use ra_db::{Cancelable, 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, 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) -> Cancelable> { let loc = self.def_id.loc(db); let module_tree = db.module_tree(loc.source_root_id); let link = ctry!(loc.module_id.parent_link(&module_tree)); Ok(Some(link.name(&module_tree).clone())) } pub fn definition_source_impl( &self, db: &impl HirDatabase, ) -> Cancelable<(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()) }; Ok((file_id, module_source)) } pub fn declaration_source_impl( &self, db: &impl HirDatabase, ) -> Cancelable)>> { let loc = self.def_id.loc(db); let module_tree = db.module_tree(loc.source_root_id); let link = ctry!(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); Ok(Some((file_id, src))) } pub(crate) fn krate_impl(&self, db: &impl HirDatabase) -> Cancelable> { 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 = ctry!(crate_graph.crate_id_for_crate_root(file_id)); Ok(Some(Crate::new(crate_id))) } pub(crate) fn crate_root_impl(&self, db: &impl HirDatabase) -> Cancelable { 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); Ok(Module::from_module_id(db, loc.source_root_id, module_id)) } /// Finds a child module with the specified name. pub 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 fn children_impl(&self, db: &impl HirDatabase) -> Cancelable> { // 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::>(); Ok(children.into_iter()) } pub fn parent_impl(&self, db: &impl HirDatabase) -> Cancelable> { let loc = self.def_id.loc(db); let module_tree = db.module_tree(loc.source_root_id); let parent_id = ctry!(loc.module_id.parent(&module_tree)); Ok(Some(Module::from_module_id( db, loc.source_root_id, parent_id, ))) } /// Returns a `ModuleScope`: a set of items, visible in this module. pub fn scope_impl(&self, db: &impl HirDatabase) -> Cancelable { let loc = self.def_id.loc(db); let item_map = db.item_map(loc.source_root_id)?; let res = item_map.per_module[&loc.module_id].clone(); Ok(res) } pub fn resolve_path_impl( &self, db: &impl HirDatabase, path: &Path, ) -> Cancelable> { 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 Ok(PerNs::none()); } } } .def_id, ); let segments = &path.segments; for (idx, name) in segments.iter().enumerate() { let curr = if let Some(r) = curr_per_ns.as_ref().take_types() { r } else { return Ok(PerNs::none()); }; let module = match curr.resolve(db)? { Def::Module(it) => it, Def::Enum(e) => { if segments.len() == idx + 1 { // enum variant let matching_variant = e.variants(db)?.into_iter().find(|(n, _variant)| n == name); if let Some((_n, variant)) = matching_variant { return Ok(PerNs::both(variant.def_id(), e.def_id())); } else { return Ok(PerNs::none()); } } else if segments.len() == idx { // enum return Ok(PerNs::types(e.def_id())); } else { // malformed enum? return Ok(PerNs::none()); } } _ => return Ok(PerNs::none()), }; let scope = module.scope(db)?; curr_per_ns = if let Some(r) = scope.get(&name) { r.def_id } else { return Ok(PerNs::none()); }; } Ok(curr_per_ns) } pub fn problems_impl( &self, db: &impl HirDatabase, ) -> Cancelable, Problem)>> { let loc = self.def_id.loc(db); let module_tree = db.module_tree(loc.source_root_id); Ok(loc.module_id.problems(&module_tree, db)) } }