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9adb202a92
+ Some initial work on a formaldef which also carries the typinfo of a parameter. git-svn-id: trunk@7639 -
98 lines
3.0 KiB
ObjectPascal
98 lines
3.0 KiB
ObjectPascal
{
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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;
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function is_funcret_sym(p:TSymEntry):boolean;
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function equal_constsym(sym1,sym2:tconstsym):boolean;
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implementation
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uses
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cclasses,
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globtype,cpuinfo,procinfo,constexp,
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symconst,widestr;
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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 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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constwstring :
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begin
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if (sym1.value.len=sym2.value.len) and
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(comparewidestrings(sym1.value.valueptr,sym2.value.valueptr)=0) then
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equal_constsym:=true;
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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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end.
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