README.md

Small Lang

Small Lang is a small programming language

This language is small, as its name suggests. But it is also powerful as it follows the example of LISP in leveraging the expressive power of lambda functions.

Features

• numbers
• strings
• variables
• functions
• lambda functions
• other data types (like arrays and dictionaries) can be supported via adding runtime functions

Code Example

The following code example contains all of the features of the language:

print("Hello, world")
print("3 + 5 =" add(3 5))

hello = (subject) => {
    print(concat("Hello, " subject))
    print(concat("Hello, " subject))
}

doIt = () => {
    print("Do it!")
}

doIt()

hello("Brother")

classmates = split("Jerry Jordan Johnny Jack Jeffery" " ")

each(classmates (peep) =>
    print(concat("Hello " peep))
)

fib = (n) =>
    if(eq(n 1)
        () => 1
        () =>
            if(eq(n 2)
                () => 1
                () =>
                    add(
                        fib(subtract(n 1))
                        fib(subtract(n 2))
                    )
            )
        )

print(fib(9))

Todo List

• parser
  • define moo lexer
    • number literal
    • string literal
    • assignment operator
    • identifier
    • parans
    • braces
    • fat arrow
    • whitespace
    • newline
  • make a parse.js that creates .ast files
  • variable assignment
  • function call
  • multiple lines
  • lambda function
  • comments
• generator
  • make a generate.js that creates .js files
  • variable assignment
  • function call
  • runtime functions
  • lambda function
  • comments
• code challenges

Demo video

small.lang.demo.mp4