milly

milly is an hobby, and should not be taken seriously.

Interpreter for a Minimal ML-like language whose ideal goal is to be used for bootstrapping compilers and interpreters.

How to build

milly's interpreter is written in portable ISO C11, sources are in src/ and header files are in include/.

If your system happens to have a make implementation compatible with GNU Make, you can just run:

make

Otherwise, something like this should work:

$(CC) -std=c11 -o milly -Iinclude/ src/*.c

The language

milly is a minimal dialect of Standard ML and Haskell, here is a list of the features (or better, limitations) I want to introduce:

• Keep the implementation <5000 LOC
• Eager evaluation (call by value)
• Algebraic Datatypes (pretty useful for representing syntax trees)
• First class functions
• Pattern patching (pretty useful for analyzing syntax trees)
• Integers, booleans, strings
• Mutable ref cell
• FFI to C
• Polymorphic types à la Hindley Milner (probably unfeasible)
• Automatic currying of functions, with optimised partial evaluation (unfeasible)
• Delimited continuations (this is an overkill)
• Easy syntax allowing easy kakoune support

milly's full grammar is specified as a pair of lex and yacc files in ref_parser/.

kakoune plugin for milly is in extra/milly.kak.