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121 lines
3.6 KiB
ObjectPascal
121 lines
3.6 KiB
ObjectPascal
{
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$Id: symutil.pas,v 1.8 2005/02/14 17:13:09 peter Exp $
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Copyright (c) 1998-2002 by Florian Klaempfl
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This unit provides some help routines for symbol handling
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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 symutil;
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{$i fpcdefs.inc}
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interface
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uses
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symbase,symtype,symsym,cclasses;
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function is_funcret_sym(p:tsymentry):boolean;
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{ returns true, if sym needs an entry in the proplist of a class rtti }
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function needs_prop_entry(sym : tsym) : boolean;
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function equal_constsym(sym1,sym2:tconstsym):boolean;
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procedure count_locals(p:tnamedindexitem;arg:pointer);
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implementation
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uses
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globtype,cpuinfo,procinfo,
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symconst;
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function is_funcret_sym(p:tsymentry):boolean;
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begin
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is_funcret_sym:=(p.typ in [absolutevarsym,localvarsym,paravarsym]) and
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(vo_is_funcret in tabstractvarsym(p).varoptions);
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end;
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function needs_prop_entry(sym : tsym) : boolean;
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begin
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needs_prop_entry:=(sp_published in tsym(sym).symoptions) and
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(sym.typ in [propertysym,fieldvarsym]);
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end;
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function equal_constsym(sym1,sym2:tconstsym):boolean;
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var
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p1,p2,pend : pchar;
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begin
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equal_constsym:=false;
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if sym1.consttyp<>sym2.consttyp then
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exit;
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case sym1.consttyp of
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constord :
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equal_constsym:=(sym1.value.valueord=sym2.value.valueord);
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constpointer :
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equal_constsym:=(sym1.value.valueordptr=sym2.value.valueordptr);
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conststring,constresourcestring :
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begin
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if sym1.value.len=sym2.value.len then
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begin
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p1:=pchar(sym1.value.valueptr);
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p2:=pchar(sym2.value.valueptr);
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pend:=p1+sym1.value.len;
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while (p1<pend) do
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begin
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if p1^<>p2^ then
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break;
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inc(p1);
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inc(p2);
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end;
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if (p1=pend) then
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equal_constsym:=true;
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end;
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end;
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constreal :
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equal_constsym:=(pbestreal(sym1.value.valueptr)^=pbestreal(sym2.value.valueptr)^);
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constset :
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equal_constsym:=(pnormalset(sym1.value.valueptr)^=pnormalset(sym2.value.valueptr)^);
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constnil :
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equal_constsym:=true;
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end;
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end;
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procedure count_locals(p:tnamedindexitem;arg:pointer);
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begin
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{ Count only varsyms, but ignore the funcretsym }
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if (tsym(p).typ in [localvarsym,paravarsym]) and
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(tsym(p)<>current_procinfo.procdef.funcretsym) and
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(not(vo_is_parentfp in tabstractvarsym(p).varoptions) or
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(tstoredsym(p).refs>0)) then
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inc(plongint(arg)^);
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end;
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end.
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{
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$Log: symutil.pas,v $
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Revision 1.8 2005/02/14 17:13:09 peter
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* truncate log
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}
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