From aa20d96c31fed2dad509391109545d8ebba824c7 Mon Sep 17 00:00:00 2001 From: Guillaume Gomez Date: Tue, 17 Mar 2020 15:08:11 +0100 Subject: [PATCH 1/3] Don't prepend with space before paren --- src/librustc_ast_pretty/pprust.rs | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) diff --git a/src/librustc_ast_pretty/pprust.rs b/src/librustc_ast_pretty/pprust.rs index b2e6ab7c5e777..bb73e982a9c28 100644 --- a/src/librustc_ast_pretty/pprust.rs +++ b/src/librustc_ast_pretty/pprust.rs @@ -148,12 +148,19 @@ pub fn to_string(f: impl FnOnce(&mut State<'_>)) -> String { // This makes comma-separated lists look slightly nicer, // and also addresses a specific regression described in issue #63896. -fn tt_prepend_space(tt: &TokenTree) -> bool { +fn tt_prepend_space(tt: &TokenTree, prev: &TokenTree) -> bool { match tt { TokenTree::Token(token) => match token.kind { token::Comma => false, _ => true, }, + TokenTree::Delimited(_, DelimToken::Paren, _) => match prev { + TokenTree::Token(token) => match token.kind { + token::Ident(_, _) => false, + _ => true, + }, + _ => true, + }, _ => true, } } @@ -650,11 +657,14 @@ pub trait PrintState<'a>: std::ops::Deref + std::ops::Dere } fn print_tts(&mut self, tts: tokenstream::TokenStream, convert_dollar_crate: bool) { - for (i, tt) in tts.into_trees().enumerate() { - if i != 0 && tt_prepend_space(&tt) { + let mut iter = tts.into_trees().peekable(); + while let Some(tt) = iter.next() { + let show_space = + if let Some(next) = iter.peek() { tt_prepend_space(next, &tt) } else { false }; + self.print_tt(tt, convert_dollar_crate); + if show_space { self.space(); } - self.print_tt(tt, convert_dollar_crate); } } From 81172d8f39685fe52aac077c18ccdc899f94d363 Mon Sep 17 00:00:00 2001 From: Guillaume Gomez Date: Tue, 17 Mar 2020 15:08:18 +0100 Subject: [PATCH 2/3] Update pretty tests --- src/test/pretty/attr-literals.rs | 2 +- src/test/pretty/delimited-token-groups.rs | 7 +++---- .../pretty/issue-68710-field-attr-proc-mac-lost.rs | 2 +- src/test/ui/macros/trace-macro.stderr | 2 +- .../ui/proc-macro/attribute-spans-preserved.stdout | 2 +- .../ui/proc-macro/dollar-crate-issue-57089.stdout | 4 ++-- .../ui/proc-macro/dollar-crate-issue-62325.stdout | 4 ++-- src/test/ui/proc-macro/dollar-crate.stdout | 12 ++++++------ 8 files changed, 17 insertions(+), 18 deletions(-) diff --git a/src/test/pretty/attr-literals.rs b/src/test/pretty/attr-literals.rs index 9db7e27b16103..44d2c5db3e668 100644 --- a/src/test/pretty/attr-literals.rs +++ b/src/test/pretty/attr-literals.rs @@ -5,7 +5,7 @@ #![feature(rustc_attrs)] fn main() { - #![rustc_dummy("hi", 1, 2, 1.012, pi = 3.14, bye, name ("John"))] + #![rustc_dummy("hi", 1, 2, 1.012, pi = 3.14, bye, name("John"))] #[rustc_dummy = 8] fn f() { } diff --git a/src/test/pretty/delimited-token-groups.rs b/src/test/pretty/delimited-token-groups.rs index 7bbb7dc911f93..66de0fc6cf7fa 100644 --- a/src/test/pretty/delimited-token-groups.rs +++ b/src/test/pretty/delimited-token-groups.rs @@ -7,7 +7,7 @@ macro_rules! mac { ($ ($ tt : tt) *) => () } mac! { struct S { field1 : u8, field2 : u16, } impl Clone for S { - fn clone () -> S + fn clone() -> S { panic ! () ; @@ -16,9 +16,8 @@ mac! { } mac! { - a - (aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa - aaaaaaaa aaaaaaaa) a + a(aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa + aaaaaaaa aaaaaaaa) a [aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa] a { diff --git a/src/test/pretty/issue-68710-field-attr-proc-mac-lost.rs b/src/test/pretty/issue-68710-field-attr-proc-mac-lost.rs index 643ca761aac32..031a482595932 100644 --- a/src/test/pretty/issue-68710-field-attr-proc-mac-lost.rs +++ b/src/test/pretty/issue-68710-field-attr-proc-mac-lost.rs @@ -12,5 +12,5 @@ const C: C = #[cfg(debug_assertions)] field: 0, - #[cfg(not (debug_assertions))] + #[cfg(not(debug_assertions))] field: 1,}; diff --git a/src/test/ui/macros/trace-macro.stderr b/src/test/ui/macros/trace-macro.stderr index 202a9235adbac..6217decd8ef88 100644 --- a/src/test/ui/macros/trace-macro.stderr +++ b/src/test/ui/macros/trace-macro.stderr @@ -5,5 +5,5 @@ LL | println!("Hello, World!"); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: expanding `println! { "Hello, World!" }` - = note: to `{ $crate :: io :: _print ($crate :: format_args_nl ! ("Hello, World!")) ; }` + = note: to `{ $crate :: io :: _print($crate :: format_args_nl ! ("Hello, World!")) ; }` diff --git a/src/test/ui/proc-macro/attribute-spans-preserved.stdout b/src/test/ui/proc-macro/attribute-spans-preserved.stdout index faf3171215665..cf9a97491f039 100644 --- a/src/test/ui/proc-macro/attribute-spans-preserved.stdout +++ b/src/test/ui/proc-macro/attribute-spans-preserved.stdout @@ -1 +1 @@ -fn main () { let y : u32 = "z" ; { let x : u32 = "y" ; } } +fn main() { let y : u32 = "z" ; { let x : u32 = "y" ; } } diff --git a/src/test/ui/proc-macro/dollar-crate-issue-57089.stdout b/src/test/ui/proc-macro/dollar-crate-issue-57089.stdout index ea06f6c1acaf9..15433bebde967 100644 --- a/src/test/ui/proc-macro/dollar-crate-issue-57089.stdout +++ b/src/test/ui/proc-macro/dollar-crate-issue-57089.stdout @@ -1,4 +1,4 @@ -PRINT-BANG INPUT (DISPLAY): struct M ($crate :: S) ; +PRINT-BANG INPUT (DISPLAY): struct M($crate :: S) ; PRINT-BANG INPUT (DEBUG): TokenStream [ Ident { ident: "struct", @@ -39,7 +39,7 @@ PRINT-BANG INPUT (DEBUG): TokenStream [ }, ] PRINT-ATTR INPUT (DISPLAY): struct A(crate::S); -PRINT-ATTR RE-COLLECTED (DISPLAY): struct A ($crate :: S) ; +PRINT-ATTR RE-COLLECTED (DISPLAY): struct A($crate :: S) ; PRINT-ATTR INPUT (DEBUG): TokenStream [ Ident { ident: "struct", diff --git a/src/test/ui/proc-macro/dollar-crate-issue-62325.stdout b/src/test/ui/proc-macro/dollar-crate-issue-62325.stdout index 619b2fd5321ff..73e407918ec8c 100644 --- a/src/test/ui/proc-macro/dollar-crate-issue-62325.stdout +++ b/src/test/ui/proc-macro/dollar-crate-issue-62325.stdout @@ -1,5 +1,5 @@ PRINT-ATTR INPUT (DISPLAY): struct A(identity!(crate :: S)); -PRINT-ATTR RE-COLLECTED (DISPLAY): struct A (identity ! ($crate :: S)) ; +PRINT-ATTR RE-COLLECTED (DISPLAY): struct A(identity ! ($crate :: S)) ; PRINT-ATTR INPUT (DEBUG): TokenStream [ Ident { ident: "struct", @@ -55,7 +55,7 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [ }, ] PRINT-ATTR INPUT (DISPLAY): struct B(identity!(::dollar_crate_external :: S)); -PRINT-ATTR RE-COLLECTED (DISPLAY): struct B (identity ! ($crate :: S)) ; +PRINT-ATTR RE-COLLECTED (DISPLAY): struct B(identity ! ($crate :: S)) ; PRINT-ATTR INPUT (DEBUG): TokenStream [ Ident { ident: "struct", diff --git a/src/test/ui/proc-macro/dollar-crate.stdout b/src/test/ui/proc-macro/dollar-crate.stdout index 5fdc6f8ee96ca..e125a3e7f1737 100644 --- a/src/test/ui/proc-macro/dollar-crate.stdout +++ b/src/test/ui/proc-macro/dollar-crate.stdout @@ -1,4 +1,4 @@ -PRINT-BANG INPUT (DISPLAY): struct M ($crate :: S) ; +PRINT-BANG INPUT (DISPLAY): struct M($crate :: S) ; PRINT-BANG INPUT (DEBUG): TokenStream [ Ident { ident: "struct", @@ -39,7 +39,7 @@ PRINT-BANG INPUT (DEBUG): TokenStream [ }, ] PRINT-ATTR INPUT (DISPLAY): struct A(crate::S); -PRINT-ATTR RE-COLLECTED (DISPLAY): struct A ($crate :: S) ; +PRINT-ATTR RE-COLLECTED (DISPLAY): struct A($crate :: S) ; PRINT-ATTR INPUT (DEBUG): TokenStream [ Ident { ident: "struct", @@ -80,7 +80,7 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [ }, ] PRINT-DERIVE INPUT (DISPLAY): struct D(crate::S); -PRINT-DERIVE RE-COLLECTED (DISPLAY): struct D ($crate :: S) ; +PRINT-DERIVE RE-COLLECTED (DISPLAY): struct D($crate :: S) ; PRINT-DERIVE INPUT (DEBUG): TokenStream [ Ident { ident: "struct", @@ -120,7 +120,7 @@ PRINT-DERIVE INPUT (DEBUG): TokenStream [ span: #3 bytes(LO..HI), }, ] -PRINT-BANG INPUT (DISPLAY): struct M ($crate :: S) ; +PRINT-BANG INPUT (DISPLAY): struct M($crate :: S) ; PRINT-BANG INPUT (DEBUG): TokenStream [ Ident { ident: "struct", @@ -161,7 +161,7 @@ PRINT-BANG INPUT (DEBUG): TokenStream [ }, ] PRINT-ATTR INPUT (DISPLAY): struct A(::dollar_crate_external::S); -PRINT-ATTR RE-COLLECTED (DISPLAY): struct A ($crate :: S) ; +PRINT-ATTR RE-COLLECTED (DISPLAY): struct A($crate :: S) ; PRINT-ATTR INPUT (DEBUG): TokenStream [ Ident { ident: "struct", @@ -202,7 +202,7 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [ }, ] PRINT-DERIVE INPUT (DISPLAY): struct D(::dollar_crate_external::S); -PRINT-DERIVE RE-COLLECTED (DISPLAY): struct D ($crate :: S) ; +PRINT-DERIVE RE-COLLECTED (DISPLAY): struct D($crate :: S) ; PRINT-DERIVE INPUT (DEBUG): TokenStream [ Ident { ident: "struct", From 9a017da45922efa25f3e40b6a999b47aa1af9c89 Mon Sep 17 00:00:00 2001 From: Guillaume Gomez Date: Tue, 17 Mar 2020 15:08:44 +0100 Subject: [PATCH 3/3] Update rustdoc test and remove TODO comment --- src/librustdoc/html/render.rs | 1 - src/test/rustdoc/attributes.rs | 2 +- 2 files changed, 1 insertion(+), 2 deletions(-) diff --git a/src/librustdoc/html/render.rs b/src/librustdoc/html/render.rs index b3d70475bf3c3..d782a9d5a094d 100644 --- a/src/librustdoc/html/render.rs +++ b/src/librustdoc/html/render.rs @@ -3151,7 +3151,6 @@ fn render_attributes(w: &mut Buffer, it: &clean::Item, top: bool) { continue; } - // FIXME: this currently renders too many spaces as in: `#[repr(C, align (8))]`. attrs.push_str(&pprust::attribute_to_string(&attr)); } if !attrs.is_empty() { diff --git a/src/test/rustdoc/attributes.rs b/src/test/rustdoc/attributes.rs index d5772e183bcb2..e9cd3514a07e2 100644 --- a/src/test/rustdoc/attributes.rs +++ b/src/test/rustdoc/attributes.rs @@ -16,6 +16,6 @@ pub enum Foo { Bar, } -// @has foo/struct.Repr.html '//*[@class="docblock attributes top-attr"]' '#[repr(C, align (8))]' +// @has foo/struct.Repr.html '//*[@class="docblock attributes top-attr"]' '#[repr(C, align(8))]' #[repr(C, align(8))] pub struct Repr;