mirror of
https://github.com/rust-lang/rust-analyzer
synced 2024-12-27 05:23:24 +00:00
Cleanup hover
Take advantage of classify_name
This commit is contained in:
Jeremy Kolb
parent
bbb022d399
commit
89647f93c4
1 changed files with 93 additions and 111 deletions
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@ -5,7 +5,7 @@ use ra_db::SourceDatabase;
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use ra_syntax::{
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algo::{ancestors_at_offset, find_covering_element, find_node_at_offset},
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ast::{self, DocCommentsOwner},
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match_ast, AstNode,
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AstNode,
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};
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use crate::{
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@ -14,7 +14,7 @@ use crate::{
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description_from_symbol, docs_from_symbol, macro_label, rust_code_markup,
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rust_code_markup_with_doc, ShortLabel,
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},
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references::{classify_name_ref, NameKind::*},
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references::{classify_name, classify_name_ref, NameKind, NameKind::*},
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FilePosition, FileRange, RangeInfo,
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};
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@ -92,65 +92,88 @@ fn hover_text(docs: Option<String>, desc: Option<String>) -> Option<String> {
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}
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}
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fn hover_text_from_name_kind(
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db: &RootDatabase,
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name_kind: NameKind,
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no_fallback: &mut bool,
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) -> Option<String> {
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return match name_kind {
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Macro(it) => {
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let src = it.source(db);
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hover_text(src.ast.doc_comment_text(), Some(macro_label(&src.ast)))
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}
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Field(it) => {
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let src = it.source(db);
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match src.ast {
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hir::FieldSource::Named(it) => hover_text(it.doc_comment_text(), it.short_label()),
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_ => None,
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}
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}
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AssocItem(it) => match it {
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hir::AssocItem::Function(it) => from_def_source(db, it),
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hir::AssocItem::Const(it) => from_def_source(db, it),
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hir::AssocItem::TypeAlias(it) => from_def_source(db, it),
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},
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Def(it) => match it {
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hir::ModuleDef::Module(it) => match it.definition_source(db).ast {
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hir::ModuleSource::Module(it) => {
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hover_text(it.doc_comment_text(), it.short_label())
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}
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_ => None,
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},
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hir::ModuleDef::Function(it) => from_def_source(db, it),
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hir::ModuleDef::Adt(Adt::Struct(it)) => from_def_source(db, it),
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hir::ModuleDef::Adt(Adt::Union(it)) => from_def_source(db, it),
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hir::ModuleDef::Adt(Adt::Enum(it)) => from_def_source(db, it),
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hir::ModuleDef::EnumVariant(it) => from_def_source(db, it),
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hir::ModuleDef::Const(it) => from_def_source(db, it),
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hir::ModuleDef::Static(it) => from_def_source(db, it),
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hir::ModuleDef::Trait(it) => from_def_source(db, it),
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hir::ModuleDef::TypeAlias(it) => from_def_source(db, it),
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hir::ModuleDef::BuiltinType(it) => Some(it.to_string()),
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},
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SelfType(ty) => match ty.as_adt() {
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Some((adt_def, _)) => match adt_def {
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hir::Adt::Struct(it) => from_def_source(db, it),
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hir::Adt::Union(it) => from_def_source(db, it),
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hir::Adt::Enum(it) => from_def_source(db, it),
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},
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_ => None,
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},
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Local(_) => {
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// Hover for these shows type names
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*no_fallback = true;
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None
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}
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GenericParam(_) => {
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// FIXME: Hover for generic param
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None
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}
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};
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fn from_def_source<A, D>(db: &RootDatabase, def: D) -> Option<String>
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where
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D: HasSource<Ast = A>,
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A: ast::DocCommentsOwner + ast::NameOwner + ShortLabel,
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{
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let src = def.source(db);
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hover_text(src.ast.doc_comment_text(), src.ast.short_label())
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}
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}
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pub(crate) fn hover(db: &RootDatabase, position: FilePosition) -> Option<RangeInfo<HoverResult>> {
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let parse = db.parse(position.file_id);
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let file = parse.tree();
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let mut res = HoverResult::new();
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let mut range = None;
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if let Some(name_ref) = find_node_at_offset::<ast::NameRef>(file.syntax(), position.offset) {
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let mut range = if let Some(name_ref) =
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find_node_at_offset::<ast::NameRef>(file.syntax(), position.offset)
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{
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let mut no_fallback = false;
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let name_kind = classify_name_ref(db, position.file_id, &name_ref).map(|d| d.kind);
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match name_kind {
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Some(Macro(it)) => {
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let src = it.source(db);
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res.extend(hover_text(src.ast.doc_comment_text(), Some(macro_label(&src.ast))));
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}
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Some(Field(it)) => {
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let src = it.source(db);
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if let hir::FieldSource::Named(it) = src.ast {
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res.extend(hover_text(it.doc_comment_text(), it.short_label()));
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}
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}
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Some(AssocItem(it)) => res.extend(match it {
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hir::AssocItem::Function(it) => from_def_source(db, it),
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hir::AssocItem::Const(it) => from_def_source(db, it),
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hir::AssocItem::TypeAlias(it) => from_def_source(db, it),
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}),
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Some(Def(it)) => match it {
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hir::ModuleDef::Module(it) => {
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if let hir::ModuleSource::Module(it) = it.definition_source(db).ast {
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res.extend(hover_text(it.doc_comment_text(), it.short_label()))
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}
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}
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hir::ModuleDef::Function(it) => res.extend(from_def_source(db, it)),
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hir::ModuleDef::Adt(Adt::Struct(it)) => res.extend(from_def_source(db, it)),
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hir::ModuleDef::Adt(Adt::Union(it)) => res.extend(from_def_source(db, it)),
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hir::ModuleDef::Adt(Adt::Enum(it)) => res.extend(from_def_source(db, it)),
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hir::ModuleDef::EnumVariant(it) => res.extend(from_def_source(db, it)),
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hir::ModuleDef::Const(it) => res.extend(from_def_source(db, it)),
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hir::ModuleDef::Static(it) => res.extend(from_def_source(db, it)),
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hir::ModuleDef::Trait(it) => res.extend(from_def_source(db, it)),
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hir::ModuleDef::TypeAlias(it) => res.extend(from_def_source(db, it)),
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hir::ModuleDef::BuiltinType(it) => res.extend(Some(it.to_string())),
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},
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Some(SelfType(ty)) => {
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if let Some((adt_def, _)) = ty.as_adt() {
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res.extend(match adt_def {
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hir::Adt::Struct(it) => from_def_source(db, it),
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hir::Adt::Union(it) => from_def_source(db, it),
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hir::Adt::Enum(it) => from_def_source(db, it),
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})
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}
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}
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Some(Local(_)) => {
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// Hover for these shows type names
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no_fallback = true;
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}
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Some(GenericParam(_)) => {
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// FIXME: Hover for generic param
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}
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None => {}
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if let Some(name_kind) = classify_name_ref(db, position.file_id, &name_ref).map(|d| d.kind)
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{
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res.extend(hover_text_from_name_kind(db, name_kind, &mut no_fallback))
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}
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if res.is_empty() && !no_fallback {
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@ -164,55 +187,24 @@ pub(crate) fn hover(db: &RootDatabase, position: FilePosition) -> Option<RangeIn
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}
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if !res.is_empty() {
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range = Some(name_ref.syntax().text_range())
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Some(name_ref.syntax().text_range())
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} else {
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None
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}
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} else if let Some(name) = find_node_at_offset::<ast::Name>(file.syntax(), position.offset) {
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if let Some(parent) = name.syntax().parent() {
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let text = match_ast! {
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match parent {
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ast::StructDef(it) => {
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hover_text(it.doc_comment_text(), it.short_label())
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},
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ast::EnumDef(it) => {
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hover_text(it.doc_comment_text(), it.short_label())
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},
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ast::EnumVariant(it) => {
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hover_text(it.doc_comment_text(), it.short_label())
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},
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ast::FnDef(it) => {
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hover_text(it.doc_comment_text(), it.short_label())
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},
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ast::TypeAliasDef(it) => {
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hover_text(it.doc_comment_text(), it.short_label())
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},
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ast::ConstDef(it) => {
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hover_text(it.doc_comment_text(), it.short_label())
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},
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ast::StaticDef(it) => {
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hover_text(it.doc_comment_text(), it.short_label())
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},
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ast::TraitDef(it) => {
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hover_text(it.doc_comment_text(), it.short_label())
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},
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ast::RecordFieldDef(it) => {
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hover_text(it.doc_comment_text(), it.short_label())
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},
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ast::Module(it) => {
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hover_text(it.doc_comment_text(), it.short_label())
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},
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ast::MacroCall(it) => {
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hover_text(it.doc_comment_text(), None)
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},
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_ => None,
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}
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};
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res.extend(text);
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if let Some(name_kind) = classify_name(db, position.file_id, &name).map(|d| d.kind) {
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let mut _b: bool = true;
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res.extend(hover_text_from_name_kind(db, name_kind, &mut _b));
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}
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if !res.is_empty() && range.is_none() {
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range = Some(name.syntax().text_range());
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if !res.is_empty() {
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Some(name.syntax().text_range())
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} else {
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None
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}
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}
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} else {
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None
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};
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if range.is_none() {
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let node = ancestors_at_offset(file.syntax(), position.offset).find(|n| {
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@ -221,23 +213,13 @@ pub(crate) fn hover(db: &RootDatabase, position: FilePosition) -> Option<RangeIn
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let frange = FileRange { file_id: position.file_id, range: node.text_range() };
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res.extend(type_of(db, frange).map(rust_code_markup));
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range = Some(node.text_range());
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}
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};
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let range = range?;
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if res.is_empty() {
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return None;
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}
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let res = RangeInfo::new(range, res);
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return Some(res);
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fn from_def_source<A, D>(db: &RootDatabase, def: D) -> Option<String>
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where
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D: HasSource<Ast = A>,
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A: ast::DocCommentsOwner + ast::NameOwner + ShortLabel,
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{
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let src = def.source(db);
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hover_text(src.ast.doc_comment_text(), src.ast.short_label())
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}
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Some(RangeInfo::new(range, res))
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}
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pub(crate) fn type_of(db: &RootDatabase, frange: FileRange) -> Option<String> {
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