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pub(crate) mod function;
pub(crate) mod module;
use std::sync::Arc;
use ra_syntax::{
ast::{self, AstNode, FnDefNode},
TextRange,
};
use crate::{
db::SyntaxDatabase,
descriptors::function::{resolve_local_name, FnId, FnScopes},
descriptors::module::{ModuleId, ModuleTree, ModuleSource, nameres::{ItemMap, InputModuleItems}},
input::SourceRootId,
loc2id::IdDatabase,
syntax_ptr::LocalSyntaxPtr,
Cancelable,
};
salsa::query_group! {
pub(crate) trait DescriptorDatabase: SyntaxDatabase + IdDatabase {
fn fn_scopes(fn_id: FnId) -> Arc<FnScopes> {
type FnScopesQuery;
use fn function::imp::fn_scopes;
}
fn _input_module_items(source_root_id: SourceRootId, module_id: ModuleId) -> Cancelable<Arc<InputModuleItems>> {
type InputModuleItemsQuery;
use fn module::nameres::input_module_items;
}
fn _item_map(source_root_id: SourceRootId) -> Cancelable<Arc<ItemMap>> {
type ItemMapQuery;
use fn module::nameres::item_map;
}
fn _module_tree(source_root_id: SourceRootId) -> Cancelable<Arc<ModuleTree>> {
type ModuleTreeQuery;
use fn module::imp::module_tree;
}
fn _fn_syntax(fn_id: FnId) -> FnDefNode {
type FnSyntaxQuery;
// Don't retain syntax trees in memory
storage volatile;
use fn function::imp::fn_syntax;
}
fn _submodules(source: ModuleSource) -> Cancelable<Arc<Vec<module::imp::Submodule>>> {
type SubmodulesQuery;
use fn module::imp::submodules;
}
}
}
#[derive(Debug)]
pub struct ReferenceDescriptor {
pub range: TextRange,
pub name: String,
}
#[derive(Debug)]
pub struct DeclarationDescriptor<'a> {
pat: ast::BindPat<'a>,
pub range: TextRange,
}
impl<'a> DeclarationDescriptor<'a> {
pub fn new(pat: ast::BindPat) -> DeclarationDescriptor {
let range = pat.syntax().range();
DeclarationDescriptor { pat, range }
}
pub fn find_all_refs(&self) -> Vec<ReferenceDescriptor> {
let name_ptr = LocalSyntaxPtr::new(self.pat.syntax());
let fn_def = match self.pat.syntax().ancestors().find_map(ast::FnDef::cast) {
Some(def) => def,
None => return Default::default(),
};
let fn_scopes = FnScopes::new(fn_def);
let refs: Vec<_> = fn_def
.syntax()
.descendants()
.filter_map(ast::NameRef::cast)
.filter(|name_ref| match resolve_local_name(*name_ref, &fn_scopes) {
None => false,
Some(entry) => entry.ptr() == name_ptr,
})
.map(|name_ref| ReferenceDescriptor {
name: name_ref.syntax().text().to_string(),
range: name_ref.syntax().range(),
})
.collect();
refs
}
}
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