From baedf99f635735c50936bb555e4a77058ec9e2e0 Mon Sep 17 00:00:00 2001
From: Tom Willemse <tom@ryuslash.org>
Date: Tue, 22 Mar 2022 16:45:48 -0700
Subject: [PATCH] Chapter 24.6

---
 clox/src/compiler.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/clox/src/compiler.c b/clox/src/compiler.c
index ea40d7e..b1e4811 100644
--- a/clox/src/compiler.c
+++ b/clox/src/compiler.c
@@ -444,6 +444,20 @@ static void printStatement() {
   emitByte(OP_PRINT);
 }
 
+static void returnStatement() {
+  if (current->type == TYPE_SCRIPT) {
+    error("Can't return from top-level code.");
+  }
+
+  if (match(TOKEN_SEMICOLON)) {
+    emitReturn();
+  } else {
+    expression();
+    consume(TOKEN_SEMICOLON, "Expect ';' after return value.");
+    emitByte(OP_RETURN);
+  }
+}
+
 static void whileStatement() {
   int loopStart = currentChunk()->count;
   consume(TOKEN_LEFT_PAREN, "Expect '(' after 'while'.");
@@ -503,6 +517,8 @@ static void statement() {
     forStatement();
   } else if (match(TOKEN_IF)) {
     ifStatement();
+  } else if (match(TOKEN_RETURN)) {
+    returnStatement();
   } else if (match(TOKEN_WHILE)) {
     whileStatement();
   } else if (match(TOKEN_LEFT_BRACE)) {