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//@ edition: 2021
#![feature(rustc_private)]
#![deny(warnings)]
extern crate rustc_codegen_ssa;
extern crate rustc_data_structures;
extern crate rustc_driver;
extern crate rustc_errors;
extern crate rustc_hir;
extern crate rustc_metadata;
extern crate rustc_middle;
extern crate rustc_session;
extern crate rustc_span;
extern crate rustc_symbol_mangling;
extern crate rustc_target;
use std::any::Any;
use rustc_codegen_ssa::traits::CodegenBackend;
use rustc_codegen_ssa::{CodegenResults, CrateInfo};
use rustc_data_structures::fx::FxIndexMap;
use rustc_metadata::EncodedMetadata;
use rustc_middle::dep_graph::{WorkProduct, WorkProductId};
use rustc_middle::ty::TyCtxt;
use rustc_session::Session;
use rustc_session::config::OutputFilenames;
struct TheBackend;
impl CodegenBackend for TheBackend {
fn locale_resource(&self) -> &'static str {
""
}
fn codegen_crate(&self, tcx: TyCtxt<'_>) -> Box<dyn Any> {
Box::new(CodegenResults {
modules: vec![],
allocator_module: None,
crate_info: CrateInfo::new(tcx, "fake_target_cpu".to_string()),
})
}
fn join_codegen(
&self,
ongoing_codegen: Box<dyn Any>,
_sess: &Session,
_outputs: &OutputFilenames,
) -> (CodegenResults, FxIndexMap<WorkProductId, WorkProduct>) {
let codegen_results = ongoing_codegen
.downcast::<CodegenResults>()
.expect("in join_codegen: ongoing_codegen is not a CodegenResults");
(*codegen_results, FxIndexMap::default())
}
fn link(
&self,
sess: &Session,
codegen_results: CodegenResults,
_metadata: EncodedMetadata,
outputs: &OutputFilenames,
) {
use std::io::Write;
use rustc_session::config::{CrateType, OutFileName};
use rustc_session::output::out_filename;
let crate_name = codegen_results.crate_info.local_crate_name;
for &crate_type in sess.opts.crate_types.iter() {
if crate_type != CrateType::Rlib {
sess.dcx().fatal(format!("Crate type is {:?}", crate_type));
}
let output_name = out_filename(sess, crate_type, &outputs, crate_name);
match output_name {
OutFileName::Real(ref path) => {
let mut out_file = ::std::fs::File::create(path).unwrap();
writeln!(out_file, "This has been 'compiled' successfully.").unwrap();
}
OutFileName::Stdout => {
let mut stdout = std::io::stdout();
writeln!(stdout, "This has been 'compiled' successfully.").unwrap();
}
}
}
}
}
/// This is the entrypoint for a hot plugged rustc_codegen_llvm
#[no_mangle]
pub fn __rustc_codegen_backend() -> Box<dyn CodegenBackend> {
Box::new(TheBackend)
}
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