gistfile1.txt

foo: [a, b] {
    a + b
}

foo(2, 3) // => 5

ast: foo.ast.copy()
ast_addition: ast.children(0)
ast_call: ast_addition.children(0)
ast_call_target: ast_call.caller
ast_call_target.member: #'-'

bar: Snow.compile(ast)

bar(2, 3) // => -1