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use std::sync::Arc;
use ra_syntax::{
ast::{AstNode, FnDef, FnDefNode},
};
use crate::{
descriptors::{
DescriptorDatabase,
function::{FnId, FnScopes},
},
};
/// Resolve `FnId` to the corresponding `SyntaxNode`
/// TODO: this should return something more type-safe then `SyntaxNode`
pub(crate) fn fn_syntax(db: &impl DescriptorDatabase, fn_id: FnId) -> FnDefNode {
let syntax = db.resolve_syntax_ptr(fn_id.0);
let fn_def = FnDef::cast(syntax.borrowed()).unwrap();
FnDefNode::new(fn_def)
}
pub(crate) fn fn_scopes(db: &impl DescriptorDatabase, fn_id: FnId) -> Arc<FnScopes> {
let syntax = db.fn_syntax(fn_id);
let res = FnScopes::new(syntax.ast());
Arc::new(res)
}
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