From aa49b9035c89eeeda86345971b159b24b5f38b82 Mon Sep 17 00:00:00 2001
From: Mathis Beer <Mathis.Beer@funkwerk-itk.com>
Date: Mon, 6 Oct 2025 18:56:23 +0200
Subject: [PATCH] Tag the constructor arguments in new-anonymous-class calls as
 named arguments.

---
 src/dfmt/ast_info.d          | 6 ++++++
 tests/allman/issue0586.d.ref | 4 ++++
 tests/issue0586.d            | 5 +++++
 tests/knr/issue0586.d.ref    | 3 +++
 tests/otbs/issue0586.d.ref   | 3 +++
 5 files changed, 21 insertions(+)

diff --git a/src/dfmt/ast_info.d b/src/dfmt/ast_info.d
index 7101471..02606aa 100644
--- a/src/dfmt/ast_info.d
+++ b/src/dfmt/ast_info.d
@@ -464,6 +464,12 @@ final class FormatVisitor : ASTVisitor
         newCall.accept(this);
     }
 
+    override void visit(const NewAnonClassExpression newAnonClassCall)
+    {
+        visit(newAnonClassCall.constructorArguments);
+        newAnonClassCall.accept(this);
+    }
+
     private void visit(const Arguments arguments)
     {
         // Check if call has any arguments.
diff --git a/tests/allman/issue0586.d.ref b/tests/allman/issue0586.d.ref
index 1a33a3d..2ce03d8 100644
--- a/tests/allman/issue0586.d.ref
+++ b/tests/allman/issue0586.d.ref
@@ -31,4 +31,8 @@ void test()
 {
     return Struct(foo: field.foo, bar: field.bar, baz: field.baz);
     return new Class(foo: field.foo, bar: field.bar, baz: field.baz);
+    // anonymous class
+    return new class(foo: field.foo, bar: field.bar, baz: field.baz) Class
+    {
+    };
 }
diff --git a/tests/issue0586.d b/tests/issue0586.d
index 3d8d32a..c7784dc 100644
--- a/tests/issue0586.d
+++ b/tests/issue0586.d
@@ -39,4 +39,9 @@ void test() {
         foo: field.foo,
         bar: field.bar,
         baz: field.baz);
+    // anonymous class
+    return new class(
+        foo: field.foo,
+        bar: field.bar,
+        baz: field.baz) Class { };
 }
diff --git a/tests/knr/issue0586.d.ref b/tests/knr/issue0586.d.ref
index 2a6a6a3..f869769 100644
--- a/tests/knr/issue0586.d.ref
+++ b/tests/knr/issue0586.d.ref
@@ -30,4 +30,7 @@ void test()
 {
     return Struct(foo: field.foo, bar: field.bar, baz: field.baz);
     return new Class(foo: field.foo, bar: field.bar, baz: field.baz);
+    // anonymous class
+    return new class(foo: field.foo, bar: field.bar, baz: field.baz) Class {
+    };
 }
diff --git a/tests/otbs/issue0586.d.ref b/tests/otbs/issue0586.d.ref
index d6ab363..056a6e6 100644
--- a/tests/otbs/issue0586.d.ref
+++ b/tests/otbs/issue0586.d.ref
@@ -26,4 +26,7 @@ void main() {
 void test() {
     return Struct(foo: field.foo, bar: field.bar, baz: field.baz);
     return new Class(foo: field.foo, bar: field.bar, baz: field.baz);
+    // anonymous class
+    return new class(foo: field.foo, bar: field.bar, baz: field.baz) Class {
+    };
 }