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|
use std::{
sync::Arc,
time::Instant,
};
use rustc_hash::FxHashMap;
use ra_syntax::{
AstNode, SyntaxNode, SmolStr,
ast::{self, FnDef, FnDefNode, NameOwner, ModuleItemOwner}
};
use ra_db::{SourceRootId, FileId, Cancelable,};
use crate::{
SourceFileItems, SourceItemId, DefKind, Function, DefId,
db::HirDatabase,
function::{FnScopes, FnId},
module::{
ModuleSource, ModuleSourceNode, ModuleId,
imp::Submodule,
nameres::{InputModuleItems, ItemMap, Resolver},
},
ty::{self, InferenceResult, Ty},
adt::{StructData, EnumData},
};
/// Resolve `FnId` to the corresponding `SyntaxNode`
pub(super) fn fn_syntax(db: &impl HirDatabase, fn_id: FnId) -> FnDefNode {
let def_loc = fn_id.0.loc(db);
assert!(def_loc.kind == DefKind::Function);
let syntax = db.file_item(def_loc.source_item_id);
FnDef::cast(syntax.borrowed()).unwrap().owned()
}
pub(super) fn fn_scopes(db: &impl HirDatabase, fn_id: FnId) -> Arc<FnScopes> {
let syntax = db.fn_syntax(fn_id);
let res = FnScopes::new(syntax.borrowed());
Arc::new(res)
}
pub(super) fn infer(db: &impl HirDatabase, fn_id: FnId) -> Cancelable<Arc<InferenceResult>> {
let function = Function { fn_id };
ty::infer(db, function).map(Arc::new)
}
pub(super) fn type_for_def(db: &impl HirDatabase, def_id: DefId) -> Cancelable<Ty> {
ty::type_for_def(db, def_id)
}
pub(super) fn struct_data(db: &impl HirDatabase, def_id: DefId) -> Cancelable<Arc<StructData>> {
let def_loc = def_id.loc(db);
assert!(def_loc.kind == DefKind::Struct);
let syntax = db.file_item(def_loc.source_item_id);
let struct_def =
ast::StructDef::cast(syntax.borrowed()).expect("struct def should point to StructDef node");
let module = def_id.module(db)?;
Ok(Arc::new(StructData::new(
db,
&module,
struct_def.borrowed(),
)?))
}
pub(super) fn enum_data(db: &impl HirDatabase, def_id: DefId) -> Cancelable<Arc<EnumData>> {
let def_loc = def_id.loc(db);
assert!(def_loc.kind == DefKind::Enum);
let syntax = db.file_item(def_loc.source_item_id);
let enum_def =
ast::EnumDef::cast(syntax.borrowed()).expect("enum def should point to EnumDef node");
let module = def_id.module(db)?;
Ok(Arc::new(EnumData::new(db, &module, enum_def.borrowed())?))
}
pub(super) fn file_items(db: &impl HirDatabase, file_id: FileId) -> Arc<SourceFileItems> {
let mut res = SourceFileItems::new(file_id);
let source_file = db.source_file(file_id);
let source_file = source_file.borrowed();
source_file
.syntax()
.descendants()
.filter_map(ast::ModuleItem::cast)
.map(|it| it.syntax().owned())
.for_each(|it| {
res.alloc(it);
});
Arc::new(res)
}
pub(super) fn file_item(db: &impl HirDatabase, source_item_id: SourceItemId) -> SyntaxNode {
match source_item_id.item_id {
Some(id) => db.file_items(source_item_id.file_id)[id].clone(),
None => db.source_file(source_item_id.file_id).syntax().owned(),
}
}
pub(crate) fn submodules(
db: &impl HirDatabase,
source: ModuleSource,
) -> Cancelable<Arc<Vec<Submodule>>> {
db.check_canceled()?;
let file_id = source.file_id();
let submodules = match source.resolve(db) {
ModuleSourceNode::SourceFile(it) => collect_submodules(db, file_id, it.borrowed()),
ModuleSourceNode::Module(it) => it
.borrowed()
.item_list()
.map(|it| collect_submodules(db, file_id, it))
.unwrap_or_else(Vec::new),
};
return Ok(Arc::new(submodules));
fn collect_submodules<'a>(
db: &impl HirDatabase,
file_id: FileId,
root: impl ast::ModuleItemOwner<'a>,
) -> Vec<Submodule> {
modules(root)
.map(|(name, m)| {
if m.has_semi() {
Submodule::Declaration(name)
} else {
let src = ModuleSource::new_inline(db, file_id, m);
Submodule::Definition(name, src)
}
})
.collect()
}
}
pub(crate) fn modules<'a>(
root: impl ast::ModuleItemOwner<'a>,
) -> impl Iterator<Item = (SmolStr, ast::Module<'a>)> {
root.items()
.filter_map(|item| match item {
ast::ModuleItem::Module(m) => Some(m),
_ => None,
})
.filter_map(|module| {
let name = module.name()?.text();
Some((name, module))
})
}
pub(super) fn input_module_items(
db: &impl HirDatabase,
source_root: SourceRootId,
module_id: ModuleId,
) -> Cancelable<Arc<InputModuleItems>> {
let module_tree = db.module_tree(source_root)?;
let source = module_id.source(&module_tree);
let file_items = db.file_items(source.file_id());
let res = match source.resolve(db) {
ModuleSourceNode::SourceFile(it) => {
let items = it.borrowed().items();
InputModuleItems::new(&file_items, items)
}
ModuleSourceNode::Module(it) => {
let items = it
.borrowed()
.item_list()
.into_iter()
.flat_map(|it| it.items());
InputModuleItems::new(&file_items, items)
}
};
Ok(Arc::new(res))
}
pub(super) fn item_map(
db: &impl HirDatabase,
source_root: SourceRootId,
) -> Cancelable<Arc<ItemMap>> {
let start = Instant::now();
let module_tree = db.module_tree(source_root)?;
let input = module_tree
.modules()
.map(|id| {
let items = db.input_module_items(source_root, id)?;
Ok((id, items))
})
.collect::<Cancelable<FxHashMap<_, _>>>()?;
let resolver = Resolver::new(db, &input, source_root, module_tree);
let res = resolver.resolve()?;
let elapsed = start.elapsed();
log::info!("item_map: {:?}", elapsed);
Ok(Arc::new(res))
}
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