73 lines
2.2 KiB
Rust
73 lines
2.2 KiB
Rust
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#![feature(rustc_private)]
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extern crate syntax;
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extern crate rustc;
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extern crate rustc_trans_utils;
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use std::any::Any;
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use std::sync::mpsc;
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use syntax::symbol::Symbol;
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use rustc::session::{Session, CompileIncomplete};
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use rustc::session::config::OutputFilenames;
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use rustc::ty::TyCtxt;
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use rustc::ty::maps::Providers;
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use rustc::middle::cstore::MetadataLoader;
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use rustc::dep_graph::DepGraph;
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use rustc_trans_utils::trans_crate::{TransCrate, MetadataOnlyTransCrate};
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struct TheBackend(Box<TransCrate>);
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impl TransCrate for TheBackend {
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fn metadata_loader(&self) -> Box<MetadataLoader> {
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self.0.metadata_loader()
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}
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fn provide(&self, providers: &mut Providers) {
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self.0.provide(providers);
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}
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fn provide_extern(&self, providers: &mut Providers) {
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self.0.provide_extern(providers);
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}
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fn trans_crate<'a, 'tcx>(
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&self,
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tcx: TyCtxt<'a, 'tcx, 'tcx>,
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_rx: mpsc::Receiver<Box<Any + Send>>
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) -> Box<Any> {
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use rustc::hir::def_id::LOCAL_CRATE;
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Box::new(tcx.crate_name(LOCAL_CRATE) as Symbol)
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}
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fn join_trans_and_link(
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&self,
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trans: Box<Any>,
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sess: &Session,
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_dep_graph: &DepGraph,
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outputs: &OutputFilenames,
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) -> Result<(), CompileIncomplete> {
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use std::io::Write;
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use rustc::session::config::CrateType;
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use rustc_trans_utils::link::out_filename;
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let crate_name = trans.downcast::<Symbol>()
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.expect("in join_trans_and_link: trans is not a Symbol");
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for &crate_type in sess.opts.crate_types.iter() {
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if crate_type != CrateType::CrateTypeExecutable {
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sess.fatal(&format!("Crate type is {:?}", crate_type));
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}
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let output_name =
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out_filename(sess, crate_type, &outputs, &*crate_name.as_str());
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let mut out_file = ::std::fs::File::create(output_name).unwrap();
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write!(out_file, "This has been \"compiled\" succesfully.").unwrap();
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}
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Ok(())
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}
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}
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/// This is the entrypoint for a hot plugged rustc_trans
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#[no_mangle]
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pub extern "C" fn __rustc_codegen_backend(sess: &Session) -> Box<TransCrate> {
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Box::new(TheBackend(MetadataOnlyTransCrate::new(sess)))
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}
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