Working pre-processing module name

crates/analyzer/src/transpiler.rs

@@ -3,10 +3,7 @@ use std::{
     path::{Path, PathBuf},
 };
 
-use mist_parser::{
+use mist_parser::{ast::TopLevel, error::ParseError};
-    ast::{Identifier, TopLevel, Visibility},
-    error::ParseError,
-};
 
 pub fn build(root: &PathBuf) {
     let src_dir = root.join("src");
@@ -136,9 +133,7 @@ pub fn transpile_file(path: &Path, output_path: &Path) -> Result<(), String> {
     });
 
     // If parsing fails, return the error string back gracefully so the LSP can show it
-    let ast = parser_result
+    let ast = parser_result.map_err(|e| format!("parse failed in {}:\n{}", path.display(), e))?;
-        .map_err(|e| format!("parse failed in {}:\n{}", path.display(), e))?
-        .1;
 
     let mut gc = mist_codegen::RustCodegen::new();
     let output = gc.generate(ast);
@@ -149,12 +144,10 @@ pub fn transpile_file(path: &Path, output_path: &Path) -> Result<(), String> {
     Ok(())
 }
 
-pub fn transpile_text<'a>(
+pub fn transpile_text<'a>(source: &'a str) -> Result<String, ParseError<'a, Vec<TopLevel>>> {
-    source: &'a str,
-) -> Result<String, ParseError<'a, (Option<(Visibility, Identifier)>, Vec<TopLevel>)>> {
     let mut gc = mist_codegen::RustCodegen::new();
 
-    Ok(gc.generate(mist_parser::parse(&source)?.1))
+    Ok(gc.generate(mist_parser::parse(&source)?))
 }
 
 fn should_skip(source: &Path, output: &Path) -> bool {

crates/mist-api/src/transpiler.mist

@@ -137,24 +137,39 @@ impl modules::Module {
 
             format!("pub mod {};\n", self.name)
         } else {
-            transpile_file(&self.path, output_file, &output)
+            let source = match fs::read_to_string(&self.path) {
-        }
-    }
-}
-
-fn transpile_file(path *PathBuf, mut output_file PathBuf, mod_decl *str) String {
-    let source = match fs::read_to_string(&path) {
                 Ok[s] => s;
                 Err[e] => {
-            eprintln!("error: failed to read file {}\n  {}", path.display(), e);
+                    eprintln!("error: failed to read file {}\n  {}", self.path.display(), e);
 
                     process::exit(1);
                 }
             };
 
+            transpile_file(&self.path, &source, output_file, &output, mist_parser::parse_module(&source).expect("Failed parsing module"))
+        }
+    }
+}
+
+fn transpile_file(path *PathBuf, source *str, mut output_file PathBuf, mod_decl *str, curr_mod_decl Option<[mist_parser::ast::Visibility, mist_parser::ast::Identifier]>) String {
+    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 let Some[ext] = output_file.extension().map(fn(e) -> e.to_owned()) {
+                let mut new_name = std::ffi::OsString::from(&name.0);
+
+                new_name.push(".");
+                new_name.push(ext);
+
+                output_file.set_file_name(new_name);
+            } else {
+                output_file.set_file_name(&name.0);
+            }
+        }
+    }
+
     let mut gc = mist_codegen::RustCodegen::new();
 
-    let parsed = match mist_parser::parse(&source) {
+    let parsed = match mist_parser::parse(source) {
         Ok[ast] => ast;
         Err[e] => {
             match e {
@@ -186,21 +201,7 @@ fn transpile_file(path *PathBuf, mut output_file PathBuf, mod_decl *str) String
         }
     };
 
-    let output = gc.generate(parsed.1);
+    let output = gc.generate(parsed);
-
-    if let [Some[[vis, name]], _] = parsed {
-        if output_file.file_name().map(fn(v) -> v.to_str()).unwrap_or_default() != Some("mod.rs") {
-            if let Some[ext] = output_file.extension().map(fn(e) -> e.to_owned()) {
-                let mut new_name = std::ffi::OsString::from(&name.0);
-
-                new_name.push(".");
-                new_name.push(ext);
-
-                output_file.set_file_name(new_name);
-            } else {
-                output_file.set_file_name(&name.0);
-            }
-        }
 
     let res = fs::write(&output_file, format!("{mod_decl}{output}"));
 
@@ -214,20 +215,9 @@ fn transpile_file(path *PathBuf, mut output_file PathBuf, mod_decl *str) String
         process::exit(1);
     }
 
+    if let Some[[vis, name]] = &curr_mod_decl {
         format!("{}mod {};\n", vis.get_rust(), name.get_rust())
     } else {
-        let res = fs::write(&output_file, format!("{mod_decl}{output}"));
-
-        if res.is_err() {
-            eprintln!(
-                "error: failed to write output {}\n  {}",
-                output_file.display(),
-                res.unwrap_err(),
-            );
-
-            process::exit(1);
-        }
-
         String::new()
     }
 }

crates/parser/src/grammar.pest

@@ -73,7 +73,7 @@ program = {
 }
 
 module_program = {
-    SOI ~ declare_module?
+    SOI ~ top_level?
 }
 
 // ======================================================

crates/parser/src/lib.rs

@@ -14,12 +14,7 @@ use crate::error::{IntoErr, ParseError};
 #[grammar = "./src/grammar.pest"]
 pub struct MistParser;
 
-pub fn parse<'a>(
+pub fn parse<'a>(source: &'a str) -> Result<Vec<TopLevel>, ParseError<'a, Vec<TopLevel>>> {
-    source: &'a str,
-) -> Result<
-    (Option<(Visibility, Identifier)>, Vec<TopLevel>),
-    ParseError<'a, (Option<(Visibility, Identifier)>, Vec<TopLevel>)>,
-> {
     let mut pairs = MistParser::parse(Rule::program, source)?;
 
     let mut statements = vec![];
@@ -32,20 +27,10 @@ pub fn parse<'a>(
         }
     }
 
-    let m = if let Some(v) = statements.get(0) {
-        if let TopLevelKind::DeclareModule(vis, name) = &v.0.item {
-            Some((vis.clone(), name.clone()))
-        } else {
-            None
-        }
-    } else {
-        None
-    };
-
     match analyzer.build(statements) {
-        Ok(v) => Ok((m, v)),
+        Ok(v) => Ok(v),
         Err(e) => {
-            let rec = e.recovered.clone().map(move |r| (m, r));
+            let rec = e.recovered.clone();
 
             let mut e2 = e.get();