[PATCH 10 of 16] rebase: move histedit suggestion to a rebase runtime object

[Kostia Balytskyi]

# HG changeset patch
# User Kostia Balytskyi <ikostia at fb.com>
# Date 1464547233 -3600
#      Sun May 29 19:40:33 2016 +0100
# Node ID 44f5af0d5d1057ab359aef0bcd1bc7f8b06376c3
# Parent  97669ad5e4d47a509a636a4e915e189a49f90bc5
rebase: move histedit suggestion to a rebase runtime object

diff --git a/hgext/rebase.py b/hgext/rebase.py
--- a/hgext/rebase.py
+++ b/hgext/rebase.py
@@ -122,6 +122,10 @@
 class RebaseRuntimeState(object):
     """This class is a container for rebase runtime state"""
     def __init__(self, repo, ui, opts):
+        self.repo = repo
+        self.ui = ui
+        self.opts = opts
+
         self.originalwd = None
         self.external = nullrev
         # Mapping between the old revision id and either what is the new rebased
@@ -159,6 +163,18 @@
         # other extensions
         self.keepopen = opts.get('keepopen', False)
 
+    def validateoptions(self):
+        if self.opts.get('interactive'):
+            try:
+                if extensions.find('histedit'):
+                    enablehistedit = ''
+            except KeyError:
+                enablehistedit = " --config extensions.histedit="
+            help = "hg%s help -e histedit" % enablehistedit
+            msg = _("interactive history editing is supported by the "
+                    "'histedit' extension (see \"%s\")") % help
+            raise error.Abort(msg)
+
 @command('rebase',
     [('s', 'source', '',
      _('rebase the specified changeset and descendants'), _('REV')),
@@ -270,23 +286,13 @@
 
     """
     rtstate = RebaseRuntimeState(repo, ui, opts)
+    rtstate.validateoptions()
 
     lock = wlock = None
     try:
         wlock = repo.wlock()
         lock = repo.lock()
 
-        if opts.get('interactive'):
-            try:
-                if extensions.find('histedit'):
-                    enablehistedit = ''
-            except KeyError:
-                enablehistedit = " --config extensions.histedit="
-            help = "hg%s help -e histedit" % enablehistedit
-            msg = _("interactive history editing is supported by the "
-                    "'histedit' extension (see \"%s\")") % help
-            raise error.Abort(msg)
-
         if rtstate.collapsemsg and not rtstate.collapsef:
             raise error.Abort(
                 _('message can only be specified with collapse'))