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Minimize FileLoader interface

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This commit is contained in:
Aleksey Kladov 2020-06-05 16:45:20 +02:00
parent 9c52f527a1
commit bbb40d7463
6 changed files with 35 additions and 79 deletions
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53
crates/ra_db/src/lib.rs
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@ -89,14 +89,13 @@ pub const DEFAULT_LRU_CAP: usize = 128;
pub trait FileLoader {
/// Text of the file.
fn file_text(&self, file_id: FileId) -> Arc<String>;
/// Note that we intentionally accept a `&str` and not a `&Path` here. This
/// method exists to handle `#[path = "/some/path.rs"] mod foo;` and such,
/// so the input is guaranteed to be utf-8 string. We might introduce
/// `struct StrPath(str)` for clarity some day, but it's a bit messy, so we
/// get by with a `&str` for the time being.
fn resolve_path(&self, anchor: FileId, path: &str) -> Option<FileId>;
fn relevant_crates(&self, file_id: FileId) -> Arc<Vec<CrateId>>;
fn resolve_extern_path(
&self,
extern_id: ExternSourceId,
relative_path: &RelativePath,
) -> Option<FileId>;
}
/// Database which stores all significant input facts: source code and project
@ -154,34 +153,30 @@ impl<T: SourceDatabaseExt> FileLoader for FileLoaderDelegate<&'_ T> {
fn file_text(&self, file_id: FileId) -> Arc<String> {
SourceDatabaseExt::file_text(self.0, file_id)
}
/// Note that we intentionally accept a `&str` and not a `&Path` here. This
/// method exists to handle `#[path = "/some/path.rs"] mod foo;` and such,
/// so the input is guaranteed to be utf-8 string. We might introduce
/// `struct StrPath(str)` for clarity some day, but it's a bit messy, so we
/// get by with a `&str` for the time being.
fn resolve_path(&self, anchor: FileId, path: &str) -> Option<FileId> {
let rel_path = {
let mut rel_path = self.0.file_relative_path(anchor);
assert!(rel_path.pop());
rel_path.push(path);
rel_path.normalize()
};
let source_root = self.0.file_source_root(anchor);
let source_root = self.0.source_root(source_root);
source_root.file_by_relative_path(&rel_path)
// FIXME: this *somehow* should be platform agnostic...
if std::path::Path::new(path).is_absolute() {
let krate = *self.relevant_crates(anchor).get(0)?;
let (extern_source_id, relative_file) =
self.0.crate_graph()[krate].extern_source.extern_path(path)?;
let source_root = self.0.source_root(SourceRootId(extern_source_id.0));
source_root.file_by_relative_path(&relative_file)
} else {
let rel_path = {
let mut rel_path = self.0.file_relative_path(anchor);
assert!(rel_path.pop());
rel_path.push(path);
rel_path.normalize()
};
let source_root = self.0.file_source_root(anchor);
let source_root = self.0.source_root(source_root);
source_root.file_by_relative_path(&rel_path)
}
}
fn relevant_crates(&self, file_id: FileId) -> Arc<Vec<CrateId>> {
let source_root = self.0.file_source_root(file_id);
self.0.source_root_crates(source_root)
}
fn resolve_extern_path(
&self,
extern_id: ExternSourceId,
relative_path: &RelativePath,
) -> Option<FileId> {
let source_root = self.0.source_root(SourceRootId(extern_id.0));
source_root.file_by_relative_path(&relative_path)
}
}