.defowner) and
|
|
(srsymtable.defowner.typ=objectdef) and
|
|
(srsymtable.defowner.owner.symtabletype in [globalsymtable,staticsymtable]) and
|
|
(srsymtable.defowner.owner.iscurrentunit) then
|
|
topclass:=tobjectdef(srsymtable.defowner)
|
|
else
|
|
begin
|
|
if assigned(current_procinfo) then
|
|
topclass:=current_procinfo.procdef._class;
|
|
end;
|
|
if assigned(current_procinfo) then
|
|
context:=current_procinfo.procdef._class
|
|
else
|
|
context:=nil;
|
|
if tsym(srsym).is_visible_for_object(topclass,context) then
|
|
begin
|
|
{ we need to know if a procedure references symbols
|
|
in the static symtable, because then it can't be
|
|
inlined from outside this unit }
|
|
if assigned(current_procinfo) and
|
|
(srsym.owner.symtabletype=staticsymtable) then
|
|
include(current_procinfo.flags,pi_uses_static_symtable);
|
|
addsymref(srsym);
|
|
result:=true;
|
|
exit;
|
|
end;
|
|
end;
|
|
stackitem:=stackitem^.next;
|
|
end;
|
|
srsym:=nil;
|
|
srsymtable:=nil;
|
|
end;
|
|
|
|
|
|
function searchsym_type(const s : TIDString;out srsym:tsym;out srsymtable:TSymtable):boolean;
|
|
var
|
|
hashedid : THashedIDString;
|
|
stackitem : psymtablestackitem;
|
|
begin
|
|
result:=false;
|
|
hashedid.id:=s;
|
|
stackitem:=symtablestack.stack;
|
|
while assigned(stackitem) do
|
|
begin
|
|
{
|
|
It is not possible to have type symbols in:
|
|
records
|
|
objects
|
|
parameters
|
|
Exception are generic definitions and specializations
|
|
that have the parameterized types inserted in the symtable.
|
|
}
|
|
srsymtable:=stackitem^.symtable;
|
|
if not(srsymtable.symtabletype in [recordsymtable,ObjectSymtable,parasymtable]) or
|
|
(assigned(srsymtable.defowner) and
|
|
(
|
|
(df_generic in tdef(srsymtable.defowner).defoptions) or
|
|
(df_specialization in tdef(srsymtable.defowner).defoptions))
|
|
) then
|
|
begin
|
|
srsym:=tsym(srsymtable.FindWithHash(hashedid));
|
|
if assigned(srsym) and
|
|
not(srsym.typ in [fieldvarsym,paravarsym]) and
|
|
(not assigned(current_procinfo) or
|
|
tsym(srsym).is_visible_for_object(current_procinfo.procdef._class,current_procinfo.procdef._class)) then
|
|
begin
|
|
{ we need to know if a procedure references symbols
|
|
in the static symtable, because then it can't be
|
|
inlined from outside this unit }
|
|
if assigned(current_procinfo) and
|
|
(srsym.owner.symtabletype=staticsymtable) then
|
|
include(current_procinfo.flags,pi_uses_static_symtable);
|
|
addsymref(srsym);
|
|
result:=true;
|
|
exit;
|
|
end;
|
|
end;
|
|
stackitem:=stackitem^.next;
|
|
end;
|
|
result:=false;
|
|
srsym:=nil;
|
|
srsymtable:=nil;
|
|
end;
|
|
|
|
|
|
function searchsym_in_module(pm:pointer;const s : TIDString;out srsym:tsym;out srsymtable:TSymtable):boolean;
|
|
var
|
|
pmod : tmodule;
|
|
begin
|
|
pmod:=tmodule(pm);
|
|
result:=false;
|
|
if assigned(pmod.globalsymtable) then
|
|
begin
|
|
srsym:=tsym(pmod.globalsymtable.Find(s));
|
|
if assigned(srsym) then
|
|
begin
|
|
srsymtable:=pmod.globalsymtable;
|
|
addsymref(srsym);
|
|
result:=true;
|
|
exit;
|
|
end;
|
|
end;
|
|
{ If the module is the current unit we also need
|
|
to search the local symtable }
|
|
if (pmod=current_module) and
|
|
assigned(pmod.localsymtable) then
|
|
begin
|
|
srsym:=tsym(pmod.localsymtable.Find(s));
|
|
if assigned(srsym) then
|
|
begin
|
|
srsymtable:=pmod.localsymtable;
|
|
addsymref(srsym);
|
|
result:=true;
|
|
exit;
|
|
end;
|
|
end;
|
|
srsym:=nil;
|
|
srsymtable:=nil;
|
|
end;
|
|
|
|
|
|
function searchsym_in_class(classh,contextclassh:tobjectdef;const s : TIDString;out srsym:tsym;out srsymtable:TSymtable):boolean;
|
|
var
|
|
hashedid : THashedIDString;
|
|
currentclassh : tobjectdef;
|
|
begin
|
|
result:=false;
|
|
hashedid.id:=s;
|
|
if assigned(current_procinfo.procdef) then
|
|
currentclassh:=current_procinfo.procdef._class
|
|
else
|
|
currentclassh:=nil;
|
|
while assigned(classh) do
|
|
begin
|
|
srsymtable:=classh.symtable;
|
|
srsym:=tsym(srsymtable.FindWithHash(hashedid));
|
|
if assigned(srsym) and
|
|
tsym(srsym).is_visible_for_object(contextclassh,currentclassh) then
|
|
begin
|
|
addsymref(srsym);
|
|
result:=true;
|
|
exit;
|
|
end;
|
|
classh:=classh.childof;
|
|
end;
|
|
srsym:=nil;
|
|
srsymtable:=nil;
|
|
end;
|
|
|
|
|
|
function searchsym_in_class_by_msgint(classh:tobjectdef;msgid:longint;out srdef : tdef;out srsym:tsym;out srsymtable:TSymtable):boolean;
|
|
var
|
|
def : tdef;
|
|
i : longint;
|
|
begin
|
|
result:=false;
|
|
def:=nil;
|
|
while assigned(classh) do
|
|
begin
|
|
for i:=0 to classh.symtable.DefList.Count-1 do
|
|
begin
|
|
def:=tstoreddef(classh.symtable.DefList[i]);
|
|
{ Find also all hidden private methods to
|
|
be compatible with delphi, see tw6203 (PFV) }
|
|
if (def.typ=procdef) and
|
|
(po_msgint in tprocdef(def).procoptions) and
|
|
(tprocdef(def).messageinf.i=msgid) then
|
|
begin
|
|
srdef:=def;
|
|
srsym:=tprocdef(def).procsym;
|
|
srsymtable:=classh.symtable;
|
|
addsymref(srsym);
|
|
result:=true;
|
|
exit;
|
|
end;
|
|
end;
|
|
classh:=classh.childof;
|
|
end;
|
|
srdef:=nil;
|
|
srsym:=nil;
|
|
srsymtable:=nil;
|
|
end;
|
|
|
|
|
|
function searchsym_in_class_by_msgstr(classh:tobjectdef;const s:string;out srsym:tsym;out srsymtable:TSymtable):boolean;
|
|
var
|
|
def : tdef;
|
|
i : longint;
|
|
begin
|
|
result:=false;
|
|
def:=nil;
|
|
while assigned(classh) do
|
|
begin
|
|
for i:=0 to classh.symtable.DefList.Count-1 do
|
|
begin
|
|
def:=tstoreddef(classh.symtable.DefList[i]);
|
|
{ Find also all hidden private methods to
|
|
be compatible with delphi, see tw6203 (PFV) }
|
|
if (def.typ=procdef) and
|
|
(po_msgstr in tprocdef(def).procoptions) and
|
|
(tprocdef(def).messageinf.str^=s) then
|
|
begin
|
|
srsym:=tprocdef(def).procsym;
|
|
srsymtable:=classh.symtable;
|
|
addsymref(srsym);
|
|
result:=true;
|
|
exit;
|
|
end;
|
|
end;
|
|
classh:=classh.childof;
|
|
end;
|
|
srsym:=nil;
|
|
srsymtable:=nil;
|
|
end;
|
|
|
|
|
|
function search_assignment_operator(from_def,to_def:Tdef):Tprocdef;
|
|
var
|
|
sym : Tprocsym;
|
|
hashedid : THashedIDString;
|
|
curreq,
|
|
besteq : tequaltype;
|
|
currpd,
|
|
bestpd : tprocdef;
|
|
stackitem : psymtablestackitem;
|
|
begin
|
|
hashedid.id:='assign';
|
|
besteq:=te_incompatible;
|
|
bestpd:=nil;
|
|
stackitem:=symtablestack.stack;
|
|
while assigned(stackitem) do
|
|
begin
|
|
sym:=Tprocsym(stackitem^.symtable.FindWithHash(hashedid));
|
|
if sym<>nil then
|
|
begin
|
|
if sym.typ<>procsym then
|
|
internalerror(200402031);
|
|
{ if the source type is an alias then this is only the second choice,
|
|
if you mess with this code, check tw4093 }
|
|
currpd:=sym.find_procdef_assignment_operator(from_def,to_def,curreq);
|
|
if curreq>besteq then
|
|
begin
|
|
besteq:=curreq;
|
|
bestpd:=currpd;
|
|
if (besteq=te_exact) then
|
|
break;
|
|
end;
|
|
end;
|
|
stackitem:=stackitem^.next;
|
|
end;
|
|
result:=bestpd;
|
|
end;
|
|
|
|
|
|
function search_system_type(const s: TIDString): ttypesym;
|
|
var
|
|
sym : tsym;
|
|
begin
|
|
sym:=tsym(systemunit.Find(s));
|
|
if not assigned(sym) or
|
|
(sym.typ<>typesym) then
|
|
cgmessage1(cg_f_unknown_system_type,s);
|
|
result:=ttypesym(sym);
|
|
end;
|
|
|
|
|
|
function search_class_member(pd : tobjectdef;const s : string):tsym;
|
|
{ searches n in symtable of pd and all anchestors }
|
|
var
|
|
hashedid : THashedIDString;
|
|
srsym : tsym;
|
|
begin
|
|
hashedid.id:=s;
|
|
while assigned(pd) do
|
|
begin
|
|
srsym:=tsym(pd.symtable.FindWithHash(hashedid));
|
|
if assigned(srsym) then
|
|
begin
|
|
search_class_member:=srsym;
|
|
exit;
|
|
end;
|
|
pd:=pd.childof;
|
|
end;
|
|
search_class_member:=nil;
|
|
end;
|
|
|
|
|
|
function search_macro(const s : string):tsym;
|
|
var
|
|
stackitem : psymtablestackitem;
|
|
hashedid : THashedIDString;
|
|
srsym : tsym;
|
|
begin
|
|
hashedid.id:=s;
|
|
|
|
{ First search the localmacrosymtable before searching the
|
|
global macrosymtables from the units }
|
|
if assigned(current_module) then
|
|
begin
|
|
srsym:=tsym(current_module.localmacrosymtable.FindWithHash(hashedid));
|
|
if assigned(srsym) then
|
|
begin
|
|
result:= srsym;
|
|
exit;
|
|
end;
|
|
end;
|
|
|
|
stackitem:=macrosymtablestack.stack;
|
|
while assigned(stackitem) do
|
|
begin
|
|
srsym:=tsym(stackitem^.symtable.FindWithHash(hashedid));
|
|
if assigned(srsym) then
|
|
begin
|
|
result:= srsym;
|
|
exit;
|
|
end;
|
|
stackitem:=stackitem^.next;
|
|
end;
|
|
result:= nil;
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
Object Helpers
|
|
****************************************************************************}
|
|
|
|
procedure search_class_overloads(aprocsym : tprocsym);
|
|
{ searches n in symtable of pd and all anchestors }
|
|
var
|
|
hashedid : THashedIDString;
|
|
srsym : tprocsym;
|
|
objdef : tobjectdef;
|
|
begin
|
|
if aprocsym.overloadchecked then
|
|
exit;
|
|
aprocsym.overloadchecked:=true;
|
|
if (aprocsym.owner.symtabletype<>ObjectSymtable) then
|
|
internalerror(200111021);
|
|
objdef:=tobjectdef(aprocsym.owner.defowner);
|
|
{ we start in the parent }
|
|
if not assigned(objdef.childof) then
|
|
exit;
|
|
objdef:=objdef.childof;
|
|
hashedid.id:=aprocsym.name;
|
|
while assigned(objdef) do
|
|
begin
|
|
srsym:=tprocsym(objdef.symtable.FindWithHash(hashedid));
|
|
if assigned(srsym) then
|
|
begin
|
|
if (srsym.typ<>procsym) then
|
|
internalerror(200111022);
|
|
if srsym.is_visible_for_object(tobjectdef(aprocsym.owner.defowner),tobjectdef(aprocsym.owner.defowner)) then
|
|
begin
|
|
srsym.add_para_match_to(Aprocsym,[cpo_ignorehidden,cpo_allowdefaults]);
|
|
{ we can stop if the overloads were already added
|
|
for the found symbol }
|
|
if srsym.overloadchecked then
|
|
break;
|
|
end;
|
|
end;
|
|
{ next parent }
|
|
objdef:=objdef.childof;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tstoredsymtable.testfordefaultproperty(sym:TObject;arg:pointer);
|
|
begin
|
|
if (tsym(sym).typ=propertysym) and
|
|
(ppo_defaultproperty in tpropertysym(sym).propoptions) then
|
|
ppointer(arg)^:=sym;
|
|
end;
|
|
|
|
|
|
function search_default_property(pd : tobjectdef) : tpropertysym;
|
|
{ returns the default property of a class, searches also anchestors }
|
|
var
|
|
_defaultprop : tpropertysym;
|
|
begin
|
|
_defaultprop:=nil;
|
|
while assigned(pd) do
|
|
begin
|
|
pd.symtable.SymList.ForEachCall(@tstoredsymtable(pd.symtable).testfordefaultproperty,@_defaultprop);
|
|
if assigned(_defaultprop) then
|
|
break;
|
|
pd:=pd.childof;
|
|
end;
|
|
search_default_property:=_defaultprop;
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
Macro Helpers
|
|
****************************************************************************}
|
|
|
|
procedure def_system_macro(const name : string);
|
|
var
|
|
mac : tmacro;
|
|
s: string;
|
|
begin
|
|
if name = '' then
|
|
internalerror(2004121202);
|
|
s:= upper(name);
|
|
mac:=tmacro(search_macro(s));
|
|
if not assigned(mac) then
|
|
begin
|
|
mac:=tmacro.create(s);
|
|
if assigned(current_module) then
|
|
current_module.localmacrosymtable.insert(mac)
|
|
else
|
|
initialmacrosymtable.insert(mac);
|
|
end;
|
|
if not mac.defined then
|
|
Message1(parser_c_macro_defined,mac.name);
|
|
mac.defined:=true;
|
|
end;
|
|
|
|
|
|
procedure set_system_macro(const name, value : string);
|
|
var
|
|
mac : tmacro;
|
|
s: string;
|
|
begin
|
|
if name = '' then
|
|
internalerror(2004121203);
|
|
s:= upper(name);
|
|
mac:=tmacro(search_macro(s));
|
|
if not assigned(mac) then
|
|
begin
|
|
mac:=tmacro.create(s);
|
|
if assigned(current_module) then
|
|
current_module.localmacrosymtable.insert(mac)
|
|
else
|
|
initialmacrosymtable.insert(mac);
|
|
end
|
|
else
|
|
begin
|
|
mac.is_compiler_var:=false;
|
|
if assigned(mac.buftext) then
|
|
freemem(mac.buftext,mac.buflen);
|
|
end;
|
|
Message2(parser_c_macro_set_to,mac.name,value);
|
|
mac.buflen:=length(value);
|
|
getmem(mac.buftext,mac.buflen);
|
|
move(value[1],mac.buftext^,mac.buflen);
|
|
mac.defined:=true;
|
|
end;
|
|
|
|
|
|
procedure set_system_compvar(const name, value : string);
|
|
var
|
|
mac : tmacro;
|
|
s: string;
|
|
begin
|
|
if name = '' then
|
|
internalerror(2004121204);
|
|
s:= upper(name);
|
|
mac:=tmacro(search_macro(s));
|
|
if not assigned(mac) then
|
|
begin
|
|
mac:=tmacro.create(s);
|
|
mac.is_compiler_var:=true;
|
|
if assigned(current_module) then
|
|
current_module.localmacrosymtable.insert(mac)
|
|
else
|
|
initialmacrosymtable.insert(mac);
|
|
end
|
|
else
|
|
begin
|
|
mac.is_compiler_var:=true;
|
|
if assigned(mac.buftext) then
|
|
freemem(mac.buftext,mac.buflen);
|
|
end;
|
|
Message2(parser_c_macro_set_to,mac.name,value);
|
|
mac.buflen:=length(value);
|
|
getmem(mac.buftext,mac.buflen);
|
|
move(value[1],mac.buftext^,mac.buflen);
|
|
mac.defined:=true;
|
|
end;
|
|
|
|
|
|
procedure undef_system_macro(const name : string);
|
|
var
|
|
mac : tmacro;
|
|
s: string;
|
|
begin
|
|
if name = '' then
|
|
internalerror(2004121205);
|
|
s:= upper(name);
|
|
mac:=tmacro(search_macro(s));
|
|
if not assigned(mac) then
|
|
{If not found, then it's already undefined.}
|
|
else
|
|
begin
|
|
if mac.defined then
|
|
Message1(parser_c_macro_undefined,mac.name);
|
|
mac.defined:=false;
|
|
mac.is_compiler_var:=false;
|
|
{ delete old definition }
|
|
if assigned(mac.buftext) then
|
|
begin
|
|
freemem(mac.buftext,mac.buflen);
|
|
mac.buftext:=nil;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
{$ifdef UNITALIASES}
|
|
{****************************************************************************
|
|
TUNIT_ALIAS
|
|
****************************************************************************}
|
|
|
|
constructor tunit_alias.create(const n:string);
|
|
var
|
|
i : longint;
|
|
begin
|
|
i:=pos('=',n);
|
|
if i=0 then
|
|
fail;
|
|
inherited createname(Copy(n,1,i-1));
|
|
newname:=stringdup(Copy(n,i+1,255));
|
|
end;
|
|
|
|
|
|
destructor tunit_alias.destroy;
|
|
begin
|
|
stringdispose(newname);
|
|
inherited destroy;
|
|
end;
|
|
|
|
|
|
procedure addunitalias(const n:string);
|
|
begin
|
|
unitaliases^.insert(tunit_alias,init(Upper(n))));
|
|
end;
|
|
|
|
|
|
function getunitalias(const n:string):string;
|
|
var
|
|
p : punit_alias;
|
|
begin
|
|
p:=punit_alias(unitaliases^.Find(Upper(n)));
|
|
if assigned(p) then
|
|
getunitalias:=punit_alias(p).newname^
|
|
else
|
|
getunitalias:=n;
|
|
end;
|
|
{$endif UNITALIASES}
|
|
|
|
|
|
{****************************************************************************
|
|
Init/Done Symtable
|
|
****************************************************************************}
|
|
|
|
procedure IniTSymtable;
|
|
begin
|
|
{ Reset symbolstack }
|
|
symtablestack:=nil;
|
|
systemunit:=nil;
|
|
{ create error syms and def }
|
|
generrorsym:=terrorsym.create;
|
|
generrordef:=terrordef.create;
|
|
{ macros }
|
|
initialmacrosymtable:=tmacrosymtable.create(false);
|
|
macrosymtablestack:=TSymtablestack.create;
|
|
macrosymtablestack.push(initialmacrosymtable);
|
|
{$ifdef UNITALIASES}
|
|
{ unit aliases }
|
|
unitaliases:=TFPHashObjectList.create;
|
|
{$endif}
|
|
{ set some global vars to nil, might be important for the ide }
|
|
class_tobject:=nil;
|
|
interface_iunknown:=nil;
|
|
rec_tguid:=nil;
|
|
dupnr:=0;
|
|
end;
|
|
|
|
|
|
procedure DoneSymtable;
|
|
begin
|
|
generrorsym.owner:=nil;
|
|
generrorsym.free;
|
|
generrordef.owner:=nil;
|
|
generrordef.free;
|
|
initialmacrosymtable.free;
|
|
macrosymtablestack.free;
|
|
{$ifdef UNITALIASES}
|
|
unitaliases.free;
|
|
{$endif}
|
|
end;
|
|
|
|
end.
|