From a6744ed09b49b740dfc2852d655f5ed6dd471cbf Mon Sep 17 00:00:00 2001
From: Li Jin <dragon-fly@qq.com>
Date: Tue, 8 Feb 2022 16:39:20 +0800
Subject: fix a case combining the use of existential op and metatable op.
 raise error when use existential op in the left part in an assignment.

---
 spec/inputs/existential.yue  |  7 +++++++
 spec/outputs/existential.lua | 28 +++++++++++++++++++++++-----
 2 files changed, 30 insertions(+), 5 deletions(-)

(limited to 'spec')

diff --git a/spec/inputs/existential.yue b/spec/inputs/existential.yue
index 3055705..101e1d8 100644
--- a/spec/inputs/existential.yue
+++ b/spec/inputs/existential.yue
@@ -49,3 +49,10 @@ with? io.open "test.txt", "w"
 	\write "hello"
 	\close!
 
+tb?.a#? 123
+
+with? tb.#?.index#
+	.a = 1
+
+nil
+
diff --git a/spec/outputs/existential.lua b/spec/outputs/existential.lua
index 4a64c49..b594218 100644
--- a/spec/outputs/existential.lua
+++ b/spec/outputs/existential.lua
@@ -148,9 +148,27 @@ end)() ~= nil) or (function()
 	end
 	return nil
 end)()
-local _with_0 = io.open("test.txt", "w")
-if _with_0 ~= nil then
-	_with_0:write("hello")
-	_with_0:close()
+do
+	local _with_0 = io.open("test.txt", "w")
+	if _with_0 ~= nil then
+		_with_0:write("hello")
+		_with_0:close()
+	end
+end
+if tb ~= nil then
+	local _obj_1 = getmetatable(tb).__a
+	if _obj_1 ~= nil then
+		_obj_1(123)
+	end
+end
+do
+	local _with_0
+	local _obj_1 = getmetatable(tb)
+	if _obj_1 ~= nil then
+		_with_0 = getmetatable(_obj_1).__index
+	end
+	if _with_0 ~= nil then
+		_with_0.a = 1
+	end
 end
-return _with_0
+return nil
-- 
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