48 lines
1.5 KiB
Rust
48 lines
1.5 KiB
Rust
use ra_syntax::SmolStr;
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pub use ra_db::CrateId;
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use crate::{HirDatabase, Module, Cancelable};
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/// hir::Crate describes a single crate. It's the main inteface with which
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/// crate's dependencies interact. Mostly, it should be just a proxy for the
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/// root module.
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#[derive(Debug)]
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pub struct Crate {
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crate_id: CrateId,
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}
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#[derive(Debug)]
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pub struct CrateDependency {
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pub krate: Crate,
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pub name: SmolStr,
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}
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impl Crate {
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pub(crate) fn new(crate_id: CrateId) -> Crate {
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Crate { crate_id }
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}
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pub fn dependencies(&self, db: &impl HirDatabase) -> Vec<CrateDependency> {
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let crate_graph = db.crate_graph();
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crate_graph
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.dependencies(self.crate_id)
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.map(|dep| {
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let krate = Crate::new(dep.crate_id());
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let name = dep.name.clone();
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CrateDependency { krate, name }
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})
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.collect()
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}
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pub fn root_module(&self, db: &impl HirDatabase) -> Cancelable<Option<Module>> {
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let crate_graph = db.crate_graph();
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let file_id = crate_graph.crate_root(self.crate_id);
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let source_root_id = db.file_source_root(file_id);
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let module_tree = db.module_tree(source_root_id)?;
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// FIXME: teach module tree about crate roots instead of guessing
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let (module_id, _) = ctry!(module_tree
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.modules_with_sources()
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.find(|(_, src)| src.file_id() == file_id));
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let module = Module::new(db, source_root_id, module_id)?;
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Ok(Some(module))
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}
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}
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