[PATCH] dispatch: unify handling of None returned by a command function
Yuya Nishihara
yuya at tcha.org
Sat May 12 13:09:01 UTC 2018
# HG changeset patch
# User Yuya Nishihara <yuya at tcha.org>
# Date 1526106789 -32400
# Sat May 12 15:33:09 2018 +0900
# Node ID f5d41abf680b6830b21de4aca1c81532eda36d90
# Parent e9c5888025293fc06bc7865e54a11de6b17d12bc
dispatch: unify handling of None returned by a command function
A command function may return None in place of 0 just for convenience, but
dispatch() doesn't need to inherit that property. This patch makes it be
friendly to callers.
diff --git a/mercurial/commandserver.py b/mercurial/commandserver.py
--- a/mercurial/commandserver.py
+++ b/mercurial/commandserver.py
@@ -256,7 +256,7 @@ class server(object):
self.cout, self.cerr)
try:
- ret = (dispatch.dispatch(req) or 0) & 255 # might return None
+ ret = dispatch.dispatch(req) & 255
self.cresult.write(struct.pack('>i', int(ret)))
finally:
# restore old cwd
diff --git a/mercurial/dispatch.py b/mercurial/dispatch.py
--- a/mercurial/dispatch.py
+++ b/mercurial/dispatch.py
@@ -87,7 +87,7 @@ def run():
req = request(pycompat.sysargv[1:])
err = None
try:
- status = dispatch(req) or 0
+ status = dispatch(req)
except error.StdioError as e:
err = e
status = -1
@@ -175,7 +175,7 @@ def _formatargs(args):
return ' '.join(procutil.shellquote(a) for a in args)
def dispatch(req):
- "run the command specified in req.args"
+ """run the command specified in req.args; returns an integer status code"""
if req.ferr:
ferr = req.ferr
elif req.ui:
@@ -208,9 +208,9 @@ def dispatch(req):
msg = _formatargs(req.args)
starttime = util.timer()
- ret = None
+ ret = -1
try:
- ret = _runcatch(req)
+ ret = _runcatch(req) or 0
except error.ProgrammingError as inst:
req.ui.warn(_('** ProgrammingError: %s\n') % inst)
if inst.hint:
diff --git a/tests/test-blackbox.t b/tests/test-blackbox.t
--- a/tests/test-blackbox.t
+++ b/tests/test-blackbox.t
@@ -206,7 +206,7 @@ log rotation
committing changelog
updating the branch cache
committed changeset 0:0e46349438790c460c5c9f7546bfcd39b267bbd2
- result: None
+ result: 0
running: --debug commit -m commit2 -d 2000-01-02 foo
committing files:
foo
@@ -214,7 +214,7 @@ log rotation
committing changelog
updating the branch cache
committed changeset 1:45589e459b2edfbf3dbde7e01f611d2c1e7453d7
- result: None
+ result: 0
running: --debug log -r 0
changeset: 0:0e46349438790c460c5c9f7546bfcd39b267bbd2
phase: draft
@@ -229,7 +229,7 @@ log rotation
commit1
- result: None
+ result: 0
running: --debug log -r tip
changeset: 1:45589e459b2edfbf3dbde7e01f611d2c1e7453d7
tag: tip
@@ -245,7 +245,7 @@ log rotation
commit2
- result: None
+ result: 0
$ hg blackbox
1970/01/01 00:00:00 bob @45589e459b2edfbf3dbde7e01f611d2c1e7453d7 (5000)> updating the branch cache
1970/01/01 00:00:00 bob @45589e459b2edfbf3dbde7e01f611d2c1e7453d7 (5000)> updated served branch cache in * seconds (glob)
diff --git a/tests/test-dispatch.py.out b/tests/test-dispatch.py.out
--- a/tests/test-dispatch.py.out
+++ b/tests/test-dispatch.py.out
@@ -1,18 +1,18 @@
running: init test1
-result: None
+result: 0
running: add foo
result: 0
running: commit -m commit1 -d 2000-01-01 foo
-result: None
+result: 0
running: commit -m commit2 -d 2000-01-02 foo
-result: None
+result: 0
running: log -r 0
changeset: 0:0e4634943879
user: test
date: Sat Jan 01 00:00:00 2000 +0000
summary: commit1
-result: None
+result: 0
running: log -r tip
changeset: 1:45589e459b2e
tag: tip
@@ -20,4 +20,4 @@ user: test
date: Sun Jan 02 00:00:00 2000 +0000
summary: commit2
-result: None
+result: 0
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