1 use hir::{Function, Semantics};
2 use ide_db::base_db::FilePosition;
3 use ide_db::RootDatabase;
4 use syntax::{algo::find_node_at_offset, ast, AstNode};
9 // | Editor | Action Name
11 // | VS Code | **Rust Analyzer: View Hir**
13 // image::https://user-images.githubusercontent.com/48062697/113065588-068bdb80-91b1-11eb-9a78-0b4ef1e972fb.gif[]
14 pub(crate) fn view_hir(db: &RootDatabase, position: FilePosition) -> String {
15 body_hir(db, position).unwrap_or_else(|| "Not inside a function body".to_string())
18 fn body_hir(db: &RootDatabase, position: FilePosition) -> Option<String> {
19 let sema = Semantics::new(db);
20 let source_file = sema.parse(position.file_id);
22 let function = find_node_at_offset::<ast::Fn>(source_file.syntax(), position.offset)?;
24 let function: Function = sema.to_def(&function)?;
25 Some(function.debug_hir(db))