use ra_db::{SourceRootId, FileId}; use ra_syntax::{ast, SyntaxNode, AstNode, TreeArc}; use crate::{ Module, ModuleSource, Problem, Crate, DefId, DefLoc, DefKind, Name, Path, PathKind, PerNs, Def, module_tree::ModuleId, nameres::{ModuleScope, lower::ImportId}, db::HirDatabase, }; impl Module { pub(crate) fn new(def_id: DefId) -> Self { crate::code_model_api::Module { def_id } } pub(crate) fn from_module_id( db: &impl HirDatabase, source_root_id: SourceRootId, module_id: ModuleId, ) -> Self { let module_tree = db.module_tree(source_root_id); let def_loc = DefLoc { kind: DefKind::Module, source_root_id, module_id, source_item_id: module_id.source(&module_tree), }; let def_id = def_loc.id(db); Module::new(def_id) } pub(crate) fn name_impl(&self, db: &impl HirDatabase) -> Option { let loc = self.def_id.loc(db); let module_tree = db.module_tree(loc.source_root_id); let link = loc.module_id.parent_link(&module_tree)?; Some(link.name(&module_tree).clone()) } pub(crate) fn definition_source_impl(&self, db: &impl HirDatabase) -> (FileId, ModuleSource) { let loc = self.def_id.loc(db); let file_id = loc.source_item_id.file_id.as_original_file(); let syntax_node = db.file_item(loc.source_item_id); let module_source = if let Some(source_file) = ast::SourceFile::cast(&syntax_node) { ModuleSource::SourceFile(source_file.to_owned()) } else { let module = ast::Module::cast(&syntax_node).unwrap(); ModuleSource::Module(module.to_owned()) }; (file_id, module_source) } pub(crate) fn declaration_source_impl( &self, db: &impl HirDatabase, ) -> Option<(FileId, TreeArc)> { let loc = self.def_id.loc(db); let module_tree = db.module_tree(loc.source_root_id); let link = loc.module_id.parent_link(&module_tree)?; let file_id = link .owner(&module_tree) .source(&module_tree) .file_id .as_original_file(); let src = link.source(&module_tree, db); Some((file_id, src)) } pub(crate) fn import_source_impl( &self, db: &impl HirDatabase, import: ImportId, ) -> TreeArc { let loc = self.def_id.loc(db); let source_map = db.lower_module_source_map(loc.source_root_id, loc.module_id); let (_, source) = self.definition_source(db); source_map.get(&source, import) } pub(crate) fn krate_impl(&self, db: &impl HirDatabase) -> Option { let root = self.crate_root(db); let loc = root.def_id.loc(db); let file_id = loc.source_item_id.file_id.as_original_file(); let crate_graph = db.crate_graph(); let crate_id = crate_graph.crate_id_for_crate_root(file_id)?; Some(Crate::new(crate_id)) } pub(crate) fn crate_root_impl(&self, db: &impl HirDatabase) -> Module { let loc = self.def_id.loc(db); let module_tree = db.module_tree(loc.source_root_id); let module_id = loc.module_id.crate_root(&module_tree); Module::from_module_id(db, loc.source_root_id, module_id) } /// Finds a child module with the specified name. pub(crate) fn child_impl(&self, db: &impl HirDatabase, name: &Name) -> Option { let loc = self.def_id.loc(db); let module_tree = db.module_tree(loc.source_root_id); let child_id = loc.module_id.child(&module_tree, name)?; Some(Module::from_module_id(db, loc.source_root_id, child_id)) } /// Iterates over all child modules. pub(crate) fn children_impl(&self, db: &impl HirDatabase) -> impl Iterator { // FIXME this should be implementable without collecting into a vec, but // it's kind of hard since the iterator needs to keep a reference to the // module tree. let loc = self.def_id.loc(db); let module_tree = db.module_tree(loc.source_root_id); let children = loc .module_id .children(&module_tree) .map(|(_, module_id)| Module::from_module_id(db, loc.source_root_id, module_id)) .collect::>(); children.into_iter() } pub(crate) fn parent_impl(&self, db: &impl HirDatabase) -> Option { let loc = self.def_id.loc(db); let module_tree = db.module_tree(loc.source_root_id); let parent_id = loc.module_id.parent(&module_tree)?; Some(Module::from_module_id(db, loc.source_root_id, parent_id)) } /// Returns a `ModuleScope`: a set of items, visible in this module. pub(crate) fn scope_impl(&self, db: &impl HirDatabase) -> ModuleScope { let loc = self.def_id.loc(db); let item_map = db.item_map(loc.source_root_id); item_map.per_module[&loc.module_id].clone() } pub(crate) fn resolve_path_impl(&self, db: &impl HirDatabase, path: &Path) -> PerNs { let mut curr_per_ns = PerNs::types( match path.kind { PathKind::Crate => self.crate_root(db), PathKind::Self_ | PathKind::Plain => self.clone(), PathKind::Super => { if let Some(p) = self.parent(db) { p } else { return PerNs::none(); } } PathKind::Abs => { // TODO: absolute use is not supported return PerNs::none(); } } .def_id, ); for segment in path.segments.iter() { let curr = match curr_per_ns.as_ref().take_types() { Some(r) => r, None => { // we still have path segments left, but the path so far // didn't resolve in the types namespace => no resolution // (don't break here because curr_per_ns might contain // something in the value namespace, and it would be wrong // to return that) return PerNs::none(); } }; // resolve segment in curr curr_per_ns = match curr.resolve(db) { Def::Module(m) => { let scope = m.scope(db); match scope.get(&segment.name) { Some(r) => r.def_id, None => PerNs::none(), } } Def::Enum(e) => { // enum variant let matching_variant = e .variants(db) .into_iter() .find(|(n, _variant)| n == &segment.name); match matching_variant { Some((_n, variant)) => PerNs::both(variant.def_id(), e.def_id()), None => PerNs::none(), } } _ => { // could be an inherent method call in UFCS form // (`Struct::method`), or some other kind of associated // item... Which we currently don't handle (TODO) PerNs::none() } }; } curr_per_ns } pub(crate) fn problems_impl( &self, db: &impl HirDatabase, ) -> Vec<(TreeArc, Problem)> { let loc = self.def_id.loc(db); let module_tree = db.module_tree(loc.source_root_id); loc.module_id.problems(&module_tree, db) } }