finished move to rust

src/grammar.lalrpop

@@ -1,4 +1,3 @@
-use std::str::FromStr;
 use crate::ast;
 
 grammar(id_generator: &ast::IdGenerator);

src/main.rs

@@ -9,9 +9,7 @@ extern crate lalrpop_util;
 lalrpop_mod!(pub grammar); // synthesized by LALRPOP
 
 use std::fs;
-use std::io::Write;
-// mod compiler;
-// use inkwell::context::Context;
+
 extern crate clap;
 use clap::{App, Arg};
 
@@ -49,7 +47,7 @@ fn main() {
         .last()
         .unwrap()
         .clone();
-    let output = matches.value_of("OUTPUT").unwrap_or(default_output);
+    let _output = matches.value_of("OUTPUT").unwrap_or(default_output);
 
     let contents = fs::read_to_string(input).expect("input file not found");
     let unknown_id_gen = ast::IdGenerator::new();

src/type_checking.rs

@@ -148,15 +148,6 @@ impl Context {
         return ctx;
     }
 
-    fn add_type(&self, name: String, type_decl: &ast::TypeDeclaration) -> Context {
-        let mut ctx = self.clone();
-        ctx.environment.insert(
-            name.to_string(),
-            NamedEntity::TypeDeclaration(type_decl.clone()),
-        );
-        return ctx;
-    }
-
     fn set_current_function_return(&self, function: &ast::TypeUsage) -> Context {
         let mut ctx = self.clone();
         ctx.current_function_return = Some(function.clone());
@@ -183,7 +174,7 @@ fn type_exists(ctx: &Context, type_: &ast::TypeUsage) -> Result<()> {
                 }
             }
         }
-        ast::TypeUsage::Unknown(unknown) => {} // do nothing
+        ast::TypeUsage::Unknown(_) => {} // do nothing
         ast::TypeUsage::Function(function) => {
             let mut errs = vec![];
             for arg in function.arguments.iter() {