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Date: Fri, 31 Mar 2017 16:02:33 +0200
From: =?ISO-8859-2?Q?Marcin_Zaj=B1czkowski?= <mszpak@wp.pl>
To: users@groovy.apache.org
Subject: Custom implicit type conversion on assignment
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Organization: Poznaj Poczte WP http://poczta.wp.pl/info-start.html
archived-at: Fri, 31 Mar 2017 14:02:42 -0000

Hi,

To simplify initialization of my production Money object in tests I've written an extension module to use explicit coercion:

> Money tenDolars = 10.0 as Money	//works fine, but could be shorter

It works fine, but it's Groovy so I would like to achieve more :).

My idea is to be able to write:

> Money tenDolars = 10.0	//desired construction

I was thinking about AST transformation (global or annotation based) to modify assignments like those (with Money on the left side and BigDecimal on the right) in a given class (or globally in a test context) to add explicit coercion automatically.

Unfortunately, usually AST transformations I've found deal with adding methods or statements in a method.


Could you point a Groovy build-in transformation or a place in Groovy code which deals with implicit coercion?


Marcin

-- 
http://blog.solidsoft.info/ - Working code is not enough