/rust/registry/src/index.crates.io-6f17d22bba15001f/wasm-encoder-0.25.0/src/component/start.rs

Source (jump to first uncovered line)
use crate::{ComponentSection, ComponentSectionId, Encode};

/// An encoder for the start section of WebAssembly components.
///
/// # Example
///
/// ```
/// use wasm_encoder::{Component, ComponentStartSection};
///
/// let start = ComponentStartSection { function_index: 0, args: [0, 1], results: 1 };
///
/// let mut component = Component::new();
/// component.section(&start);
///
/// let bytes = component.finish();
/// ```
#[derive(Clone, Debug)]
pub struct ComponentStartSection<A> {
    /// The index to the start function.
    pub function_index: u32,
    /// The arguments to pass to the start function.
    ///
    /// An argument is an index to a value.
    pub args: A,
    /// The number of expected results for the start function.
    ///
    /// This should match the number of results for the type of
    /// the function referenced by `function_index`.
    pub results: u32,
}

impl<A> Encode for ComponentStartSection<A>
where
    A: AsRef<[u32]>,
{
    fn encode(&self, sink: &mut Vec<u8>) {
        let mut bytes = Vec::new();
        self.function_index.encode(&mut bytes);
        self.args.as_ref().encode(&mut bytes);
        self.results.encode(&mut bytes);
        bytes.encode(sink);
    }
}

impl<A> ComponentSection for ComponentStartSection<A>
where
    A: AsRef<[u32]>,
{
    fn id(&self) -> u8 {
        ComponentSectionId::Start.into()
    }
}

Coverage Report

Created: 2023-04-25 07:07

Line	Count	Source (jump to first uncovered line)
1		use crate::{ComponentSection, ComponentSectionId, Encode};
2
3		/// An encoder for the start section of WebAssembly components.
4		///
5		/// # Example
6		///
7		/// ```
8		/// use wasm_encoder::{Component, ComponentStartSection};
9		///
10		/// let start = ComponentStartSection { function_index: 0, args: [0, 1], results: 1 };
11		///
12		/// let mut component = Component::new();
13		/// component.section(&start);
14		///
15		/// let bytes = component.finish();
16		/// ```
17	0	#[derive(Clone, Debug)]
18		pub struct ComponentStartSection<A> {
19		/// The index to the start function.
20		pub function_index: u32,
21		/// The arguments to pass to the start function.
22		///
23		/// An argument is an index to a value.
24		pub args: A,
25		/// The number of expected results for the start function.
26		///
27		/// This should match the number of results for the type of
28		/// the function referenced by `function_index`.
29		pub results: u32,
30		}
31
32		impl<A> Encode for ComponentStartSection<A>
33		where
34		A: AsRef<[u32]>,
35		{
36	0	fn encode(&self, sink: &mut Vec<u8>) {
37	0	let mut bytes = Vec::new();
38	0	self.function_index.encode(&mut bytes);
39	0	self.args.as_ref().encode(&mut bytes);
40	0	self.results.encode(&mut bytes);
41	0	bytes.encode(sink);
42	0	} Unexecuted instantiation: <wasm_encoder::component::start::ComponentStartSection<alloc::vec::Vec<u32>> as wasm_encoder::Encode>::encode Unexecuted instantiation: <wasm_encoder::component::start::ComponentStartSection<_> as wasm_encoder::Encode>::encode
43		}
44
45		impl<A> ComponentSection for ComponentStartSection<A>
46		where
47		A: AsRef<[u32]>,
48		{
49	0	fn id(&self) -> u8 {
50	0	ComponentSectionId::Start.into()
51	0	} Unexecuted instantiation: <wasm_encoder::component::start::ComponentStartSection<alloc::vec::Vec<u32>> as wasm_encoder::component::ComponentSection>::id Unexecuted instantiation: <wasm_encoder::component::start::ComponentStartSection<_> as wasm_encoder::component::ComponentSection>::id
52		}