Forth in Go
Implement an evaluator for a very simple subset of Forth
exercism fetch go 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.
Running the tests
To run the tests run the command
go test from within the exercise directory.
If the test suite contains benchmarks, you can run these with the
go test -bench .
Keep in mind that each reviewer will run benchmarks on a different machine, with different specs, so the results from these benchmark tests may vary.
For more detailed information about the Go track, including how to get help if you're having trouble, please visit the exercism.io Go language page.
Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.