= Sysel =

An effort to design a high-level programming language for writing HelenOS severs and applications.

 * [https://launchpad.net/sysel Sysel project at launchpad]

== Roadmap ==

|| '''Sub-project name'''            || '''Status''' || '''Description''' ||
|| Sysel Bootstrap Interpreter (SBI) || In progress  || Interpreter of Sysel written in C. Runs in HelenOS and POSIX. ||
|| Sysel Compiler Toolkit (NNPS)     || Not started  || Modular compiler of Sysel written in Sysel itself. To produce C and/or LLVM IR. 

== SBI ==

SBI is an interpreter of Sysel currently in development. It is available stand-alone for POSIX or integrated in HelenOS (only in Bazaar repository, not yet in a stable release). You can run it with the command "`sbi `''source_file.sy''". Demos that you can run are available in `/src/sysel/demos`. Source files comprising the library are in `/src/sysel/lib`.

You can also run `sbi` without parameters to enter interactive mode.

=== Synopsis of current SBI features ===

 * Primitive types: bool, char, int, string
 * Compound types: class, multi-dimensional array
 * Objective features: inheritance, grandfather class, static and non-static method invocation
 * Syntactic sugar: variadic functions, accessor methods (named and indexed)
 * Arithmetic: big integers, addition, subtraction, multiplication
 * Static type checking (mostly), Exception handling
 * Bindings: Text file I/O, !WriteLine, Exec

=== Missing SBI features ===

 * division
 * boolean operations (and, or, not)
 * structs
 * interfaces
 * builtin object methods/properties
 * auto-boxing
 * static/nonstatic checking
 * static class variables

 * generic types
 * method and operator overloading
 * packaging