Implement `Clone` for a large number of iterators & other adaptors.

It's useful to be able to save state.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/libregex/re.rs b/src/libregex/re.rs
index 4383192edaf..51c23463155 100644
--- a/src/libregex/re.rs
+++ b/src/libregex/re.rs
@@ -539,6 +539,7 @@ impl Regex {
 
 }
 
+#[deriving(Clone)]
 pub enum NamesIter<'a> {
     NamesIterNative(::std::slice::Iter<'a, Option<&'static str>>),
     NamesIterDynamic(::std::slice::Iter<'a, Option<String>>)
@@ -595,6 +596,7 @@ impl<F> Replacer for F where F: FnMut(&Captures) -> String {
 ///
 /// `'r` is the lifetime of the compiled expression and `'t` is the lifetime
 /// of the string being split.
+#[deriving(Clone)]
 pub struct RegexSplits<'r, 't> {
     finder: FindMatches<'r, 't>,
     last: uint,
@@ -628,6 +630,7 @@ impl<'r, 't> Iterator<&'t str> for RegexSplits<'r, 't> {
 ///
 /// `'r` is the lifetime of the compiled expression and `'t` is the lifetime
 /// of the string being split.
+#[deriving(Clone)]
 pub struct RegexSplitsN<'r, 't> {
     splits: RegexSplits<'r, 't>,
     cur: uint,
@@ -791,6 +794,7 @@ impl<'t> Captures<'t> {
 /// expression.
 ///
 /// `'t` is the lifetime of the matched text.
+#[deriving(Clone)]
 pub struct SubCaptures<'t> {
     idx: uint,
     caps: &'t Captures<'t>,
@@ -813,6 +817,7 @@ impl<'t> Iterator<&'t str> for SubCaptures<'t> {
 /// Positions are byte indices in terms of the original string matched.
 ///
 /// `'t` is the lifetime of the matched text.
+#[deriving(Clone)]
 pub struct SubCapturesPos<'t> {
     idx: uint,
     caps: &'t Captures<'t>,
@@ -836,6 +841,7 @@ impl<'t> Iterator<Option<(uint, uint)>> for SubCapturesPos<'t> {
 ///
 /// `'r` is the lifetime of the compiled expression and `'t` is the lifetime
 /// of the matched string.
+#[deriving(Clone)]
 pub struct FindCaptures<'r, 't> {
     re: &'r Regex,
     search: &'t str,
@@ -878,6 +884,7 @@ impl<'r, 't> Iterator<Captures<'t>> for FindCaptures<'r, 't> {
 ///
 /// `'r` is the lifetime of the compiled expression and `'t` is the lifetime
 /// of the matched string.
+#[deriving(Clone)]
 pub struct FindMatches<'r, 't> {
     re: &'r Regex,
     search: &'t str,