From 4b8dd80f18ae1e4bad0c61d55de685d69dfdbe1c Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Mon, 10 Aug 2026 10:47:26 +0100
Subject: Add type parameters to Java method declarations

---
 .../compiler/output/lang/java/JavaWriterTests.java   | 20 ++++++++++++++++++++
 .../lang/java/ast/JavaMethodDeclarationMatcher.java  |  6 ++++++
 2 files changed, 26 insertions(+)

(limited to 'src/test')

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 e8556bc..68be253 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
@@ -790,6 +790,26 @@ public class JavaWriterTests {
         ));
     }
 
+    @Test
+    public void methodWithTypeParams() throws IOException {
+        var java = JavaMethodDeclaration.arbitrary()
+            .withName(JavaIdentifier.of("a"))
+            .withVisibility(JavaVisibility.PUBLIC)
+            .withKind(JavaMemberKind.INSTANCE)
+            .addTypeParameter(JavaTypeParameter.arbitrary().withName(JavaIdentifier.of("T1")))
+            .addTypeParameter(JavaTypeParameter.arbitrary().withName(JavaIdentifier.of("T2")))
+            .withReturnType(JavaTypeRef.VOID)
+            .withBody(JavaBlock.EMPTY)
+            .build();
+
+        var string = write(writer -> writer.writeMethodDeclaration(java));
+
+        assertThat(string, equalTo("""
+            public <T1, T2> void a() {
+            }"""
+        ));
+    }
+
     @Test
     public void methodWithParams() throws IOException {
         var java = JavaMethodDeclaration.arbitrary()
diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaMethodDeclarationMatcher.java b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaMethodDeclarationMatcher.java
index ca0b998..1bd0d6f 100644
--- a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaMethodDeclarationMatcher.java
+++ b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaMethodDeclarationMatcher.java
@@ -48,6 +48,12 @@ public final class JavaMethodDeclarationMatcher implements org.zwobble.precisely
         return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaMethodDeclarationMatcher(submatchers);
     }
 
+    public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaMethodDeclarationMatcher withTypeParameters(org.zwobble.precisely.Matcher<? super java.util.List<org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaTypeParameter>> typeParameters) {
+        var submatchers = new java.util.ArrayList<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaMethodDeclaration>>(this.submatchers);
+        submatchers.add(org.zwobble.precisely.Matchers.has("typeParameters", org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaMethodDeclaration::typeParameters, typeParameters));
+        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaMethodDeclarationMatcher(submatchers);
+    }
+
     public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaMethodDeclarationMatcher withReturnType(org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaTypeRef> returnType) {
         var submatchers = new java.util.ArrayList<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaMethodDeclaration>>(this.submatchers);
         submatchers.add(org.zwobble.precisely.Matchers.has("returnType", org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaMethodDeclaration::returnType, returnType));
-- 
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