use crate::rap_info;
use colorful::{Color, Colorful};
use rustc_hir::def_id::DefId;
use rustc_middle::mir::{
BasicBlockData, BasicBlocks, Body, LocalDecl, LocalDecls, Operand, Rvalue, Statement,
StatementKind, Terminator, TerminatorKind,
};
use rustc_middle::ty::{self, TyCtxt, TyKind};
const NEXT_LINE: &str = "\n";
const PADDING: &str = " ";
const EXPLAIN: &str = " @ ";
pub trait Display {
fn display(&self) -> String;
}
impl<'tcx> Display for Terminator<'tcx> {
fn display(&self) -> String {
let mut s = String::new();
s += &format!("{}{:?}{}", PADDING, self.kind, self.kind.display());
s
}
}
impl<'tcx> Display for TerminatorKind<'tcx> {
fn display(&self) -> String {
let mut s = String::new();
s += EXPLAIN;
match &self {
TerminatorKind::Goto { .. } => s += "Goto",
TerminatorKind::SwitchInt { .. } => s += "SwitchInt",
TerminatorKind::Return => s += "Return",
TerminatorKind::Unreachable => s += "Unreachable",
TerminatorKind::Drop { .. } => s += "Drop",
TerminatorKind::Assert { .. } => s += "Assert",
TerminatorKind::Yield { .. } => s += "Yield",
TerminatorKind::FalseEdge { .. } => s += "FalseEdge",
TerminatorKind::FalseUnwind { .. } => s += "FalseUnwind",
TerminatorKind::InlineAsm { .. } => s += "InlineAsm",
TerminatorKind::UnwindResume => s += "UnwindResume",
TerminatorKind::UnwindTerminate(..) => s += "UnwindTerminate",
TerminatorKind::CoroutineDrop => s += "CoroutineDrop",
TerminatorKind::Call { func, .. } => match func {
Operand::Constant(constant) => match constant.ty().kind() {
ty::FnDef(id, ..) => {
s += &format!("Call: FnDid: {}", id.index.as_usize()).as_str()
}
_ => (),
},
_ => (),
},
TerminatorKind::TailCall { .. } => todo!(),
};
s
}
}
impl<'tcx> Display for Statement<'tcx> {
fn display(&self) -> String {
let mut s = String::new();
s += &format!("{}{:?}{}", PADDING, self.kind, self.kind.display());
s
}
}
impl<'tcx> Display for StatementKind<'tcx> {
fn display(&self) -> String {
let mut s = String::new();
s += EXPLAIN;
match &self {
StatementKind::Assign(assign) => {
s += &format!("{:?}={:?}{}", assign.0, assign.1, assign.1.display());
}
StatementKind::FakeRead(..) => s += "FakeRead",
StatementKind::SetDiscriminant { .. } => s += "SetDiscriminant",
StatementKind::Deinit(..) => s += "Deinit",
StatementKind::StorageLive(..) => s += "StorageLive",
StatementKind::StorageDead(..) => s += "StorageDead",
StatementKind::Retag(..) => s += "Retag",
StatementKind::AscribeUserType(..) => s += "AscribeUserType",
StatementKind::Coverage(..) => s += "Coverage",
StatementKind::Nop => s += "Nop",
StatementKind::PlaceMention(..) => s += "PlaceMention",
StatementKind::Intrinsic(..) => s += "Intrinsic",
StatementKind::ConstEvalCounter => s += "ConstEvalCounter",
}
s
}
}
impl<'tcx> Display for Rvalue<'tcx> {
fn display(&self) -> String {
let mut s = String::new();
s += EXPLAIN;
match self {
Rvalue::Use(..) => s += "Use",
Rvalue::Repeat(..) => s += "Repeat",
Rvalue::Ref(..) => s += "Ref",
Rvalue::ThreadLocalRef(..) => s += "ThreadLocalRef",
Rvalue::Len(..) => s += "Len",
Rvalue::Cast(..) => s += "Cast",
Rvalue::BinaryOp(..) => s += "BinaryOp",
Rvalue::NullaryOp(..) => s += "NullaryOp",
Rvalue::UnaryOp(..) => s += "UnaryOp",
Rvalue::Discriminant(..) => s += "Discriminant",
Rvalue::Aggregate(..) => s += "Aggregate",
Rvalue::ShallowInitBox(..) => s += "ShallowInitBox",
Rvalue::CopyForDeref(..) => s += "CopyForDeref",
Rvalue::RawPtr(_, _) => s += "RawPtr",
}
s
}
}
impl<'tcx> Display for BasicBlocks<'tcx> {
fn display(&self) -> String {
let mut s = String::new();
for (index, bb) in self.iter().enumerate() {
s += &format!(
"bb {} {{{}{}}}{}",
index,
NEXT_LINE,
bb.display(),
NEXT_LINE
);
}
s
}
}
impl<'tcx> Display for BasicBlockData<'tcx> {
fn display(&self) -> String {
let mut s = String::new();
s += &format!("CleanUp: {}{}", self.is_cleanup, NEXT_LINE);
for stmt in self.statements.iter() {
s += &format!("{}{}", stmt.display(), NEXT_LINE);
}
s += &format!(
"{}{}",
self.terminator.clone().unwrap().display(),
NEXT_LINE
);
s
}
}
impl<'tcx> Display for LocalDecls<'tcx> {
fn display(&self) -> String {
let mut s = String::new();
for (index, ld) in self.iter().enumerate() {
s += &format!("_{}: {} {}", index, ld.display(), NEXT_LINE);
}
s
}
}
impl<'tcx> Display for LocalDecl<'tcx> {
fn display(&self) -> String {
let mut s = String::new();
s += &format!("{}{}", EXPLAIN, self.ty.kind().display());
s
}
}
impl<'tcx> Display for Body<'tcx> {
fn display(&self) -> String {
let mut s = String::new();
s += &self.local_decls.display();
s += &self.basic_blocks.display();
s
}
}
impl<'tcx> Display for TyKind<'tcx> {
fn display(&self) -> String {
let mut s = String::new();
s += &format!("{:?}", self);
s
}
}
impl Display for DefId {
fn display(&self) -> String {
format!("{:?}", self)
}
}
pub struct ShowMir<'tcx> {
pub tcx: TyCtxt<'tcx>,
}
pub fn display_mir(did: DefId, body: &Body) {
rap_info!("{}", did.display().color(Color::LightRed));
rap_info!("{}", body.local_decls.display().color(Color::Green));
rap_info!(
"{}",
body.basic_blocks.display().color(Color::LightGoldenrod2a)
);
}
impl<'tcx> ShowMir<'tcx> {
pub fn new(tcx: TyCtxt<'tcx>) -> Self {
Self { tcx }
}
pub fn start(&mut self) {
rap_info!("Show MIR");
let mir_keys = self.tcx.mir_keys(());
for each_mir in mir_keys {
let def_id = each_mir.to_def_id();
let body = self.tcx.instance_mir(ty::InstanceKind::Item(def_id));
display_mir(def_id, body);
}
}
}