Stacc

A dynamically typed, interpreted, stack-based language.

How does it work?

Each call-frame/scope has its own variables and stack, so you can get/set variables and push/pop from the stack.

Here are all the different types of statements in the language:

• Function definition - begin fn_name: param1 param2 end
• Variable declaration (sets variable in current scope) - set var_name 123
• Push (pushes value onto current stack) - push 123
• Pop (pops value from stack and discards it) - pop / set a pop
• Print - print "Hello World!"
• Function call (pops argument values from parent stack, and pushes result onto parent stack) - call do_thing

Here are all the different types of expressions in the language:

• Identifier - gets value
• Literal - integer, float or string literal
• Binary operation - arithmetic (+, -, *, /) or comparison (<, >, <=, >=, ==, !=) expression
• Unary operation - prefix - or prefix not
• Pop (pops the value at the top of the stack and returns it) - pop

Note: the result of a function is either the value at the end of its stack or if the stack is empty, nothing and statements must be proceeded by newlines

Code Examples?

In the aptly named examples directory of the repo.

How do I use the executable?

• stacc to get a repl
• stacc to run the interpreter on a file