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//@ run-pass
//! Test that item kind works as expected.
//@ ignore-stage1
//@ ignore-cross-compile
//@ ignore-remote
//@ ignore-windows-gnu mingw has troubles with linking https://github.com/rust-lang/rust/pull/116837
//@ edition: 2021
#![feature(rustc_private)]
#![feature(assert_matches)]
#![feature(control_flow_enum)]
#[macro_use]
extern crate rustc_smir;
extern crate rustc_driver;
extern crate rustc_interface;
extern crate stable_mir;
use rustc_smir::rustc_internal;
use stable_mir::*;
use std::io::Write;
use std::ops::ControlFlow;
const CRATE_NAME: &str = "input";
/// This function uses the Stable MIR APIs to get information about the test crate.
fn test_item_kind() -> ControlFlow<()> {
let items = stable_mir::all_local_items();
assert_eq!(items.len(), 4);
// Constructor item.
for item in items {
let expected_kind = match item.name().as_str() {
"Dummy" => ItemKind::Ctor(CtorKind::Fn),
"dummy" => ItemKind::Fn,
"unit" => ItemKind::Fn,
"DUMMY_CONST" => ItemKind::Const,
name => unreachable!("Unexpected item {name}"),
};
assert_eq!(item.kind(), expected_kind, "Mismatched type for {}", item.name());
}
ControlFlow::Continue(())
}
/// This test will generate and analyze a dummy crate using the stable mir.
/// For that, it will first write the dummy crate into a file.
/// Then it will create a `StableMir` using custom arguments and then
/// it will run the compiler.
fn main() {
let path = "item_kind_input.rs";
generate_input(&path).unwrap();
let args = vec![
"rustc".to_string(),
"-Cpanic=abort".to_string(),
"--crate-type=lib".to_string(),
"--crate-name".to_string(),
CRATE_NAME.to_string(),
path.to_string(),
];
run!(args, test_item_kind).unwrap();
}
fn generate_input(path: &str) -> std::io::Result<()> {
let mut file = std::fs::File::create(path)?;
write!(
file,
r#"
pub struct Dummy(u32);
pub const DUMMY_CONST: Dummy = Dummy(0);
pub struct DummyUnit;
pub fn dummy() -> Dummy {{
Dummy(5)
}}
pub fn unit() -> DummyUnit {{
DummyUnit
}}
"#
)?;
Ok(())
}
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