//! Hook into libgraphviz for rendering dataflow graphs for MIR.
-use rustc::hir::def_id::DefId;
use rustc::mir::{BasicBlock, Body};
+use rustc_hir::def_id::DefId;
use std::fs;
use std::io;
use crate::util::graphviz_safe_def_name;
-use super::{BitDenotation, DataflowState};
use super::DataflowBuilder;
use super::DebugFormatted;
+use super::{BitDenotation, DataflowState};
pub trait MirWithFlowState<'tcx> {
type BD: BitDenotation<'tcx>;
}
impl<'a, 'tcx, BD> MirWithFlowState<'tcx> for DataflowBuilder<'a, 'tcx, BD>
- where BD: BitDenotation<'tcx>
+where
+ BD: BitDenotation<'tcx>,
{
type BD = BD;
- fn def_id(&self) -> DefId { self.def_id }
- fn body(&self) -> &Body<'tcx> { self.flow_state.body() }
- fn flow_state(&self) -> &DataflowState<'tcx, Self::BD> { &self.flow_state.flow_state }
+ fn def_id(&self) -> DefId {
+ self.def_id
+ }
+ fn body(&self) -> &Body<'tcx> {
+ self.flow_state.body()
+ }
+ fn flow_state(&self) -> &DataflowState<'tcx, Self::BD> {
+ &self.flow_state.flow_state
+ }
}
-struct Graph<'a, 'tcx, MWF, P> where
- MWF: MirWithFlowState<'tcx>
+struct Graph<'a, 'tcx, MWF, P>
+where
+ MWF: MirWithFlowState<'tcx>,
{
mbcx: &'a MWF,
phantom: PhantomData<&'tcx ()>,
pub(crate) fn print_borrowck_graph_to<'a, 'tcx, BD, P>(
mbcx: &DataflowBuilder<'a, 'tcx, BD>,
path: &Path,
- render_idx: P)
- -> io::Result<()>
- where BD: BitDenotation<'tcx>,
- P: Fn(&BD, BD::Idx) -> DebugFormatted,
+ render_idx: P,
+) -> io::Result<()>
+where
+ BD: BitDenotation<'tcx>,
+ P: Fn(&BD, BD::Idx) -> DebugFormatted,
{
let g = Graph { mbcx, phantom: PhantomData, render_idx };
let mut v = Vec::new();
dot::render(&g, &mut v)?;
- debug!("print_borrowck_graph_to path: {} def_id: {:?}",
- path.display(), mbcx.def_id);
+ debug!("print_borrowck_graph_to path: {} def_id: {:?}", path.display(), mbcx.def_id);
fs::write(path, v)
}
pub type Node = BasicBlock;
#[derive(Copy, Clone, PartialEq, Eq, Debug)]
-pub struct Edge { source: BasicBlock, index: usize }
+pub struct Edge {
+ source: BasicBlock,
+ index: usize,
+}
fn outgoing(body: &Body<'_>, bb: BasicBlock) -> Vec<Edge> {
(0..body[bb].terminator().successors().count())
- .map(|index| Edge { source: bb, index: index}).collect()
+ .map(|index| Edge { source: bb, index })
+ .collect()
}
impl<'a, 'tcx, MWF, P> dot::Labeller<'a> for Graph<'a, 'tcx, MWF, P>
- where MWF: MirWithFlowState<'tcx>,
- P: Fn(&MWF::BD, <MWF::BD as BitDenotation<'tcx>>::Idx) -> DebugFormatted,
+where
+ MWF: MirWithFlowState<'tcx>,
+ P: Fn(&MWF::BD, <MWF::BD as BitDenotation<'tcx>>::Idx) -> DebugFormatted,
{
type Node = Node;
type Edge = Edge;
}
fn node_id(&self, n: &Node) -> dot::Id<'_> {
- dot::Id::new(format!("bb_{}", n.index()))
- .unwrap()
+ dot::Id::new(format!("bb_{}", n.index())).unwrap()
}
fn node_label(&self, n: &Node) -> dot::LabelText<'_> {
dot::LabelText::html(String::from_utf8(v).unwrap())
}
-
fn node_shape(&self, _n: &Node) -> Option<dot::LabelText<'_>> {
Some(dot::LabelText::label("none"))
}
}
impl<'a, 'tcx, MWF, P> Graph<'a, 'tcx, MWF, P>
-where MWF: MirWithFlowState<'tcx>,
- P: Fn(&MWF::BD, <MWF::BD as BitDenotation<'tcx>>::Idx) -> DebugFormatted,
+where
+ MWF: MirWithFlowState<'tcx>,
+ P: Fn(&MWF::BD, <MWF::BD as BitDenotation<'tcx>>::Idx) -> DebugFormatted,
{
/// Generate the node label
- fn node_label_internal<W: io::Write>(&self,
- n: &Node,
- w: &mut W,
- block: BasicBlock,
- body: &Body<'_>) -> io::Result<()> {
+ fn node_label_internal<W: io::Write>(
+ &self,
+ n: &Node,
+ w: &mut W,
+ block: BasicBlock,
+ body: &Body<'_>,
+ ) -> io::Result<()> {
// Header rows
const HDRS: [&str; 4] = ["ENTRY", "MIR", "BLOCK GENS", "BLOCK KILLS"];
const HDR_FMT: &str = "bgcolor=\"grey\"";
}
/// Builds the verbose row: full MIR data, and detailed gen/kill/entry sets.
- fn node_label_verbose_row<W: io::Write>(&self,
- n: &Node,
- w: &mut W,
- block: BasicBlock,
- body: &Body<'_>)
- -> io::Result<()> {
+ fn node_label_verbose_row<W: io::Write>(
+ &self,
+ n: &Node,
+ w: &mut W,
+ block: BasicBlock,
+ body: &Body<'_>,
+ ) -> io::Result<()> {
let i = n.index();
macro_rules! dump_set_for {
write!(w, "<td>")?;
let flow = self.mbcx.flow_state();
- let entry_interp = flow.$interpret(&flow.operator,
- flow.sets.$set(i),
- &self.render_idx);
+ let entry_interp =
+ flow.$interpret(&flow.operator, flow.sets.$set(i), &self.render_idx);
for e in &entry_interp {
write!(w, "{:?}<br/>", e)?;
}
write!(w, "</td>")?;
- }
+ };
}
write!(w, "<tr>")?;
{
let data = &body[block];
for (i, statement) in data.statements.iter().enumerate() {
- write!(w, "{}<br align=\"left\"/>",
- dot::escape_html(&format!("{:3}: {:?}", i, statement)))?;
+ write!(
+ w,
+ "{}<br align=\"left\"/>",
+ dot::escape_html(&format!("{:3}: {:?}", i, statement))
+ )?;
}
}
write!(w, "</td>")?;
}
/// Builds the summary row: terminator, gen/kill/entry bit sets.
- fn node_label_final_row<W: io::Write>(&self,
- n: &Node,
- w: &mut W,
- block: BasicBlock,
- body: &Body<'_>)
- -> io::Result<()> {
+ fn node_label_final_row<W: io::Write>(
+ &self,
+ n: &Node,
+ w: &mut W,
+ block: BasicBlock,
+ body: &Body<'_>,
+ ) -> io::Result<()> {
let i = n.index();
let flow = self.mbcx.flow_state();
}
impl<'a, 'tcx, MWF, P> dot::GraphWalk<'a> for Graph<'a, 'tcx, MWF, P>
- where MWF: MirWithFlowState<'tcx>
+where
+ MWF: MirWithFlowState<'tcx>,
{
type Node = Node;
type Edge = Edge;
fn nodes(&self) -> dot::Nodes<'_, Node> {
- self.mbcx.body()
- .basic_blocks()
- .indices()
- .collect::<Vec<_>>()
- .into()
+ self.mbcx.body().basic_blocks().indices().collect::<Vec<_>>().into()
}
fn edges(&self) -> dot::Edges<'_, Edge> {
let body = self.mbcx.body();
- body.basic_blocks()
- .indices()
- .flat_map(|bb| outgoing(body, bb))
- .collect::<Vec<_>>()
- .into()
+ body.basic_blocks().indices().flat_map(|bb| outgoing(body, bb)).collect::<Vec<_>>().into()
}
fn source(&self, edge: &Edge) -> Node {
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