fix an empty check case.v0.21.8

1 files changed, 17 insertions, 9 deletions

diff --git a/src/yuescript/yue_compiler.cpp b/src/yuescript/yue_compiler.cpp
index 5cdbfda..30800e6 100644
--- a/src/yuescript/yue_compiler.cpp
+++ b/src/yuescript/yue_compiler.cpp
@@ -75,7 +75,7 @@ static std::unordered_set<std::string> Metamethods = {
         "close"s // Lua 5.4
 };
 
-const std::string_view version = "0.21.7"sv;
+const std::string_view version = "0.21.8"sv;
 const std::string_view extension = "yue"sv;
 
 class CompileError : public std::logic_error {
@@ -6162,10 +6162,14 @@ private:
                                 if (unary_exp->inExp->not_) {
                                         _buf << "not ("sv;
                                 }
-                                for (const auto& exp : tmp) {
-                                        _buf << exp << " == "sv << newVar;
-                                        if (exp != tmp.back()) {
-                                                _buf << " or "sv;
+                                if (tmp.empty()) {
+                                        _buf << "false"sv;
+                                } else {
+                                        for (const auto& exp : tmp) {
+                                                _buf << exp << " == "sv << newVar;
+                                                if (exp != tmp.back()) {
+                                                        _buf << " or "sv;
+                                                }
                                         }
                                 }
                                 if (unary_exp->inExp->not_) {
@@ -6203,10 +6207,14 @@ private:
                                         _buf << "not "sv;
                                 }
                                 _buf << '(';
-                                for (const auto& exp : tmp) {
-                                        _buf << exp << " == "sv << varName;
-                                        if (exp != tmp.back()) {
-                                                _buf << " or "sv;
+                                if (tmp.empty()) {
+                                        _buf << "false"sv;
+                                } else {
+                                        for (const auto& exp : tmp) {
+                                                _buf << exp << " == "sv << varName;
+                                                if (exp != tmp.back()) {
+                                                        _buf << " or "sv;
+                                                }
                                         }
                                 }
                                 _buf << ')';