From 271017e6bf5b5f46464d09db7fc869c92998fc80 Mon Sep 17 00:00:00 2001 From: Aleksey Kladov Date: Thu, 6 Feb 2020 16:23:28 +0100 Subject: Move NameKind up --- crates/ra_ide_db/src/defs.rs | 194 +++++++++++++++++++++++++++++++++++++++++++ crates/ra_ide_db/src/lib.rs | 1 + 2 files changed, 195 insertions(+) create mode 100644 crates/ra_ide_db/src/defs.rs (limited to 'crates/ra_ide_db/src') diff --git a/crates/ra_ide_db/src/defs.rs b/crates/ra_ide_db/src/defs.rs new file mode 100644 index 000000000..1c983fb60 --- /dev/null +++ b/crates/ra_ide_db/src/defs.rs @@ -0,0 +1,194 @@ +//! `NameDefinition` keeps information about the element we want to search references for. +//! The element is represented by `NameKind`. It's located inside some `container` and +//! has a `visibility`, which defines a search scope. +//! Note that the reference search is possible for not all of the classified items. + +use hir::{ + Adt, AssocItem, HasSource, ImplBlock, InFile, Local, MacroDef, Module, ModuleDef, SourceBinder, + StructField, TypeParam, VariantDef, +}; +use ra_prof::profile; +use ra_syntax::{ + ast::{self, AstNode, VisibilityOwner}, + match_ast, +}; + +use crate::RootDatabase; + +#[derive(Debug, PartialEq, Eq)] +pub enum NameKind { + Macro(MacroDef), + Field(StructField), + AssocItem(AssocItem), + Def(ModuleDef), + SelfType(ImplBlock), + Local(Local), + TypeParam(TypeParam), +} + +#[derive(PartialEq, Eq)] +pub struct NameDefinition { + pub visibility: Option, + /// FIXME: this doesn't really make sense. For example, builtin types don't + /// really have a module. + pub container: Module, + pub kind: NameKind, +} + +pub fn classify_name( + sb: &mut SourceBinder, + name: InFile<&ast::Name>, +) -> Option { + let _p = profile("classify_name"); + let parent = name.value.syntax().parent()?; + + match_ast! { + match parent { + ast::BindPat(it) => { + let src = name.with_value(it); + let local = sb.to_def(src)?; + Some(NameDefinition { + visibility: None, + container: local.module(sb.db), + kind: NameKind::Local(local), + }) + }, + ast::RecordFieldDef(it) => { + let src = name.with_value(it); + let field: hir::StructField = sb.to_def(src)?; + Some(from_struct_field(sb.db, field)) + }, + ast::Module(it) => { + let def = sb.to_def(name.with_value(it))?; + Some(from_module_def(sb.db, def.into(), None)) + }, + ast::StructDef(it) => { + let src = name.with_value(it); + let def: hir::Struct = sb.to_def(src)?; + Some(from_module_def(sb.db, def.into(), None)) + }, + ast::EnumDef(it) => { + let src = name.with_value(it); + let def: hir::Enum = sb.to_def(src)?; + Some(from_module_def(sb.db, def.into(), None)) + }, + ast::TraitDef(it) => { + let src = name.with_value(it); + let def: hir::Trait = sb.to_def(src)?; + Some(from_module_def(sb.db, def.into(), None)) + }, + ast::StaticDef(it) => { + let src = name.with_value(it); + let def: hir::Static = sb.to_def(src)?; + Some(from_module_def(sb.db, def.into(), None)) + }, + ast::EnumVariant(it) => { + let src = name.with_value(it); + let def: hir::EnumVariant = sb.to_def(src)?; + Some(from_module_def(sb.db, def.into(), None)) + }, + ast::FnDef(it) => { + let src = name.with_value(it); + let def: hir::Function = sb.to_def(src)?; + if parent.parent().and_then(ast::ItemList::cast).is_some() { + Some(from_assoc_item(sb.db, def.into())) + } else { + Some(from_module_def(sb.db, def.into(), None)) + } + }, + ast::ConstDef(it) => { + let src = name.with_value(it); + let def: hir::Const = sb.to_def(src)?; + if parent.parent().and_then(ast::ItemList::cast).is_some() { + Some(from_assoc_item(sb.db, def.into())) + } else { + Some(from_module_def(sb.db, def.into(), None)) + } + }, + ast::TypeAliasDef(it) => { + let src = name.with_value(it); + let def: hir::TypeAlias = sb.to_def(src)?; + if parent.parent().and_then(ast::ItemList::cast).is_some() { + Some(from_assoc_item(sb.db, def.into())) + } else { + Some(from_module_def(sb.db, def.into(), None)) + } + }, + ast::MacroCall(it) => { + let src = name.with_value(it); + let def = sb.to_def(src.clone())?; + + let module = sb.to_module_def(src.file_id.original_file(sb.db))?; + + Some(NameDefinition { + visibility: None, + container: module, + kind: NameKind::Macro(def), + }) + }, + ast::TypeParam(it) => { + let src = name.with_value(it); + let def = sb.to_def(src)?; + Some(NameDefinition { + visibility: None, + container: def.module(sb.db), + kind: NameKind::TypeParam(def), + }) + }, + _ => None, + } + } +} + +pub fn from_assoc_item(db: &RootDatabase, item: AssocItem) -> NameDefinition { + let container = item.module(db); + let visibility = match item { + AssocItem::Function(f) => f.source(db).value.visibility(), + AssocItem::Const(c) => c.source(db).value.visibility(), + AssocItem::TypeAlias(a) => a.source(db).value.visibility(), + }; + let kind = NameKind::AssocItem(item); + NameDefinition { kind, container, visibility } +} + +pub fn from_struct_field(db: &RootDatabase, field: StructField) -> NameDefinition { + let kind = NameKind::Field(field); + let parent = field.parent_def(db); + let container = parent.module(db); + let visibility = match parent { + VariantDef::Struct(s) => s.source(db).value.visibility(), + VariantDef::Union(e) => e.source(db).value.visibility(), + VariantDef::EnumVariant(e) => e.source(db).value.parent_enum().visibility(), + }; + NameDefinition { kind, container, visibility } +} + +pub fn from_module_def( + db: &RootDatabase, + def: ModuleDef, + module: Option, +) -> NameDefinition { + let kind = NameKind::Def(def); + let (container, visibility) = match def { + ModuleDef::Module(it) => { + let container = it.parent(db).or_else(|| Some(it)).unwrap(); + let visibility = it.declaration_source(db).and_then(|s| s.value.visibility()); + (container, visibility) + } + ModuleDef::EnumVariant(it) => { + let container = it.module(db); + let visibility = it.source(db).value.parent_enum().visibility(); + (container, visibility) + } + ModuleDef::Function(it) => (it.module(db), it.source(db).value.visibility()), + ModuleDef::Const(it) => (it.module(db), it.source(db).value.visibility()), + ModuleDef::Static(it) => (it.module(db), it.source(db).value.visibility()), + ModuleDef::Trait(it) => (it.module(db), it.source(db).value.visibility()), + ModuleDef::TypeAlias(it) => (it.module(db), it.source(db).value.visibility()), + ModuleDef::Adt(Adt::Struct(it)) => (it.module(db), it.source(db).value.visibility()), + ModuleDef::Adt(Adt::Union(it)) => (it.module(db), it.source(db).value.visibility()), + ModuleDef::Adt(Adt::Enum(it)) => (it.module(db), it.source(db).value.visibility()), + ModuleDef::BuiltinType(..) => (module.unwrap(), None), + }; + NameDefinition { kind, container, visibility } +} diff --git a/crates/ra_ide_db/src/lib.rs b/crates/ra_ide_db/src/lib.rs index e922d1e5f..0715dfc66 100644 --- a/crates/ra_ide_db/src/lib.rs +++ b/crates/ra_ide_db/src/lib.rs @@ -7,6 +7,7 @@ pub mod line_index_utils; pub mod feature_flags; pub mod symbol_index; pub mod change; +pub mod defs; mod wasm_shims; use std::sync::Arc; -- cgit v1.2.3