kernel 1.1.0

Abstract Reactive Streams
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47

use commands::ast::Value;
use commands::ast::AST;

pub struct Dot<'ast> {
    lvalue: &'ast AST<'ast>,
    rvalue: &'ast AST<'ast>,
}

pub fn new<'ast>(lvalue: &'ast AST<'ast>, rvalue: &'ast AST<'ast>) -> Dot<'ast> {
    Dot {
        lvalue: lvalue,
        rvalue: rvalue,
    }
}

impl<'ast> Dot<'ast> {
    fn a_a(l: i64, r: i64) -> AST<'ast> {
        AST::Value(Value::Number(if r == l { 1 } else { 0 }))
    }
    fn l_a(l: &'ast AST<'ast>, r: &'ast AST<'ast>) -> AST<'ast> {
        AST::Value(Value::Number(1))
    }
    fn a_l(l: &'ast AST<'ast>, r: &'ast AST<'ast>) -> AST<'ast> {
        AST::Value(Value::Number(1))
    }
    fn l_l(l: &[i64], r: &[i64]) -> AST<'ast> {
        AST::Value(Value::Number(1))
    }
}

impl<'ast> Iterator for Dot<'ast> {
    type Item = AST<'ast>;
    fn next(&mut self) -> Option<Self::Item> {
        match (self.lvalue, self.rvalue) {
            (&AST::Value(Value::Number(l)), &AST::Value(Value::Number(r))) => Some(AST::Value(Value::Float((l+r) as f64))), // TODO: Fix float conversion
            _ => None,
        }
    }
}

impl<'a, 'ast> Iterator for &'a Dot<'ast> {
    type Item = AST<'ast>;

    fn next(&mut self) -> Option<Self::Item> {
        None
    }
}