Evalisp

Evalisp is a lispy sublanguage of Fildesh that is invoked whenever $( appears. In this repository, we explore its future.

Goals

We hope to find a minimal language with:

• Side-effect freedom.
  • For each scope, functions & variables are resolved in the order they appear in source code.
    • Like in a Parsing Expression Grammar (PEG).
    • No ambiguity when resolving functions with conflicting type signatures.
  • Custom parsing and formatting replace file I/O.
    • Input data is included/concatenated into the source code and is evaluated as code with custom parsing.
    • Output is the evaluation result written with custom formatting.
• Type coercion rules.
• Python-like module system.
• Mixins composed with C3 linearization.

Current Status

Fildesh v0.1.6 will only include 2 expressions: typed assignment and string concatenation.

; name=value
(: name Type value)

; String concatenation.
(: concatenated String (+ "hello" " " "world"))

As for this repository's code... it's still a work in progress. Prototypes, tests, and documentation will start appearing eventually.