D9350: errors: make ParseError a subtype of Abort

[martinvonz (Martin von Zweigbergk)]

martinvonz created this revision.
Herald added a reviewer: hg-reviewers.
Herald added a subscriber: mercurial-patches.

REVISION SUMMARY
  I didn't plan this before, but the previous two changes made it really
  easy to make `ParseError` a subtype of `Abort`. It seems obvious with
  hindsight that I *should* have planned it :)

REPOSITORY
  rHG Mercurial

BRANCH
  default

REVISION DETAIL
  https://phab.mercurial-scm.org/D9350

AFFECTED FILES
  mercurial/chgserver.py
  mercurial/dispatch.py
  mercurial/error.py

CHANGE DETAILS

diff --git a/mercurial/error.py b/mercurial/error.py
--- a/mercurial/error.py
+++ b/mercurial/error.py
@@ -259,13 +259,12 @@
     __bytes__ = _tobytes
 
 
-class ParseError(Hint, Exception):
+class ParseError(Abort):
     """Raised when parsing config files and {rev,file}sets (msg[, pos])"""
 
     def __init__(self, message, location=None, hint=None):
-        self.message = message
+        super(ParseError, self).__init__(message, hint=hint)
         self.location = location
-        self.hint = hint
         # Pass the message and possibly location into the Exception constructor
         # to help code that looks for exc.args.
         if location is not None:
diff --git a/mercurial/dispatch.py b/mercurial/dispatch.py
--- a/mercurial/dispatch.py
+++ b/mercurial/dispatch.py
@@ -258,9 +258,6 @@
         except error.Abort as inst:
             ferr.write(inst.format())
             return -1
-        except error.ParseError as inst:
-            ferr.write(inst.format())
-            return -1
 
         msg = _formatargs(req.args)
         starttime = util.timer()
@@ -466,9 +463,6 @@
         else:
             ui.warn(_(b"hg: %s\n") % inst.message)
             ui.warn(_(b"(use 'hg help -v' for a list of global options)\n"))
-    except error.ParseError as inst:
-        ui.warn(inst.format())
-        return -1
     except error.UnknownCommand as inst:
         nocmdmsg = _(b"hg: unknown command '%s'\n") % inst.command
         try:
diff --git a/mercurial/chgserver.py b/mercurial/chgserver.py
--- a/mercurial/chgserver.py
+++ b/mercurial/chgserver.py
@@ -506,11 +506,6 @@
         args = self._readlist()
         try:
             self.ui, lui = _loadnewui(self.ui, args, self.cdebug)
-        except error.ParseError as inst:
-            self.ui.warn(inst.format())
-            self.ui.flush()
-            self.cresult.write(b'exit 255')
-            return
         except error.Abort as inst:
             self.ui.error(inst.format())
             self.ui.flush()



To: martinvonz, #hg-reviewers
Cc: mercurial-patches, mercurial-devel