New Lua for Lazarus is out

[malcome]

Hi, New Lua for Lazarus is out.

https://github.com/malcome/Lua4Lazarus

Usage:
    See sample projects. (Needs lua53.dll, lua53.so, etc.)

    -New Lua 5.3 header unit for FPC.
    -Sample of using database(TDbf).
    -Sample of using ActiveX.
    -Sample of using extension module in Lua.
    -Sample of using multithread.
    -Sample of printing a report with drawing PDF.

Contribution:
    1. Fork it
    2. Create your feature branch
    3. Commit your changes
    4. Push to the branch
    5. Create new Pull Request

License:
  New BSD

Thanks.

[Roland57]

Hello! I can't wait to test it. But are Lua 5.3 binaries (for Windows) available somewhere? I looked for it without success. It probably wouldn't so difficult to build it myself (with MINGW-GCC?) but I never tried.

[malcome]

Hi, Roland.
https://github.com/malcome/Lua4Lazarus/releases/tag/R150205
But for Win32 only.
Thanks.

[Roland57]

Thank you. 

[Roland57]

I looked at the examples : all tested successfully. Impressive!

As far as I am concerned, I am interested in using Lua scripts in my Pascal programs, as it is described in this discussion:

http://www.pascalgamedevelopment.com/showthread.php?32398-Using-a-Lua-script-in-a-FreePascal-program

Would it be possible to do that with your units?

[malcome]

Hi, Roland.
Probably yes, if you do not use incompatibilities with the previous Lua version.

[Roland57]

OK, thank you for your answer. I will see if I succeed to do it.

[Roland57]

Hello!

I expected to have several things to change in my current code to compile it with your unit, but I didn't change anything (except the unit name) and it works perfectly. 

I replaced the Lua script, in order to illustrate a new feature of Lua 5.3 (the euclidian division by the "//" operator).

With your permission I post the example here.

[vfclists]

How would you do the opposite - creating a Pascal fundtion which can be called from Lua?

[Leledumbo]

How would you do the opposite - creating a Pascal fundtion which can be called from Lua?

As how it's done in any other languages. Lua tutorial & manual has a section explaining C, which is the same in Pascal providing you use cdecl calling convention. Lua convention for exchanging parameters and function results remains the same.

[hengky]

how can we use library in lua script with lazarus

[Phil]

how can we use library in lua script with lazarus

As Leledumbo explained.

You may find this helpful for ideas:

https://macpgmr.github.io/MacXPlatform/PascalDynLibs.html

These articles cover the big 3 in calling code languages: Python, .NET, and C languages via a header file.

[lainz]

how can we use library in lua script with lazarus

here is a package I made with a lot of code that show how to use lua
https://github.com/lainz/lainzcodestudio

Check the project wiki also..