Defer inspect.currentframe only used for debugging

virtuald · virtuald · commit e7789a63b1c7 · 2020-11-15T21:17:32.000-05:00
diff --git a/CppHeaderParser/CppHeaderParser.py b/CppHeaderParser/CppHeaderParser.py
@@ -100,6 +100,12 @@ def warning_print(fmt, *args):
 
 if debug:
 
+    class _debug_caller_lineno:
+        def __str__(self):
+            return str(inspect.currentframe().f_back.f_back.f_back.f_lineno)
+
+    debug_caller_lineno = _debug_caller_lineno()
+
     def debug_print(fmt, *args):
         fmt = "[%4d] " + fmt
         args = (inspect.currentframe().f_back.f_lineno,) + args
@@ -108,6 +114,8 @@ def debug_print(fmt, *args):
 
 else:
 
+    debug_caller_lineno = None
+
     def debug_print(fmt, *args):
         pass
 
@@ -3237,10 +3245,10 @@ def _evaluate_stack(self, token=None):
         nameStackCopy = self.nameStack[:]
 
         debug_print(
-            "Evaluating stack %s\n       BraceDepth: %s (called from %d)",
+            "Evaluating stack %s\n       BraceDepth: %s (called from %s)",
             self.nameStack,
             self.braceDepth,
-            inspect.currentframe().f_back.f_lineno,
+            debug_caller_lineno,
         )
 
         # Handle special case of overloading operator ()
