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|
use std::{
fmt,
hash::{Hash, Hasher},
sync::Arc,
};
use ra_editor::LineIndex;
use ra_syntax::File;
use rustc_hash::FxHashSet;
use salsa;
use crate::{
db,
Cancelable, Canceled,
module_map::{ModuleDescriptorQuery, ModuleTreeQuery, ModulesDatabase},
symbol_index::SymbolIndex,
FileId, FileResolverImp,
};
#[derive(Default)]
pub(crate) struct RootDatabase {
runtime: salsa::Runtime<RootDatabase>,
}
impl fmt::Debug for RootDatabase {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
fmt.write_str("RootDatabase { ... }")
}
}
impl salsa::Database for RootDatabase {
fn salsa_runtime(&self) -> &salsa::Runtime<RootDatabase> {
&self.runtime
}
}
pub(crate) fn check_canceled(db: &impl salsa::Database) -> Cancelable<()> {
if db.salsa_runtime().is_current_revision_canceled() {
Err(Canceled)
} else {
Ok(())
}
}
impl salsa::ParallelDatabase for RootDatabase {
fn fork(&self) -> Self {
RootDatabase {
runtime: self.runtime.fork(),
}
}
}
impl Clone for RootDatabase {
fn clone(&self) -> RootDatabase {
salsa::ParallelDatabase::fork(self)
}
}
salsa::database_storage! {
pub(crate) struct RootDatabaseStorage for RootDatabase {
impl FilesDatabase {
fn file_text() for FileTextQuery;
fn file_set() for FileSetQuery;
}
impl SyntaxDatabase {
fn file_syntax() for FileSyntaxQuery;
fn file_lines() for FileLinesQuery;
fn file_symbols() for FileSymbolsQuery;
}
impl ModulesDatabase {
fn module_tree() for ModuleTreeQuery;
fn module_descriptor() for ModuleDescriptorQuery;
}
}
}
salsa::query_group! {
pub(crate) trait FilesDatabase: salsa::Database {
fn file_text(file_id: FileId) -> Arc<String> {
type FileTextQuery;
storage input;
}
fn file_set() -> Arc<FileSet> {
type FileSetQuery;
storage input;
}
}
}
#[derive(Default, Debug, PartialEq, Eq)]
pub(crate) struct FileSet {
pub(crate) files: FxHashSet<FileId>,
pub(crate) resolver: FileResolverImp,
}
impl Hash for FileSet {
fn hash<H: Hasher>(&self, hasher: &mut H) {
let mut files = self.files.iter().cloned().collect::<Vec<_>>();
files.sort();
files.hash(hasher);
}
}
salsa::query_group! {
pub(crate) trait SyntaxDatabase: FilesDatabase {
fn file_syntax(file_id: FileId) -> File {
type FileSyntaxQuery;
}
fn file_lines(file_id: FileId) -> Arc<LineIndex> {
type FileLinesQuery;
}
fn file_symbols(file_id: FileId) -> Cancelable<Arc<SymbolIndex>> {
type FileSymbolsQuery;
}
}
}
fn file_syntax(db: &impl SyntaxDatabase, file_id: FileId) -> File {
let text = db.file_text(file_id);
File::parse(&*text)
}
fn file_lines(db: &impl SyntaxDatabase, file_id: FileId) -> Arc<LineIndex> {
let text = db.file_text(file_id);
Arc::new(LineIndex::new(&*text))
}
fn file_symbols(db: &impl SyntaxDatabase, file_id: FileId) -> Cancelable<Arc<SymbolIndex>> {
db::check_canceled(db)?;
let syntax = db.file_syntax(file_id);
Ok(Arc::new(SymbolIndex::for_file(file_id, syntax)))
}
|
