This repository contains small, self-contained bits of code (“studies”) written in ANS-compatible Forth, along with descriptions for them. The studies currently include:
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ESCAPE and RESUME, an implementation of multiple non-local exits identified by exit tags on top of the ANS EXCEPTION wordset. A preparation for the next item. Comes with a test suite. Uses only the CORE and EXCEPTION ANS wordsets.
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Conditions and restarts, a condition and restart system in the Common Lisp style. Unlike the ANS Forth exceptions, conditions can be handled by restarting execution at one of predetermined points, without requiring the handler to know how the restart is implemented or the restart code to contain handling policy. Comes with detailed documentation, an example and a test suite. Uses only the CORE and EXCEPTION ANS wordsets and the CORE EXT word
PARSE, but overrides several standard words.
Everything here is free to use or modify however you please, with no legal requirement to give attribution (although of course I’ll appreciate it if you do so anyway). See LICENSE for details.