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|
use std::sync::Arc;
use {
FileId,
db::{
Query, Eval, QueryCtx, FileSyntax, Files,
Cache, QueryCache,
},
module_map::resolve_submodule,
};
pub(crate) enum ModuleDescr {}
impl Query for ModuleDescr {
const ID: u32 = 30;
type Params = FileId;
type Output = Arc<descr::ModuleDescr>;
}
enum ResolveSubmodule {}
impl Query for ResolveSubmodule {
const ID: u32 = 31;
type Params = (FileId, descr::Submodule);
type Output = Arc<Vec<FileId>>;
}
enum ParentModule {}
impl Query for ParentModule {
const ID: u32 = 40;
type Params = FileId;
type Output = Arc<Vec<FileId>>;
}
impl Eval for ModuleDescr {
fn eval(ctx: &QueryCtx, file_id: &FileId) -> Arc<descr::ModuleDescr> {
let file = ctx.get::<FileSyntax>(file_id);
Arc::new(descr::ModuleDescr::new(file.ast()))
}
}
impl Eval for ResolveSubmodule {
fn eval(ctx: &QueryCtx, &(file_id, ref submodule): &(FileId, descr::Submodule)) -> Arc<Vec<FileId>> {
let files = ctx.get::<Files>(&());
let res = resolve_submodule(file_id, &submodule.name, &files.file_resolver()).0;
Arc::new(res)
}
}
impl Eval for ParentModule {
fn eval(ctx: &QueryCtx, file_id: &FileId) -> Arc<Vec<FileId>> {
let files = ctx.get::<Files>(&());
let res = files.iter()
.map(|parent_id| (parent_id, ctx.get::<ModuleDescr>(&parent_id)))
.filter(|(parent_id, descr)| {
descr.submodules.iter()
.any(|subm| {
ctx.get::<ResolveSubmodule>(&(*parent_id, subm.clone()))
.iter()
.any(|it| it == file_id)
})
})
.map(|(id, _)| id)
.collect();
Arc::new(res)
}
}
mod descr {
use libsyntax2::{
SmolStr,
ast::{self, NameOwner},
};
#[derive(Debug, Hash)]
pub struct ModuleDescr {
pub submodules: Vec<Submodule>
}
impl ModuleDescr {
pub fn new(root: ast::Root) -> ModuleDescr {
let submodules = root
.modules()
.filter_map(|module| {
let name = module.name()?.text();
if !module.has_semi() {
return None;
}
Some(Submodule { name })
}).collect();
ModuleDescr { submodules } }
}
#[derive(Clone, Hash, PartialEq, Eq, Debug)]
pub struct Submodule {
pub name: SmolStr,
}
}
#[cfg(test)]
mod tests {
use std::collections::HashMap;
use im;
use relative_path::{RelativePath, RelativePathBuf};
use {
db::{Query, DbHost, TraceEventKind},
imp::FileResolverImp,
FileId, FileResolver,
};
use super::*;
#[derive(Debug)]
struct FileMap(im::HashMap<FileId, RelativePathBuf>);
impl FileResolver for FileMap {
fn file_stem(&self, file_id: FileId) -> String {
self.0[&file_id].file_stem().unwrap().to_string()
}
fn resolve(&self, file_id: FileId, rel: &RelativePath) -> Option<FileId> {
let path = self.0[&file_id].join(rel).normalize();
self.0.iter()
.filter_map(|&(id, ref p)| Some(id).filter(|_| p == &path))
.next()
}
}
struct Fixture {
next_file_id: u32,
fm: im::HashMap<FileId, RelativePathBuf>,
db: DbHost,
}
impl Fixture {
fn new() -> Fixture {
Fixture {
next_file_id: 1,
fm: im::HashMap::new(),
db: DbHost::new(),
}
}
fn add_file(&mut self, path: &str, text: &str) -> FileId {
assert!(path.starts_with("/"));
let file_id = FileId(self.next_file_id);
self.next_file_id += 1;
self.fm.insert(file_id, RelativePathBuf::from(&path[1..]));
self.db.change_file(file_id, Some(text.to_string()));
self.db.set_file_resolver(FileResolverImp::new(
Arc::new(FileMap(self.fm.clone()))
));
file_id
}
fn remove_file(&mut self, file_id: FileId) {
self.fm.remove(&file_id);
self.db.change_file(file_id, None);
self.db.set_file_resolver(FileResolverImp::new(
Arc::new(FileMap(self.fm.clone()))
))
}
fn change_file(&mut self, file_id: FileId, new_text: &str) {
self.db.change_file(file_id, Some(new_text.to_string()));
}
fn check_parent_modules(
&self,
file_id: FileId,
expected: &[FileId],
queries: &[(u32, u64)]
) {
let ctx = self.db.query_ctx();
let actual = ctx.get::<ParentModule>(&file_id);
assert_eq!(actual.as_slice(), expected);
let mut counts = HashMap::new();
ctx.trace.borrow().iter()
.filter(|event| event.kind == TraceEventKind::Evaluating)
.for_each(|event| *counts.entry(event.query_id).or_insert(0) += 1);
for &(query_id, expected_count) in queries.iter() {
let actual_count = *counts.get(&query_id).unwrap_or(&0);
assert_eq!(
actual_count,
expected_count,
"counts for {} differ",
query_id,
)
}
}
}
#[test]
fn test_parent_module() {
let mut f = Fixture::new();
let foo = f.add_file("/foo.rs", "");
// f.check_parent_modules(foo, &[], &[(ModuleDescr::ID, 1)]);
let lib = f.add_file("/lib.rs", "mod foo;");
f.check_parent_modules(foo, &[lib], &[(ModuleDescr::ID, 2)]);
f.check_parent_modules(foo, &[lib], &[(ModuleDescr::ID, 0)]);
f.change_file(lib, "");
f.check_parent_modules(foo, &[], &[(ModuleDescr::ID, 2)]);
// f.change_file(lib, "mod foo;");
// f.check_parent_modules(foo, &[lib], &[(ModuleDescr::ID, 2)]);
// f.change_file(lib, "mod bar;");
// f.check_parent_modules(foo, &[], &[(ModuleDescr::ID, 2)]);
// f.change_file(lib, "mod foo;");
// f.check_parent_modules(foo, &[lib], &[(ModuleDescr::ID, 2)]);
// f.remove_file(lib);
// f.check_parent_modules(foo, &[], &[(ModuleDescr::ID, 1)]);
}
}
|
