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include ../tools.mk | ||
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all: | ||
/bin/echo || exit 0 # This test requires /bin/echo to exist | ||
$(RUSTC) the_backend.rs --crate-name the_backend --crate-type dylib \ | ||
-o $(TMPDIR)/the_backend.dylib | ||
sleep 10 | ||
$(RUSTC) some_crate.rs --crate-name some_crate --crate-type bin -o $(TMPDIR)/some_crate \ | ||
-Z codegen-backend=$(TMPDIR)/the_backend.dylib -Z unstable-options | ||
grep -x "This has been \"compiled\" succesfully." $(TMPDIR)/some_crate |
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fn main() { | ||
::std::process::exit(1); | ||
} |
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#![feature(rustc_private)] | ||
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extern crate syntax; | ||
extern crate rustc; | ||
extern crate rustc_trans_utils; | ||
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use std::any::Any; | ||
use std::sync::mpsc; | ||
use syntax::symbol::Symbol; | ||
use rustc::session::{Session, CompileIncomplete}; | ||
use rustc::session::config::OutputFilenames; | ||
use rustc::ty::TyCtxt; | ||
use rustc::ty::maps::Providers; | ||
use rustc::middle::cstore::MetadataLoader; | ||
use rustc::dep_graph::DepGraph; | ||
use rustc_trans_utils::trans_crate::{TransCrate, MetadataOnlyTransCrate}; | ||
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struct TheBackend(Box<TransCrate>); | ||
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impl TransCrate for TheBackend { | ||
fn metadata_loader(&self) -> Box<MetadataLoader> { | ||
self.0.metadata_loader() | ||
} | ||
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fn provide(&self, providers: &mut Providers) { | ||
self.0.provide(providers); | ||
} | ||
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fn provide_extern(&self, providers: &mut Providers) { | ||
self.0.provide_extern(providers); | ||
} | ||
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fn trans_crate<'a, 'tcx>( | ||
&self, | ||
tcx: TyCtxt<'a, 'tcx, 'tcx>, | ||
_rx: mpsc::Receiver<Box<Any + Send>> | ||
) -> Box<Any> { | ||
use rustc::hir::def_id::LOCAL_CRATE; | ||
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Box::new(tcx.crate_name(LOCAL_CRATE) as Symbol) | ||
} | ||
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fn join_trans_and_link( | ||
&self, | ||
trans: Box<Any>, | ||
sess: &Session, | ||
_dep_graph: &DepGraph, | ||
outputs: &OutputFilenames, | ||
) -> Result<(), CompileIncomplete> { | ||
use std::io::Write; | ||
use rustc::session::config::CrateType; | ||
use rustc_trans_utils::link::out_filename; | ||
let crate_name = trans.downcast::<Symbol>() | ||
.expect("in join_trans_and_link: trans is not a Symbol"); | ||
for &crate_type in sess.opts.crate_types.iter() { | ||
if crate_type != CrateType::CrateTypeExecutable { | ||
sess.fatal(&format!("Crate type is {:?}", crate_type)); | ||
} | ||
let output_name = | ||
out_filename(sess, crate_type, &outputs, &*crate_name.as_str()); | ||
let mut out_file = ::std::fs::File::create(output_name).unwrap(); | ||
write!(out_file, "This has been \"compiled\" succesfully.").unwrap(); | ||
} | ||
Ok(()) | ||
} | ||
} | ||
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/// This is the entrypoint for a hot plugged rustc_trans | ||
#[no_mangle] | ||
pub extern "C" fn __rustc_codegen_backend(sess: &Session) -> Box<TransCrate> { | ||
Box::new(TheBackend(MetadataOnlyTransCrate::new(sess))) | ||
} |