Fix pretty printing of parsed attrs in hir_pretty

Author: compiler-errors

compiler/rustc_attr_data_structures/src/lib.rs

@@ -126,7 +126,7 @@ macro_rules! print_tup {
                 let ($t, $($ts),*) = self;
                 let parens = print_tup!(num_should_render $t $($ts)*) > 1;
                 if parens {
-                    p.word("(");
+                    p.popen();
                 }
 
                 let mut printed_anything = $t.should_render();
@@ -142,7 +142,7 @@ macro_rules! print_tup {
                 )*
 
                 if parens {
-                    p.word(")");
+                    p.pclose();
                 }
             }
         }
@@ -153,5 +153,5 @@ macro_rules! print_tup {
 
 print_tup!(A B C D E F G H);
 print_skip!(Span, ());
-print_disp!(Symbol, u16, bool, NonZero<u32>);
-print_debug!(UintTy, IntTy, Align, AttrStyle, CommentKind, Transparency);
+print_disp!(u16, bool, NonZero<u32>);
+print_debug!(Symbol, UintTy, IntTy, Align, AttrStyle, CommentKind, Transparency);

compiler/rustc_hir_pretty/src/lib.rs

@@ -118,9 +118,9 @@ impl<'a> State<'a> {
                 self.hardbreak()
             }
             hir::Attribute::Parsed(pa) => {
-                self.word("#[attr=\"");
+                self.word("#[attr = ");
                 pa.print_attribute(self);
-                self.word("\")]");
+                self.word("]");
                 self.hardbreak()
             }
         }

compiler/rustc_macros/src/print_attribute.rs

@@ -16,12 +16,14 @@ fn print_fields(name: &Ident, fields: &Fields) -> (TokenStream, TokenStream, Tok
                 let name = field.ident.as_ref().unwrap();
                 let string_name = name.to_string();
                 disps.push(quote! {
-                    if __printed_anything && #name.should_render() {
-                        __p.word_space(",");
+                    if #name.should_render() {
+                        if __printed_anything {
+                            __p.word_space(",");
+                        }
+                        __p.word(#string_name);
+                        __p.word_space(":");
                         __printed_anything = true;
                     }
-                    __p.word(#string_name);
-                    __p.word_space(":");
                     #name.print_attribute(__p);
                 });
                 field_names.push(name);
@@ -35,6 +37,7 @@ fn print_fields(name: &Ident, fields: &Fields) -> (TokenStream, TokenStream, Tok
                         return;
                     }
 
+                    __p.nbsp();
                     __p.word("{");
                     #(#disps)*
                     __p.word("}");
@@ -48,8 +51,10 @@ fn print_fields(name: &Ident, fields: &Fields) -> (TokenStream, TokenStream, Tok
             for idx in 0..fields_unnamed.unnamed.len() {
                 let name = format_ident!("f{idx}");
                 disps.push(quote! {
-                    if __printed_anything && #name.should_render() {
-                        __p.word_space(",");
+                    if #name.should_render() {
+                        if __printed_anything {
+                            __p.word_space(",");
+                        }
                         __printed_anything = true;
                     }
                     #name.print_attribute(__p);
@@ -66,9 +71,9 @@ fn print_fields(name: &Ident, fields: &Fields) -> (TokenStream, TokenStream, Tok
                         return;
                     }
 
-                    __p.word("(");
+                    __p.popen();
                     #(#disps)*
-                    __p.word(")");
+                    __p.pclose();
                 },
                 quote! { true },
             )

tests/ui/unpretty/deprecated-attr.stdout

@@ -5,22 +5,23 @@ extern crate std;
 //@ compile-flags: -Zunpretty=hir
 //@ check-pass
 
-#[attr="Deprecation{deprecation: Deprecation{since: Unspecifiednote:
-suggestion: }span: }")]
+// FIXME(jdonszelmann): the pretty printing output for deprecated (and possibly more attrs) is
+// slightly broken.
+#[attr = Deprecation {deprecation: Deprecation {since: Unspecified}}]
 struct PlainDeprecated;
 
-#[attr="Deprecation{deprecation: Deprecation{since: Unspecifiednote:
-here's why this is deprecatedsuggestion: }span: }")]
+#[attr = Deprecation {deprecation: Deprecation {since: Unspecified, note:
+"here's why this is deprecated"}}]
 struct DirectNote;
 
-#[attr="Deprecation{deprecation: Deprecation{since: Unspecifiednote:
-here's why this is deprecatedsuggestion: }span: }")]
+#[attr = Deprecation {deprecation: Deprecation {since: Unspecified, note:
+"here's why this is deprecated"}}]
 struct ExplicitNote;
 
-#[attr="Deprecation{deprecation: Deprecation{since: NonStandard(1.2.3)note:
-here's why this is deprecatedsuggestion: }span: }")]
+#[attr = Deprecation {deprecation: Deprecation {since: NonStandard("1.2.3"),
+note: "here's why this is deprecated"}}]
 struct SinceAndNote;
 
-#[attr="Deprecation{deprecation: Deprecation{since: NonStandard(1.2.3)note:
-here's why this is deprecatedsuggestion: }span: }")]
+#[attr = Deprecation {deprecation: Deprecation {since: NonStandard("1.2.3"),
+note: "here's why this is deprecated"}}]
 struct FlippedOrder;