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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, AstNode};
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, PartialEq, Eq, Hash)]
pub struct ItemLoc<N: AstNode> {
pub container: ContainerId,
pub ast_id: AstId<N>,
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct AssocItemLoc<N: AstNode> {
pub container: AssocContainerId,
pub ast_id: AstId<N>,
}
macro_rules! impl_intern {
($id:ident, $loc:ident, $intern:ident, $lookup:ident) => {
impl_intern_key!($id);
impl Intern for $loc {
type ID = $id;
fn intern(self, db: &impl db::DefDatabase) -> $id {
db.$intern(self)
}
}
impl Lookup for $id {
type Data = $loc;
fn lookup(&self, db: &impl db::DefDatabase) -> $loc {
db.$lookup(*self)
}
}
};
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct FunctionId(salsa::InternId);
type FunctionLoc = AssocItemLoc<ast::FnDef>;
impl_intern!(FunctionId, FunctionLoc, intern_function, lookup_intern_function);
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct StructId(salsa::InternId);
type StructLoc = ItemLoc<ast::StructDef>;
impl_intern!(StructId, StructLoc, intern_struct, lookup_intern_struct);
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct UnionId(salsa::InternId);
pub type UnionLoc = ItemLoc<ast::UnionDef>;
impl_intern!(UnionId, UnionLoc, intern_union, lookup_intern_union);
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct EnumId(salsa::InternId);
pub type EnumLoc = ItemLoc<ast::EnumDef>;
impl_intern!(EnumId, EnumLoc, intern_enum, lookup_intern_enum);
// 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);
type ConstLoc = AssocItemLoc<ast::ConstDef>;
impl_intern!(ConstId, ConstLoc, intern_const, lookup_intern_const);
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct StaticId(salsa::InternId);
pub type StaticLoc = ItemLoc<ast::StaticDef>;
impl_intern!(StaticId, StaticLoc, intern_static, lookup_intern_static);
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct TraitId(salsa::InternId);
pub type TraitLoc = ItemLoc<ast::TraitDef>;
impl_intern!(TraitId, TraitLoc, intern_trait, lookup_intern_trait);
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct TypeAliasId(salsa::InternId);
type TypeAliasLoc = AssocItemLoc<ast::TypeAliasDef>;
impl_intern!(TypeAliasId, TypeAliasLoc, intern_type_alias, lookup_intern_type_alias);
#[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)
}
}
#[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);
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 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.module(db),
}
}
}
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,
}
.module(db)
}
}
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.module(db),
GenericDefId::TypeAliasId(it) => it.lookup(db).module(db),
GenericDefId::ImplId(it) => it.lookup(db).container,
GenericDefId::EnumVariantId(it) => it.parent.lookup(db).container.module(db),
GenericDefId::ConstId(it) => it.lookup(db).module(db),
}
}
}
impl HasModule for StaticLoc {
fn module(&self, db: &impl db::DefDatabase) -> ModuleId {
self.container.module(db)
}
}
|