From 9dfbe7eec5d28f59e32882e6f99c03153fbe2ab8 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Sun, 25 Oct 2026 09:38:14 +0000
Subject: Parse return statement

---
 .../compiler/ast/untyped/UntypedReturnNode.java    | 42 ++++++++++++++++++++++
 .../compiler/ast/untyped/UntypedStatementNode.java | 18 ++++++++++
 .../zwobble/hobgoblin/compiler/parser/Parser.java  | 23 ++++++++++++
 3 files changed, 83 insertions(+)
 create mode 100644 src/main/java/org/zwobble/hobgoblin/compiler/ast/untyped/UntypedReturnNode.java
 create mode 100644 src/main/java/org/zwobble/hobgoblin/compiler/ast/untyped/UntypedStatementNode.java

(limited to 'src/main/java')

diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/ast/untyped/UntypedReturnNode.java b/src/main/java/org/zwobble/hobgoblin/compiler/ast/untyped/UntypedReturnNode.java
new file mode 100644
index 0000000..f115b24
--- /dev/null
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/ast/untyped/UntypedReturnNode.java
@@ -0,0 +1,42 @@
+// Generated by hobgoblin.
+
+package org.zwobble.hobgoblin.compiler.ast.untyped;
+
+// Custom area start: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReturnNode imports
+// Custom area end: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReturnNode imports
+
+public record UntypedReturnNode(
+    org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode expression,
+    org.zwobble.hobgoblin.compiler.sources.Source source
+) implements org.zwobble.hobgoblin.compiler.ast.untyped.UntypedStatementNode {
+    public static org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReturnNode.Builder arbitrary() {
+        return new org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReturnNode.Builder(org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReferenceNode.arbitrary().build(), org.zwobble.hobgoblin.compiler.sources.HobgoblinNativeSources.arbitrarySource());
+    }
+
+    public record Builder(
+        org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode expression,
+        org.zwobble.hobgoblin.compiler.sources.Source source
+    ) implements org.zwobble.hobgoblin.compiler.ast.untyped.UntypedStatementNode.Builder {
+        public org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReturnNode build() {
+            return new org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReturnNode(expression, source);
+        }
+
+        public org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReturnNode.Builder withExpression(org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode expression) {
+            return new org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReturnNode.Builder(expression, source);
+        }
+
+        public org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReturnNode.Builder withExpression(org.zwobble.hobgoblin.compiler.ast.untyped.UntypedExpressionNode.Builder expression) {
+            return new org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReturnNode.Builder(expression.build(), source);
+        }
+
+        public org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReturnNode.Builder withSource(org.zwobble.hobgoblin.compiler.sources.Source source) {
+            return new org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReturnNode.Builder(expression, source);
+        }
+
+        // Custom area start: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReturnNode.Builder body
+        // Custom area end: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReturnNode.Builder body
+    }
+
+    // Custom area start: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReturnNode body
+    // Custom area end: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReturnNode body
+}
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/ast/untyped/UntypedStatementNode.java b/src/main/java/org/zwobble/hobgoblin/compiler/ast/untyped/UntypedStatementNode.java
new file mode 100644
index 0000000..8121f93
--- /dev/null
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/ast/untyped/UntypedStatementNode.java
@@ -0,0 +1,18 @@
+// Generated by hobgoblin.
+
+package org.zwobble.hobgoblin.compiler.ast.untyped;
+
+// Custom area start: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedStatementNode imports
+// Custom area end: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedStatementNode imports
+
+public sealed interface UntypedStatementNode permits org.zwobble.hobgoblin.compiler.ast.untyped.UntypedReturnNode {
+    public interface Builder {
+        public org.zwobble.hobgoblin.compiler.ast.untyped.UntypedStatementNode build();
+
+        // Custom area start: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedStatementNode.Builder body
+        // Custom area end: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedStatementNode.Builder body
+    }
+
+    // Custom area start: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedStatementNode body
+    // Custom area end: org.zwobble.hobgoblin.compiler.ast.untyped.UntypedStatementNode body
+}
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/parser/Parser.java b/src/main/java/org/zwobble/hobgoblin/compiler/parser/Parser.java
index e15e97a..7200ebd 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/parser/Parser.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/parser/Parser.java
@@ -458,6 +458,29 @@ public class Parser {
         );
     }
 
+    // == Statements ==
+
+    static UntypedStatementNode parseStatement(TokenIterator tokens) {
+        if (tokens.isNext(TokenType.IDENTIFIER, "return")) {
+            return parseReturn(tokens);
+        } else {
+            throw new UnsupportedOperationException("TODO");
+        }
+    }
+
+    private static UntypedReturnNode parseReturn(TokenIterator tokens) {
+        var start = tokens.startPosition();
+
+        tokens.skip(TokenType.IDENTIFIER, "return");
+        var expression = parseTopLevelExpression(tokens);
+        tokens.skip(TokenType.SYMBOL_SEMICOLON);
+
+        var end = tokens.endPosition();
+        var source = createSource(start, end);
+
+        return new UntypedReturnNode(expression, source);
+    }
+
     // == Expressions ==
 
     static UntypedExpressionNode parseTopLevelExpression(TokenIterator tokens) {
-- 
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