93 lines
3.7 KiB
Rust
93 lines
3.7 KiB
Rust
#![feature(rustc_private)]
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extern crate rustc_driver;
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extern crate rustc_error_codes;
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extern crate rustc_errors;
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extern crate rustc_hash;
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extern crate rustc_hir;
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extern crate rustc_interface;
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extern crate rustc_session;
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extern crate rustc_span;
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use std::{path, process, str, sync::Arc};
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use rustc_errors::registry;
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use rustc_hash::FxHashMap;
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use rustc_session::config;
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fn main() {
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let out = process::Command::new("rustc")
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.arg("--print=sysroot")
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.current_dir(".")
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.output()
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.unwrap();
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let sysroot = str::from_utf8(&out.stdout).unwrap().trim();
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let config = rustc_interface::Config {
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// Command line options
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opts: config::Options {
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maybe_sysroot: Some(path::PathBuf::from(sysroot)),
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..config::Options::default()
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},
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// cfg! configuration in addition to the default ones
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crate_cfg: Vec::new(), // FxHashSet<(String, Option<String>)>
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crate_check_cfg: Vec::new(), // CheckCfg
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input: config::Input::Str {
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name: rustc_span::FileName::Custom("main.rs".into()),
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input: r#"
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static HELLO: &str = "Hello, world!";
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fn main() {
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println!("{HELLO}");
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}
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"#
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.into(),
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},
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output_dir: None, // Option<PathBuf>
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output_file: None, // Option<PathBuf>
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file_loader: None, // Option<Box<dyn FileLoader + Send + Sync>>
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locale_resources: rustc_driver::DEFAULT_LOCALE_RESOURCES,
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lint_caps: FxHashMap::default(), // FxHashMap<lint::LintId, lint::Level>
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// This is a callback from the driver that is called when [`ParseSess`] is created.
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psess_created: None, //Option<Box<dyn FnOnce(&mut ParseSess) + Send>>
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// This is a callback from the driver that is called when we're registering lints;
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// it is called during plugin registration when we have the LintStore in a non-shared state.
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//
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// Note that if you find a Some here you probably want to call that function in the new
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// function being registered.
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register_lints: None, // Option<Box<dyn Fn(&Session, &mut LintStore) + Send + Sync>>
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// This is a callback from the driver that is called just after we have populated
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// the list of queries.
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//
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// The second parameter is local providers and the third parameter is external providers.
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override_queries: None, // Option<fn(&Session, &mut ty::query::Providers<'_>, &mut ty::query::Providers<'_>)>
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// Registry of diagnostics codes.
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registry: registry::Registry::new(rustc_errors::codes::DIAGNOSTICS),
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make_codegen_backend: None,
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expanded_args: Vec::new(),
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ice_file: None,
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hash_untracked_state: None,
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using_internal_features: Arc::default(),
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};
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rustc_interface::run_compiler(config, |compiler| {
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compiler.enter(|queries| {
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// Parse the program and print the syntax tree.
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let parse = queries.parse().unwrap().get_mut().clone();
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println!("{parse:?}");
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// Analyze the program and inspect the types of definitions.
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queries.global_ctxt().unwrap().enter(|tcx| {
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for id in tcx.hir().items() {
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let hir = tcx.hir();
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let item = hir.item(id);
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match item.kind {
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rustc_hir::ItemKind::Static(_, _, _) | rustc_hir::ItemKind::Fn(_, _, _) => {
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let name = item.ident;
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let ty = tcx.type_of(item.hir_id().owner.def_id);
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println!("{name:?}:\t{ty:?}")
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}
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_ => (),
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}
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}
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})
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});
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});
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}
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