mirror of https://github.com/rust-lang/rust
83 lines
2.2 KiB
Rust
83 lines
2.2 KiB
Rust
//@ run-pass
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//! Test that item kind works as expected.
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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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#![feature(control_flow_enum)]
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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::*;
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use std::io::Write;
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use std::ops::ControlFlow;
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const CRATE_NAME: &str = "input";
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/// This function uses the Stable MIR APIs to get information about the test crate.
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fn test_item_kind() -> ControlFlow<()> {
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let items = stable_mir::all_local_items();
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assert_eq!(items.len(), 4);
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// Constructor item.
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for item in items {
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let expected_kind = match item.name().as_str() {
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"Dummy" => ItemKind::Ctor(CtorKind::Fn),
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"dummy" => ItemKind::Fn,
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"unit" => ItemKind::Fn,
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"DUMMY_CONST" => ItemKind::Const,
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name => unreachable!("Unexpected item {name}"),
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};
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assert_eq!(item.kind(), expected_kind, "Mismatched type for {}", item.name());
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}
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ControlFlow::Continue(())
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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 = "item_kind_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-type=lib".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_item_kind).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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pub struct Dummy(u32);
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pub const DUMMY_CONST: Dummy = Dummy(0);
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pub struct DummyUnit;
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pub fn dummy() -> Dummy {{
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Dummy(5)
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}}
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pub fn unit() -> DummyUnit {{
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DummyUnit
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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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