Implementing Pipes

Src/AST/Myc.Ast.Evaluator.pas

@@ -35,7 +35,7 @@ type
         function VisitRecordField(const Node: IRecordFieldNode): TDataValue; virtual;
 
         function VisitIfExpression(const Node: IIfExpressionNode): TDataValue; virtual;
-        function VisitCondExpression(const Node: ICondExpressionNode): TDataValue; virtual; // Replaces Ternary
+        function VisitCondExpression(const Node: ICondExpressionNode): TDataValue; virtual;
         function VisitLambdaExpression(const Node: ILambdaExpressionNode): TDataValue; virtual;
         function VisitMacroDefinition(const Node: IMacroDefinitionNode): TDataValue; virtual;
         function VisitQuasiquote(const Node: IQuasiquoteNode): TDataValue; virtual;
@@ -55,6 +55,12 @@ type
         function VisitRecurNode(const Node: IRecurNode): TDataValue; virtual;
         function VisitNop(const Node: INopNode): TDataValue; virtual;
 
+        // Pipe Support
+        function VisitPipeInput(const Node: IPipeInputNode): TDataValue; virtual;
+        function VisitPipeSelectorList(const Node: IPipeSelectorList): TDataValue; virtual;
+        function VisitPipeInputList(const Node: IPipeInputList): TDataValue; virtual;
+        function VisitPipe(const Node: IPipeNode): TDataValue; virtual;
+
         function IsTruthy(const AValue: TDataValue): Boolean; inline;
 
         // Returns a closure that can create the correct type of visitor for a lambda's body.
@@ -627,4 +633,33 @@ begin
     Result := TDataValue.Void;
 end;
 
+// --- Pipe Visitors Stubs ---
+
+function TEvaluatorVisitor.VisitPipe(const Node: IPipeNode): TDataValue;
+begin
+    // Placeholder for Phase 4 (Runtime Integration)
+    // Here we will:
+    // 1. Resolve Input Streams from Scope
+    // 2. Build TPipeConfig
+    // 3. Compile Lambda to TDataValue.TFunc
+    // 4. Create Adapter
+    // 5. Create TPipeStream
+    raise EEvaluatorException.Create('Pipe execution is not yet implemented.');
+end;
+
+function TEvaluatorVisitor.VisitPipeInput(const Node: IPipeInputNode): TDataValue;
+begin
+    Result := TDataValue.Void;
+end;
+
+function TEvaluatorVisitor.VisitPipeSelectorList(const Node: IPipeSelectorList): TDataValue;
+begin
+    Result := TDataValue.Void;
+end;
+
+function TEvaluatorVisitor.VisitPipeInputList(const Node: IPipeInputList): TDataValue;
+begin
+    Result := TDataValue.Void;
+end;
+
 end.