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|
use join_to_string::join;
use hir::{Docs, Resolution};
use ra_syntax::AstNode;
use test_utils::tested_by;
use crate::completion::{CompletionItem, CompletionItemKind, Completions, CompletionKind, CompletionContext};
pub(super) fn complete_path(acc: &mut Completions, ctx: &CompletionContext) {
let path = match &ctx.path_prefix {
Some(path) => path.clone(),
_ => return,
};
let def = match ctx.resolver.resolve_path(ctx.db, &path).take_types() {
Some(Resolution::Def(def)) => def,
_ => return,
};
match def {
hir::ModuleDef::Module(module) => {
let module_scope = module.scope(ctx.db);
for (name, res) in module_scope.entries() {
if Some(module) == ctx.module {
if let Some(import) = res.import {
let path = module.import_source(ctx.db, import);
if path.syntax().range().contains_inclusive(ctx.offset) {
// for `use self::foo<|>`, don't suggest `foo` as a completion
tested_by!(dont_complete_current_use);
continue;
}
}
}
CompletionItem::new(
CompletionKind::Reference,
ctx.source_range(),
name.to_string(),
)
.from_resolution(ctx, &res.def.map(hir::Resolution::Def))
.add_to(acc);
}
}
hir::ModuleDef::Enum(e) => {
e.variants(ctx.db).into_iter().for_each(|variant| {
if let Some(name) = variant.name(ctx.db) {
let detail_types =
variant.fields(ctx.db).into_iter().map(|field| field.ty(ctx.db));
let detail =
join(detail_types).separator(", ").surround_with("(", ")").to_string();
CompletionItem::new(
CompletionKind::Reference,
ctx.source_range(),
name.to_string(),
)
.kind(CompletionItemKind::EnumVariant)
.set_documentation(variant.docs(ctx.db))
.set_detail(Some(detail))
.add_to(acc)
}
});
}
_ => return,
};
}
#[cfg(test)]
mod tests {
use crate::completion::{
CompletionKind,
completion_item::{check_completion, do_completion},
};
use test_utils::covers;
fn check_reference_completion(code: &str, expected_completions: &str) {
check_completion(code, expected_completions, CompletionKind::Reference);
}
#[test]
fn dont_complete_current_use() {
covers!(dont_complete_current_use);
let completions = do_completion(r"use self::foo<|>;", CompletionKind::Reference);
assert!(completions.is_empty());
}
#[test]
fn completes_mod_with_docs() {
check_reference_completion(
"mod_with_docs",
r"
use self::my<|>;
/// Some simple
/// docs describing `mod my`.
mod my {
struct Bar;
}
",
);
}
#[test]
fn completes_use_item_starting_with_self() {
check_reference_completion(
"use_item_starting_with_self",
r"
use self::m::<|>;
mod m {
struct Bar;
}
",
);
}
#[test]
fn completes_use_item_starting_with_crate() {
check_reference_completion(
"use_item_starting_with_crate",
"
//- /lib.rs
mod foo;
struct Spam;
//- /foo.rs
use crate::Sp<|>
",
);
}
#[test]
fn completes_nested_use_tree() {
check_reference_completion(
"nested_use_tree",
"
//- /lib.rs
mod foo;
struct Spam;
//- /foo.rs
use crate::{Sp<|>};
",
);
}
#[test]
fn completes_deeply_nested_use_tree() {
check_reference_completion(
"deeply_nested_use_tree",
"
//- /lib.rs
mod foo;
pub mod bar {
pub mod baz {
pub struct Spam;
}
}
//- /foo.rs
use crate::{bar::{baz::Sp<|>}};
",
);
}
#[test]
fn completes_enum_variant() {
check_reference_completion(
"enum_variant",
"
//- /lib.rs
/// An enum
enum E {
/// Foo Variant
Foo,
/// Bar Variant with i32
Bar(i32)
}
fn foo() { let _ = E::<|> }
",
);
}
#[test]
fn completes_enum_variant_with_details() {
check_reference_completion(
"enum_variant_with_details",
"
//- /lib.rs
struct S { field: u32 }
/// An enum
enum E {
/// Foo Variant (empty)
Foo,
/// Bar Variant with i32 and u32
Bar(i32, u32),
///
S(S),
}
fn foo() { let _ = E::<|> }
",
);
}
#[test]
fn completes_use_paths_across_crates() {
check_reference_completion(
"completes_use_paths_across_crates",
"
//- /main.rs
use foo::<|>;
//- /foo/lib.rs
pub mod bar {
pub struct S;
}
",
);
}
}
|
