75 lines
2.0 KiB
Rust
75 lines
2.0 KiB
Rust
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//@ run-pass
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//! Test that users are able to use serialize stable MIR constructs.
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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 rustc_middle;
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extern crate stable_mir;
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extern crate serde;
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extern crate serde_json;
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use rustc_middle::ty::TyCtxt;
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use rustc_smir::rustc_internal;
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use stable_mir::mir::Body;
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use std::io::{Write, BufWriter};
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use std::ops::ControlFlow;
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use serde_json::to_string;
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const CRATE_NAME: &str = "input";
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fn serialize_to_json(_tcx: TyCtxt<'_>) -> ControlFlow<()> {
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let path = "output.json";
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let mut writer = BufWriter::new(std::fs::File::create(path)
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.expect("Failed to create path"));
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let local_crate = stable_mir::local_crate();
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let items: Vec<Body> = stable_mir::all_local_items()
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.iter()
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.map(|item| { item.body() })
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.collect();
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let crate_data = ( local_crate.name, items );
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writer.write_all(to_string(&crate_data)
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.expect("serde_json failed")
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.as_bytes()).expect("JSON serialization failed");
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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 = "internal_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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"--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_with_tcx!(args, serialize_to_json).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 fn main() {{
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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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