On Monday, 25 July 2016 at 09:29:38 UTC, Sönke Ludwig wrote:
The Diet template language is aimed at providing a way to define procedurally generated HTML/XML pages (or other output formats), with minimal visual noise. Syntax and feature set are heavily inspired by Jade <http://jade-lang.org/>, but instead of JavaScript, all expressions and statements are D statements, and everything that can be done at compile-time is done at compile-time.

Vibe.d still contains the original implementation, which was written around the limitations of DMD's CTFE engine back years ago, and is basically a monolithic parser+generator with little flexibility and a number of convenience features missing, because of their implementation complexity. The new implementation has been rewritten cleanly, with separate parser, modifier and generator modules, working on a common DOM tree intermediate representation.

The major new features/improvements are:

  - No external dependencies other than Phobos
  - Supports inline and nested tags syntax
- Supports string interpolations within filter nodes (falls back to
    runtime filters)
  - Supports AngularJS special attribute names
  - Extensible/configurable with traits structures
- Uses less memory during compilation (this one was a real surprise)
  - (Unit) tested from the start
- Supports arbitrary uses other than generating HTML, for example we
   use it similar to QML/XAML for our internal UI framework

The API documentation can be shown ba running DUB:
   dub fetch diet-ng --version=1.0.0-alpha.2
   dub run diet-ng -b ddox

You can try the library directly, or together with the latest alpha release of vibe.d (0.7.30-alpha.3). Simply add a dependency to "diet-ng", version "~>1.0.0-alpha.2". Vibe.d will automatically re-route render!(...) calls to diet-ng.

A small example with just the most essential features is shown in the README:
https://code.dlang.org/packages/diet-ng

More complex real-world examples:
https://github.com/rejectedsoftware/vibed.org/tree/master/views
https://github.com/rejectedsoftware/ddox/tree/master/views

Any comments/requests regarding the feature set or API are highly welcome!

Great stuff! Very much appreciated. Btw, the link to jade-lang.org (don't click!) leads to a dodgy business homepage atm. The right address is

http://jade-lang.com/

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