//! The various pretty-printing routines. use rustc::cfg; use rustc::cfg::graphviz::LabelledCFG; use rustc::hir; use rustc::hir::map as hir_map; use rustc::hir::map::blocks; use rustc::hir::print as pprust_hir; use rustc::hir::def_id::LOCAL_CRATE; use rustc::session::Session; use rustc::session::config::Input; use rustc::ty::{self, TyCtxt}; use rustc::util::common::ErrorReported; use rustc_interface::util::ReplaceBodyWithLoop; use rustc_borrowck as borrowck; use rustc_borrowck::graphviz as borrowck_dot; use rustc_mir::util::{write_mir_pretty, write_mir_graphviz}; use syntax::ast; use syntax::mut_visit::MutVisitor; use syntax::print::{pprust}; use syntax::print::pprust::PrintState; use syntax_pos::FileName; use graphviz as dot; use std::cell::Cell; use std::fs::File; use std::io::{self, Write}; use std::option; use std::path::Path; use std::str::FromStr; pub use self::UserIdentifiedItem::*; pub use self::PpSourceMode::*; pub use self::PpMode::*; use self::NodesMatchingUII::*; use crate::abort_on_err; use crate::source_name; #[derive(Copy, Clone, PartialEq, Debug)] pub enum PpSourceMode { PpmNormal, PpmEveryBodyLoops, PpmExpanded, PpmIdentified, PpmExpandedIdentified, PpmExpandedHygiene, PpmTyped, } #[derive(Copy, Clone, PartialEq, Debug)] pub enum PpFlowGraphMode { Default, /// Drops the labels from the edges in the flowgraph output. This /// is mostly for use in the -Z unpretty flowgraph run-make tests, /// since the labels are largely uninteresting in those cases and /// have become a pain to maintain. UnlabelledEdges, } #[derive(Copy, Clone, PartialEq, Debug)] pub enum PpMode { PpmSource(PpSourceMode), PpmHir(PpSourceMode), PpmHirTree(PpSourceMode), PpmFlowGraph(PpFlowGraphMode), PpmMir, PpmMirCFG, } impl PpMode { pub fn needs_ast_map(&self, opt_uii: &Option) -> bool { match *self { PpmSource(PpmNormal) | PpmSource(PpmEveryBodyLoops) | PpmSource(PpmIdentified) => opt_uii.is_some(), PpmSource(PpmExpanded) | PpmSource(PpmExpandedIdentified) | PpmSource(PpmExpandedHygiene) | PpmHir(_) | PpmHirTree(_) | PpmMir | PpmMirCFG | PpmFlowGraph(_) => true, PpmSource(PpmTyped) => panic!("invalid state"), } } pub fn needs_analysis(&self) -> bool { match *self { PpmMir | PpmMirCFG | PpmFlowGraph(_) => true, _ => false, } } } pub fn parse_pretty(sess: &Session, name: &str, extended: bool) -> (PpMode, Option) { let mut split = name.splitn(2, '='); let first = split.next().unwrap(); let opt_second = split.next(); let first = match (first, extended) { ("normal", _) => PpmSource(PpmNormal), ("identified", _) => PpmSource(PpmIdentified), ("everybody_loops", true) => PpmSource(PpmEveryBodyLoops), ("expanded", _) => PpmSource(PpmExpanded), ("expanded,identified", _) => PpmSource(PpmExpandedIdentified), ("expanded,hygiene", _) => PpmSource(PpmExpandedHygiene), ("hir", true) => PpmHir(PpmNormal), ("hir,identified", true) => PpmHir(PpmIdentified), ("hir,typed", true) => PpmHir(PpmTyped), ("hir-tree", true) => PpmHirTree(PpmNormal), ("mir", true) => PpmMir, ("mir-cfg", true) => PpmMirCFG, ("flowgraph", true) => PpmFlowGraph(PpFlowGraphMode::Default), ("flowgraph,unlabelled", true) => PpmFlowGraph(PpFlowGraphMode::UnlabelledEdges), _ => { if extended { sess.fatal(&format!("argument to `unpretty` must be one of `normal`, \ `expanded`, `flowgraph[,unlabelled]=`, \ `identified`, `expanded,identified`, `everybody_loops`, \ `hir`, `hir,identified`, `hir,typed`, `hir-tree`, \ `mir` or `mir-cfg`; got {}", name)); } else { sess.fatal(&format!("argument to `pretty` must be one of `normal`, `expanded`, \ `identified`, or `expanded,identified`; got {}", name)); } } }; let opt_second = opt_second.and_then(|s| s.parse::().ok()); (first, opt_second) } // This slightly awkward construction is to allow for each PpMode to // choose whether it needs to do analyses (which can consume the // Session) and then pass through the session (now attached to the // analysis results) on to the chosen pretty-printer, along with the // `&PpAnn` object. // // Note that since the `&PrinterSupport` is freshly constructed on each // call, it would not make sense to try to attach the lifetime of `self` // to the lifetime of the `&PrinterObject`. // // (The `use_once_payload` is working around the current lack of once // functions in the compiler.) impl PpSourceMode { /// Constructs a `PrinterSupport` object and passes it to `f`. fn call_with_pp_support<'tcx, A, F>( &self, sess: &'tcx Session, tcx: Option>, f: F, ) -> A where F: FnOnce(&dyn PrinterSupport) -> A, { match *self { PpmNormal | PpmEveryBodyLoops | PpmExpanded => { let annotation = NoAnn { sess, tcx, }; f(&annotation) } PpmIdentified | PpmExpandedIdentified => { let annotation = IdentifiedAnnotation { sess, tcx, }; f(&annotation) } PpmExpandedHygiene => { let annotation = HygieneAnnotation { sess, }; f(&annotation) } _ => panic!("Should use call_with_pp_support_hir"), } } fn call_with_pp_support_hir<'tcx, A, F>(&self, tcx: TyCtxt<'tcx>, f: F) -> A where F: FnOnce(&dyn HirPrinterSupport<'_>, &hir::Crate) -> A, { match *self { PpmNormal => { let annotation = NoAnn { sess: tcx.sess, tcx: Some(tcx), }; f(&annotation, tcx.hir().forest.krate()) } PpmIdentified => { let annotation = IdentifiedAnnotation { sess: tcx.sess, tcx: Some(tcx), }; f(&annotation, tcx.hir().forest.krate()) } PpmTyped => { abort_on_err(tcx.analysis(LOCAL_CRATE), tcx.sess); let empty_tables = ty::TypeckTables::empty(None); let annotation = TypedAnnotation { tcx, tables: Cell::new(&empty_tables) }; tcx.dep_graph.with_ignore(|| { f(&annotation, tcx.hir().forest.krate()) }) } _ => panic!("Should use call_with_pp_support"), } } } trait PrinterSupport: pprust::PpAnn { /// Provides a uniform interface for re-extracting a reference to a /// `Session` from a value that now owns it. fn sess<'a>(&'a self) -> &'a Session; /// Produces the pretty-print annotation object. /// /// (Rust does not yet support upcasting from a trait object to /// an object for one of its super-traits.) fn pp_ann<'a>(&'a self) -> &'a dyn pprust::PpAnn; } trait HirPrinterSupport<'hir>: pprust_hir::PpAnn { /// Provides a uniform interface for re-extracting a reference to a /// `Session` from a value that now owns it. fn sess<'a>(&'a self) -> &'a Session; /// Provides a uniform interface for re-extracting a reference to an /// `hir_map::Map` from a value that now owns it. fn hir_map<'a>(&'a self) -> Option<&'a hir_map::Map<'hir>>; /// Produces the pretty-print annotation object. /// /// (Rust does not yet support upcasting from a trait object to /// an object for one of its super-traits.) fn pp_ann<'a>(&'a self) -> &'a dyn pprust_hir::PpAnn; /// Computes an user-readable representation of a path, if possible. fn node_path(&self, id: ast::NodeId) -> Option { self.hir_map().and_then(|map| { let hir_id = map.node_to_hir_id(id); map.def_path_from_hir_id(hir_id) }).map(|path| { path.data .into_iter() .map(|elem| elem.data.to_string()) .collect::>() .join("::") }) } } struct NoAnn<'hir> { sess: &'hir Session, tcx: Option>, } impl<'hir> PrinterSupport for NoAnn<'hir> { fn sess<'a>(&'a self) -> &'a Session { self.sess } fn pp_ann<'a>(&'a self) -> &'a dyn pprust::PpAnn { self } } impl<'hir> HirPrinterSupport<'hir> for NoAnn<'hir> { fn sess<'a>(&'a self) -> &'a Session { self.sess } fn hir_map<'a>(&'a self) -> Option<&'a hir_map::Map<'hir>> { self.tcx.map(|tcx| tcx.hir()) } fn pp_ann<'a>(&'a self) -> &'a dyn pprust_hir::PpAnn { self } } impl<'hir> pprust::PpAnn for NoAnn<'hir> {} impl<'hir> pprust_hir::PpAnn for NoAnn<'hir> { fn nested(&self, state: &mut pprust_hir::State<'_>, nested: pprust_hir::Nested) -> io::Result<()> { if let Some(tcx) = self.tcx { pprust_hir::PpAnn::nested(tcx.hir(), state, nested) } else { Ok(()) } } } struct IdentifiedAnnotation<'hir> { sess: &'hir Session, tcx: Option>, } impl<'hir> PrinterSupport for IdentifiedAnnotation<'hir> { fn sess<'a>(&'a self) -> &'a Session { self.sess } fn pp_ann<'a>(&'a self) -> &'a dyn pprust::PpAnn { self } } impl<'hir> pprust::PpAnn for IdentifiedAnnotation<'hir> { fn pre(&self, s: &mut pprust::State<'_>, node: pprust::AnnNode<'_>) -> io::Result<()> { match node { pprust::AnnNode::Expr(_) => s.popen(), _ => Ok(()), } } fn post(&self, s: &mut pprust::State<'_>, node: pprust::AnnNode<'_>) -> io::Result<()> { match node { pprust::AnnNode::Ident(_) | pprust::AnnNode::Name(_) => Ok(()), pprust::AnnNode::Item(item) => { s.s.space()?; s.synth_comment(item.id.to_string()) } pprust::AnnNode::SubItem(id) => { s.s.space()?; s.synth_comment(id.to_string()) } pprust::AnnNode::Block(blk) => { s.s.space()?; s.synth_comment(format!("block {}", blk.id)) } pprust::AnnNode::Expr(expr) => { s.s.space()?; s.synth_comment(expr.id.to_string())?; s.pclose() } pprust::AnnNode::Pat(pat) => { s.s.space()?; s.synth_comment(format!("pat {}", pat.id)) } } } } impl<'hir> HirPrinterSupport<'hir> for IdentifiedAnnotation<'hir> { fn sess<'a>(&'a self) -> &'a Session { self.sess } fn hir_map<'a>(&'a self) -> Option<&'a hir_map::Map<'hir>> { self.tcx.map(|tcx| tcx.hir()) } fn pp_ann<'a>(&'a self) -> &'a dyn pprust_hir::PpAnn { self } } impl<'hir> pprust_hir::PpAnn for IdentifiedAnnotation<'hir> { fn nested(&self, state: &mut pprust_hir::State<'_>, nested: pprust_hir::Nested) -> io::Result<()> { if let Some(ref tcx) = self.tcx { pprust_hir::PpAnn::nested(tcx.hir(), state, nested) } else { Ok(()) } } fn pre(&self, s: &mut pprust_hir::State<'_>, node: pprust_hir::AnnNode<'_>) -> io::Result<()> { match node { pprust_hir::AnnNode::Expr(_) => s.popen(), _ => Ok(()), } } fn post(&self, s: &mut pprust_hir::State<'_>, node: pprust_hir::AnnNode<'_>) -> io::Result<()> { match node { pprust_hir::AnnNode::Name(_) => Ok(()), pprust_hir::AnnNode::Item(item) => { s.s.space()?; s.synth_comment(format!("hir_id: {} hir local_id: {}", item.hir_id, item.hir_id.local_id.as_u32())) } pprust_hir::AnnNode::SubItem(id) => { s.s.space()?; s.synth_comment(id.to_string()) } pprust_hir::AnnNode::Block(blk) => { s.s.space()?; s.synth_comment(format!("block hir_id: {} hir local_id: {}", blk.hir_id, blk.hir_id.local_id.as_u32())) } pprust_hir::AnnNode::Expr(expr) => { s.s.space()?; s.synth_comment(format!("expr hir_id: {} hir local_id: {}", expr.hir_id, expr.hir_id.local_id.as_u32()))?; s.pclose() } pprust_hir::AnnNode::Pat(pat) => { s.s.space()?; s.synth_comment(format!("pat hir_id: {} hir local_id: {}", pat.hir_id, pat.hir_id.local_id.as_u32())) } } } } struct HygieneAnnotation<'a> { sess: &'a Session } impl<'a> PrinterSupport for HygieneAnnotation<'a> { fn sess(&self) -> &Session { self.sess } fn pp_ann(&self) -> &dyn pprust::PpAnn { self } } impl<'a> pprust::PpAnn for HygieneAnnotation<'a> { fn post(&self, s: &mut pprust::State<'_>, node: pprust::AnnNode<'_>) -> io::Result<()> { match node { pprust::AnnNode::Ident(&ast::Ident { name, span }) => { s.s.space()?; // FIXME #16420: this doesn't display the connections // between syntax contexts s.synth_comment(format!("{}{:?}", name.as_u32(), span.ctxt())) } pprust::AnnNode::Name(&name) => { s.s.space()?; s.synth_comment(name.as_u32().to_string()) } _ => Ok(()), } } } struct TypedAnnotation<'a, 'tcx> { tcx: TyCtxt<'tcx>, tables: Cell<&'a ty::TypeckTables<'tcx>>, } impl<'b, 'tcx> HirPrinterSupport<'tcx> for TypedAnnotation<'b, 'tcx> { fn sess<'a>(&'a self) -> &'a Session { &self.tcx.sess } fn hir_map<'a>(&'a self) -> Option<&'a hir_map::Map<'tcx>> { Some(&self.tcx.hir()) } fn pp_ann<'a>(&'a self) -> &'a dyn pprust_hir::PpAnn { self } fn node_path(&self, id: ast::NodeId) -> Option { Some(self.tcx.def_path_str(self.tcx.hir().local_def_id(id))) } } impl<'a, 'tcx> pprust_hir::PpAnn for TypedAnnotation<'a, 'tcx> { fn nested(&self, state: &mut pprust_hir::State<'_>, nested: pprust_hir::Nested) -> io::Result<()> { let old_tables = self.tables.get(); if let pprust_hir::Nested::Body(id) = nested { self.tables.set(self.tcx.body_tables(id)); } pprust_hir::PpAnn::nested(self.tcx.hir(), state, nested)?; self.tables.set(old_tables); Ok(()) } fn pre(&self, s: &mut pprust_hir::State<'_>, node: pprust_hir::AnnNode<'_>) -> io::Result<()> { match node { pprust_hir::AnnNode::Expr(_) => s.popen(), _ => Ok(()), } } fn post(&self, s: &mut pprust_hir::State<'_>, node: pprust_hir::AnnNode<'_>) -> io::Result<()> { match node { pprust_hir::AnnNode::Expr(expr) => { s.s.space()?; s.s.word("as")?; s.s.space()?; s.s.word(self.tables.get().expr_ty(expr).to_string())?; s.pclose() } _ => Ok(()), } } } fn gather_flowgraph_variants(sess: &Session) -> Vec { let print_loans = sess.opts.debugging_opts.flowgraph_print_loans; let print_moves = sess.opts.debugging_opts.flowgraph_print_moves; let print_assigns = sess.opts.debugging_opts.flowgraph_print_assigns; let print_all = sess.opts.debugging_opts.flowgraph_print_all; let mut variants = Vec::new(); if print_all || print_loans { variants.push(borrowck_dot::Loans); } if print_all || print_moves { variants.push(borrowck_dot::Moves); } if print_all || print_assigns { variants.push(borrowck_dot::Assigns); } variants } #[derive(Clone, Debug)] pub enum UserIdentifiedItem { ItemViaNode(ast::NodeId), ItemViaPath(Vec), } impl FromStr for UserIdentifiedItem { type Err = (); fn from_str(s: &str) -> Result { Ok(s.parse() .map(ast::NodeId::from_u32) .map(ItemViaNode) .unwrap_or_else(|_| ItemViaPath(s.split("::").map(|s| s.to_string()).collect()))) } } enum NodesMatchingUII<'a> { NodesMatchingDirect(option::IntoIter), NodesMatchingSuffix(Box + 'a>), } impl<'a> Iterator for NodesMatchingUII<'a> { type Item = ast::NodeId; fn next(&mut self) -> Option { match self { &mut NodesMatchingDirect(ref mut iter) => iter.next(), &mut NodesMatchingSuffix(ref mut iter) => iter.next(), } } fn size_hint(&self) -> (usize, Option) { match self { &NodesMatchingDirect(ref iter) => iter.size_hint(), &NodesMatchingSuffix(ref iter) => iter.size_hint(), } } } impl UserIdentifiedItem { fn reconstructed_input(&self) -> String { match *self { ItemViaNode(node_id) => node_id.to_string(), ItemViaPath(ref parts) => parts.join("::"), } } fn all_matching_node_ids<'a, 'hir>(&'a self, map: &'a hir_map::Map<'hir>) -> NodesMatchingUII<'a> { match *self { ItemViaNode(node_id) => NodesMatchingDirect(Some(node_id).into_iter()), ItemViaPath(ref parts) => { NodesMatchingSuffix(Box::new(map.nodes_matching_suffix(&parts))) } } } fn to_one_node_id(self, user_option: &str, sess: &Session, map: &hir_map::Map<'_>) -> ast::NodeId { let fail_because = |is_wrong_because| -> ast::NodeId { let message = format!("{} needs NodeId (int) or unique path suffix (b::c::d); got \ {}, which {}", user_option, self.reconstructed_input(), is_wrong_because); sess.fatal(&message) }; let mut saw_node = ast::DUMMY_NODE_ID; let mut seen = 0; for node in self.all_matching_node_ids(map) { saw_node = node; seen += 1; if seen > 1 { fail_because("does not resolve uniquely"); } } if seen == 0 { fail_because("does not resolve to any item"); } assert!(seen == 1); return saw_node; } } fn print_flowgraph<'tcx, W: Write>( variants: Vec, tcx: TyCtxt<'tcx>, code: blocks::Code<'tcx>, mode: PpFlowGraphMode, mut out: W, ) -> io::Result<()> { let body_id = match code { blocks::Code::Expr(expr) => { // Find the function this expression is from. let mut hir_id = expr.hir_id; loop { let node = tcx.hir().get_by_hir_id(hir_id); if let Some(n) = hir::map::blocks::FnLikeNode::from_node(node) { break n.body(); } let parent = tcx.hir().get_parent_node_by_hir_id(hir_id); assert_ne!(hir_id, parent); hir_id = parent; } } blocks::Code::FnLike(fn_like) => fn_like.body(), }; let body = tcx.hir().body(body_id); let cfg = cfg::CFG::new(tcx, &body); let labelled_edges = mode != PpFlowGraphMode::UnlabelledEdges; let hir_id = code.id(); // We have to disassemble the hir_id because name must be ASCII // alphanumeric. This does not appear in the rendered graph, so it does not // have to be user friendly. let name = format!( "hir_id_{}_{}", hir_id.owner.index(), hir_id.local_id.index(), ); let lcfg = LabelledCFG { tcx, cfg: &cfg, name, labelled_edges, }; match code { _ if variants.is_empty() => { let r = dot::render(&lcfg, &mut out); return expand_err_details(r); } blocks::Code::Expr(_) => { tcx.sess.err("--pretty flowgraph with -Z flowgraph-print annotations requires \ fn-like node id."); return Ok(()); } blocks::Code::FnLike(fn_like) => { let (bccx, analysis_data) = borrowck::build_borrowck_dataflow_data_for_fn(tcx, fn_like.body(), &cfg); let lcfg = borrowck_dot::DataflowLabeller { inner: lcfg, variants, borrowck_ctxt: &bccx, analysis_data: &analysis_data, }; let r = dot::render(&lcfg, &mut out); return expand_err_details(r); } } fn expand_err_details(r: io::Result<()>) -> io::Result<()> { r.map_err(|ioerr| { io::Error::new(io::ErrorKind::Other, format!("graphviz::render failed: {}", ioerr)) }) } } pub fn visit_crate(sess: &Session, krate: &mut ast::Crate, ppm: PpMode) { if let PpmSource(PpmEveryBodyLoops) = ppm { ReplaceBodyWithLoop::new(sess).visit_crate(krate); } } fn get_source(input: &Input, sess: &Session) -> (Vec, FileName) { let src_name = source_name(input); let src = sess.source_map() .get_source_file(&src_name) .unwrap() .src .as_ref() .unwrap() .as_bytes() .to_vec(); (src, src_name) } fn write_output(out: Vec, ofile: Option<&Path>) { match ofile { None => print!("{}", String::from_utf8(out).unwrap()), Some(p) => { match File::create(p) { Ok(mut w) => w.write_all(&out).unwrap(), Err(e) => panic!("print-print failed to open {} due to {}", p.display(), e), } } } } pub fn print_after_parsing(sess: &Session, input: &Input, krate: &ast::Crate, ppm: PpMode, ofile: Option<&Path>) { let (src, src_name) = get_source(input, sess); let mut rdr = &*src; let mut out = Vec::new(); if let PpmSource(s) = ppm { // Silently ignores an identified node. let out: &mut dyn Write = &mut out; s.call_with_pp_support(sess, None, move |annotation| { debug!("pretty printing source code {:?}", s); let sess = annotation.sess(); pprust::print_crate(sess.source_map(), &sess.parse_sess, krate, src_name, &mut rdr, box out, annotation.pp_ann(), false) }).unwrap() } else { unreachable!(); }; write_output(out, ofile); } pub fn print_after_hir_lowering<'tcx>( tcx: TyCtxt<'tcx>, input: &Input, krate: &ast::Crate, ppm: PpMode, opt_uii: Option, ofile: Option<&Path>, ) { if ppm.needs_analysis() { abort_on_err(print_with_analysis( tcx, ppm, opt_uii, ofile ), tcx.sess); return; } let (src, src_name) = get_source(input, tcx.sess); let mut rdr = &src[..]; let mut out = Vec::new(); match (ppm, opt_uii) { (PpmSource(s), _) => { // Silently ignores an identified node. let out: &mut dyn Write = &mut out; s.call_with_pp_support(tcx.sess, Some(tcx), move |annotation| { debug!("pretty printing source code {:?}", s); let sess = annotation.sess(); pprust::print_crate(sess.source_map(), &sess.parse_sess, krate, src_name, &mut rdr, box out, annotation.pp_ann(), true) }) } (PpmHir(s), None) => { let out: &mut dyn Write = &mut out; s.call_with_pp_support_hir(tcx, move |annotation, krate| { debug!("pretty printing source code {:?}", s); let sess = annotation.sess(); pprust_hir::print_crate(sess.source_map(), &sess.parse_sess, krate, src_name, &mut rdr, box out, annotation.pp_ann()) }) } (PpmHirTree(s), None) => { let out: &mut dyn Write = &mut out; s.call_with_pp_support_hir(tcx, move |_annotation, krate| { debug!("pretty printing source code {:?}", s); write!(out, "{:#?}", krate) }) } (PpmHir(s), Some(uii)) => { let out: &mut dyn Write = &mut out; s.call_with_pp_support_hir(tcx, move |annotation, _| { debug!("pretty printing source code {:?}", s); let sess = annotation.sess(); let hir_map = annotation.hir_map().expect("-Z unpretty missing HIR map"); let mut pp_state = pprust_hir::State::new_from_input(sess.source_map(), &sess.parse_sess, src_name, &mut rdr, box out, annotation.pp_ann()); for node_id in uii.all_matching_node_ids(hir_map) { let node = hir_map.get(node_id); pp_state.print_node(node)?; pp_state.s.space()?; let path = annotation.node_path(node_id) .expect("-Z unpretty missing node paths"); pp_state.synth_comment(path)?; pp_state.s.hardbreak()?; } pp_state.s.eof() }) } (PpmHirTree(s), Some(uii)) => { let out: &mut dyn Write = &mut out; s.call_with_pp_support_hir(tcx, move |_annotation, _krate| { debug!("pretty printing source code {:?}", s); for node_id in uii.all_matching_node_ids(tcx.hir()) { let node = tcx.hir().get(node_id); write!(out, "{:#?}", node)?; } Ok(()) }) } _ => unreachable!(), } .unwrap(); write_output(out, ofile); } // In an ideal world, this would be a public function called by the driver after // analysis is performed. However, we want to call `phase_3_run_analysis_passes` // with a different callback than the standard driver, so that isn't easy. // Instead, we call that function ourselves. fn print_with_analysis<'tcx>( tcx: TyCtxt<'tcx>, ppm: PpMode, uii: Option, ofile: Option<&Path>, ) -> Result<(), ErrorReported> { let nodeid = if let Some(uii) = uii { debug!("pretty printing for {:?}", uii); Some(uii.to_one_node_id("-Z unpretty", tcx.sess, tcx.hir())) } else { debug!("pretty printing for whole crate"); None }; let mut out = Vec::new(); tcx.analysis(LOCAL_CRATE)?; let mut print = || match ppm { PpmMir | PpmMirCFG => { if let Some(nodeid) = nodeid { let def_id = tcx.hir().local_def_id(nodeid); match ppm { PpmMir => write_mir_pretty(tcx, Some(def_id), &mut out), PpmMirCFG => write_mir_graphviz(tcx, Some(def_id), &mut out), _ => unreachable!(), }?; } else { match ppm { PpmMir => write_mir_pretty(tcx, None, &mut out), PpmMirCFG => write_mir_graphviz(tcx, None, &mut out), _ => unreachable!(), }?; } Ok(()) } PpmFlowGraph(mode) => { let nodeid = nodeid.expect("`pretty flowgraph=..` needs NodeId (int) or unique path \ suffix (b::c::d)"); let node = tcx.hir().find(nodeid).unwrap_or_else(|| { tcx.sess.fatal(&format!("--pretty flowgraph couldn't find id: {}", nodeid)) }); let hir_id = tcx.hir().node_to_hir_id(nodeid); match blocks::Code::from_node(&tcx.hir(), hir_id) { Some(code) => { let variants = gather_flowgraph_variants(tcx.sess); let out: &mut dyn Write = &mut out; print_flowgraph(variants, tcx, code, mode, out) } None => { let message = format!("--pretty=flowgraph needs block, fn, or method; \ got {:?}", node); let hir_id = tcx.hir().node_to_hir_id(nodeid); tcx.sess.span_fatal(tcx.hir().span(hir_id), &message) } } } _ => unreachable!(), }; print().unwrap(); write_output(out, ofile); Ok(()) }