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//! This pass just dumps MIR at a specified point.
use std::fs::File;
use std::io;
use rustc_middle::mir::{Body, write_mir_pretty};
use rustc_middle::ty::TyCtxt;
use rustc_session::config::{OutFileName, OutputType};
pub(super) struct Marker(pub &'static str);
impl<'tcx> crate::MirPass<'tcx> for Marker {
fn name(&self) -> &'static str {
self.0
}
fn run_pass(&self, _tcx: TyCtxt<'tcx>, _body: &mut Body<'tcx>) {}
}
pub fn emit_mir(tcx: TyCtxt<'_>) -> io::Result<()> {
match tcx.output_filenames(()).path(OutputType::Mir) {
OutFileName::Stdout => {
let mut f = io::stdout();
write_mir_pretty(tcx, None, &mut f)?;
}
OutFileName::Real(path) => {
let mut f = File::create_buffered(&path)?;
write_mir_pretty(tcx, None, &mut f)?;
if tcx.sess.opts.json_artifact_notifications {
tcx.dcx().emit_artifact_notification(&path, "mir");
}
}
}
Ok(())
}
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