# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@octobus.net>
# Date 1676890450 -3600
# Node ID f7981f202b7a9d24476630ee3f75a6fd34ac9d4c
# Parent  cad3a68c0e0cedad7f5fb87a168ae3187fe09af1
dirstate: add a `require_changing_any` decorator

We will need it for a couple of usecase (e.g `dirstate.copy`).

diff -r cad3a68c0e0c -r f7981f202b7a mercurial/dirstate.py
--- a/mercurial/dirstate.py	Mon Feb 20 12:06:03 2023 +0100
+++ b/mercurial/dirstate.py	Mon Feb 20 11:54:10 2023 +0100
@@ -90,6 +90,20 @@
     return wrap
 
 
+def requires_changing_any(func):
+    def wrap(self, *args, **kwargs):
+        if not self.is_changing_any:
+            msg = 'calling `%s` outside of a changing context'
+            msg %= func.__name__
+            raise error.ProgrammingError(msg)
+        if self._invalidated_context:
+            msg = 'calling `%s` after the dirstate was invalidated'
+            raise error.ProgrammingError(msg)
+        return func(self, *args, **kwargs)
+
+    return wrap
+
+
 def requires_not_changing_parents(func):
     def wrap(self, *args, **kwargs):
         if self.is_changing_parents: