From f55983f8a5fefe039df83fc601679fc32e04581e Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Tue, 30 Jun 2026 20:44:46 +0100
Subject: Write doc comment for Rust structs

---
 .../compiler/output/lang/java/JavaWriterTests.java       |  2 --
 .../compiler/output/lang/rust/RustWriterTests.java       | 16 ++++++++++++++++
 .../output/lang/rust/ast/RustStructStructMatcher.java    |  4 ++++
 3 files changed, 20 insertions(+), 2 deletions(-)

(limited to 'src/test/java/org')

diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriterTests.java b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriterTests.java
index 992d9bd..cd74430 100644
--- a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriterTests.java
+++ b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriterTests.java
@@ -7,8 +7,6 @@ import org.zwobble.hobgoblin.compiler.output.lang.java.ast.*;
 
 import java.io.IOException;
 import java.io.StringWriter;
-import java.io.Writer;
-import java.nio.file.NoSuchFileException;
 import java.util.List;
 import java.util.Optional;
 
diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/rust/RustWriterTests.java b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/rust/RustWriterTests.java
index c41bb9e..eca8685 100644
--- a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/rust/RustWriterTests.java
+++ b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/rust/RustWriterTests.java
@@ -1,6 +1,7 @@
 package org.zwobble.hobgoblin.compiler.output.lang.rust;
 
 import org.junit.jupiter.api.Test;
+import org.zwobble.hobgoblin.compiler.ast.DocComment;
 import org.zwobble.hobgoblin.compiler.output.CodeWriter;
 import org.zwobble.hobgoblin.compiler.output.lang.rust.ast.*;
 
@@ -70,6 +71,21 @@ public class RustWriterTests {
             }"""));
     }
 
+    @Test
+    public void structWithDocComment() throws IOException {
+        var rust = RustStructStruct.arbitrary()
+            .withName(new RustIdentifier("Rectangle"))
+            .withDocComment(new DocComment("A 2D rectangle."))
+            .build();
+
+        var string = write(writer -> writer.writeItem(rust));
+
+        assertThat(string, equalTo("""
+            /// A 2D rectangle.
+            pub struct Rectangle {
+            }"""));
+    }
+
     @Test
     public void typeSegmentsAreSeparatedByDoubleColons() throws IOException {
         var rust = RustTypePath.of("std", "string", "String");
diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustStructStructMatcher.java b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustStructStructMatcher.java
index e8c6c39..1bbacef 100644
--- a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustStructStructMatcher.java
+++ b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustStructStructMatcher.java
@@ -36,6 +36,10 @@ public class RustStructStructMatcher implements org.zwobble.precisely.Matcher<ja
         return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustStructStructMatcher(java.util.stream.Stream.concat(this.submatchers.stream(), java.util.stream.Stream.of(org.zwobble.precisely.Matchers.has("fields", org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustStructStruct::fields, fields))).toList());
     }
 
+    public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustStructStructMatcher withDocComment(org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.ast.DocComment> docComment) {
+        return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustStructStructMatcher(java.util.stream.Stream.concat(this.submatchers.stream(), java.util.stream.Stream.of(org.zwobble.precisely.Matchers.has("docComment", org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustStructStruct::docComment, docComment))).toList());
+    }
+
     // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustStructStructMatcher body
     // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustStructStructMatcher body
 }
-- 
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