diff options
| -rw-r--r-- | src/librustc/hir/print.rs | 9 | ||||
| -rw-r--r-- | src/librustc/middle/reachable.rs | 6 | ||||
| -rw-r--r-- | src/librustc_data_structures/obligation_forest/mod.rs | 8 | ||||
| -rw-r--r-- | src/libstd/sys_common/wtf8.rs | 23 | ||||
| -rw-r--r-- | src/libsyntax_ext/format.rs | 17 | ||||
| -rw-r--r-- | src/libsyntax_pos/lib.rs | 7 |
6 files changed, 20 insertions, 50 deletions
diff --git a/src/librustc/hir/print.rs b/src/librustc/hir/print.rs index ed8cea3eb65..d91aa3a3851 100644 --- a/src/librustc/hir/print.rs +++ b/src/librustc/hir/print.rs @@ -2208,13 +2208,8 @@ impl<'a> State<'a> { if self.next_comment().is_none() { self.s.hardbreak()?; } - loop { - match self.next_comment() { - Some(ref cmnt) => { - self.print_comment(cmnt)?; - } - _ => break, - } + while let Some(ref cmnt) = self.next_comment() { + self.print_comment(cmnt)? } Ok(()) } diff --git a/src/librustc/middle/reachable.rs b/src/librustc/middle/reachable.rs index 749685182a8..5658b5b6832 100644 --- a/src/librustc/middle/reachable.rs +++ b/src/librustc/middle/reachable.rs @@ -206,11 +206,7 @@ impl<'a, 'tcx> ReachableContext<'a, 'tcx> { // Step 2: Mark all symbols that the symbols on the worklist touch. fn propagate(&mut self) { let mut scanned = FxHashSet(); - loop { - let search_item = match self.worklist.pop() { - Some(item) => item, - None => break, - }; + while let Some(search_item) = self.worklist.pop() { if !scanned.insert(search_item) { continue } diff --git a/src/librustc_data_structures/obligation_forest/mod.rs b/src/librustc_data_structures/obligation_forest/mod.rs index 02cae52166a..42a17d33fa6 100644 --- a/src/librustc_data_structures/obligation_forest/mod.rs +++ b/src/librustc_data_structures/obligation_forest/mod.rs @@ -415,13 +415,7 @@ impl<O: ForestObligation> ObligationForest<O> { } } - loop { - // non-standard `while let` to bypass #6393 - let i = match error_stack.pop() { - Some(i) => i, - None => break - }; - + while let Some(i) = error_stack.pop() { let node = &self.nodes[i]; match node.state.get() { diff --git a/src/libstd/sys_common/wtf8.rs b/src/libstd/sys_common/wtf8.rs index 46d554d6411..9fff8b91f96 100644 --- a/src/libstd/sys_common/wtf8.rs +++ b/src/libstd/sys_common/wtf8.rs @@ -428,20 +428,15 @@ impl fmt::Debug for Wtf8 { formatter.write_str("\"")?; let mut pos = 0; - loop { - match self.next_surrogate(pos) { - None => break, - Some((surrogate_pos, surrogate)) => { - write_str_escaped( - formatter, - unsafe { str::from_utf8_unchecked( - &self.bytes[pos .. surrogate_pos] - )}, - )?; - write!(formatter, "\\u{{{:x}}}", surrogate)?; - pos = surrogate_pos + 3; - } - } + while let Some((surrogate_pos, surrogate)) = self.next_surrogate(pos) { + write_str_escaped( + formatter, + unsafe { str::from_utf8_unchecked( + &self.bytes[pos .. surrogate_pos] + )}, + )?; + write!(formatter, "\\u{{{:x}}}", surrogate)?; + pos = surrogate_pos + 3; } write_str_escaped( formatter, diff --git a/src/libsyntax_ext/format.rs b/src/libsyntax_ext/format.rs index a7822414c69..8fd95aa1ca8 100644 --- a/src/libsyntax_ext/format.rs +++ b/src/libsyntax_ext/format.rs @@ -732,18 +732,13 @@ pub fn expand_preparsed_format_args(ecx: &mut ExtCtxt, let mut parser = parse::Parser::new(fmt_str); let mut pieces = vec![]; - loop { - match parser.next() { - Some(mut piece) => { - if !parser.errors.is_empty() { - break; - } - cx.verify_piece(&piece); - cx.resolve_name_inplace(&mut piece); - pieces.push(piece); - } - None => break, + while let Some(mut piece) = parser.next() { + if !parser.errors.is_empty() { + break; } + cx.verify_piece(&piece); + cx.resolve_name_inplace(&mut piece); + pieces.push(piece); } let numbered_position_args = pieces.iter().any(|arg: &parse::Piece| { diff --git a/src/libsyntax_pos/lib.rs b/src/libsyntax_pos/lib.rs index 9f746adbe65..ed9eb5d5c92 100644 --- a/src/libsyntax_pos/lib.rs +++ b/src/libsyntax_pos/lib.rs @@ -322,12 +322,7 @@ impl Span { pub fn macro_backtrace(mut self) -> Vec<MacroBacktrace> { let mut prev_span = DUMMY_SP; let mut result = vec![]; - loop { - let info = match self.ctxt().outer().expn_info() { - Some(info) => info, - None => break, - }; - + while let Some(info) = self.ctxt().outer().expn_info() { let (pre, post) = match info.callee.format { ExpnFormat::MacroAttribute(..) => ("#[", "]"), ExpnFormat::MacroBang(..) => ("", "!"), |