rune/ast/
item_impl.rs

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1use crate::ast::prelude::*;
2
3#[test]
4#[cfg(not(miri))]
5fn ast_parse() {
6    rt::<ast::ItemImpl>("impl Foo {}");
7    rt::<ast::ItemImpl>("impl Foo { fn test(self) { } }");
8    rt::<ast::ItemImpl>(
9        "#[variant(enum_= \"SuperHero\", x = \"1\")] impl Foo { fn test(self) { } }",
10    );
11    rt::<ast::ItemImpl>("#[xyz] impl Foo { #[jit] fn test(self) { } }");
12}
13
14/// An impl item.
15#[derive(Debug, TryClone, PartialEq, Eq, ToTokens, Spanned)]
16#[non_exhaustive]
17pub struct ItemImpl {
18    /// The attributes of the `impl` block
19    #[rune(iter)]
20    pub attributes: Vec<ast::Attribute>,
21    /// The `impl` keyword.
22    pub impl_: T![impl],
23    /// Path of the implementation.
24    pub path: ast::Path,
25    /// The open brace.
26    pub open: T!['{'],
27    /// The collection of functions.
28    #[rune(iter)]
29    pub functions: Vec<ast::ItemFn>,
30    /// The close brace.
31    pub close: T!['}'],
32}
33
34impl ItemImpl {
35    /// Parse an `impl` item with the given attributes.
36    pub(crate) fn parse_with_attributes(
37        parser: &mut Parser<'_>,
38        attributes: Vec<ast::Attribute>,
39    ) -> Result<Self> {
40        let impl_ = parser.parse()?;
41        let path = parser.parse()?;
42        let open = parser.parse()?;
43
44        let mut functions = Vec::new();
45
46        while !parser.peek::<ast::CloseBrace>()? {
47            functions.try_push(ast::ItemFn::parse(parser)?)?;
48        }
49
50        let close = parser.parse()?;
51
52        Ok(Self {
53            attributes,
54            impl_,
55            path,
56            open,
57            functions,
58            close,
59        })
60    }
61}
62
63item_parse!(Impl, ItemImpl, "impl item");
rune/ast/item_impl.rs

rune/ast/
item_impl.rs
