From d131abefc3aa53fc6376593729e6931326270503 Mon Sep 17 00:00:00 2001
From: Mazdak Farrokhzad <twingoow@gmail.com>
Date: Tue, 8 Oct 2019 21:50:09 +0200
Subject: [PATCH] ast: don't use pprust in Debug

---
 src/libsyntax/ast.rs | 47 ++++++--------------------------------------
 1 file changed, 6 insertions(+), 41 deletions(-)

diff --git a/src/libsyntax/ast.rs b/src/libsyntax/ast.rs
index 023952042e6..1c78672da1a 100644
--- a/src/libsyntax/ast.rs
+++ b/src/libsyntax/ast.rs
@@ -70,7 +70,7 @@ impl fmt::Display for Lifetime {
 /// along with a bunch of supporting information.
 ///
 /// E.g., `std::cmp::PartialEq`.
-#[derive(Clone, RustcEncodable, RustcDecodable)]
+#[derive(Clone, RustcEncodable, RustcDecodable, Debug)]
 pub struct Path {
     pub span: Span,
     /// The segments in the path: the things separated by `::`.
@@ -86,12 +86,6 @@ impl PartialEq<Symbol> for Path {
     }
 }
 
-impl fmt::Debug for Path {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "path({})", pprust::path_to_string(self))
-    }
-}
-
 impl fmt::Display for Path {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         write!(f, "{}", pprust::path_to_string(self))
@@ -507,19 +501,13 @@ pub struct Block {
     pub span: Span,
 }
 
-#[derive(Clone, RustcEncodable, RustcDecodable)]
+#[derive(Clone, RustcEncodable, RustcDecodable, Debug)]
 pub struct Pat {
     pub id: NodeId,
     pub kind: PatKind,
     pub span: Span,
 }
 
-impl fmt::Debug for Pat {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "pat({}: {})", self.id, pprust::pat_to_string(self))
-    }
-}
-
 impl Pat {
     /// Attempt reparsing the pattern as a type.
     /// This is intended for use by diagnostics.
@@ -831,7 +819,7 @@ impl UnOp {
 }
 
 /// A statement
-#[derive(Clone, RustcEncodable, RustcDecodable)]
+#[derive(Clone, RustcEncodable, RustcDecodable, Debug)]
 pub struct Stmt {
     pub id: NodeId,
     pub kind: StmtKind,
@@ -865,18 +853,7 @@ impl Stmt {
     }
 }
 
-impl fmt::Debug for Stmt {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(
-            f,
-            "stmt({}: {})",
-            self.id.to_string(),
-            pprust::stmt_to_string(self)
-        )
-    }
-}
-
-#[derive(Clone, RustcEncodable, RustcDecodable)]
+#[derive(Clone, RustcEncodable, RustcDecodable, Debug)]
 pub enum StmtKind {
     /// A local (let) binding.
     Local(P<Local>),
@@ -973,7 +950,7 @@ pub struct AnonConst {
 }
 
 /// An expression.
-#[derive(Clone, RustcEncodable, RustcDecodable)]
+#[derive(Clone, RustcEncodable, RustcDecodable, Debug)]
 pub struct Expr {
     pub id: NodeId,
     pub kind: ExprKind,
@@ -1100,12 +1077,6 @@ impl Expr {
     }
 }
 
-impl fmt::Debug for Expr {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "expr({}: {})", self.id, pprust::expr_to_string(self))
-    }
-}
-
 /// Limit types of a range (inclusive or exclusive)
 #[derive(Copy, Clone, PartialEq, RustcEncodable, RustcDecodable, Debug)]
 pub enum RangeLimits {
@@ -1660,19 +1631,13 @@ pub enum AssocTyConstraintKind {
     },
 }
 
-#[derive(Clone, RustcEncodable, RustcDecodable)]
+#[derive(Clone, RustcEncodable, RustcDecodable, Debug)]
 pub struct Ty {
     pub id: NodeId,
     pub kind: TyKind,
     pub span: Span,
 }
 
-impl fmt::Debug for Ty {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "type({})", pprust::ty_to_string(self))
-    }
-}
-
 #[derive(Clone, RustcEncodable, RustcDecodable, Debug)]
 pub struct BareFnTy {
     pub unsafety: Unsafety,