From 8dc5c03a23d1ab5f07848bbc217059de96eed30a Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Fri, 3 Jul 2026 12:14:30 +0100
Subject: Add expression statements to Rust AST

---
 .../compiler/output/lang/rust/RustWriter.java      | 15 ++++++++++
 .../lang/rust/ast/RustExpressionStatement.java     | 32 ++++++++++++++++++++++
 .../output/lang/rust/ast/RustStatement.java        | 18 ++++++++++++
 3 files changed, 65 insertions(+)
 create mode 100644 src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustExpressionStatement.java
 create mode 100644 src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustStatement.java

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

diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/RustWriter.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/RustWriter.java
index 299a8b5..23643a6 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/RustWriter.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/RustWriter.java
@@ -202,6 +202,21 @@ public class RustWriter implements AutoCloseable {
         this.writer.write("}");
     }
 
+    // == Statements ==
+
+    void writeStatement(RustStatement statement) throws IOException {
+        switch (statement) {
+            case RustExpressionStatement expressionStatement -> {
+                this.writeExpressionStatement(expressionStatement);
+            }
+        }
+    }
+
+    private void writeExpressionStatement(RustExpressionStatement expressionStatement) throws IOException {
+        this.writeExpression(expressionStatement.expression());
+        this.writer.write(";");
+    }
+
     // == Expressions ==
 
     void writeExpression(RustExpression expression) throws IOException {
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustExpressionStatement.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustExpressionStatement.java
new file mode 100644
index 0000000..3083b79
--- /dev/null
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustExpressionStatement.java
@@ -0,0 +1,32 @@
+// Generated by hobgoblin.
+
+package org.zwobble.hobgoblin.compiler.output.lang.rust.ast;
+
+// Custom area start: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpressionStatement imports
+// Custom area end: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpressionStatement imports
+
+public record RustExpressionStatement(org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpression expression) implements org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustStatement {
+    public static org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpressionStatement.Builder arbitrary() {
+        return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpressionStatement.Builder(org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustBoolLiteral.arbitrary().build());
+    }
+
+    public record Builder(org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpression expression) implements org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustStatement.Builder {
+        public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpressionStatement build() {
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpressionStatement(expression);
+        }
+
+        public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpressionStatement.Builder withExpression(org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpression expression) {
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpressionStatement.Builder(expression);
+        }
+
+        public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpressionStatement.Builder withExpression(org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpression.Builder expression) {
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpressionStatement.Builder(expression.build());
+        }
+
+        // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpressionStatement.Builder body
+        // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpressionStatement.Builder body
+    }
+
+    // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpressionStatement body
+    // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpressionStatement body
+}
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustStatement.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustStatement.java
new file mode 100644
index 0000000..0e49c03
--- /dev/null
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustStatement.java
@@ -0,0 +1,18 @@
+// Generated by hobgoblin.
+
+package org.zwobble.hobgoblin.compiler.output.lang.rust.ast;
+
+// Custom area start: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustStatement imports
+// Custom area end: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustStatement imports
+
+public sealed interface RustStatement permits org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustExpressionStatement {
+    public interface Builder {
+        public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustStatement build();
+
+        // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustStatement.Builder body
+        // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustStatement.Builder body
+    }
+
+    // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustStatement body
+    // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustStatement body
+}
-- 
cgit v1.2.3