rustc_attr_parsing/attributes/
debugger.rs

1use rustc_feature::AttributeStability;
2use rustc_hir::attrs::{DebugVisualizer, DebuggerVisualizerType};
3
4use super::prelude::*;
5
6pub(crate) struct DebuggerVisualizerParser;
7
8impl CombineAttributeParser for DebuggerVisualizerParser {
9    const PATH: &[Symbol] = &[sym::debugger_visualizer];
10    const ALLOWED_TARGETS: AllowedTargets =
11        AllowedTargets::AllowList(&[Allow(Target::Mod), Allow(Target::Crate)]);
12    const TEMPLATE: AttributeTemplate = ::rustc_feature::AttributeTemplate {
    word: false,
    list: Some(&[r#"natvis_file = "...", gdb_script_file = "...""#]),
    one_of: &[],
    name_value_str: None,
    docs: Some("https://doc.rust-lang.org/reference/attributes/debugger.html#the-debugger_visualizer-attribute"),
}template!(
13        List: &[r#"natvis_file = "...", gdb_script_file = "...""#],
14        "https://doc.rust-lang.org/reference/attributes/debugger.html#the-debugger_visualizer-attribute"
15    );
16    const STABILITY: AttributeStability = AttributeStability::Stable;
17
18    type Item = DebugVisualizer;
19    const CONVERT: ConvertFn<Self::Item> = |v, _| AttributeKind::DebuggerVisualizer(v);
20
21    fn extend(
22        cx: &mut AcceptContext<'_, '_>,
23        args: &ArgParser,
24    ) -> impl IntoIterator<Item = Self::Item> {
25        let single = cx.expect_single_element_list(args, cx.attr_span)?;
26        let (ident, args) = cx.expect_name_value(single, single.span(), None)?;
27        let visualizer_type = match ident.name {
28            sym::natvis_file => DebuggerVisualizerType::Natvis,
29            sym::gdb_script_file => DebuggerVisualizerType::GdbPrettyPrinter,
30            _ => {
31                cx.adcx().expected_specific_argument(
32                    ident.span,
33                    &[sym::natvis_file, sym::gdb_script_file],
34                );
35                return None;
36            }
37        };
38
39        let path = cx.expect_string_literal(args)?;
40
41        Some(DebugVisualizer { span: ident.span.to(args.value_span), visualizer_type, path })
42    }
43}
rustc_attr_parsing/attributes/debugger.rs

rustc_attr_parsing/attributes/
debugger.rs
