fix

MistEO · Dec 26, 2023 · 515cd87 · 515cd87
1 parent 04c7a3c
commit 515cd87
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/include/json5.hpp b/include/json5.hpp
@@ -70,8 +70,16 @@ class parser5
 public:
     std::string exceptionDetailInfo()
     {
+        size_t start_point = _col;
+        auto len = _print_len;
+        auto current_line = _line_begin_cur;
         std::stringstream ss;
         ss << "at line " << _line << ", column " << _col + 1 << '\n';
+
+        while (read() != '\n' && _cur != _end && (_col - start_point) < 5)
+            ;
+        ss << std::string(current_line, _cur) << '\n';
+        ss << std::setw(len) << '^' << '\n';
         return ss.str();
     }
 
@@ -771,6 +779,9 @@ inline typename parser5<StringT>::u8char parser5<StringT>::read()
     if (len > 0) {
         _print_len += (std::min)(len, 2_sz);
         _cur += len;
+        if (_cur > _end) {
+            _cur = _end;
+        }
     }
     return _current_char;
 }