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|
use std::sync::Arc;
use {
FileId,
db::{
Query, QueryRegistry, QueryCtx,
file_set
},
queries::file_syntax,
descriptors::{ModuleDescriptor, ModuleTreeDescriptor},
};
pub(crate) fn register_queries(reg: &mut QueryRegistry) {
reg.add(MODULE_DESCR, "MODULE_DESCR");
reg.add(MODULE_TREE, "MODULE_TREE");
}
pub(crate) fn module_tree(ctx: QueryCtx) -> Arc<ModuleTreeDescriptor> {
ctx.get(MODULE_TREE, ())
}
const MODULE_DESCR: Query<FileId, ModuleDescriptor> = Query(30, |ctx, &file_id| {
let file = file_syntax(ctx, file_id);
ModuleDescriptor::new(file.ast())
});
const MODULE_TREE: Query<(), ModuleTreeDescriptor> = Query(31, |ctx, _| {
let file_set = file_set(ctx);
let mut files = Vec::new();
for &file_id in file_set.0.iter() {
let module_descr = ctx.get(MODULE_DESCR, file_id);
files.push((file_id, module_descr));
}
ModuleTreeDescriptor::new(files.iter().map(|(file_id, descr)| (*file_id, &**descr)), &file_set.1)
});
#[cfg(test)]
mod tests {
use std::collections::HashMap;
use im;
use relative_path::{RelativePath, RelativePathBuf};
use {
db::{Db},
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: Db,
}
impl Fixture {
fn new() -> Fixture {
Fixture {
next_file_id: 1,
fm: im::HashMap::new(),
db: Db::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..]));
let mut new_state = self.db.state().clone();
new_state.file_map.insert(file_id, Arc::new(text.to_string()));
new_state.file_resolver = FileResolverImp::new(
Arc::new(FileMap(self.fm.clone()))
);
self.db = self.db.with_changes(new_state, &[file_id], true);
file_id
}
fn remove_file(&mut self, file_id: FileId) {
self.fm.remove(&file_id);
let mut new_state = self.db.state().clone();
new_state.file_map.remove(&file_id);
new_state.file_resolver = FileResolverImp::new(
Arc::new(FileMap(self.fm.clone()))
);
self.db = self.db.with_changes(new_state, &[file_id], true);
}
fn change_file(&mut self, file_id: FileId, new_text: &str) {
let mut new_state = self.db.state().clone();
new_state.file_map.insert(file_id, Arc::new(new_text.to_string()));
self.db = self.db.with_changes(new_state, &[file_id], false);
}
fn check_parent_modules(
&self,
file_id: FileId,
expected: &[FileId],
queries: &[(&'static str, u64)]
) {
let (tree, events) = self.db.trace_query(|ctx| module_tree(ctx));
let actual = tree.parent_modules(file_id)
.into_iter()
.map(|link| link.owner(&tree))
.collect::<Vec<_>>();
assert_eq!(actual.as_slice(), expected);
let mut counts = HashMap::new();
events.into_iter()
.for_each(|event| *counts.entry(event).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, &[], &[("MODULE_DESCR", 1)]);
let lib = f.add_file("/lib.rs", "mod foo;");
f.check_parent_modules(foo, &[lib], &[("MODULE_DESCR", 1)]);
f.check_parent_modules(foo, &[lib], &[("MODULE_DESCR", 0)]);
f.change_file(lib, "");
f.check_parent_modules(foo, &[], &[("MODULE_DESCR", 1)]);
f.change_file(lib, "mod foo;");
f.check_parent_modules(foo, &[lib], &[("MODULE_DESCR", 1)]);
f.change_file(lib, "mod bar;");
f.check_parent_modules(foo, &[], &[("MODULE_DESCR", 1)]);
f.change_file(lib, "mod foo;");
f.check_parent_modules(foo, &[lib], &[("MODULE_DESCR", 1)]);
f.remove_file(lib);
f.check_parent_modules(foo, &[], &[("MODULE_DESCR", 0)]);
}
}
|
