Move Segment struct to modules

src/main.rs

@@ -5,16 +5,8 @@ extern crate ansi_term;
 mod modules;
 mod print;
 
-use ansi_term::Style;
 use clap::{App, Arg};
 
-pub struct Segment {
-    style: Style,
-    value: String,
-    prefix: Option<Box<Segment>>,
-    suffix: Option<Box<Segment>>,
-}
-
 fn main() {
     let args = App::new("Starship")
         .about("The cross-platform prompt for astronauts. ✨🚀")

src/modules/char.rs

@@ -1,7 +1,15 @@
-use crate::Segment;
+use super::Segment;
 use ansi_term::{Color, Style};
 use clap::ArgMatches;
 
+/// Prints the prompt character
+/// 
+/// The char segment prints an arrow character in a color dependant on the exit-
+/// code of the last executed command:
+/// - If the exit-code was "0", the arrow will be formatted with `COLOR_SUCCESS`
+/// (green by default)
+/// - If the exit-code was anything else, the arrow will be formatted with
+/// `COLOR_FAILURE` (red by default)
 pub fn segment(args: &ArgMatches) -> Segment {
     const PROMPT_CHAR: &str = "➜ ";
     const COLOR_SUCCESS: Color = Color::Green;
@@ -15,10 +23,9 @@ pub fn segment(args: &ArgMatches) -> Segment {
     }
 
     Segment {
-        prefix: None,
         value: String::from(PROMPT_CHAR),
         style: Style::from(color),
-        suffix: None,
+        ..Default::default()
     }
 }
 

src/modules/mod.rs

@@ -1,7 +1,25 @@
 mod char;
 
-use crate::Segment;
 use clap::ArgMatches;
+use ansi_term::Style;
+
+pub struct Segment {
+    pub style: Style,
+    pub value: String,
+    pub prefix: Option<Box<Segment>>,
+    pub suffix: Option<Box<Segment>>,
+}
+
+impl Default for Segment {
+    fn default() -> Segment {
+        Segment {
+            style: Style::default(),
+            value: String::from(""),
+            prefix: None,
+            suffix: None
+        }
+    }
+}
 
 pub fn handle(module: &str, args: &ArgMatches) -> Segment {
     match module {

src/print.rs

@@ -1,5 +1,5 @@
 use crate::modules;
-use crate::Segment;
+use crate::modules::Segment;
 use clap::ArgMatches;
 
 pub fn prompt(args: ArgMatches) {