[fpc-pascal] First pas2js public release

[Mattias Gaertner]

On Wed, 20 Dec 2017 12:29:25 +0100
Ingemar Ragnemalm <ingemar at ragnemalm.se> wrote:

>[...]
> After some initial fiddling, I realized that there was a misspelling in 
> the wiki, and Hello World worked once I use -Jirtl.js rather than 
> -jirtl.js.

Fixed.


> And then I got some of the provided demos running too and 
> managed to write one of my own. So it looks good!
> 
> Here is an early result, expressing my feelings for this release:
> 
> http://ragnemalm.se/images/santa/santa.html
> 
> I couldn't get sound working, but otherwise it seems to work as it 
> should! (I hope it does for the rest of you.)

Beautiful. 
Can I add the URL as an example?


Mattias



> 
> /Ingemar
> 
> Den 2017-12-17 kl. 12:00, skrev Michael Van Canneyt:
> > From: Michael Van Canneyt<michael at freepascal.org>
> > To: FPC mailing list<fpc-pascal at lists.freepascal.org>,  FPC
> > 	development mailing list<fpc-devel at lists.freepascal.org>,  Lazarus
> > 	mailing list<lazarus at lists.lazarus-ide.org>
> > Subject: [fpc-pascal] First pas2js public release
> > Message-ID:<alpine.DEB.2.20.1712161655180.32745 at home.telenet.be>
> > Content-Type: text/plain; format=flowed; charset=US-ASCII
> >
> >
> > Hello fellow Pascal enthousiasts,
> >
> > It is with great pleasure that I can finally announce the first publicly
> > available version of pas2js. A "beta" version, version 0.8.39.
> > The endpoint (for the time being) of nearly 10 years of (slow) development.
> >
> > pas2js is a Object Pascal to Javascript transpiler. It compiles Object
> > pascal, and emits Javascript. The javascript is usable in the browser, and
> > in Node.js.
> >
> > It is open source, and part of FPC/Lazarus.
> > This makes Free Pascal a full-stack development environment for Web Development:
> > You can use it to program the server and the browser alike, all from within
> > the environment you love so much:)
> >
> > What does pas2js include ?
> > --------------------------
> >
> > * On the language level:
> >
> > It supports basically Delphi 7 syntax, interfaces excepted.
> > Naturally, any memory pointer operation is not possible in Javascript.
> > Code that relies on this will not work.
> >
> > This is just the first version, we of course want to add the same language
> > features that exist in Delphi and FPC today.
> >
> > * On the runtime level:
> >
> > Beside the compiler itself, there is a basic Object Pascal RTL,
> > and several units from the FPC Packages are also available:
> >
> > system
> > sysutils
> > Math
> > strutils
> > rtlconst
> > classes
> > contnrs
> > DB (yes, TDataset)
> > fpcunit testsuite
> > custapp
> > restconnection
> > js (javascript system objects)
> > web (browser provided objects)
> > libjquery (jquery is available too)
> > nodejs (basic node runtime environment)
> > typeinfo
> > objpas
> > browserconsole (support for writeln)
> > dateutils
> > browserapp
> > nodejsapp
> >
> > * Debugging:
> >
> > Obviously, the browser debugger can be used to debug the Javascript.
> > But there is more: the compiler can emit a source map, and this means that
> > if the browser finds the source file, it will display the original source
> > file instead of the javascript. You can debug Object pascal in the browser.
> >
> > * Demoes ?
> >
> > The package has several demoes, including FPReport, TDataset, JQuery and
> > Bootstrap.
> >
> > * Documentation  ?
> >
> > As befits an open source project, docs are lagging behind :/
> >
> > But a WIKI page has been started, it will be expanded as time permits:
> >
> > http://wiki.freepascal.org/pas2js
> >
> > * Sources ?
> >
> > The pas2js compiler sources and RTL sources have been checked in in FPC's
> > subversion repository. The page describes where to find it in SVN.
> >
> > * Binaries ?
> >
> > A snapshot is available:
> > http://www.freepascal.org/~michael/pas2js/pas2js-demo-0.8.39.zip
> >
> > * Reporting bugs ?
> >
> > The FPC bugtracker has now a 'pas2js' project, it can be used to report
> > bugs.
> >
> > * Can you help ?
> >
> > Yes, of course. There is still a lot of work to be done.
> > Feel free to contact me or Mattias Gaertner with questions.
> >
> > What about Lazarus ?
> > --------------------
> >
> > Lazarus "understands" the extensions to object pascal (for importing Javascript
> > classes) that were borrowed from the JVM version of the compiler, so the
> > code completion will continue to work.
> >
> > Using the pre-compiler command, CTRL-F9 just works. On error, you will be
> > shown the error location etc.
> >
> > Further and deeped integration of pas2js into lazarus is expected.
> > In the first place, IDE integration.
> > Later on, a real widget set for the browser can (and hopefully will) be created.
> >
> > But that is not all !
> > ---------------------
> >
> > In the very near future, a major Delphi component vendor will announce a
> > complete package for RAD web development in the Delphi IDE.
> > The expectation is that later on, the exact same components will be usable
> > in Lazarus. In essence, the component developer has created a complete browser
> > widgetset. More than 100 controls are available.
> >
> > Using this, you can design a web application as you design a desktop app;
> > Fully RAD, as you are used to. But even more, you can bind controls on a
> > form to existing tags in a web page, thus preserving the style in the web page.
> >
> > The first demoes for a selected audience have evoked very positive feedback
> > indeed.
> >
> > All this is based on pas2js.
> >
> > As soon as I receive permission, I will announce here where it becomes
> > available.
> >
> > Lastly!
> > -------
> >
> > On a more personal note, I wish to explicitly thank Mattias Gaertner for finally
> > finishing what has been started a long time ago.
> >
> > Without him, none of this would have been possible.
> >
> > The same is true for Detlef Overbeek, editor of Blaise Pascal magazine,
> > without his moral and financial help, it would have taken many more years to
> > finish this.
> >
> > It is - for me - a long standing dream finally come true.
> >
> > Enjoy !
> >
> > Michael.  
>