WIP IDL compiler rewrite

WIP IDL compiler rewrite

(Closed as instead rewritten incrementally, and bug now closed.)

BUG=239771

[kojih, 2013-06-24 10:49:10]

Issue:
https://code.google.com/p/chromium/issues/detail?id=239771

[haraken, 2013-06-24 11:03:51]

I realized that the template makes the code generation much much cleaner.

Once the Python parser is landed, let's split the CL into pieces and land them.
I'm happy to review the details then.

[Nils Barth (inactive), 2013-08-16 10:17:51]

Posted latest WIP, which has lots of cleanup and refactoring.
It still needs a *lot* more refactoring;
next I'll split out constants, so we can review and land that.

[haraken, 2013-08-16 13:00:02]

On 2013/08/16 10:17:51, Nils Barth wrote:
> Posted latest WIP, which has lots of cleanup and refactoring.
> It still needs a *lot* more refactoring;
> next I'll split out constants, so we can review and land that.

Sounds like a plan!

[Nils Barth (inactive), 2013-08-16 14:40:57]

Here's another update.
This splits off constants, both in the code generator and in the templates.
The resulting code fits on one page each and is very simple and clear.
(It'll be even clearer once we do some cleanups later.)
Next week I'll make a CL with just the constants (and changes to existing code),
which should be easy to review and land.

This CL also starts pretty major refactoring, splitting off logical modules
(notably type functions to start).
The main Code Generator is already down to 2400 lines, from 3000 (and 6000 in
Perl), and I should get this down to 1800 or less next week.
This'll hopefully make it *much* easier and faster to review (and read)!

[Nils Barth (inactive), 2013-08-21 01:24:37]

Here's an update.
It's now refactored sufficiently that branching is easy: the current code (well,
my revision of it) is at the top of files, while below a "# WIP" line are the
WIP functions.
In principle all we need to do is add a function like "generate_constants()" to
the main generate_contents() function, move necessary functions above the WIP
line, and cut along the line!
For templates it's easier to have separate templates, which I've called ..._wip.

This patch set also ensure the Python output is *identical* to the existing Perl
output, which allows automated comparison, both speeding up my development (I
can check for no regressions) and allowing bindings tests.

I'll now split off a "constants" branch, and then post a separate CL for just
that.

[Nils Barth (inactive), 2013-08-21 04:31:34]

Latest patch set has consts + primitive type readonly attributes as a distinct
branch;
(need to add some attributes to get new passing IDL files).

I'll now post a separate const CL by just cutting along the line!