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use ra_db::{CrateId, Cancelable, FileId};
use ra_syntax::{AstNode, ast};
use crate::{HirFileId, db::HirDatabase, Crate, CrateDependency, AsName, DefId, DefLoc, DefKind, Name, Path, PathKind, PerNs, Def};
use crate::code_model_api::Module;
impl Crate {
pub(crate) fn new(crate_id: CrateId) -> Crate {
Crate { crate_id }
}
pub(crate) fn dependencies_impl(&self, db: &impl HirDatabase) -> Vec<CrateDependency> {
let crate_graph = db.crate_graph();
crate_graph
.dependencies(self.crate_id)
.map(|dep| {
let krate = Crate::new(dep.crate_id());
let name = dep.as_name();
CrateDependency { krate, name }
})
.collect()
}
pub(crate) fn root_module_impl(&self, db: &impl HirDatabase) -> Cancelable<Option<Module>> {
let crate_graph = db.crate_graph();
let file_id = crate_graph.crate_root(self.crate_id);
let source_root_id = db.file_source_root(file_id);
let file_id = HirFileId::from(file_id);
let module_tree = db.module_tree(source_root_id)?;
// FIXME: teach module tree about crate roots instead of guessing
let (module_id, _) = ctry!(module_tree
.modules_with_sources()
.find(|(_, src)| src.file_id() == file_id));
let def_loc = DefLoc {
kind: DefKind::Module,
source_root_id,
module_id,
source_item_id: module_id.source(&module_tree).0,
};
let def_id = def_loc.id(db);
let module = Module::new(def_id);
Ok(Some(module))
}
}
impl Module {
pub(crate) fn new(def_id: DefId) -> Self {
crate::code_model_api::Module { def_id }
}
pub(crate) fn source_impl(&self, db: &impl HirDatabase) -> (FileId, Option<ast::ModuleNode>) {
let loc = self.def_id.loc(db);
let source_item_id = loc.source_item_id;
let module = match source_item_id.item_id {
None => None,
Some(_) => {
let syntax_node = db.file_item(source_item_id);
let module = ast::Module::cast(syntax_node.borrowed()).unwrap().owned();
Some(module)
}
};
// FIXME: remove `as_original_file` here
let file_id = source_item_id.file_id.as_original_file();
(file_id, module)
}
pub(crate) fn krate_impl(&self, db: &impl HirDatabase) -> Cancelable<Option<Crate>> {
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<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);
let def_loc = DefLoc {
module_id,
source_item_id: module_id.source(&module_tree).0,
..loc
};
let def_id = def_loc.id(db);
let module = Module::new(def_id);
Ok(module)
}
/// Finds a child module with the specified name.
pub fn child_impl(&self, db: &impl HirDatabase, name: &Name) -> Cancelable<Option<Module>> {
let loc = self.def_id.loc(db);
let module_tree = db.module_tree(loc.source_root_id)?;
let child_id = ctry!(loc.module_id.child(&module_tree, name));
let def_loc = DefLoc {
module_id: child_id,
source_item_id: child_id.source(&module_tree).0,
..loc
};
let def_id = def_loc.id(db);
let module = Module::new(def_id);
Ok(Some(module))
}
pub fn parent_impl(&self, db: &impl HirDatabase) -> Cancelable<Option<Module>> {
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));
let def_loc = DefLoc {
module_id: parent_id,
source_item_id: parent_id.source(&module_tree).0,
..loc
};
let def_id = def_loc.id(db);
let module = Module::new(def_id);
Ok(Some(module))
}
pub fn resolve_path_impl(
&self,
db: &impl HirDatabase,
path: &Path,
) -> Cancelable<PerNs<DefId>> {
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 name in segments.iter() {
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,
// TODO here would be the place to handle enum variants...
_ => 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)
}
}
|
