Brainf*ck interpreter in Go

Requirements

Prepare a brainf*ck interpreter

• Make it stack-based. This should mean that every loop must be in stack one level below current.

• Make it read input from io.Reader without knowing all input at once(no ioutil.ReadAll and similar, only read what is needed for current operation)

• Make it extensible. Let it have ability to add custom operations (for bonus points)

Running

$ go run main.go hello_world.bf
Checking file existence: 'hello_world.bf'
Exists! Opening now...
Running program from file...
Hello World!

$ go run main.go '++>+++++[<+>-]++++++++[<++++++>-]<.'
Checking file existence: '++>+++++[<+>-]++++++++[<++++++>-]<.'
Can't find provided argument as file.
Running program as a source string: '++>+++++[<+>-]++++++++[<++++++>-]<.'
7%

Testing

$ go test
7Hello World!
PASS
ok  github.com/tonky/bf 0.003s