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Robbert Haarman

2014-02-15

Posted by inglorion
at 2014-01-22 19:09:23

Good article by Walter Bright about what it takes to create your own programming language and getting it adopted: So You Want To Write Your Own Language?

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Posted by inglorion
at 2014-01-07 05:09:55

Some of you may have noticed that my website has been down for an extended amount of time (over a week). What happened is that, while I was on vacation, the solid-state drive attached to the machine serving the site broke. Not having access to the files on the SSD, the machine was unable to serve the website, and I only got around to fixing the problem after I returned home.

I replaced the broken SSD with a new one, got everything back up and running, and started a backup job. Unfortunately, while running that backup job, the new SSD broke. I'm now serving the site from a different machine while I wait for a new hard disk to attach to the original server. This machine may have slightly older versions of some files, so I will have to do some work to get things up to the latest state, but I will wait until I have the replacement disk.

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Posted by inglorion
at 2013-12-01 22:50:52

I just released version 1.1.3 of the Voodoo Compiler. This release comes with the following bug fixes and improvements:

* Compatibility with Ruby 1.8, 1.9 and 2.0, tested with MRI/YARV and Rubinius.

* Labels that start in underscores now work.

* Programs that use symbols and then try to export or import them are now rejected.

The last change deserves some explanation. Previously, the Voodoo language definition imposed no constraints on the ordering of symbol use, import, and export. However, imported and exported symbols are treated differently from locally defined symbols at least on some platforms. In some cases, using a symbol without first importing it, and then later importing the symbol, would result in a program that compiles and links, but crashes or produces wrong results when run on some platforms. To avoid this rather nasty situation, I've updated the language definition to clarify that symbols that are imported or exported must be imported or exported before they are first used, and updated the Voodoo compiler to reject programs that do not obey this constraint.

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Posted by inglorion
at 2013-10-21 05:30:42

I just released version 1.1.2 of the Voodoo Compiler. This release comes with the following bug fixes and improvements:

* Fixed the allocation of space for local variables. Previously, let incantations inside blocks inside if incantations were not considered, which caused incorrect behavior when such let incantations were used.

* Fixed the computation of offsets for local variables on ARM. A bug in the way these offsets were computed caused incorrect behavior due to local variables being stored in the same memory locations as other values.

* Fixed the parser so that numbers after line continuation escapes are parsed as numbers, not symbols.

* Made the handling of undeclared symbols more consistent. voodooc now rejects code that uses symbols that have not been defined or imported with an error message. Previously, the behavior depended on whether or not the assembler accepted the generated code.

* make gem now configures the Voodoo Compiler with default assembler names, rather than using the configuration of the host system.

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Posted by inglorion
at 2013-08-11 04:39:16

I just put up version 1.0.0 of cconstants. cconstants is a library and a set of command line utilities that allow the values of constants defined in C header files to be queried outside the C preprocessor. This allows the values of these constants to be queried from programming languages other than C, on systems without the C preprocessor installed, and on systems where the header files defining these constants are not available.

One way this library can be used is to provide the right magic values when calling C code from Voodoo programs.

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