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|
use std::sync::Arc;
use hir::{
self, Problem, source_binder
};
use ra_db::{
FilesDatabase, SourceRoot, SourceRootId, SyntaxDatabase,
salsa::{self, Database},
};
use ra_ide_api_light::{self, assists, LocalEdit, Severity};
use ra_syntax::{
algo::find_node_at_offset, ast::{self, NameOwner}, AstNode,
SourceFile,
TextRange,
};
use crate::{
AnalysisChange,
CrateId, db, Diagnostic, FileId, FilePosition, FileRange, FileSystemEdit,
Query, RootChange, SourceChange, SourceFileEdit,
symbol_index::{FileSymbol, LibrarySymbolsQuery},
};
impl db::RootDatabase {
pub(crate) fn apply_change(&mut self, change: AnalysisChange) {
log::info!("apply_change {:?}", change);
// self.gc_syntax_trees();
if !change.new_roots.is_empty() {
let mut local_roots = Vec::clone(&self.local_roots());
for (root_id, is_local) in change.new_roots {
self.query_mut(ra_db::SourceRootQuery)
.set(root_id, Default::default());
if is_local {
local_roots.push(root_id);
}
}
self.query_mut(ra_db::LocalRootsQuery)
.set((), Arc::new(local_roots));
}
for (root_id, root_change) in change.roots_changed {
self.apply_root_change(root_id, root_change);
}
for (file_id, text) in change.files_changed {
self.query_mut(ra_db::FileTextQuery).set(file_id, text)
}
if !change.libraries_added.is_empty() {
let mut libraries = Vec::clone(&self.library_roots());
for library in change.libraries_added {
libraries.push(library.root_id);
self.query_mut(ra_db::SourceRootQuery)
.set(library.root_id, Default::default());
self.query_mut(LibrarySymbolsQuery)
.set_constant(library.root_id, Arc::new(library.symbol_index));
self.apply_root_change(library.root_id, library.root_change);
}
self.query_mut(ra_db::LibraryRootsQuery)
.set((), Arc::new(libraries));
}
if let Some(crate_graph) = change.crate_graph {
self.query_mut(ra_db::CrateGraphQuery)
.set((), Arc::new(crate_graph))
}
}
fn apply_root_change(&mut self, root_id: SourceRootId, root_change: RootChange) {
let mut source_root = SourceRoot::clone(&self.source_root(root_id));
for add_file in root_change.added {
self.query_mut(ra_db::FileTextQuery)
.set(add_file.file_id, add_file.text);
self.query_mut(ra_db::FileRelativePathQuery)
.set(add_file.file_id, add_file.path.clone());
self.query_mut(ra_db::FileSourceRootQuery)
.set(add_file.file_id, root_id);
source_root.files.insert(add_file.path, add_file.file_id);
}
for remove_file in root_change.removed {
self.query_mut(ra_db::FileTextQuery)
.set(remove_file.file_id, Default::default());
source_root.files.remove(&remove_file.path);
}
self.query_mut(ra_db::SourceRootQuery)
.set(root_id, Arc::new(source_root));
}
#[allow(unused)]
/// Ideally, we should call this function from time to time to collect heavy
/// syntax trees. However, if we actually do that, everything is recomputed
/// for some reason. Needs investigation.
fn gc_syntax_trees(&mut self) {
self.query(ra_db::SourceFileQuery)
.sweep(salsa::SweepStrategy::default().discard_values());
self.query(hir::db::FileItemsQuery)
.sweep(salsa::SweepStrategy::default().discard_values());
self.query(hir::db::FileItemQuery)
.sweep(salsa::SweepStrategy::default().discard_values());
}
}
impl db::RootDatabase {
/// Returns `Vec` for the same reason as `parent_module`
pub(crate) fn crate_for(&self, file_id: FileId) -> Vec<CrateId> {
let module = match source_binder::module_from_file_id(self, file_id) {
Some(it) => it,
None => return Vec::new(),
};
let krate = match module.krate(self) {
Some(it) => it,
None => return Vec::new(),
};
vec![krate.crate_id()]
}
pub(crate) fn find_all_refs(&self, position: FilePosition) -> Vec<(FileId, TextRange)> {
let file = self.source_file(position.file_id);
// Find the binding associated with the offset
let (binding, descr) = match find_binding(self, &file, position) {
None => return Vec::new(),
Some(it) => it,
};
let mut ret = binding
.name()
.into_iter()
.map(|name| (position.file_id, name.syntax().range()))
.collect::<Vec<_>>();
ret.extend(
descr
.scopes(self)
.find_all_refs(binding)
.into_iter()
.map(|ref_desc| (position.file_id, ref_desc.range)),
);
return ret;
fn find_binding<'a>(
db: &db::RootDatabase,
source_file: &'a SourceFile,
position: FilePosition,
) -> Option<(&'a ast::BindPat, hir::Function)> {
let syntax = source_file.syntax();
if let Some(binding) = find_node_at_offset::<ast::BindPat>(syntax, position.offset) {
let descr = source_binder::function_from_child_node(
db,
position.file_id,
binding.syntax(),
)?;
return Some((binding, descr));
};
let name_ref = find_node_at_offset::<ast::NameRef>(syntax, position.offset)?;
let descr =
source_binder::function_from_child_node(db, position.file_id, name_ref.syntax())?;
let scope = descr.scopes(db);
let resolved = scope.resolve_local_name(name_ref)?;
let resolved = resolved.ptr().to_node(source_file);
let binding = find_node_at_offset::<ast::BindPat>(syntax, resolved.range().end())?;
Some((binding, descr))
}
}
pub(crate) fn diagnostics(&self, file_id: FileId) -> Vec<Diagnostic> {
let syntax = self.source_file(file_id);
let mut res = ra_ide_api_light::diagnostics(&syntax)
.into_iter()
.map(|d| Diagnostic {
range: d.range,
message: d.msg,
severity: d.severity,
fix: d.fix.map(|fix| SourceChange::from_local_edit(file_id, fix)),
})
.collect::<Vec<_>>();
if let Some(m) = source_binder::module_from_file_id(self, file_id) {
for (name_node, problem) in m.problems(self) {
let source_root = self.file_source_root(file_id);
let diag = match problem {
Problem::UnresolvedModule { candidate } => {
let create_file = FileSystemEdit::CreateFile {
source_root,
path: candidate.clone(),
};
let fix = SourceChange {
label: "create module".to_string(),
source_file_edits: Vec::new(),
file_system_edits: vec![create_file],
cursor_position: None,
};
Diagnostic {
range: name_node.range(),
message: "unresolved module".to_string(),
severity: Severity::Error,
fix: Some(fix),
}
}
Problem::NotDirOwner { move_to, candidate } => {
let move_file = FileSystemEdit::MoveFile {
src: file_id,
dst_source_root: source_root,
dst_path: move_to.clone(),
};
let create_file = FileSystemEdit::CreateFile {
source_root,
path: move_to.join(candidate),
};
let fix = SourceChange {
label: "move file and create module".to_string(),
source_file_edits: Vec::new(),
file_system_edits: vec![move_file, create_file],
cursor_position: None,
};
Diagnostic {
range: name_node.range(),
message: "can't declare module at this location".to_string(),
severity: Severity::Error,
fix: Some(fix),
}
}
};
res.push(diag)
}
};
res
}
pub(crate) fn assists(&self, frange: FileRange) -> Vec<SourceChange> {
let file = self.source_file(frange.file_id);
assists::assists(&file, frange.range)
.into_iter()
.map(|local_edit| SourceChange::from_local_edit(frange.file_id, local_edit))
.collect()
}
pub(crate) fn index_resolve(&self, name_ref: &ast::NameRef) -> Vec<FileSymbol> {
let name = name_ref.text();
let mut query = Query::new(name.to_string());
query.exact();
query.limit(4);
crate::symbol_index::world_symbols(self, query)
}
}
impl SourceChange {
pub(crate) fn from_local_edit(file_id: FileId, edit: LocalEdit) -> SourceChange {
let file_edit = SourceFileEdit {
file_id,
edit: edit.edit,
};
SourceChange {
label: edit.label,
source_file_edits: vec![file_edit],
file_system_edits: vec![],
cursor_position: edit
.cursor_position
.map(|offset| FilePosition { offset, file_id }),
}
}
}
|
