1 files changed, 30 insertions, 46 deletions

diff --git a/src/yuescript/yue_compiler.cpp b/src/yuescript/yue_compiler.cpp
index f2a0b8c..e812960 100755
--- a/src/yuescript/yue_compiler.cpp
+++ b/src/yuescript/yue_compiler.cpp
@@ -34,6 +34,10 @@ extern "C" {
         #endif // LUA_COMPAT_5_1
 #endif // LUA_VERSION_NUM
 
+#if LUA_VERSION_NUM < 504
+        #define YUE_NO_ATTRIB
+#endif // LUA_VERSION_NUM
+
 #endif // YUE_NO_MACRO
 
 namespace yue {
@@ -56,7 +60,7 @@ using namespace parserlib;
 
 typedef std::list<std::string> str_list;
 
-const std::string_view version = "0.8.1"sv;
+const std::string_view version = "0.8.2"sv;
 const std::string_view extension = "yue"sv;
 
 class YueCompilerImpl {
@@ -6252,58 +6256,38 @@ private:
                 if (attrib != "close"sv && attrib != "const"sv) {
                         throw std::logic_error(_info.errorMessage("unknown attribute '"s + attrib + '\'', localAttrib->attrib));
                 }
+                str_list vars;
+                for (auto name : localAttrib->nameList->names.objects()) {
+                        auto var = _parser.toString(name);
+                        forceAddToScope(var);
+                        vars.push_back(var);
+                }
+#ifdef YUE_NO_ATTRIB
                 if (attrib == "const"sv) {
-                        str_list vars;
-                        for (auto name : localAttrib->nameList->names.objects()) {
-                                vars.push_back(_parser.toString(name));
-                                forceAddToScope(vars.back());
-                        }
-                        str_list temp;
-                        auto varStr = join(vars, ", "sv);
-                        temp.push_back(indent() + "local "s + varStr + nll(x));
-                        auto varList = toAst<ExpList_t>(varStr, x);
-                        auto assignment = x->new_ptr<ExpListAssign_t>();
-                        assignment->expList.set(varList);
-                        assignment->action.set(localAttrib->assign);
-                        transformAssignment(assignment, temp);
-                        for (const auto& var : vars) {
+                        for (auto& var : vars) {
                                 markVarConst(var);
                         }
-                        out.push_back(join(temp));
-                        return;
+                } else {
+                        throw std::logic_error(_info.errorMessage("attribute '"s + attrib + "' is not supported", localAttrib->attrib));
                 }
-                auto expList = x->new_ptr<ExpList_t>();
-                str_list tmpVars;
-                str_list vars;
-                pushScope();
-                for (auto name : localAttrib->nameList->names.objects()) {
-                        auto callable = x->new_ptr<Callable_t>();
-                        callable->item.set(name);
-                        auto chainValue = x->new_ptr<ChainValue_t>();
-                        chainValue->items.push_back(callable);
-                        auto value = x->new_ptr<Value_t>();
-                        value->item.set(chainValue);
-                        auto exp = newExp(value, x);
-                        expList->exprs.push_back(exp);
-                        tmpVars.push_back(getUnusedName("_var_"sv));
-                        addToScope(tmpVars.back());
-                        vars.push_back(_parser.toString(name));
+#else // YUE_NO_ATTRIB
+                attrib = " <"s + attrib + '>';
+                if (attrib == "<const>"sv) {
+                        for (auto& var : vars) {
+                                markVarConst(var);
+                                var.append(attrib);
+                        }
+                } else {
+                        for (auto& var : vars) {
+                                var.append(attrib);
+                        }
                 }
-                popScope();
-                auto tmpVarStr = join(tmpVars, ", "sv);
-                auto tmpVarList = toAst<ExpList_t>(tmpVarStr, x);
-                auto assignment = x->new_ptr<ExpListAssign_t>();
-                assignment->expList.set(tmpVarList);
-                assignment->action.set(localAttrib->assign);
+#endif // YUE_NO_ATTRIB
                 str_list temp;
-                transformAssignment(assignment, temp);
-                attrib = " <"s + attrib + '>';
-                for (auto& var : vars) {
-                        forceAddToScope(var);
-                        var.append(attrib);
+                for (auto item : localAttrib->assign->values.objects()) {
+                        transformAssignItem(item, temp);
                 }
-                temp.push_back(indent() + "local "s + join(vars, ", "sv) + " = "s + tmpVarStr + nll(x));
-                out.push_back(join(temp));
+                out.push_back(indent() + "local "s + join(vars, ", "sv) + " = "s + join(temp, ", "sv) + nll(x));
         }
 
         void transformBreakLoop(BreakLoop_t* breakLoop, str_list& out) {