Implement FromStr trait for Config

src/types.rs

@@ -1,7 +1,9 @@
 //! Internal types used to represent a configuration and corresponding primitives to browse it
 
 use std::collections::HashMap;
+use std::str::FromStr;
 use std::string::ToString;
+use ::error::ConfigError;
 
 /// The top-level `Config` type that represents a configuration
 #[derive(PartialEq)]
@@ -276,6 +278,18 @@ impl Config {
  }
 }
 
+// Implement `FromStr` for `Config` so it can be constructed using `parse()` method
+// on the string slice.
+impl FromStr for Config {
+ type Err = ConfigError;
+
+ fn from_str(s: &str) -> Result<Self, Self::Err> {
+ use ::reader;
+
+ reader::from_str(s)
+ }
+}
+
 impl Setting {
  /// Creates a new setting with a given name and value
  /// # Examples 
@@ -718,4 +732,11 @@ mod test {
  value = ScalarValue::Str("this is a string".to_string());
  assert_eq!(value.to_string(), "this is a string");
  }
+
+ #[test]
+ fn parse_config_from_str_slice() {
+ let config: Config = "answer=42;".parse().unwrap();
+ assert!(config.lookup_integer32("answer").is_some());
+ assert_eq!(config.lookup_integer32("answer").unwrap().to_string(), "42".to_string());
+ }
 }