Move token-to-string functions into print::pprust

src/libsyntax/ext/tt/macro_parser.rs

@@ -87,6 +87,7 @@
 use parse::parser::{LifetimeAndTypesWithoutColons, Parser};
 use parse::token::{Token, Nonterminal};
 use parse::token;
+use print::pprust;
 use ptr::P;
 
 use std::rc::Rc;
@@ -402,7 +403,7 @@ pub fn parse(sess: &ParseSess,
                     nts, next_eis.len()).to_string());
             } else if bb_eis.len() == 0u && next_eis.len() == 0u {
                 return Failure(sp, format!("no rules expected the token `{}`",
-                            token::to_string(&tok)).to_string());
+                            pprust::token_to_string(&tok)).to_string());
             } else if next_eis.len() > 0u {
                 /* Now process the next token */
                 while next_eis.len() > 0u {
@@ -449,7 +450,7 @@ pub fn parse_nt(p: &mut Parser, name: &str) -> Nonterminal {
       "ident" => match p.token {
         token::Ident(sn,b) => { p.bump(); token::NtIdent(box sn,b) }
         _ => {
-            let token_str = token::to_string(&p.token);
+            let token_str = pprust::token_to_string(&p.token);
             p.fatal((format!("expected ident, found {}",
                              token_str.as_slice())).as_slice())
         }

src/libsyntax/parse/lexer/comments.rs

@@ -15,7 +15,7 @@
 use parse::lexer::{StringReader, TokenAndSpan};
 use parse::lexer::is_block_doc_comment;
 use parse::lexer;
-use parse::token;
+use print::pprust;
 
 use std::io;
 use std::str;
@@ -373,7 +373,7 @@ pub fn gather_comments_and_literals(span_diagnostic: &diagnostic::SpanHandler,
                 literals.push(Literal {lit: s.to_string(), pos: sp.lo});
             })
         } else {
-            debug!("tok: {}", token::to_string(&tok));
+            debug!("tok: {}", pprust::token_to_string(&tok));
         }
         first_read = false;
     }

src/libsyntax/parse/parser.rs

@@ -78,6 +78,7 @@
 use parse::token::{keywords, special_idents};
 use parse::token;
 use parse::{new_sub_parser_from_file, ParseSess};
+use print::pprust;
 use ptr::P;
 use owned_slice::OwnedSlice;
 
@@ -394,7 +395,7 @@ pub fn new(sess: &'a ParseSess,
 
     /// Convert a token to a string using self's reader
     pub fn token_to_string(token: &token::Token) -> String {
-        token::to_string(token)
+        pprust::token_to_string(token)
     }
 
     /// Convert the current token to a string using self's reader

src/libsyntax/parse/token.rs

@@ -431,101 +431,6 @@ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
     }
 }
 
-pub fn binop_to_string(o: BinOpToken) -> &'static str {
-    match o {
-        Plus      => "+",
-        Minus     => "-",
-        Star      => "*",
-        Slash     => "/",
-        Percent   => "%",
-        Caret     => "^",
-        And       => "&",
-        Or        => "|",
-        Shl       => "<<",
-        Shr       => ">>",
-    }
-}
-
-pub fn to_string(t: &Token) -> String {
-    match *t {
-        Eq                  => "=".into_string(),
-        Lt                  => "<".into_string(),
-        Le                  => "<=".into_string(),
-        EqEq                => "==".into_string(),
-        Ne                  => "!=".into_string(),
-        Ge                  => ">=".into_string(),
-        Gt                  => ">".into_string(),
-        Not                 => "!".into_string(),
-        Tilde               => "~".into_string(),
-        OrOr                => "||".into_string(),
-        AndAnd              => "&&".into_string(),
-        BinOp(op)           => binop_to_string(op).into_string(),
-        BinOpEq(op)         => format!("{}=", binop_to_string(op)),
-
-        /* Structural symbols */
-        At                  => "@".into_string(),
-        Dot                 => ".".into_string(),
-        DotDot              => "..".into_string(),
-        DotDotDot           => "...".into_string(),
-        Comma               => ",".into_string(),
-        Semi                => ";".into_string(),
-        Colon               => ":".into_string(),
-        ModSep              => "::".into_string(),
-        RArrow              => "->".into_string(),
-        LArrow              => "<-".into_string(),
-        FatArrow            => "=>".into_string(),
-        LParen              => "(".into_string(),
-        RParen              => ")".into_string(),
-        LBracket            => "[".into_string(),
-        RBracket            => "]".into_string(),
-        LBrace              => "{".into_string(),
-        RBrace              => "}".into_string(),
-        Pound               => "#".into_string(),
-        Dollar              => "$".into_string(),
-        Question            => "?".into_string(),
-
-        /* Literals */
-        LitByte(b)          => format!("b'{}'", b.as_str()),
-        LitChar(c)          => format!("'{}'", c.as_str()),
-        LitFloat(c)         => c.as_str().into_string(),
-        LitInteger(c)       => c.as_str().into_string(),
-        LitStr(s)           => format!("\"{}\"", s.as_str()),
-        LitStrRaw(s, n)     => format!("r{delim}\"{string}\"{delim}",
-                                       delim="#".repeat(n),
-                                       string=s.as_str()),
-        LitBinary(v)        => format!("b\"{}\"", v.as_str()),
-        LitBinaryRaw(s, n)  => format!("br{delim}\"{string}\"{delim}",
-                                       delim="#".repeat(n),
-                                       string=s.as_str()),
-
-        /* Name components */
-        Ident(s, _)         => get_ident(s).get().into_string(),
-        Lifetime(s)         => format!("{}", get_ident(s)),
-        Underscore          => "_".into_string(),
-
-        /* Other */
-        DocComment(s)       => s.as_str().into_string(),
-        Eof                 => "<eof>".into_string(),
-        Whitespace          => " ".into_string(),
-        Comment             => "/* */".into_string(),
-        Shebang(s)          => format!("/* shebang: {}*/", s.as_str()),
-
-        Interpolated(ref nt) => match *nt {
-            NtExpr(ref e)  => ::print::pprust::expr_to_string(&**e),
-            NtMeta(ref e)  => ::print::pprust::meta_item_to_string(&**e),
-            NtTy(ref e)    => ::print::pprust::ty_to_string(&**e),
-            NtPath(ref e)  => ::print::pprust::path_to_string(&**e),
-            NtItem(..)     => "an interpolated item".into_string(),
-            NtBlock(..)    => "an interpolated block".into_string(),
-            NtStmt(..)     => "an interpolated statement".into_string(),
-            NtPat(..)      => "an interpolated pattern".into_string(),
-            NtIdent(..)    => "an interpolated identifier".into_string(),
-            NtTT(..)       => "an interpolated tt".into_string(),
-            NtMatchers(..) => "an interpolated matcher sequence".into_string(),
-        }
-    }
-}
-
 // Get the first "argument"
 macro_rules! first {
     ( $first:expr, $( $remainder:expr, )* ) => ( $first )

src/libsyntax/print/pprust.rs

@@ -21,6 +21,7 @@
 use codemap::{CodeMap, BytePos};
 use codemap;
 use diagnostic;
+use parse::token::{BinOpToken, Token};
 use parse::token;
 use parse::lexer::comments;
 use parse;
@@ -181,6 +182,101 @@ pub fn to_string(f: |&mut State| -> IoResult<()>) -> String {
     }
 }
 
+pub fn binop_to_string(op: BinOpToken) -> &'static str {
+    match op {
+        token::Plus     => "+",
+        token::Minus    => "-",
+        token::Star     => "*",
+        token::Slash    => "/",
+        token::Percent  => "%",
+        token::Caret    => "^",
+        token::And      => "&",
+        token::Or       => "|",
+        token::Shl      => "<<",
+        token::Shr      => ">>",
+    }
+}
+
+pub fn token_to_string(tok: &Token) -> String {
+    match *tok {
+        token::Eq                   => "=".into_string(),
+        token::Lt                   => "<".into_string(),
+        token::Le                   => "<=".into_string(),
+        token::EqEq                 => "==".into_string(),
+        token::Ne                   => "!=".into_string(),
+        token::Ge                   => ">=".into_string(),
+        token::Gt                   => ">".into_string(),
+        token::Not                  => "!".into_string(),
+        token::Tilde                => "~".into_string(),
+        token::OrOr                 => "||".into_string(),
+        token::AndAnd               => "&&".into_string(),
+        token::BinOp(op)            => binop_to_string(op).into_string(),
+        token::BinOpEq(op)          => format!("{}=", binop_to_string(op)),
+
+        /* Structural symbols */
+        token::At                   => "@".into_string(),
+        token::Dot                  => ".".into_string(),
+        token::DotDot               => "..".into_string(),
+        token::DotDotDot            => "...".into_string(),
+        token::Comma                => ",".into_string(),
+        token::Semi                 => ";".into_string(),
+        token::Colon                => ":".into_string(),
+        token::ModSep               => "::".into_string(),
+        token::RArrow               => "->".into_string(),
+        token::LArrow               => "<-".into_string(),
+        token::FatArrow             => "=>".into_string(),
+        token::LParen               => "(".into_string(),
+        token::RParen               => ")".into_string(),
+        token::LBracket             => "[".into_string(),
+        token::RBracket             => "]".into_string(),
+        token::LBrace               => "{".into_string(),
+        token::RBrace               => "}".into_string(),
+        token::Pound                => "#".into_string(),
+        token::Dollar               => "$".into_string(),
+        token::Question             => "?".into_string(),
+
+        /* Literals */
+        token::LitByte(b)           => format!("b'{}'", b.as_str()),
+        token::LitChar(c)           => format!("'{}'", c.as_str()),
+        token::LitFloat(c)          => c.as_str().into_string(),
+        token::LitInteger(c)        => c.as_str().into_string(),
+        token::LitStr(s)            => format!("\"{}\"", s.as_str()),
+        token::LitStrRaw(s, n)      => format!("r{delim}\"{string}\"{delim}",
+                                               delim="#".repeat(n),
+                                               string=s.as_str()),
+        token::LitBinary(v)         => format!("b\"{}\"", v.as_str()),
+        token::LitBinaryRaw(s, n)   => format!("br{delim}\"{string}\"{delim}",
+                                               delim="#".repeat(n),
+                                               string=s.as_str()),
+
+        /* Name components */
+        token::Ident(s, _)          => token::get_ident(s).get().into_string(),
+        token::Lifetime(s)          => format!("{}", token::get_ident(s)),
+        token::Underscore           => "_".into_string(),
+
+        /* Other */
+        token::DocComment(s)        => s.as_str().into_string(),
+        token::Eof                  => "<eof>".into_string(),
+        token::Whitespace           => " ".into_string(),
+        token::Comment              => "/* */".into_string(),
+        token::Shebang(s)           => format!("/* shebang: {}*/", s.as_str()),
+
+        token::Interpolated(ref nt) => match *nt {
+            token::NtExpr(ref e)  => expr_to_string(&**e),
+            token::NtMeta(ref e)  => meta_item_to_string(&**e),
+            token::NtTy(ref e)    => ty_to_string(&**e),
+            token::NtPath(ref e)  => path_to_string(&**e),
+            token::NtItem(..)     => "an interpolated item".into_string(),
+            token::NtBlock(..)    => "an interpolated block".into_string(),
+            token::NtStmt(..)     => "an interpolated statement".into_string(),
+            token::NtPat(..)      => "an interpolated pattern".into_string(),
+            token::NtIdent(..)    => "an interpolated identifier".into_string(),
+            token::NtTT(..)       => "an interpolated tt".into_string(),
+            token::NtMatchers(..) => "an interpolated matcher sequence".into_string(),
+        }
+    }
+}
+
 // FIXME (Issue #16472): the thing_to_string_impls macro should go away
 // after we revise the syntax::ext::quote::ToToken impls to go directly
 // to token-trees instead of thing -> string -> token-trees.
@@ -1026,14 +1122,14 @@ pub fn print_tt(&mut self, tt: &ast::TokenTree) -> IoResult<()> {
         match *tt {
             ast::TtDelimited(_, ref delimed) => {
                 let (ref open, ref tts, ref close) = **delimed;
-                try!(word(&mut self.s, parse::token::to_string(&open.token).as_slice()));
+                try!(word(&mut self.s, token_to_string(&open.token).as_slice()));
                 try!(space(&mut self.s));
                 try!(self.print_tts(tts.as_slice()));
                 try!(space(&mut self.s));
-                word(&mut self.s, parse::token::to_string(&close.token).as_slice())
+                word(&mut self.s, token_to_string(&close.token).as_slice())
             },
             ast::TtToken(_, ref tk) => {
-                try!(word(&mut self.s, parse::token::to_string(tk).as_slice()));
+                try!(word(&mut self.s, token_to_string(tk).as_slice()));
                 match *tk {
                     parse::token::DocComment(..) => {
                         hardbreak(&mut self.s)
@@ -1049,10 +1145,9 @@ pub fn print_tt(&mut self, tt: &ast::TokenTree) -> IoResult<()> {
                 try!(word(&mut self.s, ")"));
                 match *separator {
                     Some(ref tk) => {
-                        try!(word(&mut self.s,
-                                  parse::token::to_string(tk).as_slice()));
+                        try!(word(&mut self.s, token_to_string(tk).as_slice()));
                     }
-                    None => ()
+                    None => {},
                 }
                 match kleene_op {
                     ast::ZeroOrMore => word(&mut self.s, "*"),