Released Cyclone Scheme 0.2

September 7th, 2016

Cyclone Scheme 0.2 is now available:

http://justinethier.github.io/cyclone/

Cyclone consists of a compiler and interpreter targeting as well as written in R7RS Scheme. A garbage collector inspired by Cheney on the M.T.A. is also provided, with support for native threads.

New features in this release:

• Added the following libraries from R7RS-large red edition (data structures):
  • SRFI 1 list library
  • SRFI 133 vector library
  • SRFI 111 boxes
  • SRFI 117 mutable queues
  • SRFI 132 sorting library
• Added SRFI 2, and-let*
• Added parameterize from section 4.2.6 of R7RS to the (scheme base) library.
• Added ` let-values and let*-values to (scheme base)`.
• Added infinite?, finite?, and nan? to (scheme inexact).
• Added string ports to (scheme base) - open-input-string, open-output-string, and get-output-string.
• Added bytevector ports to (scheme base) - get-output-bytevector, open-input-bytevector, and open-output-bytevector.
• Modified cyclone to also search the current working directory for built-in headers and libraries.

Bug fixes:

• Thanks to Mark Meyer, identified and fixed several segfaults in write and display.
• Updated write to display escaped character sequences (EG: \t) instead of literal characters.
• Prevent C compilation errors when building a program that only contains basic primitives or a constant at the top level.

• Fixed the compiler to allow application of a function that can take any number of arguments. For example:

     ((lambda test (write test)) 1 2 3 4)
  

• Updated eval to handle functions that take an optional number of arguments.
• Updated number->string to omit leading zeros for binary conversions.
• Fixed apply to use the proper semantics when receiving more than one data argument.
• Changed the assoc and member functions to accept an optional comparison function, and modified both families of functions to be native Scheme functions instead of C primitives.
• Allow libraries to contain multiple import, begin, and export sections.

Thanks,

Justin

User Manual

http://justinethier.github.io/cyclone/docs/User-Manual

R7RS Compatibility

http://justinethier.github.io/cyclone/docs/Scheme-Language-Compliance

Bug Tracker

https://github.com/justinethier/cyclone/issues