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|
//! `hir_def` crate contains everything between macro expansion and type
//! inference.
//!
//! It defines various items (structs, enums, traits) which comprises Rust code,
//! as well as an algorithm for resolving paths to such entities.
//!
//! Note that `hir_def` is a work in progress, so not all of the above is
//! actually true.
pub mod db;
pub mod attr;
pub mod path;
pub mod type_ref;
pub mod builtin_type;
pub mod diagnostics;
pub mod per_ns;
pub mod dyn_map;
pub mod keys;
pub mod adt;
pub mod data;
pub mod generics;
pub mod lang_item;
pub mod docs;
pub mod expr;
pub mod body;
pub mod resolver;
mod trace;
pub mod nameres;
pub mod src;
pub mod child_by_source;
#[cfg(test)]
mod test_db;
#[cfg(test)]
mod marks;
use std::hash::Hash;
use hir_expand::{ast_id_map::FileAstId, AstId, HirFileId, InFile, MacroDefId};
use ra_arena::{impl_arena_id, RawId};
use ra_db::{impl_intern_key, salsa, CrateId};
use ra_syntax::ast;
use crate::builtin_type::BuiltinType;
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct LocalImportId(RawId);
impl_arena_id!(LocalImportId);
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct ModuleId {
pub krate: CrateId,
pub local_id: LocalModuleId,
}
/// An ID of a module, **local** to a specific crate
// FIXME: rename to `LocalModuleId`.
#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub struct LocalModuleId(RawId);
impl_arena_id!(LocalModuleId);
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct FunctionId(salsa::InternId);
impl_intern_key!(FunctionId);
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct FunctionLoc {
pub container: AssocContainerId,
pub ast_id: AstId<ast::FnDef>,
}
impl Intern for FunctionLoc {
type ID = FunctionId;
fn intern(self, db: &impl db::DefDatabase) -> FunctionId {
db.intern_function(self)
}
}
impl Lookup for FunctionId {
type Data = FunctionLoc;
fn lookup(&self, db: &impl db::DefDatabase) -> FunctionLoc {
db.lookup_intern_function(*self)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct StructId(salsa::InternId);
impl_intern_key!(StructId);
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct StructLoc {
pub container: ModuleId,
pub ast_id: AstId<ast::StructDef>,
}
impl Intern for StructLoc {
type ID = StructId;
fn intern(self, db: &impl db::DefDatabase) -> StructId {
db.intern_struct(self)
}
}
impl Lookup for StructId {
type Data = StructLoc;
fn lookup(&self, db: &impl db::DefDatabase) -> StructLoc {
db.lookup_intern_struct(*self)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct UnionId(salsa::InternId);
impl_intern_key!(UnionId);
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct UnionLoc {
pub container: ModuleId,
pub ast_id: AstId<ast::UnionDef>,
}
impl Intern for UnionLoc {
type ID = UnionId;
fn intern(self, db: &impl db::DefDatabase) -> UnionId {
db.intern_union(self)
}
}
impl Lookup for UnionId {
type Data = UnionLoc;
fn lookup(&self, db: &impl db::DefDatabase) -> UnionLoc {
db.lookup_intern_union(*self)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct EnumId(salsa::InternId);
impl_intern_key!(EnumId);
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct EnumLoc {
pub container: ModuleId,
pub ast_id: AstId<ast::EnumDef>,
}
impl Intern for EnumLoc {
type ID = EnumId;
fn intern(self, db: &impl db::DefDatabase) -> EnumId {
db.intern_enum(self)
}
}
impl Lookup for EnumId {
type Data = EnumLoc;
fn lookup(&self, db: &impl db::DefDatabase) -> EnumLoc {
db.lookup_intern_enum(*self)
}
}
// FIXME: rename to `VariantId`, only enums can ave variants
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct EnumVariantId {
pub parent: EnumId,
pub local_id: LocalEnumVariantId,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct LocalEnumVariantId(RawId);
impl_arena_id!(LocalEnumVariantId);
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct StructFieldId {
pub parent: VariantId,
pub local_id: LocalStructFieldId,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct LocalStructFieldId(RawId);
impl_arena_id!(LocalStructFieldId);
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct ConstId(salsa::InternId);
impl_intern_key!(ConstId);
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct ConstLoc {
pub container: AssocContainerId,
pub ast_id: AstId<ast::ConstDef>,
}
impl Intern for ConstLoc {
type ID = ConstId;
fn intern(self, db: &impl db::DefDatabase) -> ConstId {
db.intern_const(self)
}
}
impl Lookup for ConstId {
type Data = ConstLoc;
fn lookup(&self, db: &impl db::DefDatabase) -> ConstLoc {
db.lookup_intern_const(*self)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct StaticId(salsa::InternId);
impl_intern_key!(StaticId);
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct StaticLoc {
pub container: ModuleId,
pub ast_id: AstId<ast::StaticDef>,
}
impl Intern for StaticLoc {
type ID = StaticId;
fn intern(self, db: &impl db::DefDatabase) -> StaticId {
db.intern_static(self)
}
}
impl Lookup for StaticId {
type Data = StaticLoc;
fn lookup(&self, db: &impl db::DefDatabase) -> StaticLoc {
db.lookup_intern_static(*self)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct TraitId(salsa::InternId);
impl_intern_key!(TraitId);
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct TraitLoc {
pub container: ModuleId,
pub ast_id: AstId<ast::TraitDef>,
}
impl Intern for TraitLoc {
type ID = TraitId;
fn intern(self, db: &impl db::DefDatabase) -> TraitId {
db.intern_trait(self)
}
}
impl Lookup for TraitId {
type Data = TraitLoc;
fn lookup(&self, db: &impl db::DefDatabase) -> TraitLoc {
db.lookup_intern_trait(*self)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct TypeAliasId(salsa::InternId);
impl_intern_key!(TypeAliasId);
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct TypeAliasLoc {
pub container: AssocContainerId,
pub ast_id: AstId<ast::TypeAliasDef>,
}
impl Intern for TypeAliasLoc {
type ID = TypeAliasId;
fn intern(self, db: &impl db::DefDatabase) -> TypeAliasId {
db.intern_type_alias(self)
}
}
impl Lookup for TypeAliasId {
type Data = TypeAliasLoc;
fn lookup(&self, db: &impl db::DefDatabase) -> TypeAliasLoc {
db.lookup_intern_type_alias(*self)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct ImplId(salsa::InternId);
impl_intern_key!(ImplId);
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct ImplLoc {
pub container: ModuleId,
pub ast_id: AstId<ast::ImplBlock>,
}
impl Intern for ImplLoc {
type ID = ImplId;
fn intern(self, db: &impl db::DefDatabase) -> ImplId {
db.intern_impl(self)
}
}
impl Lookup for ImplId {
type Data = ImplLoc;
fn lookup(&self, db: &impl db::DefDatabase) -> ImplLoc {
db.lookup_intern_impl(*self)
}
}
macro_rules! impl_froms {
($e:ident: $($v:ident $(($($sv:ident),*))?),*) => {
$(
impl From<$v> for $e {
fn from(it: $v) -> $e {
$e::$v(it)
}
}
$($(
impl From<$sv> for $e {
fn from(it: $sv) -> $e {
$e::$v($v::$sv(it))
}
}
)*)?
)*
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct TypeParamId {
pub parent: GenericDefId,
pub local_id: LocalTypeParamId,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct LocalTypeParamId(RawId);
impl_arena_id!(LocalTypeParamId);
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum ContainerId {
ModuleId(ModuleId),
DefWithBodyId(DefWithBodyId),
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum AssocContainerId {
ContainerId(ContainerId),
ImplId(ImplId),
TraitId(TraitId),
}
impl_froms!(AssocContainerId: ContainerId);
/// A Data Type
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
pub enum AdtId {
StructId(StructId),
UnionId(UnionId),
EnumId(EnumId),
}
impl_froms!(AdtId: StructId, UnionId, EnumId);
/// The defs which can be visible in the module.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum ModuleDefId {
ModuleId(ModuleId),
FunctionId(FunctionId),
AdtId(AdtId),
// Can't be directly declared, but can be imported.
EnumVariantId(EnumVariantId),
ConstId(ConstId),
StaticId(StaticId),
TraitId(TraitId),
TypeAliasId(TypeAliasId),
BuiltinType(BuiltinType),
}
impl_froms!(
ModuleDefId: ModuleId,
FunctionId,
AdtId(StructId, EnumId, UnionId),
EnumVariantId,
ConstId,
StaticId,
TraitId,
TypeAliasId,
BuiltinType
);
/// The defs which have a body.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum DefWithBodyId {
FunctionId(FunctionId),
StaticId(StaticId),
ConstId(ConstId),
}
impl_froms!(DefWithBodyId: FunctionId, ConstId, StaticId);
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
pub enum AssocItemId {
FunctionId(FunctionId),
ConstId(ConstId),
TypeAliasId(TypeAliasId),
}
// FIXME: not every function, ... is actually an assoc item. maybe we should make
// sure that you can only turn actual assoc items into AssocItemIds. This would
// require not implementing From, and instead having some checked way of
// casting them, and somehow making the constructors private, which would be annoying.
impl_froms!(AssocItemId: FunctionId, ConstId, TypeAliasId);
#[derive(Clone, Copy, PartialEq, Eq, Debug, Hash)]
pub enum GenericDefId {
FunctionId(FunctionId),
AdtId(AdtId),
TraitId(TraitId),
TypeAliasId(TypeAliasId),
ImplId(ImplId),
// enum variants cannot have generics themselves, but their parent enums
// can, and this makes some code easier to write
EnumVariantId(EnumVariantId),
// consts can have type parameters from their parents (i.e. associated consts of traits)
ConstId(ConstId),
}
impl_froms!(
GenericDefId: FunctionId,
AdtId(StructId, EnumId, UnionId),
TraitId,
TypeAliasId,
ImplId,
EnumVariantId,
ConstId
);
impl From<AssocItemId> for GenericDefId {
fn from(item: AssocItemId) -> Self {
match item {
AssocItemId::FunctionId(f) => f.into(),
AssocItemId::ConstId(c) => c.into(),
AssocItemId::TypeAliasId(t) => t.into(),
}
}
}
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
pub enum AttrDefId {
ModuleId(ModuleId),
StructFieldId(StructFieldId),
AdtId(AdtId),
FunctionId(FunctionId),
EnumVariantId(EnumVariantId),
StaticId(StaticId),
ConstId(ConstId),
TraitId(TraitId),
TypeAliasId(TypeAliasId),
MacroDefId(MacroDefId),
ImplId(ImplId),
}
impl_froms!(
AttrDefId: ModuleId,
StructFieldId,
AdtId(StructId, EnumId, UnionId),
EnumVariantId,
StaticId,
ConstId,
FunctionId,
TraitId,
TypeAliasId,
MacroDefId,
ImplId
);
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum VariantId {
EnumVariantId(EnumVariantId),
StructId(StructId),
UnionId(UnionId),
}
impl_froms!(VariantId: EnumVariantId, StructId);
trait Intern {
type ID;
fn intern(self, db: &impl db::DefDatabase) -> Self::ID;
}
pub trait Lookup {
type Data;
fn lookup(&self, db: &impl db::DefDatabase) -> Self::Data;
}
pub trait HasModule {
fn module(&self, db: &impl db::DefDatabase) -> ModuleId;
}
impl HasModule for ContainerId {
fn module(&self, db: &impl db::DefDatabase) -> ModuleId {
match *self {
ContainerId::ModuleId(it) => it,
ContainerId::DefWithBodyId(it) => it.module(db),
}
}
}
impl HasModule for AssocContainerId {
fn module(&self, db: &impl db::DefDatabase) -> ModuleId {
match *self {
AssocContainerId::ContainerId(it) => it.module(db),
AssocContainerId::ImplId(it) => it.lookup(db).container,
AssocContainerId::TraitId(it) => it.lookup(db).container,
}
}
}
impl HasModule for FunctionLoc {
fn module(&self, db: &impl db::DefDatabase) -> ModuleId {
self.container.module(db)
}
}
impl HasModule for TypeAliasLoc {
fn module(&self, db: &impl db::DefDatabase) -> ModuleId {
self.container.module(db)
}
}
impl HasModule for ConstLoc {
fn module(&self, db: &impl db::DefDatabase) -> ModuleId {
self.container.module(db)
}
}
impl HasModule for AdtId {
fn module(&self, db: &impl db::DefDatabase) -> ModuleId {
match self {
AdtId::StructId(it) => it.lookup(db).container,
AdtId::UnionId(it) => it.lookup(db).container,
AdtId::EnumId(it) => it.lookup(db).container,
}
}
}
impl HasModule for DefWithBodyId {
fn module(&self, db: &impl db::DefDatabase) -> ModuleId {
match self {
DefWithBodyId::FunctionId(it) => it.lookup(db).module(db),
DefWithBodyId::StaticId(it) => it.lookup(db).module(db),
DefWithBodyId::ConstId(it) => it.lookup(db).module(db),
}
}
}
impl HasModule for GenericDefId {
fn module(&self, db: &impl db::DefDatabase) -> ModuleId {
match self {
GenericDefId::FunctionId(it) => it.lookup(db).module(db),
GenericDefId::AdtId(it) => it.module(db),
GenericDefId::TraitId(it) => it.lookup(db).container,
GenericDefId::TypeAliasId(it) => it.lookup(db).module(db),
GenericDefId::ImplId(it) => it.lookup(db).container,
GenericDefId::EnumVariantId(it) => it.parent.lookup(db).container,
GenericDefId::ConstId(it) => it.lookup(db).module(db),
}
}
}
impl HasModule for StaticLoc {
fn module(&self, _db: &impl db::DefDatabase) -> ModuleId {
self.container
}
}
|