Here is the template for deep equals of objects through rtti. You can expand it or customize
unit DeepEquals;
interface
uses
classes,
rtti;
type
TObjectHelpers = class Helper for TObject
function DeepEquals(const aObject: TObject): boolean;
function CheckDeepEquals(const aObject: TObject): Boolean;
end;
implementation
uses
sysutils,
typinfo;
{ TObjectHelpers }
function TObjectHelpers.CheckDeepEquals(const aObject: TObject): Boolean;
begin
if not DeepEquals(aObject) then
raise Exception.Create('Objects are not equal');
end;
function TObjectHelpers.DeepEquals(const aObject: TObject): boolean;
var
c: TRttiContext;
t: TRttiType;
p: TRttiProperty;
begin
result := true;
if self = aObject then
exit; // Equal as same pointer
if (self = nil) and (aObject = nil) then
exit; // equal as both non instanced
if (self = nil) and (aObject <> nil) then
begin
result := false;
exit; // one nil other non nil fail
end;
if (self <> nil) and (aObject = nil) then
begin
result := false;
exit; // one nil other non nil fail
end;
if self.ClassType <> aObject.ClassType then
begin
result := false;
exit;
end;
c := TRttiContext.Create;
try
t := c.GetType(aObject.ClassType);
for p in t.GetProperties do
begin
if ((p.GetValue(self).IsObject)) then
begin
if not TObject(p.GetValue(self).AsObject).DeepEquals(TObject(p.GetValue(aObject).AsObject)) then
begin
result := false;
exit;
end;
end
else if AnsiSameText(p.PropertyType.Name, 'DateTime') or AnsiSameText(p.PropertyType.Name, 'TDateTime') then
begin
if p.GetValue(self).AsExtended <> p.GetValue(aObject).AsExtended then
begin
result := false;
exit;
end;
end
else if AnsiSameText(p.PropertyType.Name, 'Boolean') then
begin
if p.GetValue(self).AsBoolean <> p.GetValue(aObject).AsBoolean then
begin
result := false;
exit;
end;
end
else if AnsiSameText(p.PropertyType.Name, 'Currency') then
begin
if p.GetValue(self).AsExtended <> p.GetValue(aObject).AsExtended then
begin
result := false;
exit;
end;
end
else if p.PropertyType.TypeKind = tkString then
begin
if p.GetValue(self).AsString <> p.GetValue(aObject).AsString then
begin
result := false;
exit;
end;
end
else if p.PropertyType.TypeKind = tkInteger then
begin
if p.GetValue(self).AsInteger <> p.GetValue(aObject).AsInteger then
begin
result := false;
exit;
end;
end
else if p.PropertyType.TypeKind = tkInt64 then
begin
if p.GetValue(self).AsInt64 <> p.GetValue(aObject).AsInt64 then
begin
result := false;
exit;
end;
end
else if p.PropertyType.TypeKind = tkEnumeration then
begin
if p.GetValue(self).AsOrdinal <> p.GetValue(aObject).AsOrdinal then
begin
result := false;
exit;
end;
end
else
begin
if p.GetValue(self).AsVariant <> p.GetValue(aObject).AsVariant then
begin
result := false;
exit;
end;
end;
end;
finally
c.Free;
end;
end;
end.