1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
#![feature(rustc_private)]
extern crate syntax;
extern crate rustc;
extern crate rustc_codegen_utils;
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::query::Providers;
use rustc::middle::cstore::MetadataLoader;
use rustc::dep_graph::DepGraph;
use rustc_codegen_utils::codegen_backend::{CodegenBackend, MetadataOnlyCodegenBackend};
struct TheBackend(Box<CodegenBackend>);
impl CodegenBackend for TheBackend {
fn metadata_loader(&self) -> Box<MetadataLoader + Sync> {
self.0.metadata_loader()
}
fn provide(&self, providers: &mut Providers) {
self.0.provide(providers);
}
fn provide_extern(&self, providers: &mut Providers) {
self.0.provide_extern(providers);
}
fn codegen_crate<'a, 'tcx>(
&self,
tcx: TyCtxt<'a, 'tcx, 'tcx>,
_rx: mpsc::Receiver<Box<Any + Send>>
) -> Box<Any> {
use rustc::hir::def_id::LOCAL_CRATE;
Box::new(tcx.crate_name(LOCAL_CRATE) as Symbol)
}
fn join_codegen_and_link(
&self,
ongoing_codegen: Box<Any>,
sess: &Session,
_dep_graph: &DepGraph,
outputs: &OutputFilenames,
) -> Result<(), CompileIncomplete> {
use std::io::Write;
use rustc::session::config::CrateType;
use rustc_codegen_utils::link::out_filename;
let crate_name = ongoing_codegen.downcast::<Symbol>()
.expect("in join_codegen_and_link: ongoing_codegen is not a Symbol");
for &crate_type in sess.opts.crate_types.iter() {
if crate_type != CrateType::Rlib {
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\" successfully.").unwrap();
}
Ok(())
}
}
/// This is the entrypoint for a hot plugged rustc_codegen_llvm
#[no_mangle]
pub fn __rustc_codegen_backend() -> Box<CodegenBackend> {
Box::new(TheBackend(MetadataOnlyCodegenBackend::boxed()))
}
|
