Omit integer suffix when unnecessary

See PR # 21378 for context

4 files changed, 29 insertions, 29 deletions

diff --git a/src/libsyntax/parse/lexer/comments.rs b/src/libsyntax/parse/lexer/comments.rs
index 926385ccd11..a026b8feee1 100644
--- a/src/libsyntax/parse/lexer/comments.rs
+++ b/src/libsyntax/parse/lexer/comments.rs
@@ -62,7 +62,7 @@ pub fn doc_comment_style(comment: &str) -> ast::AttrStyle {
 pub fn strip_doc_comment_decoration(comment: &str) -> String {
     /// remove whitespace-only lines from the start/end of lines
     fn vertical_trim(lines: Vec<String> ) -> Vec<String> {
-        let mut i = 0us;
+        let mut i = 0;
         let mut j = lines.len();
         // first line of all-stars should be omitted
         if lines.len() > 0 &&
@@ -158,7 +158,7 @@ fn push_blank_line_comment(rdr: &StringReader, comments: &mut Vec<Comment>) {
 fn consume_whitespace_counting_blank_lines(rdr: &mut StringReader,
                                            comments: &mut Vec<Comment>) {
     while is_whitespace(rdr.curr) && !rdr.is_eof() {
-        if rdr.col == CharPos(0us) && rdr.curr_is('\n') {
+        if rdr.col == CharPos(0) && rdr.curr_is('\n') {
             push_blank_line_comment(rdr, &mut *comments);
         }
         rdr.bump();
@@ -305,7 +305,7 @@ fn read_block_comment(rdr: &mut StringReader,
 
     let mut style = if code_to_the_left { Trailing } else { Isolated };
     rdr.consume_non_eol_whitespace();
-    if !rdr.is_eof() && !rdr.curr_is('\n') && lines.len() == 1us {
+    if !rdr.is_eof() && !rdr.curr_is('\n') && lines.len() == 1 {
         style = Mixed;
     }
     debug!("<<< block comment");
diff --git a/src/libsyntax/parse/lexer/mod.rs b/src/libsyntax/parse/lexer/mod.rs
index 2cf6058a433..65051ff8360 100644
--- a/src/libsyntax/parse/lexer/mod.rs
+++ b/src/libsyntax/parse/lexer/mod.rs
@@ -279,7 +279,7 @@ impl<'a> StringReader<'a> {
     /// Converts CRLF to LF in the given string, raising an error on bare CR.
     fn translate_crlf<'b>(&self, start: BytePos,
                           s: &'b str, errmsg: &'b str) -> CowString<'b> {
-        let mut i = 0us;
+        let mut i = 0;
         while i < s.len() {
             let str::CharRange { ch, next } = s.char_range_at(i);
             if ch == '\r' {
@@ -331,10 +331,10 @@ impl<'a> StringReader<'a> {
             let byte_offset_diff = next.next - current_byte_offset;
             self.pos = self.pos + Pos::from_usize(byte_offset_diff);
             self.curr = Some(next.ch);
-            self.col = self.col + CharPos(1us);
+            self.col = self.col + CharPos(1);
             if last_char == '\n' {
                 self.filemap.next_line(self.last_pos);
-                self.col = CharPos(0us);
+                self.col = CharPos(0);
             }
 
             if byte_offset_diff > 1 {
@@ -472,7 +472,7 @@ impl<'a> StringReader<'a> {
                 cmap.files.borrow_mut().push(self.filemap.clone());
                 let loc = cmap.lookup_char_pos_adj(self.last_pos);
                 debug!("Skipping a shebang");
-                if loc.line == 1us && loc.col == CharPos(0us) {
+                if loc.line == 1 && loc.col == CharPos(0) {
                     // FIXME: Add shebang "token", return it
                     let start = self.last_pos;
                     while !self.curr_is('\n') && !self.is_eof() { self.bump(); }
@@ -646,7 +646,7 @@ impl<'a> StringReader<'a> {
     /// Scan through any digits (base `radix`) or underscores, and return how
     /// many digits there were.
     fn scan_digits(&mut self, radix: usize) -> usize {
-        let mut len = 0us;
+        let mut len = 0;
         loop {
             let c = self.curr;
             if c == Some('_') { debug!("skipping a _"); self.bump(); continue; }
@@ -799,14 +799,14 @@ impl<'a> StringReader<'a> {
                                 if self.curr == Some('{') {
                                     self.scan_unicode_escape(delim)
                                 } else {
-                                    let res = self.scan_hex_digits(4us, delim, false);
+                                    let res = self.scan_hex_digits(4, delim, false);
                                     let sp = codemap::mk_sp(escaped_pos, self.last_pos);
                                     self.old_escape_warning(sp);
                                     res
                                 }
                             }
                             'U' if !ascii_only => {
-                                let res = self.scan_hex_digits(8us, delim, false);
+                                let res = self.scan_hex_digits(8, delim, false);
                                 let sp = codemap::mk_sp(escaped_pos, self.last_pos);
                                 self.old_escape_warning(sp);
                                 res
@@ -877,7 +877,7 @@ impl<'a> StringReader<'a> {
     fn scan_unicode_escape(&mut self, delim: char) -> bool {
         self.bump(); // past the {
         let start_bpos = self.last_pos;
-        let mut count = 0us;
+        let mut count = 0;
         let mut accum_int = 0;
 
         while !self.curr_is('}') && count <= 6 {
@@ -937,10 +937,10 @@ impl<'a> StringReader<'a> {
     /// error if it isn't.
     fn check_float_base(&mut self, start_bpos: BytePos, last_bpos: BytePos, base: usize) {
         match base {
-            16us => self.err_span_(start_bpos, last_bpos, "hexadecimal float literal is not \
+            16 => self.err_span_(start_bpos, last_bpos, "hexadecimal float literal is not \
                                    supported"),
-            8us => self.err_span_(start_bpos, last_bpos, "octal float literal is not supported"),
-            2us => self.err_span_(start_bpos, last_bpos, "binary float literal is not supported"),
+            8 => self.err_span_(start_bpos, last_bpos, "octal float literal is not supported"),
+            2 => self.err_span_(start_bpos, last_bpos, "binary float literal is not supported"),
             _   => ()
         }
     }
@@ -1189,7 +1189,7 @@ impl<'a> StringReader<'a> {
           'r' => {
             let start_bpos = self.last_pos;
             self.bump();
-            let mut hash_count = 0us;
+            let mut hash_count = 0;
             while self.curr_is('#') {
                 self.bump();
                 hash_count += 1;
@@ -1374,7 +1374,7 @@ impl<'a> StringReader<'a> {
     fn scan_raw_byte_string(&mut self) -> token::Lit {
         let start_bpos = self.last_pos;
         self.bump();
-        let mut hash_count = 0us;
+        let mut hash_count = 0;
         while self.curr_is('#') {
             self.bump();
             hash_count += 1;
diff --git a/src/libsyntax/parse/mod.rs b/src/libsyntax/parse/mod.rs
index 8ac5b6e5274..af594ce7ca2 100644
--- a/src/libsyntax/parse/mod.rs
+++ b/src/libsyntax/parse/mod.rs
@@ -181,7 +181,7 @@ pub fn parse_tts_from_source_str(name: String,
         name,
         source
     );
-    p.quote_depth += 1us;
+    p.quote_depth += 1;
     // right now this is re-creating the token trees from ... token trees.
     maybe_aborted(p.parse_all_token_trees(),p)
 }
@@ -324,7 +324,7 @@ pub mod with_hygiene {
             name,
             source
         );
-        p.quote_depth += 1us;
+        p.quote_depth += 1;
         // right now this is re-creating the token trees from ... token trees.
         maybe_aborted(p.parse_all_token_trees(),p)
     }
@@ -683,9 +683,9 @@ pub fn integer_lit(s: &str, suffix: Option<&str>, sd: &SpanHandler, sp: Span) ->
     match suffix {
         Some(suf) if looks_like_width_suffix(&['f'], suf) => {
             match base {
-                16us => sd.span_err(sp, "hexadecimal float literal is not supported"),
-                8us => sd.span_err(sp, "octal float literal is not supported"),
-                2us => sd.span_err(sp, "binary float literal is not supported"),
+                16 => sd.span_err(sp, "hexadecimal float literal is not supported"),
+                8 => sd.span_err(sp, "octal float literal is not supported"),
+                2 => sd.span_err(sp, "binary float literal is not supported"),
                 _ => ()
             }
             let ident = token::intern_and_get_ident(&*s);
diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs
index d99095eeba3..de12e370381 100644
--- a/src/libsyntax/parse/parser.rs
+++ b/src/libsyntax/parse/parser.rs
@@ -740,7 +740,7 @@ impl<'a> Parser<'a> {
         // would encounter a `>` and stop. This lets the parser handle trailing
         // commas in generic parameters, because it can stop either after
         // parsing a type or after parsing a comma.
-        for i in iter::count(0us, 1) {
+        for i in iter::count(0, 1) {
             if self.check(&token::Gt)
                 || self.token == token::BinOp(token::Shr)
                 || self.token == token::Ge
@@ -917,7 +917,7 @@ impl<'a> Parser<'a> {
         };
         self.span = next.sp;
         self.token = next.tok;
-        self.tokens_consumed += 1us;
+        self.tokens_consumed += 1;
         self.expected_tokens.clear();
         // check after each token
         self.check_unknown_macro_variable();
@@ -2625,7 +2625,7 @@ impl<'a> Parser<'a> {
     }
 
     pub fn check_unknown_macro_variable(&mut self) {
-        if self.quote_depth == 0us {
+        if self.quote_depth == 0 {
             match self.token {
                 token::SubstNt(name, _) =>
                     self.fatal(&format!("unknown macro variable `{}`",
@@ -2694,7 +2694,7 @@ impl<'a> Parser<'a> {
                                     token_str)[])
                 },
                 /* we ought to allow different depths of unquotation */
-                token::Dollar | token::SubstNt(..) if p.quote_depth > 0us => {
+                token::Dollar | token::SubstNt(..) if p.quote_depth > 0 => {
                     p.parse_unquoted()
                 }
                 _ => {
@@ -5633,7 +5633,7 @@ impl<'a> Parser<'a> {
             return Ok(item);
         }
         if self.token.is_keyword(keywords::Unsafe) &&
-            self.look_ahead(1us, |t| t.is_keyword(keywords::Trait))
+            self.look_ahead(1, |t| t.is_keyword(keywords::Trait))
         {
             // UNSAFE TRAIT ITEM
             self.expect_keyword(keywords::Unsafe);
@@ -5650,7 +5650,7 @@ impl<'a> Parser<'a> {
             return Ok(item);
         }
         if self.token.is_keyword(keywords::Unsafe) &&
-            self.look_ahead(1us, |t| t.is_keyword(keywords::Impl))
+            self.look_ahead(1, |t| t.is_keyword(keywords::Impl))
         {
             // IMPL ITEM
             self.expect_keyword(keywords::Unsafe);
@@ -5680,7 +5680,7 @@ impl<'a> Parser<'a> {
             return Ok(item);
         }
         if self.token.is_keyword(keywords::Unsafe)
-            && self.look_ahead(1us, |t| *t != token::OpenDelim(token::Brace)) {
+            && self.look_ahead(1, |t| *t != token::OpenDelim(token::Brace)) {
             // UNSAFE FUNCTION ITEM
             self.bump();
             let abi = if self.eat_keyword(keywords::Extern) {
@@ -5958,7 +5958,7 @@ impl<'a> Parser<'a> {
                 }
             }
         }
-        let mut rename_to = path[path.len() - 1us];
+        let mut rename_to = path[path.len() - 1];
         let path = ast::Path {
             span: mk_sp(lo, self.last_span.hi),
             global: false,