# HG changeset patch
# User Franz Glasner <f.glasner@feldmann-mg.com>
# Date 1637333521 -3600
# Node ID 3c95faa91dad0beca586b494e2f2d3462b07aa1f
# Parent  dd46257d2b22a7cd6aae36b96dcc9715dac2614c
Optimize the creation of a jailed config.

Allow to skip the binding of the base in case the caller wants to rebind
just after creation anyways.

diff -r dd46257d2b22 -r 3c95faa91dad configmix/config.py
--- a/configmix/config.py	Fri Nov 19 13:37:30 2021 +0100
+++ b/configmix/config.py	Fri Nov 19 15:52:01 2021 +0100
@@ -654,7 +654,7 @@
                 raise ValueError("unknown quote syntax string: {}".format(s))
         return ''.join(res)
 
-    def jailed(self, rootpath=None, root=None):
+    def jailed(self, rootpath=None, root=None, bind_root=True):
         """Return a "jailed" configuration of the current configuration.
 
         :param rootpath: a sequence of strings that shall emcompass
@@ -663,6 +663,10 @@
         :type rootpath: list or tuple
         :param str root: a string path expression that shall encompass
                          the chroot-like jail of the returned configuration
+        :param bool bind_root: if you do a :meth:`~.rebind` just after
+                               creation of a jailed config you can set
+                               `bind_root` to `False`; otherwise use
+                               the default
         :return: a jailed (aka restricted) configuration
         :rtype: _JailedConfiguration
 
@@ -683,8 +687,10 @@
                 self.unquote(p) for p in root.split(
                     self._HIER_SEPARATOR)
             ]
-
-        return _JailedConfiguration(self, *rootpath)
+        jc = _JailedConfiguration(*rootpath)
+        if bind_root:
+            jc.rebind(self)
+        return jc
 
 
 class _JailedConfiguration(object):
@@ -714,7 +720,7 @@
     is_jail = True
     """Flag to show that this is a jail for another configuration"""
 
-    def __init__(self, config, *path):
+    def __init__(self, *path):
         super(_JailedConfiguration, self).__init__()
         self._path = path
         if path:
@@ -724,7 +730,6 @@
                 + Configuration._HIER_SEPARATOR
         else:
             self._pathstr = ''
-        self.rebind(config)
 
     @property
     def base(self):