cl-lexer: Move lexer into its own crate

cl-repl/src/lib.rs

@@ -74,12 +74,9 @@ pub mod program {
     };
 
     use cl_ast::{self as ast, ast_impl::format::Pretty};
+    use cl_lexer::Lexer;
     use cl_parser::{error::PResult, Parser};
-    use conlang::{
-        // pretty_printer::{PrettyPrintable, Printer},
-        lexer::Lexer,
-        resolver::{error::TyResult, Resolver},
-    };
+    use conlang::resolver::{error::TyResult, Resolver};
     use std::{fmt::Display, io::Write};
 
     pub struct Parsable;
@@ -228,7 +225,7 @@ pub mod cli {
             match (repl, path) {
                 (true, Some(path)) => {
                     let prog = std::fs::read_to_string(path).unwrap();
-                    let code = cl_parser::Parser::new(conlang::lexer::Lexer::new(&prog))
+                    let code = cl_parser::Parser::new(cl_lexer::Lexer::new(&prog))
                         .file()
                         .unwrap();
                     let mut env = cl_interpret::env::Environment::new();