refactor: removed unused enum

Cargo.lock

@@ -3,8 +3,8 @@
 version = 3
 
 [[package]]
-name = "OverComplicatedCalculator"
-version = "0.1.0"
+name = "over_complicated_calculator"
+version = "1.0.0"
 dependencies = [
  "thiserror",
 ]

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
-name = "OverComplicatedCalculator"
-version = "0.1.0"
+name = "over_complicated_calculator"
+version = "1.0.0"
 edition = "2018"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

src/lexer/fsm.rs

@@ -2,6 +2,7 @@ use std::str::FromStr;
 
 use crate::lexer::tokens::{OpType, Token, TokenMeta};
 
+#[allow(dead_code)]
 const STATES: [i32; 6] = [1, 2, 3, 4, 5, 6];
 const FINAL_STATES: [i32; 4] = [2, 3, 4, 5];
 const ERROR_STATE: i32 = 6;
@@ -31,6 +32,7 @@ pub struct FSM {
     last: i32,
 }
 
+#[allow(dead_code)]
 impl FSM {
     #[inline]
     pub fn new() -> FSM {

src/lexer/mod.rs

@@ -1,14 +1,8 @@
-use std::collections::VecDeque;
-use std::fs::File;
-use std::path::Path;
-use std::str::{Chars, FromStr};
-
 use tokens::Token;
 
 use crate::lexer::errors::LexerErrors;
-use crate::lexer::errors::LexerErrors::EmptyTextSequenceError;
-use crate::lexer::fsm::{FSM, get_token};
-use crate::lexer::tokens::{OpType, TokenMeta};
+use crate::lexer::fsm::FSM;
+use crate::lexer::tokens::TokenMeta;
 
 pub mod errors;
 pub mod tokens;
@@ -90,6 +84,8 @@ impl Lexer {
 #[warn(dead_code)]
 #[cfg(test)]
 mod test {
+    use tokens::OpType;
+
     use super::*;
 
     #[test]

src/lexer/tokens.rs

@@ -31,13 +31,6 @@ impl OpType {
     }
 }
 
-/// Bracket types, either OPEN or CLOSE.
-#[derive(Debug)]
-pub enum BrType {
-    OPEN,
-    CLOSE,
-}
-
 /// # Tokens
 /// The tokens all contain [metadata](TokenMeta).
 /// 1. `ID`: A number, parsed into 64 bit floating-point.

src/main.rs

@@ -1,7 +1,7 @@
 use std::io;
 use std::io::Write;
 
-use OverComplicatedCalculator::calculate;
+use over_complicated_calculator::calculate;
 
 fn main() {
     println!("Hi there! Welcome to OverComplicatedCalculator v1.0!");

src/parser/mod.rs

@@ -41,14 +41,14 @@ fn expect_token(maybe_token: &Option<Token>) -> Result<&Token> {
     }
 }
 
-pub fn parse(mut lexer: lexer::Lexer) -> Result<f64> {
+pub fn parse(lexer: lexer::Lexer) -> Result<f64> {
     let mut tbox = TokenBox { lexer, cur_token: None, regress: false };
     s_proc(&mut tbox)
 }
 
 pub fn s_proc(tbox: &mut TokenBox) -> Result<f64> {
     println!("Proc S");
-    let mut result = a_proc(tbox)?;
+    let result = a_proc(tbox)?;
     match tbox.read_token()? {
         None => Ok(result),
         Some(token) => Err(ParserErrors::UnexpectedTokenError(token.clone(), String::from("S"))),
@@ -57,12 +57,12 @@ pub fn s_proc(tbox: &mut TokenBox) -> Result<f64> {
 
 fn a_proc(tbox: &mut TokenBox) -> Result<f64> {
     println!("Proc A");
-    let mut result = m_proc(tbox)?;
+    let result = m_proc(tbox)?;
     match &tbox.read_token()? {
         Some(Token::OP(_, OpType::ADD)) => Ok(result + a_proc(tbox)?),
         Some(Token::OP(_, OpType::SUB)) => Ok(result - a_proc(tbox)?),
         None => Ok(result),
-        Some(token) => {
+        Some(_) => {
             tbox.regress();
             Ok(result)
         }
@@ -71,12 +71,12 @@ fn a_proc(tbox: &mut TokenBox) -> Result<f64> {
 
 fn m_proc(tbox: &mut TokenBox) -> Result<f64> {
     println!("Proc M");
-    let mut result = g_proc(tbox)?;
+    let result = g_proc(tbox)?;
     match &tbox.read_token()? {
         Some(Token::OP(_, OpType::MUL)) => Ok(result * m_proc(tbox)?),
         Some(Token::OP(_, OpType::DIV)) => Ok(result / m_proc(tbox)?),
         None => Ok(result),
-        Some(token) => {
+        Some(_) => {
             tbox.regress();
             Ok(result)
         }
@@ -85,11 +85,11 @@ fn m_proc(tbox: &mut TokenBox) -> Result<f64> {
 
 fn g_proc(tbox: &mut TokenBox) -> Result<f64> {
     println!("Proc G");
-    let mut result = p_proc(tbox)?;
+    let result = p_proc(tbox)?;
     match tbox.read_token()? {
         Some(Token::OP(_, OpType::POW)) => Ok(result.powf(g_proc(tbox)?)),
         None => Ok(result),
-        Some(token) => {
+        Some(_) => {
             tbox.regress();
             Ok(result)
         }
@@ -123,6 +123,7 @@ mod test {
         Ok(())
     }
 
+    //noinspection ALL
     #[test]
     fn skript_formula_1() -> Result<()> {
         let res = parse(lexer::Lexer::new("2+5/3*2"))?;