Forth in OCaml
Implement an evaluator for a very simple subset of Forth
exercism fetch ocaml forth
Implement an evaluator for a very simple subset of Forth.
Forth is a stack-based programming language. Implement a very basic evaluator for a small subset of Forth.
Your evaluator has to support the following words:
Your evaluator also has to support defining new words using the
: word-name definition ;.
To keep things simple the only data type you need to support is signed integers of at least 16 bits size.
You should use the following rules for the syntax: a number is a sequence of one or more (ASCII) digits, a word is a sequence of one or more letters, digits, symbols or punctuation that is not a number. (Forth probably uses slightly different rules, but this is close enough.)
Words are case-insensitive.
For installation and learning resources, refer to the exercism help page.
To work on the exercises, you will need
Core. Consult opam website for instructions on how to install
opam for your OS. Once
opam is installed open a terminal window and run the following command to install core:
opam install core
To run the tests you will need
OUnit. Install it using
opam install ounit
A Makefile is provided with a default target to compile your solution and run the tests. At the command line, type:
utop is a command line program which allows you to run Ocaml code interactively. The easiest way to install it is via opam:
opam install utop
Consult utop for more detail.
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