From f3aea758bcab9bbf07cca29d9e705aa112d94bad Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Thu, 2 Nov 2023 19:07:48 +0000
Subject: Allow resume statements without expression

---
 .../java/org/shedlang/compiler/ast/untyped/UntypedResumeNode.java     | 4 +++-
 src/main/java/org/shedlang/compiler/parser/Parser.java                | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

(limited to 'src/main/java')

diff --git a/src/main/java/org/shedlang/compiler/ast/untyped/UntypedResumeNode.java b/src/main/java/org/shedlang/compiler/ast/untyped/UntypedResumeNode.java
index a0eb49e6..45a94451 100644
--- a/src/main/java/org/shedlang/compiler/ast/untyped/UntypedResumeNode.java
+++ b/src/main/java/org/shedlang/compiler/ast/untyped/UntypedResumeNode.java
@@ -2,8 +2,10 @@ package org.shedlang.compiler.ast.untyped;
 
 import org.shedlang.compiler.sources.Source;
 
+import java.util.Optional;
+
 public record UntypedResumeNode(
-    UntypedExpressionNode expression,
+    Optional<UntypedExpressionNode> expression,
     Source source
 ) implements UntypedFunctionStatementNode {
     @Override
diff --git a/src/main/java/org/shedlang/compiler/parser/Parser.java b/src/main/java/org/shedlang/compiler/parser/Parser.java
index 5d4599e1..329a5283 100644
--- a/src/main/java/org/shedlang/compiler/parser/Parser.java
+++ b/src/main/java/org/shedlang/compiler/parser/Parser.java
@@ -829,7 +829,9 @@ public class Parser {
 
         tokens.skip(TokenType.KEYWORD_RESUME);
 
-        var expression = parseTopLevelExpression(tokens);
+        var expression = tokens.isNext(TokenType.SYMBOL_SEMICOLON)
+            ? Optional.<UntypedExpressionNode>empty()
+            : Optional.of(parseTopLevelExpression(tokens));
 
         tokens.skip(TokenType.SYMBOL_SEMICOLON);
 
-- 
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