From: "Basil L. Contovounesios" <contovob@tcd.ie>
To: "T.V Raman" <raman@google.com>
Cc: Noam Postavsky <npostavs@gmail.com>,
Emacs developers <emacs-devel@gnu.org>
Subject: Re: JSON Parsing Edge Case
Date: Fri, 11 May 2018 09:45:35 +0100 [thread overview]
Message-ID: <87bmdmbmxc.fsf@tcd.ie> (raw)
In-Reply-To: <p91in7uexff.fsf@google.com> (T.V Raman's message of "Thu, 10 May 2018 19:30:28 -0700")
"T.V Raman" <raman@google.com> writes:
> Noam Postavsky <npostavs@gmail.com> writes:
>
> I meant json-read-string --apologies. json-parse-buffer needs the
> underlying emacs to be compiled with the json C module.
>> On 10 May 2018 at 19:48, T.V Raman <raman@google.com> wrote:
>>> The following happens with both json-read -- the elisp implementation
>>> as well as json-parse-string implemented in C --
>>>
>>> Try this json fragment -- by typing it into an empty buffer:
>>>
>>> {"quote": "1"}
>>>
>>> The above is a json dict with one key -- "quote" -- with value 1.
>>>
>>> Parsing this into an emacs alist -- either with (json-read) or
>>> (json-parse-buffer)
>>> yields the following lisp structure --
>>>
>>> ('. "1")
>>
>> With json-read, and (json-read-from-string "{\"quote\": \"1\"}"), I get
>>
>> ((quote . "1"))
>>
>> json-parse-string and json-parse-buffer don't seem to exist for me
>> (using the latest master branch).
>>
FWIW, after emacs -Q and (require 'json), the following four forms all
evaluate to ((quote . "1")) on my end:
(with-temp-buffer
(insert "{\"quote\": \"1\"}")
(goto-char (point-min))
(json-read))
(with-temp-buffer
(insert "{\"quote\": \"1\"}")
(goto-char (point-min))
(json-parse-buffer :object-type 'alist))
(json-read-from-string "{\"quote\": \"1\"}")
(json-parse-string "{\"quote\": \"1\"}" :object-type 'alist)
AFAICT the json.el function json-read-string is for reading a single
JSON string at point, not a whole object.
--
Basil
In GNU Emacs 27.0.50 (build 20, x86_64-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
of 2018-05-10 built on thunk
Repository revision: 766b057e41df7316808ec7658836fda75facda75
Windowing system distributor 'The X.Org Foundation', version 11.0.11906000
System Description: Debian GNU/Linux buster/sid
Configured using:
'configure 'CC=ccache gcc' 'CFLAGS=-march=native -O2 -pipe'
--config-cache --prefix=/home/blc/.local --with-mailutils
--with-x-toolkit=lucid --with-modules --with-file-notification=yes
--with-x'
Configured features:
XAW3D XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GSETTINGS
NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS LUCID X11 MODULES THREADS LIBSYSTEMD JSON LCMS2
prev parent reply other threads:[~2018-05-11 8:45 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-10 23:48 JSON Parsing Edge Case T.V Raman
2018-05-10 23:56 ` Noam Postavsky
2018-05-11 2:30 ` T.V Raman
2018-05-11 8:45 ` Basil L. Contovounesios [this message]
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