rustc_attr_parsing/attributes/
debugger.rs

1use rustc_hir::attrs::{DebugVisualizer, DebuggerVisualizerType};
2
3use super::prelude::*;
4
5pub(crate) struct DebuggerViualizerParser;
6
7impl CombineAttributeParser for DebuggerViualizerParser {
8    const PATH: &[Symbol] = &[sym::debugger_visualizer];
9    const ALLOWED_TARGETS: AllowedTargets =
10        AllowedTargets::AllowList(&[Allow(Target::Mod), Allow(Target::Crate)]);
11    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!(
12        List: &[r#"natvis_file = "...", gdb_script_file = "...""#],
13        "https://doc.rust-lang.org/reference/attributes/debugger.html#the-debugger_visualizer-attribute"
14    );
15
16    type Item = DebugVisualizer;
17    const CONVERT: ConvertFn<Self::Item> = |v, _| AttributeKind::DebuggerVisualizer(v);
18
19    fn extend(
20        cx: &mut AcceptContext<'_, '_>,
21        args: &ArgParser,
22    ) -> impl IntoIterator<Item = Self::Item> {
23        let single = cx.expect_single_element_list(args, cx.attr_span)?;
24        let (ident, args) = cx.expect_name_value(single, single.span(), None)?;
25        let visualizer_type = match ident.name {
26            sym::natvis_file => DebuggerVisualizerType::Natvis,
27            sym::gdb_script_file => DebuggerVisualizerType::GdbPrettyPrinter,
28            _ => {
29                cx.adcx().expected_specific_argument(
30                    ident.span,
31                    &[sym::natvis_file, sym::gdb_script_file],
32                );
33                return None;
34            }
35        };
36
37        let Some(path) = args.value_as_str() else {
38            cx.adcx().expected_string_literal(args.value_span, Some(args.value_as_lit()));
39            return None;
40        };
41
42        Some(DebugVisualizer { span: ident.span.to(args.value_span), visualizer_type, path })
43    }
44}
rustc_attr_parsing/attributes/debugger.rs

rustc_attr_parsing/attributes/
debugger.rs
