...

compiler/NubLang/Generation/QBE/QBEGenerator.cs

@@ -487,6 +487,9 @@ public class QBEGenerator
             case AssignmentNode assignment:
                 EmitCopyInto(assignment.Value, EmitAddressOf(assignment.Target));
                 break;
+            case BlockNode block:
+                EmitBlock(block);
+                break;
             case BreakNode:
                 EmitScopeCleanup();
                 _writer.Indented($"jmp {_breakLabels.Peek()}");
@@ -510,15 +513,9 @@ public class QBEGenerator
             case VariableDeclarationNode variableDeclaration:
                 EmitVariableDeclaration(variableDeclaration);
                 break;
-            case DeferNode defer:
-                Scope.DeferredStatements.Push(defer.Statement);
-                break;
             case WhileNode whileStatement:
                 EmitWhile(whileStatement);
                 break;
-            case ForArrayNode forArray:
-                EmitForArray(forArray);
-                break;
             default:
                 throw new ArgumentOutOfRangeException(nameof(statement));
         }
@@ -526,11 +523,6 @@ public class QBEGenerator
 
     private void EmitScopeCleanup()
     {
-        while (Scope.DeferredStatements.TryPop(out var deferredStatement))
-        {
-            EmitStatement(deferredStatement);
-        }
-
         while (Scope.Variables.TryPop(out var variable))
         {
             if (variable.Type is NubStructType structType)
@@ -613,54 +605,6 @@ public class QBEGenerator
         _breakLabels.Pop();
     }
 
-    // todo(nub31): Implement index ident
-    private void EmitForArray(ForArrayNode forArray)
-    {
-        var target = EmitExpression(forArray.Target);
-
-        var arrayStart = TmpName();
-        _writer.Indented($"{arrayStart} =l add {target}, 8");
-
-        var size = TmpName();
-        _writer.Indented($"{size} =l loadl {target}");
-
-        var count = TmpName();
-        _writer.Indented($"{count} =l copy 0");
-
-        var loopLabel = LabelName();
-        _writer.WriteLine(loopLabel);
-
-        var condition = TmpName();
-        _writer.Indented($"{condition} =w cultl {count}, {size}");
-
-        var continueLabel = LabelName();
-        var endLabel = LabelName();
-        _writer.Indented($"jnz {condition}, {continueLabel}, {endLabel}");
-        _writer.WriteLine(continueLabel);
-
-        var arrayOffset = TmpName();
-        _writer.Indented($"{arrayOffset} =l mul {count}, {SizeOf(forArray.ArrayType.ElementType)}");
-        var elementAddress = TmpName();
-        _writer.Indented($"{elementAddress} =l add {arrayStart}, {arrayOffset}");
-
-        if (forArray.ArrayType.ElementType is NubStructType)
-        {
-            _writer.Indented($"%{forArray.ElementIdent} =l copy {elementAddress}");
-        }
-        else
-        {
-            var element = EmitLoad(forArray.ArrayType.ElementType, elementAddress);
-            _writer.Indented($"%{forArray.ElementIdent} {QBEAssign(forArray.ArrayType.ElementType)} copy {element}");
-        }
-
-        EmitBlock(forArray.Body);
-
-        _writer.Indented($"{count} =l add {count}, 1");
-        _writer.Indented($"jmp {loopLabel}");
-
-        _writer.WriteLine(endLabel);
-    }
-
     private string EmitExpression(ExpressionNode expr)
     {
         return expr switch
@@ -1338,7 +1282,6 @@ public class QBEGenerator
 
 public class Scope
 {
-    public readonly Stack<StatementNode> DeferredStatements = [];
     public readonly Stack<Variable> Variables = [];
 }