Proposal: Database Engine for D
Russel Winder via Digitalmars-d
digitalmars-d at puremagic.com
Sat Jan 9 02:49:25 PST 2016
On Thu, 2016-01-07 at 15:32 -0500, Andrei Alexandrescu via Digitalmars-
d wrote:
> On 01/07/2016 02:02 PM, Russel Winder via Digitalmars-d wrote:
[…]
>
> Got it, thanks. I took a look at a familiar topic - json grammars.
>
> I just googled `boost spirit json` and followed through the top
> result.
> For C++, the grammar definition would be
> https://github.com/cierelabs/json_spirit/blob/master/ciere/json/parse
> r/grammar_def.hpp.
>
> Then I googled `pegged json` and the top result led to
> https://github.com/PhilippeSigaud/Pegged/blob/master/pegged/examples/
> json.d.
>
> Which do you like more?
Just a quick look I'm afraid, so very superficial at this stage:
The D code as presented is clearly simpler and easy to read. However
the D grammar is a string and not code so the anticipation is that
errors in the C++ code would be easier to find and correct. I guess the
question here is how good the compile time evaluation of strings is in
D and does it do good error reporting.
I still prefer the concept of Internal DSL explicitly in the code
rather than in strings just now, but this may still just be prejudice.
--
Russel.
=============================================================================
Dr Russel Winder t: +44 20 7585 2200 voip: sip:russel.winder at ekiga.net
41 Buckmaster Road m: +44 7770 465 077 xmpp: russel at winder.org.uk
London SW11 1EN, UK w: www.russel.org.uk skype: russel_winder
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