4 files changed, 115 insertions, 38 deletions

diff --git a/doc/package.json b/doc/package.json
index 0784500..f9e5ebf 100755
--- a/doc/package.json
+++ b/doc/package.json
@@ -9,8 +9,8 @@
   },
   "repository": "https://github.com/pigpigyyy/Yuescript/doc",
   "scripts": {
-    "dev": "vuepress dev docs",
-    "build": "vuepress build docs"
+    "dev": "export NODE_OPTIONS=--openssl-legacy-provider && vuepress dev docs",
+    "build": "export NODE_OPTIONS=--openssl-legacy-provider && vuepress build docs"
   },
   "license": "MIT",
   "devDependencies": {
diff --git a/spec/inputs/in_expression.yue b/spec/inputs/in_expression.yue
index 4080016..6e923e1 100644
--- a/spec/inputs/in_expression.yue
+++ b/spec/inputs/in_expression.yue
@@ -39,7 +39,14 @@ do
         not_exist = item not in list
         check item in list
         check item in {1, 2, 3}
-        check item in {[1]: 1, [2]: 2, [3]: 3}
+        check item(...) in {[1]: 1, [2]: 2, [3]: 3}
+
+do
+        check -> x in tb
+        check -> x not in tb
+        local x, tb
+        check -> return x in tb
+        check -> x not in tb
 
 nil
 
diff --git a/spec/outputs/in_expression.lua b/spec/outputs/in_expression.lua
index ccc5fd0..ddba69a 100644
--- a/spec/outputs/in_expression.lua
+++ b/spec/outputs/in_expression.lua
@@ -66,15 +66,19 @@ do
 end
 do
         local item = get()
-        local exist = (function()
+        local exist
+        do
                 local _check_0 = list
+                local _find_0 = false
                 for _index_0 = 1, #_check_0 do
-                        if _check_0[_index_0] == item then
-                                return true
+                        local _item_0 = _check_0[_index_0]
+                        if _item_0 == item then
+                                _find_0 = true
+                                break
                         end
                 end
-                return false
-        end)()
+                exist = _find_0
+        end
         check((function()
                 local _check_0 = list
                 for _index_0 = 1, #_check_0 do
@@ -92,14 +96,18 @@ do
                 2,
                 3
         }
-        local not_exist = not (#list > 0 and (function()
+        local not_exist
+        do
+                local _find_0 = false
                 for _index_0 = 1, #list do
-                        if list[_index_0] == item then
-                                return true
+                        local _item_0 = list[_index_0]
+                        if _item_0 == item then
+                                _find_0 = true
+                                break
                         end
                 end
-                return false
-        end)())
+                not_exist = not _find_0
+        end
         check((#list > 0 and (function()
                 for _index_0 = 1, #list do
                         if list[_index_0] == item then
@@ -109,18 +117,58 @@ do
                 return false
         end)()))
         check((1 == item or 2 == item or 3 == item))
-        check((function()
+        check((function(...)
                 local _check_0 = {
                         [1] = 1,
                         [2] = 2,
                         [3] = 3
                 }
+                local _val_0 = item(...)
                 for _index_0 = 1, #_check_0 do
-                        if _check_0[_index_0] == item then
+                        if _check_0[_index_0] == _val_0 then
                                 return true
                         end
                 end
                 return false
-        end)())
+        end)(...))
+end
+do
+        check(function()
+                local _check_0 = tb
+                local _val_0 = x
+                for _index_0 = 1, #_check_0 do
+                        if _check_0[_index_0] == _val_0 then
+                                return true
+                        end
+                end
+                return false
+        end)
+        check(function()
+                local _check_0 = tb
+                local _val_0 = x
+                for _index_0 = 1, #_check_0 do
+                        if _check_0[_index_0] == _val_0 then
+                                return false
+                        end
+                end
+                return true
+        end)
+        local x, tb
+        check(function()
+                for _index_0 = 1, #tb do
+                        if tb[_index_0] == x then
+                                return true
+                        end
+                end
+                return false
+        end)
+        check(function()
+                for _index_0 = 1, #tb do
+                        if tb[_index_0] == x then
+                                return false
+                        end
+                end
+                return true
+        end)
 end
 return nil
diff --git a/src/yuescript/yue_compiler.cpp b/src/yuescript/yue_compiler.cpp
index bb715d2..09da047 100644
--- a/src/yuescript/yue_compiler.cpp
+++ b/src/yuescript/yue_compiler.cpp
@@ -72,7 +72,7 @@ static std::unordered_set<std::string> Metamethods = {
         "close"s // Lua 5.4
 };
 
-const std::string_view version = "0.17.7"sv;
+const std::string_view version = "0.17.8"sv;
 const std::string_view extension = "yue"sv;
 
 class CompileError : public std::logic_error {
@@ -1161,6 +1161,9 @@ private:
                 auto unary = static_cast<UnaryExp_t*>(exp->pipeExprs.back());
                 BREAK_IF(unary->expos.size() != 1);
                 BREAK_IF(!unary->inExp);
+                if (unary->inExp->item.is<Exp_t>()) {
+                        return unary;
+                }
                 auto value = static_cast<Value_t*>(unary->expos.back());
                 auto varName = singleVariableFrom(value, false);
                 if (varName.empty() || !isLocal(varName)) {
@@ -5416,7 +5419,11 @@ private:
                                         _buf << "\tif "sv << itemVar << "=="sv << varName << '\n';
                                         _buf << "\t\t"sv << findVar << "=true\n"sv;
                                         _buf << "\t\tbreak\n"sv;
-                                        _buf << findVar;
+                                        if (unary_exp->inExp->not_) {
+                                                _buf << "not "sv << findVar;
+                                        } else {
+                                                _buf << findVar;
+                                        }
                                         auto blockStr = clearBuf();
                                         auto checkBlock = toAst<Block_t>(blockStr, inExp);
                                         block->statements.dup(checkBlock->statements);
@@ -5437,30 +5444,44 @@ private:
                                         out.push_back(join(temp));
                                         return;
                                 } else {
-                                        pushFunctionScope();
-                                        pushAnonVarArg();
-                                        pushScope();
-                                        auto arrayCheck = [&]() {
+                                        auto arrayCheck = [&](bool exist) {
                                                 auto indexVar = getUnusedName("_index_");
                                                 _buf << indent() << "for "sv << indexVar << " = 1, #"sv << checkVar << " do"sv << nll(x);
                                                 incIndentOffset();
                                                 _buf << indent() << "if "sv << checkVar << '[' << indexVar << "] == "sv << varName << " then"sv << nll(x);
                                                 incIndentOffset();
-                                                _buf << indent() << "return true"sv << nll(x);
+                                                _buf << indent() << "return "sv << (exist ? "true"sv : "false"sv) << nll(x);
                                                 decIndentOffset();
                                                 _buf << indent() << "end"sv << nll(x);
                                                 decIndentOffset();
                                                 _buf << indent() << "end"sv << nll(x);
-                                                _buf << indent() << "return false"sv << nll(x);
+                                                _buf << indent() << "return "sv << (exist ? "false"sv : "true"sv) << nll(x);
                                                 temp.push_back(clearBuf());
                                         };
-                                        bool useShortCheck = !varName.empty() && !checkVar.empty() && isLocal(checkVar);
+                                        bool useShortCheck = (usage == ExpUsage::Closure) && !varName.empty() && !checkVar.empty() && isLocal(checkVar);
                                         if (useShortCheck) {
-                                                arrayCheck();
-                                                temp.push_front("(#"s + checkVar + " > 0 and "s + anonFuncStart() + nll(x));
-                                                popScope();
-                                                temp.push_back(indent() + anonFuncEnd() + ')');
+                                                if (usage == ExpUsage::Return) {
+                                                        arrayCheck(!unary_exp->inExp->not_);
+                                                } else {
+                                                        pushFunctionScope();
+                                                        pushAnonVarArg();
+                                                        pushScope();
+                                                        arrayCheck(true);
+                                                        temp.push_front("(#"s + checkVar + " > 0 and "s + anonFuncStart() + nll(x));
+                                                        popScope();
+                                                        temp.push_back(indent() + anonFuncEnd() + ')');
+                                                        if (unary_exp->inExp->not_) {
+                                                                temp.front().insert(0, "not "s);
+                                                        }
+                                                        popAnonVarArg();
+                                                        popFunctionScope();
+                                                }
                                         } else {
+                                                if (usage == ExpUsage::Closure) {
+                                                        pushFunctionScope();
+                                                        pushAnonVarArg();
+                                                        pushScope();
+                                                }
                                                 if (checkVar.empty() || !isLocal(checkVar)) {
                                                         checkVar = getUnusedName("_check_"sv);
                                                         auto assignment = assignmentFrom(toAst<Exp_t>(checkVar, inExp), inExp, inExp);
@@ -5476,15 +5497,16 @@ private:
                                                         auto assignment = assignmentFrom(assignExp, exp, x);
                                                         transformAssignment(assignment, temp);
                                                 }
-                                                arrayCheck();
-                                                temp.push_front(anonFuncStart() + nll(x));
-                                                popScope();
-                                                temp.push_back(indent() + anonFuncEnd());
-                                        }
-                                        popAnonVarArg();
-                                        popFunctionScope();
-                                        if (unary_exp->inExp->not_) {
-                                                temp.front().insert(0, "not "s);
+                                                if (usage == ExpUsage::Return) {
+                                                        arrayCheck(!unary_exp->inExp->not_);
+                                                } else {
+                                                        arrayCheck(!unary_exp->inExp->not_);
+                                                        temp.push_front(anonFuncStart() + nll(x));
+                                                        popScope();
+                                                        temp.push_back(indent() + anonFuncEnd());
+                                                        popAnonVarArg();
+                                                        popFunctionScope();
+                                                }
                                         }
                                         out.push_back(join(temp));
                                         return;