Little-Racket

Dependence:

1. libsodium (link to libsodium)

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Target:

1. variable definition and setting：x

   DataTypes: Numbers、Strings、Characters、Lists、Pairs.

   e.g:

   (define x 1)

   (define x '(1 . 2))

   (define x '(1 2 3))

   (set! x 1)

   (define x 'a)

2. procedure definition(normally argument)：(lambda (x) expr)

   e.g: (define x (lambda (arg) expr))

3. binding:

   1. (let ([x v]) expr)
   2. (let* ...)
   3. (letrec ...)

4. calling：(proc arg ...)

5. calculate：(+-*/ expr ...)

6. Built-in procdures: (list), (cons), (list?), (pair?), (map), (filter), (car), (cdr), (=) (>) (<) for Number

7. Conditional Form: (if), (and), (or), (not)

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DLC:

LRT (Little-Racket-For-The-Truth) - 2019.10

1. (cond)
2. ((lambda (...) ...) ...), procedure call
3. (>=), (<=)
4. racket null and empty

LRL (Little-Racket-Integrate-With-Third-Part-Lib) - 2020.3

1. SHA256 hash function provided by libsodium

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Using cmake to build this project.

make sure you have installed libsodium first.

Compile the project:

> cd <path_to_the_project>
> chmod 755 ./build.sh 
> sudo ./build.sh
> cd ./build
# you can find executable file named "Little-Racket" in current folder.
> ./Little-Racket <path_to_racket_file>
> ......

Install the project:

> cd <path_to_the_project>
> chmod 755 ./install.sh
> sudo ./install.sh
# Default install to /usr/local/bin

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Workflow

Raw code

-> tokens (tokenizer)

-> Racket type AST (parser)

-> result (calculator)