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From: | Eric Blake |
Subject: | Re: [Qemu-devel] [PATCH v2 41/60] json: Nicer recovery from invalid leading zero |
Date: | Fri, 17 Aug 2018 11:03:21 -0500 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 |
On 08/17/2018 10:05 AM, Markus Armbruster wrote:
For input 0123, the lexer produces the tokens JSON_ERROR 01 JSON_INTEGER 23 Reporting an error is correct; 0123 is invalid according to RFC 7159. But the error recovery isn't nice. Make the finite state machine eat digits before going into the error state. The lexer now produces JSON_ERROR 0123 Signed-off-by: Markus Armbruster <address@hidden> Reviewed-by: Eric Blake <address@hidden>
Did you also want to reject invalid attempts at hex numbers, by adding [xXa-fA-F] to the set of characters eaten by IN_BAD_ZERO?
+ [IN_BAD_ZERO] = {+ ['0' ... '9'] = IN_BAD_ZERO, + }, +
-- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3266 Virtualization: qemu.org | libvirt.org
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