28 files changed, 851 insertions, 390 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 441fcc1..03c3f44 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,5 +1,6 @@
 [package]
 name = "synfone"
+edition = "2018"
 version = "0.1.0"
 authors = ["Graham Northup <grissess@nexusg.org>"]
 
diff --git a/src/client.rs b/src/client.rs
index 5cf941a..bf661d0 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -1,8 +1,8 @@
-use std::net::{UdpSocket, SocketAddr};
-use std::{io, mem, iter};
+use std::io;
+use std::net::{SocketAddr, UdpSocket};
 
-use synth::*;
-use proto::*;
+use crate::proto::Command;
+use crate::synth::{Environment, GenBox, Parameters, SampleBuffer};
 
 pub struct Voice {
     pub gen: GenBox,
@@ -15,7 +15,7 @@ pub struct Client {
     pub env: Environment,
     pub frames: usize,
     pub buf: SampleBuffer,
-    norm: SampleBuffer
+    norm: SampleBuffer,
 }
 
 macro_rules! dprintln {
@@ -25,7 +25,16 @@ macro_rules! dprintln {
 impl Client {
     pub fn new(socket: UdpSocket, gens: Vec<GenBox>, env: Environment) -> io::Result<Client> {
         let buf = SampleBuffer::new(env.default_buffer_size);
-        let voices = gens.into_iter().map(|g| Voice { gen: g, params: Parameters { env: env.clone(), ..Default::default() } }).collect();
+        let voices = gens
+            .into_iter()
+            .map(|g| Voice {
+                gen: g,
+                params: Parameters {
+                    env: env.clone(),
+                    ..Default::default()
+                },
+            })
+            .collect();
         Ok(Client {
             socket: socket,
             voices: voices,
@@ -74,33 +83,54 @@ impl Client {
     pub fn handle_command(&mut self, cmd: Command, sender: SocketAddr) -> bool {
         dprintln!("Packet {:?} from {:?}", cmd, sender);
         match cmd {
-            Command::KeepAlive => {},
-            Command::Ping{..} => {
+            Command::KeepAlive => {}
+            Command::Ping { .. } => {
                 let mut reply_buffer: [u8; Command::SIZE] = [0u8; Command::SIZE];
                 cmd.write_into(&mut reply_buffer);
                 self.socket.send_to(&reply_buffer, sender);
-            },
+            }
             Command::Quit => {
                 return false;
-            },
-            Command::Play{voice, freq, amp, ..} => {
+            }
+            Command::Play {
+                voice, freq, amp, ..
+            } => {
                 if (voice as usize) >= self.voices.len() {
-                    dprintln!("Dropping packet: tried to send to voice {} >= number of voices {}", voice, self.voices.len());
+                    dprintln!(
+                        "Dropping packet: tried to send to voice {} >= number of voices {}",
+                        voice,
+                        self.voices.len()
+                    );
                     return true;
                 }
                 let dur = cmd.duration().unwrap();
                 let frac_secs = (dur.as_secs() as f32) + (dur.subsec_nanos() as f32) / 1.0e9;
                 let frames = frac_secs * (self.env.sample_rate as f32);
 
-                dprintln!("Playing on voice {} freq {} amp {} from frame {} until frame {}", voice, freq, amp, self.frames, (self.frames as f32) + frames);
-
-                let mut vars = &mut self.voices[voice as usize].params.vars;
-                *vars.entry("v_start".to_string()).or_insert_with(Default::default) = (self.frames as f32);
-                *vars.entry("v_deadline".to_string()).or_insert_with(Default::default) = (self.frames as f32) + frames;
-                *vars.entry("v_freq".to_string()).or_insert_with(Default::default) = freq as f32;
-                *vars.entry("v_amp".to_string()).or_insert_with(Default::default) = amp;
-            },
-            Command::Caps{..} => {
+                dprintln!(
+                    "Playing on voice {} freq {} amp {} from frame {} until frame {}",
+                    voice,
+                    freq,
+                    amp,
+                    self.frames,
+                    (self.frames as f32) + frames
+                );
+
+                let vars = &mut self.voices[voice as usize].params.vars;
+                *vars
+                    .entry("v_start".to_string())
+                    .or_insert_with(Default::default) = self.frames as f32;
+                *vars
+                    .entry("v_deadline".to_string())
+                    .or_insert_with(Default::default) = self.frames as f32 + frames;
+                *vars
+                    .entry("v_freq".to_string())
+                    .or_insert_with(Default::default) = freq as f32;
+                *vars
+                    .entry("v_amp".to_string())
+                    .or_insert_with(Default::default) = amp;
+            }
+            Command::Caps { .. } => {
                 let reply = Command::Caps {
                     voices: self.voices.len() as u32,
                     tp: ['S' as u8, 'Y' as u8, 'N' as u8, 'F' as u8],
@@ -123,7 +153,7 @@ impl Client {
             },
             Command::Unknown{data} => {
                 dprintln!("Dropping packet: unknown data {:?}", (&data as &[u8]));
-            },
+            }
         }
 
         true
@@ -133,7 +163,11 @@ impl Client {
         let len = self.voices.len();
 
         for voice in self.voices.iter_mut() {
-            *voice.params.vars.entry("v_frame".to_string()).or_insert_with(Default::default) = self.frames as f32;
+            *voice
+                .params
+                .vars
+                .entry("v_frame".to_string())
+                .or_insert_with(Default::default) = self.frames as f32;
         }
 
         let (first, next) = self.voices.split_at_mut(1);
@@ -155,7 +189,9 @@ impl Client {
     pub fn write_frames_bytes(&self, out_buffer: &mut Vec<u8>) {
         let current = out_buffer.len();
         out_buffer.reserve_exact(self.buf.size() - current);
-        unsafe { out_buffer.set_len(self.buf.size()); }
+        unsafe {
+            out_buffer.set_len(self.buf.size());
+        }
         self.buf.write_bytes(out_buffer);
     }
 }
diff --git a/src/graphics/draw/mod.rs b/src/graphics/draw/mod.rs
index 75ce9f7..8f414f5 100644
--- a/src/graphics/draw/mod.rs
+++ b/src/graphics/draw/mod.rs
@@ -1,3 +1 @@
-use super::*;
-
 /* TODO */
diff --git a/src/graphics/mod.rs b/src/graphics/mod.rs
index 4bb4388..365bf6b 100644
--- a/src/graphics/mod.rs
+++ b/src/graphics/mod.rs
@@ -1,4 +1 @@
-use super::*;
-use monitor::*;
-
 pub mod draw;
diff --git a/src/lang/mod.rs b/src/lang/mod.rs
index 14a9202..7a62cd1 100644
--- a/src/lang/mod.rs
+++ b/src/lang/mod.rs
@@ -4,7 +4,7 @@ pub mod parser;
 pub use self::parser::Parser;
 
 // NB: No Eq due to embedded f32
-#[derive(Debug,PartialEq,Clone)]
+#[derive(Debug, PartialEq, Clone)]
 pub enum Token {
     Ident(String),
     Integer(isize),
@@ -14,7 +14,7 @@ pub enum Token {
     EOF,
 }
 
-#[derive(Debug,PartialEq,Eq,Clone,Copy)]
+#[derive(Debug, PartialEq, Eq, Clone, Copy)]
 pub enum TokType {
     Ident,
     Integer,
diff --git a/src/lang/parser.rs b/src/lang/parser.rs
index ec8ef40..ac7eccd 100644
--- a/src/lang/parser.rs
+++ b/src/lang/parser.rs
@@ -1,8 +1,11 @@
-use std::{mem, fmt};
-use std::error::Error;
+use super::{TokType, Token, Tokenizer};
+use crate::synth::{
+    all_factories, Environment, FactoryParameters, GenBox, GenFactoryErrorType, GeneratorFactory,
+    ParamValue, RelOp,
+};
 use std::collections::HashMap;
-use super::*;
-use synth::*;
+use std::error::Error;
+use std::{fmt, mem};
 
 /*
 macro_rules! dprintln {
@@ -36,8 +39,12 @@ impl ErrorType {
         };
 
         ret.desc = match ret.kind {
-            ErrorKind::Unexpected(found, expected) => format!("Found {:?}, expected {:?}", found, expected),
-            ErrorKind::Unparseable(found, ref term) => format!("Cannot consume {:?} token in {}", found, term),
+            ErrorKind::Unexpected(found, expected) => {
+                format!("Found {:?}, expected {:?}", found, expected)
+            }
+            ErrorKind::Unparseable(found, ref term) => {
+                format!("Cannot consume {:?} token in {}", found, term)
+            }
             ErrorKind::ExpectedOp(c, found) => format!("Expected {:?}, found {:?}", c, found),
             ErrorKind::UnknownGen(ref s) => format!("Unknown generator name {}", s),
         };
@@ -61,20 +68,20 @@ impl Error for ErrorType {
 
 impl fmt::Display for ErrorType {
     fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
-        write!(f, "{}", self.description())
+        write!(f, "{}", self.to_string())
     }
 }
 
-pub struct Parser<T: Iterator<Item=char>> {
+pub struct Parser<T: Iterator<Item = char>> {
     tzr: Tokenizer<T>,
     env: Environment,
     token: Token,
     pushback: Option<Token>,
-    factories: HashMap<String, &'static GeneratorFactory>,
+    factories: HashMap<String, &'static dyn GeneratorFactory>,
 }
 
-impl<T: Iterator<Item=char>> Parser<T> {
-    pub fn new(mut tzr: Tokenizer<T>, env: Environment) -> Result<Parser<T>, Box<Error>> {
+impl<T: Iterator<Item = char>> Parser<T> {
+    pub fn new(mut tzr: Tokenizer<T>, env: Environment) -> Result<Parser<T>, Box<dyn Error>> {
         let token = tzr.next_token()?;
         Ok(Parser {
             tzr: tzr,
@@ -89,7 +96,7 @@ impl<T: Iterator<Item=char>> Parser<T> {
         match self.pushback {
             None => {
                 self.pushback = Some(tok);
-            },
+            }
             Some(_) => panic!("too many pushbacks on Parser"),
         }
     }
@@ -101,7 +108,7 @@ impl<T: Iterator<Item=char>> Parser<T> {
         }
     }
 
-    pub fn expect(&mut self, ty: TokType) -> Result<Token, Box<Error>> {
+    pub fn expect(&mut self, ty: TokType) -> Result<Token, Box<dyn Error>> {
         if ty != self.cur_token().to_type() {
             Err(ErrorType::new(ErrorKind::Unexpected(self.token.to_type(), ty)).into())
         } else {
@@ -112,18 +119,23 @@ impl<T: Iterator<Item=char>> Parser<T> {
         }
     }
 
-    pub fn expect_ident(&mut self) -> Result<String, Box<Error>> {
+    pub fn expect_ident(&mut self) -> Result<String, Box<dyn Error>> {
         match self.expect(TokType::Ident)? {
             Token::Ident(s) => Ok(s),
             _ => unreachable!(),
         }
     }
 
-    pub fn expect_op(&mut self, oper: char) -> Result<(), Box<Error>> {
+    pub fn expect_op(&mut self, oper: char) -> Result<(), Box<dyn Error>> {
         dprintln!("expect_op: {:?} ({})", self.cur_token(), oper);
         match *self.cur_token() {
-            Token::Oper(c) if c == oper => { self.expect(TokType::Oper)?; Ok(()) },
-            _ => Err(ErrorType::new(ErrorKind::ExpectedOp(oper, self.cur_token().to_type())).into()),
+            Token::Oper(c) if c == oper => {
+                self.expect(TokType::Oper)?;
+                Ok(())
+            }
+            _ => {
+                Err(ErrorType::new(ErrorKind::ExpectedOp(oper, self.cur_token().to_type())).into())
+            }
         }
     }
 
@@ -131,15 +143,14 @@ impl<T: Iterator<Item=char>> Parser<T> {
         dprintln!("peek_op: {:?} ({})", self.cur_token(), oper);
         match *self.cur_token() {
             Token::Oper(c) if c == oper => true,
-            _ => false
+            _ => false,
         }
     }
 
-    pub fn parse_gen_vec(&mut self) -> Result<Vec<GenBox>, Box<Error>> {
+    pub fn parse_gen_vec(&mut self) -> Result<Vec<GenBox>, Box<dyn Error>> {
         let mut ret: Vec<GenBox> = Vec::new();
         self.expect_op('[')?;
 
-
         loop {
             if self.expect_op(']').is_ok() {
                 break;
@@ -156,37 +167,70 @@ impl<T: Iterator<Item=char>> Parser<T> {
         Ok(ret)
     }
 
-    pub fn parse_gen_rel(&mut self) -> Result<GenBox, Box<Error>> {
+    pub fn parse_gen_rel(&mut self) -> Result<GenBox, Box<dyn Error>> {
         let left = self.parse_gen_terms()?;
 
         match *self.cur_token() {
             Token::Oper(c) => {
-                if c == '>' || c == '!' || c == '<' || c == '=' { // TODO: Conflict with param name
+                if c == '>' || c == '!' || c == '<' || c == '=' {
+                    // TODO: Conflict with param name
                     self.expect(TokType::Oper)?;
                     let relop = match (c, self.cur_token()) {
-                        ('<', &Token::Oper('=')) => { self.expect(TokType::Oper)?; RelOp::LessEqual },
-                        ('=', &Token::Oper('=')) => { self.expect(TokType::Oper)?; RelOp::Equal },
-                        ('>', &Token::Oper('=')) => { self.expect(TokType::Oper)?; RelOp::Greater },
-                        ('!', &Token::Oper('=')) => { self.expect(TokType::Oper)?; RelOp::NotEqual },
+                        ('<', &Token::Oper('=')) => {
+                            self.expect(TokType::Oper)?;
+                            RelOp::LessEqual
+                        }
+                        ('=', &Token::Oper('=')) => {
+                            self.expect(TokType::Oper)?;
+                            RelOp::Equal
+                        }
+                        ('>', &Token::Oper('=')) => {
+                            self.expect(TokType::Oper)?;
+                            RelOp::Greater
+                        }
+                        ('!', &Token::Oper('=')) => {
+                            self.expect(TokType::Oper)?;
+                            RelOp::NotEqual
+                        }
                         ('<', _) => RelOp::Less,
                         ('>', _) => RelOp::Greater,
-                        _ => return Err(ErrorType::new(ErrorKind::Unparseable(TokType::Oper, "rel expr".to_string())).into()),
+                        _ => {
+                            return Err(ErrorType::new(ErrorKind::Unparseable(
+                                TokType::Oper,
+                                "rel expr".to_string(),
+                            ))
+                            .into())
+                        }
+                    };
+                    let mut params = FactoryParameters {
+                        env: self.env.clone(),
+                        ..Default::default()
                     };
-                    let mut params = FactoryParameters { env: self.env.clone(), ..Default::default() };
-                    params.vars.insert("0".to_string(), ParamValue::Generator(left));
-                    params.vars.insert("1".to_string(), ParamValue::String(relop.to_param_string().to_string()));
-                    params.vars.insert("2".to_string(), ParamValue::Generator(self.parse_gen_rel()?));
-                    let factory = self.factories.get("rel").ok_or(ErrorType::new(ErrorKind::UnknownGen("rel".to_string())))?;
+                    params
+                        .vars
+                        .insert("0".to_string(), ParamValue::Generator(left));
+                    params.vars.insert(
+                        "1".to_string(),
+                        ParamValue::String(relop.to_param_string().to_string()),
+                    );
+                    params.vars.insert(
+                        "2".to_string(),
+                        ParamValue::Generator(self.parse_gen_rel()?),
+                    );
+                    let factory = self
+                        .factories
+                        .get("rel")
+                        .ok_or(ErrorType::new(ErrorKind::UnknownGen("rel".to_string())))?;
                     factory.new(&mut params).map_err(Into::into)
                 } else {
                     Ok(left)
                 }
-            },
+            }
             _ => Ok(left),
         }
     }
 
-    pub fn parse_gen_terms(&mut self) -> Result<GenBox, Box<Error>> {
+    pub fn parse_gen_terms(&mut self) -> Result<GenBox, Box<dyn Error>> {
         let mut gens: Vec<GenBox> = Vec::new();
         gens.push(self.parse_gen_factors()?);
 
@@ -195,14 +239,27 @@ impl<T: Iterator<Item=char>> Parser<T> {
                 Token::Oper('+') => {
                     self.expect_op('+')?;
                     gens.push(self.parse_gen_factors()?);
-                },
+                }
                 Token::Oper('-') => {
                     self.expect_op('-')?;
-                    let mut params = FactoryParameters { env: self.env.clone(), ..Default::default() };
-                    params.vars.insert("0".to_string(), ParamValue::Generator(self.parse_gen_factors()?));
-                    let factory = self.factories.get("negate").ok_or(ErrorType::new(ErrorKind::UnknownGen("negate".to_string())))?;
-                    gens.push(factory.new(&mut params).map_err(GenFactoryErrorType::from)?);
-                },
+                    let mut params = FactoryParameters {
+                        env: self.env.clone(),
+                        ..Default::default()
+                    };
+                    params.vars.insert(
+                        "0".to_string(),
+                        ParamValue::Generator(self.parse_gen_factors()?),
+                    );
+                    let factory = self
+                        .factories
+                        .get("negate")
+                        .ok_or(ErrorType::new(ErrorKind::UnknownGen("negate".to_string())))?;
+                    gens.push(
+                        factory
+                            .new(&mut params)
+                            .map_err(GenFactoryErrorType::from)?,
+                    );
+                }
                 _ => break,
             }
         }
@@ -211,15 +268,23 @@ impl<T: Iterator<Item=char>> Parser<T> {
             return Ok(gens.pop().unwrap());
         }
 
-        let mut params = FactoryParameters { env: self.env.clone(), ..Default::default() };
+        let mut params = FactoryParameters {
+            env: self.env.clone(),
+            ..Default::default()
+        };
         for (idx, gen) in gens.into_iter().enumerate() {
-            params.vars.insert(idx.to_string(), ParamValue::Generator(gen));
+            params
+                .vars
+                .insert(idx.to_string(), ParamValue::Generator(gen));
         }
-        let factory = self.factories.get("add").ok_or(ErrorType::new(ErrorKind::UnknownGen("add".to_string())))?;
+        let factory = self
+            .factories
+            .get("add")
+            .ok_or(ErrorType::new(ErrorKind::UnknownGen("add".to_string())))?;
         factory.new(&mut params).map_err(Into::into)
     }
 
-    pub fn parse_gen_factors(&mut self) -> Result<GenBox, Box<Error>> {
+    pub fn parse_gen_factors(&mut self) -> Result<GenBox, Box<dyn Error>> {
         let mut gens: Vec<GenBox> = Vec::new();
         gens.push(self.parse_gen()?);
 
@@ -228,14 +293,25 @@ impl<T: Iterator<Item=char>> Parser<T> {
                 Token::Oper('*') => {
                     self.expect_op('*')?;
                     gens.push(self.parse_gen()?);
-                },
+                }
                 Token::Oper('/') => {
                     self.expect_op('/')?;
-                    let mut params = FactoryParameters { env: self.env.clone(), ..Default::default() };
-                    params.vars.insert("0".to_string(), ParamValue::Generator(self.parse_gen()?));
-                    let factory = self.factories.get("reciprocate").ok_or(ErrorType::new(ErrorKind::UnknownGen("reciprocate".to_string())))?;
-                    gens.push(factory.new(&mut params).map_err(GenFactoryErrorType::from)?);
-                },
+                    let mut params = FactoryParameters {
+                        env: self.env.clone(),
+                        ..Default::default()
+                    };
+                    params
+                        .vars
+                        .insert("0".to_string(), ParamValue::Generator(self.parse_gen()?));
+                    let factory = self.factories.get("reciprocate").ok_or(ErrorType::new(
+                        ErrorKind::UnknownGen("reciprocate".to_string()),
+                    ))?;
+                    gens.push(
+                        factory
+                            .new(&mut params)
+                            .map_err(GenFactoryErrorType::from)?,
+                    );
+                }
                 _ => break,
             }
         }
@@ -244,32 +320,56 @@ impl<T: Iterator<Item=char>> Parser<T> {
             return Ok(gens.pop().unwrap());
         }
 
-        let mut params = FactoryParameters { env: self.env.clone(), ..Default::default() };
+        let mut params = FactoryParameters {
+            env: self.env.clone(),
+            ..Default::default()
+        };
         for (idx, gen) in gens.into_iter().enumerate() {
-            params.vars.insert(idx.to_string(), ParamValue::Generator(gen));
+            params
+                .vars
+                .insert(idx.to_string(), ParamValue::Generator(gen));
         }
-        let factory = self.factories.get("mul").ok_or(ErrorType::new(ErrorKind::UnknownGen("mul".to_string())))?;
+        let factory = self
+            .factories
+            .get("mul")
+            .ok_or(ErrorType::new(ErrorKind::UnknownGen("mul".to_string())))?;
         factory.new(&mut params).map_err(Into::into)
     }
 
-    pub fn parse_gen(&mut self) -> Result<GenBox, Box<Error>> {
+    pub fn parse_gen(&mut self) -> Result<GenBox, Box<dyn Error>> {
         match *self.cur_token() {
             Token::Integer(v) => {
                 self.expect(TokType::Integer)?;
-                let mut params = FactoryParameters { env: self.env.clone(), ..Default::default() };
-                params.vars.insert("0".to_string(), ParamValue::String("_".to_string()));
+                let mut params = FactoryParameters {
+                    env: self.env.clone(),
+                    ..Default::default()
+                };
+                params
+                    .vars
+                    .insert("0".to_string(), ParamValue::String("_".to_string()));
                 params.vars.insert("1".to_string(), ParamValue::Integer(v));
-                let factory = self.factories.get("param").ok_or(ErrorType::new(ErrorKind::UnknownGen("param".to_string())))?;
+                let factory = self
+                    .factories
+                    .get("param")
+                    .ok_or(ErrorType::new(ErrorKind::UnknownGen("param".to_string())))?;
                 factory.new(&mut params).map_err(Into::into)
-            },
+            }
             Token::Float(v) => {
                 self.expect(TokType::Float)?;
-                let mut params = FactoryParameters { env: self.env.clone(), ..Default::default() };
-                params.vars.insert("0".to_string(), ParamValue::String("_".to_string()));
+                let mut params = FactoryParameters {
+                    env: self.env.clone(),
+                    ..Default::default()
+                };
+                params
+                    .vars
+                    .insert("0".to_string(), ParamValue::String("_".to_string()));
                 params.vars.insert("1".to_string(), ParamValue::Float(v));
-                let factory = self.factories.get("param").ok_or(ErrorType::new(ErrorKind::UnknownGen("param".to_string())))?;
+                let factory = self
+                    .factories
+                    .get("param")
+                    .ok_or(ErrorType::new(ErrorKind::UnknownGen("param".to_string())))?;
                 factory.new(&mut params).map_err(Into::into)
-            },
+            }
             Token::Ident(_) => {
                 let name = self.expect_ident()?;
                 if self.peek_op('(') {
@@ -280,12 +380,20 @@ impl<T: Iterator<Item=char>> Parser<T> {
                     };
                     factory.new(&mut params).map_err(Into::into)
                 } else {
-                    let mut params = FactoryParameters { env: self.env.clone(), ..Default::default() };
-                    params.vars.insert("0".to_string(), ParamValue::String(name));
-                    let factory = self.factories.get("param").ok_or(ErrorType::new(ErrorKind::UnknownGen("param".to_string())))?;
+                    let mut params = FactoryParameters {
+                        env: self.env.clone(),
+                        ..Default::default()
+                    };
+                    params
+                        .vars
+                        .insert("0".to_string(), ParamValue::String(name));
+                    let factory = self
+                        .factories
+                        .get("param")
+                        .ok_or(ErrorType::new(ErrorKind::UnknownGen("param".to_string())))?;
                     factory.new(&mut params).map_err(Into::into)
                 }
-            },
+            }
             Token::Oper('(') => {
                 dprintln!("consuming paren in parse_gen");
                 self.expect(TokType::Oper)?;
@@ -293,16 +401,23 @@ impl<T: Iterator<Item=char>> Parser<T> {
                 dprintln!("parenthesized generator is concluding");
                 self.expect_op(')')?;
                 Ok(ret)
-            },
-            _ => Err(ErrorType::new(ErrorKind::Unparseable(self.cur_token().to_type(), "gen".to_string())).into()),
+            }
+            _ => Err(ErrorType::new(ErrorKind::Unparseable(
+                self.cur_token().to_type(),
+                "gen".to_string(),
+            ))
+            .into()),
         }
     }
 
-    pub fn parse_factory_params(&mut self) -> Result<FactoryParameters, Box<Error>> {
+    pub fn parse_factory_params(&mut self) -> Result<FactoryParameters, Box<dyn Error>> {
         dprintln!("consuming paren in factory_params");
         self.expect_op('(')?;
 
-        let mut params: FactoryParameters = FactoryParameters { env: self.env.clone(), ..Default::default() };
+        let mut params: FactoryParameters = FactoryParameters {
+            env: self.env.clone(),
+            ..Default::default()
+        };
         let mut ctr = 0;
         loop {
             if self.expect_op(')').is_ok() {
@@ -313,7 +428,7 @@ impl<T: Iterator<Item=char>> Parser<T> {
             ctr = new_ctr;
 
             dprintln!("before factory_params comma, tok is {:?}", self.cur_token());
-            if self.expect_op(',').map_err(|e| dprintln!("factory_params consume comma failed: {:?}", e)).is_err() {
+            if self.expect_op(',').map_err(|_e| dprintln!("factory_params consume comma failed: {:?}", e)).is_err() {
                 dprintln!("factory_params is concluding");
                 self.expect_op(')')?;
                 break;
@@ -323,7 +438,10 @@ impl<T: Iterator<Item=char>> Parser<T> {
         Ok(params)
     }
 
-    pub fn parse_param(&mut self, pos: usize) -> Result<(String, ParamValue, usize), Box<Error>> {
+    pub fn parse_param(
+        &mut self,
+        pos: usize,
+    ) -> Result<(String, ParamValue, usize), Box<dyn Error>> {
         let mut ctr = pos;
         let name = match self.expect_ident() {
             Ok(nm) => {
@@ -334,19 +452,29 @@ impl<T: Iterator<Item=char>> Parser<T> {
                     ctr += 1;
                     (ctr - 1).to_string()
                 }
-            },
+            }
             Err(_) => {
                 ctr += 1;
                 (ctr - 1).to_string()
-            },
+            }
         };
 
         dprintln!("about to consume param value, token is {:?}", self.cur_token());
 
-        match self.cur_token().clone() {  // FIXME: Does this really need to be cloned?
-            Token::String(ref v) => { self.expect(TokType::String)?; Ok((name, ParamValue::String(v.clone()), ctr)) },
-            Token::Integer(_) | Token::Float(_) | Token::Ident(_) | Token::Oper('(') => Ok((name, ParamValue::Generator(self.parse_gen_rel()?), ctr)),
-            _ => Err(ErrorType::new(ErrorKind::Unparseable(self.cur_token().to_type(), "param value".to_string())).into()),
+        match self.cur_token().clone() {
+            // FIXME: Does this really need to be cloned?
+            Token::String(ref v) => {
+                self.expect(TokType::String)?;
+                Ok((name, ParamValue::String(v.clone()), ctr))
+            }
+            Token::Integer(_) | Token::Float(_) | Token::Ident(_) | Token::Oper('(') => {
+                Ok((name, ParamValue::Generator(self.parse_gen_rel()?), ctr))
+            }
+            _ => Err(ErrorType::new(ErrorKind::Unparseable(
+                self.cur_token().to_type(),
+                "param value".to_string(),
+            ))
+            .into()),
         }
     }
 }
diff --git a/src/lang/tokenizer.rs b/src/lang/tokenizer.rs
index 6de825b..5711ba2 100644
--- a/src/lang/tokenizer.rs
+++ b/src/lang/tokenizer.rs
@@ -1,8 +1,8 @@
+use super::Token;
 use std::collections::HashMap;
 use std::error::Error;
-use std::{fmt, io, fs};
 use std::io::Read;
-use super::*;
+use std::{fmt, fs, io};
 use unicode_xid::UnicodeXID;
 
 pub struct Lexemes {
@@ -15,7 +15,7 @@ pub struct Lexemes {
     com_outer: char,
     com_inner: char,
     include_delim: char,
-    escapes: HashMap<char, char>
+    escapes: HashMap<char, char>,
 }
 
 impl Default for Lexemes {
@@ -65,8 +65,8 @@ pub enum NumericKind {
 #[derive(Debug)]
 pub enum ErrorKind {
     UnexpectedEOF(Location),
-    BadEscapeValue(EscapeKind, String, Option<Box<Error>>),
-    BadNumericLiteral(NumericKind, String, Option<Box<Error>>),
+    BadEscapeValue(EscapeKind, String, Option<Box<dyn Error>>),
+    BadNumericLiteral(NumericKind, String, Option<Box<dyn Error>>),
     UnknownChar(char),
     IncludeError(io::Error),
     TooManyRecursions(usize),
@@ -86,19 +86,32 @@ impl ErrorType {
         };
 
         ret.desc = match ret.kind {
-            ErrorKind::UnexpectedEOF(ref loc) => format!("Unexpected EOF {}", match *loc {
-                Location::InString => "in string constant",
-                Location::InStringEscape => "in string escape",
-                Location::InInclude => "in include",
-            }),
-            ErrorKind::BadEscapeValue(ref kind, ref val, ref err) => format!("Bad {} escape {}: {:?}", match *kind {
-                EscapeKind::Hexadecimal => "hexadecimal",
-                EscapeKind::Octal => "octal",
-            }, val, err),
-            ErrorKind::BadNumericLiteral(ref kind, ref val, ref err) => format!("Bad {} literal {}: {:?}", match *kind {
-                NumericKind::Integer => "integer",
-                NumericKind::Float => "floating point",
-            }, val, err),
+            ErrorKind::UnexpectedEOF(ref loc) => format!(
+                "Unexpected EOF {}",
+                match *loc {
+                    Location::InString => "in string constant",
+                    Location::InStringEscape => "in string escape",
+                    Location::InInclude => "in include",
+                }
+            ),
+            ErrorKind::BadEscapeValue(ref kind, ref val, ref err) => format!(
+                "Bad {} escape {}: {:?}",
+                match *kind {
+                    EscapeKind::Hexadecimal => "hexadecimal",
+                    EscapeKind::Octal => "octal",
+                },
+                val,
+                err
+            ),
+            ErrorKind::BadNumericLiteral(ref kind, ref val, ref err) => format!(
+                "Bad {} literal {}: {:?}",
+                match *kind {
+                    NumericKind::Integer => "integer",
+                    NumericKind::Float => "floating point",
+                },
+                val,
+                err
+            ),
             ErrorKind::UnknownChar(c) => format!("Unknown character {}", c),
             ErrorKind::IncludeError(ref e) => format!("Error including file: {:?}", e),
             ErrorKind::TooManyRecursions(n) => format!("Include recursed too many times ({})", n),
@@ -115,14 +128,21 @@ impl ErrorType {
     }
 }
 
+impl From<io::Error> for ErrorType {
+    fn from(e: io::Error) -> Self {
+        Self::new(ErrorKind::IncludeError(e))
+    }
+}
+
 impl Error for ErrorType {
     fn description(&self) -> &str {
         &self.desc
     }
 
-    fn cause(&self) -> Option<&Error> {
+    fn cause(&self) -> Option<&dyn Error> {
         match self.kind {
-            ErrorKind::BadNumericLiteral(_, _, ref err) | ErrorKind::BadEscapeValue(_, _, ref err) => match *err {
+            ErrorKind::BadNumericLiteral(_, _, ref err)
+            | ErrorKind::BadEscapeValue(_, _, ref err) => match *err {
                 Some(ref err) => Some(&**err),
                 None => None,
             },
@@ -133,7 +153,7 @@ impl Error for ErrorType {
 
 impl fmt::Display for ErrorType {
     fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
-        write!(f, "{}", self.description())
+        write!(f, "{}", self.to_string())
     }
 }
 
@@ -150,10 +170,7 @@ pub struct ResumableChars {
 
 impl ResumableChars {
     pub fn new(s: String) -> ResumableChars {
-        ResumableChars {
-            string: s,
-            pos: 0,
-        }
+        ResumableChars { string: s, pos: 0 }
     }
 }
 
@@ -166,27 +183,27 @@ impl Iterator for ResumableChars {
         } else {
             let mut iter = self.string[self.pos..].char_indices();
             match iter.next() {
-                Some((pos, ch)) => {
+                Some((_pos, ch)) => {
                     self.pos += match iter.next() {
                         Some((pos, _)) => pos,
                         None => self.string.len(),
                     };
                     Some(ch)
-                },
+                }
                 None => None,
             }
         }
     }
 }
 
-pub struct Tokenizer<T: Iterator<Item=char>> {
+pub struct Tokenizer<T: Iterator<Item = char>> {
     reader: T,
     reader_stack: Vec<ResumableChars>,
     pushback: Option<char>,
     lexemes: Lexemes,
 }
 
-impl<T: Iterator<Item=char>> Tokenizer<T> {
+impl<T: Iterator<Item = char>> Tokenizer<T> {
     const MAX_INCLUDE_RECURSIONS: usize = 256;
 
     pub fn new(reader: T) -> Tokenizer<T> {
@@ -203,14 +220,16 @@ impl<T: Iterator<Item=char>> Tokenizer<T> {
             None => {
                 self.pushback = Some(c);
                 true
-            },
+            }
             Some(_) => false,
         }
     }
 
     pub fn push_reader(&mut self, rc: ResumableChars) -> Result<(), ErrorType> {
         if self.reader_stack.len() > Self::MAX_INCLUDE_RECURSIONS {
-            Err(ErrorType::new(ErrorKind::TooManyRecursions(self.reader_stack.len())))
+            Err(ErrorType::new(ErrorKind::TooManyRecursions(
+                self.reader_stack.len(),
+            )))
         } else {
             self.reader_stack.push(rc);
             Ok(())
@@ -222,11 +241,10 @@ impl<T: Iterator<Item=char>> Tokenizer<T> {
             Some(c) => {
                 self.pushback = None;
                 Some(c)
-            },
+            }
             None => {
                 let mut ret = None;
                 let mut produced_idx: usize = 0;
-                let len = self.reader_stack.len();
 
                 for (idx, rc) in self.reader_stack.iter_mut().enumerate().rev() {
                     match rc.next() {
@@ -234,8 +252,8 @@ impl<T: Iterator<Item=char>> Tokenizer<T> {
                             ret = Some(c);
                             produced_idx = idx;
                             break;
-                        },
-                        None => {},
+                        }
+                        None => {}
                     }
                 }
 
@@ -243,10 +261,10 @@ impl<T: Iterator<Item=char>> Tokenizer<T> {
                     Some(c) => {
                         self.reader_stack.truncate(produced_idx + 1);
                         Some(c)
-                    },
+                    }
                     None => self.reader.next(),
                 }
-            },
+            }
         }
     }
 
@@ -298,7 +316,9 @@ impl<T: Iterator<Item=char>> Tokenizer<T> {
             loop {
                 let nc = self.next_char();
                 if nc == None {
-                    return Err(ErrorType::new(ErrorKind::UnexpectedEOF(Location::InInclude)));
+                    return Err(ErrorType::new(ErrorKind::UnexpectedEOF(
+                        Location::InInclude,
+                    )));
                 }
                 let ncc = nc.unwrap();
 
@@ -314,9 +334,9 @@ impl<T: Iterator<Item=char>> Tokenizer<T> {
                 Ok(f) => f,
             };
             let mut contents = String::new();
-            f.read_to_string(&mut contents);
+            f.read_to_string(&mut contents)?;
             self.push_reader(ResumableChars::new(contents))?;
-            return self.next_token()
+            return self.next_token();
         }
 
         /* Strings */
@@ -332,7 +352,9 @@ impl<T: Iterator<Item=char>> Tokenizer<T> {
                 if ncc == self.lexemes.esc_intro {
                     let ec = self.next_char();
                     if ec == None {
-                        return Err(ErrorType::new(ErrorKind::UnexpectedEOF(Location::InStringEscape)));
+                        return Err(ErrorType::new(ErrorKind::UnexpectedEOF(
+                            Location::InStringEscape,
+                        )));
                     }
                     let ecc = ec.unwrap();
 
@@ -341,7 +363,9 @@ impl<T: Iterator<Item=char>> Tokenizer<T> {
                         loop {
                             let sc = self.next_char();
                             if None == sc {
-                                return Err(ErrorType::new(ErrorKind::UnexpectedEOF(Location::InStringEscape)));
+                                return Err(ErrorType::new(ErrorKind::UnexpectedEOF(
+                                    Location::InStringEscape,
+                                )));
                             }
                             let scc = sc.unwrap();
 
@@ -354,12 +378,22 @@ impl<T: Iterator<Item=char>> Tokenizer<T> {
                         }
                         let rc = u32::from_str_radix(&value, 16);
                         if let Err(err) = rc {
-                            return Err(ErrorType::new(ErrorKind::BadEscapeValue(EscapeKind::Hexadecimal, value, Some(Box::new(err)))));
+                            return Err(ErrorType::new(ErrorKind::BadEscapeValue(
+                                EscapeKind::Hexadecimal,
+                                value,
+                                Some(Box::new(err)),
+                            )));
                         }
                         let rc = ::std::char::from_u32(rc.unwrap());
                         match rc {
                             Some(rcc) => buffer.push(rcc),
-                            None => return Err(ErrorType::new(ErrorKind::BadEscapeValue(EscapeKind::Hexadecimal, value, None))),
+                            None => {
+                                return Err(ErrorType::new(ErrorKind::BadEscapeValue(
+                                    EscapeKind::Hexadecimal,
+                                    value,
+                                    None,
+                                )))
+                            }
                         }
                         continue;
                     }
@@ -369,7 +403,9 @@ impl<T: Iterator<Item=char>> Tokenizer<T> {
                         loop {
                             let sc = self.next_char();
                             if None == sc {
-                                return Err(ErrorType::new(ErrorKind::UnexpectedEOF(Location::InStringEscape)));
+                                return Err(ErrorType::new(ErrorKind::UnexpectedEOF(
+                                    Location::InStringEscape,
+                                )));
                             }
                             let scc = sc.unwrap();
 
@@ -382,12 +418,22 @@ impl<T: Iterator<Item=char>> Tokenizer<T> {
                         }
                         let rc = u32::from_str_radix(&value, 8);
                         if let Err(err) = rc {
-                            return Err(ErrorType::new(ErrorKind::BadEscapeValue(EscapeKind::Octal, value, Some(Box::new(err)))));
+                            return Err(ErrorType::new(ErrorKind::BadEscapeValue(
+                                EscapeKind::Octal,
+                                value,
+                                Some(Box::new(err)),
+                            )));
                         }
                         let rc = ::std::char::from_u32(rc.unwrap());
                         match rc {
                             Some(rcc) => buffer.push(rcc),
-                            None => return Err(ErrorType::new(ErrorKind::BadEscapeValue(EscapeKind::Octal, value, None))),
+                            None => {
+                                return Err(ErrorType::new(ErrorKind::BadEscapeValue(
+                                    EscapeKind::Octal,
+                                    value,
+                                    None,
+                                )))
+                            }
                         }
                         continue;
                     }
@@ -459,12 +505,20 @@ impl<T: Iterator<Item=char>> Tokenizer<T> {
             return if floating {
                 match buffer.parse::<f32>() {
                     Ok(v) => Ok(Token::Float(v)),
-                    Err(err) => Err(ErrorType::new(ErrorKind::BadNumericLiteral(NumericKind::Float, buffer, Some(Box::new(err))))),
+                    Err(err) => Err(ErrorType::new(ErrorKind::BadNumericLiteral(
+                        NumericKind::Float,
+                        buffer,
+                        Some(Box::new(err)),
+                    ))),
                 }
             } else {
                 match buffer.parse::<isize>() {
                     Ok(v) => Ok(Token::Integer(v)),
-                    Err(err) => Err(ErrorType::new(ErrorKind::BadNumericLiteral(NumericKind::Integer, buffer, Some(Box::new(err))))),
+                    Err(err) => Err(ErrorType::new(ErrorKind::BadNumericLiteral(
+                        NumericKind::Integer,
+                        buffer,
+                        Some(Box::new(err)),
+                    ))),
                 }
             };
         }
@@ -497,7 +551,7 @@ impl<T: Iterator<Item=char>> Tokenizer<T> {
     }
 }
 
-impl<T: Iterator<Item=char>> Iterator for Tokenizer<T> {
+impl<T: Iterator<Item = char>> Iterator for Tokenizer<T> {
     type Item = Token;
 
     fn next(&mut self) -> Option<Token> {
diff --git a/src/lib.rs b/src/lib.rs
index 0e9672a..abcd44c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -7,12 +7,12 @@ extern crate xml;
 pub mod types;
 pub use types::*;
 
-pub mod synth;
-pub mod proto;
-pub mod lang;
 pub mod client;
+pub mod lang;
 pub mod monitor;
 pub mod seq;
+pub mod proto;
+pub mod synth;
 
 #[cfg(feature = "graphics")]
 pub mod graphics;
@@ -20,6 +20,5 @@ pub mod graphics;
 #[cfg(test)]
 mod tests {
     #[test]
-    fn it_works() {
-    }
+    fn it_works() {}
 }
diff --git a/src/main.rs b/src/main.rs
index 9c61733..38c2e78 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,26 +1,19 @@
-use std::{io, env, thread, iter, time, mem, ffi};
-use std::io::*;
-use std::fs::*;
+use std::collections::VecDeque;
+use std::fs::File;
+use std::io::Read;
 use std::net::*;
 use std::sync::*;
-use std::collections::VecDeque;
+use std::{env, iter, thread, ffi};
 
-extern crate synfone;
 extern crate portaudio;
-// #[macro_use]
-// extern crate glium;
-// use glium::{glutin, Surface};
-// use glium::index::PrimitiveType;
-// extern crate palette;
-// use palette::IntoColor;
 use portaudio as pa;
-use synfone::*;
-use synfone::synth::*;
+use synfone::client::*;
 use synfone::lang::*;
 use synfone::proto::*;
-use synfone::client::*;
+use synfone::synth::*;
+use synfone::*;
 
-fn main() {
+fn main() -> Result<(), std::io::Error> {
     let cmd = env::args_os().nth(1).expect("Please pass a command as the first argument; use `help` as a command for more information.");
     let cmds = cmd.into_string().expect("Couldn't parse command");
 
@@ -28,60 +21,82 @@ fn main() {
 
     match &*cmds {
         "help" => eprintln!("TODO! Commands are help, client."),
-        "client" => main_client(new_args),
+        "client" => main_client(new_args)?,
         _ => eprintln!("Unknown command; `help` for help."),
     }
+    Ok(())
 }
 
 
-const GFX: bool = false;
-
-fn main_client(args: Vec<ffi::OsString>) {
+fn main_client(args: Vec<ffi::OsString>) -> Result<(), std::io::Error> {
     let env = Environment::default();
 
     let mut genfile = File::open(args.iter().nth(1).expect("Need first argument to be a file with a generator vector")).expect("Failed to open file");
     let mut genstr = String::new();
-    genfile.read_to_string(&mut genstr);
+    genfile.read_to_string(&mut genstr)?;
 
-    let gens = Parser::new(Tokenizer::new(genstr.chars()), env.clone()).expect("Failed to get first token").parse_gen_vec().expect("Failed to compile generators");
+    let gens = Parser::new(Tokenizer::new(genstr.chars()), env.clone())
+        .expect("Failed to get first token")
+        .parse_gen_vec()
+        .expect("Failed to compile generators");
     let sock = UdpSocket::bind("0.0.0.0:13676").expect("Failed to bind socket");
 
     eprintln!("Parsed {} generator definitions", gens.len());
 
-    let mut client = Arc::new(Mutex::new(Client::new(sock.try_clone().expect("Failed to clone socket"), gens, env.clone()).expect("Failed to create client")));
-    let mut last_buffer = Arc::new(Mutex::new(<VecDeque<Sample>>::with_capacity(env.default_buffer_size * 9)));
+    let client = Arc::new(Mutex::new(
+        Client::new(
+            sock.try_clone().expect("Failed to clone socket"),
+            gens,
+            env.clone(),
+        )
+        .expect("Failed to create client"),
+    ));
+    let last_buffer = Arc::new(Mutex::new(<VecDeque<Sample>>::with_capacity(
+        env.default_buffer_size * 9,
+    )));
     let last_buffer_lim = env.default_buffer_size * 8;
-    last_buffer.lock().expect("Failed to init shared buffer").append(&mut iter::repeat(0.0f32).take(last_buffer_lim).collect());
+    last_buffer
+        .lock()
+        .expect("Failed to init shared buffer")
+        .append(&mut iter::repeat(0.0f32).take(last_buffer_lim).collect());
 
     let pa_inst = pa::PortAudio::new().expect("Failed to create PortAudio interface");
-    let settings = pa_inst.default_output_stream_settings(1, env.sample_rate as f64, env.default_buffer_size as u32).expect("Failed to instantiate stream settings");
+    let settings = pa_inst
+        .default_output_stream_settings(1, env.sample_rate as f64, env.default_buffer_size as u32)
+        .expect("Failed to instantiate stream settings");
     let mut stream;
     {
         let client = client.clone();
         let last_buffer = last_buffer.clone();
         let mut ring: VecDeque<Sample> = VecDeque::new();
         ring.reserve_exact(2 * env.default_buffer_size);
-        stream = pa_inst.open_non_blocking_stream(settings, move |pa::OutputStreamCallbackArgs { buffer, frames, .. }| {
-            while frames > ring.len() {
-                let mut cli = client.lock().unwrap();
-                cli.next_frames();
-                {
-                    let mut buf = last_buffer.lock().expect("Failed to acquire shared buffer in audio callback");
-                    buf.append(&mut cli.buffer().samples.iter().map(|&x| x).collect());
-                    let len = buf.len();
-                    if len > last_buffer_lim {
-                        buf.drain(..(len - last_buffer_lim));
+        stream = pa_inst
+            .open_non_blocking_stream(
+                settings,
+                move |pa::OutputStreamCallbackArgs { buffer, frames, .. }| {
+                    while frames > ring.len() {
+                        let mut cli = client.lock().unwrap();
+                        cli.next_frames();
+                        {
+                            let mut buf = last_buffer
+                                .lock()
+                                .expect("Failed to acquire shared buffer in audio callback");
+                            buf.append(&mut cli.buffer().samples.iter().map(|&x| x).collect());
+                            let len = buf.len();
+                            if len > last_buffer_lim {
+                                buf.drain(..(len - last_buffer_lim));
+                            }
+                        }
+                        ring.append(&mut cli.buffer().iter().map(|&x| x).collect());
                     }
-                }
-                ring.append(&mut cli.buffer().iter().map(|&x| x).collect());
-            }
-            let samps = ring.drain(..frames).collect::<Vec<f32>>();
-            buffer.copy_from_slice(&samps);
-            pa::Continue
-        }).expect("Failed to create stream");
+                    let samps = ring.drain(..frames).collect::<Vec<f32>>();
+                    buffer.copy_from_slice(&samps);
+                    pa::Continue
+                },
+            )
+            .expect("Failed to create stream");
     }
 
-
     eprintln!("Starting.");
 
     stream.start().expect("Failed to start stream");
@@ -115,4 +130,6 @@ fn main_client(args: Vec<ffi::OsString>) {
     net_thread.join().expect("Network thread panicked");
 
     eprintln!("Exiting.");
+
+    Ok(())
 }
diff --git a/src/monitor.rs b/src/monitor.rs
index ffe688a..bde5b37 100644
--- a/src/monitor.rs
+++ b/src/monitor.rs
@@ -1,6 +1,6 @@
 use super::*;
-use synth::SampleBuffer;
 use std::collections::HashMap;
+use synth::SampleBuffer;
 
 pub struct VoiceDatum {
     pitch: Pitch,
@@ -35,4 +35,4 @@ pub trait Monitor {
     fn process(&mut self, data: &Data);
 }
 
-pub type MonBox = Box<Monitor>;
+pub type MonBox = Box<dyn Monitor>;
diff --git a/src/proto.rs b/src/proto.rs
index 21e8903..2bf13a6 100644
--- a/src/proto.rs
+++ b/src/proto.rs
@@ -1,6 +1,6 @@
-use std::{mem, fmt};
+use super::Pitch;
 use std::time::Duration;
-use super::*;
+use std::fmt;
 
 use ::byteorder::{ByteOrder, NetworkEndian};
 
@@ -9,7 +9,9 @@ const OBLIGATE_POLYPHONE: u32 = 0xffffffff;
 
 pub enum Command {
     KeepAlive,
-    Ping{data: [u8; 32]},
+    Ping {
+        data: [u8; 32],
+    },
     Quit,
     Play{sec: u32, usec: u32, freq: u32, amp: f32, voice: u32},
     Caps{voices: u32, tp: [u8; 4], ident: [u8; 24]},
@@ -24,14 +26,14 @@ impl Command {
 
     pub fn duration(&self) -> Option<Duration> {
         match *self {
-            Command::Play{sec, usec, ..} => Some(Duration::new(sec as u64, usec * 1000)),
+            Command::Play { sec, usec, .. } => Some(Duration::new(sec as u64, usec * 1000)),
             _ => None,
         }
     }
 
     pub fn pitch(&self) -> Option<Pitch> {
         match *self {
-            Command::Play{freq, ..} => Some(Pitch::Freq(freq as f32)),
+            Command::Play { freq, .. } => Some(Pitch::Freq(freq as f32)),
             _ => None,
         }
     }
@@ -43,22 +45,28 @@ impl Command {
 
         match *self {
             Command::KeepAlive => NetworkEndian::write_u32(&mut ret[..4], 0),
-            Command::Ping{data} => {
+            Command::Ping { data } => {
                 NetworkEndian::write_u32(&mut ret[..4], 1);
                 (&mut ret[4..]).copy_from_slice(&data);
-            },
+            }
             Command::Quit => NetworkEndian::write_u32(&mut ret[..4], 2),
-            Command::Play{sec, usec, freq, amp, voice} => {
+            Command::Play {
+                sec,
+                usec,
+                freq,
+                amp,
+                voice,
+            } => {
                 NetworkEndian::write_u32_into(&[3u32, sec, usec, freq], &mut ret[..16]);
                 NetworkEndian::write_f32(&mut ret[16..20], amp);
                 NetworkEndian::write_u32(&mut ret[20..24], voice);
-            },
-            Command::Caps{voices, tp, ident} => {
+            }
+            Command::Caps { voices, tp, ident } => {
                 NetworkEndian::write_u32_into(&[4u32, voices], &mut ret[..8]);
                 (&mut ret[8..12]).copy_from_slice(&tp);
                 (&mut ret[12..]).copy_from_slice(&ident);
-            },
-            Command::PCM{samples} => {
+            }
+            Command::PCM { samples } => {
                 NetworkEndian::write_u32(&mut ret[..4], 5);
                 NetworkEndian::write_i16_into(&samples, &mut ret[4..]);
             },
@@ -71,7 +79,7 @@ impl Command {
             },
             Command::Unknown{data} => {
                 ret.copy_from_slice(&data);
-            },
+            }
         };
 
         true
@@ -83,7 +91,7 @@ impl fmt::Debug for Command {
         f.write_str("Command::")?;
         match *self {
             Command::KeepAlive => f.write_str("KeepAlive"),
-            Command::Ping{data} => f.debug_struct("Ping").field("data", &data).finish(),
+            Command::Ping { data } => f.debug_struct("Ping").field("data", &data).finish(),
             Command::Quit => f.write_str("Quit"),
             Command::Play{sec, usec, freq, amp, voice} => f.debug_struct("Play").field("sec", &sec).field("usec", &usec).field("freq", &freq).field("amp", &amp).field("voice", &voice).finish(),
             Command::Caps{voices, tp, ident} => f.debug_struct("Caps").field("voices", &voices).field("tp", &tp).field("ident", &ident).finish(),
@@ -97,20 +105,20 @@ impl fmt::Debug for Command {
 
 impl<'a> From<&'a [u8; Command::SIZE]> for Command {
     fn from(packet: &'a [u8; Command::SIZE]) -> Command {
-        let mut fields_u32: [u32; Command::SIZE / 4] = unsafe { mem::uninitialized() };
-        let mut fields_f32: [f32; Command::SIZE / 4] = unsafe { mem::uninitialized() };
+        let mut fields_u32: [u32; Command::SIZE / 4] = [0; Command::SIZE / 4];
+        let mut fields_f32: [f32; Command::SIZE / 4] = [0.0; Command::SIZE / 4];
         NetworkEndian::read_u32_into(packet, &mut fields_u32);
-        unsafe { NetworkEndian::read_f32_into_unchecked(packet, &mut fields_f32); }
+        NetworkEndian::read_f32_into(packet, &mut fields_f32);
 
         match fields_u32[0] {
             0 => Command::KeepAlive,
             1 => {
-                let mut data: [u8; 32] = unsafe { mem::uninitialized() };
+                let mut data: [u8; 32] = [0; 32];
                 data.copy_from_slice(&packet[4..]);
-                Command::Ping{data: data}
+                Command::Ping { data: data }
             }
             2 => Command::Quit,
-            3 => Command::Play{
+            3 => Command::Play {
                 sec: fields_u32[1],
                 usec: fields_u32[2],
                 freq: fields_u32[3],
@@ -118,18 +126,18 @@ impl<'a> From<&'a [u8; Command::SIZE]> for Command {
                 voice: fields_u32[5],
             },
             4 => {
-                let mut tp: [u8; 4] = unsafe { mem::uninitialized() };
-                let mut ident: [u8; 24] = unsafe { mem::uninitialized() };
+                let mut tp: [u8; 4] = [0; 4];
+                let mut ident: [u8; 24] = [0; 24];
                 tp.copy_from_slice(&packet[8..12]);
                 ident.copy_from_slice(&packet[12..]);
-                Command::Caps{
+                Command::Caps {
                     voices: fields_u32[1],
                     tp: tp,
                     ident: ident,
                 }
-            },
+            }
             5 => {
-                let mut samples: [i16; 16] = unsafe { mem::uninitialized() };
+                let mut samples: [i16; 16] = [0; 16];
                 ::byteorder::LittleEndian::read_i16_into(&packet[4..], &mut samples);
                 Command::PCM{samples: samples}
             },
@@ -140,9 +148,9 @@ impl<'a> From<&'a [u8; Command::SIZE]> for Command {
                 value: fields_f32[3],
             },
             _ => {
-                let mut data: [u8; Command::SIZE] = unsafe { mem::uninitialized() };
+                let mut data: [u8; Command::SIZE] = [0; Command::SIZE];
                 data.copy_from_slice(packet);
-                Command::Unknown{data: data}
+                Command::Unknown { data: data }
             }
         }
     }
diff --git a/src/seq/file/iv.rs b/src/seq/file/iv.rs
index 570f36d..de3f0b6 100644
--- a/src/seq/file/iv.rs
+++ b/src/seq/file/iv.rs
@@ -10,7 +10,6 @@ use std::cmp::Eq;
 use std::str::FromStr;
 use std::fmt::Display;
 use failure::Error;
-use super::*;
 
 struct AttrMapping(HashMap<String, String>);
 
diff --git a/src/seq/file/mod.rs b/src/seq/file/mod.rs
index 12662f8..f6fd39a 100644
--- a/src/seq/file/mod.rs
+++ b/src/seq/file/mod.rs
@@ -1,4 +1,3 @@
 //pub mod iv;
 //pub mod midi;
 
-use super::*;
diff --git a/src/seq/sequencer.rs b/src/seq/sequencer.rs
index 2284656..753a2f1 100644
--- a/src/seq/sequencer.rs
+++ b/src/seq/sequencer.rs
@@ -1,4 +1,4 @@
-use super::*;
+use super::{NoteStream, Note, IV};
 
 pub fn coalesce<'a, I: Iterator<Item=&'a NoteStream>>(stream_iter: I) -> NoteStream {
     let mut output = NoteStream::new();
diff --git a/src/synth/adsr.rs b/src/synth/adsr.rs
index ca7be9c..e7dba5d 100644
--- a/src/synth/adsr.rs
+++ b/src/synth/adsr.rs
@@ -1,6 +1,9 @@
-use super::*;
+use super::{
+    mem, FactoryParameters, GenBox, GenFactoryError, Generator, GeneratorFactory, Parameters, Rate,
+    SampleBuffer,
+};
 
-#[derive(Debug,Clone,Copy,PartialEq,Eq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum Phase {
     Delay,
     Attack,
@@ -44,7 +47,7 @@ impl Generator for DAHDSR {
                 self.attack_cd = delay;
                 self.cur = 0.0;
             }
-        } else{
+        } else {
             self.phase = Phase::Release;
         }
 
@@ -55,7 +58,7 @@ impl Generator for DAHDSR {
                     if self.attack_cd <= 0.0 {
                         self.phase = Phase::Attack;
                     }
-                },
+                }
                 Phase::Attack => {
                     self.cur += attack;
                     if self.cur >= 1.0 {
@@ -63,36 +66,38 @@ impl Generator for DAHDSR {
                         self.phase = Phase::Hold;
                         self.decay_cd = hold;
                     }
-                },
+                }
                 Phase::Hold => {
                     self.decay_cd -= 1.0;
                     if self.decay_cd <= 0.0 {
                         self.phase = Phase::Decay;
                     }
-                },
+                }
                 Phase::Decay => {
                     self.cur -= decay;
                     if self.cur <= sustain {
                         self.cur = sustain;
                         self.phase = Phase::Sustain;
                     }
-                },
+                }
                 Phase::Sustain => {
                     self.cur = sustain;
-                },
+                }
                 Phase::Release => {
                     self.cur -= release;
                     if self.cur < 0.0 {
                         self.cur = 0.0;
                     }
-                },
+                }
             }
             *samp = self.cur;
         }
 
         &self.buf
     }
-    fn buffer(&self) -> &SampleBuffer { &self.buf }
+    fn buffer(&self) -> &SampleBuffer {
+        &self.buf
+    }
     fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
         mem::replace(&mut self.buf, buf)
     }
diff --git a/src/synth/logic.rs b/src/synth/logic.rs
index d5f9401..f6cb013 100644
--- a/src/synth/logic.rs
+++ b/src/synth/logic.rs
@@ -1,5 +1,8 @@
-use std::{mem, cmp};
-use super::*;
+use super::{
+    FactoryParameters, GenBox, GenFactoryError, Generator, GeneratorFactory, Parameters, Rate,
+    SampleBuffer,
+};
+use std::{cmp, mem};
 
 #[derive(Debug)]
 pub struct IfElse {
@@ -14,11 +17,10 @@ impl Generator for IfElse {
         let cond_buf = self.cond.eval(params);
         let iftrue_buf = self.iftrue.eval(params);
         let iffalse_buf = self.iffalse.eval(params);
-        
-        if
-            cond_buf.rate == Rate::Control &&
-            iftrue_buf.rate == Rate::Control &&
-            iffalse_buf.rate == Rate::Control
+
+        if cond_buf.rate == Rate::Control
+            && iftrue_buf.rate == Rate::Control
+            && iffalse_buf.rate == Rate::Control
         {
             self.buf.set(if cond_buf.first() >= 0.5 {
                 iftrue_buf.first()
@@ -31,9 +33,15 @@ impl Generator for IfElse {
         self.buf.rate = Rate::Sample;
 
         let mut bound = self.buf.len();
-        if cond_buf.rate == Rate::Sample { bound = cmp::min(bound, cond_buf.len()); }
-        if iftrue_buf.rate == Rate::Sample { bound = cmp::min(bound, iftrue_buf.len()); }
-        if iffalse_buf.rate == Rate::Sample { bound = cmp::min(bound, iffalse_buf.len()); }
+        if cond_buf.rate == Rate::Sample {
+            bound = cmp::min(bound, cond_buf.len());
+        }
+        if iftrue_buf.rate == Rate::Sample {
+            bound = cmp::min(bound, iftrue_buf.len());
+        }
+        if iffalse_buf.rate == Rate::Sample {
+            bound = cmp::min(bound, iffalse_buf.len());
+        }
 
         for i in 0..bound {
             let tv = match iftrue_buf.rate {
@@ -48,16 +56,14 @@ impl Generator for IfElse {
                 Rate::Sample => cond_buf[i],
                 Rate::Control => cond_buf.first(),
             };
-            self.buf[i] = if cv >= 0.5 {
-                tv
-            } else {
-                fv
-            };
+            self.buf[i] = if cv >= 0.5 { tv } else { fv };
         }
 
         &self.buf
     }
-    fn buffer(&self) -> &SampleBuffer { &self.buf }
+    fn buffer(&self) -> &SampleBuffer {
+        &self.buf
+    }
     fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
         mem::replace(&mut self.buf, buf)
     }
@@ -70,8 +76,16 @@ impl GeneratorFactory for IfElseFactory {
         let cond = params.remove_param("cond", 0)?.into_gen()?;
         let iftrue = params.remove_param("iftrue", 1)?.into_gen()?;
         let iffalse = params.remove_param("iffalse", 2)?.into_gen()?;
-        let buf = SampleBuffer::new(cmp::max(cmp::max(cond.buffer().len(), iftrue.buffer().len()), iffalse.buffer().len()));
-        Ok(Box::new(IfElse { cond: cond, iftrue: iftrue, iffalse: iffalse, buf: buf }))
+        let buf = SampleBuffer::new(cmp::max(
+            cmp::max(cond.buffer().len(), iftrue.buffer().len()),
+            iffalse.buffer().len(),
+        ));
+        Ok(Box::new(IfElse {
+            cond: cond,
+            iftrue: iftrue,
+            iffalse: iffalse,
+            buf: buf,
+        }))
     }
 }
 
diff --git a/src/synth/lut.rs b/src/synth/lut.rs
index 73b5efa..deda6d9 100644
--- a/src/synth/lut.rs
+++ b/src/synth/lut.rs
@@ -1,4 +1,7 @@
-use super::*;
+use super::{
+    mem, FactoryParameters, GenBox, GenFactoryError, Generator, GeneratorFactory, ParamValue,
+    Parameters, Rate, Sample, SampleBuffer,
+};
 
 #[derive(Debug)]
 pub struct Lut {
@@ -14,13 +17,16 @@ impl Generator for Lut {
 
         let pvel = self.freq.eval(params).first() / params.env.sample_rate;
         for i in 0..self.buf.len() {
-            self.buf[i] = self.lut[(((self.phase + pvel * (i as f32)) % 1.0) * (self.lut.len() as f32)) as usize];
+            self.buf[i] = self.lut
+                [(((self.phase + pvel * (i as f32)) % 1.0) * (self.lut.len() as f32)) as usize];
         }
 
         self.phase = (self.phase + pvel * (self.buf.len() as f32)) % 1.0;
         &self.buf
     }
-    fn buffer(&self) -> &SampleBuffer { &self.buf }
+    fn buffer(&self) -> &SampleBuffer {
+        &self.buf
+    }
     fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
         mem::replace(&mut self.buf, buf)
     }
@@ -32,7 +38,9 @@ impl GeneratorFactory for LutDataFactory {
     fn new(&self, params: &mut FactoryParameters) -> Result<GenBox, GenFactoryError> {
         Ok(Box::new(Lut {
             freq: params.remove_param("freq", 0)?.into_gen()?,
-            phase: params.get_param("phase", 1, &mut ParamValue::Float(0.0)).as_f32()?,
+            phase: params
+                .get_param("phase", 1, &mut ParamValue::Float(0.0))
+                .as_f32()?,
             buf: SampleBuffer::new(params.env.default_buffer_size),
             lut: {
                 let mut lut: Vec<Sample> = Vec::new();
@@ -44,7 +52,10 @@ impl GeneratorFactory for LutDataFactory {
                 }
 
                 if lut.is_empty() {
-                    return Err(GenFactoryError::MissingRequiredParam("samples".to_string(), 2));
+                    return Err(GenFactoryError::MissingRequiredParam(
+                        "samples".to_string(),
+                        2,
+                    ));
                 }
 
                 lut
@@ -62,13 +73,20 @@ impl GeneratorFactory for LutGenFactory {
         eprintln!("LutGenFactory::new({:?})", params);
         Ok(Box::new(Lut {
             freq: params.remove_param("freq", 2)?.into_gen()?,
-            phase: params.get_param("phase", 3, &mut ParamValue::Float(0.0)).as_f32()?,
+            phase: params
+                .get_param("phase", 3, &mut ParamValue::Float(0.0))
+                .as_f32()?,
             buf: SampleBuffer::new(params.env.default_buffer_size),
             lut: {
                 let mut gen = params.remove_param("gen", 0)?.into_gen()?;
                 let samps = params.get_req_param("samples", 1)?.as_f32()?;
-                let var = params.get_param("var", 4, &mut ParamValue::String("lut_freq".to_string())).as_string()?;
-                let mut genparams = Parameters { env: params.env.clone(), ..Default::default() };
+                let var = params
+                    .get_param("var", 4, &mut ParamValue::String("lut_freq".to_string()))
+                    .as_string()?;
+                let mut genparams = Parameters {
+                    env: params.env.clone(),
+                    ..Default::default()
+                };
                 genparams.env.sample_rate = samps;
                 genparams.vars.insert(var, 1.0);
 
diff --git a/src/synth/math.rs b/src/synth/math.rs
index 1889139..c73c0c4 100644
--- a/src/synth/math.rs
+++ b/src/synth/math.rs
@@ -1,4 +1,7 @@
-use super::*;
+use super::{
+    FactoryParameters, GenBox, GenFactoryError, Generator, GeneratorFactory, Parameters, Rate,
+    SampleBuffer,
+};
 use std::mem;
 
 #[derive(Debug)]
@@ -20,7 +23,9 @@ impl Generator for Add {
         }
         &self.buf
     }
-    fn buffer(&self) -> &SampleBuffer { &self.buf }
+    fn buffer(&self) -> &SampleBuffer {
+        &self.buf
+    }
     fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
         mem::replace(&mut self.buf, buf)
     }
@@ -31,7 +36,11 @@ pub struct AddFactory;
 impl GeneratorFactory for AddFactory {
     fn new(&self, params: &mut FactoryParameters) -> Result<GenBox, GenFactoryError> {
         Ok(Box::new(Add {
-            terms: params.get_pos_params().into_iter().map(|x| x.into_gen()).collect::<Result<Vec<_>, _>>()?,
+            terms: params
+                .get_pos_params()
+                .into_iter()
+                .map(|x| x.into_gen())
+                .collect::<Result<Vec<_>, _>>()?,
             buf: SampleBuffer::new(params.env.default_buffer_size),
         }))
     }
@@ -58,7 +67,9 @@ impl Generator for Mul {
         }
         &self.buf
     }
-    fn buffer(&self) -> &SampleBuffer { &self.buf }
+    fn buffer(&self) -> &SampleBuffer {
+        &self.buf
+    }
     fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
         mem::replace(&mut self.buf, buf)
     }
@@ -69,7 +80,11 @@ pub struct MulFactory;
 impl GeneratorFactory for MulFactory {
     fn new(&self, params: &mut FactoryParameters) -> Result<GenBox, GenFactoryError> {
         Ok(Box::new(Mul {
-            factors: params.get_pos_params().into_iter().map(|x| x.into_gen()).collect::<Result<Vec<_>, _>>()?,
+            factors: params
+                .get_pos_params()
+                .into_iter()
+                .map(|x| x.into_gen())
+                .collect::<Result<Vec<_>, _>>()?,
             buf: SampleBuffer::new(params.env.default_buffer_size),
         }))
     }
@@ -91,14 +106,16 @@ impl Generator for Negate {
                 for v in self.buf.iter_mut() {
                     *v *= -1.0;
                 }
-            },
+            }
             Rate::Control => {
                 self.buf[0] *= -1.0;
-            },
+            }
         }
         &self.buf
     }
-    fn buffer(&self) -> &SampleBuffer { &self.buf }
+    fn buffer(&self) -> &SampleBuffer {
+        &self.buf
+    }
     fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
         mem::replace(&mut self.buf, buf)
     }
@@ -133,14 +150,16 @@ impl Generator for Reciprocate {
                 for v in self.buf.iter_mut() {
                     *v = v.powf(-1.0);
                 }
-            },
+            }
             Rate::Control => {
                 self.buf[0] = self.buf[0].powf(-1.0);
-            },
+            }
         }
         &self.buf
     }
-    fn buffer(&self) -> &SampleBuffer { &self.buf }
+    fn buffer(&self) -> &SampleBuffer {
+        &self.buf
+    }
     fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
         mem::replace(&mut self.buf, buf)
     }
diff --git a/src/synth/mod.rs b/src/synth/mod.rs
index 862ca38..b832863 100644
--- a/src/synth/mod.rs
+++ b/src/synth/mod.rs
@@ -1,15 +1,15 @@
 #![allow(non_upper_case_globals)]
 
-use std::{iter, cmp, slice, mem, fmt};
-use std::fmt::Debug;
+use super::Sample;
+use std::collections::HashMap;
 use std::error::Error;
+use std::fmt::Debug;
 use std::ops::{Index, IndexMut};
-use std::collections::HashMap;
-use super::*;
+use std::{cmp, fmt, iter, mem, slice};
 
 use ::byteorder::ByteOrder;
 
-#[derive(PartialEq,Eq,Clone,Copy,Debug)]
+#[derive(PartialEq, Eq, Clone, Copy, Debug)]
 pub enum Rate {
     Sample,
     Control,
@@ -21,7 +21,7 @@ pub struct SampleBuffer {
     pub rate: Rate,
 }
 
-#[derive(Debug,Clone)]
+#[derive(Debug, Clone)]
 pub struct Environment {
     pub sample_rate: f32,
     pub default_buffer_size: usize,
@@ -87,10 +87,10 @@ impl SampleBuffer {
             Rate::Sample => {
                 let len = cmp::min(self.len(), other.len());
                 self.samples[..len].clone_from_slice(&other.samples[..len]);
-            },
+            }
             Rate::Control => {
                 self.samples[0] = other.samples[0];
-            },
+            }
         }
     }
 
@@ -109,10 +109,10 @@ impl SampleBuffer {
                         }
                     }
                 };
-            },
+            }
             Rate::Control => {
                 self.samples[0] += other.samples[0];
-            },
+            }
         }
     }
 
@@ -131,10 +131,10 @@ impl SampleBuffer {
                         }
                     }
                 };
-            },
+            }
             Rate::Control => {
                 self.samples[0] *= other.samples[0];
-            },
+            }
         }
     }
 
@@ -156,11 +156,15 @@ impl SampleBuffer {
 
 impl Index<usize> for SampleBuffer {
     type Output = Sample;
-    fn index(&self, idx: usize) -> &Sample { &self.samples[idx] }
+    fn index(&self, idx: usize) -> &Sample {
+        &self.samples[idx]
+    }
 }
 
 impl IndexMut<usize> for SampleBuffer {
-    fn index_mut(&mut self, idx: usize) -> &mut Sample { &mut self.samples[idx] }
+    fn index_mut(&mut self, idx: usize) -> &mut Sample {
+        &mut self.samples[idx]
+    }
 }
 
 impl Clone for SampleBuffer {
@@ -172,13 +176,13 @@ impl Clone for SampleBuffer {
     }
 }
 
-pub trait Generator : Debug + Send {
+pub trait Generator: Debug + Send {
     fn eval<'a>(&'a mut self, params: &Parameters) -> &'a SampleBuffer;
     fn buffer(&self) -> &SampleBuffer;
     fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer;
 }
 
-pub type GenBox = Box<Generator>;
+pub type GenBox = Box<dyn Generator>;
 
 #[derive(Debug)]
 pub enum GenFactoryError {
@@ -190,7 +194,7 @@ pub enum GenFactoryError {
 #[derive(Debug)]
 pub struct GenFactoryErrorType {
     pub kind: GenFactoryError,
-    desc: String
+    desc: String,
 }
 
 impl GenFactoryErrorType {
@@ -201,8 +205,12 @@ impl GenFactoryErrorType {
         };
 
         ret.desc = match ret.kind {
-            GenFactoryError::MissingRequiredParam(ref name, pos) => format!("Needed a parameter named {} or at pos {}", name, pos),
-            GenFactoryError::CannotConvert(from, to) => format!("Cannot convert {:?} to {:?}", from, to),
+            GenFactoryError::MissingRequiredParam(ref name, pos) => {
+                format!("Needed a parameter named {} or at pos {}", name, pos)
+            }
+            GenFactoryError::CannotConvert(from, to) => {
+                format!("Cannot convert {:?} to {:?}", from, to)
+            }
             GenFactoryError::BadType(ty) => format!("Bad parameter type {:?}", ty),
         };
 
@@ -231,17 +239,17 @@ impl Error for GenFactoryErrorType {
 
 impl fmt::Display for GenFactoryErrorType {
     fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
-        write!(f, "{}", self.description())
+        write!(f, "{}", self.to_string())
     }
 }
 
-impl Into<Box<Error>> for GenFactoryError {
-    fn into(self) -> Box<Error> {
+impl Into<Box<dyn Error>> for GenFactoryError {
+    fn into(self) -> Box<dyn Error> {
         Box::new(GenFactoryErrorType::new(self))
     }
 }
 
-#[derive(Debug,PartialEq,Eq,Clone,Copy)]
+#[derive(Debug, PartialEq, Eq, Clone, Copy)]
 pub enum ParamKind {
     Integer,
     Float,
@@ -271,7 +279,9 @@ impl ParamValue {
         match *self {
             ParamValue::Integer(v) => Ok(v),
             ParamValue::Float(v) => Ok(v as isize),
-            ParamValue::String(ref v) => v.parse().map_err(|_| GenFactoryError::CannotConvert(ParamKind::String, ParamKind::Integer)),
+            ParamValue::String(ref v) => v
+                .parse()
+                .map_err(|_| GenFactoryError::CannotConvert(ParamKind::String, ParamKind::Integer)),
             ParamValue::Generator(ref mut g) => Ok(g.eval(&Default::default()).first() as isize),
         }
     }
@@ -280,7 +290,9 @@ impl ParamValue {
         match *self {
             ParamValue::Integer(v) => Ok(v as f32),
             ParamValue::Float(v) => Ok(v),
-            ParamValue::String(ref v) => v.parse().map_err(|_| GenFactoryError::CannotConvert(ParamKind::String, ParamKind::Float)),
+            ParamValue::String(ref v) => v
+                .parse()
+                .map_err(|_| GenFactoryError::CannotConvert(ParamKind::String, ParamKind::Float)),
             ParamValue::Generator(ref mut g) => Ok(g.eval(&Default::default()).first()),
         }
     }
@@ -290,15 +302,29 @@ impl ParamValue {
             ParamValue::Integer(v) => Ok(v.to_string()),
             ParamValue::Float(v) => Ok(v.to_string()),
             ParamValue::String(ref v) => Ok(v.clone()),
-            ParamValue::Generator(_) => Err(GenFactoryError::CannotConvert(ParamKind::Generator, ParamKind::String)),
+            ParamValue::Generator(_) => Err(GenFactoryError::CannotConvert(
+                ParamKind::Generator,
+                ParamKind::String,
+            )),
         }
     }
 
     pub fn into_gen(self) -> Result<GenBox, GenFactoryError> {
         match self {
-            ParamValue::Integer(v) => Ok(Box::new(self::param::Param { name : "_".to_string(), default: v as f32, buf: SampleBuffer::new(1) })),
-            ParamValue::Float(v) => Ok(Box::new(self::param::Param { name : "_".to_string(), default: v, buf: SampleBuffer::new(1) })),
-            ParamValue::String(_) => Err(GenFactoryError::CannotConvert(ParamKind::String, ParamKind::Generator)),
+            ParamValue::Integer(v) => Ok(Box::new(self::param::Param {
+                name: "_".to_string(),
+                default: v as f32,
+                buf: SampleBuffer::new(1),
+            })),
+            ParamValue::Float(v) => Ok(Box::new(self::param::Param {
+                name: "_".to_string(),
+                default: v,
+                buf: SampleBuffer::new(1),
+            })),
+            ParamValue::String(_) => Err(GenFactoryError::CannotConvert(
+                ParamKind::String,
+                ParamKind::Generator,
+            )),
             ParamValue::Generator(g) => Ok(g),
         }
     }
@@ -310,37 +336,63 @@ impl<'a> From<&'a ParamValue> for ParamKind {
     }
 }
 
-#[derive(Debug,Default)]
+#[derive(Debug, Default)]
 pub struct FactoryParameters {
     pub env: Environment,
     pub vars: HashMap<String, ParamValue>,
 }
 
 impl FactoryParameters {
-    pub fn get_param<'a, 'b : 'a>(&'a mut self, name: &str, position: usize, default: &'b mut ParamValue) -> &'a mut ParamValue {
+    pub fn get_param<'a, 'b: 'a>(
+        &'a mut self,
+        name: &str,
+        position: usize,
+        default: &'b mut ParamValue,
+    ) -> &'a mut ParamValue {
         let position = position.to_string();
 
-        match (self.vars.contains_key(name), self.vars.contains_key(&position)) {
+        match (
+            self.vars.contains_key(name),
+            self.vars.contains_key(&position),
+        ) {
             (true, _) => self.vars.get_mut(name).unwrap(),
             (false, true) => self.vars.get_mut(&position).unwrap(),
             (false, false) => default,
         }
     }
 
-    pub fn get_req_param(&mut self, name: &str, position: usize) -> Result<&mut ParamValue, GenFactoryError> {
+    pub fn get_req_param(
+        &mut self,
+        name: &str,
+        position: usize,
+    ) -> Result<&mut ParamValue, GenFactoryError> {
         let pos = position.to_string();
 
         match (self.vars.contains_key(name), self.vars.contains_key(&pos)) {
             (true, _) => Ok(self.vars.get_mut(name).unwrap()),
             (false, true) => Ok(self.vars.get_mut(&pos).unwrap()),
-            (false, false) => Err(GenFactoryError::MissingRequiredParam(name.to_string(), position)),
+            (false, false) => Err(GenFactoryError::MissingRequiredParam(
+                name.to_string(),
+                position,
+            )),
         }
     }
 
-    pub fn remove_param(&mut self, name: &str, position: usize) -> Result<ParamValue, GenFactoryError> {
-        match self.vars.remove(name).or_else(|| self.vars.remove(&position.to_string())) {
+    pub fn remove_param(
+        &mut self,
+        name: &str,
+        position: usize,
+    ) -> Result<ParamValue, GenFactoryError> {
+        match self
+            .vars
+            .remove(name)
+            .or_else(|| self.vars.remove(&position.to_string()))
+        {
             Some(v) => Ok(v),
-            None => Err(GenFactoryError::MissingRequiredParam(name.to_string(), position)),
+            None => Err(GenFactoryError::MissingRequiredParam(
+                name.to_string(),
+                position,
+            )),
         }
     }
 
@@ -390,26 +442,77 @@ pub use self::noise::Noise;
 pub mod adsr;
 pub use self::adsr::DAHDSR;
 
-pub fn all_factories() -> HashMap<String, &'static GeneratorFactory> {
+pub fn all_factories() -> HashMap<String, &'static dyn GeneratorFactory> {
     let mut ret = HashMap::new();
 
-    ret.insert("param".to_string(), &self::param::Factory as &GeneratorFactory);
-    ret.insert("add".to_string(), &self::math::FactoryAdd as &GeneratorFactory);
-    ret.insert("mul".to_string(), &self::math::FactoryMul as &GeneratorFactory);
-    ret.insert("negate".to_string(), &self::math::FactoryNegate as &GeneratorFactory);
-    ret.insert("reciprocate".to_string(), &self::math::FactoryReciprocate as &GeneratorFactory);
-    ret.insert("rel".to_string(), &self::rel::Factory as &GeneratorFactory);
-    ret.insert("ifelse".to_string(), &self::logic::Factory as &GeneratorFactory);
-    ret.insert("controlrate".to_string(), &self::util::FactoryControlRate as &GeneratorFactory);
-    ret.insert("samplerate".to_string(), &self::util::FactorySampleRate as &GeneratorFactory);
-    ret.insert("lutdata".to_string(), &self::lut::FactoryLutData as &GeneratorFactory);
-    ret.insert("lutgen".to_string(), &self::lut::FactoryLutGen as &GeneratorFactory);
-    ret.insert("sine".to_string(), &self::sine::Factory as &GeneratorFactory);
-    ret.insert("saw".to_string(), &self::saw::Factory as &GeneratorFactory);
-    ret.insert("triangle".to_string(), &self::triangle::Factory as &GeneratorFactory);
-    ret.insert("square".to_string(), &self::square::Factory as &GeneratorFactory);
-    ret.insert("noise".to_string(), &self::noise::Factory as &GeneratorFactory);
-    ret.insert("dahdsr".to_string(), &self::adsr::Factory as &GeneratorFactory);
+    ret.insert(
+        "param".to_string(),
+        &self::param::Factory as &dyn GeneratorFactory,
+    );
+    ret.insert(
+        "add".to_string(),
+        &self::math::FactoryAdd as &dyn GeneratorFactory,
+    );
+    ret.insert(
+        "mul".to_string(),
+        &self::math::FactoryMul as &dyn GeneratorFactory,
+    );
+    ret.insert(
+        "negate".to_string(),
+        &self::math::FactoryNegate as &dyn GeneratorFactory,
+    );
+    ret.insert(
+        "reciprocate".to_string(),
+        &self::math::FactoryReciprocate as &dyn GeneratorFactory,
+    );
+    ret.insert(
+        "rel".to_string(),
+        &self::rel::Factory as &dyn GeneratorFactory,
+    );
+    ret.insert(
+        "ifelse".to_string(),
+        &self::logic::Factory as &dyn GeneratorFactory,
+    );
+    ret.insert(
+        "controlrate".to_string(),
+        &self::util::FactoryControlRate as &dyn GeneratorFactory,
+    );
+    ret.insert(
+        "samplerate".to_string(),
+        &self::util::FactorySampleRate as &dyn GeneratorFactory,
+    );
+    ret.insert(
+        "lutdata".to_string(),
+        &self::lut::FactoryLutData as &dyn GeneratorFactory,
+    );
+    ret.insert(
+        "lutgen".to_string(),
+        &self::lut::FactoryLutGen as &dyn GeneratorFactory,
+    );
+    ret.insert(
+        "sine".to_string(),
+        &self::sine::Factory as &dyn GeneratorFactory,
+    );
+    ret.insert(
+        "saw".to_string(),
+        &self::saw::Factory as &dyn GeneratorFactory,
+    );
+    ret.insert(
+        "triangle".to_string(),
+        &self::triangle::Factory as &dyn GeneratorFactory,
+    );
+    ret.insert(
+        "square".to_string(),
+        &self::square::Factory as &dyn GeneratorFactory,
+    );
+    ret.insert(
+        "noise".to_string(),
+        &self::noise::Factory as &dyn GeneratorFactory,
+    );
+    ret.insert(
+        "dahdsr".to_string(),
+        &self::adsr::Factory as &dyn GeneratorFactory,
+    );
 
     ret
 }
diff --git a/src/synth/noise.rs b/src/synth/noise.rs
index 850b75b..765d17e 100644
--- a/src/synth/noise.rs
+++ b/src/synth/noise.rs
@@ -1,7 +1,10 @@
+use super::{
+    FactoryParameters, GenBox, GenFactoryError, Generator, GeneratorFactory, Parameters, Rate,
+    SampleBuffer,
+};
 use std::mem;
-use super::*;
 
-use ::rand::{XorShiftRng, Rng, SeedableRng};
+use ::rand::{Rng, SeedableRng, XorShiftRng};
 
 #[derive(Debug)]
 pub struct Noise {
@@ -19,7 +22,9 @@ impl Generator for Noise {
 
         &self.buf
     }
-    fn buffer(&self) -> &SampleBuffer { &self.buf }
+    fn buffer(&self) -> &SampleBuffer {
+        &self.buf
+    }
     fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
         mem::replace(&mut self.buf, buf)
     }
diff --git a/src/synth/param.rs b/src/synth/param.rs
index 602be1d..dd3ecb8 100644
--- a/src/synth/param.rs
+++ b/src/synth/param.rs
@@ -1,4 +1,7 @@
-use super::*;
+use super::{
+    mem, FactoryParameters, GenBox, GenFactoryError, Generator, GeneratorFactory, ParamValue,
+    Parameters, Sample, SampleBuffer,
+};
 
 #[derive(Debug)]
 pub struct Param {
@@ -9,10 +12,13 @@ pub struct Param {
 
 impl Generator for Param {
     fn eval<'a>(&'a mut self, params: &Parameters) -> &'a SampleBuffer {
-        self.buf.set(*params.vars.get(&self.name).unwrap_or(&self.default));
+        self.buf
+            .set(*params.vars.get(&self.name).unwrap_or(&self.default));
+        &self.buf
+    }
+    fn buffer(&self) -> &SampleBuffer {
         &self.buf
     }
-    fn buffer(&self) -> &SampleBuffer { &self.buf }
     fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
         mem::replace(&mut self.buf, buf)
     }
@@ -24,7 +30,9 @@ impl GeneratorFactory for ParamFactory {
     fn new(&self, params: &mut FactoryParameters) -> Result<GenBox, GenFactoryError> {
         Ok(Box::new(Param {
             name: params.get_req_param("name", 0)?.as_string()?,
-            default: params.get_param("default", 1, &mut ParamValue::Float(0.0)).as_f32()?,
+            default: params
+                .get_param("default", 1, &mut ParamValue::Float(0.0))
+                .as_f32()?,
             buf: SampleBuffer::new(1),
         }))
     }
diff --git a/src/synth/rel.rs b/src/synth/rel.rs
index d2fbb70..93b0cd1 100644
--- a/src/synth/rel.rs
+++ b/src/synth/rel.rs
@@ -1,5 +1,8 @@
+use super::{
+    FactoryParameters, GenBox, GenFactoryError, Generator, GeneratorFactory, ParamKind, ParamValue,
+    Parameters, Rate, SampleBuffer,
+};
 use std::{cmp, mem};
-use super::*;
 
 #[derive(Debug)]
 pub enum RelOp {
@@ -97,28 +100,32 @@ impl Generator for Rel {
                         0.0
                     };
                 }
-            },
+            }
             Rate::Control => {
                 let val = left_buf.first();
                 let thres = right_buf.first();
-                self.buf.set(if match self.op {
-                    RelOp::Greater => val > thres,
-                    RelOp::GreaterEqual => val >= thres,
-                    RelOp::Equal => val == thres,
-                    RelOp::NotEqual => val != thres,
-                    RelOp::LessEqual => val <= thres,
-                    RelOp::Less => val < thres,
-                } {
-                    1.0
-                } else {
-                    0.0
-                });
-            },
+                self.buf.set(
+                    if match self.op {
+                        RelOp::Greater => val > thres,
+                        RelOp::GreaterEqual => val >= thres,
+                        RelOp::Equal => val == thres,
+                        RelOp::NotEqual => val != thres,
+                        RelOp::LessEqual => val <= thres,
+                        RelOp::Less => val < thres,
+                    } {
+                        1.0
+                    } else {
+                        0.0
+                    },
+                );
+            }
         }
 
         &self.buf
     }
-    fn buffer(&self) -> &SampleBuffer { &self.buf }
+    fn buffer(&self) -> &SampleBuffer {
+        &self.buf
+    }
     fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
         mem::replace(&mut self.buf, buf)
     }
diff --git a/src/synth/saw.rs b/src/synth/saw.rs
index 3e30ca6..5c36cc1 100644
--- a/src/synth/saw.rs
+++ b/src/synth/saw.rs
@@ -1,4 +1,7 @@
-use super::*;
+use super::{
+    mem, FactoryParameters, GenBox, GenFactoryError, Generator, GeneratorFactory, ParamValue,
+    Parameters, Rate, SampleBuffer,
+};
 
 #[derive(Debug)]
 pub struct Saw {
@@ -19,7 +22,9 @@ impl Generator for Saw {
         self.phase = (self.phase + pvel * (self.buf.len() as f32)) % 1.0;
         &self.buf
     }
-    fn buffer(&self) -> &SampleBuffer { &self.buf }
+    fn buffer(&self) -> &SampleBuffer {
+        &self.buf
+    }
     fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
         mem::replace(&mut self.buf, buf)
     }
@@ -31,7 +36,9 @@ impl GeneratorFactory for SawFactory {
     fn new(&self, params: &mut FactoryParameters) -> Result<GenBox, GenFactoryError> {
         Ok(Box::new(Saw {
             freq: params.remove_param("freq", 0)?.into_gen()?,
-            phase: params.get_param("phase", 1, &mut ParamValue::Float(0.0)).as_f32()?,
+            phase: params
+                .get_param("phase", 1, &mut ParamValue::Float(0.0))
+                .as_f32()?,
             buf: SampleBuffer::new(params.env.default_buffer_size),
         }))
     }
diff --git a/src/synth/sine.rs b/src/synth/sine.rs
index 4476d4a..3be79db 100644
--- a/src/synth/sine.rs
+++ b/src/synth/sine.rs
@@ -1,5 +1,8 @@
+use super::{
+    mem, FactoryParameters, GenBox, GenFactoryError, Generator, GeneratorFactory, ParamValue,
+    Parameters, Rate, SampleBuffer,
+};
 use std::f32::consts::PI;
-use super::*;
 
 const TAU: f32 = 2f32 * PI;
 
@@ -22,7 +25,9 @@ impl Generator for Sine {
         self.phase = (self.phase + pvel * (self.buf.len() as f32)) % TAU;
         &self.buf
     }
-    fn buffer(&self) -> &SampleBuffer { &self.buf }
+    fn buffer(&self) -> &SampleBuffer {
+        &self.buf
+    }
     fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
         mem::replace(&mut self.buf, buf)
     }
@@ -34,7 +39,9 @@ impl GeneratorFactory for SineFactory {
     fn new(&self, params: &mut FactoryParameters) -> Result<GenBox, GenFactoryError> {
         Ok(Box::new(Sine {
             freq: params.remove_param("freq", 0)?.into_gen()?,
-            phase: params.get_param("phase", 1, &mut ParamValue::Float(0.0)).as_f32()?,
+            phase: params
+                .get_param("phase", 1, &mut ParamValue::Float(0.0))
+                .as_f32()?,
             buf: SampleBuffer::new(params.env.default_buffer_size),
         }))
     }
diff --git a/src/synth/square.rs b/src/synth/square.rs
index 4b01e07..ef49020 100644
--- a/src/synth/square.rs
+++ b/src/synth/square.rs
@@ -1,4 +1,7 @@
-use super::*;
+use super::{
+    mem, FactoryParameters, GenBox, GenFactoryError, Generator, GeneratorFactory, ParamValue,
+    Parameters, Rate, SampleBuffer,
+};
 
 #[derive(Debug)]
 pub struct Square {
@@ -23,7 +26,9 @@ impl Generator for Square {
         self.phase = (self.phase + pvel * (self.buf.len() as f32)) % 1.0;
         &self.buf
     }
-    fn buffer(&self) -> &SampleBuffer { &self.buf }
+    fn buffer(&self) -> &SampleBuffer {
+        &self.buf
+    }
     fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
         mem::replace(&mut self.buf, buf)
     }
@@ -35,7 +40,9 @@ impl GeneratorFactory for SquareFactory {
     fn new(&self, params: &mut FactoryParameters) -> Result<GenBox, GenFactoryError> {
         Ok(Box::new(Square {
             freq: params.remove_param("freq", 0)?.into_gen()?,
-            phase: params.get_param("phase", 1, &mut ParamValue::Float(0.0)).as_f32()?,
+            phase: params
+                .get_param("phase", 1, &mut ParamValue::Float(0.0))
+                .as_f32()?,
             buf: SampleBuffer::new(params.env.default_buffer_size),
         }))
     }
diff --git a/src/synth/triangle.rs b/src/synth/triangle.rs
index 944c539..7d88ec1 100644
--- a/src/synth/triangle.rs
+++ b/src/synth/triangle.rs
@@ -1,5 +1,8 @@
+use super::{
+    FactoryParameters, GenBox, GenFactoryError, Generator, GeneratorFactory, ParamValue,
+    Parameters, Rate, SampleBuffer,
+};
 use std::mem;
-use super::*;
 
 #[derive(Debug)]
 pub struct Triangle {
@@ -27,7 +30,9 @@ impl Generator for Triangle {
         self.phase = (self.phase + pvel * (self.buf.len() as f32)) % 1.0;
         &self.buf
     }
-    fn buffer(&self) -> &SampleBuffer { &self.buf }
+    fn buffer(&self) -> &SampleBuffer {
+        &self.buf
+    }
     fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
         mem::replace(&mut self.buf, buf)
     }
@@ -39,7 +44,9 @@ impl GeneratorFactory for TriangleFactory {
     fn new(&self, params: &mut FactoryParameters) -> Result<GenBox, GenFactoryError> {
         Ok(Box::new(Triangle {
             freq: params.remove_param("freq", 0)?.into_gen()?,
-            phase: params.get_param("phase", 1, &mut ParamValue::Float(0.0)).as_f32()?,
+            phase: params
+                .get_param("phase", 1, &mut ParamValue::Float(0.0))
+                .as_f32()?,
             buf: SampleBuffer::new(params.env.default_buffer_size),
         }))
     }
diff --git a/src/synth/util.rs b/src/synth/util.rs
index 5bde721..16d6f7f 100644
--- a/src/synth/util.rs
+++ b/src/synth/util.rs
@@ -1,4 +1,7 @@
-use super::*;
+use super::{
+    mem, FactoryParameters, GenBox, GenFactoryError, Generator, GeneratorFactory, Parameters, Rate,
+    SampleBuffer,
+};
 
 #[derive(Debug)]
 pub struct ControlRate {
@@ -9,7 +12,10 @@ pub struct ControlRate {
 impl ControlRate {
     pub fn new(mut gen: GenBox) -> ControlRate {
         gen.set_buffer(SampleBuffer::new(1));
-        ControlRate { value: gen, buf: SampleBuffer::new(1) }
+        ControlRate {
+            value: gen,
+            buf: SampleBuffer::new(1),
+        }
     }
 }
 
@@ -19,15 +25,21 @@ impl Generator for ControlRate {
         self.buf.update_from(self.value.eval(params));
         &self.buf
     }
-    fn buffer(&self) -> &SampleBuffer { &self.buf }
-    fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer { mem::replace(&mut self.buf, buf) }
+    fn buffer(&self) -> &SampleBuffer {
+        &self.buf
+    }
+    fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
+        mem::replace(&mut self.buf, buf)
+    }
 }
 
 pub struct ControlRateFactory;
 
 impl GeneratorFactory for ControlRateFactory {
     fn new(&self, params: &mut FactoryParameters) -> Result<GenBox, GenFactoryError> {
-        Ok(Box::new(ControlRate::new(params.remove_param("gen", 0)?.into_gen()?)))
+        Ok(Box::new(ControlRate::new(
+            params.remove_param("gen", 0)?.into_gen()?,
+        )))
     }
 }
 
@@ -43,7 +55,9 @@ impl Generator for SampleRate {
         self.buf.set(params.env.sample_rate);
         &self.buf
     }
-    fn buffer(&self) -> &SampleBuffer { &self.buf }
+    fn buffer(&self) -> &SampleBuffer {
+        &self.buf
+    }
     fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
         mem::replace(&mut self.buf, buf)
     }
@@ -52,8 +66,10 @@ impl Generator for SampleRate {
 pub struct SampleRateFactory;
 
 impl GeneratorFactory for SampleRateFactory {
-    fn new(&self, params: &mut FactoryParameters) -> Result<GenBox, GenFactoryError> {
-        Ok(Box::new(SampleRate { buf: SampleBuffer::new(1) }))
+    fn new(&self, _params: &mut FactoryParameters) -> Result<GenBox, GenFactoryError> {
+        Ok(Box::new(SampleRate {
+            buf: SampleBuffer::new(1),
+        }))
     }
 }
 
diff --git a/src/types.rs b/src/types.rs
index b54eb42..ddef51e 100644
--- a/src/types.rs
+++ b/src/types.rs
@@ -10,18 +10,20 @@ impl Pitch {
     pub fn to_midi(&self) -> f32 {
         match *self {
             Pitch::MIDI(x) => x,
-            Pitch::Freq(x) => 
-                12.0 * (x / 440.0).log2() + 69.0,
+            Pitch::Freq(x) => 12.0 * (x / 440.0).log2() + 69.0,
         }
     }
-    pub fn to_midi_pitch(&self) -> Pitch { Pitch::MIDI(self.to_midi()) }
+    pub fn to_midi_pitch(&self) -> Pitch {
+        Pitch::MIDI(self.to_midi())
+    }
 
     pub fn to_freq(&self) -> f32 {
         match *self {
-            Pitch::MIDI(x) =>
-                440.0 * (2.0f32).powf((x - 69.0) / 12.0),
+            Pitch::MIDI(x) => 440.0 * (2.0f32).powf((x - 69.0) / 12.0),
             Pitch::Freq(x) => x,
         }
     }
-    pub fn to_freq_pitch(&self) -> Pitch { Pitch::Freq(self.to_freq()) }
+    pub fn to_freq_pitch(&self) -> Pitch {
+        Pitch::Freq(self.to_freq())
+    }
 }