Use 'Cow' to remove unnecessary allocations

2 files changed, 4 insertions, 2 deletions

diff --git a/src/file/json.rs b/src/file/json.rs
index 05af065..165bdbe 100644
--- a/src/file/json.rs
+++ b/src/file/json.rs
@@ -2,6 +2,7 @@ use serde_json;
 
 use source::Source;
 use std::error::Error;
+use std::borrow::Cow;
 use value::Value;
 
 pub struct Content {
@@ -20,7 +21,7 @@ impl Content {
 
 fn from_json_value(value: &serde_json::Value) -> Option<Value> {
     match *value {
-        serde_json::Value::String(ref value) => Some(Value::String(value.clone())),
+        serde_json::Value::String(ref value) => Some(Value::String(Cow::Borrowed(value))),
 
         serde_json::Value::Number(ref value) => {
             if let Some(value) = value.as_i64() {
diff --git a/src/file/toml.rs b/src/file/toml.rs
index 9e4b170..2fd5bd3 100644
--- a/src/file/toml.rs
+++ b/src/file/toml.rs
@@ -1,5 +1,6 @@
 use toml;
 use source::Source;
+use std::borrow::Cow;
 use std::error::Error;
 use value::Value;
 
@@ -21,7 +22,7 @@ impl Content {
 
 fn from_toml_value(value: &toml::Value) -> Option<Value> {
     match *value {
-        toml::Value::String(ref value) => Some(Value::String(value.clone())),
+        toml::Value::String(ref value) => Some(Value::String(Cow::Borrowed(value))),
         toml::Value::Float(value) => Some(Value::Float(value)),
         toml::Value::Integer(value) => Some(Value::Integer(value)),
         toml::Value::Boolean(value) => Some(Value::Boolean(value)),