end of practical3 (no bonus)

Triangle.Compiler/src/main/java/triangle/StdEnvironment.java

@@ -42,5 +42,8 @@ public final class StdEnvironment {
 	public static ProcDeclaration getDecl, putDecl, getintDecl, putintDecl, geteolDecl, puteolDecl;
 
 	public static FuncDeclaration chrDecl, ordDecl, eolDecl, eofDecl;
+	
+	//keep the bar separate for practical 3 (week 3) work!
+	public static UnaryOperatorDeclaration barDecl;
 
 }

Triangle.Compiler/src/main/java/triangle/contextualAnalyzer/Checker.java

@@ -953,7 +953,11 @@ public final class Checker implements ActualParameterVisitor<FormalParameter, Vo
 				StdEnvironment.booleanType);
 		StdEnvironment.notlessDecl = declareStdBinaryOp(">=", StdEnvironment.integerType, StdEnvironment.integerType,
 				StdEnvironment.booleanType);
+		
+		//add the new bar operator!
+		StdEnvironment.barDecl = declareStdUnaryOp("|", StdEnvironment.integerType, StdEnvironment.integerType);
 
+		
 		StdEnvironment.charDecl = declareStdType("Char", StdEnvironment.charType);
 		StdEnvironment.chrDecl = declareStdFunc("chr",
 				new SingleFormalParameterSequence(

Triangle.Compiler/src/main/java/triangle/syntacticAnalyzer/Parser.java

@@ -929,3 +929,4 @@ public class Parser {
 		return fieldAST;
 	}
 }
+

Triangle.Compiler/src/main/java/triangle/treeDrawer/LayoutVisitor.java

@@ -162,7 +162,10 @@ public class LayoutVisitor implements ActualParameterVisitor<Void, DrawingTree>,
 	
 	@Override
 	public DrawingTree visitRepeatCommand(RepeatCommand ast, Void obj) {
-		return null;
+		//very similar to the while cmd, just reverse!
+		var d1 = ast.C.visit(this);
+		var d2 = ast.E.visit(this);
+		return layoutBinary("Repeat.Com.", d1, d2);
 	}
 
 	// Expressions