1 files changed, 119 insertions, 0 deletions
diff --git a/compiler/symutil.pas b/compiler/symutil.pas
new file mode 100644
index 0000000000..6e9c87b1a8
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+++ b/compiler/symutil.pas
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+{
+    Copyright (c) 1998-2002 by Florian Klaempfl
+
+    This unit provides some help routines for symbol handling
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ ****************************************************************************
+}
+unit symutil;
+
+{$i fpcdefs.inc}
+
+interface
+
+    uses
+       symbase,symtype,symsym,cclasses;
+
+    function is_funcret_sym(p:tsymentry):boolean;
+
+    { returns true, if sym needs an entry in the proplist of a class rtti }
+    function needs_prop_entry(sym : tsym) : boolean;
+
+    function equal_constsym(sym1,sym2:tconstsym):boolean;
+
+    procedure count_locals(p:tnamedindexitem;arg:pointer);
+
+implementation
+
+    uses
+       globtype,cpuinfo,procinfo,
+       symconst,widestr;
+
+
+    function is_funcret_sym(p:tsymentry):boolean;
+      begin
+        is_funcret_sym:=(p.typ in [absolutevarsym,localvarsym,paravarsym]) and
+                        (vo_is_funcret in tabstractvarsym(p).varoptions);
+      end;
+
+
+    function needs_prop_entry(sym : tsym) : boolean;
+
+      begin
+         needs_prop_entry:=(sp_published in tsym(sym).symoptions) and
+         (sym.typ in [propertysym,fieldvarsym]);
+      end;
+
+
+    function equal_constsym(sym1,sym2:tconstsym):boolean;
+      var
+        p1,p2,pend : pchar;
+      begin
+        equal_constsym:=false;
+        if sym1.consttyp<>sym2.consttyp then
+         exit;
+        case sym1.consttyp of
+           constord :
+             equal_constsym:=(sym1.value.valueord=sym2.value.valueord);
+           constpointer :
+             equal_constsym:=(sym1.value.valueordptr=sym2.value.valueordptr);
+           conststring,constresourcestring :
+             begin
+               if sym1.value.len=sym2.value.len then
+                begin
+                  p1:=pchar(sym1.value.valueptr);
+                  p2:=pchar(sym2.value.valueptr);
+                  pend:=p1+sym1.value.len;
+                  while (p1<pend) do
+                   begin
+                     if p1^<>p2^ then
+                      break;
+                     inc(p1);
+                     inc(p2);
+                   end;
+                  if (p1=pend) then
+                   equal_constsym:=true;
+                end;
+             end;
+           constwstring :
+             begin
+               if (sym1.value.len=sym2.value.len) and
+                  (comparewidestrings(sym1.value.valueptr,sym2.value.valueptr)=0) then
+                 equal_constsym:=true;
+             end;
+           constreal :
+             equal_constsym:=(pbestreal(sym1.value.valueptr)^=pbestreal(sym2.value.valueptr)^);
+           constset :
+             equal_constsym:=(pnormalset(sym1.value.valueptr)^=pnormalset(sym2.value.valueptr)^);
+           constnil :
+             equal_constsym:=true;
+        end;
+      end;
+
+
+    procedure count_locals(p:tnamedindexitem;arg:pointer);
+      begin
+        { Count only varsyms, but ignore the funcretsym }
+        if (tsym(p).typ in [localvarsym,paravarsym]) and
+           (tsym(p)<>current_procinfo.procdef.funcretsym) and
+           (not(vo_is_parentfp in tabstractvarsym(p).varoptions) or
+            (tstoredsym(p).refs>0)) then
+          inc(plongint(arg)^);
+      end;
+
+
+end.