🎨 Make cargo clippy happy

src/compile/mod.rs

@@ -19,7 +19,7 @@ impl std::fmt::Display for Operand {
         match self {
             Operand::Variable(name) => write!(f, "{}", name),
             Operand::String(string) => {
-                let escaped = string.replace('\\', r#"\\"#).replace('"', r#"\""#);
+                let escaped = string.replace('\\', r"\\").replace('"', r#"\""#);
                 write!(f, "\"{}\"", escaped)
             }
             Operand::Integer(int) => write!(f, "{}", int),
@@ -50,7 +50,7 @@ pub enum MindustryOperation {
 }
 
 impl MindustryOperation {
-    fn operands<'a>(&'a self) -> Box<[&'a Operand]> {
+    fn operands(&self) -> Box<[&Operand]> {
         match self {
             Self::JumpIf(_label, _operator, lhs, rhs) => Box::new([lhs, rhs]),
             Self::Operator(_target, _operator, lhs, rhs) => Box::new([lhs, rhs]),
@@ -65,7 +65,7 @@ impl MindustryOperation {
         }
     }
 
-    fn operands_mut<'a>(&'a mut self) -> Vec<&'a mut Operand> {
+    fn operands_mut(&mut self) -> Vec<&mut Operand> {
         match self {
             Self::JumpIf(_label, _operator, lhs, rhs) => vec![lhs, rhs],
             Self::Operator(_target, _operator, lhs, rhs) => vec![lhs, rhs],
@@ -91,7 +91,7 @@ impl MindustryOperation {
     }
 }
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Default)]
 pub struct MindustryProgram(pub Vec<MindustryOperation>);
 
 impl MindustryProgram {
@@ -225,7 +225,7 @@ pub fn translate_ast(
                     condition_name.clone(),
                 ));
 
-                if false_branch.instructions.len() > 0 {
+                if !false_branch.instructions.is_empty() {
                     let else_label = namer.label("else");
                     let end_label = namer.label("endif");
                     res.push(MindustryOperation::JumpIf(
@@ -301,18 +301,12 @@ pub fn translate_ast(
                     res.push(MindustryOperation::GenericMut(
                         target_name.clone(),
                         out_name,
-                        argument_names
-                            .into_iter()
-                            .map(|name| Operand::Variable(name))
-                            .collect(),
+                        argument_names.into_iter().map(Operand::Variable).collect(),
                     ));
                 } else {
                     res.push(MindustryOperation::Generic(
                         target_name.clone(),
-                        argument_names
-                            .into_iter()
-                            .map(|name| Operand::Variable(name))
-                            .collect(),
+                        argument_names.into_iter().map(Operand::Variable).collect(),
                     ));
                 }
             }
@@ -403,7 +397,7 @@ impl std::fmt::Display for MindustryProgram {
                     for operand in operands {
                         write!(f, " {}", operand)?;
                     }
-                    write!(f, "\n")?;
+                    writeln!(f)?;
                 }
                 MindustryOperation::GenericMut(name, out_name, operands) => {
                     write!(f, "{}", name)?;
@@ -411,7 +405,7 @@ impl std::fmt::Display for MindustryProgram {
                     for operand in operands {
                         write!(f, " {}", operand)?;
                     }
-                    write!(f, "\n")?;
+                    writeln!(f)?;
                 }
             }
         }

src/compile/optimize/constant.rs

@@ -10,11 +10,7 @@ pub fn optimize_constant(program: MindustryProgram) -> MindustryProgram {
             return true;
         }
 
-        if name.starts_with('@') {
-            false
-        } else {
-            true
-        }
+        !name.starts_with('@')
     };
 
     let res = replace_if(program, |instructions, instruction, use_index| {
@@ -67,12 +63,12 @@ pub fn optimize_constant(program: MindustryProgram) -> MindustryProgram {
             .filter(|(_name, value, set_index)| {
                 // Don't optimize operands that refer to a mutating variable (either mutable @-variables or instructions that get updated in-between)
                 if let Operand::Variable(assigned_var) = value {
-                    if !is_safe_variable(&assigned_var) {
+                    if !is_safe_variable(assigned_var) {
                         return false;
                     }
 
                     for instr_between in &instructions[*set_index..use_index] {
-                        if instr_between.mutates(&assigned_var) {
+                        if instr_between.mutates(assigned_var) {
                             return false;
                         }
                     }
@@ -85,8 +81,8 @@ pub fn optimize_constant(program: MindustryProgram) -> MindustryProgram {
             .map(|(name, value, _index)| (name, value))
             .collect::<Vec<_>>();
 
-        if optimizable_operands.len() == 0 {
-            return None
+        if optimizable_operands.is_empty() {
+            return None;
         }
 
         let mut instruction = instruction.clone();

src/compile/optimize/dead.rs

@@ -6,11 +6,10 @@ pub(crate) fn optimize_dead_code(program: MindustryProgram) -> MindustryProgram
 
     let mut needed_vars = HashSet::new();
     let mut needed_labels = HashSet::new();
-    let mut push_var = |operand: &Operand| match operand {
-        Operand::Variable(name) => {
+    let mut push_var = |operand: &Operand| {
+        if let Operand::Variable(name) = operand {
             needed_vars.insert(name.clone());
         }
-        _ => {}
     };
 
     for instruction in program.0.iter() {
@@ -44,31 +43,32 @@ pub(crate) fn optimize_dead_code(program: MindustryProgram) -> MindustryProgram
     }
 
     // Remove unneeded `set`s and `op`s
-    replace_if(program, |_instructions, instruction, _index| {
-        match instruction {
+    replace_if(
+        program,
+        |_instructions, instruction, _index| match instruction {
             MindustryOperation::Set(name, _) | MindustryOperation::Operator(name, _, _, _) => {
                 if !tmp_regex.is_match(name) {
-                    return None
+                    return None;
                 }
 
                 if needed_vars.contains(name) {
-                    return None
+                    return None;
                 }
 
-                return Some(vec![])
+                Some(vec![])
             }
             MindustryOperation::JumpLabel(label) => {
                 if !label_regex.is_match(label) {
-                    return None
+                    return None;
                 }
 
                 if needed_labels.contains(label) {
-                    return None
+                    return None;
                 }
 
-                return Some(vec![])
+                Some(vec![])
             }
-            _ => None
-        }
-    })
+            _ => None,
+        },
+    )
 }

src/compile/optimize/replace.rs

@@ -1,9 +1,12 @@
 use super::*;
 
-
 pub(crate) fn replace_if<F>(program: MindustryProgram, callback: F) -> MindustryProgram
 where
-    F: for<'c> Fn(&'c Vec<MindustryOperation>, &'c MindustryOperation, usize) -> Option<Vec<MindustryOperation>>
+    F: for<'c> Fn(
+        &'c Vec<MindustryOperation>,
+        &'c MindustryOperation,
+        usize,
+    ) -> Option<Vec<MindustryOperation>>,
 {
     let mut res = MindustryProgram::new();
 

src/cursor.rs

@@ -103,6 +103,10 @@ impl<'a, T> Cursor<'a, T> {
         self.data.len().saturating_sub(self.offset)
     }
 
+    pub fn is_empty(&self) -> bool {
+        self.len() == 0
+    }
+
     pub fn range<R: std::slice::SliceIndex<[T], Output = [T]>>(&self, range: R) -> Self {
         Self {
             data: &self.data[self.offset..][range],

src/parse/ast.rs

@@ -46,7 +46,7 @@ pub fn build_ast(tokens: &[BasicToken], config: &Config) -> Result<BasicAstBlock
     let mut context_stack: Vec<(Vec<BasicAstInstruction>, Context)> =
         vec![(Vec::new(), Context::Main)];
 
-    while tokens.len() > 0 {
+    while !tokens.is_empty() {
         let Some((ref mut instructions, _context)) = context_stack.last_mut() else {
             unreachable!("Context stack got emptied!");
         };
@@ -225,7 +225,7 @@ pub fn build_ast(tokens: &[BasicToken], config: &Config) -> Result<BasicAstBlock
         }
     }
 
-    if context_stack.len() == 0 {
+    if context_stack.is_empty() {
         unreachable!("Empty context stack");
     } else if context_stack.len() > 1 {
         match &context_stack.last().unwrap().1 {
@@ -277,7 +277,7 @@ pub(crate) fn parse_expression(
     tokens: &mut Cursor<'_, BasicToken>,
 ) -> Result<BasicAstExpression, ParseError> {
     /// Returns the first non-newline token in `tokens`
-    fn peek<'a>(tokens: &'a [BasicToken]) -> Option<&'a BasicToken> {
+    fn peek(tokens: &[BasicToken]) -> Option<&BasicToken> {
         tokens.iter().find(|t| !matches!(t, BasicToken::NewLine))
     }
 

src/parse/tokenize.rs

@@ -86,10 +86,10 @@ pub fn tokenize(raw: &str) -> Result<Vec<BasicToken>, ParseError> {
     // TODO: handle labels
 
     for mut line in raw.lines() {
-        if line.len() > 0 {
+        if !line.is_empty() {
             res.push(BasicToken::NewLine);
         }
-        while line.len() > 0 {
+        while !line.is_empty() {
             // Main match clause for tokens
             match_token!(line, res;
                 match_space => (),

tests/examples.rs

@@ -3,30 +3,35 @@
 use std::path::{Path, PathBuf};
 
 use basic_to_mindustry::common::Config;
-use basic_to_mindustry::compile::{optimize_constant, translate_ast, optimize_jump_op, optimize_jump_always};
+use basic_to_mindustry::compile::{
+    optimize_constant, optimize_jump_always, optimize_jump_op, translate_ast,
+};
 use basic_to_mindustry::parse::{build_ast, tokenize};
 
-fn read_basic_examples() -> impl Iterator<Item=(String, String)> {
-    Path::new("./examples/").read_dir().unwrap().filter_map(|entry| {
-        let Ok(entry) = entry else {
-            return None;
-        };
-
-        if entry
-            .file_name()
-            .into_string()
-            .map(|name| name.ends_with(".basic"))
-            .unwrap_or(false)
-        {
-            let file_name = entry.file_name().into_string().unwrap();
-            let file = std::fs::read_to_string(entry.path()).unwrap_or_else(|e| {
-                panic!("Error opening {:?}: {:?}", file_name, e);
-            });
-            Some((file_name, file))
-        } else {
-            None
-        }
-    })
+fn read_basic_examples() -> impl Iterator<Item = (String, String)> {
+    Path::new("./examples/")
+        .read_dir()
+        .unwrap()
+        .filter_map(|entry| {
+            let Ok(entry) = entry else {
+                return None;
+            };
+
+            if entry
+                .file_name()
+                .into_string()
+                .map(|name| name.ends_with(".basic"))
+                .unwrap_or(false)
+            {
+                let file_name = entry.file_name().into_string().unwrap();
+                let file = std::fs::read_to_string(entry.path()).unwrap_or_else(|e| {
+                    panic!("Error opening {:?}: {:?}", file_name, e);
+                });
+                Some((file_name, file))
+            } else {
+                None
+            }
+        })
 }
 
 #[test]
@@ -53,17 +58,27 @@ fn test_examples_opt() {
     let config = Config::default();
 
     for (file_name, file) in read_basic_examples() {
-        let Some(program_name) = PathBuf::from(file_name.clone()).file_stem().and_then(|stem| stem.to_str()).map(|s| s.to_string()) else {
-            panic!("Basic program in examples/ has an invalid filename: {}", file_name);
+        let Some(program_name) = PathBuf::from(file_name.clone())
+            .file_stem()
+            .and_then(|stem| stem.to_str())
+            .map(|s| s.to_string())
+        else {
+            panic!(
+                "Basic program in examples/ has an invalid filename: {}",
+                file_name
+            );
         };
 
         let opt_0 = format!("tests/examples/{}.0.mlog", program_name);
         if !std::fs::try_exists(&opt_0).unwrap() {
-            continue
+            continue;
         }
 
         let opt_0 = std::fs::read_to_string(opt_0).unwrap_or_else(|e| {
-            panic!("Couldn't open tests/examples/{}.0.mlog: {:?}", program_name, e);
+            panic!(
+                "Couldn't open tests/examples/{}.0.mlog: {:?}",
+                program_name, e
+            );
         });
 
         let tokenized = tokenize(&file).unwrap_or_else(|e| {
@@ -74,14 +89,17 @@ fn test_examples_opt() {
         });
         let translated = translate_ast(&parsed, &mut Default::default(), &config);
 
-
         pretty_assertions::assert_eq!(opt_0.trim(), format!("{}", translated).trim());
 
         let optimized = optimize_jump_always(optimize_jump_op(optimize_constant(translated)));
 
-        let opt_1 = std::fs::read_to_string(format!("tests/examples/{}.1.mlog", program_name)).unwrap_or_else(|e| {
-            panic!("Couldn't open tests/examples/{}.1.mlog: {:?}", program_name, e);
-        });
+        let opt_1 = std::fs::read_to_string(format!("tests/examples/{}.1.mlog", program_name))
+            .unwrap_or_else(|e| {
+                panic!(
+                    "Couldn't open tests/examples/{}.1.mlog: {:?}",
+                    program_name, e
+                );
+            });
 
         pretty_assertions::assert_eq!(opt_1.trim(), format!("{}", optimized).trim());
     }