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@@ -0,0 +1,124 @@
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+program DumpMethods;
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+
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+{$mode objfpc}{$H+}
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+
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+uses
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+ Classes, SysUtils;
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+
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+const
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+ VMT_COUNT = 100;
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+
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+
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+type
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+ TMethodNameTableEntry = packed record
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+ Name: PShortstring;
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+ Addr: Pointer;
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+ end;
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+
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+ TMethodNameTable = packed record
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+ Count: DWord;
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+ Entries: packed array[0..9999999] of TMethodNameTableEntry;
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+ end;
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+ PMethodNameTable = ^TMethodNameTable;
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+
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+ TPointerArray = packed array[0..9999999] of Pointer;
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+ PPointerArray = ^TPointerArray;
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+
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+{$M+}
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+ TMyTest = class(TObject)
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+// published
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+ procedure P1; virtual;
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+ procedure P2; virtual;
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+ end;
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+{$M-}
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+
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+ TMyTest2 = class(TMyTest)
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+// published
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+ procedure P2; override;
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+ procedure P3; virtual;
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+ end;
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+
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+ TMyPersistent = class(TPersistent)
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+// published
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+ procedure P1; virtual;
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+ procedure P2; virtual;
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+ end;
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+
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+procedure TMyTest.P1;
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+begin
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+end;
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+
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+procedure TMyTest.P2;
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+begin
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+end;
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+
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+procedure TMyTest2.P2;
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+begin
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+end;
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+
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+procedure TMyTest2.P3;
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+begin
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+end;
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+
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+procedure TMyPersistent.P1;
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+begin
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+end;
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+
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+procedure TMyPersistent.P2;
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+begin
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+end;
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+
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+procedure DumpClass(AClass: TClass);
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+var
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+ Cvmt: PPointerArray;
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+ Cmnt: PMethodNameTable;
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+ Indent: String;
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+ n, idx: Integer;
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+ SearchAddr: Pointer;
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+begin
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+ WriteLn('---------------------------------------------');
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+ WriteLn('Dump of ', AClass.ClassName);
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+ WriteLn('---------------------------------------------');
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+ Indent := '';
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+ while AClass <> nil do
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+ begin
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+ WriteLn(Indent, 'Processing ', AClass.Classname);
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+ Indent := Indent + ' ';
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+ Cmnt := PPointer(Pointer(AClass) + vmtMethodTable)^;
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+ if Cmnt <> nil
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+ then begin
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+ WriteLn(Indent, 'Method count: ', IntToStr(Cmnt^.Count));
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+
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+ Cvmt := Pointer(AClass) + vmtMethodStart;
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+
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+ for n := 0 to Cmnt^.Count - 1 do
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+ begin
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+ WriteLn(Indent, 'Search: ', Cmnt^.Entries[n].Name^);
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+
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+ SearchAddr := Cmnt^.Entries[n].Addr;
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+ for idx := 0 to VMT_COUNT - 1 do
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+ begin
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+ if Cvmt^[idx] = SearchAddr
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+ then begin
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+ WriteLn(Indent, 'Found at index: ', IntToStr(idx));
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+ Break;
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+ end;
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+ if idx = VMT_COUNT - 1
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+ then begin
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+ WriteLn('[WARNING] VMT entry "', Cmnt^.Entries[n].Name^, '" not found in "', AClass.ClassName, '"');
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+ Break;
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+ end;
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+ end;
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+ end;
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+ end;
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+ AClass := AClass.ClassParent;
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+ end;
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+end;
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+
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+begin
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+ DumpClass(TMyTest);
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+ DumpClass(TMyTest2);
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+ DumpClass(TPersistent);
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+ DumpClass(TMyPersistent);
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+end.
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+
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