| // Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| //! The various pretty print routines. |
| |
| pub use self::UserIdentifiedItem::*; |
| pub use self::PpSourceMode::*; |
| pub use self::PpMode::*; |
| use self::NodesMatchingUII::*; |
| |
| use abort_on_err; |
| use driver::{self, Resolutions}; |
| |
| use rustc::ty::{self, TyCtxt}; |
| use rustc::cfg; |
| use rustc::cfg::graphviz::LabelledCFG; |
| use rustc::dep_graph::DepGraph; |
| use rustc::session::Session; |
| use rustc::session::config::Input; |
| use rustc_borrowck as borrowck; |
| use rustc_borrowck::graphviz as borrowck_dot; |
| |
| use rustc_mir::pretty::write_mir_pretty; |
| use rustc_mir::graphviz::write_mir_graphviz; |
| |
| use syntax::ast::{self, BlockCheckMode}; |
| use syntax::fold::{self, Folder}; |
| use syntax::print::{pp, pprust}; |
| use syntax::print::pprust::PrintState; |
| use syntax::ptr::P; |
| use syntax::util::small_vector::SmallVector; |
| use syntax_pos; |
| |
| use graphviz as dot; |
| |
| use std::fs::File; |
| use std::io::{self, Write}; |
| use std::iter; |
| use std::option; |
| use std::path::Path; |
| use std::str::FromStr; |
| |
| use rustc::hir::map as hir_map; |
| use rustc::hir::map::{blocks, NodePrinter}; |
| use rustc::hir; |
| use rustc::hir::print as pprust_hir; |
| |
| use rustc::mir::mir_map::MirMap; |
| |
| #[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 --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), |
| PpmFlowGraph(PpFlowGraphMode), |
| PpmMir, |
| PpmMirCFG, |
| } |
| |
| impl PpMode { |
| pub fn needs_ast_map(&self, opt_uii: &Option<UserIdentifiedItem>) -> bool { |
| match *self { |
| PpmSource(PpmNormal) | |
| PpmSource(PpmEveryBodyLoops) | |
| PpmSource(PpmIdentified) => opt_uii.is_some(), |
| |
| PpmSource(PpmExpanded) | |
| PpmSource(PpmExpandedIdentified) | |
| PpmSource(PpmExpandedHygiene) | |
| PpmHir(_) | |
| 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<UserIdentifiedItem>) { |
| 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), |
| ("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]=<nodeid>`, \ |
| `identified`, `expanded,identified`, `everybody_loops`, \ |
| `hir`, `hir,identified`, `hir,typed`, or `mir`; 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::<UserIdentifiedItem>().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, B, F>(&self, |
| sess: &'tcx Session, |
| ast_map: Option<&hir_map::Map<'tcx>>, |
| payload: B, |
| f: F) |
| -> A |
| where F: FnOnce(&PrinterSupport, B) -> A |
| { |
| match *self { |
| PpmNormal | PpmEveryBodyLoops | PpmExpanded => { |
| let annotation = NoAnn { |
| sess: sess, |
| ast_map: ast_map.map(|m| m.clone()), |
| }; |
| f(&annotation, payload) |
| } |
| |
| PpmIdentified | PpmExpandedIdentified => { |
| let annotation = IdentifiedAnnotation { |
| sess: sess, |
| ast_map: ast_map.map(|m| m.clone()), |
| }; |
| f(&annotation, payload) |
| } |
| PpmExpandedHygiene => { |
| let annotation = HygieneAnnotation { |
| sess: sess, |
| ast_map: ast_map.map(|m| m.clone()), |
| }; |
| f(&annotation, payload) |
| } |
| _ => panic!("Should use call_with_pp_support_hir"), |
| } |
| } |
| fn call_with_pp_support_hir<'tcx, A, B, F>(&self, |
| sess: &'tcx Session, |
| ast_map: &hir_map::Map<'tcx>, |
| analysis: &ty::CrateAnalysis, |
| resolutions: &Resolutions, |
| arenas: &'tcx ty::CtxtArenas<'tcx>, |
| id: &str, |
| payload: B, |
| f: F) |
| -> A |
| where F: FnOnce(&HirPrinterSupport, B, &hir::Crate) -> A |
| { |
| match *self { |
| PpmNormal => { |
| let annotation = NoAnn { |
| sess: sess, |
| ast_map: Some(ast_map.clone()), |
| }; |
| f(&annotation, payload, ast_map.forest.krate()) |
| } |
| |
| PpmIdentified => { |
| let annotation = IdentifiedAnnotation { |
| sess: sess, |
| ast_map: Some(ast_map.clone()), |
| }; |
| f(&annotation, payload, ast_map.forest.krate()) |
| } |
| PpmTyped => { |
| abort_on_err(driver::phase_3_run_analysis_passes(sess, |
| ast_map.clone(), |
| analysis.clone(), |
| resolutions.clone(), |
| arenas, |
| id, |
| |tcx, _, _, _| { |
| let annotation = TypedAnnotation { |
| tcx: tcx, |
| }; |
| let _ignore = tcx.dep_graph.in_ignore(); |
| f(&annotation, |
| payload, |
| ast_map.forest.krate()) |
| }), sess) |
| } |
| _ => panic!("Should use call_with_pp_support"), |
| } |
| } |
| } |
| |
| trait PrinterSupport<'ast>: 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; |
| |
| /// Provides a uniform interface for re-extracting a reference to an |
| /// `hir_map::Map` from a value that now owns it. |
| fn ast_map<'a>(&'a self) -> Option<&'a hir_map::Map<'ast>>; |
| |
| /// 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 pprust::PpAnn; |
| } |
| |
| trait HirPrinterSupport<'ast>: 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 ast_map<'a>(&'a self) -> Option<&'a hir_map::Map<'ast>>; |
| |
| /// 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 pprust_hir::PpAnn; |
| |
| /// Computes an user-readable representation of a path, if possible. |
| fn node_path(&self, id: ast::NodeId) -> Option<String> { |
| self.ast_map().and_then(|map| map.def_path_from_id(id)).map(|path| { |
| path.data.into_iter().map(|elem| { |
| elem.data.to_string() |
| }).collect::<Vec<_>>().join("::") |
| }) |
| } |
| } |
| |
| struct NoAnn<'ast> { |
| sess: &'ast Session, |
| ast_map: Option<hir_map::Map<'ast>>, |
| } |
| |
| impl<'ast> PrinterSupport<'ast> for NoAnn<'ast> { |
| fn sess<'a>(&'a self) -> &'a Session { |
| self.sess |
| } |
| |
| fn ast_map<'a>(&'a self) -> Option<&'a hir_map::Map<'ast>> { |
| self.ast_map.as_ref() |
| } |
| |
| fn pp_ann<'a>(&'a self) -> &'a pprust::PpAnn { |
| self |
| } |
| } |
| |
| impl<'ast> HirPrinterSupport<'ast> for NoAnn<'ast> { |
| fn sess<'a>(&'a self) -> &'a Session { |
| self.sess |
| } |
| |
| fn ast_map<'a>(&'a self) -> Option<&'a hir_map::Map<'ast>> { |
| self.ast_map.as_ref() |
| } |
| |
| fn pp_ann<'a>(&'a self) -> &'a pprust_hir::PpAnn { |
| self |
| } |
| } |
| |
| impl<'ast> pprust::PpAnn for NoAnn<'ast> {} |
| impl<'ast> pprust_hir::PpAnn for NoAnn<'ast> {} |
| |
| struct IdentifiedAnnotation<'ast> { |
| sess: &'ast Session, |
| ast_map: Option<hir_map::Map<'ast>>, |
| } |
| |
| impl<'ast> PrinterSupport<'ast> for IdentifiedAnnotation<'ast> { |
| fn sess<'a>(&'a self) -> &'a Session { |
| self.sess |
| } |
| |
| fn ast_map<'a>(&'a self) -> Option<&'a hir_map::Map<'ast>> { |
| self.ast_map.as_ref() |
| } |
| |
| fn pp_ann<'a>(&'a self) -> &'a pprust::PpAnn { |
| self |
| } |
| } |
| |
| impl<'ast> pprust::PpAnn for IdentifiedAnnotation<'ast> { |
| fn pre(&self, s: &mut pprust::State, node: pprust::AnnNode) -> io::Result<()> { |
| match node { |
| pprust::NodeExpr(_) => s.popen(), |
| _ => Ok(()), |
| } |
| } |
| fn post(&self, s: &mut pprust::State, node: pprust::AnnNode) -> io::Result<()> { |
| match node { |
| pprust::NodeIdent(_) | pprust::NodeName(_) => Ok(()), |
| |
| pprust::NodeItem(item) => { |
| pp::space(&mut s.s)?; |
| s.synth_comment(item.id.to_string()) |
| } |
| pprust::NodeSubItem(id) => { |
| pp::space(&mut s.s)?; |
| s.synth_comment(id.to_string()) |
| } |
| pprust::NodeBlock(blk) => { |
| pp::space(&mut s.s)?; |
| s.synth_comment(format!("block {}", blk.id)) |
| } |
| pprust::NodeExpr(expr) => { |
| pp::space(&mut s.s)?; |
| s.synth_comment(expr.id.to_string())?; |
| s.pclose() |
| } |
| pprust::NodePat(pat) => { |
| pp::space(&mut s.s)?; |
| s.synth_comment(format!("pat {}", pat.id)) |
| } |
| } |
| } |
| } |
| |
| impl<'ast> HirPrinterSupport<'ast> for IdentifiedAnnotation<'ast> { |
| fn sess<'a>(&'a self) -> &'a Session { |
| self.sess |
| } |
| |
| fn ast_map<'a>(&'a self) -> Option<&'a hir_map::Map<'ast>> { |
| self.ast_map.as_ref() |
| } |
| |
| fn pp_ann<'a>(&'a self) -> &'a pprust_hir::PpAnn { |
| self |
| } |
| } |
| |
| impl<'ast> pprust_hir::PpAnn for IdentifiedAnnotation<'ast> { |
| fn pre(&self, s: &mut pprust_hir::State, node: pprust_hir::AnnNode) -> io::Result<()> { |
| match node { |
| pprust_hir::NodeExpr(_) => s.popen(), |
| _ => Ok(()), |
| } |
| } |
| fn post(&self, s: &mut pprust_hir::State, node: pprust_hir::AnnNode) -> io::Result<()> { |
| match node { |
| pprust_hir::NodeName(_) => Ok(()), |
| pprust_hir::NodeItem(item) => { |
| pp::space(&mut s.s)?; |
| s.synth_comment(item.id.to_string()) |
| } |
| pprust_hir::NodeSubItem(id) => { |
| pp::space(&mut s.s)?; |
| s.synth_comment(id.to_string()) |
| } |
| pprust_hir::NodeBlock(blk) => { |
| pp::space(&mut s.s)?; |
| s.synth_comment(format!("block {}", blk.id)) |
| } |
| pprust_hir::NodeExpr(expr) => { |
| pp::space(&mut s.s)?; |
| s.synth_comment(expr.id.to_string())?; |
| s.pclose() |
| } |
| pprust_hir::NodePat(pat) => { |
| pp::space(&mut s.s)?; |
| s.synth_comment(format!("pat {}", pat.id)) |
| } |
| } |
| } |
| } |
| |
| struct HygieneAnnotation<'ast> { |
| sess: &'ast Session, |
| ast_map: Option<hir_map::Map<'ast>>, |
| } |
| |
| impl<'ast> PrinterSupport<'ast> for HygieneAnnotation<'ast> { |
| fn sess<'a>(&'a self) -> &'a Session { |
| self.sess |
| } |
| |
| fn ast_map<'a>(&'a self) -> Option<&'a hir_map::Map<'ast>> { |
| self.ast_map.as_ref() |
| } |
| |
| fn pp_ann<'a>(&'a self) -> &'a pprust::PpAnn { |
| self |
| } |
| } |
| |
| impl<'ast> pprust::PpAnn for HygieneAnnotation<'ast> { |
| fn post(&self, s: &mut pprust::State, node: pprust::AnnNode) -> io::Result<()> { |
| match node { |
| pprust::NodeIdent(&ast::Ident { name: ast::Name(nm), ctxt }) => { |
| pp::space(&mut s.s)?; |
| // FIXME #16420: this doesn't display the connections |
| // between syntax contexts |
| s.synth_comment(format!("{}{:?}", nm, ctxt)) |
| } |
| pprust::NodeName(&ast::Name(nm)) => { |
| pp::space(&mut s.s)?; |
| s.synth_comment(nm.to_string()) |
| } |
| _ => Ok(()), |
| } |
| } |
| } |
| |
| |
| struct TypedAnnotation<'a, 'tcx: 'a> { |
| tcx: TyCtxt<'a, 'tcx, 'tcx>, |
| } |
| |
| impl<'b, 'tcx> HirPrinterSupport<'tcx> for TypedAnnotation<'b, 'tcx> { |
| fn sess<'a>(&'a self) -> &'a Session { |
| &self.tcx.sess |
| } |
| |
| fn ast_map<'a>(&'a self) -> Option<&'a hir_map::Map<'tcx>> { |
| Some(&self.tcx.map) |
| } |
| |
| fn pp_ann<'a>(&'a self) -> &'a pprust_hir::PpAnn { |
| self |
| } |
| |
| fn node_path(&self, id: ast::NodeId) -> Option<String> { |
| Some(self.tcx.node_path_str(id)) |
| } |
| } |
| |
| impl<'a, 'tcx> pprust_hir::PpAnn for TypedAnnotation<'a, 'tcx> { |
| fn pre(&self, s: &mut pprust_hir::State, node: pprust_hir::AnnNode) -> io::Result<()> { |
| match node { |
| pprust_hir::NodeExpr(_) => s.popen(), |
| _ => Ok(()), |
| } |
| } |
| fn post(&self, s: &mut pprust_hir::State, node: pprust_hir::AnnNode) -> io::Result<()> { |
| match node { |
| pprust_hir::NodeExpr(expr) => { |
| pp::space(&mut s.s)?; |
| pp::word(&mut s.s, "as")?; |
| pp::space(&mut s.s)?; |
| pp::word(&mut s.s, &self.tcx.expr_ty(expr).to_string())?; |
| s.pclose() |
| } |
| _ => Ok(()), |
| } |
| } |
| } |
| |
| fn gather_flowgraph_variants(sess: &Session) -> Vec<borrowck_dot::Variant> { |
| 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<String>), |
| } |
| |
| impl FromStr for UserIdentifiedItem { |
| type Err = (); |
| fn from_str(s: &str) -> Result<UserIdentifiedItem, ()> { |
| Ok(s.parse() |
| .map(ItemViaNode) |
| .unwrap_or_else(|_| ItemViaPath(s.split("::").map(|s| s.to_string()).collect()))) |
| } |
| } |
| |
| enum NodesMatchingUII<'a, 'ast: 'a> { |
| NodesMatchingDirect(option::IntoIter<ast::NodeId>), |
| NodesMatchingSuffix(hir_map::NodesMatchingSuffix<'a, 'ast>), |
| } |
| |
| impl<'a, 'ast> Iterator for NodesMatchingUII<'a, 'ast> { |
| type Item = ast::NodeId; |
| |
| fn next(&mut self) -> Option<ast::NodeId> { |
| match self { |
| &mut NodesMatchingDirect(ref mut iter) => iter.next(), |
| &mut NodesMatchingSuffix(ref mut iter) => iter.next(), |
| } |
| } |
| } |
| |
| 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, 'ast>(&'a self, |
| map: &'a hir_map::Map<'ast>) |
| -> NodesMatchingUII<'a, 'ast> { |
| match *self { |
| ItemViaNode(node_id) => NodesMatchingDirect(Some(node_id).into_iter()), |
| ItemViaPath(ref parts) => NodesMatchingSuffix(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; |
| } |
| } |
| |
| struct ReplaceBodyWithLoop { |
| within_static_or_const: bool, |
| } |
| |
| impl ReplaceBodyWithLoop { |
| fn new() -> ReplaceBodyWithLoop { |
| ReplaceBodyWithLoop { within_static_or_const: false } |
| } |
| } |
| |
| impl fold::Folder for ReplaceBodyWithLoop { |
| fn fold_item_kind(&mut self, i: ast::ItemKind) -> ast::ItemKind { |
| match i { |
| ast::ItemKind::Static(..) | ast::ItemKind::Const(..) => { |
| self.within_static_or_const = true; |
| let ret = fold::noop_fold_item_kind(i, self); |
| self.within_static_or_const = false; |
| return ret; |
| } |
| _ => { |
| fold::noop_fold_item_kind(i, self) |
| } |
| } |
| } |
| |
| fn fold_trait_item(&mut self, i: ast::TraitItem) -> SmallVector<ast::TraitItem> { |
| match i.node { |
| ast::TraitItemKind::Const(..) => { |
| self.within_static_or_const = true; |
| let ret = fold::noop_fold_trait_item(i, self); |
| self.within_static_or_const = false; |
| return ret; |
| } |
| _ => fold::noop_fold_trait_item(i, self), |
| } |
| } |
| |
| fn fold_impl_item(&mut self, i: ast::ImplItem) -> SmallVector<ast::ImplItem> { |
| match i.node { |
| ast::ImplItemKind::Const(..) => { |
| self.within_static_or_const = true; |
| let ret = fold::noop_fold_impl_item(i, self); |
| self.within_static_or_const = false; |
| return ret; |
| } |
| _ => fold::noop_fold_impl_item(i, self), |
| } |
| } |
| |
| fn fold_block(&mut self, b: P<ast::Block>) -> P<ast::Block> { |
| fn expr_to_block(rules: ast::BlockCheckMode, e: Option<P<ast::Expr>>) -> P<ast::Block> { |
| P(ast::Block { |
| stmts: e.map(|e| ast::Stmt { |
| id: ast::DUMMY_NODE_ID, |
| span: e.span, |
| node: ast::StmtKind::Expr(e), |
| }).into_iter().collect(), |
| rules: rules, |
| id: ast::DUMMY_NODE_ID, |
| span: syntax_pos::DUMMY_SP, |
| }) |
| } |
| |
| if !self.within_static_or_const { |
| |
| let empty_block = expr_to_block(BlockCheckMode::Default, None); |
| let loop_expr = P(ast::Expr { |
| node: ast::ExprKind::Loop(empty_block, None), |
| id: ast::DUMMY_NODE_ID, |
| span: syntax_pos::DUMMY_SP, |
| attrs: ast::ThinVec::new(), |
| }); |
| |
| expr_to_block(b.rules, Some(loop_expr)) |
| |
| } else { |
| fold::noop_fold_block(b, self) |
| } |
| } |
| |
| // in general the pretty printer processes unexpanded code, so |
| // we override the default `fold_mac` method which panics. |
| fn fold_mac(&mut self, mac: ast::Mac) -> ast::Mac { |
| fold::noop_fold_mac(mac, self) |
| } |
| } |
| |
| fn print_flowgraph<'a, 'tcx, W: Write>(variants: Vec<borrowck_dot::Variant>, |
| tcx: TyCtxt<'a, 'tcx, 'tcx>, |
| mir_map: Option<&MirMap<'tcx>>, |
| code: blocks::Code, |
| mode: PpFlowGraphMode, |
| mut out: W) |
| -> io::Result<()> { |
| let cfg = match code { |
| blocks::BlockCode(block) => cfg::CFG::new(tcx, &block), |
| blocks::FnLikeCode(fn_like) => cfg::CFG::new(tcx, &fn_like.body()), |
| }; |
| let labelled_edges = mode != PpFlowGraphMode::UnlabelledEdges; |
| let lcfg = LabelledCFG { |
| ast_map: &tcx.map, |
| cfg: &cfg, |
| name: format!("node_{}", code.id()), |
| labelled_edges: labelled_edges, |
| }; |
| |
| match code { |
| _ if variants.is_empty() => { |
| let r = dot::render(&lcfg, &mut out); |
| return expand_err_details(r); |
| } |
| blocks::BlockCode(_) => { |
| tcx.sess.err("--pretty flowgraph with -Z flowgraph-print annotations requires \ |
| fn-like node id."); |
| return Ok(()); |
| } |
| blocks::FnLikeCode(fn_like) => { |
| let (bccx, analysis_data) = |
| borrowck::build_borrowck_dataflow_data_for_fn(tcx, |
| mir_map, |
| fn_like.to_fn_parts(), |
| &cfg); |
| |
| let lcfg = borrowck_dot::DataflowLabeller { |
| inner: lcfg, |
| variants: 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 fold_crate(krate: ast::Crate, ppm: PpMode) -> ast::Crate { |
| if let PpmSource(PpmEveryBodyLoops) = ppm { |
| let mut fold = ReplaceBodyWithLoop::new(); |
| fold.fold_crate(krate) |
| } else { |
| krate |
| } |
| } |
| |
| fn get_source(input: &Input, sess: &Session) -> (Vec<u8>, String) { |
| let src_name = driver::source_name(input); |
| let src = sess.codemap() |
| .get_filemap(&src_name) |
| .unwrap() |
| .src |
| .as_ref() |
| .unwrap() |
| .as_bytes() |
| .to_vec(); |
| (src, src_name) |
| } |
| |
| fn write_output(out: Vec<u8>, 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 dep_graph = DepGraph::new(false); |
| let _ignore = dep_graph.in_ignore(); |
| |
| 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 Write = &mut out; |
| s.call_with_pp_support(sess, None, box out, |annotation, out| { |
| debug!("pretty printing source code {:?}", s); |
| let sess = annotation.sess(); |
| pprust::print_crate(sess.codemap(), |
| sess.diagnostic(), |
| krate, |
| src_name.to_string(), |
| &mut rdr, |
| out, |
| annotation.pp_ann(), |
| false) |
| }).unwrap() |
| } else { |
| unreachable!(); |
| }; |
| |
| write_output(out, ofile); |
| } |
| |
| pub fn print_after_hir_lowering<'tcx, 'a: 'tcx>(sess: &'a Session, |
| ast_map: &hir_map::Map<'tcx>, |
| analysis: &ty::CrateAnalysis, |
| resolutions: &Resolutions, |
| input: &Input, |
| krate: &ast::Crate, |
| crate_name: &str, |
| ppm: PpMode, |
| arenas: &'tcx ty::CtxtArenas<'tcx>, |
| opt_uii: Option<UserIdentifiedItem>, |
| ofile: Option<&Path>) { |
| let dep_graph = DepGraph::new(false); |
| let _ignore = dep_graph.in_ignore(); |
| |
| if ppm.needs_analysis() { |
| print_with_analysis(sess, ast_map, analysis, resolutions, |
| crate_name, arenas, ppm, opt_uii, ofile); |
| return; |
| } |
| |
| let (src, src_name) = get_source(input, sess); |
| |
| let mut rdr = &src[..]; |
| let mut out = Vec::new(); |
| |
| match (ppm, opt_uii) { |
| (PpmSource(s), _) => { |
| // Silently ignores an identified node. |
| let out: &mut Write = &mut out; |
| s.call_with_pp_support(sess, Some(ast_map), box out, |annotation, out| { |
| debug!("pretty printing source code {:?}", s); |
| let sess = annotation.sess(); |
| pprust::print_crate(sess.codemap(), |
| sess.diagnostic(), |
| krate, |
| src_name.to_string(), |
| &mut rdr, |
| out, |
| annotation.pp_ann(), |
| true) |
| }) |
| } |
| |
| (PpmHir(s), None) => { |
| let out: &mut Write = &mut out; |
| s.call_with_pp_support_hir(sess, |
| ast_map, |
| analysis, |
| resolutions, |
| arenas, |
| crate_name, |
| box out, |
| |annotation, out, krate| { |
| debug!("pretty printing source code {:?}", s); |
| let sess = annotation.sess(); |
| pprust_hir::print_crate(sess.codemap(), |
| sess.diagnostic(), |
| krate, |
| src_name.to_string(), |
| &mut rdr, |
| out, |
| annotation.pp_ann(), |
| true) |
| }) |
| } |
| |
| (PpmHir(s), Some(uii)) => { |
| let out: &mut Write = &mut out; |
| s.call_with_pp_support_hir(sess, |
| ast_map, |
| analysis, |
| resolutions, |
| arenas, |
| crate_name, |
| (out,uii), |
| |annotation, (out,uii), _| { |
| debug!("pretty printing source code {:?}", s); |
| let sess = annotation.sess(); |
| let ast_map = annotation.ast_map().expect("--unpretty missing HIR map"); |
| let mut pp_state = |
| pprust_hir::State::new_from_input(sess.codemap(), |
| sess.diagnostic(), |
| src_name.to_string(), |
| &mut rdr, |
| box out, |
| annotation.pp_ann(), |
| true, |
| Some(ast_map.krate())); |
| for node_id in uii.all_matching_node_ids(ast_map) { |
| let node = ast_map.get(node_id); |
| pp_state.print_node(&node)?; |
| pp::space(&mut pp_state.s)?; |
| let path = annotation.node_path(node_id) |
| .expect("--unpretty missing node paths"); |
| pp_state.synth_comment(path)?; |
| pp::hardbreak(&mut pp_state.s)?; |
| } |
| pp::eof(&mut pp_state.s) |
| }) |
| } |
| _ => unreachable!(), |
| }.unwrap(); |
| |
| write_output(out, ofile); |
| } |
| |
| // In an ideal world, this would be a public function called by the driver after |
| // analsysis 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, 'a: 'tcx>(sess: &'a Session, |
| ast_map: &hir_map::Map<'tcx>, |
| analysis: &ty::CrateAnalysis, |
| resolutions: &Resolutions, |
| crate_name: &str, |
| arenas: &'tcx ty::CtxtArenas<'tcx>, |
| ppm: PpMode, |
| uii: Option<UserIdentifiedItem>, |
| ofile: Option<&Path>) { |
| let nodeid = if let Some(uii) = uii { |
| debug!("pretty printing for {:?}", uii); |
| Some(uii.to_one_node_id("--unpretty", sess, &ast_map)) |
| } else { |
| debug!("pretty printing for whole crate"); |
| None |
| }; |
| |
| let mut out = Vec::new(); |
| |
| abort_on_err(driver::phase_3_run_analysis_passes(sess, |
| ast_map.clone(), |
| analysis.clone(), |
| resolutions.clone(), |
| arenas, |
| crate_name, |
| |tcx, mir_map, _, _| { |
| match ppm { |
| PpmMir | PpmMirCFG => { |
| if let Some(mir_map) = mir_map { |
| if let Some(nodeid) = nodeid { |
| let mir = mir_map.map.get(&nodeid).unwrap_or_else(|| { |
| sess.fatal(&format!("no MIR map entry for node {}", nodeid)) |
| }); |
| match ppm { |
| PpmMir => write_mir_pretty(tcx, iter::once((&nodeid, mir)), &mut out), |
| PpmMirCFG => { |
| write_mir_graphviz(tcx, iter::once((&nodeid, mir)), &mut out) |
| } |
| _ => unreachable!(), |
| }?; |
| } else { |
| match ppm { |
| PpmMir => write_mir_pretty(tcx, mir_map.map.iter(), &mut out), |
| PpmMirCFG => write_mir_graphviz(tcx, mir_map.map.iter(), &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.map.find(nodeid).unwrap_or_else(|| { |
| tcx.sess.fatal(&format!("--pretty flowgraph couldn't find id: {}", nodeid)) |
| }); |
| |
| let code = blocks::Code::from_node(node); |
| match code { |
| Some(code) => { |
| let variants = gather_flowgraph_variants(tcx.sess); |
| |
| let out: &mut Write = &mut out; |
| |
| print_flowgraph(variants, |
| tcx, |
| mir_map.as_ref(), |
| code, |
| mode, |
| out) |
| } |
| None => { |
| let message = format!("--pretty=flowgraph needs block, fn, or method; got \ |
| {:?}", |
| node); |
| |
| // Point to what was found, if there's an accessible span. |
| match tcx.map.opt_span(nodeid) { |
| Some(sp) => tcx.sess.span_fatal(sp, &message), |
| None => tcx.sess.fatal(&message), |
| } |
| } |
| } |
| } |
| _ => unreachable!(), |
| } |
| }), sess).unwrap(); |
| |
| write_output(out, ofile); |
| } |