Elementary_Arithmetic

中文版

it's a language called ELAR which support elementary arithmetic.

ELAR's sytanx like lisp, having four buildin function: add, subtract, multipy, divide.

start

npx elar

yarn install -g elar

playing

if not knowing what to do, please run npx elar --help, it will provide some example and explaination.

repl

> elar

> ? (add 1 (divide 2  (multipy 4 2) ) )
# 1.5

exec file

you can use run command to exec file which content match the ELAR grammer.

elar run example/example.elar

How to build the language

there are three article to help you step by step to building the same language. But I writing by Chinese, but many code snapshot which will help you.

1. Build own your language —— Tokenize
2. Build own your language —— Parse
3. Build own your language —— Evaluate

Next

Think...