ux-compiler 0.1.0

UX Framework Complier
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
48
49
50
51
52
53
54
55

use std::fmt::{Debug, Error, Formatter};

pub enum Expr {
    Number(i32),
    Op(Box<Expr>, Opcode, Box<Expr>),
    Error,
}

pub enum ExprSymbol<'input> {
    NumSymbol(&'input str),
    Op(Box<ExprSymbol<'input>>, Opcode, Box<ExprSymbol<'input>>),
    Error,
}

#[derive(Copy, Clone)]
pub enum Opcode {
    Mul,
    Div,
    Add,
    Sub,
}

impl Debug for Expr {
    fn fmt(&self, fmt: &mut Formatter) -> Result<(), Error> {
        use self::Expr::*;
        match *self {
            Number(n) => write!(fmt, "{:?}", n),
            Op(ref l, op, ref r) => write!(fmt, "({:?} {:?} {:?})", l, op, r),
            Error => write!(fmt, "error"),
        }
    }
}

impl<'input> Debug for ExprSymbol<'input> {
    fn fmt(&self, fmt: &mut Formatter) -> Result<(), Error> {
        use self::ExprSymbol::*;
        match *self {
            NumSymbol(n) => write!(fmt, "{:?}", n),
            Op(ref l, op, ref r) => write!(fmt, "({:?} {:?} {:?})", l, op, r),
            Error => write!(fmt, "error"),
        }
    }
}

impl Debug for Opcode {
    fn fmt(&self, fmt: &mut Formatter) -> Result<(), Error> {
        use self::Opcode::*;
        match *self {
            Mul => write!(fmt, "*"),
            Div => write!(fmt, "/"),
            Add => write!(fmt, "+"),
            Sub => write!(fmt, "-"),
        }
    }
}