libsyntax: use `#[deriving(Copy)]`

2 files changed, 7 insertions, 17 deletions

diff --git a/src/libsyntax/print/pp.rs b/src/libsyntax/print/pp.rs
index c4e040a0f7c..bfa47a46e74 100644
--- a/src/libsyntax/print/pp.rs
+++ b/src/libsyntax/print/pp.rs
@@ -66,30 +66,24 @@ pub use self::Token::*;
 use std::io;
 use std::string;
 
-#[deriving(Clone, PartialEq)]
+#[deriving(Clone, Copy, PartialEq)]
 pub enum Breaks {
     Consistent,
     Inconsistent,
 }
 
-impl Copy for Breaks {}
-
-#[deriving(Clone)]
+#[deriving(Clone, Copy)]
 pub struct BreakToken {
     offset: int,
     blank_space: int
 }
 
-impl Copy for BreakToken {}
-
-#[deriving(Clone)]
+#[deriving(Clone, Copy)]
 pub struct BeginToken {
     offset: int,
     breaks: Breaks
 }
 
-impl Copy for BeginToken {}
-
 #[deriving(Clone)]
 pub enum Token {
     String(string::String, int),
@@ -153,20 +147,18 @@ pub fn buf_str(toks: Vec<Token>,
     return s.into_string();
 }
 
+#[deriving(Copy)]
 pub enum PrintStackBreak {
     Fits,
     Broken(Breaks),
 }
 
-impl Copy for PrintStackBreak {}
-
+#[deriving(Copy)]
 pub struct PrintStackElem {
     offset: int,
     pbreak: PrintStackBreak
 }
 
-impl Copy for PrintStackElem {}
-
 static SIZE_INFINITY: int = 0xffff;
 
 pub fn mk_printer(out: Box<io::Writer+'static>, linewidth: uint) -> Printer {
diff --git a/src/libsyntax/print/pprust.rs b/src/libsyntax/print/pprust.rs
index 1dd61a5ce19..d2cc0cba317 100644
--- a/src/libsyntax/print/pprust.rs
+++ b/src/libsyntax/print/pprust.rs
@@ -45,19 +45,17 @@ pub trait PpAnn {
     fn post(&self, _state: &mut State, _node: AnnNode) -> IoResult<()> { Ok(()) }
 }
 
+#[deriving(Copy)]
 pub struct NoAnn;
 
-impl Copy for NoAnn {}
-
 impl PpAnn for NoAnn {}
 
+#[deriving(Copy)]
 pub struct CurrentCommentAndLiteral {
     cur_cmnt: uint,
     cur_lit: uint,
 }
 
-impl Copy for CurrentCommentAndLiteral {}
-
 pub struct State<'a> {
     pub s: pp::Printer,
     cm: Option<&'a CodeMap>,