Merge pull request #84 from mist-go/syntax-philosphy-update

Syntax philosphy update

README.md

@@ -19,7 +19,7 @@ The `div` reduces the vertical height. The `picture` prevents autolinking.
 
 **Fast and works with Rust**
 
-- All of your favourite Rust libraries work with Mist
+- All of your favorite Rust libraries work with Mist
 - Compiles directly into efficient Rust code
 - Zero-cost abstractions, no runtime overhead
 

crates/analyzer/src/transpiler.rs

@@ -1,8 +1,8 @@
 use std::path::{Path, PathBuf};
 
 use mist_codegen::RustCodegen;
-use mist_parser::rev_mapper::Mapping;
 use mist_parser::parse;
+use mist_parser::rev_mapper::Mapping;
 
 pub struct TranspiledFile {
     pub mist_path: PathBuf,
@@ -26,20 +26,23 @@ pub fn transpile_mist(
 
     let parsed = parse(source).map_err(|e| format!("parse error: {e:?}"))?;
 
-    for item in &parsed {
+    for item in &parsed.items {
         mist_parser::semantics::check_class_semantics(item)
             .map_err(|e| format!("semantic error: {}", e[0].error_message))?;
     }
 
     let mut codegen = RustCodegen::new(mist_path.to_path_buf());
-    let output = codegen.generate(parsed);
 
-    codegen.mapping.shift_rust(extra_mod_decl.lines().count() as isize, 0);
+    codegen.generate(parsed.mod_attributes);
+
+    codegen.add(extra_mod_decl);
+
+    let output = codegen.generate(parsed.items);
 
     Ok(TranspiledFile {
         mist_path: mist_path.to_path_buf(),
         rust_path,
-        rust_content: format!("{}{}", extra_mod_decl, output),
+        rust_content: output,
         mapping: codegen.mapping,
     })
 }

crates/codegen/src/lib.rs

@@ -48,7 +48,7 @@ impl RustCodegen {
         "    ".repeat(self.indent)
     }
 
-    fn add(&mut self, s: &str) {
+    pub fn add(&mut self, s: &str) {
         let newline_count = bytecount::count(s.as_bytes(), b'\n');
 
         if newline_count == 0 {
@@ -63,17 +63,17 @@ impl RustCodegen {
         self.output.push_str(s);
     }
 
-    fn addln(&mut self, s: &str) {
+    pub fn addln(&mut self, s: &str) {
         self.add(s);
         self.add("\n");
     }
 
-    fn add_indented(&mut self, s: &str) {
+    pub fn add_indented(&mut self, s: &str) {
         let line = format!("{}{}", self.indent_str(), s);
         self.add(&line);
     }
 
-    fn add_indentedln(&mut self, s: &str) {
+    pub fn add_indentedln(&mut self, s: &str) {
         let line = format!("{}{}\n", self.indent_str(), s);
         self.add(&line);
     }

crates/mist-api/src/builder.mist

@@ -11,11 +11,11 @@ use mist_parser::rev_mapper;
 
 #[derive(Debug, Clone)]
 pub struct MistDiagnosticMessage {
-    pub message String,
+    pub String message,
-    pub file_path PathBuf,
+    pub PathBuf file_path,
-    pub file_name String ,
+    pub String file_name,
-    pub line usize,
+    pub usize line,
-    pub column usize,
+    pub usize column,
 }
 
 #[derive(Debug, Clone)]
@@ -25,7 +25,7 @@ pub enum MistDiagnostic {
     Rust(CompilerMessage),
 }
 
-pub fn bool build(mut args Vec<String>, root PathBuf) {
+pub bool build(Vec<String> mut args, PathBuf root) {
     args.remove(0);
     args.insert(1, "--message-format=json".to_string());
 
@@ -57,7 +57,7 @@ pub fn bool build(mut args Vec<String>, root PathBuf) {
                             break;
                         }
 
-                        let map = mapping.entry(mapping_path.clone()).or_insert_with(fn() {
+                        let map = mapping.entry(mapping_path.clone()).or_insert_with(() => {
                             let map_str = fs::read_to_string(mapping_path).expect("Failed to read map file");
 
                             serde_json::from_str<rev_mapper::Mapping>(&map_str).expect("Failed to parse map file")
@@ -107,7 +107,7 @@ pub fn bool build(mut args Vec<String>, root PathBuf) {
                 let mut stdout = std::io::stdout();
 
                 std::io::copy(&mut raw_reader, &mut stdout)
-                    .map_err(fn(v) -> v.to_string())
+                    .map_err((v) => v.to_string())
                     .expect("(Mist) Failed to copy IO");
 
                 command.wait().unwrap();
@@ -123,7 +123,7 @@ pub fn bool build(mut args Vec<String>, root PathBuf) {
     false
 }
 
-pub fn void print_diagnostics(diagnostics *Vec<MistDiagnostic>) {
+pub void print_diagnostics(Vec<MistDiagnostic>& diagnostics) {
     let mut files = HashMap::new();
 
     for diag in diagnostics {
@@ -159,13 +159,13 @@ pub fn void print_diagnostics(diagnostics *Vec<MistDiagnostic>) {
     }
 }
 
-pub fn Option<String> get_line(
+pub Option<String> get_line(
-    files *mut HashMap<PathBuf, Vec<String>>,
+    HashMap<PathBuf, Vec<String>> mut& files,
-    msg *MistDiagnosticMessage,
+    MistDiagnosticMessage& msg,
 ) {
     let src_path = msg.file_path.clone();
 
-    let lines = files.entry(src_path.clone()).or_insert_with(fn() {
+    let lines = files.entry(src_path.clone()).or_insert_with(() => {
         fs::read_to_string(src_path)
             .expect("Unable to read mist file")
             .lines()
@@ -174,5 +174,5 @@ pub fn Option<String> get_line(
             .collect()
     });
 
-    lines.get(msg.line - 1).map(fn(v) -> v.trim().to_string())
+    lines.get(msg.line - 1).map((v) => v.trim().to_string())
 }

crates/mist-api/src/modules.mist

@@ -9,14 +9,14 @@ use crate::transpiler::MistConfig;
 
 #[derive(Debug)]
 pub class Module {
-    pub name String;
+    pub String name;
-    pub path PathBuf;
+    pub PathBuf path;
-    pub children Vec<Module>;
+    pub Vec<Module> children;
 
-    pub constructor(mist_path PathBuf, config *MistConfig) {
+    pub constructor(PathBuf mist_path, MistConfig& config) {
         self.children = Vec::new();
         self.name = mist_path.file_stem()
-            .and_then(fn(s) -> s.to_str())
+            .and_then((s) => s.to_str())
             .expect("Failed to get module name")
             .to_string();
         self.path = mist_path;
@@ -37,7 +37,7 @@ pub class Module {
         }
     }
 
-    fn void scan_directory(*mut self, search_dir *Path, config *MistConfig) {
+    void scan_directory(&mut self, Path& search_dir, MistConfig& config) {
         let entries = match fs::read_dir(search_dir) {
             Ok(entries) => entries;
             Err(e) => {
@@ -65,11 +65,11 @@ pub class Module {
         }
     }
 
-    pub fn bool is_package(*self) {
+    pub bool is_package(&self) {
-        self.path.file_name().map(fn(v) -> v.to_str()).unwrap_or_default() == Some("package.mist")
+        self.path.file_name().map((v) => v.to_str()).unwrap_or_default() == Some("package.mist")
     }
 
-    pub fn PathBuf output_dir(*self, parent_dir *PathBuf) {
+    pub PathBuf output_dir(&self, PathBuf& parent_dir) {
         if self.path.is_dir() || self.is_package() {
             parent_dir.join(&self.name)
         } else {
@@ -77,7 +77,13 @@ pub class Module {
         }
     }
 
-    pub fn PathBuf output_path(*self, parent_dir *PathBuf, curr_mod_decl *Option<(mist_parser::ast::Visibility, mist_parser::ast::Identifier)>) {
+    pub PathBuf output_path(&self,
+            PathBuf& parent_dir,
+            Option<(
+                mist_parser::ast::Visibility, 
+                mist_parser::ast::Identifier
+            )>& curr_mod_decl
+        ) {
         let name = if let Some((_, name)) = curr_mod_decl {
             &name.0
         } else {

crates/mist-api/src/transpiler.mist

@@ -16,13 +16,13 @@ use serde::Deserialize;
 #[derive(Debug, Deserialize)]
 #[serde(default)]
 pub struct MistConfig {
-    pub package PathBuf,
+    pub PathBuf package,
-    pub packages Vec<PathBuf>,
+    pub Vec<PathBuf> packages,
-    pub main_mods String
+    pub String main_mods
 }
 
 impl MistConfig {
-    pub fn bool should_ignore(*self, path *Path) {
+    pub bool should_ignore(&self, Path& path) {
         if path == self.package {
             return true;
         }
@@ -37,7 +37,7 @@ impl MistConfig {
     }
 }
 impl Default for MistConfig {
-    fn Self default() {
+ Self default() {
         Self {
             package: PathBuf::from("main.mist"),
             packages: Vec::new(),
@@ -46,7 +46,7 @@ impl Default for MistConfig {
     }
 }
 
-pub fn PathBuf transpile() {
+pub PathBuf transpile() {
     let start = time::Instant::now();
 
     let root = env::current_dir().expect("Unable to find project root");
@@ -56,10 +56,10 @@ pub fn PathBuf transpile() {
     let out = root.join(".mist/src");
 
     let toml_content = fs::read_to_string(&toml_path)
-        .unwrap_or_else(fn(_) -> panic!("Could not read file at {:?}", toml_path));
+        .unwrap_or_else((_) => panic!("Could not read file at {:?}", toml_path));
 
-    let mut config MistConfig = toml::from_str(&toml_content)
+    MistConfig mut config = toml::from_str(&toml_content)
-        .unwrap_or_else(fn(_) -> panic!("Failed to parse Mist.toml from {:?}", toml_path));
+        .unwrap_or_else((_) => panic!("Failed to parse Mist.toml from {:?}", toml_path));
     
     for pkg in &mut config.packages {
         *pkg = src.join(&*pkg);
@@ -85,10 +85,10 @@ pub fn PathBuf transpile() {
 }
 
 impl modules::Module {
-    fn (bool, String) transpile(*self, parent_dir *PathBuf, config *mut MistConfig) {
+    (bool, String) transpile(&self, PathBuf& parent_dir, MistConfig mut& config) {
-        if !self.path.is_dir() && self.path.extension().and_then(fn(v) -> v.to_str()) != Some("mist") {
+        if !self.path.is_dir() && self.path.extension().and_then((v) => v.to_str()) != Some("mist") {
             let file_name = self.path.file_name()
-                .and_then(fn(s) -> s.to_str())
+                .and_then((s) => s.to_str())
                 .expect("Failed to get file name");
 
             fs::copy(&self.path, parent_dir.join(&file_name)).expect("Failed to copy SideFile");
@@ -124,7 +124,7 @@ impl modules::Module {
         self.write_transpile(output, parent_dir, child_changed)
     }
 
-    fn (bool, String) write_transpile(*self, output String, parent_dir *PathBuf, child_changed bool) {
+    (bool, String) write_transpile(&self, String output, PathBuf& parent_dir, bool child_changed) {
         if self.path.is_dir() {
             let output_file = self.output_path(parent_dir, &None);
 
@@ -174,7 +174,7 @@ impl modules::Module {
     }
 }
 
-fn std::io::Result<bool> is_source_newer(source *Path, output *Path) {
+std::io::Result<bool> is_source_newer(Path& source, Path& output) {
     if !output.exists() {
         return Ok(true);
     }
@@ -190,12 +190,18 @@ pub enum TranspileError<'a> {
     Semantic(Vec<mist_parser::semantics::SemanticError>)
 }
 
-pub fn Result<(PathBuf, mist_codegen::RustCodegen, String), TranspileError<'a>>
+pub Result<(PathBuf, mist_codegen::RustCodegen, String), TranspileError<'a>>
-    transpile_code<'a>(path *PathBuf, source *'a str, mut output_file PathBuf, mod_decl *str, curr_mod_decl *Option<(mist_parser::ast::Visibility, mist_parser::ast::Identifier)>) {
+    transpile_code<'a>(
+            PathBuf& path,
+            str 'a& source,
+            PathBuf mut output_file,
+            str& mod_decl,
+            Option<(mist_parser::ast::Visibility, mist_parser::ast::Identifier)>& curr_mod_decl
+    ) {
 
     if let Some((_, name)) = &curr_mod_decl {
-        if output_file.file_name().map(fn(v) -> v.to_str()).unwrap_or_default() != Some("mod.rs") {
+        if output_file.file_name().map((v) => v.to_str()).unwrap_or_default() != Some("mod.rs") {
-            if let Some(ext) = output_file.extension().map(fn(e) -> e.to_owned()) {
+            if let Some(ext) = output_file.extension().map((e) => e.to_owned()) {
                 let mut new_name = std::ffi::OsString::from(&name.0);
 
                 new_name.push(".");
@@ -212,18 +218,27 @@ pub fn Result<(PathBuf, mist_codegen::RustCodegen, String), TranspileError<'a>>
 
     let parsed = mist_parser::parse(source).map_err(TranspileError::Parse)?;
 
-    for i in &parsed {
+    for i in &parsed.items {
         let _ = mist_parser::semantics::check_class_semantics(i).map_err(TranspileError::Semantic)?;
     }
 
-    let output = gc.generate(parsed);
+    gc.generate(parsed.mod_attributes);
 
-    gc.mapping.shift_rust(mod_decl.lines().count() as isize, 0);
+    gc.add(mod_decl);
+
+    let output = gc.generate(parsed.items);
 
     Ok((output_file, gc, output))
 }
 
-pub fn void transpile_file(path *PathBuf, source *str, output_file PathBuf, mod_decl *str, curr_mod_decl *Option<(mist_parser::ast::Visibility, mist_parser::ast::Identifier)>) {
+pub void transpile_file(
+        PathBuf& path,
+        str& source,
+        PathBuf output_file,
+        str& mod_decl,
+        Option<(mist_parser::ast::Visibility, mist_parser::ast::Identifier)>& curr_mod_decl
+    ) {
+
     let (output_file, gc, output) = match transpile_code(path, source, output_file, mod_decl, curr_mod_decl) {
         Ok(output) => output;
         Err(e) => {
@@ -232,7 +247,7 @@ pub fn void transpile_file(path *PathBuf, source *str, output_file PathBuf, mod_
         }
     };
 
-    let res = fs::write(&output_file, format!("{mod_decl}{output}"));
+    let res = fs::write(&output_file, output);
 
     let output_file_map = output_file.with_extension("map.json");
 
@@ -259,7 +274,7 @@ pub fn void transpile_file(path *PathBuf, source *str, output_file PathBuf, mod_
     }
 }
 
-pub fn void decode_err<'a>(err *TranspileError<'a>, path *PathBuf) {
+pub void decode_err<'a>(TranspileError<'a>& err, PathBuf& path) {
     let curr_dir = std::env::current_dir().unwrap();
 
     match err {

crates/parser/src/grammar.pest

@@ -30,7 +30,6 @@ keyword = {
   | "false"
   | "dyn"
   | "loop"
-  | "fn"
   | "unsafe"
   | "override"
 }
@@ -108,7 +107,7 @@ path_type = {
 ref_lifetime = { lifetime | unsafe_kw }
 
 ref_type = {
-    "*" ~ ref_lifetime? ~ mutable? ~ type_expr
+    mutable? ~ ref_lifetime? ~ "&"
 }
 
 dyn_type = {
@@ -116,7 +115,7 @@ dyn_type = {
 }
 
 type_expr = {
-    (path_type | tuple_type | ref_type | dyn_type)
+    (path_type | tuple_type | dyn_type) ~ ref_type*
 }
 
 lifetime = {
@@ -200,15 +199,17 @@ attributes = {
 // DECLARATION HELPERS
 // ======================================================
 var_decl = {
-    "let" ~ pattern ~ type_expr?
+    ("let" ~ pattern)
+  | type_expr ~ (!tuple_pattern ~ pattern)
 }
 
 field = {
-    visibility? ~ identifier ~ type_expr
+    visibility? ~ type_expr ~ identifier
 }
 
 param = {
-    pattern ~ type_expr?
+    (type_expr ~ pattern)
+  | pattern
 }
 
 field_list = {
@@ -286,7 +287,7 @@ class_field = {
 }
 
 self_param = {
-    (deref_px ~ lifetime?)? ~ mutable? ~ "self"
+    (ref_px ~ lifetime?)? ~ mutable? ~ "self"
 }
 
 method_args = _{
@@ -333,7 +334,7 @@ trait_decl = {
 override_kw = { "override" ~ ("(" ~ expr_path ~ ")")? }
 
 function_decl = {
-    visibility? ~ "fn" ~ ("void" | type_expr) ~ identifier ~ generics_decl? ~ "(" ~ method_args ~ ")" ~ override_kw? ~ (block | semicolon)
+    visibility? ~ ("void" | type_expr) ~ identifier ~ generics_decl? ~ "(" ~ method_args ~ ")" ~ override_kw? ~ (block | semicolon)
 }
 
 // ======================================================
@@ -341,8 +342,8 @@ function_decl = {
 // ======================================================
 
 top_level = {
-    (attributes ~ (import | impl_for_decl | impl_decl | trait_decl | struct_decl | enum_decl | class_decl | declare_module | function_decl))
+    mod_attribute
-  | mod_attribute
+  | (attributes ~ (import | impl_for_decl | impl_decl | trait_decl | struct_decl | enum_decl | class_decl | declare_module | function_decl))
 }
 
 // ======================================================
@@ -449,7 +450,7 @@ loop_stmt = {
 pattern_list = { pattern ~ ("|" ~ pattern)* }
 
 match_item = {
-    pattern_list ~ "=>" ~ statement
+    pattern_list ~ "=>" ~ (statement | (expr ~ ","))
 }
 
 match_stmt = {
@@ -465,8 +466,8 @@ match_stmt = {
 // ------------------------------------------------------
 
 closure = {
-    "fn" ~ "(" ~ param_list ~ ")" ~ type_expr? ~ block
+    ("(" ~ param_list ~ ")" ~ "=>" ~ expr)
-  | "fn" ~ "(" ~ param_list ~ ")" ~ type_expr? ~ "->" ~ expr
+    | (type_expr ~ "(" ~ param_list ~ ")" ~ "=>" ~ expr)
 }
 
 // ------------------------------------------------------

crates/parser/src/lib.rs

@@ -15,7 +15,12 @@ use crate::error::{IntoErr, ParseError};
 #[grammar = "./src/grammar.pest"]
 pub struct MistParser;
 
-pub fn parse<'a>(source: &'a str) -> Result<Vec<TopLevel>, ParseError<'a, Vec<TopLevel>>> {
+pub struct Program {
+    pub mod_attributes: Vec<TopLevel>,
+    pub items: Vec<TopLevel>,
+}
+
+pub fn parse<'a>(source: &'a str) -> Result<Program, ParseError<'a, Vec<TopLevel>>> {
     let mut pairs = MistParser::parse(Rule::program, source)?;
 
     let mut statements = vec![];
@@ -29,7 +34,16 @@ pub fn parse<'a>(source: &'a str) -> Result<Vec<TopLevel>, ParseError<'a, Vec<To
     }
 
     match analyzer.build(statements) {
-        Ok(v) => Ok(v),
+        Ok(v) => {
+            let (mod_attributes, items): (Vec<_>, Vec<_>) = v
+                .into_iter()
+                .partition(|item| matches!(item.0.item, TopLevelKind::ModAttribute));
+
+            Ok(Program {
+                items,
+                mod_attributes,
+            })
+        }
         Err(e) => {
             let rec = e.recovered.clone();
 

crates/parser/src/parser/common/decl.rs

@@ -3,6 +3,7 @@ use crate::{
     ast::*,
     ast_expr,
     error::{AstError, IntoErr, collect_recovered},
+    parser::consume_rule,
 };
 
 impl<'a> TryFrom<pest::iterators::Pair<'a, Rule>> for VarDeclStmt {
@@ -52,8 +53,10 @@ impl<'a> TryFrom<pest::iterators::Pair<'a, Rule>> for VarDecl {
                 let mut inner = pair.into_inner();
 
                 ast_expr!(VarDecl {
+                    type_: consume_rule(&mut inner, Rule::type_expr)
+                        .map(TypeExpr::try_from)
+                        .transpose(),
                     name: Pattern::try_from(inner.next().unwrap()),
-                    type_: inner.next().map(TypeExpr::try_from).transpose(),
                 })
             }
 
@@ -72,8 +75,8 @@ impl<'a> TryFrom<pest::iterators::Pair<'a, Rule>> for FieldDecl {
 
                 ast_expr!(FieldDecl {
                     visibility: Visibility::try_from(&mut inner),
-                    name: Identifier::try_from(inner.next().unwrap()),
                     type_: TypeExpr::try_from(inner.next().unwrap()),
+                    name: Identifier::try_from(inner.next().unwrap()),
                 })
             }
 

crates/parser/src/parser/common/expr.rs

@@ -77,10 +77,10 @@ impl<'a> TryFrom<pest::iterators::Pair<'a, Rule>> for Expression {
 
             Rule::closure => {
                 ast_expr!(Expression::Closure {
-                    params: collect_recovered(inner.next().unwrap().into_inner()),
                     return_type: consume_rule(&mut inner, Rule::type_expr)
                         .map(TypeExpr::try_from)
                         .transpose(),
+                    params: collect_recovered(inner.next().unwrap().into_inner()),
                     body: Expression::try_from(inner.next().unwrap()).map(Box::new),
                 })
             }

crates/parser/src/parser/common/types.rs

@@ -2,7 +2,7 @@ use crate::{
     Rule,
     ast::*,
     ast_ensure, ast_expr,
-    error::{AstError, AstResult, IntoErr, collect_recovered},
+    error::{AstError, IntoErr, collect_recovered},
     parser::{consume_rule, listen_rule},
 };
 
@@ -15,7 +15,27 @@ impl<'a> TryFrom<pest::iterators::Pair<'a, Rule>> for TypeExpr {
 
         match rule {
             Rule::generic => Self::try_from(inner.next().unwrap()),
-            Rule::type_expr => inner.next().unwrap().try_into(),
+            Rule::type_expr => {
+                let mut inner = inner;
+
+                let mut ty = TypeExpr::try_from(inner.next().unwrap())?;
+
+                for ref_pair in inner {
+                    let mut ref_inner = ref_pair.into_inner();
+
+                    ty = TypeExpr::Ref {
+                        lifetime: consume_rule(&mut ref_inner, Rule::ref_lifetime)
+                            .map(|v| v.into_inner().next().map(Lifetime::try_from))
+                            .unwrap_or_default()
+                            .transpose()
+                            .get()?,
+                        mutable: listen_rule(&mut ref_inner, Rule::mutable),
+                        ty: Box::new(ty),
+                    };
+                }
+
+                Ok(ty)
+            }
             Rule::lifetime => ast_expr!(TypeExpr::Lifetime(inner.next().unwrap().try_into())),
 
             Rule::tuple_type => ast_expr!(TypeExpr::Tuple(collect_recovered(inner))),
@@ -26,16 +46,6 @@ impl<'a> TryFrom<pest::iterators::Pair<'a, Rule>> for TypeExpr {
                 ))
             }
 
-            Rule::ref_type => {
-                ast_expr!(TypeExpr::Ref {
-                    lifetime: consume_rule(&mut inner, Rule::ref_lifetime)
-                        .map(|v| v.into_inner().next().map(Lifetime::try_from))
-                        .unwrap_or_default()
-                        .transpose(),
-                    mutable: Ok(listen_rule(&mut inner, Rule::mutable)) as AstResult<bool>,
-                    ty: TypeExpr::try_from(inner.next().unwrap()).map(Box::new),
-                })
-            }
             Rule::dyn_type => {
                 ast_expr!(TypeExpr::Dyn(
                     TypeExpr::try_from(inner.next().unwrap()).map(Box::new),

crates/parser/src/parser/items/function.rs

@@ -27,7 +27,7 @@ impl<'a> TryFrom<pest::iterators::Pair<'a, Rule>> for FunctionDecl {
 
             let self_param = consume_rule(&mut inner, Rule::self_param).map(|param| {
                 let mut param_inner = param.into_inner();
-                let is_ref = listen_rule(&mut param_inner, Rule::deref_px);
+                let is_ref = listen_rule(&mut param_inner, Rule::ref_px);
                 let lifetime = consume_rule(&mut param_inner, Rule::lifetime);
                 let mutable = listen_rule(&mut param_inner, Rule::mutable);
                 let name = Pattern::Path(mutable && !is_ref, Path(vec![Identifier(String::from("self"))]));

crates/parser/src/parser/items/mod.rs

@@ -16,12 +16,15 @@ impl<'a> TryFrom<pest::iterators::Pair<'a, Rule>> for TopLevel {
     type Error = AstError<'a, Self>;
 
     fn try_from(pair: pest::iterators::Pair<'a, Rule>) -> Result<Self, Self::Error> {
-        let mut inner = pair.into_inner();
+        let mut inner = pair.clone().into_inner();
 
         let attributes = collect_recovered(inner.next().unwrap().into_inner());
 
         ast_expr!(TopLevel(
-            inner.next().map(Spanned::try_from).unwrap(),
+            inner
+                .next()
+                .map(Spanned::try_from)
+                .unwrap_or_else(move || Ok(Spanned::new_pair(pair, TopLevelKind::ModAttribute))),
             attributes,
         ))
     }

crates/parser/src/parser/mod.rs

@@ -28,6 +28,18 @@ pub fn consume_rule<'a>(
     if consumed { pairs.next() } else { None }
 }
 
+impl<T> Spanned<T> {
+    fn new_pair(pair: pest::iterators::Pair<'_, Rule>, item: T) -> Self {
+        let span = pair.as_span().start_pos().line_col();
+
+        Self {
+            line: span.0,
+            column: span.1,
+            item,
+        }
+    }
+}
+
 impl<'a, T: TryFrom<pest::iterators::Pair<'a, Rule>, Error = AstError<'a, T>>>
     TryFrom<pest::iterators::Pair<'a, Rule>> for Spanned<T>
 {

mist-test/src/common/decl_test.mist

@@ -1,44 +1,44 @@
 pub module decl_test;
 
-pub fn void test_let_basic() {
+pub void test_let_basic() {
     let x = 42;
     assert_eq!(x, 42);
 }
 
-pub fn void test_let_typed() {
+pub void test_let_typed() {
-    let x i32 = 42;
+    i32 x = 42;
     assert_eq!(x, 42);
 
-    let s *str = "hello";
+    str& s = "hello";
     assert_eq!(s, "hello");
 
-    let b bool = true;
+    bool b = true;
     assert_eq!(b, true);
 
-    let f f64 = 3.14;
+    f64 f = 3.14;
     assert_eq!(f, 3.14);
 }
 
-pub fn void test_let_mut() {
+pub void test_let_mut() {
     let mut _x = 42;
     _x = 100;
     assert_eq!(_x, 100);
 }
 
-pub fn void test_let_tuple_destructure() {
+pub void test_let_tuple_destructure() {
     let (a, b) = (10, "hello");
     assert_eq!(a, 10);
     assert_eq!(b, "hello");
 }
 
-pub fn void test_let_nested_tuple() {
+pub void test_let_nested_tuple() {
     let (a, (b, c)) = (1, (2, 3));
     assert_eq!(a, 1);
     assert_eq!(b, 2);
     assert_eq!(c, 3);
 }
 
-pub fn void test_let_pattern_irrefutable() {
+pub void test_let_pattern_irrefutable() {
     let x = 5;
     let (y, z) = (1, 2);
     assert_eq!(x, 5);
@@ -46,30 +46,30 @@ pub fn void test_let_pattern_irrefutable() {
     assert_eq!(z, 2);
 }
 
-pub fn void test_multiple_decls() {
+pub void test_multiple_decls() {
     let a = 1;
     let b = 2;
     let c = 3;
     assert_eq!(a + b + c, 6);
 }
 
-pub fn void test_let_with_type_and_init() {
+pub void test_let_with_type_and_init() {
-    let x f64 = 10.0;
+    f64 x = 10.0;
     assert_eq!(x, 10.0);
 }
 
-pub fn void test_string_literal() {
+pub void test_string_literal() {
     let s = "hello, world!";
     assert_eq!(s.len(), 13);
 }
 
-pub fn void test_let_bool() {
+pub void test_let_bool() {
     let t = true;
     let f = false;
     assert_eq!(t, !f);
 }
 
-pub fn void run_tests() {
+pub void run_tests() {
     test_let_basic();
     test_let_typed();
     test_let_mut();

mist-test/src/common/expr_test.mist

@@ -1,6 +1,6 @@
 pub module expr_test;
 
-pub fn void test_literals() {
+pub void test_literals() {
     assert_eq!(42, 42);
     assert_eq!(3.14, 3.14);
     assert_eq!(true, true);
@@ -8,28 +8,28 @@ pub fn void test_literals() {
     assert_eq!("hello", "hello");
 }
 
-pub fn void test_tuples() {
+pub void test_tuples() {
     let t = (1, true, "three");
     assert_eq!(t.0, 1);
     assert_eq!(t.1, true);
     assert_eq!(t.2, "three");
 }
 
-pub fn void test_arrays() {
+pub void test_arrays() {
     let arr = [1, 2, 3];
     assert_eq!(arr[0], 1);
     assert_eq!(arr[1], 2);
     assert_eq!(arr[2], 3);
 }
 
-pub fn void test_array_repeat() {
+pub void test_array_repeat() {
     let arr = [0; 5];
     assert_eq!(arr[0], 0);
     assert_eq!(arr[4], 0);
     assert_eq!(arr.len(), 5);
 }
 
-pub fn void test_binary_arith() {
+pub void test_binary_arith() {
     assert_eq!(10 + 5, 15);
     assert_eq!(10 - 5, 5);
     assert_eq!(10 * 5, 50);
@@ -37,7 +37,7 @@ pub fn void test_binary_arith() {
     assert_eq!(10 % 3, 1);
 }
 
-pub fn void test_binary_cmp() {
+pub void test_binary_cmp() {
     assert_eq!(5 < 10, true);
     assert_eq!(10 <= 10, true);
     assert_eq!(10 > 5, true);
@@ -46,14 +46,14 @@ pub fn void test_binary_cmp() {
     assert_eq!(5 != 10, true);
 }
 
-pub fn void test_binary_logic() {
+pub void test_binary_logic() {
     assert_eq!(true && true, true);
     assert_eq!(true && false, false);
     assert_eq!(true || false, true);
     assert_eq!(false || false, false);
 }
 
-pub fn void test_binary_bit() {
+pub void test_binary_bit() {
     assert_eq!(5 & 3, 1);
     assert_eq!(5 | 3, 7);
     assert_eq!(5 ^ 3, 6);
@@ -61,20 +61,20 @@ pub fn void test_binary_bit() {
     assert_eq!(4 >> 1, 2);
 }
 
-pub fn void test_prefix() {
+pub void test_prefix() {
     let x = 42;
     assert_eq!(-x, -42);
     assert_eq!(!true, false);
     assert_eq!(!false, true);
 }
 
-pub fn void test_ref_deref() {
+pub void test_ref_deref() {
     let x = 42;
     let r = &x;
     assert_eq!(*r, 42);
 }
 
-pub fn void test_postfix_inc_dec() {
+pub void test_postfix_inc_dec() {
     let mut x = 5;
     x++;
     assert_eq!(x, 6);
@@ -82,17 +82,17 @@ pub fn void test_postfix_inc_dec() {
     assert_eq!(x, 5);
 }
 
-pub fn void test_as_cast() {
+pub void test_as_cast() {
     let x = 42;
     assert_eq!(x as f64, 42.0);
 }
 
-pub fn void test_closure() {
+pub void test_closure() {
-    let add = fn(a, b) -> a + b;
+    let add = (a, b) => a + b;
     assert_eq!(add(2, 3), 5);
 }
 
-pub fn void test_block_expr() {
+pub void test_block_expr() {
     let x = {
         let y = 10;
         y + 5
@@ -100,7 +100,7 @@ pub fn void test_block_expr() {
     assert_eq!(x, 15);
 }
 
-pub fn void test_if_expr() {
+pub void test_if_expr() {
     let x = if true { 1 } else { 2 };
     assert_eq!(x, 1);
 
@@ -108,7 +108,7 @@ pub fn void test_if_expr() {
     assert_eq!(y, 2);
 }
 
-pub fn void test_range_expr() {
+pub void test_range_expr() {
     let r = 0..5;
     let mut count = 0;
     for i in r {
@@ -117,7 +117,7 @@ pub fn void test_range_expr() {
     assert_eq!(count, 5);
 }
 
-pub fn void test_binary_assign() {
+pub void test_binary_assign() {
     let mut x = 10;
     x += 5;
     assert_eq!(x, 15);
@@ -131,7 +131,7 @@ pub fn void test_binary_assign() {
     assert_eq!(x, 2);
 }
 
-pub fn void run_tests() {
+pub void run_tests() {
     test_literals();
     test_tuples();
     test_arrays();

mist-test/src/common/package.mist

@@ -1,3 +1,3 @@
 pub module common;
 
-pub fn void test_package() {}
+pub void test_package() {}

mist-test/src/common/statement_test.mist

@@ -1,23 +1,23 @@
 pub module statement_test;
 
-pub fn void test_var_decl() {
+pub void test_var_decl() {
     let x = 42;
     assert_eq!(x, 42);
 
-    let y i32 = 10;
+    i32 y = 10;
     assert_eq!(y, 10);
 
-    let name *str = "mist";
+    str& name = "mist";
     assert_eq!(name, "mist");
 }
 
-pub fn void test_var_decl_with_init() {
+pub void test_var_decl_with_init() {
     let mut x = 0;
     x = 5;
     assert_eq!(x, 5);
 }
 
-pub fn void test_if_statement() {
+pub void test_if_statement() {
     let mut x = 0;
 
     if true {
@@ -33,7 +33,7 @@ pub fn void test_if_statement() {
     assert_eq!(x, 3);
 }
 
-pub fn void test_if_else_if() {
+pub void test_if_else_if() {
     let mut x = 0;
 
     if x == 1 {
@@ -46,7 +46,7 @@ pub fn void test_if_else_if() {
     assert_eq!(x, 20);
 }
 
-pub fn void test_while_loop() {
+pub void test_while_loop() {
     let mut count = 0;
 
     while count < 5 {
@@ -55,7 +55,7 @@ pub fn void test_while_loop() {
     assert_eq!(count, 5);
 }
 
-pub fn void test_for_loop() {
+pub void test_for_loop() {
     let mut sum = 0;
 
     for i in 0..4 {
@@ -64,7 +64,7 @@ pub fn void test_for_loop() {
     assert_eq!(sum, 6);
 }
 
-pub fn void test_loop_stmt() {
+pub void test_loop_stmt() {
     let mut count = 0;
 
     loop {
@@ -76,7 +76,7 @@ pub fn void test_loop_stmt() {
     assert_eq!(count, 3);
 }
 
-pub fn void test_break_continue() {
+pub void test_break_continue() {
     let mut sum = 0;
 
     for i in 0..10 {
@@ -91,11 +91,11 @@ pub fn void test_break_continue() {
     assert_eq!(sum, 1 + 3 + 5);
 }
 
-pub fn i32 test_return() {
+pub i32 test_return() {
     return 42;
 }
 
-pub fn void test_block_scope() {
+pub void test_block_scope() {
     let x = {
         let inner = 10;
         inner + 5
@@ -103,22 +103,22 @@ pub fn void test_block_scope() {
     assert_eq!(x, 15);
 }
 
-pub fn void test_match_literal() {
+pub void test_match_literal() {
     let x = 2;
     let result;
 
     match x {
         1 => { result = 10; }
-        2 => { result = 20; }
+        2 => result = 20;
-        3 => { result = 30; }
+        3 => result = 30,
         _ => panic!();
     }
     assert_eq!(result, 20);
 }
 
-pub fn void test_match_or_pattern() {
+pub void test_match_or_pattern() {
     let x = 1;
-    let result i32;
+    i32 result;
 
     match x {
         1 | 2 => { result = 100; }
@@ -128,7 +128,7 @@ pub fn void test_match_or_pattern() {
     assert_eq!(result, 100);
 }
 
-pub fn void test_match_default() {
+pub void test_match_default() {
     let x = 99;
     let result;
 
@@ -139,7 +139,7 @@ pub fn void test_match_default() {
     assert_eq!(result, 99);
 }
 
-pub fn void test_for_with_pattern_destructure() {
+pub void test_for_with_pattern_destructure() {
     let pairs = [(1, "a"), (2, "b")];
     let mut keys = 0;
 
@@ -149,7 +149,7 @@ pub fn void test_for_with_pattern_destructure() {
     assert_eq!(keys, 3);
 }
 
-pub fn void run_tests() {
+pub void run_tests() {
     test_var_decl();
     test_var_decl_with_init();
     test_if_statement();

mist-test/src/common/types_test.mist

@@ -1,58 +1,58 @@
 pub module types_test;
 
-pub fn void test_integer_type() {
+pub void test_integer_type() {
-    let x i32 = 42;
+    i32 x = 42;
     assert_eq!(x, 42);
 }
 
-pub fn void test_float_type() {
+pub void test_float_type() {
-    let x f64 = 3.14;
+    f64 x = 3.14;
     assert_eq!(x, 3.14);
 }
 
-pub fn void test_bool_type() {
+pub void test_bool_type() {
-    let x bool = true;
+    bool x = true;
     assert_eq!(x, true);
 
-    let y bool = false;
+    bool y = false;
     assert_eq!(y, false);
 }
 
-pub fn void test_string_type() {
+pub void test_string_type() {
-    let s *str = "hello";
+    str& s = "hello";
     assert_eq!(s, "hello");
 }
 
-pub fn void test_tuple_type() {
+pub void test_tuple_type() {
-    let t (i32, *str) = (42, "answer");
+    (i32, str&) t = (42, "answer");
     assert_eq!(t.0, 42);
     assert_eq!(t.1, "answer");
 }
 
-pub fn void test_ref_type() {
+pub void test_ref_type() {
-    let x i32 = 42;
+    i32 x = 42;
-    let r *i32 = &x;
+    i32& r = &x;
     assert_eq!(*r, 42);
 }
 
-pub fn void test_mut_ref_type() {
+pub void test_mut_ref_type() {
     let mut x = 42;
-    let r *mut i32 = &mut x;
+    i32 mut& r = &mut x;
     *r = 100;
     assert_eq!(x, 100);
 }
 
-pub fn void test_void_type() {}
+pub void test_void_type() {}
 
-fn i32 add(a i32, b i32) {
+i32 add(i32 a, i32 b) {
     a + b
 }
 
-pub fn void test_fn_return_type() {
+pub void test_fn_return_type() {
     assert_eq!(add(3, 4), 7);
 }
 
-pub fn void run_tests() {
+pub void run_tests() {
     test_integer_type();
     test_float_type();
     test_bool_type();

mist-test/src/items/attribute_test.mist

@@ -2,22 +2,22 @@ pub module attribute_test;
 
 #[derive(Debug)]
 pub struct Debuggable {
-    value i32,
+    i32 value,
 }
 
-pub fn void test_derive_attribute() {
+pub void test_derive_attribute() {
     let d = Debuggable { value: 42 };
     assert_eq!(d.value, 42);
 }
 
 #[allow(unused_variables)]
-pub fn void test_allow_attribute() {
+pub void test_allow_attribute() {
     let x = 42;
     let y = "unused";
     assert_eq!(x, 42);
 }
 
-pub fn void run_tests() {
+pub void run_tests() {
     test_derive_attribute();
     test_allow_attribute();
 }

mist-test/src/items/class_test.mist

@@ -1,21 +1,21 @@
 pub module class_test;
 
 pub class Animal {
-    pub name String;
+    pub String name;
 
     constructor() {
         self.name = "Rex".to_string();
     }
 
-    pub fn String speak(*self) {
+    pub String speak(&self) {
         "Unknown".to_string()
     }
 
-    pub fn void test_speak(*self) {
+    pub void test_speak(&self) {
         assert_eq!(self.speak(), "Woof!");
     }
 
-    pub fn void static_method() {}
+    pub void static_method() {}
 }
 
 pub class Mammal : Animal {
@@ -23,7 +23,7 @@ pub class Mammal : Animal {
         super = Super::new();
     }
 
-    pub fn void args_test(*self, x i32, y *str) {
+    pub void args_test(&self, i32 x, str& y) {
         assert_eq!(x, 10);
         assert_eq!(y, "hello");
     }
@@ -34,18 +34,18 @@ pub class Dog : Mammal {
         super = Super::new();
     }
 
-    pub fn String speak(*self) override(Animal) {
+    pub String speak(&self) override(Animal) {
         "Woof!".to_string()
     }
 
     impl std::fmt::Display {
-        fn Result<(), std::fmt::Error> fmt(*self, f *mut std::fmt::Formatter<'_>) {
+     Result<(), std::fmt::Error> fmt(&self, std::fmt::Formatter<'_> mut& f) {
             write!(f, "🐾 {}", self.name)
         }
     }
 }
 
-pub fn void run_tests() {
+pub void run_tests() {
     let dawg = Dog::new();
 
     dawg.args_test(10, "hello");

mist-test/src/items/enum_test.mist

@@ -5,7 +5,7 @@ enum OptionInt {
     Some(i32),
 }
 
-pub fn void test_enum_named() {
+pub void test_enum_named() {
     let x = OptionInt::None;
     match x {
         OptionInt::None => { assert_eq!(1, 1); }
@@ -13,7 +13,7 @@ pub fn void test_enum_named() {
     }
 }
 
-pub fn void test_enum_tuple() {
+pub void test_enum_tuple() {
     let x = OptionInt::Some(42);
     match x {
         OptionInt::None => { assert_eq!(0, 1); }
@@ -22,11 +22,11 @@ pub fn void test_enum_tuple() {
 }
 
 enum Shape {
-    Circle { radius i32 },
+    Circle { i32 radius },
-    Rect { w i32, h i32 },
+    Rect { i32 w, i32 h },
 }
 
-pub fn void test_enum_struct() {
+pub void test_enum_struct() {
     let c = Shape::Circle { radius: 5 };
     match c {
         Shape::Circle { radius } => { assert_eq!(radius, 5); }
@@ -46,7 +46,7 @@ enum Color {
     Blue,
 }
 
-pub fn void test_enum_eq() {
+pub void test_enum_eq() {
     let c = Color::Red;
     match c {
         Color::Red => { assert_eq!(1, 1); }
@@ -54,7 +54,7 @@ pub fn void test_enum_eq() {
     }
 }
 
-pub fn void run_tests() {
+pub void run_tests() {
     test_enum_named();
     test_enum_tuple();
     test_enum_struct();

mist-test/src/items/function_test.mist

@@ -1,60 +1,60 @@
 pub module function_test;
 
-fn void greet() {
+void greet() {
     let mut x = 1;
     x++;
 }
 
-pub fn void test_basic_function() {
+pub void test_basic_function() {
     greet();
 }
 
-fn i32 add(a i32, b i32) {
+i32 add(i32 a, i32 b) {
     a + b
 }
 
-pub fn void test_fn_params() {
+pub void test_fn_params() {
     assert_eq!(add(2, 3), 5);
 }
 
-pub fn i32 test_fn_return() {
+pub i32 test_fn_return() {
     42
 }
 
-pub fn i32 test_fn_early_return() {
+pub i32 test_fn_early_return() {
     return 100;
     0
 }
 
-pub fn i32 test_fn_mut_param(mut x i32) {
+pub i32 test_fn_mut_param(i32 mut x) {
     x = x + 10;
     x
 }
 
-pub fn void test_method_call() {
+pub void test_method_call() {
     let s = "hello";
     assert_eq!(s.len(), 5);
     assert_eq!(s.to_uppercase(), "HELLO");
 }
 
-fn i32 triple(x i32) {
+i32 triple(i32 x) {
     add(x, add(x, x))
 }
 
-pub fn void test_nested_fn_calls() {
+pub void test_nested_fn_calls() {
     assert_eq!(triple(5), 15);
 }
 
-fn i32 factorial(n i32) {
+i32 factorial(i32 n) {
     if n <= 1 { 1 }
     else { n * factorial(n - 1) }
 }
 
-pub fn void test_recursive_fn() {
+pub void test_recursive_fn() {
     assert_eq!(factorial(5), 120);
 }
 
-pub fn void run_tests() {
+pub void run_tests() {
     test_basic_function();
     test_fn_params();
     assert_eq!(test_fn_return(), 42);

mist-test/src/items/impl_test.mist

@@ -1,39 +1,39 @@
 pub module impl_test;
 
 struct Vector2 {
-    x i32,
+    i32 x,
-    y i32,
+    i32 y,
 }
 
 impl Vector2 {
-    pub fn i32 magnitude(*self) {
+    pub i32 magnitude(&self) {
         self.x * self.x + self.y * self.y
     }
 }
 
-pub fn void test_inherent_impl() {
+pub void test_inherent_impl() {
     let v = Vector2 { x: 3, y: 4 };
     assert_eq!(v.magnitude(), 25);
 }
 
 trait Display {
-    fn String display(*self);
+    String display(&self);
 }
 
 impl Display for Vector2 {
-    fn String display(*self) {
+    String display(&self) {
         format!("({}, {})", self.x, self.y)
     }
 }
 
-pub fn void test_trait_impl_block() {
+pub void test_trait_impl_block() {
     let v = Vector2 { x: 1, y: 2 };
     let s = v.display();
     assert_eq!(s.len() > 0, true);
 }
 
 impl Vector2 {
-    pub fn Vector2 add(*self, other Vector2) {
+    pub Vector2 add(&self, Vector2 other) {
         Vector2 {
             x: self.x + other.x,
             y: self.y + other.y,
@@ -41,7 +41,7 @@ impl Vector2 {
     }
 }
 
-pub fn void test_multiple_impls() {
+pub void test_multiple_impls() {
     let a = Vector2 { x: 1, y: 2 };
     let b = Vector2 { x: 3, y: 4 };
     let c = a.add(b);
@@ -49,7 +49,7 @@ pub fn void test_multiple_impls() {
     assert_eq!(c.y, 6);
 }
 
-pub fn void run_tests() {
+pub void run_tests() {
     test_inherent_impl();
     test_trait_impl_block();
     test_multiple_impls();

mist-test/src/items/struct_test.mist

@@ -1,23 +1,23 @@
 pub module struct_test;
 
 struct Point {
-    x i32,
+    i32 x,
-    y i32,
+    i32 y,
 }
 
-pub fn void test_struct_create_access() {
+pub void test_struct_create_access() {
     let p = Point { x: 10, y: 20 };
     assert_eq!(p.x, 10);
     assert_eq!(p.y, 20);
 }
 
-pub fn void test_struct_mut_field() {
+pub void test_struct_mut_field() {
     let mut p = Point { x: 1, y: 2 };
     p.x = 100;
     assert_eq!(p.x, 100);
 }
 
-pub fn void test_struct_destructure() {
+pub void test_struct_destructure() {
     let p = Point { x: 3, y: 4 };
     let Point { x, y } = p;
     assert_eq!(x, 3);
@@ -25,11 +25,11 @@ pub fn void test_struct_destructure() {
 }
 
 struct Line {
-    start Point,
+    Point start,
-    end Point,
+    Point end,
 }
 
-pub fn void test_struct_nested() {
+pub void test_struct_nested() {
     let l = Line {
         start: Point { x: 0, y: 0 },
         end: Point { x: 5, y: 10 },
@@ -38,7 +38,7 @@ pub fn void test_struct_nested() {
     assert_eq!(l.end.y, 10);
 }
 
-pub fn void run_tests() {
+pub void run_tests() {
     test_struct_create_access();
     test_struct_mut_field();
     test_struct_destructure();

mist-test/src/items/trait_test.mist

@@ -1,41 +1,41 @@
 pub module trait_test;
 
 trait Speak {
-    fn String speak(*self);
+    String speak(&self);
 }
 
 trait Greet : Speak {
-    fn String greet(*self);
+    String greet(&self);
 }
 
 struct Dog {
-    name String,
+    String name,
 }
 
 impl Speak for Dog {
-    fn String speak(*self) {
+    String speak(&self) {
         "woof".to_string()
     }
 }
 
 impl Greet for Dog {
-    fn String greet(*self) {
+    String greet(&self) {
         "hello".to_string()
     }
 }
 
-pub fn void test_trait_impl() {
+pub void test_trait_impl() {
     let d = Dog { name: "Rex".to_string() };
     assert_eq!(d.speak(), "woof");
 }
 
-pub fn void test_trait_with_requirement() {
+pub void test_trait_with_requirement() {
     let d = Dog { name: "Buddy".to_string() };
     assert_eq!(d.speak(), "woof");
     assert_eq!(d.greet(), "hello");
 }
 
-pub fn void run_tests() {
+pub void run_tests() {
     test_trait_impl();
     test_trait_with_requirement();
 }

mist-test/src/main.mist

@@ -1,4 +1,4 @@
-fn void main() {
+void main() {
     println!("running common tests...");
     common::test_package();
     common::expr_test::run_tests();

src/analyzer.mist

@@ -1,3 +1,3 @@
-fn void main() {
+void main() {
     mist_analyzer::start();
 }

src/main.mist

@@ -4,8 +4,8 @@ use std::fs;
 use mist_api::builder;
 use mist_api::transpiler;
 
-fn void main() {
+void main() {
-    let args Vec<String> = env::args().collect();
+    Vec<String> args = env::args().collect();
 
     if args.len() < 2 {
         print_usage();
@@ -44,7 +44,7 @@ fn void main() {
     }
 }
 
-fn void print_usage() {
+void print_usage() {
     println!("Mist - the mist compiler\n");
     println!("󰖟 View our documentation! \x1b[35mhttps://mist.selimaj.dev\x1b[0m");
     println!(" Follow us on github!    \x1b[35mhttps://github.com/mist-go\x1b[0m\n");
@@ -66,7 +66,7 @@ fn void print_usage() {
     println!(" \x1b[36m mist help\x1b[0m              print this message\n");
 }
 
-fn void init_project(mut args Vec<String>) {
+void init_project(Vec<String> mut args) {
     args.remove(0);
 
     process::Command::new("cargo")
@@ -77,7 +77,7 @@ fn void init_project(mut args Vec<String>) {
         .spawn()
         .expect("Failed to run cargo").wait().expect("Unable to wait");
 
-    let is_lib bool = fs::metadata("src/lib.rs").is_ok();
+    bool is_lib = fs::metadata("src/lib.rs").is_ok();
 
     if is_lib {
         fs::remove_file("src/lib.rs").expect("Failed to remove src/lib.rs");
@@ -92,10 +92,10 @@ fn void init_project(mut args Vec<String>) {
     println!("\n\x1b[34minfo\x1b[0m: Please open Cargo.toml and adjust `\x1b[35mname\x1b[0m = ` as needed, Thank you for using Mist!\n");
 }
 
-fn void inject_mist_target(is_lib bool) {
+void inject_mist_target(bool is_lib) {
-    let toml_content String = fs::read_to_string("Cargo.toml").expect("Failed to read Cargo.toml");
+    String toml_content = fs::read_to_string("Cargo.toml").expect("Failed to read Cargo.toml");
 
-    let inject *str = if is_lib {
+    str& inject = if is_lib {
         "\n[lib]\nname = \"my_lib\"\npath = \".mist/src/lib.rs\"\n"
     } else {
         "\n[[bin]]\nname = \"my_bin\"\npath = \".mist/src/main.rs\"\n"