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pub(crate) mod module;
pub(crate) mod function;
use std::sync::Arc;
use ra_syntax::{
SmolStr,
ast::{self, AstNode, FnDefNode},
TextRange
};
use crate::{
FileId, Cancelable,
db::SyntaxDatabase,
descriptors::module::{ModuleTree, ModuleId, ModuleScope},
descriptors::function::{FnId, FnScopes, resolve_local_name},
input::SourceRootId,
syntax_ptr::{SyntaxPtrDatabase, LocalSyntaxPtr},
};
salsa::query_group! {
pub(crate) trait DescriptorDatabase: SyntaxDatabase + SyntaxPtrDatabase {
fn module_tree(source_root_id: SourceRootId) -> Cancelable<Arc<ModuleTree>> {
type ModuleTreeQuery;
use fn module::imp::module_tree;
}
fn submodules(file_id: FileId) -> Cancelable<Arc<Vec<SmolStr>>> {
type SubmodulesQuery;
use fn module::imp::submodules;
}
fn module_scope(source_root_id: SourceRootId, module_id: ModuleId) -> Cancelable<Arc<ModuleScope>> {
type ModuleScopeQuery;
use fn module::imp::module_scope;
}
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 fn_scopes(fn_id: FnId) -> Arc<FnScopes> {
type FnScopesQuery;
use fn function::imp::fn_scopes;
}
}
}
#[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
}
}
|
