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|
use std::sync::Arc;
use relative_path::RelativePathBuf;
use ra_db::{CrateId, SourceRootId, Edition};
use ra_syntax::{ast::self, TreeArc, SyntaxNode};
use crate::{
Name, ScopesWithSourceMap, Ty, HirFileId,
HirDatabase, DefDatabase,
type_ref::TypeRef,
nameres::{ModuleScope, Namespace, ImportId, CrateModuleId},
expr::{Body, BodySourceMap},
ty::InferenceResult,
adt::{EnumVariantId, StructFieldId, VariantDef},
generics::GenericParams,
docs::{Documentation, Docs, docs_from_ast},
ids::{FunctionId, StructId, EnumId, AstItemDef, ConstId, StaticId, TraitId, TypeId},
impl_block::ImplBlock,
resolve::Resolver,
};
/// hir::Crate describes a single crate. It's the main interface with which
/// a crate's dependencies interact. Mostly, it should be just a proxy for the
/// root module.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct Crate {
pub(crate) crate_id: CrateId,
}
#[derive(Debug)]
pub struct CrateDependency {
pub krate: Crate,
pub name: Name,
}
impl Crate {
pub fn crate_id(&self) -> CrateId {
self.crate_id
}
pub fn dependencies(&self, db: &impl DefDatabase) -> Vec<CrateDependency> {
self.dependencies_impl(db)
}
pub fn root_module(&self, db: &impl DefDatabase) -> Option<Module> {
self.root_module_impl(db)
}
pub fn edition(&self, db: &impl DefDatabase) -> Edition {
let crate_graph = db.crate_graph();
crate_graph.edition(self.crate_id)
}
// FIXME: should this be in source_binder?
pub fn source_root_crates(db: &impl DefDatabase, source_root: SourceRootId) -> Vec<Crate> {
let crate_ids = db.source_root_crates(source_root);
crate_ids.iter().map(|&crate_id| Crate { crate_id }).collect()
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct Module {
pub(crate) krate: Crate,
pub(crate) module_id: CrateModuleId,
}
/// The defs which can be visible in the module.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum ModuleDef {
Module(Module),
Function(Function),
Struct(Struct),
Enum(Enum),
// Can't be directly declared, but can be imported.
EnumVariant(EnumVariant),
Const(Const),
Static(Static),
Trait(Trait),
TypeAlias(TypeAlias),
}
impl_froms!(
ModuleDef: Module,
Function,
Struct,
Enum,
EnumVariant,
Const,
Static,
Trait,
TypeAlias
);
pub enum ModuleSource {
SourceFile(TreeArc<ast::SourceFile>),
Module(TreeArc<ast::Module>),
}
#[derive(Clone, Debug, Hash, PartialEq, Eq)]
pub enum Problem {
UnresolvedModule { candidate: RelativePathBuf },
NotDirOwner { move_to: RelativePathBuf, candidate: RelativePathBuf },
}
impl Module {
/// Name of this module.
pub fn name(&self, db: &impl HirDatabase) -> Option<Name> {
self.name_impl(db)
}
/// Returns a node which defines this module. That is, a file or a `mod foo {}` with items.
pub fn definition_source(&self, db: &impl DefDatabase) -> (HirFileId, ModuleSource) {
self.definition_source_impl(db)
}
/// Returns a node which declares this module, either a `mod foo;` or a `mod foo {}`.
/// `None` for the crate root.
pub fn declaration_source(
&self,
db: &impl HirDatabase,
) -> Option<(HirFileId, TreeArc<ast::Module>)> {
self.declaration_source_impl(db)
}
/// Returns the syntax of the last path segment corresponding to this import
pub fn import_source(
&self,
db: &impl HirDatabase,
import: ImportId,
) -> TreeArc<ast::PathSegment> {
self.import_source_impl(db, import)
}
/// Returns the crate this module is part of.
pub fn krate(&self, _db: &impl DefDatabase) -> Option<Crate> {
Some(self.krate)
}
/// Topmost parent of this module. Every module has a `crate_root`, but some
/// might be missing `krate`. This can happen if a module's file is not included
/// in the module tree of any target in `Cargo.toml`.
pub fn crate_root(&self, db: &impl DefDatabase) -> Module {
self.crate_root_impl(db)
}
/// Finds a child module with the specified name.
pub fn child(&self, db: &impl HirDatabase, name: &Name) -> Option<Module> {
self.child_impl(db, name)
}
/// Iterates over all child modules.
pub fn children(&self, db: &impl DefDatabase) -> impl Iterator<Item = Module> {
self.children_impl(db)
}
/// Finds a parent module.
pub fn parent(&self, db: &impl DefDatabase) -> Option<Module> {
self.parent_impl(db)
}
pub fn path_to_root(&self, db: &impl HirDatabase) -> Vec<Module> {
let mut res = vec![self.clone()];
let mut curr = self.clone();
while let Some(next) = curr.parent(db) {
res.push(next.clone());
curr = next
}
res
}
/// Returns a `ModuleScope`: a set of items, visible in this module.
pub fn scope(&self, db: &impl HirDatabase) -> ModuleScope {
db.crate_def_map(self.krate)[self.module_id].scope.clone()
}
pub fn problems(&self, db: &impl HirDatabase) -> Vec<(TreeArc<SyntaxNode>, Problem)> {
self.problems_impl(db)
}
pub fn resolver(&self, db: &impl HirDatabase) -> Resolver {
let def_map = db.crate_def_map(self.krate);
Resolver::default().push_module_scope(def_map, self.module_id)
}
pub fn declarations(self, db: &impl HirDatabase) -> Vec<ModuleDef> {
let def_map = db.crate_def_map(self.krate);
def_map[self.module_id]
.scope
.entries()
.filter_map(|(_name, res)| if res.import.is_none() { Some(res.def) } else { None })
.flat_map(|per_ns| {
per_ns.take_types().into_iter().chain(per_ns.take_values().into_iter())
})
.collect()
}
pub fn impl_blocks(self, db: &impl HirDatabase) -> Vec<ImplBlock> {
let module_impl_blocks = db.impls_in_module(self);
module_impl_blocks
.impls
.iter()
.map(|(impl_id, _)| ImplBlock::from_id(self, impl_id))
.collect()
}
}
impl Docs for Module {
fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
self.declaration_source(db).and_then(|it| docs_from_ast(&*it.1))
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct StructField {
pub(crate) parent: VariantDef,
pub(crate) id: StructFieldId,
}
#[derive(Debug)]
pub enum FieldSource {
Named(TreeArc<ast::NamedFieldDef>),
Pos(TreeArc<ast::PosFieldDef>),
}
impl StructField {
pub fn name(&self, db: &impl HirDatabase) -> Name {
self.parent.variant_data(db).fields().unwrap()[self.id].name.clone()
}
pub fn source(&self, db: &impl DefDatabase) -> (HirFileId, FieldSource) {
self.source_impl(db)
}
pub fn ty(&self, db: &impl HirDatabase) -> Ty {
db.type_for_field(*self)
}
pub fn parent_def(&self, _db: &impl HirDatabase) -> VariantDef {
self.parent
}
}
impl Docs for StructField {
fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
match self.source(db).1 {
FieldSource::Named(named) => docs_from_ast(&*named),
FieldSource::Pos(..) => return None,
}
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct Struct {
pub(crate) id: StructId,
}
impl Struct {
pub fn source(&self, db: &impl DefDatabase) -> (HirFileId, TreeArc<ast::StructDef>) {
self.id.source(db)
}
pub fn module(&self, db: &impl HirDatabase) -> Module {
self.id.module(db)
}
pub fn name(&self, db: &impl HirDatabase) -> Option<Name> {
db.struct_data(*self).name.clone()
}
pub fn fields(&self, db: &impl HirDatabase) -> Vec<StructField> {
db.struct_data(*self)
.variant_data
.fields()
.into_iter()
.flat_map(|it| it.iter())
.map(|(id, _)| StructField { parent: (*self).into(), id })
.collect()
}
pub fn field(&self, db: &impl HirDatabase, name: &Name) -> Option<StructField> {
db.struct_data(*self)
.variant_data
.fields()
.into_iter()
.flat_map(|it| it.iter())
.find(|(_id, data)| data.name == *name)
.map(|(id, _)| StructField { parent: (*self).into(), id })
}
pub fn generic_params(&self, db: &impl DefDatabase) -> Arc<GenericParams> {
db.generic_params((*self).into())
}
pub fn ty(&self, db: &impl HirDatabase) -> Ty {
db.type_for_def((*self).into(), Namespace::Types)
}
pub fn constructor_ty(&self, db: &impl HirDatabase) -> Ty {
db.type_for_def((*self).into(), Namespace::Values)
}
// FIXME move to a more general type
/// Builds a resolver for type references inside this struct.
pub fn resolver(&self, db: &impl HirDatabase) -> Resolver {
// take the outer scope...
let r = self.module(db).resolver(db);
// ...and add generic params, if present
let p = self.generic_params(db);
let r = if !p.params.is_empty() { r.push_generic_params_scope(p) } else { r };
r
}
}
impl Docs for Struct {
fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
docs_from_ast(&*self.source(db).1)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct Enum {
pub(crate) id: EnumId,
}
impl Enum {
pub fn source(&self, db: &impl DefDatabase) -> (HirFileId, TreeArc<ast::EnumDef>) {
self.id.source(db)
}
pub fn module(&self, db: &impl HirDatabase) -> Module {
self.id.module(db)
}
pub fn name(&self, db: &impl HirDatabase) -> Option<Name> {
db.enum_data(*self).name.clone()
}
pub fn variants(&self, db: &impl DefDatabase) -> Vec<EnumVariant> {
db.enum_data(*self)
.variants
.iter()
.map(|(id, _)| EnumVariant { parent: *self, id })
.collect()
}
pub fn variant(&self, db: &impl DefDatabase, name: &Name) -> Option<EnumVariant> {
db.enum_data(*self)
.variants
.iter()
.find(|(_id, data)| data.name.as_ref() == Some(name))
.map(|(id, _)| EnumVariant { parent: *self, id })
}
pub fn generic_params(&self, db: &impl DefDatabase) -> Arc<GenericParams> {
db.generic_params((*self).into())
}
pub fn ty(&self, db: &impl HirDatabase) -> Ty {
db.type_for_def((*self).into(), Namespace::Types)
}
// FIXME: move to a more general type
/// Builds a resolver for type references inside this struct.
pub fn resolver(&self, db: &impl HirDatabase) -> Resolver {
// take the outer scope...
let r = self.module(db).resolver(db);
// ...and add generic params, if present
let p = self.generic_params(db);
let r = if !p.params.is_empty() { r.push_generic_params_scope(p) } else { r };
r
}
}
impl Docs for Enum {
fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
docs_from_ast(&*self.source(db).1)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct EnumVariant {
pub(crate) parent: Enum,
pub(crate) id: EnumVariantId,
}
impl EnumVariant {
pub fn source(&self, db: &impl DefDatabase) -> (HirFileId, TreeArc<ast::EnumVariant>) {
self.source_impl(db)
}
pub fn module(&self, db: &impl HirDatabase) -> Module {
self.parent.module(db)
}
pub fn parent_enum(&self, _db: &impl DefDatabase) -> Enum {
self.parent
}
pub fn name(&self, db: &impl DefDatabase) -> Option<Name> {
db.enum_data(self.parent).variants[self.id].name.clone()
}
pub fn fields(&self, db: &impl HirDatabase) -> Vec<StructField> {
self.variant_data(db)
.fields()
.into_iter()
.flat_map(|it| it.iter())
.map(|(id, _)| StructField { parent: (*self).into(), id })
.collect()
}
pub fn field(&self, db: &impl HirDatabase, name: &Name) -> Option<StructField> {
self.variant_data(db)
.fields()
.into_iter()
.flat_map(|it| it.iter())
.find(|(_id, data)| data.name == *name)
.map(|(id, _)| StructField { parent: (*self).into(), id })
}
}
impl Docs for EnumVariant {
fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
docs_from_ast(&*self.source(db).1)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct Function {
pub(crate) id: FunctionId,
}
/// The declared signature of a function.
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct FnSignature {
pub(crate) name: Name,
pub(crate) params: Vec<TypeRef>,
pub(crate) ret_type: TypeRef,
/// True if the first param is `self`. This is relevant to decide whether this
/// can be called as a method.
pub(crate) has_self_param: bool,
}
impl FnSignature {
pub fn name(&self) -> &Name {
&self.name
}
pub fn params(&self) -> &[TypeRef] {
&self.params
}
pub fn ret_type(&self) -> &TypeRef {
&self.ret_type
}
/// True if the first arg is `self`. This is relevant to decide whether this
/// can be called as a method.
pub fn has_self_param(&self) -> bool {
self.has_self_param
}
}
impl Function {
pub fn source(&self, db: &impl DefDatabase) -> (HirFileId, TreeArc<ast::FnDef>) {
self.id.source(db)
}
pub fn module(&self, db: &impl DefDatabase) -> Module {
self.id.module(db)
}
pub fn name(&self, db: &impl HirDatabase) -> Name {
self.signature(db).name.clone()
}
pub fn body_source_map(&self, db: &impl HirDatabase) -> Arc<BodySourceMap> {
db.body_with_source_map(*self).1
}
pub fn body(&self, db: &impl HirDatabase) -> Arc<Body> {
db.body_hir(*self)
}
pub fn ty(&self, db: &impl HirDatabase) -> Ty {
db.type_for_def((*self).into(), Namespace::Values)
}
pub fn scopes(&self, db: &impl HirDatabase) -> ScopesWithSourceMap {
let scopes = db.expr_scopes(*self);
let source_map = db.body_with_source_map(*self).1;
ScopesWithSourceMap { scopes, source_map }
}
pub fn signature(&self, db: &impl HirDatabase) -> Arc<FnSignature> {
db.fn_signature(*self)
}
pub fn infer(&self, db: &impl HirDatabase) -> Arc<InferenceResult> {
db.infer(*self)
}
pub fn generic_params(&self, db: &impl DefDatabase) -> Arc<GenericParams> {
db.generic_params((*self).into())
}
/// The containing impl block, if this is a method.
pub fn impl_block(&self, db: &impl DefDatabase) -> Option<ImplBlock> {
let module_impls = db.impls_in_module(self.module(db));
ImplBlock::containing(module_impls, (*self).into())
}
// FIXME: move to a more general type for 'body-having' items
/// Builds a resolver for code inside this item.
pub fn resolver(&self, db: &impl HirDatabase) -> Resolver {
// take the outer scope...
let r = self
.impl_block(db)
.map(|ib| ib.resolver(db))
.unwrap_or_else(|| self.module(db).resolver(db));
// ...and add generic params, if present
let p = self.generic_params(db);
let r = if !p.params.is_empty() { r.push_generic_params_scope(p) } else { r };
r
}
}
impl Docs for Function {
fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
docs_from_ast(&*self.source(db).1)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct Const {
pub(crate) id: ConstId,
}
impl Const {
pub fn source(&self, db: &impl DefDatabase) -> (HirFileId, TreeArc<ast::ConstDef>) {
self.id.source(db)
}
pub fn module(&self, db: &impl DefDatabase) -> Module {
self.id.module(db)
}
pub fn signature(&self, db: &impl HirDatabase) -> Arc<ConstSignature> {
db.const_signature(*self)
}
/// The containing impl block, if this is a method.
pub fn impl_block(&self, db: &impl DefDatabase) -> Option<ImplBlock> {
let module_impls = db.impls_in_module(self.module(db));
ImplBlock::containing(module_impls, (*self).into())
}
// FIXME: move to a more general type for 'body-having' items
/// Builds a resolver for code inside this item.
pub fn resolver(&self, db: &impl HirDatabase) -> Resolver {
// take the outer scope...
let r = self
.impl_block(db)
.map(|ib| ib.resolver(db))
.unwrap_or_else(|| self.module(db).resolver(db));
r
}
}
impl Docs for Const {
fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
docs_from_ast(&*self.source(db).1)
}
}
/// The declared signature of a const.
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct ConstSignature {
pub(crate) name: Name,
pub(crate) type_ref: TypeRef,
}
impl ConstSignature {
pub fn name(&self) -> &Name {
&self.name
}
pub fn type_ref(&self) -> &TypeRef {
&self.type_ref
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct Static {
pub(crate) id: StaticId,
}
impl Static {
pub fn source(&self, db: &impl DefDatabase) -> (HirFileId, TreeArc<ast::StaticDef>) {
self.id.source(db)
}
pub fn module(&self, db: &impl DefDatabase) -> Module {
self.id.module(db)
}
pub fn signature(&self, db: &impl HirDatabase) -> Arc<ConstSignature> {
db.static_signature(*self)
}
/// Builds a resolver for code inside this item.
pub fn resolver(&self, db: &impl HirDatabase) -> Resolver {
// take the outer scope...
self.module(db).resolver(db)
}
}
impl Docs for Static {
fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
docs_from_ast(&*self.source(db).1)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct Trait {
pub(crate) id: TraitId,
}
impl Trait {
pub fn source(&self, db: &impl DefDatabase) -> (HirFileId, TreeArc<ast::TraitDef>) {
self.id.source(db)
}
pub fn module(&self, db: &impl DefDatabase) -> Module {
self.id.module(db)
}
pub fn generic_params(&self, db: &impl DefDatabase) -> Arc<GenericParams> {
db.generic_params((*self).into())
}
}
impl Docs for Trait {
fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
docs_from_ast(&*self.source(db).1)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct TypeAlias {
pub(crate) id: TypeId,
}
impl TypeAlias {
pub fn source(&self, db: &impl DefDatabase) -> (HirFileId, TreeArc<ast::TypeAliasDef>) {
self.id.source(db)
}
pub fn generic_params(&self, db: &impl DefDatabase) -> Arc<GenericParams> {
db.generic_params((*self).into())
}
pub fn module(&self, db: &impl DefDatabase) -> Module {
self.id.module(db)
}
/// The containing impl block, if this is a method.
pub fn impl_block(&self, db: &impl DefDatabase) -> Option<ImplBlock> {
let module_impls = db.impls_in_module(self.module(db));
ImplBlock::containing(module_impls, (*self).into())
}
pub fn type_ref(self, db: &impl DefDatabase) -> Arc<TypeRef> {
db.type_alias_ref(self)
}
/// Builds a resolver for the type references in this type alias.
pub fn resolver(&self, db: &impl HirDatabase) -> Resolver {
// take the outer scope...
let r = self
.impl_block(db)
.map(|ib| ib.resolver(db))
.unwrap_or_else(|| self.module(db).resolver(db));
// ...and add generic params, if present
let p = self.generic_params(db);
let r = if !p.params.is_empty() { r.push_generic_params_scope(p) } else { r };
r
}
}
impl Docs for TypeAlias {
fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
docs_from_ast(&*self.source(db).1)
}
}
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