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|
//! FIXME: write short doc here
use crate::completion::{CompletionContext, Completions};
/// Completes constats and paths in patterns.
pub(super) fn complete_pattern(acc: &mut Completions, ctx: &CompletionContext) {
if !ctx.is_pat_binding_or_const {
return;
}
if ctx.record_pat_syntax.is_some() {
return;
}
// FIXME: ideally, we should look at the type we are matching against and
// suggest variants + auto-imports
ctx.scope().process_all_names(&mut |name, res| {
match &res {
hir::ScopeDef::ModuleDef(def) => match def {
hir::ModuleDef::Adt(hir::Adt::Enum(..))
| hir::ModuleDef::Adt(hir::Adt::Struct(..))
| hir::ModuleDef::EnumVariant(..)
| hir::ModuleDef::Const(..)
| hir::ModuleDef::Module(..) => (),
_ => return,
},
hir::ScopeDef::MacroDef(_) => (),
_ => return,
};
acc.add_resolution(ctx, name.to_string(), &res)
});
}
#[cfg(test)]
mod tests {
use crate::completion::{test_utils::do_completion, CompletionItem, CompletionKind};
use insta::assert_debug_snapshot;
fn complete(code: &str) -> Vec<CompletionItem> {
do_completion(code, CompletionKind::Reference)
}
#[test]
fn completes_enum_variants_and_modules() {
let completions = complete(
r"
enum E { X }
use self::E::X;
const Z: E = E::X;
mod m {}
static FOO: E = E::X;
struct Bar { f: u32 }
fn foo() {
match E::X {
<|>
}
}
",
);
assert_debug_snapshot!(completions, @r###"
[
CompletionItem {
label: "Bar",
source_range: 246..246,
delete: 246..246,
insert: "Bar",
kind: Struct,
},
CompletionItem {
label: "E",
source_range: 246..246,
delete: 246..246,
insert: "E",
kind: Enum,
},
CompletionItem {
label: "X",
source_range: 246..246,
delete: 246..246,
insert: "X",
kind: EnumVariant,
detail: "()",
},
CompletionItem {
label: "Z",
source_range: 246..246,
delete: 246..246,
insert: "Z",
kind: Const,
},
CompletionItem {
label: "m",
source_range: 246..246,
delete: 246..246,
insert: "m",
kind: Module,
},
]
"###);
}
#[test]
fn completes_in_simple_macro_call() {
let completions = complete(
r"
macro_rules! m { ($e:expr) => { $e } }
enum E { X }
fn foo() {
m!(match E::X {
<|>
})
}
",
);
assert_debug_snapshot!(completions, @r###"
[
CompletionItem {
label: "E",
source_range: 151..151,
delete: 151..151,
insert: "E",
kind: Enum,
},
CompletionItem {
label: "m!(…)",
source_range: 151..151,
delete: 151..151,
insert: "m!($0)",
kind: Macro,
detail: "macro_rules! m",
},
]
"###);
}
}
|
