...

compiler/Compiler/Generator.cs

@@ -159,6 +159,7 @@ public sealed class Generator(List<NodeDefinition> nodes)
         {
             EmitStatement(statement.Block);
         }
+
         writer.WriteLine("}");
     }
 
@@ -166,6 +167,7 @@ public sealed class Generator(List<NodeDefinition> nodes)
     {
         return node switch
         {
+            NodeExpressionBinary expression => EmitExpressionBinary(expression),
             NodeExpressionBoolLiteral expression => expression.Value.Value ? "true" : "false",
             NodeExpressionIntLiteral expression => expression.Value.Value.ToString(),
             NodeExpressionStringLiteral expression => $"(struct string){{ \"{expression.Value.Value}\", {expression.Value.Value.Length} }}",
@@ -174,6 +176,32 @@ public sealed class Generator(List<NodeDefinition> nodes)
         };
     }
 
+    private string EmitExpressionBinary(NodeExpressionBinary expression)
+    {
+        var left = EmitExpression(expression.Left);
+        var right = EmitExpression(expression.Right);
+
+        return expression.Operation switch
+        {
+            NodeExpressionBinary.Op.Add => $"({left} + {right})",
+            NodeExpressionBinary.Op.Subtract => $"({left} - {right})",
+            NodeExpressionBinary.Op.Multiply => $"({left} * {right})",
+            NodeExpressionBinary.Op.Divide => $"({left} / {right})",
+            NodeExpressionBinary.Op.Modulo => $"({left} % {right})",
+            NodeExpressionBinary.Op.Equal => $"({left} == {right})",
+            NodeExpressionBinary.Op.NotEqual => $"({left} != {right})",
+            NodeExpressionBinary.Op.LessThan => $"({left} < {right})",
+            NodeExpressionBinary.Op.LessThanOrEqual => $"({left} <= {right})",
+            NodeExpressionBinary.Op.GreaterThan => $"({left} > {right})",
+            NodeExpressionBinary.Op.GreaterThanOrEqual => $"({left} >= {right})",
+            NodeExpressionBinary.Op.LeftShift => $"({left} << {right})",
+            NodeExpressionBinary.Op.RightShift => $"({left} >> {right})",
+            NodeExpressionBinary.Op.LogicalAnd => $"({left} && {right})",
+            NodeExpressionBinary.Op.LogicalOr => $"({left} || {right})",
+            _ => throw new ArgumentOutOfRangeException()
+        };
+    }
+
     private static string CType(NodeType node, string? varName = null)
     {
         return node switch