mango 0.4.0

The Mango programming language (UNDER CONSTRUCTION)
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

use crate::towasm::collect::Statement;
use crate::towasm::control::Label;
use crate::towasm::values::Expression;
use crate::towasm::Wasm;
use std::fs::File;
use std::io;
use std::io::Write;

// todo: call_indirect

pub struct Call {}

impl Call {
    pub fn new() -> Box<Self> {
        Box::new(Call {})
    }
}

impl Wasm for Call {
    fn as_wat(&self) -> String {
        " call ".to_owned()
        //        format!(" add ")
    }

    fn write_wasm(&self, file: &mut File) -> io::Result<()> {
        file.write_all(b" call ")?;
        Ok(())
    }
}

pub struct Return {
    expression: Box<dyn Expression>,
}

impl Return {
    // Take label to make sure this inside a function, might be used in the future, or removed...
    pub fn new(_label: Label, expression: Box<dyn Expression>) -> Box<Self> {
        Box::new(Return { expression })
    }
}

impl Wasm for Return {
    fn as_wat(&self) -> String {
        self.expression.as_wat()
    }

    fn write_wasm(&self, _file: &mut File) -> io::Result<()> {
        unimplemented!();
    }
}

impl Statement for Return {}