plaid_v1

Plaid

Plaid is a basic scripting language with closures and an optional typing. It was built as an exercise to learn more about language implementation.

Examples

The canonical example:

print "hello world"

An example of the closures in action:

let newCounter := fn (n: Int): () => Int {
    n := n - 1
    return fn (): Int {
        n := n + 1
        return n
    }
}

let c1 := newCounter(1)
let c2 := newCounter(10)

print c1() # prints "1"
print c1() # prints "2"

print c2() # prints "10"
print c2() # prints "11"

print c1() # prints "3"

TODO

Plaid is still unstable and prone to breaking changes. Upcoming changes (in no particular order) include:

• Optional types patterned off of Swift
• A module import/export system
• Type checking via an is operator
• Type conversion via an as operator, ex: x as Int, returns optional-wrapped type
• Improve native type method registration, maybe native Object API?