https://github.com/malba124/skimi

Interpreter for a scheme like language
https://github.com/malba124/skimi

experiment interpreter lisp scheme

Last synced: 13 days ago
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Interpreter for a scheme like language

• Host: GitHub
• URL: https://github.com/malba124/skimi
• Owner: MAlba124
• Created: 2025-01-16T19:59:11.000Z (21 days ago)
• Default Branch: master
• Last Pushed: 2025-01-18T17:41:48.000Z (19 days ago)
• Last Synced: 2025-01-18T18:43:24.764Z (19 days ago)
• Topics: experiment, interpreter, lisp, scheme
• Language: Rust
• Homepage:
• Size: 25.4 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Skimi

Interpreter for a scheme like language.

## Examples

Some small examples running in the REPL

```console

skimi > (display "Hello, World!") (newline)

Hello, World!

skimi > (= 1 1)

#t

skimi > (= 1 2)

#f

skimi > (> 10 9 8 7 6)

#t

skimi > (define my-variable 20)

skimi > (+ my-variable 10)

30

skimi > (if (< my-variable 100) (display my-variable "is less than 100")) (newline)

20 is less than 100

```

Fibonacci sequence

```scheme

(define fib

    (lambda (n)

        (if (< n 3)

            1

            (+ (fib (- n 1)) (fib (- n 2))))))

(fib 20)

```

FizzBuzz

```scheme

(define fizz-buzz

  (lambda (i n)

    (cond

     ((= (% i 15) 0) (display "FizzBuzz"))

     ((= (% i 3) 0) (display "Fizz"))

     ((= (% i 5) 0) (display "Buzz"))

     (#t (display i)))

 (newline)

 (if (< i n) (fizz-buzz (+ i 1) n))))

(fizz-buzz 1 100)

```

Do loop

```scheme

(do ((x 0 (+ x 1)))

    ((>= x 10) (display "Loop finished") (newline))

    (display x)

    (newline))

```

This will output:

```console

0

1

2

3

4

5

6

7

8

9

Loop finished

```

#### References

- [https://github.com/rust-bakery/nom/blob/main/examples/s_expression.rs](https://github.com/rust-bakery/nom/blob/main/examples/s_expression.rs)

- [https://www.r6rs.org/final/html/r6rs-lib/r6rs-lib-Z-H-6.html#node_chap_5](https://www.r6rs.org/final/html/r6rs-lib/r6rs-lib-Z-H-6.html#node_chap_5)