sgf/src/bin/read_sgf.rs

@@ -11,9 +11,5 @@ fn main() {
     println!("{:?}", file);
 
     let games = parse_sgf_file(&file).unwrap();
-    for sgf in games {
-        if let Ok(sgf) = sgf {
-            println!("{:?}", sgf.white_player);
-        }
-    }
+    games.into_iter().flatten().for_each(|sgf| println!("{:?}", sgf.white_player));
 }

sgf/src/game.rs

@@ -118,7 +118,7 @@ impl GameRecord {
     /// Generate a list of moves which constitute the main line of the game. This is the game as it
     /// was actually played out, and by convention consists of the first node in each list of
     /// children.
-    pub fn mainline<'a>(&'a self) -> Vec<&'a GameNode> {
+    pub fn mainline(&self) -> Vec<&GameNode> {
         let mut moves: Vec<&GameNode> = vec![];
 
         let mut next = self.children.get(0);
@@ -150,7 +150,7 @@ impl Node for GameRecord {
         self.children.iter().collect::<Vec<&'a GameNode>>()
     }
 
-    fn add_child<'a>(&'a mut self, node: GameNode) -> &'a mut GameNode {
+    fn add_child(&mut self, node: GameNode) -> &mut GameNode {
         self.children.push(node);
         self.children.last_mut().unwrap()
     }
@@ -227,7 +227,7 @@ impl TryFrom<&parser::Tree> for GameRecord {
                 parser::Property::Round(v) => s.round = Some(v.clone()),
                 parser::Property::Ruleset(v) => s.rules = Some(v.clone()),
                 parser::Property::Source(v) => s.source = Some(v.clone()),
-                parser::Property::TimeLimit(v) => s.time_limit = Some(v.clone()),
+                parser::Property::TimeLimit(v) => s.time_limit = Some(*v),
                 parser::Property::Overtime(v) => s.overtime = Some(v.clone()),
                 // parser::Property::Data(v) => s.transcriber = Some(v.clone()),
                 _ => {}
@@ -238,7 +238,7 @@ impl TryFrom<&parser::Tree> for GameRecord {
             .root
             .next
             .iter()
-            .map(|node| GameNode::try_from(node))
+            .map(GameNode::try_from)
             .collect::<Result<Vec<GameNode>, GameNodeError>>()
             .map_err(GameError::InvalidGameNode)?;
 
@@ -257,18 +257,17 @@ pub trait Node {
     fn nodes<'a>(&'a self) -> Vec<&'a GameNode> {
         self.children()
             .iter()
-            .map(|node| {
+            .flat_map(|node| {
                 let mut children = node.nodes();
                 let mut v = vec![*node];
                 v.append(&mut children);
                 v
             })
-            .flatten()
             .collect::<Vec<&'a GameNode>>()
     }
 
-    fn children<'a>(&'a self) -> Vec<&'a GameNode>;
-    fn add_child<'a>(&'a mut self, node: GameNode) -> &'a mut GameNode;
+    fn children(&self) -> Vec<&GameNode>;
+    fn add_child(&mut self, node: GameNode) -> &mut GameNode;
 }
 
 impl GameNode {
@@ -281,21 +280,21 @@ impl GameNode {
 }
 
 impl Node for GameNode {
-    fn children<'a>(&'a self) -> Vec<&'a GameNode> {
+    fn children(&self) -> Vec<&GameNode> {
         match self {
             GameNode::MoveNode(node) => node.children(),
             GameNode::SetupNode(node) => node.children(),
         }
     }
 
-    fn nodes<'a>(&'a self) -> Vec<&'a GameNode> {
+    fn nodes(&self) -> Vec<&GameNode> {
         match self {
             GameNode::MoveNode(node) => node.nodes(),
             GameNode::SetupNode(node) => node.nodes(),
         }
     }
 
-    fn add_child<'a>(&'a mut self, new_node: GameNode) -> &'a mut GameNode {
+    fn add_child(&mut self, new_node: GameNode) -> &mut GameNode {
         match self {
             GameNode::MoveNode(node) => node.add_child(new_node),
             GameNode::SetupNode(node) => node.add_child(new_node),
@@ -326,7 +325,7 @@ impl TryFrom<&parser::Node> for GameNode {
         let children = n
             .next
             .iter()
-            .map(|n| GameNode::try_from(n))
+            .map(GameNode::try_from)
             .collect::<Result<Vec<Self>, Self::Error>>()?;
 
         let node = match (move_node, setup_node) {
@@ -389,7 +388,7 @@ impl Node for MoveNode {
         self.children.iter().collect::<Vec<&'a GameNode>>()
     }
 
-    fn add_child<'a>(&'a mut self, node: GameNode) -> &'a mut GameNode {
+    fn add_child(&mut self, node: GameNode) -> &mut GameNode {
         self.children.push(node);
         self.children.last_mut().unwrap()
     }
@@ -417,7 +416,7 @@ impl TryFrom<&parser::Node> for MoveNode {
                             if s.time_left.is_some() {
                                 return Err(Self::Error::ConflictingProperty);
                             }
-                            s.time_left = Some(duration.clone());
+                            s.time_left = Some(*duration);
                         }
                         parser::Property::Comment(cmt) => {
                             if s.comments.is_some() {
@@ -492,7 +491,7 @@ impl Node for SetupNode {
     }
 
     #[allow(dead_code)]
-    fn add_child<'a>(&'a mut self, _node: GameNode) -> &'a mut GameNode {
+    fn add_child(&mut self, _node: GameNode) -> &mut GameNode {
         unimplemented!()
     }
 }
@@ -509,7 +508,7 @@ impl TryFrom<&parser::Node> for SetupNode {
 }
 
 #[allow(dead_code)]
-pub fn path_to_node<'a>(node: &'a GameNode, id: Uuid) -> Vec<&'a GameNode> {
+pub fn path_to_node(node: &GameNode, id: Uuid) -> Vec<&GameNode> {
     if node.id() == id {
         return vec![node];
     }

sgf/src/lib.rs

@@ -70,7 +70,7 @@ impl From<nom::error::Error<&str>> for ParseError {
 /// The inner Result is for errors in each individual game in the file. All of the other games can
 /// still be kept as valid.
 pub fn parse_sgf(input: &str) -> Result<Vec<Result<GameRecord, game::GameError>>, Error> {
-    let (_, games) = parse_collection::<nom::error::VerboseError<&str>>(&input)?;
+    let (_, games) = parse_collection::<nom::error::VerboseError<&str>>(input)?;
     let games = games
         .into_iter()
         .map(|game| GameRecord::try_from(&game))

sgf/src/parser.rs

@@ -10,7 +10,7 @@ use nom::{
     IResult, Parser,
 };
 use serde::{Deserialize, Serialize};
-use std::{num::ParseIntError, time::Duration};
+use std::{fmt::Write, num::ParseIntError, time::Duration};
 
 impl From<ParseSizeError> for Error {
     fn from(_: ParseSizeError) -> Self {
@@ -303,9 +303,9 @@ impl Move {
                 if s.len() == 2 {
                     let mut parts = s.chars();
                     let row_char = parts.next().unwrap();
-                    let row = row_char as u8 - 'a' as u8;
+                    let row = row_char as u8 - b'a';
                     let column_char = parts.next().unwrap();
-                    let column = column_char as u8 - 'a' as u8;
+                    let column = column_char as u8 - b'a';
                     Some((row, column))
                 } else {
                     unimplemented!("moves must contain exactly two characters");
@@ -527,22 +527,20 @@ impl ToString for Property {
             Property::WhiteRank(value) => format!("WR[{}]", value),
             Property::WhiteTeam(value) => format!("WT[{}]", value),
             Property::Territory(Color::White, positions) => {
-                format!(
-                    "TW{}",
-                    positions
-                        .iter()
-                        .map(|Position(p)| format!("[{}]", p))
-                        .collect::<String>()
-                )
+                positions
+                    .iter()
+                    .fold("TW".to_owned(), |mut output, Position(p)| {
+                        let _ = write!(output, "{}", p);
+                        output
+                    })
             }
             Property::Territory(Color::Black, positions) => {
-                format!(
-                    "TB{}",
-                    positions
-                        .iter()
-                        .map(|Position(p)| format!("[{}]", p))
-                        .collect::<String>()
-                )
+                positions
+                    .iter()
+                    .fold("TB".to_owned(), |mut output, Position(p)| {
+                        let _ = write!(output, "{}", p);
+                        output
+                    })
             }
             Property::Unknown(UnknownProperty { ident, value }) => {
                 format!("{}[{}]", ident, value)
@@ -965,7 +963,7 @@ fn parse_win_score<'a, E: nom::error::ParseError<&'a str>>() -> impl Parser<&'a
 mod test {
     use super::*;
 
-    const EXAMPLE: &'static str = "(;FF[4]C[root](;C[a];C[b](;C[c])
+    const EXAMPLE: &str = "(;FF[4]C[root](;C[a];C[b](;C[c])
 (;C[d];C[e]))
 (;C[f](;C[g];C[h];C[i])
 (;C[j])))";