From 53bd5a32e30493f4915e79bfb63b1eec846f1a7f Mon Sep 17 00:00:00 2001
From: Li Jin <dragon-fly@qq.com>
Date: Wed, 20 Apr 2022 09:19:59 +0800
Subject: add placeholder support for list destructuring. fix part of issue
 #93.

---
 doc/docs/doc/README.md         | 6 +++---
 spec/inputs/destructure.yue    | 3 +++
 spec/outputs/destructure.lua   | 7 +++++++
 src/yuescript/yue_compiler.cpp | 3 ++-
 4 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/doc/docs/doc/README.md b/doc/docs/doc/README.md
index 5c43917..adff569 100755
--- a/doc/docs/doc/README.md
+++ b/doc/docs/doc/README.md
@@ -657,7 +657,7 @@ do
 
 The export statement offers a concise way to define modules.
 
-* **Named Export**
+* **Named Export**  
 Named export will define a local variable as well as adding a field in the exported table.
 
 ```moonscript
@@ -693,7 +693,7 @@ export class Something
 </pre>
 </YueDisplay>
 
-* **Unnamed Export**
+* **Unnamed Export**  
 Unnamed export will add the target item into the array part of the exported table.
 
 ```moonscript
@@ -723,7 +723,7 @@ export with tmp
 </pre>
 </YueDisplay>
 
-* **Default Export**
+* **Default Export**  
 Using the **default** keyword in export statement to replace the exported table with any thing.
 
 ```moonscript
diff --git a/spec/inputs/destructure.yue b/spec/inputs/destructure.yue
index e1c6b27..a235abd 100644
--- a/spec/inputs/destructure.yue
+++ b/spec/inputs/destructure.yue
@@ -178,3 +178,6 @@ do
 	for {left = "null", right = false} in *tuples
 		print left, right
 
+do
+	{_, a, _, b} = tb -- list placeholder
+
diff --git a/spec/outputs/destructure.lua b/spec/outputs/destructure.lua
index 1862b85..9b16181 100644
--- a/spec/outputs/destructure.lua
+++ b/spec/outputs/destructure.lua
@@ -358,3 +358,10 @@ do
 		print(left, right)
 	end
 end
+do
+	local a, b
+	do
+		local _obj_0 = tb
+		a, b = _obj_0[2], _obj_0[4]
+	end
+end
diff --git a/src/yuescript/yue_compiler.cpp b/src/yuescript/yue_compiler.cpp
index e7da2dd..17fbaf6 100755
--- a/src/yuescript/yue_compiler.cpp
+++ b/src/yuescript/yue_compiler.cpp
@@ -60,7 +60,7 @@ using namespace parserlib;
 
 typedef std::list<std::string> str_list;
 
-const std::string_view version = "0.10.11"sv;
+const std::string_view version = "0.10.12"sv;
 const std::string_view extension = "yue"sv;
 
 class YueCompilerImpl {
@@ -1597,6 +1597,7 @@ private:
 						_config.lintGlobalVariable = false;
 						auto exp = static_cast<Exp_t*>(pair);
 						auto varName = singleVariableFrom(exp);
+						if (varName == "_"sv) break;
 						bool isVariable = !varName.empty();
 						if (!isVariable) {
 							str_list temp;
-- 
cgit v1.2.3-55-g6feb