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RTTI GetMethods
#40045622
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unit Unit2;
interface
uses
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants,
System.Classes, Vcl.Graphics,
Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, rtti,
Generics.Collections, Vcl.ExtCtrls,
System.IOUtils, typinfo;
type
TForm2 = class(TForm)
Memo1: TMemo;
Button1: TButton;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
TA = class
public
constructor Create; virtual;
function Test(const A: string): Integer; overload;
function Test(const B: PWideChar): Integer; overload;
function Test(const B: PAnsiChar): Integer; overload;
end;
TB = class(TA)
public
constructor Create; overload; override;
constructor Create(const aParam: Int32); reintroduce; overload;
function Test(const A: string): Integer; overload;
function Test(const B: PWideChar): Integer; overload;
function Test(const B: PAnsiChar): Integer; overload;
end;
var
Form2: TForm2;
implementation
{$R *.dfm}
function TA.Test(const A: string): Integer;
begin
end;
function TA.Test(const B: PWideChar): Integer;
begin
end;
function TA.Test(const B: PAnsiChar): Integer;
begin
end;
constructor TA.Create;
begin
end;
constructor TB.Create;
begin
end;
function TB.Test(const A: string): Integer;
begin
end;
function TB.Test(const B: PWideChar): Integer;
begin
end;
function TB.Test(const B: PAnsiChar): Integer;
begin
end;
constructor TB.Create(const aParam: Int32);
begin
end;
type
TListMethods = TArray<TRttiMethod>;
TArgsExistList = TDictionary<string, TListMethods>;
TArgsExistListPairItem = TPair<string, TListMethods>;
function GetMethodsOnly2(base: TRttiType; var MethodsCount: Integer)
: TArgsExistList;
var
Method: TRttiMethod;
name: string;
Items: TListMethods;
i: Integer;
function IsParameterExist: Boolean;
var
A, B: TArray<TRttiParameter>;
count, i: Integer;
begin
A := Method.GetParameters;
for i := Low(Items) to High(Items) do
begin
B := Items[i].GetParameters;
count := length(A);
if count <> length(B) then
Continue;
while count > 0 do
begin
if A[count - 1].ParamType <> B[count - 1].ParamType then
Break;
dec(count);
end;
if count <= 0 then
exit(true);
end;
Result := false;
end;
begin
MethodsCount := 0;
Result := TArgsExistList.Create();
while base <> nil do
begin
for Method in base.GetDeclaredMethods do
begin
name := Method.name.ToLower;
if Result.TryGetValue(name, Items) then
if IsParameterExist then
Continue;
i := length(Items);
SetLength(Items, i + 1);
Items[i] := Method;
inc(MethodsCount);
Result.AddOrSetValue(name, Items);
end;
base := base.BaseType;
end;
end;
procedure TForm2.Button1Click(Sender: TObject);
var
r: TRttiType;
m: TRttiMethod;
List: TArgsExistList;
Item: TArgsExistListPairItem;
MethodsCount: Integer;
begin
Memo1.Lines.Clear;
r := TRttiContext.Create.GetType(TypeInfo(TB));
List := GetMethodsOnly2(r, MethodsCount);
Memo1.Lines.Add('-------------');
for Item in List do
begin
for m in Item.Value do
begin
Memo1.Lines.Add(m.ToString);
end;
Memo1.Lines.Add('-------------');
end;
Memo1.Lines.Add(MethodsCount.ToString);
List.Free;
end;
end.
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-------------
function ClassType: TClass
-------------
class function GetInterfaceTable: PInterfaceTable
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class function InheritsFrom(AClass: TClass): Boolean
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class function GetInterfaceEntry(const IID: TGUID): PInterfaceEntry
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class function InstanceSize: Integer
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function Test(const A: string): Integer
function Test(const B: PWideChar): Integer
function Test(const B: PAnsiChar): Integer
-------------
function SafeCallException(ExceptObject: TObject; ExceptAddr: Pointer): HRESULT
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procedure AfterConstruction
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class function InitInstance(Instance: Pointer): TObject
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class function ClassParent: TClass
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function GetHashCode: Integer
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procedure Free
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class function MethodAddress(const Name: ShortString): Pointer
class function MethodAddress(const Name: string): Pointer
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class function QualifiedClassName: string
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function GetInterface(const IID: TGUID; out Obj): Boolean
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class function UnitName: string
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procedure Dispatch(var Message)
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constructor Create
constructor Create(const aParam: Integer)
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procedure BeforeDestruction
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class function ClassInfo: Pointer
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class function MethodName(Address: Pointer): string
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procedure CleanupInstance
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procedure DefaultHandler(var Message)
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function FieldAddress(const Name: ShortString): Pointer
function FieldAddress(const Name: string): Pointer
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destructor Destroy
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class function ClassName: string
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class function NewInstance: TObject
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function ToString: string
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function Equals(Obj: TObject): Boolean
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procedure FreeInstance
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procedure DisposeOf
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class function ClassNameIs(const Name: string): Boolean
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class function UnitScope: string
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