114 lines
3.3 KiB
Rust
114 lines
3.3 KiB
Rust
//@ run-pass
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//! Test that users are able to use stable mir APIs to retrieve type information from a crate item
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//! definition.
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//@ ignore-stage1
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//@ ignore-cross-compile
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//@ ignore-remote
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//@ ignore-windows-gnu mingw has troubles with linking https://github.com/rust-lang/rust/pull/116837
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//@ edition: 2021
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#![feature(rustc_private)]
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#![feature(assert_matches)]
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#[macro_use]
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extern crate rustc_smir;
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extern crate rustc_driver;
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extern crate rustc_interface;
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extern crate stable_mir;
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use rustc_smir::rustc_internal;
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use stable_mir::ty::{Ty, ForeignItemKind};
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use stable_mir::*;
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use std::io::Write;
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use std::ops::ControlFlow;
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const CRATE_NAME: &str = "crate_def_ty";
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/// Test if we can retrieve type information from different definitions.
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fn test_def_tys() -> ControlFlow<()> {
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let items = stable_mir::all_local_items();
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for item in &items {
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// Type from crate items.
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let ty = item.ty();
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match item.name().as_str() {
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"STATIC_STR" => assert!(ty.kind().is_ref()),
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"CONST_U32" => assert!(ty.kind().is_integral()),
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"main" => { check_fn_def(ty) }
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_ => unreachable!("Unexpected item: `{item:?}`")
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}
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}
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let foreign_items = stable_mir::local_crate().foreign_modules();
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for item in foreign_items[0].module().items() {
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// Type from foreign items.
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let ty = item.ty();
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let item_kind = item.kind();
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let name = item.name();
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match item_kind {
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ForeignItemKind::Fn(fn_def) => {
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assert_eq!(&name, "extern_fn");
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assert_eq!(ty, fn_def.ty());
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check_fn_def(ty)
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}
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ForeignItemKind::Static(def) => {
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assert_eq!(&name, "EXT_STATIC");
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assert_eq!(ty, def.ty());
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assert!(ty.kind().is_integral())
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}
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_ => unreachable!("Unexpected kind: {item_kind:?}")
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};
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}
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ControlFlow::Continue(())
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}
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fn check_fn_def(ty: Ty) {
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let kind = ty.kind();
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let (def, args) = kind.fn_def().expect(&format!("Expected function type, but found: {ty}"));
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assert!(def.ty().kind().is_fn());
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assert_eq!(def.ty_with_args(args), ty);
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}
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/// This test will generate and analyze a dummy crate using the stable mir.
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/// For that, it will first write the dummy crate into a file.
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/// Then it will create a `StableMir` using custom arguments and then
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/// it will run the compiler.
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fn main() {
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let path = "defs_ty_input.rs";
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generate_input(&path).unwrap();
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let args = vec![
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"rustc".to_string(),
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"-Cpanic=abort".to_string(),
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"--crate-name".to_string(),
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CRATE_NAME.to_string(),
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path.to_string(),
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];
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run!(args, test_def_tys).unwrap();
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}
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fn generate_input(path: &str) -> std::io::Result<()> {
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let mut file = std::fs::File::create(path)?;
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write!(
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file,
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r#"
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// We would like to check intrinsic definition.
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#![feature(core_intrinsics)]
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static STATIC_STR: &str = "foo";
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const CONST_U32: u32 = 0u32;
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fn main() {{
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let _c = core::char::from_u32(99);
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let _v = Vec::<u8>::new();
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let _i = std::intrinsics::size_of::<u8>();
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}}
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extern "C" {{
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fn extern_fn(x: i32) -> i32;
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static EXT_STATIC: i32;
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}}
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"#
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)?;
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Ok(())
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}
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