[fpc-pascal] First pas2js public release

[Dave Connolly]

This is fantastic. Great work everyone.

On 20 December 2017 at 11:59, Mattias Gaertner <nc-gaertnma at netcologne.de>
wrote:

> 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.
> >
> _______________________________________________
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>
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