New upstream version 1.44.1+dfsg1

[rustc.git] / src / librustc_driver / pretty.rs

diff --git a/src/librustc_driver/pretty.rs b/src/librustc_driver/pretty.rs
index ca129ac59849a2798cadc8fa70dbdb06a9ba12ad..78a271810b2881925e3ae0a8592838b23e9dc316 100644 (file)
--- a/src/librustc_driver/pretty.rs
+++ b/src/librustc_driver/pretty.rs
@@ -1,16 +1,16 @@
 //! The various pretty-printing routines.
 
-use rustc::hir::map as hir_map;
-use rustc::session::config::{Input, PpMode, PpSourceMode};
-use rustc::session::Session;
-use rustc::ty::{self, TyCtxt};
-use rustc::util::common::ErrorReported;
 use rustc_ast::ast;
 use rustc_ast_pretty::pprust;
+use rustc_errors::ErrorReported;
 use rustc_hir as hir;
 use rustc_hir::def_id::LOCAL_CRATE;
-use rustc_hir::print as pprust_hir;
+use rustc_hir_pretty as pprust_hir;
+use rustc_middle::hir::map as hir_map;
+use rustc_middle::ty::{self, TyCtxt};
 use rustc_mir::util::{write_mir_graphviz, write_mir_pretty};
+use rustc_session::config::{Input, PpMode, PpSourceMode};
+use rustc_session::Session;
 use rustc_span::FileName;
 
 use std::cell::Cell;
@@ -96,7 +96,7 @@ trait PrinterSupport: pprust::PpAnn {
     ///
     /// (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;
+    fn pp_ann(&self) -> &dyn pprust::PpAnn;
 }
 
 trait HirPrinterSupport<'hir>: pprust_hir::PpAnn {
@@ -106,13 +106,13 @@ trait HirPrinterSupport<'hir>: pprust_hir::PpAnn {
 
     /// 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>>;
+    fn hir_map(&self) -> Option<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;
+    fn pp_ann(&self) -> &dyn pprust_hir::PpAnn;
 
     /// Computes an user-readable representation of a path, if possible.
     fn node_path(&self, id: hir::HirId) -> Option<String> {
@@ -132,7 +132,7 @@ impl<'hir> PrinterSupport for NoAnn<'hir> {
         self.sess
     }
 
-    fn pp_ann<'a>(&'a self) -> &'a dyn pprust::PpAnn {
+    fn pp_ann(&self) -> &dyn pprust::PpAnn {
         self
     }
 }
@@ -142,11 +142,11 @@ impl<'hir> HirPrinterSupport<'hir> for NoAnn<'hir> {
         self.sess
     }
 
-    fn hir_map<'a>(&'a self) -> Option<&'a hir_map::Map<'hir>> {
-        self.tcx.map(|tcx| *tcx.hir())
+    fn hir_map(&self) -> Option<hir_map::Map<'hir>> {
+        self.tcx.map(|tcx| tcx.hir())
     }
 
-    fn pp_ann<'a>(&'a self) -> &'a dyn pprust_hir::PpAnn {
+    fn pp_ann(&self) -> &dyn pprust_hir::PpAnn {
         self
     }
 }
@@ -155,7 +155,7 @@ 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) {
         if let Some(tcx) = self.tcx {
-            pprust_hir::PpAnn::nested(*tcx.hir(), state, nested)
+            pprust_hir::PpAnn::nested(&(&tcx.hir() as &dyn hir::intravisit::Map<'_>), state, nested)
         }
     }
 }
@@ -170,16 +170,15 @@ impl<'hir> PrinterSupport for IdentifiedAnnotation<'hir> {
         self.sess
     }
 
-    fn pp_ann<'a>(&'a self) -> &'a dyn pprust::PpAnn {
+    fn pp_ann(&self) -> &dyn pprust::PpAnn {
         self
     }
 }
 
 impl<'hir> pprust::PpAnn for IdentifiedAnnotation<'hir> {
     fn pre(&self, s: &mut pprust::State<'_>, node: pprust::AnnNode<'_>) {
-        match node {
-            pprust::AnnNode::Expr(_) => s.popen(),
-            _ => {}
+        if let pprust::AnnNode::Expr(_) = node {
+            s.popen();
         }
     }
     fn post(&self, s: &mut pprust::State<'_>, node: pprust::AnnNode<'_>) {
@@ -216,11 +215,11 @@ impl<'hir> HirPrinterSupport<'hir> for IdentifiedAnnotation<'hir> {
         self.sess
     }
 
-    fn hir_map<'a>(&'a self) -> Option<&'a hir_map::Map<'hir>> {
-        self.tcx.map(|tcx| *tcx.hir())
+    fn hir_map(&self) -> Option<hir_map::Map<'hir>> {
+        self.tcx.map(|tcx| tcx.hir())
     }
 
-    fn pp_ann<'a>(&'a self) -> &'a dyn pprust_hir::PpAnn {
+    fn pp_ann(&self) -> &dyn pprust_hir::PpAnn {
         self
     }
 }
@@ -228,13 +227,12 @@ impl<'hir> HirPrinterSupport<'hir> for IdentifiedAnnotation<'hir> {
 impl<'hir> pprust_hir::PpAnn for IdentifiedAnnotation<'hir> {
     fn nested(&self, state: &mut pprust_hir::State<'_>, nested: pprust_hir::Nested) {
         if let Some(ref tcx) = self.tcx {
-            pprust_hir::PpAnn::nested(*tcx.hir(), state, nested)
+            pprust_hir::PpAnn::nested(&(&tcx.hir() as &dyn hir::intravisit::Map<'_>), state, nested)
         }
     }
     fn pre(&self, s: &mut pprust_hir::State<'_>, node: pprust_hir::AnnNode<'_>) {
-        match node {
-            pprust_hir::AnnNode::Expr(_) => s.popen(),
-            _ => {}
+        if let pprust_hir::AnnNode::Expr(_) = node {
+            s.popen();
         }
     }
     fn post(&self, s: &mut pprust_hir::State<'_>, node: pprust_hir::AnnNode<'_>) {
@@ -315,11 +313,11 @@ impl<'b, 'tcx> HirPrinterSupport<'tcx> for TypedAnnotation<'b, 'tcx> {
         &self.tcx.sess
     }
 
-    fn hir_map<'a>(&'a self) -> Option<&'a hir_map::Map<'tcx>> {
-        Some(&self.tcx.hir())
+    fn hir_map(&self) -> Option<hir_map::Map<'tcx>> {
+        Some(self.tcx.hir())
     }
 
-    fn pp_ann<'a>(&'a self) -> &'a dyn pprust_hir::PpAnn {
+    fn pp_ann(&self) -> &dyn pprust_hir::PpAnn {
         self
     }
 
@@ -334,25 +332,22 @@ impl<'a, 'tcx> pprust_hir::PpAnn for TypedAnnotation<'a, 'tcx> {
         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);
+        let pp_ann = &(&self.tcx.hir() as &dyn hir::intravisit::Map<'_>);
+        pprust_hir::PpAnn::nested(pp_ann, state, nested);
         self.tables.set(old_tables);
     }
     fn pre(&self, s: &mut pprust_hir::State<'_>, node: pprust_hir::AnnNode<'_>) {
-        match node {
-            pprust_hir::AnnNode::Expr(_) => s.popen(),
-            _ => {}
+        if let pprust_hir::AnnNode::Expr(_) = node {
+            s.popen();
         }
     }
     fn post(&self, s: &mut pprust_hir::State<'_>, node: pprust_hir::AnnNode<'_>) {
-        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();
-            }
-            _ => {}
+        if let pprust_hir::AnnNode::Expr(expr) = node {
+            s.s.space();
+            s.s.word("as");
+            s.s.space();
+            s.s.word(self.tables.get().expr_ty(expr).to_string());
+            s.pclose();
         }
     }
 }