Merge pull request #22 from alberdingk-thijm/master

Add serde support

Author: thejpster

Cargo.toml

@@ -5,6 +5,7 @@ authors = ["James O'Cull <jocull@delmarsd.com>",
           "Jonathan Pallant <github@thejpster.org.uk>",
           "Hannah McLaughlin <h@mcla.ug>",
           "Danilo Bargen <mail@dbrgn.ch>",
+          "Tim Alberdingk Thijm <tthijm@princeton.edu>",
           ]
 documentation = "https://docs.rs/crate/measurements"
 repository = "https://github.com/thejpster/rust-measurements"
@@ -15,3 +16,6 @@ readme = "README.md"
 
 [features]
 no_std = []
+
+[dependencies]
+serde = { version = "1.0", optional = true, features = ["derive"] }

src/acceleration.rs

@@ -22,6 +22,7 @@ use super::length;
 ///     println!("You accelerated over {} at an average of {}", track, accel);
 ///}
 /// ```
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Copy, Clone, Debug)]
 pub struct Acceleration {
     meters_per_second_per_second: f64,

src/angle.rs

@@ -14,6 +14,7 @@ use super::measurement::*;
 /// let slice = whole_cake / pieces;
 /// println!("Each slice will be {} degrees", slice.as_degrees());
 /// ```
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Copy, Clone, Debug)]
 pub struct Angle {
     radians: f64,

src/angular_velocity.rs

@@ -14,6 +14,7 @@ use ::PI;
 /// let engine_speed = AngularVelocity::from_rpm(9000.0);
 /// let sparks_per_second = (engine_speed.as_hertz() / 2.0) * cylinders;
 /// ```
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Copy, Clone, Debug)]
 pub struct AngularVelocity {
     radians_per_second: f64,

src/area.rs

@@ -18,6 +18,7 @@ const SQUARE_METER_ACRE_FACTOR: f64 = 1.0 / 4046.86;
 /// let acres = football_field.as_acres();
 /// println!("There are {} acres in a football field.", acres);
 /// ```
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Copy, Clone, Debug)]
 pub struct Area {
     square_meters: f64,

src/current.rs

@@ -15,6 +15,7 @@ use super::measurement::*;
 /// let u_a = amperes.as_microamperes();
 /// println!("35 mA correspond to {} A or {} µA", a, u_a);
 /// ```
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Copy, Clone, Debug)]
 pub struct Current {
     amperes: f64,

src/data.rs

@@ -29,6 +29,7 @@ const OCTET_TEBIOCTET_FACTOR: f64 = 1024.0 * 1024.0 * 1024.0 * 1024.0;
 /// let octets = file_size.as_octets();
 /// println!("There are {} octets in that file.", octets);
 /// ```
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Copy, Clone, Debug)]
 pub struct Data {
     octets: f64,

src/energy.rs

@@ -13,6 +13,7 @@ use super::measurement::*;
 /// let energy = Energy::from_kcalories(2500.0);
 /// println!("Some say a health adult male should consume {} per day", energy);
 /// ```
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Copy, Clone, Debug)]
 pub struct Energy {
     joules: f64,

src/force.rs

@@ -28,6 +28,7 @@ pub const DYNES_PER_NEWTON: f64 = 1e5;
 ///     "One metric ton exerts a force of {} due to gravity",
 ///     force);
 /// ```
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Copy, Clone, Debug)]
 pub struct Force {
     newtons: f64,

src/frequency.rs

@@ -29,6 +29,7 @@ pub const HERTZ_TERAHERTZ_FACTOR: f64 = 1e-12;
 /// let radio_station = Frequency::from_hertz(101.5e6);
 /// println!("Tune to {}.", radio_station);
 /// ```
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Copy, Clone, Debug)]
 pub struct Frequency {
     hertz: f64,