Merge pull request #120 from mist-go/patches

Patches

Cargo.lock

@@ -476,7 +476,7 @@ dependencies = [
 
 [[package]]
 name = "mist-analyzer"
-version = "0.4.0-alpha.0"
+version = "0.4.0"
 dependencies = [
  "cargo_metadata",
  "dashmap 6.1.0",
@@ -495,7 +495,7 @@ dependencies = [
 
 [[package]]
 name = "mist-api"
-version = "0.4.0-alpha.0"
+version = "0.4.0"
 dependencies = [
  "cargo_metadata",
  "mist-codegen",
@@ -507,7 +507,7 @@ dependencies = [
 
 [[package]]
 name = "mist-codegen"
-version = "0.4.0-alpha.0"
+version = "0.4.0"
 dependencies = [
  "bytecount",
  "mist-parser",
@@ -515,7 +515,7 @@ dependencies = [
 
 [[package]]
 name = "mist-lang"
-version = "0.4.0-alpha.0"
+version = "0.4.0"
 dependencies = [
  "mist-analyzer",
  "mist-api",
@@ -524,7 +524,7 @@ dependencies = [
 
 [[package]]
 name = "mist-parser"
-version = "0.4.0-alpha.0"
+version = "0.4.0"
 dependencies = [
  "pest",
  "pest_derive",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "mist-lang"
-version = "0.4.0-alpha.0"
+version = "0.4.0"
 edition = "2024"
 description = "The Mist programming language compiler"
 license = "Apache-2.0"
@@ -33,10 +33,10 @@ exclude = [
 ]
 
 [workspace.dependencies]
-mist-parser = { path = "crates/parser", version = "0.4.0-alpha.0" }
-mist-analyzer = { path = "crates/analyzer", version = "0.4.0-alpha.0" }
-mist-codegen = { path = "crates/codegen", version = "0.4.0-alpha.0" }
-mist-api = { path = "crates/mist-api", version = "0.4.0-alpha.0" }
+mist-parser = { path = "crates/parser", version = "0.4.0" }
+mist-analyzer = { path = "crates/analyzer", version = "0.4.0" }
+mist-codegen = { path = "crates/codegen", version = "0.4.0" }
+mist-api = { path = "crates/mist-api", version = "0.4.0" }
 
 [[bin]]
 name = "mist"

crates/analyzer/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "mist-analyzer"
-version = "0.4.0-alpha.0"
+version = "0.4.0"
 edition = "2024"
 description = "The Mist programming language Analyzer LSP"
 license = "Apache-2.0"

crates/analyzer/src/lib.rs

@@ -21,7 +21,8 @@ use tower_lsp::{Client, LanguageServer, LspService, Server};
 
 use crate::rust_analyzer::RustAnalyzer;
 use crate::transpiler::{
-    TranspileError, TranspiledFile, format_mist, transpile_mist, transpile_mist_no_sem,
+    TranspileError, TranspiledFile, format_mist, resolve_rust_path, transpile_mist,
+    transpile_mist_no_sem,
 };
 
 static MARKER_COUNTER: AtomicU64 = AtomicU64::new(0);
@@ -93,7 +94,7 @@ fn clean_lsp_url(path: &std::path::Path) -> Option<Url> {
 }
 
 fn lsp_pos_to_rust_map(pos: &Position) -> RustMap {
-    RustMap(pos.line as usize + 1, pos.character as usize)
+    RustMap(pos.line as usize, pos.character as usize)
 }
 
 fn mist_map_to_lsp_pos(map: &MistMap) -> Position {
@@ -188,6 +189,10 @@ fn find_marker_position(content: &str, marker: &str) -> Option<Position> {
     Some(Position { line, character })
 }
 
+fn is_mist_file(path: &Path) -> bool {
+    path.extension().and_then(|e| e.to_str()) == Some("mist")
+}
+
 fn mist_to_rust_path(mist_path: &Path) -> PathBuf {
     let mut path = mist_path.to_path_buf();
     path.set_extension("rs");
@@ -391,11 +396,14 @@ impl Backend {
                 // Fallback: the source has a syntax error that prevents transpilation.
                 // Use the last known working Rust content + mapping to inject the
                 // marker at the nearest valid Rust position.
-                let mist_target = MistMap(line as usize + 1, character as usize);
-                let mut rust_path = crate::from_mist_to_rust(mist_path.to_path_buf());
-                if mist_path.file_name().and_then(|n| n.to_str()) == Some("package.mist") {
-                    rust_path.set_file_name("mod.rs");
-                }
+                let mist_target = MistMap(line as usize, character as usize);
+                let source_for_path = self
+                    .documents
+                    .lock()
+                    .await
+                    .get(mist_path)
+                    .map(|r| r.to_string());
+                let rust_path = resolve_rust_path(mist_path, source_for_path.as_deref());
 
                 let (last_mapping, last_content, original_version) = {
                     let map_guard = self.mapping.lock().await;
@@ -417,7 +425,7 @@ impl Backend {
                     .map(|(rust, _)| *rust);
 
                 let (modified_rust, rust_pos) = if let Some(next_rust) = rust_next {
-                    let lsp_line = (next_rust.0 - 1) as u32;
+                    let lsp_line = next_rust.0 as u32;
                     let lsp_col = next_rust.1 as u32;
                     let modified = inject_marker_at(&last_content, lsp_line, lsp_col, &marker)?;
                     let pos = find_marker_position(&modified, &marker)?;
@@ -604,6 +612,55 @@ impl Backend {
             None => return,
         };
 
+        // Prune documents whose source files no longer exist on disk.
+        // Without this, deleted .mist files linger in the in-memory map
+        // and compute_mod_decls keeps generating stale pub mod declarations.
+        // Also clean up stale synthetic package.mist entries and generated
+        // mod.rs output files for directories with no remaining source children.
+        {
+            let mut docs = self.documents.lock().await;
+            let stale: Vec<PathBuf> = docs.keys().filter(|p| !p.exists()).cloned().collect();
+            for path in &stale {
+                let source_for_path = docs.get(path).map(|r| r.to_string());
+                docs.remove(path);
+                if path.extension().and_then(|e| e.to_str()) == Some("mist") {
+                    let rust_path = resolve_rust_path(path, source_for_path.as_deref());
+                    let _ = std::fs::remove_file(&rust_path);
+                    let map_path = rust_path.with_extension("map.json");
+                    let _ = std::fs::remove_file(&map_path);
+                }
+            }
+
+            // Also remove synthetic package.mist entries whose directories
+            // no longer contain any real .mist source files.
+            let synthetic: Vec<PathBuf> = docs
+                .keys()
+                .filter(|p| {
+                    p.file_name().and_then(|n| n.to_str()) == Some("package.mist") && !p.exists()
+                })
+                .cloned()
+                .collect();
+            for path in &synthetic {
+                docs.remove(path);
+            }
+
+            drop(docs);
+
+            // Clean up auxiliary state for deleted files
+            let mut versions = self.doc_versions.lock().await;
+            let mut contents = self.last_rust_contents.lock().await;
+            let mut diags = self.previous_diagnostics.lock().await;
+            let all_stale: Vec<PathBuf> = stale.into_iter().chain(synthetic).collect();
+            let stale_set: std::collections::HashSet<_> = all_stale.iter().collect();
+            versions.retain(|k, _| !stale_set.contains(k));
+            contents.retain(|k, _| !stale_set.contains(k));
+            for path in &all_stale {
+                if let Some(uri) = clean_lsp_url(path) {
+                    diags.remove(&uri);
+                }
+            }
+        }
+
         self.ensure_implicit_packages().await;
 
         // Collect sources first to avoid holding locks during transpile
@@ -619,7 +676,11 @@ impl Backend {
                 let package_mist = read_mist_package(crate_root);
                 let mod_decls = compute_mod_decls(&docs, &src_root, &package_mist);
                 for (path, decl) in mod_decls {
-                    if !decl.is_empty() {
+                    // Include files that have mod declarations OR that are
+                    // already known package/directory entries in the doc map.
+                    // The latter case covers parents whose children were
+                    // deleted — they need a regenerated (empty) mod.rs.
+                    if !decl.is_empty() || docs.contains_key(&path) {
                         if let Some(source) = docs.get(&path) {
                             result.push((path.clone(), source.to_string(), decl));
                         }
@@ -1032,6 +1093,18 @@ impl LanguageServer for Backend {
                 return;
             }
         };
+
+        // Non-.mist files pass through directly to rust-analyzer.
+        if !is_mist_file(&mist_path) {
+            let _ = self
+                .rust_analyzer
+                .lock()
+                .await
+                .did_open(uri, &params.text_document.text)
+                .await;
+            return;
+        }
+
         let source = params.text_document.text;
 
         self.documents
@@ -1054,6 +1127,18 @@ impl LanguageServer for Backend {
             }
         };
 
+        if !is_mist_file(&mist_path) {
+            if let Some(change) = params.content_changes.into_iter().last() {
+                let _ = self
+                    .rust_analyzer
+                    .lock()
+                    .await
+                    .did_change(uri, &change.text, params.text_document.version)
+                    .await;
+            }
+            return;
+        }
+
         if let Some(change) = params.content_changes.into_iter().last() {
             let source = change.text;
 
@@ -1086,6 +1171,11 @@ impl LanguageServer for Backend {
                 .expect("Failed to read file")
         };
 
+        if !is_mist_file(&mist_path) {
+            let _ = self.rust_analyzer.lock().await.did_save(uri, &text).await;
+            return;
+        }
+
         self.documents
             .lock()
             .await
@@ -1118,9 +1208,18 @@ impl LanguageServer for Backend {
             }
         };
 
+        if !is_mist_file(&mist_path) {
+            let _ = self.rust_analyzer.lock().await.did_close(uri).await;
+            return;
+        }
+
+        let source_for_path = {
+            let docs = self.documents.lock().await;
+            docs.get(&mist_path).map(|r| r.to_string())
+        };
         self.documents.lock().await.remove(&mist_path);
 
-        let rust_path = mist_to_rust_path(&mist_path);
+        let rust_path = resolve_rust_path(&mist_path, source_for_path.as_deref());
 
         if let Some(rust_uri) = clean_lsp_url(&rust_path) {
             let _ = self.rust_analyzer.lock().await.did_close(rust_uri).await;
@@ -1138,6 +1237,25 @@ impl LanguageServer for Backend {
             Ok(p) => p,
             Err(_) => return Ok(None),
         };
+
+        // Non-.mist files pass through directly to rust-analyzer.
+        if !is_mist_file(&mist_path) {
+            let result = self
+                .rust_analyzer
+                .lock()
+                .await
+                .request::<lsp_types::request::Completion>(params)
+                .await;
+
+            return match result {
+                Ok(r) => Ok(r),
+                Err(e) => {
+                    eprintln!("completion error (passthrough): {e}");
+                    Ok(None)
+                }
+            };
+        }
+
         let source = match self.documents.lock().await.get(&mist_path) {
             Some(r) => r.to_string(),
             None => return Ok(None),
@@ -1161,6 +1279,11 @@ impl LanguageServer for Backend {
             return Ok(None);
         };
 
+        let trigger_char: Option<String> = params
+            .context
+            .as_ref()
+            .and_then(|c| c.trigger_character.clone());
+
         let comp_params = CompletionParams {
             text_document_position: TextDocumentPositionParams {
                 text_document: TextDocumentIdentifier { uri: rust_uri },
@@ -1188,13 +1311,13 @@ impl LanguageServer for Backend {
 
         match completion_result {
             Ok(Some(CompletionResponse::Array(mut items))) => {
-                mist_ify_completions(&source, &mist_pos, &mut items);
+                mist_ify_completions(&source, &mist_pos, &mut items, trigger_char.as_deref());
 
                 Ok(Some(CompletionResponse::Array(items)))
             }
 
             Ok(Some(CompletionResponse::List(mut list))) => {
-                mist_ify_completions(&source, &mist_pos, &mut list.items);
+                mist_ify_completions(&source, &mist_pos, &mut list.items, trigger_char.as_deref());
 
                 Ok(Some(CompletionResponse::List(list)))
             }
@@ -1210,7 +1333,7 @@ impl LanguageServer for Backend {
         &self,
         params: GotoDefinitionParams,
     ) -> tower_lsp::jsonrpc::Result<Option<GotoDefinitionResponse>> {
-        let mist_uri = params.text_document_position_params.text_document.uri;
+        let mist_uri = &params.text_document_position_params.text_document.uri;
         let mist_pos = params.text_document_position_params.position;
         eprintln!(
             "[goto_definition] entered at mist ({}, {})",
@@ -1221,6 +1344,25 @@ impl LanguageServer for Backend {
             Ok(p) => p,
             Err(_) => return Ok(None),
         };
+
+        // Non-.mist files pass through directly to rust-analyzer.
+        if !is_mist_file(&mist_path) {
+            let result = self
+                .rust_analyzer
+                .lock()
+                .await
+                .request::<lsp_types::request::GotoDefinition>(params)
+                .await;
+
+            return match result {
+                Ok(r) => Ok(r),
+                Err(e) => {
+                    eprintln!("goto_definition error (passthrough): {e}");
+                    Ok(None)
+                }
+            };
+        }
+
         let source = match self.documents.lock().await.get(&mist_path) {
             Some(r) => r.to_string(),
             None => return Ok(None),
@@ -1390,13 +1532,32 @@ impl LanguageServer for Backend {
     }
 
     async fn hover(&self, params: HoverParams) -> tower_lsp::jsonrpc::Result<Option<Hover>> {
-        let mist_uri = params.text_document_position_params.text_document.uri;
+        let mist_uri = &params.text_document_position_params.text_document.uri;
         let mist_pos = params.text_document_position_params.position;
 
         let mist_path = match mist_uri.to_file_path() {
             Ok(p) => p,
             Err(_) => return Ok(None),
         };
+
+        // Non-.mist files pass through directly to rust-analyzer.
+        if !is_mist_file(&mist_path) {
+            let result = self
+                .rust_analyzer
+                .lock()
+                .await
+                .request::<lsp_types::request::HoverRequest>(params)
+                .await;
+
+            return match result {
+                Ok(r) => Ok(r),
+                Err(e) => {
+                    eprintln!("hover error (passthrough): {e}");
+                    Ok(None)
+                }
+            };
+        }
+
         let source = match self.documents.lock().await.get(&mist_path) {
             Some(r) => r.to_string(),
             None => return Ok(None),
@@ -1460,6 +1621,24 @@ impl LanguageServer for Backend {
             .to_file_path()
             .map_err(|_| tower_lsp::jsonrpc::Error::internal_error())?;
 
+        // Non-.mist files pass through directly to rust-analyzer.
+        if !is_mist_file(&mist_path) {
+            let result = self
+                .rust_analyzer
+                .lock()
+                .await
+                .request::<lsp_types::request::Formatting>(params)
+                .await;
+
+            return match result {
+                Ok(r) => Ok(r),
+                Err(e) => {
+                    eprintln!("formatting error (passthrough): {e}");
+                    Ok(None)
+                }
+            };
+        }
+
         let docs = self.documents.lock().await;
 
         let old_text = docs
@@ -1489,10 +1668,13 @@ impl LanguageServer for Backend {
     }
 }
 
-fn mist_ify_completions(source: &str, pos: &Position, items: &mut Vec<CompletionItem>) {
-    let existing: HashSet<String> = items.iter().map(|item| item.label.clone()).collect();
-
-    items.extend(keyword_completion_items().filter(|item| !existing.contains(&item.label)));
+fn mist_ify_completions(
+    source: &str,
+    pos: &Position,
+    items: &mut Vec<CompletionItem>,
+    trigger_char: Option<&str>,
+) {
+    let is_scoping_trigger = matches!(trigger_char, Some("." | ":"));
 
     for item in items.iter_mut() {
         item.text_edit = None;
@@ -1504,6 +1686,14 @@ fn mist_ify_completions(source: &str, pos: &Position, items: &mut Vec<Completion
         }
     }
 
+    if is_scoping_trigger {
+        return;
+    }
+
+    let existing: HashSet<String> = items.iter().map(|item| item.label.clone()).collect();
+
+    items.extend(keyword_completion_items().filter(|item| !existing.contains(&item.label)));
+
     let curr_scope = current_scope(&source, pos.line, pos.character);
 
     // =========================
@@ -1663,7 +1853,6 @@ fn mist_ify_completions(source: &str, pos: &Position, items: &mut Vec<Completion
         });
     }
 
-
     if matches!(curr_scope, Scope::Class | Scope::Struct) {
         items.push(CompletionItem {
             label: "field".into(),
@@ -1869,7 +2058,7 @@ async fn handle_ra_notifications(
                                     character: if mist_end_pos.line == mist_start_pos.line {
                                         mist_end_pos.character.max(mist_start_pos.character + 1)
                                     } else {
-                                        mist_end_pos.character.max(1)
+                                        mist_end_pos.character.max(0)
                                     },
                                 };
 

crates/analyzer/src/transpiler.rs

@@ -2,7 +2,7 @@ use std::path::{Path, PathBuf};
 
 use mist_codegen::RustCodegen;
 use mist_parser::rev_mapper::Mapping;
-use mist_parser::{MistFmtConfig, parse};
+use mist_parser::{MistFmtConfig, parse, parse_module};
 
 pub struct TranspiledFile {
     pub mist_path: PathBuf,
@@ -17,18 +17,43 @@ pub enum TranspileError<'a> {
     Semantic(Vec<mist_parser::semantics::SemanticError>),
 }
 
+/// Resolve the output `.rs` path for a `.mist` source file.
+///
+/// Always checks for a `pub module x;` declaration via `parse_module` and
+/// uses the declared module name as the filename when present.  Falls back
+/// to the literal file stem when parsing fails or the file has no module
+/// declaration.
+pub fn resolve_rust_path(mist_path: &Path, source: Option<&str>) -> PathBuf {
+    let mut rust_path = crate::from_mist_to_rust(mist_path.to_path_buf());
+    // Package files (package.mist) must output as <dir>/mod.rs so the Rust
+    // module hierarchy resolves correctly.
+    if mist_path.file_name().and_then(|n| n.to_str()) == Some("package.mist") {
+        rust_path.set_file_name("mod.rs");
+    } else if let Some(src) = source {
+        // Prioritize the module declaration from the source over the file stem.
+        // Every caller re-parses so we always pick up the current declaration.
+        if let Ok(Some((_, ref name))) = parse_module(src) {
+            if rust_path.file_name().map(|v| v.to_str()).unwrap_or_default() != Some("mod.rs") {
+                if let Some(ext) = rust_path.extension().map(|e| e.to_owned()) {
+                    let mut new_name = std::ffi::OsString::from(&name.0);
+                    new_name.push(".");
+                    new_name.push(ext);
+                    rust_path.set_file_name(new_name);
+                } else {
+                    rust_path.set_file_name(&name.0);
+                }
+            }
+        }
+    }
+    rust_path
+}
+
 pub fn transpile_mist<'a>(
     mist_path: &Path,
     source: &'a str,
     extra_mod_decl: &str,
 ) -> Result<TranspiledFile, TranspileError<'a>> {
-    let mut rust_path = crate::from_mist_to_rust(mist_path.to_path_buf());
-    // Package files (package.mist) must output as <dir>/mod.rs so the Rust module
-    // hierarchy resolves correctly (pub mod <child>; declarations look for sibling
-    // .rs files, and the parent module declaration looks for <dir>/mod.rs).
-    if mist_path.file_name().and_then(|n| n.to_str()) == Some("package.mist") {
-        rust_path.set_file_name("mod.rs");
-    }
+    let rust_path = resolve_rust_path(mist_path, Some(source));
 
     let parsed = parse(source).map_err(TranspileError::Parse)?;
 
@@ -58,13 +83,7 @@ pub fn transpile_mist_no_sem(
     source: &str,
     extra_mod_decl: &str,
 ) -> Result<TranspiledFile, String> {
-    let mut rust_path = crate::from_mist_to_rust(mist_path.to_path_buf());
-    // Package files (package.mist) must output as <dir>/mod.rs so the Rust module
-    // hierarchy resolves correctly (pub mod <child>; declarations look for sibling
-    // .rs files, and the parent module declaration looks for <dir>/mod.rs).
-    if mist_path.file_name().and_then(|n| n.to_str()) == Some("package.mist") {
-        rust_path.set_file_name("mod.rs");
-    }
+    let rust_path = resolve_rust_path(mist_path, Some(source));
 
     let parsed = parse(source).map_err(|e| format!("parse error: {e:?}"))?;
 

crates/codegen/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "mist-codegen"
-version = "0.4.0-alpha.0"
+version = "0.4.0"
 edition = "2024"
 description = "The Mist programming language Rust code generator"
 license = "Apache-2.0"

crates/codegen/src/class_decl.rs

@@ -45,7 +45,7 @@ impl ClassProcessedData {
             .collect::<Vec<Spanned<FunctionDecl>>>();
 
         let mut v_table = Vec::new();
-        let mut override_v_table = std::collections::HashMap::new();
+        let mut override_v_table = HashMap::new();
 
         for method in &methods {
             if matches!(method.item.visibility, Visibility::Public) {
@@ -113,7 +113,7 @@ impl ClassProcessedData {
             cg.add(&get_type_from_path(inherits).get_rust());
             cg.addln(",");
         } else {
-            cg.add_indentedln("pub _vptr: &'static [*const std::ffi::c_void],");
+            cg.add_indentedln("pub _vptr: &'static [*const core::ffi::c_void],");
         }
 
         for field in &self.fields {
@@ -174,11 +174,11 @@ impl ClassProcessedData {
             self.v_table.len()
         ));
 
-        cg.add_indentedln("pub const __V_TABLE: &'static [*const std::ffi::c_void] = &{");
+        cg.add_indentedln("pub const __V_TABLE: &'static [*const core::ffi::c_void] = &{");
         cg.indent += 1;
 
         if has_parent {
-            cg.add_indentedln("let mut table = [std::ptr::null(); Self::__V_COUNT];");
+            cg.add_indentedln("let mut table = [core::ptr::null(); Self::__V_COUNT];");
 
             cg.add_indentedln(&format!("let parent_table = {}::__V_TABLE;", parent_path));
             cg.add_indentedln(
@@ -193,7 +193,7 @@ impl ClassProcessedData {
                     .get_rust();
                 for (method_ident, is_virtual) in &overriden_method_idents.item {
                     cg.add_indentedln(&format!(
-                        "table[{}::__FN_{}] = {}::{} as *const std::ffi::c_void;",
+                        "table[{}::__FN_{}] = {}::{} as *const core::ffi::c_void;",
                         base_class_path,
                         method_ident.0.to_uppercase(),
                         self.self_path.get_rust(),
@@ -204,7 +204,7 @@ impl ClassProcessedData {
 
             for method_name in &self.v_table {
                 cg.add_indentedln(&format!(
-                    "table[Self::__FN_{}] = Self::__m_{} as *const std::ffi::c_void;",
+                    "table[Self::__FN_{}] = Self::__m_{} as *const core::ffi::c_void;",
                     method_name.0.to_uppercase(),
                     method_name.get_rust()
                 ));
@@ -216,7 +216,7 @@ impl ClassProcessedData {
             cg.indent += 1;
             for method_name in &self.v_table {
                 cg.add_indentedln(&format!(
-                    "Self::__m_{} as *const std::ffi::c_void,",
+                    "Self::__m_{} as *const core::ffi::c_void,",
                     method_name.get_rust()
                 ));
             }
@@ -293,7 +293,7 @@ impl ClassProcessedData {
 
         // Deref tests for override targets
         if self.inherits.is_some() && !self.override_v_table.is_empty() {
-            cg.add_indentedln("let this: &Self = &unsafe { std::mem::MaybeUninit::<Self>::zeroed().assume_init() };");
+            cg.add_indentedln("let this: &Self = &unsafe { core::mem::MaybeUninit::<Self>::zeroed().assume_init() };");
 
             for (override_tier, v) in &self.override_v_table {
                 if let Some(path) = &override_tier.0 {
@@ -346,7 +346,7 @@ impl ClassProcessedData {
         cg.addln(") -> Self {");
         cg.indent += 1;
 
-        cg.add_indentedln("let mut this: Self = unsafe { std::mem::MaybeUninit::<Self>::zeroed().assume_init() };");
+        cg.add_indentedln("let mut this: Self = unsafe { core::mem::MaybeUninit::<Self>::zeroed().assume_init() };");
         cg.add_indentedln("this._vptr = &Self::__V_TABLE;");
 
         for field in &self.fields {
@@ -433,7 +433,7 @@ impl ClassProcessedData {
             let generics_expr_str = Generics::from(self.generics.clone()).get_rust();
 
             cg.add(&format!(
-                "impl{} std::ops::Deref for {}{}",
+                "impl{} core::ops::Deref for {}{}",
                 generics_str,
                 self.name.get_rust(),
                 generics_expr_str
@@ -452,7 +452,7 @@ impl ClassProcessedData {
             cg.addln("}");
 
             cg.add(&format!(
-                "impl{} std::ops::DerefMut for {}{}",
+                "impl{} core::ops::DerefMut for {}{}",
                 generics_str,
                 self.name.get_rust(),
                 generics_expr_str
@@ -580,7 +580,7 @@ pub fn gen_method_point(method: &FunctionDecl, ctx: &mut Context, cg: &mut RustC
             mutable: mutable_self,
             ty: Box::new(TypeExpr::Path(
                 Path(vec![
-                    Identifier(String::from("std")),
+                    Identifier(String::from("core")),
                     Identifier(String::from("ffi")),
                     Identifier(String::from("c_void")),
                 ]),
@@ -590,12 +590,12 @@ pub fn gen_method_point(method: &FunctionDecl, ctx: &mut Context, cg: &mut RustC
     );
 
     cg.add(&TypeExpr::StaticFn(param_types, method.return_type.clone().map(Box::new)).get_rust());
-    cg.addln(" = std::mem::transmute(func_ptr);");
+    cg.addln(" = core::mem::transmute(func_ptr);");
 
     if mutable_self {
-        cg.add_indented("func(self as *mut Self as *const std::ffi::c_void");
+        cg.add_indented("func(self as *mut Self as *mut core::ffi::c_void");
     } else {
-        cg.add_indented("func(self as *const Self as *const std::ffi::c_void");
+        cg.add_indented("func(self as *const Self as *const core::ffi::c_void");
     }
 
     for (_, param) in &params {

crates/codegen/src/lib.rs

@@ -46,7 +46,7 @@ impl RustCodegen {
             indent: 0,
             crates: HashMap::new(),
             mapping: Mapping::new(mist_path),
-            position: RustMap(1, 0),
+            position: RustMap(0, 0),
         }
     }
 
@@ -186,7 +186,7 @@ impl<T> GenSpanTranslation for Spanned<T> {
     fn gen_span(&self, cg: &mut RustCodegen) {
         cg.mapping
             .map
-            .insert((cg.position, MistMap(self.line, self.column)));
+            .insert((cg.position, MistMap(self.line, self.column - 1)));
     }
 }
 
@@ -239,7 +239,6 @@ impl GetRust for TypeExpr {
                     path.get_rust()
                 }
             }
-            Self::Lifetime(name) => format!("'{}", name.get_rust()),
             Self::Tuple(types) => format!(
                 "({})",
                 types

crates/codegen/src/top_level.rs

@@ -24,7 +24,21 @@ impl GetRust for GenericsDecl {
 impl GetRust for GenericDecl {
     fn get_rust(&self) -> String {
         match self {
-            GenericDecl::Lifetime(name) => format!("'{}", name.get_rust()),
+            GenericDecl::Lifetime(name, requirements) => {
+                format!("'{}", name.get_rust())
+                    + &(if requirements.len() != 0 {
+                        format!(
+                            ": {}",
+                            requirements
+                                .into_iter()
+                                .map(GetRust::get_rust)
+                                .collect::<Vec<_>>()
+                                .join("+")
+                        )
+                    } else {
+                        String::new()
+                    })
+            }
             GenericDecl::Type(name, requirements) => {
                 name.get_rust()
                     + &(if requirements.len() != 0 {
@@ -32,7 +46,7 @@ impl GetRust for GenericDecl {
                             ": {}",
                             requirements
                                 .into_iter()
-                                .map(TypeExpr::get_rust)
+                                .map(GetRust::get_rust)
                                 .collect::<Vec<_>>()
                                 .join("+")
                         )
@@ -252,6 +266,33 @@ impl GenRust for TopLevelKind {
                 cg.indent -= 1;
                 cg.addln("}\n");
             }
+            Self::StructDeclTupleUnit {
+                visibility,
+                name,
+                generics,
+                unit,
+            } => {
+                cg.addln(&format!(
+                    "{}struct {}{}",
+                    visibility.get_rust(),
+                    name.get_rust(),
+                    generics.get_rust()
+                ));
+                cg.indent += 1;
+
+                if let Some(unit) = unit {
+                    cg.add(" (");
+                    for unit in unit {
+                        cg.add_indented("");
+                        unit.gen_rust(ctx, cg);
+                        cg.add(", ");
+                    }
+                    cg.add(")");
+                }
+
+                cg.indent -= 1;
+                cg.addln(";\n");
+            }
             Self::EnumDecl {
                 visibility,
                 name,

crates/mist-api/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "mist-api"
-version = "0.4.0-alpha.0"
+version = "0.4.0"
 edition = "2024"
 description = "The Mist programming language module system"
 license = "Apache-2.0"

crates/mist-api/src/builder.mist

@@ -19,19 +19,19 @@ use mist_parser::rev_mapper;
 #[derive(Debug, Clone)]
 pub struct MistDiagnosticMessage
 {
-    pub String message,
-    pub PathBuf file_path,
-    pub String file_name,
-    pub usize line,
-    pub usize column,
+    pub String message;
+    pub PathBuf file_path;
+    pub String file_name;
+    pub usize line;
+    pub usize column;
 }
 
 #[derive(Debug, Clone)]
 pub enum MistDiagnostic
 {
-    Error(MistDiagnosticMessage),
-    Warning(MistDiagnosticMessage),
-    Rust(CompilerMessage),
+    Error(MistDiagnosticMessage);
+    Warning(MistDiagnosticMessage);
+    Rust(CompilerMessage);
 }
 
 pub bool build(Vec<String> mut args, PathBuf root)
@@ -58,7 +58,9 @@ pub bool build(Vec<String> mut args, PathBuf root)
                             serde_json::from_str<rev_mapper::Mapping>(&map_str).expect("Failed to parse map file")
                         });
                         let mist_file = map.mist_path.strip_prefix(&root);
-                        let (_, rev_mapper::MistMap(line, column)) = map.find(&rev_mapper::RustMap(span.line_end, span.column_start)).unwrap_or_default();
+                        let rust_lookup = rev_mapper::RustMap(span.line_end - 1, span.column_start - 1);
+                        match map.find(&rust_lookup) {
+                            Some((_, rev_mapper::MistMap(line, column))) => {
                                 let mist_msg = MistDiagnosticMessage {
                                     message: format!("{}: {}",
                                         msg.message.message,
@@ -83,6 +85,12 @@ pub bool build(Vec<String> mut args, PathBuf root)
                                     }
                                 }
                             }
+                            None => {
+                                diagnostics.push(MistDiagnostic::Rust(msg));
+                                break;
+                            }
+                        }
+                    }
                 }
             }
             Ok(Message::BuildFinished(finish)) => {
@@ -135,5 +143,5 @@ pub Option<String> get_line(HashMap<PathBuf, Vec<String>> mut& files, MistDiagno
     let lines = files.entry(src_path.clone()).or_insert_with(() => {
         fs::read_to_string(src_path).expect("Unable to read mist file").lines().into_iter().map(String::from).collect()
     });
-    lines.get(msg.line - 1).map((v) => v.trim().to_string())
+    lines.get(msg.line.saturating_sub(1)).map((v) => v.trim().to_string())
 }

crates/mist-api/src/transpiler.mist

@@ -22,10 +22,10 @@ use serde::Deserialize;
 #[serde(default)]
 pub struct MistConfig
 {
-    pub PathBuf package,
-    pub Vec<PathBuf> packages,
-    pub Vec<PathBuf> include,
-    pub mist_parser::MistFmtConfig fmt,
+    pub PathBuf package;
+    pub Vec<PathBuf> packages;
+    pub Vec<PathBuf> include;
+    pub mist_parser::MistFmtConfig fmt;
 }
 
 impl MistConfig
@@ -77,6 +77,7 @@ pub void transpile(Path& root)
     let elapsed = start.elapsed();
     println!("\x1b[32m\nTranspile successful\x1b[0m in \x1b[34m{:.2?}\x1b[0m", elapsed);
     for incl in &config.include {
+        let incl = if incl.is_relative() { root.join(incl) } else { incl.clone() };
         if ends_with_star(&incl) {
             let sub_crates = incl.parent().expect("Failed to get parent");
             let entries = match fs::read_dir(sub_crates) {
@@ -95,7 +96,7 @@ pub void transpile(Path& root)
                 }
             }
         } else {
-            transpile(incl);
+            transpile(&incl);
         }
     }
 }
@@ -209,8 +210,8 @@ std::io::Result<bool> is_source_newer(Path& source, Path& output)
 
 pub enum TranspileError<'a>
 {
-    Parse(error::ParseError<'a>),
-    Semantic(Vec<mist_parser::semantics::SemanticError>),
+    Parse(error::ParseError<'a>);
+    Semantic(Vec<mist_parser::semantics::SemanticError>);
 }
 
 pub Result<(PathBuf, mist_codegen::RustCodegen, String), TranspileError<'a>> 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)

crates/parser/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "mist-parser"
-version = "0.4.0-alpha.0"
+version = "0.4.0"
 edition = "2024"
 description = "The Mist programming language parser"
 license = "Apache-2.0"

crates/parser/src/ast/mod.rs

@@ -41,7 +41,6 @@ pub enum TypeExpr {
     Path(Path, Option<Generics>),
     StaticFn(Vec<TypeExpr>, Option<Box<TypeExpr>>),
     Tuple(Vec<TypeExpr>),
-    Lifetime(Identifier),
     Void,
     Fn {
         kind: FnKind,
@@ -61,7 +60,7 @@ pub struct Spanned<T> {
 impl From<GenericDecl> for Generic {
     fn from(value: GenericDecl) -> Self {
         match value {
-            GenericDecl::Lifetime(life) => Generic::Lifetime(life),
+            GenericDecl::Lifetime(life, _) => Generic::Lifetime(life),
             GenericDecl::Type(ty, _) => Generic::Type(TypeExpr::Path(Path(vec![ty]), None)),
         }
     }

crates/parser/src/ast/top_level.rs

@@ -59,6 +59,12 @@ pub enum TopLevelKind {
         generics: GenericsDecl,
         fields: Vec<Spanned<FieldDecl>>,
     },
+    StructDeclTupleUnit {
+        visibility: Visibility,
+        name: Identifier,
+        generics: GenericsDecl,
+        unit: Option<Vec<Spanned<TypeExpr>>>,
+    },
     FunctionDecl(FunctionDecl),
     ClassDecl {
         visibility: Visibility,
@@ -82,8 +88,8 @@ pub struct GenericsDecl(pub Vec<GenericDecl>);
 
 #[derive(Debug, Clone, Serialize)]
 pub enum GenericDecl {
-    Lifetime(Identifier),
-    Type(Identifier, Vec<TypeExpr>),
+    Lifetime(Identifier, Vec<Generic>),
+    Type(Identifier, Vec<Generic>),
 }
 
 #[derive(Debug, Clone, Serialize)]

crates/parser/src/grammar.pest

@@ -90,7 +90,7 @@ mutable    = { "mut" }
 // ======================================================
 // GENERICS
 // ======================================================
-generic_decl  = { lifetime | (identifier ~ (":" ~ generic ~ ("+" ~ generic)*)?) }
+generic_decl  = { (lifetime | identifier) ~ (":" ~ generic ~ ("+" ~ generic)*)? }
 generics_decl = { "<" ~ (generic_decl ~ ("," ~ generic_decl)*)? ~ ">" }
 
 generic  = { lifetime | type_expr }
@@ -125,9 +125,9 @@ fn_kind_mut     = { "FnMut" }
 fn_kind = _{
     fn_kind_fn
   | fn_kind_unsafe
-  | fn_kind_closure
   | fn_kind_once
   | fn_kind_mut
+  | fn_kind_closure
 }
 
 fn_type = {
@@ -287,6 +287,10 @@ struct_decl = {
     visibility? ~ "struct" ~ identifier ~ generics_decl? ~ "{" ~ field_list ~ "}"
 }
 
+tuple_struct_decl = {
+    visibility? ~ "struct" ~ identifier ~ generics_decl? ~ tuple_type? ~ ";"
+}
+
 // ======================================================
 // ENUMS
 // ======================================================
@@ -399,7 +403,7 @@ type_alias = { "type" ~ identifier ~ generics_decl? ~ "=" ~ type_expr ~ ";" }
 
 top_level = {
     mod_attribute
-  | (attributes ~ (include_global | include_local | include_use_global | import | impl_for_decl | impl_decl | trait_decl | struct_decl | enum_decl | class_decl | declare_module | function_decl | const_decl | static_decl | type_alias))
+  | (attributes ~ (include_global | include_local | include_use_global | import | impl_for_decl | impl_decl | trait_decl | struct_decl | tuple_struct_decl | enum_decl | class_decl | declare_module | function_decl | const_decl | static_decl | type_alias))
 }
 
 // ======================================================

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

@@ -75,7 +75,6 @@ impl<'a> TryFrom<pest::iterators::Pair<'a, Rule>> for TypeExpr {
 
                 Ok(ty)
             }
-            Rule::lifetime => Ok(TypeExpr::Lifetime(inner.next().unwrap().try_into()?)),
 
             Rule::void_type => Ok(TypeExpr::Void),
             Rule::tuple_type => Ok(TypeExpr::Tuple(collect_recovered(inner)?)),
@@ -132,6 +131,7 @@ impl<'a> TryFrom<pest::iterators::Pair<'a, Rule>> for GenericDecl {
             if let Some(pair) = consume_rule(&mut inner, Rule::lifetime) {
                 Ok(GenericDecl::Lifetime(
                     pair.into_inner().next().unwrap().try_into()?,
+                    collect_recovered(inner)?,
                 ))
             } else {
                 Ok(GenericDecl::Type(

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

@@ -57,6 +57,21 @@ impl<'a> TryFrom<pest::iterators::Pair<'a, Rule>> for TopLevelKind {
                 fields: collect_recovered(inner.next().unwrap().into_inner())?,
             }),
 
+            Rule::tuple_struct_decl => Ok(TopLevelKind::StructDeclTupleUnit {
+                visibility: Visibility::try_from(&mut inner)?,
+
+                name: inner.next().unwrap().try_into()?,
+
+                generics: consume_rule(&mut inner, Rule::generics_decl)
+                    .map(GenericsDecl::try_from)
+                    .transpose()
+                    .map(|v| v.unwrap_or_default())?,
+
+                unit: consume_rule(&mut inner, Rule::tuple_type)
+                    .map(|v| collect_recovered(v.into_inner()))
+                    .transpose()?,
+            }),
+
             Rule::class_decl => Ok(TopLevelKind::ClassDecl {
                 visibility: Visibility::try_from(&mut inner)?,
 
@@ -147,7 +162,6 @@ impl<'a> TryFrom<pest::iterators::Pair<'a, Rule>> for TopLevelKind {
                     .unwrap()
                     .to_string(),
             )),
-
             _ => AstError::bug_unimplemented(pair),
         }
     }

crates/parser/src/rev_mapper.rs

@@ -3,12 +3,12 @@ use std::{collections::HashSet, path::PathBuf};
 use serde::{Deserialize, Serialize};
 
 #[derive(
-    Debug, Default, Clone, Copy, Hash, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize,
+    Debug, Clone, Copy, Hash, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize,
 )]
 pub struct MistMap(pub usize, pub usize);
 
 #[derive(
-    Debug, Default, Clone, Copy, Hash, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize,
+    Debug, Clone, Copy, Hash, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize,
 )]
 pub struct RustMap(pub usize, pub usize);
 

mist-test/src/items/class_test.mist

@@ -22,6 +22,8 @@ pub class Animal
         "Unknown".to_string()
     }
 
+    pub virtual void speak_mut(&mut self){}
+
     pub void test_speak<'a>(&'a self)
     {
         assert_eq!(self.speak(), "Woof!");

mist-test/src/items/struct_test.mist

@@ -100,6 +100,9 @@ pub void test_struct_destructure_rename()
     assert_eq!(b, 15);
 }
 
+struct TuplePoint(i32, i32);
+struct Unit;
+
 pub void run_tests()
 {
     test_struct_create_access();

src/main.mist

@@ -16,10 +16,11 @@ void main()
         process::exit(1);
     }
     match args[1].as_str() {
-        "run" | "build" | "check" | "test" | "publish" | "bench" | "doc" | "fix" | "clippy" | "r" | "b" | "c" => {
+        "run" | "build" | "check" | "test" | "bench" | "doc" | "fix" | "clippy" | "r" | "b" | "c" => {
             let mut root = env::current_dir().expect("Unable to find project root");
             modify_args(&mut args, &mut root);
             transpiler::transpile(&root);
+
             println!("");
             if builder::build(args, root) {
                 println!("\x1b[32m\nBuild successful\x1b[0m");
@@ -27,6 +28,22 @@ void main()
                 println!("\x1b[31m\nBuild failed\x1b[0m");
             }
         }
+        "publish" => {
+            let mut root = env::current_dir().expect("Unable to find project root");
+            modify_args(&mut args, &mut root);
+            transpiler::transpile(&root);
+
+            let status = std::process::Command::new("cargo")
+                .args(args)
+                .status()
+                .expect("Failed to run cargo");
+
+            if status.success() {
+                println!("\x1b[32m\nPublished successfully\x1b[0m");
+            } else {
+                println!("\x1b[31m\nFailed to publish\x1b[0m");
+            }
+        }
         "transpile" | "t" => {
             let mut root = env::current_dir().expect("Unable to find project root");
             modify_args(&mut args, &mut root);