From a706483f280e764a026f24c0542ba819c1c78201 Mon Sep 17 00:00:00 2001 From: Michael Schimmel Date: Sat, 25 Oct 2025 15:58:18 +0200 Subject: [PATCH] ASt Types --- ASTPlayground/ASTPlayground.delphilsp.json | 2 +- ASTPlayground/ASTPlayground.dpr | 3 +- ASTPlayground/ASTPlayground.dproj | 1 + Doc/Single-Map-Arguments 1.md | 128 +++++++ Src/AST/Myc.Ast.Types.pas | 374 +++++++++++++++++++++ 5 files changed, 506 insertions(+), 2 deletions(-) create mode 100644 Doc/Single-Map-Arguments 1.md create mode 100644 Src/AST/Myc.Ast.Types.pas diff --git a/ASTPlayground/ASTPlayground.delphilsp.json b/ASTPlayground/ASTPlayground.delphilsp.json index f4bdc29..c03cb2e 100644 --- a/ASTPlayground/ASTPlayground.delphilsp.json +++ b/ASTPlayground/ASTPlayground.delphilsp.json @@ -1 +1 @@ -{ "settings": { "project": "file:///T%3A/Myc/ASTPlayground/ASTPlayground.dpr", "dllname": "dcc64370.dll", "dccOptions": "-$O- -$W+ --inline:off -$R+ -$Q+ --no-config -Q -TX.exe 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a/Doc/Single-Map-Arguments 1.md b/Doc/Single-Map-Arguments 1.md new file mode 100644 index 0000000..59ee0b7 --- /dev/null +++ b/Doc/Single-Map-Arguments 1.md @@ -0,0 +1,128 @@ + +--- + +# Projektplan: "Single-Map-Argument" (SMA) Architektur + +*Datum: 23. Oktober 2025* + +## 1. Motivation: Die "Visuelle Sprache" + +Das primäre Entwicklungsziel ist **nicht** eine Text-basierte Programmiersprache, sondern ein **visueller Editor**, in dem Logik durch das Kombinieren von Blöcken erstellt wird. Der Text-Parser (`Myc.Ast.Script`) ist lediglich eine sekundäre Repräsentation. + +Für einen visuellen Editor ist syntaktische Komplexität Gift. Jede Ausnahme, jedes Schlüsselwort und jede alternative Syntax (wie `[]` vs. `()`) erfordert einen neuen, speziellen visuellen Block, was die Benutzeroberfläche überlädt und die Konsistenz bricht. + +Das ultimative Ziel ist eine **100% einheitliche Syntax**, bei der es nur noch *eine* Art gibt, eine Operation auszudrücken: den Funktionsaufruf. In einer S-Expression-Welt ist die konsistenteste Form dafür `(Funktionsname Argumente...)`. + +## 2. Ziel: Das "Single-Map-Argument" (SMA) Modell + +Um die visuelle Darstellung auf das absolute Minimum zu reduzieren (ein Block für "Funktion" und ein Slot für "Argumente"), führen wir das **"Single-Map-Argument" (SMA) Modell** ein. + +Es gibt nur noch *eine* gültige Aufrufkonvention: +`(Funktionsname {Argument-Map})` + +Jede Funktion, egal ob nativ (`+`) oder benutzerdefiniert (`my-lambda`), wird mit einem einzigen Argument aufgerufen: einem **Map-Literal** (das zu einem `TScalarRecord` ausgewertet wird). Dieses Literal definiert die Argumente über Key-Value-Paare. + +**Beispiele:** + +* **Arithmetik:** `(+ {:x 1 :y 2})` +* **RTL-Funktion:** `(Abs {:value -10})` +* **Lambda-Definition:** `(fn my-adder ({:x1 1 :x2 2}) ...)` +* **Lambda-Aufruf:** `(my-adder {:x1 5})` + +Dieses Design erfüllt die Anforderung an die visuelle Konsistenz perfekt. Ein "Aufruf"-Block im Editor hat immer nur zwei definierte Slots: den Namen (z.B. `+`) und ein Map-Literal (z.B. `{:x ..., :y ...}`). + +## 3. Analyse & Performance-Strategie + +Unsere Diskussion hat ergeben, dass dieses Modell zwar visuell perfekt, aber in einer naiven Implementierung performancetechnisch inakzeptabel wäre. + +### Das Problem: Die naive Implementierung (Verworfen) + +Eine naive Implementierung würde jeden Aufruf zur Laufzeit gleich behandeln: +1. Der `TEvaluator` wertet das Map-Literal `{:x 1 :y 2}` zu einem vollwertigen `TScalarRecord` aus (Heap-Allokation, Füllen einer Map/Dictionary-Struktur). +2. Er ruft die native `+` Funktion mit diesem *einen* `TScalarRecord`-Argument auf. +3. Die `+` Funktion (bzw. ihr Wrapper) müsste die Map parsen, die Keys `:x` und `:y` nachschlagen und die Werte extrahieren. + +Für Operationen wie `+`, die millionenfach pro Sekunde aufgerufen werden, ist dieser Overhead (Heap-Allokation + Hashmap-Lookups) katastrophal und ein absoluter Showstopper. + +### Die Lösung: Kompilierung von Aufrufsignaturen + +Wir vermeiden diesen Overhead, indem wir den **`TAstBinder` (den "Compiler")** die "Dekonstruktion" der Argument-Maps zur Compile-Zeit durchführen lassen. + +Wir implementieren eine **Drei-Pfade-Kompilierung** für `VisitFunctionCall`: + +#### Pfad 1: "Fast Path" (Nativ / RTL) + +Dieser Pfad optimiert alle Aufrufe an bekannte, fest verdrahtete RTL-Funktionen. + +* **Aktion (Binder):** + 1. Der `TAstBinder` erhält ein **statisches Registry nativer Signaturen** (z.B. `TDictionary>`). Dieses mappt Namen auf *geordnete* Key-Listen: `'+' -> [':x', ':y']`, `'Abs' -> [':value']`. + 2. Bei `(sub {:a 5 :b 3})` schlägt er `sub` nach. Treffer! Signatur ist `[':a', ':b']`. + 3. Der Binder validiert das `IMapLiteralNode` (alle Keys da? unbekannte Keys?). + 4. **Argument-Umschreibung (Rewriting):** Der Binder *ignoriert* die Map-Struktur und erzeugt einen neuen, *positionalen* `TArray`: `[ (Node 5), (Node 3) ]`. + 5. Er erzeugt einen `TBoundFunctionCallNode`, der auf die native `sub`-Funktion zeigt, aber das *neue positionale Array* als Argumentenliste enthält. +* **Aktion (Evaluator):** + 1. Der Evaluator sieht einen normalen, positionalen Aufruf. + 2. Er wertet die Argumente `5` und `3` aus und ruft die `TRtlFunctions.Subtract` direkt mit einem `TArray` auf. +* **Ergebnis:** Keinerlei Map-Allokation zur Laufzeit. Maximale Performance. + +#### Pfad 2: "Fast Path" (Direkte Lambda) + +Dieser Pfad optimiert direkte Aufrufe an Lambdas, deren Definition dem Binder bereits bekannt ist. + +* **Aktion (Binder):** + 1. Bei `(fn my-adder ({:x1 1 :x2 2}) ...)` parst der Binder die Signatur `({:x1 1, :x2 2})`. + 2. Er speichert diese Signatur-Metadaten (Keys und Default-Wert-Nodes) im `IScopeDescriptor` als Metadatum für die Variable `my-adder`. + 3. Bei einem späteren Aufruf `(my-adder {:x1 5})`: + 4. Der Binder schlägt `my-adder` im Scope nach. Treffer! Er findet die Variable *und* die gespeicherte Signatur. + 5. **Argument-Umschreibung:** Er führt die *gleiche* Optimierung wie bei nativen Aufrufen durch. Er parst das `IMapLiteralNode`, füllt fehlende Keys mit den Default-Nodes (z.B. `:x2` -> `(Node 2)`) und erzeugt einen positionalen `TArray`: `[ (Node 5), (Node 2) ]`. + 6. Er erzeugt einen `TBoundFunctionCallNode`, der das positionale Array enthält. +* **Aktion (Evaluator):** + 1. Der Evaluator wertet die Closure `my-adder` aus. + 2. Er wertet die Argumente `5` und `2` aus. + 3. Er ruft die Closure mit einem *positionalen* `TArray` auf. +* **Ergebnis:** Auch hier: Keinerlei Map-Allokation zur Laufzeit. + +#### Pfad 3: "Slow Path" (Dynamisch / Polymorph) + +Dies ist der Fallback für alle Aufrufe, die der Binder zur Compile-Zeit *unmöglich* auflösen kann. + +* **Szenarien:** + * **Funktionen höherer Ordnung (HOFs):** `(Map my-series (fn ({:item}) ...))` -> Die `Map`-Funktion *muss* die Lambda dynamisch aufrufen. + * **Indirekte Aufrufe:** `(fn call-it (func) (func {:a 1}))` -> `func` ist zur Compile-Zeit unbekannt. + * **Späte Bindung / Forward-Deklarationen.** +* **Aktion (Binder):** + 1. Der Binder kann die Signatur nicht finden. + 2. Er kann *nicht* optimieren. Er behandelt das `IMapLiteralNode` `{:a 1}` als regulären Wert. + 3. Er erzeugt einen `TBoundFunctionCallNode` mit einem Argumenten-Array, das *nur dieses eine* `IMapLiteralNode` enthält. +* **Aktion (Evaluator):** + 1. Der Evaluator *muss* nun das `IMapLiteralNode` zu einem echten `TScalarRecord` auswerten (der "Overhead" entsteht hier). + 2. Er ruft die Closure (z.B. `func`) mit *einem* Argument auf (dem `TScalarRecord`). + 3. Die Closure selbst muss die **Laufzeit-Destrukturierung** durchführen: Sie parst die Map, extrahiert die Keys (`:a`) und wendet ihre Defaults an. +* **Ergebnis:** Das System bleibt voll funktionsfähig und konsistent, nutzt aber den langsameren Pfad nur, wenn es semantisch unvermeidbar ist. + +--- + +## 4. TODOs (Detailliert) + +1. **Parser (`Myc.Ast.Script`)** + * [ ] `TLexer`: `tkLeftBracket`, `tkRightBracket` entfernen. `tkLBrace` (`{`), `tkRBrace` (`}`), `tkColon` (`:`) hinzufügen. + * [ ] `IAstNode`: `IKeywordNode` (für `:key`) und `IMapLiteralNode` (enthält `TArray>`) definieren. + * [ ] `TParser`: `ParseExpression` erweitern, um `{...}` zu `IMapLiteralNode` und `:...` zu `IKeywordNode` zu parsen. + * [ ] `TParser`: `ParseList` anpassen. Die `fn`- und `defmacro`-Logik muss die Parameterliste jetzt als `IMapLiteralNode` (für die Destrukturierung) statt einer Liste von Identifiern parsen. + +2. **Binder (`Myc.Ast.Binding`)** + * [ ] `TAstBinder.Create`: Das **Native Signature Registry** (`TDictionary>`) initialisieren. + * [ ] `TAstBinder.VisitLambdaExpression`: Die `IMapLiteralNode`-Signatur parsen. Die Metadaten (geordnete Keys und Default-`IAstNode`s) müssen in der `TBoundLambdaExpressionNode` oder im `IScopeDescriptor` gespeichert werden. + * [ ] `TAstBinder.VisitFunctionCall`: Die **Kern-Drei-Pfade-Logik** implementieren: + 1. Lookup im Native Registry (Pfad 1). + 2. Lookup im `IScopeDescriptor` nach Lambda-Metadaten (Pfad 2). + 3. Fallback auf "Slow Path" (Pfad 3). + * [ ] `TAstBinder`: Eine private `function RewriteArguments(const Signature: ...; const CallMap: IMapLiteralNode): TArray` implementieren, die die "Fast Path"-Dekonstruktion durchführt. + +3. **Evaluator (`Myc.Ast.Evaluator`)** + * [ ] `TEvaluatorVisitor`: `VisitMapLiteral` implementieren. Diese Methode wertet ein `IMapLiteralNode` zu einem `TDataValue (vkRecord)` aus (der "Slow Path"-Overhead). + * [ ] `TEvaluatorVisitor.VisitLambdaExpression`: Die *Laufzeit*-Destrukturierungslogik implementieren. Diese wird aktiv, wenn die Closure (TFunc) mit einem `TDataValue (vkRecord)` (Pfad 3) anstelle eines `TArray` (Pfad 2) aufgerufen wird. (Benötigt Anpassung der Closure-Signatur oder -Logik). + +4. **RTL (Anpassung & Registrierung)** + * [ ] `Myc.Ast.RTL.Core`: Die Implementierungen (`TRtlFunctions.Add` etc.) bleiben **unverändert**. Sie erwarten weiterhin `TArray`, da der Binder für sie übersetzt. + * [ ] `Myc.Ast.RTL`: Die RTTI-Registrierung muss erweitert werden, um dem Binder die Signaturen bereitzustellen. `TRtlFunctionAttribute` könnte erweitert werden: `[TRtlFunction('+', ':x,:y')]`. Diese Infos füllen das Native Registry im Binder. \ No newline at end of file diff --git a/Src/AST/Myc.Ast.Types.pas b/Src/AST/Myc.Ast.Types.pas new file mode 100644 index 0000000..b9c0f0f --- /dev/null +++ b/Src/AST/Myc.Ast.Types.pas @@ -0,0 +1,374 @@ +unit Myc.Ast.Types; + +interface + +uses + System.SysUtils, + System.Generics.Collections, + Myc.Data.Scalar; + +type + // Defines the categories of types available in the language. + TStaticTypeKind = ( + stUnknown, // Used during inference before a type is known + stVoid, + stOrdinal, // Int64 + stFloat, // Double + stText, + stMethod, + stSeries, + stRecord, + stRecordSeries + ); + + TStaticTypeKindHelper = record helper for TStaticTypeKind + public + function ToString: string; + end; + + // Represents a complete static type definition. + // This is a managed record, passed by value, cheap to copy. + TStaticType = record + public + type + // Forward declaration for mutual recursion + PStaticType = ^TStaticType; + + // Defines the signature of a method + IMethodSignature = interface + {$region 'private'} + function GetParamTypes: TArray; + function GetReturnType: TStaticType; + {$endregion} + property ParamTypes: TArray read GetParamTypes; + property ReturnType: TStaticType read GetReturnType; + end; + + public + Kind: TStaticTypeKind; + // Used if Kind = stMethod + Signature: IMethodSignature; + // Used if Kind = stSeries + ElementType: PStaticType; + // Used if Kind = stRecord or stRecordSeries + Definition: TScalarRecordDefinition; + + class operator Initialize(out Dest: TStaticType); + class operator Finalize(var Dest: TStaticType); + + // Factory functions + class function Create(AKind: TStaticTypeKind): TStaticType; static; + class function CreateSeries(const AElementType: TStaticType): TStaticType; static; + class function CreateMethod(const AParamTypes: TArray; const AReturnType: TStaticType): TStaticType; static; + class function CreateRecord(const ADef: TScalarRecordDefinition): TStaticType; static; + class function CreateRecordSeries(const ADef: TScalarRecordDefinition): TStaticType; static; + + class function FromScalarKind(AKind: TScalar.TKind): TStaticType; static; + + function ToString: string; + class operator Equal(const A, B: TStaticType): Boolean; + class operator NotEqual(A, B: TStaticType): Boolean; inline; + end; + + ETypeException = class(Exception); + + // Defines the rules of the type system. + TTypeRules = record + private + class function Promote(const A, B: TStaticType): TStaticType; static; + public + // Checks if a value of type 'Source' can be assigned to 'Target'. + class function CanAssign(const Target, Source: TStaticType): Boolean; static; + // Determines the result type of a binary operation. + // Raises ETypeException on failure. + class function ResolveBinaryOp(Op: TScalar.TBinaryOp; const Left, Right: TStaticType): TStaticType; static; + // Determines the result type of a unary operation. + class function ResolveUnaryOp(Op: TScalar.TUnaryOp; const Right: TStaticType): TStaticType; static; + end; + +implementation + +uses + System.Generics.Defaults; + +type + TMethodSignature = class(TInterfacedObject, TStaticType.IMethodSignature) + private + FParamTypes: TArray; + FReturnType: TStaticType; + function GetParamTypes: TArray; + function GetReturnType: TStaticType; + public + constructor Create(const AParamTypes: TArray; const AReturnType: TStaticType); + end; + +{ TMethodSignature } + +constructor TMethodSignature.Create(const AParamTypes: TArray; const AReturnType: TStaticType); +begin + inherited Create; + FParamTypes := AParamTypes; + FReturnType := AReturnType; +end; + +function TMethodSignature.GetParamTypes: TArray; +begin + Result := FParamTypes; +end; + +function TMethodSignature.GetReturnType: TStaticType; +begin + Result := FReturnType; +end; + +{ TStaticTypeKindHelper } + +function TStaticTypeKindHelper.ToString: string; +begin + case Self of + stUnknown: Result := 'Unknown'; + stVoid: Result := 'Void'; + stOrdinal: Result := 'Ordinal'; + stFloat: Result := 'Float'; + stText: Result := 'Text'; + stMethod: Result := 'Method'; + stSeries: Result := 'Series'; + stRecord: Result := 'Record'; + stRecordSeries: Result := 'RecordSeries'; + else + Result := 'ErrorType'; + end; +end; + +{ TStaticType } + +class operator TStaticType.Initialize(out Dest: TStaticType); +begin + Dest.Kind := stUnknown; + Dest.Signature := nil; + Dest.ElementType := nil; +end; + +class operator TStaticType.Finalize(var Dest: TStaticType); +begin + Dest.Signature := nil; + if Dest.ElementType <> nil then + begin + Finalize(Dest.ElementType^); + FreeMem(Dest.ElementType); + Dest.ElementType := nil; + end; + // TScalarRecordDefinition (FFields) is not owned by this record. +end; + +class operator TStaticType.Equal(const A, B: TStaticType): Boolean; +var + i: Integer; +begin + if A.Kind <> B.Kind then + exit(False); + + case A.Kind of + stSeries: Result := A.ElementType^ = B.ElementType^; + stRecord, stRecordSeries: + begin + if Length(A.Definition.Fields) <> Length(B.Definition.Fields) then + exit(False); + for i := 0 to High(A.Definition.Fields) do + begin + if (A.Definition.Fields[i].Name <> B.Definition.Fields[i].Name) + or (A.Definition.Fields[i].Kind <> B.Definition.Fields[i].Kind) then + exit(False); + end; + Result := True; + end; + stMethod: + begin + if A.Signature.ReturnType <> B.Signature.ReturnType then + exit(False); + if Length(A.Signature.ParamTypes) <> Length(B.Signature.ParamTypes) then + exit(False); + for i := 0 to High(A.Signature.ParamTypes) do + begin + if A.Signature.ParamTypes[i] <> B.Signature.ParamTypes[i] then + exit(False); + end; + Result := True; + end; + else + // stUnknown, stVoid, stOrdinal, stFloat, stText are equal if their kinds are equal. + Result := True; + end; +end; + +class function TStaticType.Create(AKind: TStaticTypeKind): TStaticType; +begin + Result.Kind := AKind; +end; + +class function TStaticType.CreateMethod(const AParamTypes: TArray; const AReturnType: TStaticType): TStaticType; +begin + Result.Kind := stMethod; + Result.Signature := TMethodSignature.Create(AParamTypes, AReturnType); +end; + +class function TStaticType.CreateRecord(const ADef: TScalarRecordDefinition): TStaticType; +begin + Result.Kind := stRecord; + Result.Definition := ADef; +end; + +class function TStaticType.CreateRecordSeries(const ADef: TScalarRecordDefinition): TStaticType; +begin + Result.Kind := stRecordSeries; + Result.Definition := ADef; +end; + +class function TStaticType.CreateSeries(const AElementType: TStaticType): TStaticType; +begin + Result.Kind := stSeries; + New(Result.ElementType); + Result.ElementType^ := AElementType; +end; + +class function TStaticType.FromScalarKind(AKind: TScalar.TKind): TStaticType; +begin + case AKind of + TScalar.TKind.Ordinal: Result.Kind := stOrdinal; + TScalar.TKind.Float: Result.Kind := stFloat; + else + raise ETypeException.Create('Cannot convert invalid TScalar.TKind to TStaticType.'); + end; +end; + +function TStaticType.ToString: string; +var + i: Integer; + paramStr: string; +begin + Result := Kind.ToString; + case Kind of + stSeries: Result := 'Series<' + ElementType^.ToString + '>'; + stRecord, stRecordSeries: + begin + Result := Result + '{'; + for i := 0 to High(Definition.Fields) do + begin + Result := Result + Definition.Fields[i].Name + ': ' + Definition.Fields[i].Kind.ToString; + if i < High(Definition.Fields) then + Result := Result + ', '; + end; + Result := Result + '}'; + end; + stMethod: + begin + paramStr := ''; + for i := 0 to High(Signature.ParamTypes) do + begin + paramStr := paramStr + Signature.ParamTypes[i].ToString; + if i < High(Signature.ParamTypes) then + paramStr := paramStr + ', '; + end; + Result := Format('Method(%s): %s', [paramStr, Signature.ReturnType.ToString]); + end; + end; +end; + +class operator TStaticType.NotEqual(A, B: TStaticType): Boolean; +begin + Result := not (A = B); +end; + +{ TTypeRules } + +class function TTypeRules.CanAssign(const Target, Source: TStaticType): Boolean; +begin + if Target = Source then + exit(True); + + // Allow assigning an integer (Ordinal) to a float variable. + if (Target.Kind = stFloat) and (Source.Kind = stOrdinal) then + exit(True); + + // TODO: Implement full assignment compatibility rules (e.g., for records/series) + + Result := False; +end; + +class function TTypeRules.Promote(const A, B: TStaticType): TStaticType; +begin + // Numeric promotion rule: Float wins + if (A.Kind = stFloat) and (B.Kind = stFloat) then + exit(TStaticType.Create(stFloat)); + if (A.Kind = stFloat) and (B.Kind = stOrdinal) then + exit(TStaticType.Create(stFloat)); + if (A.Kind = stOrdinal) and (B.Kind = stFloat) then + exit(TStaticType.Create(stFloat)); + if (A.Kind = stOrdinal) and (B.Kind = stOrdinal) then + exit(TStaticType.Create(stOrdinal)); + + raise ETypeException.CreateFmt('Cannot promote types %s and %s', [A.ToString, B.ToString]); +end; + +class function TTypeRules.ResolveBinaryOp(Op: TScalar.TBinaryOp; const Left, Right: TStaticType): TStaticType; +begin + case Op of + TScalar.TBinaryOp.Add, TScalar.TBinaryOp.Subtract, TScalar.TBinaryOp.Multiply: + begin + // Numeric operations: Promote and return + if (Left.Kind in [stOrdinal, stFloat]) and (Right.Kind in [stOrdinal, stFloat]) then + Result := Promote(Left, Right) + else + raise ETypeException.CreateFmt('Operator %s cannot be applied to %s and %s', [Op.ToString, Left.ToString, Right.ToString]); + end; + + TScalar.TBinaryOp.Divide: + begin + // Division *always* results in Float, even Ordinal / Ordinal + if (Left.Kind in [stOrdinal, stFloat]) and (Right.Kind in [stOrdinal, stFloat]) then + Result := TStaticType.Create(stFloat) + else + raise ETypeException.CreateFmt('Operator %s cannot be applied to %s and %s', [Op.ToString, Left.ToString, Right.ToString]); + end; + + TScalar.TBinaryOp.Equal, + TScalar.TBinaryOp.NotEqual, + TScalar.TBinaryOp.Less, + TScalar.TBinaryOp.Greater, + TScalar.TBinaryOp.LessOrEqual, + TScalar.TBinaryOp.GreaterOrEqual: + begin + // Comparison operations: Check if promotion is possible, but always return Ordinal (boolean) + if (Left.Kind in [stOrdinal, stFloat]) and (Right.Kind in [stOrdinal, stFloat]) then + Result := TStaticType.Create(stOrdinal) + else + raise ETypeException + .CreateFmt('Comparison operator %s cannot be applied to %s and %s', [Op.ToString, Left.ToString, Right.ToString]); + end; + else + raise ETypeException.Create('Unknown binary operator for type resolution.'); + end; +end; + +class function TTypeRules.ResolveUnaryOp(Op: TScalar.TUnaryOp; const Right: TStaticType): TStaticType; +begin + case Op of + TScalar.TUnaryOp.Negate: + begin + if not (Right.Kind in [stOrdinal, stFloat]) then + raise ETypeException.CreateFmt('Unary negation cannot be applied to %s', [Right.ToString]); + Result := Right; // Negation preserves type + end; + + TScalar.TUnaryOp.Not: + begin + if not (Right.Kind = stOrdinal) then + raise ETypeException.CreateFmt('Logical not cannot be applied to %s', [Right.ToString]); + Result := TStaticType.Create(stOrdinal); + end; + else + raise ETypeException.Create('Unknown unary operator for type resolution.'); + end; +end; + +end.