From 5e716345a8863240b87456dd836970ad65a03449 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Fri, 12 Jun 2026 16:06:41 +0100
Subject: Add Java static field access

---
 .../hobgoblin/compiler/output/lang/java/JavaWriter.java      | 10 ++++++++++
 .../compiler/output/lang/java/ast/JavaExpression.java        |  2 +-
 .../compiler/output/lang/java/ast/JavaStaticFieldAccess.java |  7 +++++++
 .../hobgoblin/compiler/output/lang/java/JavaWriterTests.java | 12 ++++++++++++
 4 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaStaticFieldAccess.java

diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriter.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriter.java
index ec4d70f..baed6d4 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriter.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriter.java
@@ -156,6 +156,10 @@ public class JavaWriter implements AutoCloseable {
                 writeRef(ref);
             }
 
+            case JavaStaticFieldAccess staticFieldAccess -> {
+                writeStaticFieldAccess(staticFieldAccess);
+            }
+
             case JavaStaticMethodCall staticMethodCall -> {
                 writeStaticMethodCall(staticMethodCall);
             }
@@ -342,6 +346,12 @@ public class JavaWriter implements AutoCloseable {
         this.writer.write(";");
     }
 
+    private void writeStaticFieldAccess(JavaStaticFieldAccess staticFieldAccess) throws IOException {
+        this.writeTypeRef(staticFieldAccess.type());
+        this.writer.write(".");
+        this.writer.write(staticFieldAccess.fieldName());
+    }
+
     private void writeStaticMethodCall(JavaStaticMethodCall call) throws IOException {
         this.writeTypeRef(call.type());
         this.writer.write(".");
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaExpression.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaExpression.java
index bbc087d..8bd706f 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaExpression.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaExpression.java
@@ -1,4 +1,4 @@
 package org.zwobble.hobgoblin.compiler.output.lang.java.ast;
 
-public sealed interface JavaExpression permits JavaIntegerLiteral, JavaMethodCall, JavaNewExpression, JavaNullLiteral, JavaRef, JavaStaticMethodCall, JavaStringLiteral {
+public sealed interface JavaExpression permits JavaIntegerLiteral, JavaMethodCall, JavaNewExpression, JavaNullLiteral, JavaRef, JavaStaticFieldAccess, JavaStaticMethodCall, JavaStringLiteral {
 }
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaStaticFieldAccess.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaStaticFieldAccess.java
new file mode 100644
index 0000000..1a405d1
--- /dev/null
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaStaticFieldAccess.java
@@ -0,0 +1,7 @@
+package org.zwobble.hobgoblin.compiler.output.lang.java.ast;
+
+public record JavaStaticFieldAccess(
+    JavaTypeRef type,
+    String fieldName
+) implements JavaExpression {
+}
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 96166b0..426b1c1 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
@@ -625,6 +625,18 @@ public class JavaWriterTests {
         assertThat(string, equalTo("\"hello\""));
     }
 
+    @Test
+    public void staticFieldAccess() throws IOException {
+        var java = new JavaStaticFieldAccess(
+            JavaTypeRef.topLevel(List.of("one"), "Two"),
+            "three"
+        );
+
+        var string = write(writer -> writer.writeExpression(java));
+
+        assertThat(string, equalTo("one.Two.three"));
+    }
+
     @Test
     public void newExpression() throws IOException {
         var java = new JavaNewExpression(
-- 
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