From 5e1f0afc5df421766f2a1aab0a8f2a50992e1064 Mon Sep 17 00:00:00 2001
From: pikastech <liang6516@outlook.com>
Date: Mon, 11 Jul 2022 23:32:30 +0800
Subject: [PATCH] create LST when input tuple

---
 port/linux/test/parse-test.cpp | 16 ++++++++++++++++
 src/PikaVM.c                   |  9 +++++++--
 src/PikaVersion.h              |  2 +-
 3 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/port/linux/test/parse-test.cpp b/port/linux/test/parse-test.cpp
index 0fdb3638d..37383acd6 100644
--- a/port/linux/test/parse-test.cpp
+++ b/port/linux/test/parse-test.cpp
@@ -3538,3 +3538,19 @@ TEST(parser, branket_issue4) {
     EXPECT_EQ(pikaMemNow(), 0);
 }
 #endif
+
+TEST(parser, tuple1) {
+    pikaMemInfo.heapUsedMax = 0;
+    Args* buffs = New_strBuff();
+    char* lines = "(a,b)\n";
+    __platform_printf("%s\n", lines);
+    char* pikaAsm = Parser_multiLineToAsm(buffs, lines);
+    __platform_printf("%s", pikaAsm);
+    EXPECT_STREQ(pikaAsm,
+                 "B0\n"
+                 "1 REF a\n"
+                 "1 REF b\n"
+                 "0 RUN\n");
+    args_deinit(buffs);
+    EXPECT_EQ(pikaMemNow(), 0);
+}
diff --git a/src/PikaVM.c b/src/PikaVM.c
index 0b804b471..237415177 100644
--- a/src/PikaVM.c
+++ b/src/PikaVM.c
@@ -686,9 +686,14 @@ static Arg* VM_instruction_handler_RUN(PikaObj* self, VMState* vs, char* data) {
         vs->try_error_code == TRY_STATE_INNER) {
         sub_try_info.try_state = TRY_STATE_INNER;
     }
-    /* return arg directly */
     if (strEqu(data, "")) {
-        return_arg = stack_popArg(&(vs->stack));
+        if (VMState_getInputArgNum(vs) < 2) {
+            /* return arg directly */
+            return_arg = stack_popArg(&(vs->stack));
+            goto exit;
+        }
+        /* create a tuple */
+        return_arg = VM_instruction_handler_LST(self, vs, "");
         goto exit;
     }
     /* return tiny obj */
diff --git a/src/PikaVersion.h b/src/PikaVersion.h
index 480cf65ca..7f1c3cb62 100644
--- a/src/PikaVersion.h
+++ b/src/PikaVersion.h
@@ -2,4 +2,4 @@
 #define PIKA_VERSION_MINOR       9
 #define PIKA_VERSION_MICRO       0
 
-#define PIKA_EDIT_TIME      "2022/07/11 16:37:09"
+#define PIKA_EDIT_TIME      "2022/07/11 23:32:26"