By Tim Henderson ([email protected])
This is a simple language with a static type checker. It is an -interpreted- expression oriented functional language.
(interpreted is a strong word. It now has a semi-functional code generator)
It features:
- First class functions
- Closures
- Integers, floats, strings, booleans
- Conditional expressions
This language is evolving fast and may have undocumented features or bugs. It started out as an example I wrote for the compilers class I teach, EECS 337 Compiler Design, at Case Western Reserve University.
$ go get github.com/timtadh/tcel
$ tcel ./ex/fib.x
file ./ex/fib.x
add = fn(x int) fn(int) int {
fn(y int) int {
x + y
}
}
fib = fn(i int) int {
if i <= 1 {
1
} else {
add(self(i-1))(self(i-2))
}
}
fib(0)
fib(1)
fib(2)
fib(3)
fib(4)
fib(5)
fib(6)
$ tcel ex/fib.x
> lexing ex/fib.x
> parsing ex/fib.x
> type checking
> evaluating
unit
unit
1
1
2
3
5
8
13