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Re: [Qemu-devel] [PATCH 1/3] tracetool: prefix parse errors with line nu
From: |
Eric Blake |
Subject: |
Re: [Qemu-devel] [PATCH 1/3] tracetool: prefix parse errors with line numbers |
Date: |
Wed, 10 Jan 2018 14:47:57 -0600 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 |
On 01/10/2018 02:25 PM, Stefan Hajnoczi wrote:
> Include the file line number in the message that is printed when
> trace-events parse errors are raised.
>
> Suggested-by: Dr. David Alan Gilbert <address@hidden>
> Signed-off-by: Stefan Hajnoczi <address@hidden>
> ---
> scripts/tracetool/__init__.py | 9 +++++++--
> 1 file changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/scripts/tracetool/__init__.py b/scripts/tracetool/__init__.py
> index 0670ec17d5..fbccaaa0cf 100644
> --- a/scripts/tracetool/__init__.py
> +++ b/scripts/tracetool/__init__.py
> @@ -300,13 +300,18 @@ def read_events(fobj):
> """
>
> events = []
> - for line in fobj:
> + for lineno, line in enumerate(fobj):
If you use enumerate(fobj, 1) here...
> if not line.strip():
> continue
> if line.lstrip().startswith('#'):
> continue
>
> - event = Event.build(line)
> + try:
> + event = Event.build(line)
> + except ValueError as e:
> + arg0 = 'Error on line %d: %s' % (lineno + 1, e.args[0])
you could avoid the +1 here.
Up to you; either way, the patch is an improvement.
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
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- [Qemu-devel] [PATCH 0/3] tracetool: improve error messages, Stefan Hajnoczi, 2018/01/10
- [Qemu-devel] [PATCH 1/3] tracetool: prefix parse errors with line numbers, Stefan Hajnoczi, 2018/01/10
- Re: [Qemu-devel] [PATCH 1/3] tracetool: prefix parse errors with line numbers,
Eric Blake <=
- [Qemu-devel] [PATCH 3/3] tracetool: report error on foo() instead of foo(void), Stefan Hajnoczi, 2018/01/10
- [Qemu-devel] [PATCH 2/3] tracetool: clarify that "formats" means "format strings", Stefan Hajnoczi, 2018/01/10
- Re: [Qemu-devel] [PATCH 0/3] tracetool: improve error messages, Eric Blake, 2018/01/10
- Re: [Qemu-devel] [PATCH 0/3] tracetool: improve error messages, no-reply, 2018/01/10
- Re: [Qemu-devel] [PATCH 0/3] tracetool: improve error messages, Stefan Hajnoczi, 2018/01/15