2179: Use HirDatabase to compute `is_deprecated` r=matklad a=martskins

This PR fixes #2167 by introducing `attributes_query` and adding `fn attrs(&self, def: crate::AttrDef) -> Option<Arc<[Attr]>>;`  to the `DefDatabase` trait.

I'm a little concerned about the two spots in `attributes_query` where code is repeated, but I couldn't figure out a way to avoid that, so.. I welcome suggestions 😄 



Co-authored-by: Martin Asquino <martin.asquino@gmail.com>
This commit is contained in:
bors[bot] 2019-11-06 21:11:42 +00:00 committed by GitHub
commit 14e19c0df1
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5 changed files with 111 additions and 14 deletions

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@ -1,8 +1,8 @@
//! This modules takes care of rendering various definitions as completion items.
use hir::{db::HirDatabase, Docs, HasSource, HirDisplay, ScopeDef, Ty, TypeWalk};
use hir::{db::HirDatabase, Attrs, Docs, HasSource, HirDisplay, ScopeDef, Ty, TypeWalk};
use join_to_string::join;
use ra_syntax::ast::{AttrsOwner, NameOwner};
use ra_syntax::ast::NameOwner;
use test_utils::tested_by;
use crate::completion::{
@ -18,11 +18,7 @@ impl Completions {
field: hir::StructField,
substs: &hir::Substs,
) {
let ast_node = field.source(ctx.db).ast;
let is_deprecated = match ast_node {
hir::FieldSource::Named(m) => is_deprecated(m),
hir::FieldSource::Pos(m) => is_deprecated(m),
};
let is_deprecated = is_deprecated(field, ctx.db);
CompletionItem::new(
CompletionKind::Reference,
ctx.source_range(),
@ -185,7 +181,7 @@ impl Completions {
CompletionItem::new(CompletionKind::Reference, ctx.source_range(), &macro_declaration)
.kind(CompletionItemKind::Macro)
.set_documentation(docs.clone())
.set_deprecated(is_deprecated(ast_node))
.set_deprecated(is_deprecated(macro_, ctx.db))
.detail(detail);
builder = if ctx.use_item_syntax.is_some() {
@ -218,7 +214,7 @@ impl Completions {
CompletionItemKind::Function
})
.set_documentation(func.docs(ctx.db))
.set_deprecated(is_deprecated(ast_node))
.set_deprecated(is_deprecated(func, ctx.db))
.detail(detail);
// Add `<>` for generic types
@ -250,7 +246,7 @@ impl Completions {
CompletionItem::new(CompletionKind::Reference, ctx.source_range(), name.text().to_string())
.kind(CompletionItemKind::Const)
.set_documentation(constant.docs(ctx.db))
.set_deprecated(is_deprecated(ast_node))
.set_deprecated(is_deprecated(constant, ctx.db))
.detail(detail)
.add_to(self);
}
@ -266,13 +262,13 @@ impl Completions {
CompletionItem::new(CompletionKind::Reference, ctx.source_range(), name.text().to_string())
.kind(CompletionItemKind::TypeAlias)
.set_documentation(type_alias.docs(ctx.db))
.set_deprecated(is_deprecated(type_def))
.set_deprecated(is_deprecated(type_alias, ctx.db))
.detail(detail)
.add_to(self);
}
pub(crate) fn add_enum_variant(&mut self, ctx: &CompletionContext, variant: hir::EnumVariant) {
let is_deprecated = is_deprecated(variant.source(ctx.db).ast);
let is_deprecated = is_deprecated(variant, ctx.db);
let name = match variant.name(ctx.db) {
Some(it) => it,
None => return,
@ -291,8 +287,11 @@ impl Completions {
}
}
fn is_deprecated(node: impl AttrsOwner) -> bool {
node.attrs().filter_map(|x| x.simple_name()).any(|x| x == "deprecated")
fn is_deprecated(node: impl Attrs, db: &impl HirDatabase) -> bool {
match node.attrs(db) {
None => false,
Some(attrs) => attrs.iter().any(|x| x.is_simple_atom("deprecated")),
}
}
fn has_non_default_type_params(def: hir::GenericDef, db: &db::RootDatabase) -> bool {