Bump edition to 2021 and introduce rustfmt

13 files changed, 1073 insertions, 1078 deletions

diff --git a/Cargo.toml b/Cargo.toml
index b13dc98..0cef797 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,7 @@
 [package]
 name = "kairos"
 version = "0.3.0"
+edition = "2021"
 authors = ["Matthias Beyer <mail@beyermatthias.de>"]
 
 description = "A library on top of chrono to calculate times and dates ergonomically"
diff --git a/examples/main.rs b/examples/main.rs
index 75bc9ff..53a328d 100644
--- a/examples/main.rs
+++ b/examples/main.rs
@@ -4,34 +4,38 @@ use kairos::timetype::TimeType as TT;
 
 fn pretty_print(tt: TT) {
     match tt {
-        TT::Seconds(e)  => println!("{} Seconds", e),
-        TT::Minutes(e)  => println!("{} Minutes", e),
-        TT::Hours(e)    => println!("{} Hours", e),
-        TT::Days(e)     => println!("{} Days", e),
-        TT::Months(e)   => println!("{} Months", e),
-        TT::Years(e)    => println!("{} Years", e),
+        TT::Seconds(e) => println!("{} Seconds", e),
+        TT::Minutes(e) => println!("{} Minutes", e),
+        TT::Hours(e) => println!("{} Hours", e),
+        TT::Days(e) => println!("{} Days", e),
+        TT::Months(e) => println!("{} Months", e),
+        TT::Years(e) => println!("{} Years", e),
         TT::Moment(ndt) => println!("{} ", ndt),
-        other           => println!("Cannot pretty-print: '{:?}'", other),
+        other => println!("Cannot pretty-print: '{:?}'", other),
     }
 }
 
 fn main() {
     // not sure whether this is actually fast or something, but we don't care here, do we?
-    let s = ::std::env::args().skip(1).fold(String::new(), |acc, obj| format!("{} {}", acc, obj));
+    let s = std::env::args()
+        .skip(1)
+        .fold(String::new(), |acc, obj| format!("{} {}", acc, obj));
     let s = s.trim(); // because kairos is not yet whitespace tolerant
 
     match kairos::parser::parse(s) {
         Err(e) => println!("Error -> {:?}", e),
         Ok(kairos::parser::Parsed::TimeType(tt)) => match tt.calculate() {
-            Ok(r)  => pretty_print(r),
+            Ok(r) => pretty_print(r),
             Err(e) => println!("Error calculating: {:?}", e),
         },
-        Ok(kairos::parser::Parsed::Iterator(Ok(ui))) => for elem in ui {
-            match elem {
-                Ok(r)  => pretty_print(r),
-                Err(e) => {
-                    println!("Error calculating: {:?}", e);
-                    ::std::process::exit(1)
+        Ok(kairos::parser::Parsed::Iterator(Ok(ui))) => {
+            for elem in ui {
+                match elem {
+                    Ok(r) => pretty_print(r),
+                    Err(e) => {
+                        println!("Error calculating: {:?}", e);
+                        std::process::exit(1)
+                    },
                 }
             }
         },
diff --git a/rustfmt.toml b/rustfmt.toml
new file mode 100644
index 0000000..7676086
--- /dev/null
+++ b/rustfmt.toml
@@ -0,0 +1,3 @@
+edition = "2021"
+match_block_trailing_comma = true
+max_width = 120
diff --git a/src/error.rs b/src/error.rs
index bb1aa80..979a76b 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -1,12 +1,11 @@
-use timetype::TimeType;
-
 use thiserror::Error;
 
+use crate::timetype::TimeType;
+
 pub type Result<T, E = Error> = std::result::Result<T, E>;
 
 #[derive(Debug, Clone, Eq, PartialEq, Error)]
 pub enum Error {
-
     #[error("Unknown Error")]
     UnknownError,
 
@@ -46,4 +45,3 @@ pub enum Error {
     #[error("Tokenizer error")]
     NomError(String),
 }
-
diff --git a/src/indicator.rs b/src/indicator.rs
index 39bd371..a89b0f0 100644
--- a/src/indicator.rs
+++ b/src/indicator.rs
@@ -1,14 +1,12 @@
 #[cfg(feature = "with-filters")]
+use chrono::Datelike;
+#[cfg(feature = "with-filters")]
 use filters::filter::Filter;
-
 #[cfg(feature = "with-filters")]
 use filters::filter::IntoFilter;
 
 #[cfg(feature = "with-filters")]
-use timetype::TimeType;
-
-#[cfg(feature = "with-filters")]
-use chrono::Datelike;
+use crate::timetype::TimeType;
 
 #[derive(Clone, Eq, PartialEq, Ord, PartialOrd, Debug)]
 pub enum Day {
@@ -24,13 +22,13 @@ pub enum Day {
 impl From<Day> for chrono::Weekday {
     fn from(val: Day) -> Self {
         match val {
-            Day::Monday    => chrono::Weekday::Mon,
-            Day::Tuesday   => chrono::Weekday::Tue,
+            Day::Monday => chrono::Weekday::Mon,
+            Day::Tuesday => chrono::Weekday::Tue,
             Day::Wednesday => chrono::Weekday::Wed,
-            Day::Thursday  => chrono::Weekday::Thu,
-            Day::Friday    => chrono::Weekday::Fri,
-            Day::Saturday  => chrono::Weekday::Sat,
-            Day::Sunday    => chrono::Weekday::Sun,
+            Day::Thursday => chrono::Weekday::Thu,
+            Day::Friday => chrono::Weekday::Fri,
+            Day::Saturday => chrono::Weekday::Sat,
+            Day::Sunday => chrono::Weekday::Sun,
         }
     }
 }
@@ -54,18 +52,18 @@ pub enum Month {
 impl From<Month> for u32 {
     fn from(val: Month) -> Self {
         match val {
-            Month::January   =>  1,
-            Month::February  =>  2,
-            Month::March     =>  3,
-            Month::April     =>  4,
-            Month::May       =>  5,
-            Month::June      =>  6,
-            Month::July      =>  7,
-            Month::August    =>  8,
-            Month::September =>  9,
-            Month::October   => 10,
-            Month::November  => 11,
-            Month::December  => 12,
+            Month::January => 1,
+            Month::February => 2,
+            Month::March => 3,
+            Month::April => 4,
+            Month::May => 5,
+            Month::June => 6,
+            Month::July => 7,
+            Month::August => 8,
+            Month::September => 9,
+            Month::October => 10,
+            Month::November => 11,
+            Month::December => 12,
         }
     }
 }
@@ -76,7 +74,9 @@ pub struct DayFilter(Day);
 #[cfg(feature = "with-filters")]
 impl Filter<TimeType> for DayFilter {
     fn filter(&self, tt: &TimeType) -> bool {
-        tt.get_moment().map(|mom| mom.weekday() == self.0.clone().into()).unwrap_or(false)
+        tt.get_moment()
+            .map(|mom| mom.weekday() == self.0.clone().into())
+            .unwrap_or(false)
     }
 }
 
@@ -87,17 +87,17 @@ impl IntoFilter<TimeType> for Day {
     fn into_filter(self) -> Self::IntoFilt {
         DayFilter(self)
     }
-
 }
 
-
 #[cfg(feature = "with-filters")]
 pub struct MonthFilter(Month);
 
 #[cfg(feature = "with-filters")]
 impl Filter<TimeType> for MonthFilter {
     fn filter(&self, tt: &TimeType) -> bool {
-        tt.get_moment().map(|mom| mom.month() == self.0.clone().into()).unwrap_or(false)
+        tt.get_moment()
+            .map(|mom| mom.month() == self.0.clone().into())
+            .unwrap_or(false)
     }
 }
 
@@ -108,6 +108,4 @@ impl IntoFilter<TimeType> for Month {
     fn into_filter(self) -> Self::IntoFilt {
         MonthFilter(self)
     }
-
 }
-
diff --git a/src/iter.rs b/src/iter.rs
index ee32d6d..d027083 100644
--- a/src/iter.rs
+++ b/src/iter.rs
@@ -3,10 +3,10 @@
 
 use chrono::NaiveDateTime;
 
-use error::Result;
-use error::Error;
-use timetype::TimeType;
-use matcher::Matcher;
+use crate::error::Error;
+use crate::error::Result;
+use crate::matcher::Matcher;
+use crate::timetype::TimeType;
 
 #[derive(Debug)]
 pub struct Iter {
@@ -23,13 +23,12 @@ pub struct Iter {
 // Performing the computation on the yielded `TimeType` instances can be done by transforming this
 // iterator into a `CalculatingIter`.
 impl Iter {
-
     pub fn build(base: NaiveDateTime, inc: TimeType) -> Result<Iter> {
         if !inc.is_a_amount() {
             Err(Error::ArgumentErrorNotAnAmount(inc))
         } else {
             Ok(Iter {
-                base:      TimeType::moment(base),
+                base: TimeType::moment(base),
                 increment: inc,
                 had_first: false,
             })
@@ -53,14 +52,10 @@ impl Iter {
     }
 
     fn recalculate(&mut self) -> Result<()> {
-        self.base
-            .clone()
-            .calculate()
-            .map(|res| {
-                self.base = res;
-            })
+        self.base.clone().calculate().map(|res| {
+            self.base = res;
+        })
     }
-
 }
 
 /// # Warning
@@ -84,17 +79,18 @@ impl Iterator for Iter {
             Some(self.skip().map(|_| self.base.clone()))
         }
     }
-
 }
 
 #[derive(Debug)]
 pub struct FilterIter<I, M>(I, M)
-    where I: Iterator<Item = Result<TimeType>>,
-          M: Matcher;
+where
+    I: Iterator<Item = Result<TimeType>>,
+    M: Matcher;
 
 impl<I, M> FilterIter<I, M>
-    where I: Iterator<Item = Result<TimeType>>,
-          M: Matcher
+where
+    I: Iterator<Item = Result<TimeType>>,
+    M: Matcher,
 {
     fn new(i: I, m: M) -> FilterIter<I, M> {
         FilterIter(i, m)
@@ -102,33 +98,35 @@ impl<I, M> FilterIter<I, M>
 }
 
 impl<I, M> Iterator for FilterIter<I, M>
-    where I: Iterator<Item = Result<TimeType>>,
-          M: Matcher
+where
+    I: Iterator<Item = Result<TimeType>>,
+    M: Matcher,
 {
     type Item = Result<TimeType>;
 
     fn next(&mut self) -> Option<Self::Item> {
         loop {
             match self.0.next() {
-                None        => return None,
+                None => return None,
                 Some(Err(e)) => return Some(Err(e)),
                 Some(Ok(tt)) => match self.1.matches(&tt) {
                     Ok(false) => continue,
-                    Ok(true)  => return Some(Ok(tt)),
-                    Err(e)    => return Some(Err(e)),
-                }
+                    Ok(true) => return Some(Ok(tt)),
+                    Err(e) => return Some(Err(e)),
+                },
             }
         }
     }
 }
 
-pub trait EveryFilter<M: Matcher> : Iterator<Item = Result<TimeType>> + Sized {
+pub trait EveryFilter<M: Matcher>: Iterator<Item = Result<TimeType>> + Sized {
     fn every(self, matcher: M) -> FilterIter<Self, M>;
 }
 
 impl<I, M> EveryFilter<M> for I
-    where I: Iterator<Item = Result<TimeType>>,
-          M: Matcher
+where
+    I: Iterator<Item = Result<TimeType>>,
+    M: Matcher,
 {
     fn every(self, matcher: M) -> FilterIter<Self, M> {
         FilterIter::new(self, matcher)
@@ -137,12 +135,14 @@ impl<I, M> EveryFilter<M> for I
 
 #[derive(Debug)]
 pub struct WithoutIter<I, M>(I, M)
-    where I: Iterator<Item = Result<TimeType>>,
-          M: Matcher;
+where
+    I: Iterator<Item = Result<TimeType>>,
+    M: Matcher;
 
 impl<I, M> WithoutIter<I, M>
-    where I: Iterator<Item = Result<TimeType>>,
-          M: Matcher
+where
+    I: Iterator<Item = Result<TimeType>>,
+    M: Matcher,
 {
     fn new(i: I, m: M) -> WithoutIter<I, M> {
         WithoutIter(i, m)
@@ -150,33 +150,35 @@ impl<I, M> WithoutIter<I, M>
 }
 
 impl<I, M> Iterator for WithoutIter<I, M>
-    where I: Iterator<Item = Result<TimeType>>,
-          M: Matcher
+where
+    I: Iterator<Item = Result<TimeType>>,
+    M: Matcher,
 {
     type Item = Result<TimeType>;
 
     fn next(&mut self) -> Option<Self::Item> {
         loop {
             match self.0.next() {
-                None        => return None,
+                None => return None,
                 Some(Err(e)) => return Some(Err(e)),
                 Some(Ok(tt)) => match self.1.matches(&tt) {
                     Ok(false) => return Some(Ok(tt)),
-                    Ok(true)  => continue,
-                    Err(e)    => return Some(Err(e)),
-                }
+                    Ok(true) => continue,
+                    Err(e) => return Some(Err(e)),
+                },
             }
         }
     }
 }
 
-pub trait WithoutFilter<M: Matcher> : Iterator<Item = Result<TimeType>> + Sized {
+pub trait WithoutFilter<M: Matcher>: Iterator<Item = Result<TimeType>> + Sized {
     fn without(self, matcher: M) -> WithoutIter<Self, M>;
 }
 
 impl<I, M> WithoutFilter<M> for I
-    where I: Iterator<Item = Result<TimeType>>,
-          M: Matcher
+where
+    I: Iterator<Item = Result<TimeType>>,
+    M: Matcher,
 {
     fn without(self, matcher: M) -> WithoutIter<Self, M> {
         WithoutIter::new(self, matcher)
@@ -185,10 +187,12 @@ impl<I, M> WithoutFilter<M> for I
 
 #[derive(Debug)]
 pub struct UntilIter<I>(I, NaiveDateTime)
-    where I: Iterator<Item = Result<TimeType>>;
+where
+    I: Iterator<Item = Result<TimeType>>;
 
 impl<I> UntilIter<I>
-    where I: Iterator<Item = Result<TimeType>>
+where
+    I: Iterator<Item = Result<TimeType>>,
 {
     fn new(i: I, date: NaiveDateTime) -> UntilIter<I> {
         UntilIter(i, date)
@@ -196,36 +200,40 @@ impl<I> UntilIter<I>
 }
 
 impl<I> Iterator for UntilIter<I>
-    where I: Iterator<Item = Result<TimeType>>
+where
+    I: Iterator<Item = Result<TimeType>>,
 {
     type Item = Result<TimeType>;
 
     fn next(&mut self) -> Option<Self::Item> {
         match self.0.next() {
-            None         => None,
+            None => None,
             Some(Err(e)) => Some(Err(e)),
             Some(Ok(tt)) => match tt.calculate() {
                 Err(e) => Some(Err(e)),
-                Ok(tt) => if tt.is_moment() {
-                    if tt.get_moment().unwrap() < &self.1 {
-                        Some(Ok(tt))
+                Ok(tt) => {
+                    if tt.is_moment() {
+                        if tt.get_moment().unwrap() < &self.1 {
+                            Some(Ok(tt))
+                        } else {
+                            None
+                        }
                     } else {
-                        None
+                        Some(Err(Error::ArgumentErrorNotAMoment(tt.name())))
                     }
-                } else {
-                    Some(Err(Error::ArgumentErrorNotAMoment(tt.name())))
-                }
-            }
+                },
+            },
         }
     }
 }
 
-pub trait Until : Iterator<Item = Result<TimeType>> + Sized {
+pub trait Until: Iterator<Item = Result<TimeType>> + Sized {
     fn until(self, ending: NaiveDateTime) -> UntilIter<Self>;
 }
 
 impl<I> Until for I
-    where I: Iterator<Item = Result<TimeType>>
+where
+    I: Iterator<Item = Result<TimeType>>,
 {
     fn until(self, ending: NaiveDateTime) -> UntilIter<Self> {
         UntilIter::new(self, ending)
@@ -234,7 +242,8 @@ impl<I> Until for I
 
 #[derive(Debug)]
 pub struct TimesIter<I>
-    where I: Iterator<Item = Result<TimeType>>
+where
+    I: Iterator<Item = Result<TimeType>>,
 {
     inner: I,
     times: i64,
@@ -242,7 +251,8 @@ pub struct TimesIter<I>
 }
 
 impl<I> TimesIter<I>
-    where I: Iterator<Item = Result<TimeType>>
+where
+    I: Iterator<Item = Result<TimeType>>,
 {
     fn new(i: I, times: i64) -> TimesIter<I> {
         TimesIter {
@@ -254,7 +264,8 @@ impl<I> TimesIter<I>
 }
 
 impl<I> Iterator for TimesIter<I>
-    where I: Iterator<Item = Result<TimeType>>
+where
+    I: Iterator<Item = Result<TimeType>>,
 {
     type Item = Result<TimeType>;
 
@@ -268,12 +279,13 @@ impl<I> Iterator for TimesIter<I>
     }
 }
 
-pub trait Times : Iterator<Item = Result<TimeType>> + Sized {
+pub trait Times: Iterator<Item = Result<TimeType>> + Sized {
     fn times(self, times: i64) -> TimesIter<Self>;
 }
 
 impl<I> Times for I
-    where I: Iterator<Item = Result<TimeType>>
+where
+    I: Iterator<Item = Result<TimeType>>,
 {
     fn times(self, times: i64) -> TimesIter<Self> {
         TimesIter::new(self, times)
@@ -281,10 +293,11 @@ impl<I> Times for I
 }
 
 pub mod extensions {
-    use timetype::TimeType as TT;
+    use crate::error::Error;
+    use crate::error::Result;
+    use crate::timetype::TimeType as TT;
+
     use super::Iter;
-    use error::Result;
-    use error::Error;
 
     pub trait Minutely {
         fn minutely(self, i: i64) -> Result<Iter>;
@@ -298,7 +311,7 @@ pub mod extensions {
         fn daily(self, i: i64) -> Result<Iter>;
     }
 
-    pub trait Weekly : Sized {
+    pub trait Weekly: Sized {
         fn weekly(self, i: i64) -> Result<Iter>;
     }
 
@@ -315,7 +328,6 @@ pub mod extensions {
     }
 
     impl Minutely for TT {
-
         fn minutely(self, i: i64) -> Result<Iter> {
             match self {
                 TT::Moment(mom) => {
@@ -326,11 +338,9 @@ pub mod extensions {
                 _ => Err(Error::ArgumentErrorNotAnAmount(self)),
             }
         }
-
     }
 
     impl Hourly for TT {
-
         fn hourly(self, i: i64) -> Result<Iter> {
             match self {
                 TT::Moment(mom) => {
@@ -341,11 +351,9 @@ pub mod extensions {
                 _ => Err(Error::ArgumentErrorNotAnAmount(self)),
             }
         }
-
     }
 
     impl Daily for TT {
-
         fn daily(self, i: i64) -> Result<Iter> {
             match self {
                 TT::Moment(mom) => {
@@ -356,11 +364,9 @@ pub mod extensions {
                 _ => Err(Error::ArgumentErrorNotAnAmount(self)),
             }
         }
-
     }
 
     impl Weekly for TT {
-
         /// Conveniance function over `Daily::daily( n * 7 )`
         fn weekly(self, i: i64) -> Result<Iter> {
             match self {
@@ -372,11 +378,9 @@ pub mod extensions {
                 _ => Err(Error::ArgumentErrorNotAnAmount(self)),
             }
         }
-
     }
 
     impl Monthly for TT {
-
         fn monthly(self, i: i64) -> Result<Iter> {
             match self {
                 TT::Moment(mom) => {
@@ -387,11 +391,9 @@ pub mod extensions {
                 _ => Err(Error::ArgumentErrorNotAnAmount(self)),
             }
         }
-
     }
 
     impl Yearly for TT {
-
         fn yearly(self, i: i64) -> Result<Iter> {
             match self {
                 TT::Moment(mom) => {
@@ -402,10 +404,8 @@ pub mod extensions {
                 _ => Err(Error::ArgumentErrorNotAnAmount(self)),
             }
         }
-
     }
 
-
     impl Every for TT {
         fn every(self, inc: TT) -> Result<Iter> {
             match self {
@@ -417,10 +417,12 @@ pub mod extensions {
 
     #[cfg(test)]
     mod tests {
-        use super::*;
-        use timetype::TimeType as TT;
         use chrono::NaiveDate as ND;
 
+        use crate::timetype::TimeType as TT;
+
+        use super::*;
+
         fn ymd_hms(y: i32, m: u32, d: u32, h: u32, mi: u32, s: u32) -> TT {
             TT::moment(ND::from_ymd_opt(y, m, d).unwrap().and_hms_opt(h, mi, s).unwrap())
         }
@@ -465,9 +467,9 @@ pub mod extensions {
 
             assert_eq!(ymd_hms(2000, 1, 1, 1, 0, 0), *minutes[0].as_ref().unwrap());
             assert_eq!(ymd_hms(2000, 1, 8, 1, 0, 0), *minutes[1].as_ref().unwrap());
-            assert_eq!(ymd_hms(2000, 1,15, 1, 0, 0), *minutes[2].as_ref().unwrap());
-            assert_eq!(ymd_hms(2000, 1,22, 1, 0, 0), *minutes[3].as_ref().unwrap());
-            assert_eq!(ymd_hms(2000, 1,29, 1, 0, 0), *minutes[4].as_ref().unwrap());
+            assert_eq!(ymd_hms(2000, 1, 15, 1, 0, 0), *minutes[2].as_ref().unwrap());
+            assert_eq!(ymd_hms(2000, 1, 22, 1, 0, 0), *minutes[3].as_ref().unwrap());
+            assert_eq!(ymd_hms(2000, 1, 29, 1, 0, 0), *minutes[4].as_ref().unwrap());
         }
 
         #[test]
@@ -499,15 +501,13 @@ pub mod extensions {
             assert_eq!(ymd_hms(2003, 1, 1, 0, 0, 0), *minutes[3].as_ref().unwrap());
             assert_eq!(ymd_hms(2004, 1, 1, 0, 0, 0), *minutes[4].as_ref().unwrap());
         }
-
     }
-
 }
 
 #[cfg(test)]
 mod type_tests {
-    use super::*;
     use super::extensions::*;
+    use super::*;
 
     #[test]
     fn test_iterator_every_once() {
@@ -515,7 +515,7 @@ mod type_tests {
         let _ = TimeType::today()
             .yearly(1)
             .unwrap()
-            .every(::indicator::Day::Monday);
+            .every(crate::indicator::Day::Monday);
     }
 
     #[test]
@@ -524,25 +524,30 @@ mod type_tests {
         let _ = TimeType::today()
             .yearly(1) // collecting makes us stack-overflow because of the heavy filtering!
             .unwrap()
-            .every(::indicator::Day::Monday)
-            .every(::indicator::Month::January);
+            .every(crate::indicator::Day::Monday)
+            .every(crate::indicator::Month::January);
     }
 }
 
 #[cfg(all(feature = "with-filters", test))]
 mod type_tests_filter_interface {
-    use super::*;
-    use super::extensions::*;
     use filters::filter::Filter;
     use filters::filter::IntoFilter;
 
+    use super::extensions::*;
+    use super::*;
+
     #[test]
     fn test_compile() {
         // This test is solely to check whether this compiles and the API is nice
         let _ = TimeType::today()
             .daily(1)
             .unwrap()
-            .every(::indicator::Day::Monday.into_filter().or(::indicator::Month::January))
+            .every(
+                crate::indicator::Day::Monday
+                    .into_filter()
+                    .or(crate::indicator::Month::January),
+            )
             .take(12)
             .collect::<Vec<_>>();
     }
@@ -554,8 +559,8 @@ mod type_tests_filter_interface {
             .daily(1)
             .unwrap()
             .take(20)
-            .every(::indicator::Day::Monday)
-            .without(::indicator::Day::Monday)
+            .every(crate::indicator::Day::Monday)
+            .without(crate::indicator::Day::Monday)
             .collect::<Vec<_>>();
 
         assert_eq!(0, v.len());
@@ -564,8 +569,8 @@ mod type_tests_filter_interface {
 
 #[cfg(test)]
 mod test_until {
-    use super::*;
     use super::extensions::*;
+    use super::*;
 
     #[test]
     fn test_until() {
@@ -575,11 +580,7 @@ mod test_until {
             .get_moment()
             .unwrap();
 
-        let v = TimeType::today()
-            .daily(1)
-            .unwrap()
-            .until(yesterday)
-            .collect::<Vec<_>>();
+        let v = TimeType::today().daily(1).unwrap().until(yesterday).collect::<Vec<_>>();
 
         assert!(v.is_empty());
     }
@@ -592,11 +593,7 @@ mod test_until {
             .get_moment()
             .unwrap();
 
-        let v = TimeType::today()
-            .daily(1)
-            .unwrap()
-            .until(end)
-            .collect::<Vec<_>>();
+        let v = TimeType::today().daily(1).unwrap().until(end).collect::<Vec<_>>();
 
         assert_eq!(v.len(), 1);
     }
@@ -609,14 +606,8 @@ mod test_until {
             .get_moment()
             .unwrap();
 
-        let v = TimeType::today()
-            .hourly(1)
-            .unwrap()
-            .until(end)
-            .collect::<Vec<_>>();
+        let v = TimeType::today().hourly(1).unwrap().until(end).collect::<Vec<_>>();
 
         assert_eq!(v.len(), 48);
     }
-
 }
-
diff --git a/src/lib.rs b/src/lib.rs
index b9e85c1..5b37f8a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,26 +1,9 @@
-#![recursion_limit="256"]
-
-extern crate thiserror;
-extern crate chrono;
-
-extern crate nom;
-extern crate iso8601;
-
-#[cfg(feature = "with-filters")]
-extern crate filters;
-
-#[cfg(test)]
-extern crate env_logger;
-
-#[cfg(test)]
-#[macro_use]
-extern crate log;
+#![recursion_limit = "256"]
 
 pub mod error;
-pub mod iter;
-pub mod timetype;
 pub mod indicator;
+pub mod iter;
 pub mod matcher;
 pub mod parser;
+pub mod timetype;
 mod util;
-
diff --git a/src/matcher.rs b/src/matcher.rs
index 2676201..965a08c 100644
--- a/src/matcher.rs
+++ b/src/matcher.rs
@@ -1,11 +1,12 @@
-
 use chrono::Datelike;
+#[cfg(feature = "with-filters")]
+use filters::filter::*;
 
-use error::Error;
-use error::Result;
-use indicator::Day;
-use indicator::Month;
-use timetype::TimeType;
+use crate::error::Error;
+use crate::error::Result;
+use crate::indicator::Day;
+use crate::indicator::Month;
+use crate::timetype::TimeType;
 
 /// A trait to extend indicator::* to be able to match them with a TimeType object
 pub trait Matcher {
@@ -13,9 +14,8 @@ pub trait Matcher {
 }
 
 impl Matcher for Day {
-
     fn matches(&self, tt: &TimeType) -> Result<bool> {
-        let this : ::chrono::Weekday = self.clone().into();
+        let this: chrono::Weekday = self.clone().into();
         tt.get_moment()
             .map(|mom| this == mom.weekday())
             .ok_or(Error::ArgumentErrorNotAMoment(tt.name()))
@@ -23,25 +23,20 @@ impl Matcher for Day {
 }
 
 impl Matcher for Month {
-
     fn matches(&self, tt: &TimeType) -> Result<bool> {
-        let this : u32 = self.clone().into();
+        let this: u32 = self.clone().into();
         tt.get_moment()
             .map(|mom| this == mom.month())
             .ok_or(Error::ArgumentErrorNotAMoment(tt.name()))
     }
-
 }
 
 #[cfg(feature = "with-filters")]
-use filters::filter::*;
-
-#[cfg(feature = "with-filters")]
 impl<F> Matcher for F
-    where F: Filter<TimeType>
+where
+    F: Filter<TimeType>,
 {
     fn matches(&self, tt: &TimeType) -> Result<bool> {
         Ok(self.filter(tt))
     }
 }
-
diff --git a/src/parser/iterator.rs b/src/parser/iterator.rs
index 21bf8d5..06ecc2b 100644
--- a/src/parser/iterator.rs
+++ b/src/parser/iterator.rs
@@ -2,26 +2,29 @@ use nom::branch::alt;
 use nom::bytes::complete::tag;
 use nom::character::complete::{multispace0, multispace1};
 use nom::combinator::{complete, map, opt};
-use nom::IResult;
 use nom::sequence::tuple;
+use nom::IResult;
 
-use error::Result;
-use error::Error;
-use parser::timetype::*;
-use timetype::IntoTimeType;
-use timetype;
-use iter;
+use crate::error::Error;
+use crate::error::Result;
+use crate::iter;
+use crate::timetype;
+use crate::timetype::IntoTimeType;
+
+use super::timetype::*;
 
 pub fn iter_spec(i: &[u8]) -> IResult<&[u8], Iterspec> {
     complete(alt((
         map(tag("secondly"), |_| Iterspec::Secondly),
         map(tag("minutely"), |_| Iterspec::Minutely),
-        map(tag("hourly"),   |_| Iterspec::Hourly),
-        map(tag("daily"),    |_| Iterspec::Daily),
-        map(tag("weekly"),   |_| Iterspec::Weekly),
-        map(tag("monthly"),  |_| Iterspec::Monthly),
-        map(tag("yearly"),   |_| Iterspec::Yearly),
-        map(tuple((tag("every"), integer, unit_parser)), |(_, number, unit)| Iterspec::Every(number, unit))
+        map(tag("hourly"), |_| Iterspec::Hourly),
+        map(tag("daily"), |_| Iterspec::Daily),
+        map(tag("weekly"), |_| Iterspec::Weekly),
+        map(tag("monthly"), |_| Iterspec::Monthly),
+        map(tag("yearly"), |_| Iterspec::Yearly),
+        map(tuple((tag("every"), integer, unit_parser)), |(_, number, unit)| {
+            Iterspec::Every(number, unit)
+        }),
     )))(i)
 }
 
@@ -41,25 +44,31 @@ pub fn until_spec(i: &[u8]) -> IResult<&[u8], UntilSpec> {
     complete(alt((
         map(
             tuple((tag("until"), multispace1, exact_date_parser)),
-            |(_, _, exact)| UntilSpec::Exact(exact)
+            |(_, _, exact)| UntilSpec::Exact(exact),
         ),
-        map(
-            tuple((integer, multispace1, tag("times"))),
-            |(num, _, _)| UntilSpec::Times(num)
-        )
+        map(tuple((integer, multispace1, tag("times"))), |(num, _, _)| {
+            UntilSpec::Times(num)
+        }),
     )))(i)
 }
 
 #[derive(Debug, PartialEq, Eq)]
 pub enum UntilSpec {
     Exact(ExactDate),
-    Times(i64)
+    Times(i64),
 }
 
 pub fn iterator(i: &[u8]) -> IResult<&[u8], Iterator> {
     map(
-        tuple((multispace0, date, multispace0, iter_spec, multispace0, opt(complete(until_spec)))),
-        |(_, d, _, spec, _, until)| { Iterator(d, spec, until) },
+        tuple((
+            multispace0,
+            date,
+            multispace0,
+            iter_spec,
+            multispace0,
+            opt(complete(until_spec)),
+        )),
+        |(_, d, _, spec, _, until)| Iterator(d, spec, until),
     )(i)
 }
 
@@ -74,37 +83,38 @@ impl Iterator {
         let unit_to_amount = |i, unit| match unit {
             Unit::Second => timetype::TimeType::seconds(i),
             Unit::Minute => timetype::TimeType::minutes(i),
-            Unit::Hour   => timetype::TimeType::hours(i),
-            Unit::Day    => timetype::TimeType::days(i),
-            Unit::Week   => timetype::TimeType::weeks(i),
-            Unit::Month  => timetype::TimeType::months(i),
-            Unit::Year   => timetype::TimeType::years(i),
+            Unit::Hour => timetype::TimeType::hours(i),
+            Unit::Day => timetype::TimeType::days(i),
+            Unit::Week => timetype::TimeType::weeks(i),
+            Unit::Month => timetype::TimeType::months(i),
+            Unit::Year => timetype::TimeType::years(i),
         };
 
         let recur = match self.1 {
             Iterspec::Every(i, unit) => unit_to_amount(i, unit),
             Iterspec::Secondly => unit_to_amount(1, Unit::Second),
             Iterspec::Minutely => unit_to_amount(1, Unit::Minute),
-            Iterspec::Hourly   => unit_to_amount(1, Unit::Hour),
-            Iterspec::Daily    => unit_to_amount(1, Unit::Day),
-            Iterspec::Weekly   => unit_to_amount(1, Unit::Week),
-            Iterspec::Monthly  => unit_to_amount(1, Unit::Month),
-            Iterspec::Yearly   => unit_to_amount(1, Unit::Year),
+            Iterspec::Hourly => unit_to_amount(1, Unit::Hour),
+            Iterspec::Daily => unit_to_amount(1, Unit::Day),
+            Iterspec::Weekly => unit_to_amount(1, Unit::Week),
+            Iterspec::Monthly => unit_to_amount(1, Unit::Month),
+            Iterspec::Yearly => unit_to_amount(1, Unit::Year),
         };
 
-        let into_ndt = |e: timetype::TimeType| e.calculate()?
-            .get_moment()
-            .ok_or(Error::NotADateInsideIterator)
-            .map_err(Error::from)
-            .map(Clone::clone);
+        let into_ndt = |e: timetype::TimeType| {
+            e.calculate()?
+                .get_moment()
+                .ok_or(Error::NotADateInsideIterator)
+                .map_err(Error::from)
+                .map(Clone::clone)
+        };
 
         match self.2 {
             Some(UntilSpec::Exact(e)) => {
                 let base = into_ndt(self.0.into_timetype()?)?;
-                let e    = into_ndt(e.into_timetype()?)?;
+                let e = into_ndt(e.into_timetype()?)?;
 
-                iter::Iter::build(base, recur)
-                    .map(|it| UserIterator::UntilIterator(it.until(e)))
+                iter::Iter::build(base, recur).map(|it| UserIterator::UntilIterator(it.until(e))