From c1a369f44762045e65989caa9491e153d1f358e6 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Mon, 17 Dec 2018 17:45:35 -0800
Subject: Run `cargo fmt`

---
 src/ser.rs | 560 ++++++++++++++++++++++++++++++++++---------------------------
 1 file changed, 316 insertions(+), 244 deletions(-)

(limited to 'src/ser.rs')

diff --git a/src/ser.rs b/src/ser.rs
index e1fe1a2..60e5b50 100644
--- a/src/ser.rs
+++ b/src/ser.rs
@@ -32,8 +32,8 @@ use std::fmt::{self, Write};
 use std::marker;
 use std::rc::Rc;
 
-use serde::ser;
 use datetime;
+use serde::ser;
 
 /// Serialize the given data structure as a TOML byte vector.
 ///
@@ -41,7 +41,8 @@ use datetime;
 /// fail, if `T` contains a map with non-string keys, or if `T` attempts to
 /// serialize an unsupported datatype such as an enum, tuple, or tuple struct.
 pub fn to_vec<T: ?Sized>(value: &T) -> Result<Vec<u8>, Error>
-    where T: ser::Serialize,
+where
+    T: ser::Serialize,
 {
     to_string(value).map(|e| e.into_bytes())
 }
@@ -87,7 +88,8 @@ pub fn to_vec<T: ?Sized>(value: &T) -> Result<Vec<u8>, Error>
 /// }
 /// ```
 pub fn to_string<T: ?Sized>(value: &T) -> Result<String, Error>
-    where T: ser::Serialize,
+where
+    T: ser::Serialize,
 {
     let mut dst = String::with_capacity(128);
     value.serialize(&mut Serializer::new(&mut dst))?;
@@ -99,7 +101,8 @@ pub fn to_string<T: ?Sized>(value: &T) -> Result<String, Error>
 /// This is identical to `to_string` except the output string has a more
 /// "pretty" output. See `Serializer::pretty` for more details.
 pub fn to_string_pretty<T: ?Sized>(value: &T) -> Result<String, Error>
-    where T: ser::Serialize,
+where
+    T: ser::Serialize,
 {
     let mut dst = String::with_capacity(128);
     value.serialize(&mut Serializer::pretty(&mut dst))?;
@@ -177,9 +180,7 @@ struct StringSettings {
 
 impl StringSettings {
     fn pretty() -> StringSettings {
-        StringSettings {
-            literal: true,
-        }
+        StringSettings { literal: true }
     }
 }
 
@@ -239,7 +240,7 @@ pub enum SerializeTable<'a: 'b, 'b> {
         key: String,
         first: Cell<bool>,
         table_emitted: Cell<bool>,
-    }
+    },
 }
 
 impl<'a> Serializer<'a> {
@@ -333,13 +334,13 @@ impl<'a> Serializer<'a> {
     /// """
     /// ```
     pub fn pretty_string_literal(&mut self, value: bool) -> &mut Self {
-        let use_default = if let &mut Some(ref mut s) = &mut Rc::get_mut(&mut self.settings)
-                .unwrap().string {
-            s.literal = value;
-            false
-        } else {
-            true
-        };
+        let use_default =
+            if let &mut Some(ref mut s) = &mut Rc::get_mut(&mut self.settings).unwrap().string {
+                s.literal = value;
+                false
+            } else {
+                true
+            };
 
         if use_default {
             let mut string = StringSettings::pretty();
@@ -389,13 +390,13 @@ impl<'a> Serializer<'a> {
     ///
     /// See `Serializer::pretty_array` for more details.
     pub fn pretty_array_indent(&mut self, value: usize) -> &mut Self {
-        let use_default = if let &mut Some(ref mut a) = &mut Rc::get_mut(&mut self.settings)
-                .unwrap().array {
-            a.indent = value;
-            false
-        } else {
-            true
-        };
+        let use_default =
+            if let &mut Some(ref mut a) = &mut Rc::get_mut(&mut self.settings).unwrap().array {
+                a.indent = value;
+                false
+            } else {
+                true
+            };
 
         if use_default {
             let mut array = ArraySettings::pretty();
@@ -409,13 +410,13 @@ impl<'a> Serializer<'a> {
     ///
     /// See `Serializer::pretty_array` for more details.
     pub fn pretty_array_trailing_comma(&mut self, value: bool) -> &mut Self {
-        let use_default = if let &mut Some(ref mut a) = &mut Rc::get_mut(&mut self.settings)
-                .unwrap().array {
-            a.trailing_comma = value;
-            false
-        } else {
-            true
-        };
+        let use_default =
+            if let &mut Some(ref mut a) = &mut Rc::get_mut(&mut self.settings).unwrap().array {
+                a.trailing_comma = value;
+                false
+            } else {
+                true
+            };
 
         if use_default {
             let mut array = ArraySettings::pretty();
@@ -425,9 +426,7 @@ impl<'a> Serializer<'a> {
         self
     }
 
-    fn display<T: fmt::Display>(&mut self,
-                                t: T,
-                                type_: &'static str) -> Result<(), Error> {
+    fn display<T: fmt::Display>(&mut self, t: T, type_: &'static str) -> Result<(), Error> {
         self.emit_key(type_)?;
         drop(write!(self.dst, "{}", t));
         if let State::Table { .. } = self.state {
@@ -446,16 +445,26 @@ impl<'a> Serializer<'a> {
     fn _emit_key(&mut self, state: &State) -> Result<(), Error> {
         match *state {
             State::End => Ok(()),
-            State::Array { parent, first, type_, len } => {
+            State::Array {
+                parent,
+                first,
+                type_,
+                len,
+            } => {
                 assert!(type_.get().is_some());
                 if first.get() {
                     self._emit_key(parent)?;
                 }
                 self.emit_array(first, len)
             }
-            State::Table { parent, first, table_emitted, key } => {
+            State::Table {
+                parent,
+                first,
+                table_emitted,
+                key,
+            } => {
                 if table_emitted.get() {
-                    return Err(Error::ValueAfterTable)
+                    return Err(Error::ValueAfterTable);
                 }
                 if first.get() {
                     self.emit_table_header(parent)?;
@@ -476,7 +485,7 @@ impl<'a> Serializer<'a> {
                 } else {
                     self.dst.push_str(", ")
                 }
-            },
+            }
             (_, &Some(ref a)) => {
                 if first.get() {
                     self.dst.push_str("[\n")
@@ -486,7 +495,7 @@ impl<'a> Serializer<'a> {
                 for _ in 0..a.indent {
                     self.dst.push_str(" ");
                 }
-            },
+            }
         }
         Ok(())
     }
@@ -498,7 +507,7 @@ impl<'a> Serializer<'a> {
         };
         if let Some(prev) = prev.get() {
             if prev != type_ {
-                return Err(Error::ArrayMixedType)
+                return Err(Error::ArrayMixedType);
             }
         } else {
             prev.set(Some(type_));
@@ -507,14 +516,9 @@ impl<'a> Serializer<'a> {
     }
 
     fn escape_key(&mut self, key: &str) -> Result<(), Error> {
-        let ok = key.chars().all(|c| {
-            match c {
-                'a' ... 'z' |
-                'A' ... 'Z' |
-                '0' ... '9' |
-                '-' | '_' => true,
-                _ => false,
-            }
+        let ok = key.chars().all(|c| match c {
+            'a'...'z' | 'A'...'Z' | '0'...'9' | '-' | '_' => true,
+            _ => false,
         });
         if ok {
             drop(write!(self.dst, "{}", key));
@@ -570,7 +574,7 @@ impl<'a> Serializer<'a> {
                         found_singles = 0
                     }
                     match ch {
-                        '\t' => {},
+                        '\t' => {}
                         '\n' => ty = Type::NewlineTripple,
                         // note that the following are invalid: \b \f \r
                         c if c < '\u{1f}' => can_be_pretty = false, // Invalid control character
@@ -606,8 +610,9 @@ impl<'a> Serializer<'a> {
 
         let repr = if !is_key && self.settings.string.is_some() {
             match (&self.settings.string, do_pretty(value)) {
-                (&Some(StringSettings { literal: false, .. }), Repr::Literal(_, ty)) =>
-                    Repr::Std(ty),
+                (&Some(StringSettings { literal: false, .. }), Repr::Literal(_, ty)) => {
+                    Repr::Std(ty)
+                }
                 (_, r @ _) => r,
             }
         } else {
@@ -626,26 +631,23 @@ impl<'a> Serializer<'a> {
                     Type::OnelineSingle => self.dst.push('\''),
                     _ => self.dst.push_str("'''"),
                 }
-            },
+            }
             Repr::Std(ty) => {
                 match ty {
-                    Type::NewlineTripple =>  self.dst.push_str("\"\"\"\n"),
+                    Type::NewlineTripple => self.dst.push_str("\"\"\"\n"),
                     // note: OnelineTripple can happen if do_pretty wants to do
                     // '''it's one line'''
                     // but settings.string.literal == false
-                    Type::OnelineSingle |
-                        Type::OnelineTripple =>  self.dst.push('"'),
+                    Type::OnelineSingle | Type::OnelineTripple => self.dst.push('"'),
                 }
                 for ch in value.chars() {
                     match ch {
                         '\u{8}' => self.dst.push_str("\\b"),
                         '\u{9}' => self.dst.push_str("\\t"),
-                        '\u{a}' => {
-                            match ty {
-                                Type::NewlineTripple =>  self.dst.push('\n'),
-                                Type::OnelineSingle =>  self.dst.push_str("\\n"),
-                                _ => unreachable!(),
-                            }
+                        '\u{a}' => match ty {
+                            Type::NewlineTripple => self.dst.push('\n'),
+                            Type::OnelineSingle => self.dst.push_str("\\n"),
+                            _ => unreachable!(),
                         },
                         '\u{c}' => self.dst.push_str("\\f"),
                         '\u{d}' => self.dst.push_str("\\r"),
@@ -656,10 +658,10 @@ impl<'a> Serializer<'a> {
                     }
                 }
                 match ty {
-                    Type::NewlineTripple =>  self.dst.push_str("\"\"\""),
+                    Type::NewlineTripple => self.dst.push_str("\"\"\""),
                     Type::OnelineSingle | Type::OnelineTripple => self.dst.push('"'),
                 }
-            },
+            }
         }
         Ok(())
     }
@@ -684,7 +686,11 @@ impl<'a> Serializer<'a> {
             if !first.get() {
                 break;
             }
-            if let State::Array { parent: &State::Table {..}, ..} = *parent {
+            if let State::Array {
+                parent: &State::Table { .. },
+                ..
+            } = *parent
+            {
                 self.emit_table_header(parent)?;
                 break;
             }
@@ -697,7 +703,7 @@ impl<'a> Serializer<'a> {
                     // table in the document.
                     self.dst.push('\n');
                 }
-            },
+            }
             State::Array { parent, first, .. } => {
                 if !first.get() {
                     // Always newline if we are not the first item in the
@@ -709,7 +715,7 @@ impl<'a> Serializer<'a> {
                         self.dst.push('\n');
                     }
                 }
-            },
+            }
             _ => {}
         }
         self.dst.push_str("[");
@@ -728,9 +734,14 @@ impl<'a> Serializer<'a> {
         match *key {
             State::Array { parent, .. } => self.emit_key_part(parent),
             State::End => Ok(true),
-            State::Table { key, parent, table_emitted, .. } => {
+            State::Table {
+                key,
+                parent,
+                table_emitted,
+                ..
+            } => {
                 table_emitted.set(true);
-                let first  = self.emit_key_part(parent)?;
+                let first = self.emit_key_part(parent)?;
                 if !first {
                     self.dst.push_str(".");
                 }
@@ -841,7 +852,8 @@ impl<'a, 'b> ser::Serializer for &'b mut Serializer<'a> {
     }
 
     fn serialize_some<T: ?Sized>(self, value: &T) -> Result<(), Self::Error>
-        where T: ser::Serialize
+    where
+        T: ser::Serialize,
     {
         value.serialize(self)
     }
@@ -850,40 +862,44 @@ impl<'a, 'b> ser::Serializer for &'b mut Serializer<'a> {
         Err(Error::UnsupportedType)
     }
 
-    fn serialize_unit_struct(self,
-                             _name: &'static str)
-                             -> Result<(), Self::Error> {
+    fn serialize_unit_struct(self, _name: &'static str) -> Result<(), Self::Error> {
         Err(Error::UnsupportedType)
     }
 
-    fn serialize_unit_variant(self,
-                              _name: &'static str,
-                              _variant_index: u32,
-                              variant: &'static str)
-                              -> Result<(), Self::Error> {
+    fn serialize_unit_variant(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        variant: &'static str,
+    ) -> Result<(), Self::Error> {
         self.serialize_str(variant)
     }
 
-    fn serialize_newtype_struct<T: ?Sized>(self, _name: &'static str, value: &T)
-                                           -> Result<(), Self::Error>
-        where T: ser::Serialize,
+    fn serialize_newtype_struct<T: ?Sized>(
+        self,
+        _name: &'static str,
+        value: &T,
+    ) -> Result<(), Self::Error>
+    where
+        T: ser::Serialize,
     {
         value.serialize(self)
     }
 
-    fn serialize_newtype_variant<T: ?Sized>(self,
-                                            _name: &'static str,
-                                            _variant_index: u32,
-                                            _variant: &'static str,
-                                            _value: &T)
-                                            -> Result<(), Self::Error>
-        where T: ser::Serialize,
+    fn serialize_newtype_variant<T: ?Sized>(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        _variant: &'static str,
+        _value: &T,
+    ) -> Result<(), Self::Error>
+    where
+        T: ser::Serialize,
     {
         Err(Error::UnsupportedType)
     }
 
-    fn serialize_seq(self, len: Option<usize>)
-                     -> Result<Self::SerializeSeq, Self::Error> {
+    fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
         self.array_type("array")?;
         Ok(SerializeSeq {
             ser: self,
@@ -893,27 +909,29 @@ impl<'a, 'b> ser::Serializer for &'b mut Serializer<'a> {
         })
     }
 
-    fn serialize_tuple(self, len: usize)
-                       -> Result<Self::SerializeTuple, Self::Error> {
+    fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple, Self::Error> {
         self.serialize_seq(Some(len))
     }
 
-    fn serialize_tuple_struct(self, _name: &'static str, len: usize)
-                              -> Result<Self::SerializeTupleStruct, Self::Error> {
+    fn serialize_tuple_struct(
+        self,
+        _name: &'static str,
+        len: usize,
+    ) -> Result<Self::SerializeTupleStruct, Self::Error> {
         self.serialize_seq(Some(len))
     }
 
-    fn serialize_tuple_variant(self,
-                               _name: &'static str,
-                               _variant_index: u32,
-                               _variant: &'static str,
-                               len: usize)
-                               -> Result<Self::SerializeTupleVariant, Self::Error> {
+    fn serialize_tuple_variant(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        _variant: &'static str,
+        len: usize,
+    ) -> Result<Self::SerializeTupleVariant, Self::Error> {
         self.serialize_seq(Some(len))
     }
 
-    fn serialize_map(self, _len: Option<usize>)
-                     -> Result<Self::SerializeMap, Self::Error> {
+    fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
         self.array_type("table")?;
         Ok(SerializeTable::Table {
             ser: self,
@@ -923,8 +941,11 @@ impl<'a, 'b> ser::Serializer for &'b mut Serializer<'a> {
         })
     }
 
-    fn serialize_struct(self, name: &'static str, _len: usize)
-                        -> Result<Self::SerializeStruct, Self::Error> {
+    fn serialize_struct(
+        self,
+        name: &'static str,
+        _len: usize,
+    ) -> Result<Self::SerializeStruct, Self::Error> {
         if name == datetime::NAME {
             self.array_type("datetime")?;
             Ok(SerializeTable::Datetime(self))
@@ -939,12 +960,13 @@ impl<'a, 'b> ser::Serializer for &'b mut Serializer<'a> {
         }
     }
 
-    fn serialize_struct_variant(self,
-                                _name: &'static str,
-                                _variant_index: u32,
-                                _variant: &'static str,
-                                _len: usize)
-                                -> Result<Self::SerializeStructVariant, Self::Error> {
+    fn serialize_struct_variant(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        _variant: &'static str,
+        _len: usize,
+    ) -> Result<Self::SerializeStructVariant, Self::Error> {
         Err(Error::UnsupportedType)
     }
 }
@@ -954,7 +976,8 @@ impl<'a, 'b> ser::SerializeSeq for SerializeSeq<'a, 'b> {
     type Error = Error;
 
     fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
-        where T: ser::Serialize,
+    where
+        T: ser::Serialize,
     {
         value.serialize(&mut Serializer {
             dst: &mut *self.ser.dst,
@@ -973,19 +996,17 @@ impl<'a, 'b> ser::SerializeSeq for SerializeSeq<'a, 'b> {
     fn end(self) -> Result<(), Error> {
         match self.type_.get() {
             Some("table") => return Ok(()),
-            Some(_) => {
-                match (self.len, &self.ser.settings.array) {
-                    (Some(0...1), _) | (_, &None) => {
-                        self.ser.dst.push_str("]");
-                    },
-                    (_, &Some(ref a)) => {
-                        if a.trailing_comma {
-                            self.ser.dst.push_str(",");
-                        }
-                        self.ser.dst.push_str("\n]");
-                    },
+            Some(_) => match (self.len, &self.ser.settings.array) {
+                (Some(0...1), _) | (_, &None) => {
+                    self.ser.dst.push_str("]");
                 }
-            }
+                (_, &Some(ref a)) => {
+                    if a.trailing_comma {
+                        self.ser.dst.push_str(",");
+                    }
+                    self.ser.dst.push_str("\n]");
+                }
+            },
             None => {
                 assert!(self.first.get());
                 self.ser.emit_key("array")?;
@@ -1004,7 +1025,8 @@ impl<'a, 'b> ser::SerializeTuple for SerializeSeq<'a, 'b> {
     type Error = Error;
 
     fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
-        where T: ser::Serialize,
+    where
+        T: ser::Serialize,
     {
         ser::SerializeSeq::serialize_element(self, value)
     }
@@ -1019,7 +1041,8 @@ impl<'a, 'b> ser::SerializeTupleVariant for SerializeSeq<'a, 'b> {
     type Error = Error;
 
     fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
-        where T: ser::Serialize,
+    where
+        T: ser::Serialize,
     {
         ser::SerializeSeq::serialize_element(self, value)
     }
@@ -1034,7 +1057,8 @@ impl<'a, 'b> ser::SerializeTupleStruct for SerializeSeq<'a, 'b> {
     type Error = Error;
 
     fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
-        where T: ser::Serialize,
+    where
+        T: ser::Serialize,
     {
         ser::SerializeSeq::serialize_element(self, value)
     }
@@ -1049,7 +1073,8 @@ impl<'a, 'b> ser::SerializeMap for SerializeTable<'a, 'b> {
     type Error = Error;
 
     fn serialize_key<T: ?Sized>(&mut self, input: &T) -> Result<(), Error>
-        where T: ser::Serialize,
+    where
+        T: ser::Serialize,
     {
         match *self {
             SerializeTable::Datetime(_) => panic!(), // shouldn't be possible
@@ -1062,7 +1087,8 @@ impl<'a, 'b> ser::SerializeMap for SerializeTable<'a, 'b> {
     }
 
     fn serialize_value<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
-        where T: ser::Serialize,
+    where
+        T: ser::Serialize,
     {
         match *self {
             SerializeTable::Datetime(_) => panic!(), // shouldn't be possible
@@ -1085,7 +1111,7 @@ impl<'a, 'b> ser::SerializeMap for SerializeTable<'a, 'b> {
                 });
                 match res {
                     Ok(()) => first.set(false),
-                    Err(Error::UnsupportedNone) => {},
+                    Err(Error::UnsupportedNone) => {}
                     Err(e) => return Err(e),
                 }
             }
@@ -1096,7 +1122,7 @@ impl<'a, 'b> ser::SerializeMap for SerializeTable<'a, 'b> {
     fn end(self) -> Result<(), Error> {
         match self {
             SerializeTable::Datetime(_) => panic!(), // shouldn't be possible
-            SerializeTable::Table { ser, first, ..  } => {
+            SerializeTable::Table { ser, first, .. } => {
                 if first.get() {
                     let state = ser.state.clone();
                     ser.emit_table_header(&state)?;
@@ -1111,16 +1137,16 @@ impl<'a, 'b> ser::SerializeStruct for SerializeTable<'a, 'b> {
     type Ok = ();
     type Error = Error;
 
-    fn serialize_field<T: ?Sized>(&mut self, key: &'static str, value: &T)
-                                  -> Result<(), Error>
-        where T: ser::Serialize,
+    fn serialize_field<T: ?Sized>(&mut self, key: &'static str, value: &T) -> Result<(), Error>
+    where
+        T: ser::Serialize,
     {
         match *self {
             SerializeTable::Datetime(ref mut ser) => {
                 if key == datetime::FIELD {
                     value.serialize(DateStrEmitter(&mut *ser))?;
                 } else {
-                    return Err(Error::DateInvalid)
+                    return Err(Error::DateInvalid);
                 }
             }
             SerializeTable::Table {
@@ -1141,7 +1167,7 @@ impl<'a, 'b> ser::SerializeStruct for SerializeTable<'a, 'b> {
                 });
                 match res {
                     Ok(()) => first.set(false),
-                    Err(Error::UnsupportedNone) => {},
+                    Err(Error::UnsupportedNone) => {}
                     Err(e) => return Err(e),
                 }
             }
@@ -1151,8 +1177,8 @@ impl<'a, 'b> ser::SerializeStruct for SerializeTable<'a, 'b> {
 
     fn end(self) -> Result<(), Error> {
         match self {
-            SerializeTable::Datetime(_) => {},
-            SerializeTable::Table { ser, first, ..  } => {
+            SerializeTable::Datetime(_) => {}
+            SerializeTable::Table { ser, first, .. } => {
                 if first.get() {
                     let state = ser.state.clone();
                     ser.emit_table_header(&state)?;
@@ -1238,7 +1264,8 @@ impl<'a, 'b> ser::Serializer for DateStrEmitter<'a, 'b> {
     }
 
     fn serialize_some<T: ?Sized>(self, _value: &T) -> Result<(), Self::Error>
-        where T: ser::Serialize
+    where
+        T: ser::Serialize,
     {
         Err(Error::KeyNotString)
     }
@@ -1247,78 +1274,88 @@ impl<'a, 'b> ser::Serializer for DateStrEmitter<'a, 'b> {
         Err(Error::KeyNotString)
     }
 
-    fn serialize_unit_struct(self,
-                             _name: &'static str)
-                             -> Result<(), Self::Error> {
+    fn serialize_unit_struct(self, _name: &'static str) -> Result<(), Self::Error> {
         Err(Error::DateInvalid)
     }
 
-    fn serialize_unit_variant(self,
-                              _name: &'static str,
-                              _variant_index: u32,
-                              _variant: &'static str)
-                              -> Result<(), Self::Error> {
+    fn serialize_unit_variant(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        _variant: &'static str,
+    ) -> Result<(), Self::Error> {
         Err(Error::DateInvalid)
     }
 
-    fn serialize_newtype_struct<T: ?Sized>(self, _name: &'static str, _value: &T)
-                                           -> Result<(), Self::Error>
-        where T: ser::Serialize,
+    fn serialize_newtype_struct<T: ?Sized>(
+        self,
+        _name: &'static str,
+        _value: &T,
+    ) -> Result<(), Self::Error>
+    where
+        T: ser::Serialize,
     {
         Err(Error::DateInvalid)
     }
 
-    fn serialize_newtype_variant<T: ?Sized>(self,
-                                            _name: &'static str,
-                                            _variant_index: u32,
-                                            _variant: &'static str,
-                                            _value: &T)
-                                            -> Result<(), Self::Error>
-        where T: ser::Serialize,
+    fn serialize_newtype_variant<T: ?Sized>(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        _variant: &'static str,
+        _value: &T,
+    ) -> Result<(), Self::Error>
+    where
+        T: ser::Serialize,
     {
         Err(Error::DateInvalid)
     }
 
-    fn serialize_seq(self, _len: Option<usize>)
-                     -> Result<Self::SerializeSeq, Self::Error> {
+    fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
         Err(Error::DateInvalid)
     }
 
-    fn serialize_tuple(self, _len: usize)
-                       -> Result<Self::SerializeTuple, Self::Error> {
+    fn serialize_tuple(self, _len: usize) -> Result<Self::SerializeTuple, Self::Error> {
         Err(Error::DateInvalid)
     }
 
-    fn serialize_tuple_struct(self, _name: &'static str, _len: usize)
-                              -> Result<Self::SerializeTupleStruct, Self::Error> {
+    fn serialize_tuple_struct(
+        self,
+        _name: &'static str,
+        _len: usize,
+    ) -> Result<Self::SerializeTupleStruct, Self::Error> {
         Err(Error::DateInvalid)
     }
 
-    fn serialize_tuple_variant(self,
-                               _name: &'static str,
-                               _variant_index: u32,
-                               _variant: &'static str,
-                               _len: usize)
-                               -> Result<Self::SerializeTupleVariant, Self::Error> {
+    fn serialize_tuple_variant(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        _variant: &'static str,
+        _len: usize,
+    ) -> Result<Self::SerializeTupleVariant, Self::Error> {
         Err(Error::DateInvalid)
     }
 
-    fn serialize_map(self, _len: Option<usize>)
-                     -> Result<Self::SerializeMap, Self::Error> {
+    fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
         Err(Error::DateInvalid)
     }
 
-    fn serialize_struct(self, _name: &'static str, _len: usize)
-                        -> Result<Self::SerializeStruct, Self::Error> {
+    fn serialize_struct(
+        self,
+        _name: &'static str,
+        _len: usize,
+    ) -> Result<Self::SerializeStruct, Self::Error> {
         Err(Error::DateInvalid)
     }
 
-    fn serialize_struct_variant(self,
-                                _name: &'static str,
-                                _variant_index: u32,
-                                _variant: &'static str,
-                                _len: usize)
-                                -> Result<Self::SerializeStructVariant, Self::Error> {
+    fn serialize_struct_variant(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        _variant: &'static str,
+        _len: usize,
+    ) -> Result<Self::SerializeStructVariant, Self::Error> {
         Err(Error::DateInvalid)
     }
 }
@@ -1397,7 +1434,8 @@ impl ser::Serializer for StringExtractor {
     }
 
     fn serialize_some<T: ?Sized>(self, _value: &T) -> Result<String, Self::Error>
-        where T: ser::Serialize
+    where
+        T: ser::Serialize,
     {
         Err(Error::KeyNotString)
     }
@@ -1406,78 +1444,88 @@ impl ser::Serializer for StringExtractor {
         Err(Error::KeyNotString)
     }
 
-    fn serialize_unit_struct(self,
-                             _name: &'static str)
-                             -> Result<String, Self::Error> {
+    fn serialize_unit_struct(self, _name: &'static str) -> Result<String, Self::Error> {
         Err(Error::KeyNotString)
     }
 
-    fn serialize_unit_variant(self,
-                              _name: &'static str,
-                              _variant_index: u32,
-                              _variant: &'static str)
-                              -> Result<String, Self::Error> {
+    fn serialize_unit_variant(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        _variant: &'static str,
+    ) -> Result<String, Self::Error> {
         Err(Error::KeyNotString)
     }
 
-    fn serialize_newtype_struct<T: ?Sized>(self, _name: &'static str, value: &T)
-                                           -> Result<String, Self::Error>
-        where T: ser::Serialize,
+    fn serialize_newtype_struct<T: ?Sized>(
+        self,
+        _name: &'static str,
+        value: &T,
+    ) -> Result<String, Self::Error>
+    where
+        T: ser::Serialize,
     {
         value.serialize(self)
     }
 
-    fn serialize_newtype_variant<T: ?Sized>(self,
-                                            _name: &'static str,
-                                            _variant_index: u32,
-                                            _variant: &'static str,
-                                            _value: &T)
-                                            -> Result<String, Self::Error>
-        where T: ser::Serialize,
+    fn serialize_newtype_variant<T: ?Sized>(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        _variant: &'static str,
+        _value: &T,
+    ) -> Result<String, Self::Error>
+    where
+        T: ser::Serialize,
     {
         Err(Error::KeyNotString)
     }
 
-    fn serialize_seq(self, _len: Option<usize>)
-                     -> Result<Self::SerializeSeq, Self::Error> {
+    fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
         Err(Error::KeyNotString)
     }
 
-    fn serialize_tuple(self, _len: usize)
-                       -> Result<Self::SerializeTuple, Self::Error> {
+    fn serialize_tuple(self, _len: usize) -> Result<Self::SerializeTuple, Self::Error> {
         Err(Error::KeyNotString)
     }
 
-    fn serialize_tuple_struct(self, _name: &'static str, _len: usize)
-                              -> Result<Self::SerializeTupleStruct, Self::Error> {
+    fn serialize_tuple_struct(
+        self,
+        _name: &'static str,
+        _len: usize,
+    ) -> Result<Self::SerializeTupleStruct, Self::Error> {
         Err(Error::KeyNotString)
     }
 
-    fn serialize_tuple_variant(self,
-                               _name: &'static str,
-                               _variant_index: u32,
-                               _variant: &'static str,
-                               _len: usize)
-                               -> Result<Self::SerializeTupleVariant, Self::Error> {
+    fn serialize_tuple_variant(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        _variant: &'static str,
+        _len: usize,
+    ) -> Result<Self::SerializeTupleVariant, Self::Error> {
         Err(Error::KeyNotString)
     }
 
-    fn serialize_map(self, _len: Option<usize>)
-                     -> Result<Self::SerializeMap, Self::Error> {
+    fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
         Err(Error::KeyNotString)
     }
 
-    fn serialize_struct(self, _name: &'static str, _len: usize)
-                        -> Result<Self::SerializeStruct, Self::Error> {
+    fn serialize_struct(
+        self,
+        _name: &'static str,
+        _len: usize,
+    ) -> Result<Self::SerializeStruct, Self::Error> {
         Err(Error::KeyNotString)
     }
 
-    fn serialize_struct_variant(self,
-                                _name: &'static str,
-                                _variant_index: u32,
-                                _variant: &'static str,
-                                _len: usize)
-                                -> Result<Self::SerializeStructVariant, Self::Error> {
+    fn serialize_struct_variant(
+        self,
+        _name: &'static str,
+        _variant_index: u32,
+        _variant: &'static str,
+        _len: usize,
+    ) -> Result<Self::SerializeStructVariant, Self::Error> {
         Err(Error::KeyNotString)
     }
 }
@@ -1549,12 +1597,12 @@ enum Category {
 /// # type Dependency = String;
 /// # fn main() {}
 /// ```
-pub fn tables_last<'a, I, K, V, S>(data: &'a I, serializer: S)
-                                   -> Result<S::Ok, S::Error>
-    where &'a I: IntoIterator<Item = (K, V)>,
-          K: ser::Serialize,
-          V: ser::Serialize,
-          S: ser::Serializer
+pub fn tables_last<'a, I, K, V, S>(data: &'a I, serializer: S) -> Result<S::Ok, S::Error>
+where
+    &'a I: IntoIterator<Item = (K, V)>,
+    K: ser::Serialize,
+    V: ser::Serialize,
+    S: ser::Serializer,
 {
     use serde::ser::SerializeMap;
 
@@ -1668,15 +1716,30 @@ impl<E: ser::Error> ser::Serializer for Categorize<E> {
         Err(ser::Error::custom("unsupported"))
     }
 
-    fn serialize_unit_variant(self, _: &'static str, _: u32, _: &'static str) -> Result<Self::Ok, Self::Error> {
+    fn serialize_unit_variant(
+        self,
+        _: &'static str,
+        _: u32,
+        _: &'static str,
+    ) -> Result<Self::Ok, Self::Error> {
         Err(ser::Error::custom("unsupported"))
     }
 
-    fn serialize_newtype_struct<T: ?Sized + ser::Serialize>(self, _: &'static str, v: &T) -> Result<Self::Ok, Self::Error> {
+    fn serialize_newtype_struct<T: ?Sized + ser::Serialize>(
+        self,
+        _: &'static str,
+        v: &T,
+    ) -> Result<Self::Ok, Self::Error> {
         v.serialize(self)
     }
 
-    fn serialize_newtype_variant<T: ?Sized + ser::Serialize>(self, _: &'static str, _: u32, _: &'static str, _: &T) -> Result<Self::Ok, Self::Error> {
+    fn serialize_newtype_variant<T: ?Sized + ser::Serialize>(
+        self,
+        _: &'static str,
+        _: u32,
+        _: &'static str,
+        _: &T,
+    ) -> Result<Self::Ok, Self::Error> {
         Err(ser::Error::custom("unsupported"))
     }
 
@@ -1688,11 +1751,21 @@ impl<E: ser::Error> ser::Serializer for Categorize<E> {
         Ok(self)
     }
 
-    fn serialize_tuple_struct(self, _: &'static str, _: usize) -> Result<Self::SerializeTupleStruct, Self::Error> {
+    fn serialize_tuple_struct(
+        self,
+        _: &'static str,
+        _: usize,
+    ) -> Result<Self::SerializeTupleStruct, Self::Error> {
         Ok(self)
     }
 
-    fn serialize_tuple_variant(self, _: &'static str, _: u32, _: &'static str, _: usize) -> Result<Self::SerializeTupleVariant, Self::Error> {
+    fn serialize_tuple_variant(
+        self,
+        _: &'static str,
+        _: u32,
+        _: &'static str,
+        _: usize,
+    ) -> Result<Self::SerializeTupleVariant, Self::Error> {
         Ok(self)
     }
 
@@ -1704,7 +1777,13 @@ impl<E: ser::Error> ser::Serializer for Categorize<E> {
         Ok(self)
     }
 
-    fn serialize_struct_variant(self, _: &'static str, _: u32, _: &'static str, _: usize) -> Result<Self::SerializeStructVariant, Self::Error> {
+    fn serialize_struct_variant(
+        self,
+        _: &'static str,
+        _: u32,
+        _: &'static str,
+        _: usize,
+    ) -> Result<Self::SerializeStructVariant, Self::Error> {
         Err(ser::Error::custom("unsupported"))
     }
 }
@@ -1713,8 +1792,7 @@ impl<E: ser::Error> ser::SerializeSeq for Categorize<E> {
     type Ok = Category;
     type Error = E;
 
-    fn serialize_element<T: ?Sized + ser::Serialize>(&mut self, _: &T)
-                                                     -> Result<(), Self::Error> {
+    fn serialize_element<T: ?Sized + ser::Serialize>(&mut self, _: &T) -> Result<(), Self::Error> {
         Ok(())
     }
 
@@ -1727,8 +1805,7 @@ impl<E: ser::Error> ser::SerializeTuple for Categorize<E> {
     type Ok = Category;
     type Error = E;
 
-    fn serialize_element<T: ?Sized + ser::Serialize>(&mut self, _: &T)
-                                                     -> Result<(), Self::Error> {
+    fn serialize_element<T: ?Sized + ser::Serialize>(&mut self, _: &T) -> Result<(), Self::Error> {
         Ok(())
     }
 
@@ -1741,8 +1818,7 @@ impl<E: ser::Error> ser::SerializeTupleVariant for Categorize<E> {
     type Ok = Category;
     type Error = E;
 
-    fn serialize_field<T: ?Sized + ser::Serialize>(&mut self, _: &T)
-                                                   -> Result<(), Self::Error> {
+    fn serialize_field<T: ?Sized + ser::Serialize>(&mut self, _: &T) -> Result<(), Self::Error> {
         Ok(())
     }
 
@@ -1755,8 +1831,7 @@ impl<E: ser::Error> ser::SerializeTupleStruct for Categorize<E> {
     type Ok = Category;
     type Error = E;
 
-    fn serialize_field<T: ?Sized + ser::Serialize>(&mut self, _: &T)
-                                                   -> Result<(), Self::Error> {
+    fn serialize_field<T: ?Sized + ser::Serialize>(&mut self, _: &T) -> Result<(), Self::Error> {
         Ok(())
     }
 
@@ -1769,13 +1844,11 @@ impl<E: ser::Error> ser::SerializeMap for Categorize<E> {
     type Ok = Category;
     type Error = E;
 
-    fn serialize_key<T: ?Sized + ser::Serialize>(&mut self, _: &T)
-                                                 -> Result<(), Self::Error> {
+    fn serialize_key<T: ?Sized + ser::Serialize>(&mut self, _: &T) -> Result<(), Self::Error> {
         Ok(())
     }
 
-    fn serialize_value<T: ?Sized + ser::Serialize>(&mut self, _: &T)
-                                                   -> Result<(), Self::Error> {
+    fn serialize_value<T: ?Sized + ser::Serialize>(&mut self, _: &T) -> Result<(), Self::Error> {
         Ok(())
     }
 
@@ -1788,10 +1861,9 @@ impl<E: ser::Error> ser::SerializeStruct for Categorize<E> {
     type Ok = Category;
     type Error = E;
 
-    fn serialize_field<T: ?Sized>(&mut self,
-                                  _: &'static str,
-                                  _: &T) -> Result<(), Self::Error>
-        where T: ser::Serialize,
+    fn serialize_field<T: ?Sized>(&mut self, _: &'static str, _: &T) -> Result<(), Self::Error>
+    where
+        T: ser::Serialize,
     {
         Ok(())
     }
-- 
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