wacko/sections/
function_section.rs

1use crate::Error;
2use leb128::write;
3use std::io::Write;
4
5/// Editor Note: This struct relies ony on external validation.
6pub struct FunctionSection {
7    declarations: Vec<u32>,
8}
9
10impl FunctionSection {
11    pub fn new() -> Self {
12        Self {
13            declarations: Vec::new(),
14        }
15    }
16
17    pub fn add_fn_decl(&mut self, type_index: u32) -> usize {
18        self.declarations.push(type_index);
19        self.declarations.len() - 1
20    }
21
22    pub fn compile(self, block_count: usize, writer: &mut impl Write) -> Result<(), Error> {
23        writer.write_all(&[Self::id()])?;
24        let mut buff = Vec::new();
25        write::unsigned(&mut buff, block_count as u64)?;
26        for i in self.declarations.len() - block_count..self.declarations.len() {
27            write::unsigned(&mut buff, self.declarations[i] as u64)?;
28        }
29
30        write::unsigned(writer, buff.len() as u64)?;
31        writer.write_all(&buff)?;
32        Ok(())
33    }
34
35    fn id() -> u8 {
36        0x03
37    }
38}
39
40impl Default for FunctionSection {
41    fn default() -> Self {
42        Self::new()
43    }
44}
wacko/sections/function_section.rs

wacko/sections/
function_section.rs
