//! Defines database & queries for name resolution. use std::sync::Arc; use base_db::{salsa, CrateId, SourceDatabase, Upcast}; use either::Either; use hir_expand::{db::AstDatabase, HirFileId}; use la_arena::ArenaMap; use syntax::{ast, AstPtr, SmolStr}; use crate::{ adt::{EnumData, StructData}, attr::{Attrs, AttrsWithOwner}, body::{scope::ExprScopes, Body, BodySourceMap}, data::{ ConstData, FunctionData, ImplData, Macro2Data, MacroRulesData, ProcMacroData, StaticData, TraitData, TypeAliasData, }, generics::GenericParams, import_map::ImportMap, intern::Interned, item_tree::{AttrOwner, ItemTree}, lang_item::{LangItemTarget, LangItems}, nameres::{diagnostics::DefDiagnostic, DefMap}, visibility::{self, Visibility}, AttrDefId, BlockId, BlockLoc, ConstId, ConstLoc, DefWithBodyId, EnumId, EnumLoc, ExternBlockId, ExternBlockLoc, FunctionId, FunctionLoc, GenericDefId, ImplId, ImplLoc, LocalEnumVariantId, LocalFieldId, Macro2Id, Macro2Loc, MacroRulesId, MacroRulesLoc, ProcMacroId, ProcMacroLoc, StaticId, StaticLoc, StructId, StructLoc, TraitId, TraitLoc, TypeAliasId, TypeAliasLoc, UnionId, UnionLoc, VariantId, }; #[salsa::query_group(InternDatabaseStorage)] pub trait InternDatabase: SourceDatabase { #[salsa::interned] fn intern_function(&self, loc: FunctionLoc) -> FunctionId; #[salsa::interned] fn intern_struct(&self, loc: StructLoc) -> StructId; #[salsa::interned] fn intern_union(&self, loc: UnionLoc) -> UnionId; #[salsa::interned] fn intern_enum(&self, loc: EnumLoc) -> EnumId; #[salsa::interned] fn intern_const(&self, loc: ConstLoc) -> ConstId; #[salsa::interned] fn intern_static(&self, loc: StaticLoc) -> StaticId; #[salsa::interned] fn intern_trait(&self, loc: TraitLoc) -> TraitId; #[salsa::interned] fn intern_type_alias(&self, loc: TypeAliasLoc) -> TypeAliasId; #[salsa::interned] fn intern_impl(&self, loc: ImplLoc) -> ImplId; #[salsa::interned] fn intern_extern_block(&self, loc: ExternBlockLoc) -> ExternBlockId; #[salsa::interned] fn intern_block(&self, loc: BlockLoc) -> BlockId; #[salsa::interned] fn intern_macro2(&self, loc: Macro2Loc) -> Macro2Id; #[salsa::interned] fn intern_proc_macro(&self, loc: ProcMacroLoc) -> ProcMacroId; #[salsa::interned] fn intern_macro_rules(&self, loc: MacroRulesLoc) -> MacroRulesId; } #[salsa::query_group(DefDatabaseStorage)] pub trait DefDatabase: InternDatabase + AstDatabase + Upcast { #[salsa::input] fn enable_proc_attr_macros(&self) -> bool; #[salsa::invoke(ItemTree::file_item_tree_query)] fn file_item_tree(&self, file_id: HirFileId) -> Arc; #[salsa::invoke(crate_def_map_wait)] #[salsa::transparent] fn crate_def_map(&self, krate: CrateId) -> Arc; #[salsa::invoke(DefMap::crate_def_map_query)] fn crate_def_map_query(&self, krate: CrateId) -> Arc; /// Computes the block-level `DefMap`, returning `None` when `block` doesn't contain any inner /// items directly. /// /// For example: /// /// ``` /// fn f() { // (0) /// { // (1) /// fn inner() {} /// } /// } /// ``` /// /// The `block_def_map` for block 0 would return `None`, while `block_def_map` of block 1 would /// return a `DefMap` containing `inner`. #[salsa::invoke(DefMap::block_def_map_query)] fn block_def_map(&self, block: BlockId) -> Option>; #[salsa::invoke(StructData::struct_data_query)] fn struct_data(&self, id: StructId) -> Arc; #[salsa::invoke(StructData::union_data_query)] fn union_data(&self, id: UnionId) -> Arc; #[salsa::invoke(EnumData::enum_data_query)] fn enum_data(&self, e: EnumId) -> Arc; #[salsa::invoke(ImplData::impl_data_query)] fn impl_data(&self, e: ImplId) -> Arc; #[salsa::invoke(ImplData::impl_data_with_diagnostics_query)] fn impl_data_with_diagnostics(&self, e: ImplId) -> (Arc, Arc>); #[salsa::invoke(TraitData::trait_data_query)] fn trait_data(&self, e: TraitId) -> Arc; #[salsa::invoke(TraitData::trait_data_with_diagnostics_query)] fn trait_data_with_diagnostics(&self, tr: TraitId) -> (Arc, Arc>); #[salsa::invoke(TypeAliasData::type_alias_data_query)] fn type_alias_data(&self, e: TypeAliasId) -> Arc; #[salsa::invoke(FunctionData::fn_data_query)] fn function_data(&self, func: FunctionId) -> Arc; #[salsa::invoke(ConstData::const_data_query)] fn const_data(&self, konst: ConstId) -> Arc; #[salsa::invoke(StaticData::static_data_query)] fn static_data(&self, konst: StaticId) -> Arc; #[salsa::invoke(Macro2Data::macro2_data_query)] fn macro2_data(&self, makro: Macro2Id) -> Arc; #[salsa::invoke(MacroRulesData::macro_rules_data_query)] fn macro_rules_data(&self, makro: MacroRulesId) -> Arc; #[salsa::invoke(ProcMacroData::proc_macro_data_query)] fn proc_macro_data(&self, makro: ProcMacroId) -> Arc; #[salsa::invoke(Body::body_with_source_map_query)] fn body_with_source_map(&self, def: DefWithBodyId) -> (Arc, Arc); #[salsa::invoke(Body::body_query)] fn body(&self, def: DefWithBodyId) -> Arc; #[salsa::invoke(ExprScopes::expr_scopes_query)] fn expr_scopes(&self, def: DefWithBodyId) -> Arc; #[salsa::invoke(GenericParams::generic_params_query)] fn generic_params(&self, def: GenericDefId) -> Interned; #[salsa::invoke(Attrs::variants_attrs_query)] fn variants_attrs(&self, def: EnumId) -> Arc>; #[salsa::invoke(Attrs::fields_attrs_query)] fn fields_attrs(&self, def: VariantId) -> Arc>; #[salsa::invoke(crate::attr::variants_attrs_source_map)] fn variants_attrs_source_map( &self, def: EnumId, ) -> Arc>>; #[salsa::invoke(crate::attr::fields_attrs_source_map)] fn fields_attrs_source_map( &self, def: VariantId, ) -> Arc, AstPtr>>>; #[salsa::invoke(AttrsWithOwner::attrs_query)] fn attrs(&self, def: AttrDefId) -> AttrsWithOwner; #[salsa::invoke(LangItems::crate_lang_items_query)] fn crate_lang_items(&self, krate: CrateId) -> Arc; #[salsa::invoke(LangItems::lang_item_query)] fn lang_item(&self, start_crate: CrateId, item: SmolStr) -> Option; #[salsa::invoke(ImportMap::import_map_query)] fn import_map(&self, krate: CrateId) -> Arc; #[salsa::invoke(visibility::field_visibilities_query)] fn field_visibilities(&self, var: VariantId) -> Arc>; // FIXME: unify function_visibility and const_visibility? #[salsa::invoke(visibility::function_visibility_query)] fn function_visibility(&self, def: FunctionId) -> Visibility; #[salsa::invoke(visibility::const_visibility_query)] fn const_visibility(&self, def: ConstId) -> Visibility; #[salsa::transparent] fn crate_limits(&self, crate_id: CrateId) -> CrateLimits; fn crate_supports_no_std(&self, crate_id: CrateId) -> bool; } fn crate_def_map_wait(db: &dyn DefDatabase, krate: CrateId) -> Arc { let _p = profile::span("crate_def_map:wait"); db.crate_def_map_query(krate) } pub struct CrateLimits { /// The maximum depth for potentially infinitely-recursive compile-time operations like macro expansion or auto-dereference. pub recursion_limit: u32, } fn crate_limits(db: &dyn DefDatabase, crate_id: CrateId) -> CrateLimits { let def_map = db.crate_def_map(crate_id); CrateLimits { // 128 is the default in rustc. recursion_limit: def_map.recursion_limit().unwrap_or(128), } } fn crate_supports_no_std(db: &dyn DefDatabase, crate_id: CrateId) -> bool { let file = db.crate_graph()[crate_id].root_file_id; let item_tree = db.file_item_tree(file.into()); let attrs = item_tree.raw_attrs(AttrOwner::TopLevel); for attr in &**attrs { match attr.path().as_ident().and_then(|id| id.as_text()) { Some(ident) if ident == "no_std" => return true, Some(ident) if ident == "cfg_attr" => {} _ => continue, } // This is a `cfg_attr`; check if it could possibly expand to `no_std`. // Syntax is: `#[cfg_attr(condition(cfg, style), attr0, attr1, <...>)]` let tt = match attr.token_tree_value() { Some(tt) => &tt.token_trees, None => continue, }; let segments = tt.split(|tt| match tt { tt::TokenTree::Leaf(tt::Leaf::Punct(p)) if p.char == ',' => true, _ => false, }); for output in segments.skip(1) { match output { [tt::TokenTree::Leaf(tt::Leaf::Ident(ident))] if ident.text == "no_std" => { return true } _ => {} } } } false }