diff options
Diffstat (limited to 'src/doc/rustc-dev-guide/examples/rustc-driver-interacting-with-the-ast.rs')
| -rw-r--r-- | src/doc/rustc-dev-guide/examples/rustc-driver-interacting-with-the-ast.rs | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/src/doc/rustc-dev-guide/examples/rustc-driver-interacting-with-the-ast.rs b/src/doc/rustc-dev-guide/examples/rustc-driver-interacting-with-the-ast.rs index 07b09e9df..53f8df81a 100644 --- a/src/doc/rustc-dev-guide/examples/rustc-driver-interacting-with-the-ast.rs +++ b/src/doc/rustc-dev-guide/examples/rustc-driver-interacting-with-the-ast.rs @@ -1,11 +1,7 @@ #![feature(rustc_private)] -// NOTE: For the example to compile, you will need to first run the following: -// rustup component add rustc-dev llvm-tools-preview - -// version: rustc 1.68.0-nightly (935dc0721 2022-12-19) - extern crate rustc_ast_pretty; +extern crate rustc_driver; extern crate rustc_error_codes; extern crate rustc_errors; extern crate rustc_hash; @@ -45,7 +41,6 @@ fn main() { }, crate_cfg: rustc_hash::FxHashSet::default(), crate_check_cfg: CheckCfg::default(), - input_path: None, output_dir: None, output_file: None, file_loader: None, @@ -59,13 +54,12 @@ fn main() { rustc_interface::run_compiler(config, |compiler| { compiler.enter(|queries| { // TODO: add this to -Z unpretty - let ast_krate = queries.parse().unwrap().take(); + let ast_krate = queries.parse().unwrap().get_mut().clone(); for item in ast_krate.items { println!("{}", item_to_string(&item)); } - // Analyze the crate and inspect the types under the cursor. - queries.global_ctxt().unwrap().take().enter(|tcx| { + queries.global_ctxt().unwrap().enter(|tcx| { // Every compilation contains a single crate. let hir_krate = tcx.hir(); // Iterate over the top-level items in the crate, looking for the main function. @@ -78,7 +72,7 @@ fn main() { if let rustc_hir::StmtKind::Local(local) = block.stmts[0].kind { if let Some(expr) = local.init { let hir_id = expr.hir_id; // hir_id identifies the string "Hello, world!" - let def_id = tcx.hir().local_def_id(item.hir_id()); // def_id identifies the main function + let def_id = item.hir_id().owner.def_id; // def_id identifies the main function let ty = tcx.typeck(def_id).node_type(hir_id); println!("{expr:#?}: {ty:?}"); } |