fix many warnings

src/executor.rs

@@ -1,6 +1,5 @@
 use super::{Value, Type, FunctionDeclaration};
 use super::parser::{ParseTree, ParseError};
-use super::tokenizer::Op;
 
 use std::collections::HashMap;
 use std::borrow::Cow;
@@ -186,8 +185,6 @@ impl<I: Iterator<Item = Result<ParseTree, ParseError>>> Executor<I> {
                     self.exec(*scope, &mut Cow::Borrowed(&locals))
                 }
             },
-            ParseTree::GlobalEqu(ident, body) => todo!(),
-            ParseTree::LazyGlobalEqu(ident, body) => todo!(),
             ParseTree::FunctionDefinition(ident, args, r, body, scope) => {
                 let existing = locals.get(&ident).or(self.globals.get(&ident)).cloned();
 
@@ -197,7 +194,7 @@ impl<I: Iterator<Item = Result<ParseTree, ParseError>>> Executor<I> {
                         let locals = locals.to_mut();
 
                         locals.insert(ident.clone(), Object::Function(Function {
-                            decl: FunctionDeclaration { name: ident.clone(), r, args },
+                            decl: FunctionDeclaration { _name: ident.clone(), _r: r, args },
                             body: Some(body)
                         }));
 

src/lib.rs

@@ -3,21 +3,18 @@ mod tokenizer;
 mod parser;
 mod executor;
 
-pub use tokenizer::{Tokenizer, TokenizeError};
-pub use parser::{Parser, ParseError};
-pub use executor::{Executor, RuntimeError};
-
 use std::fmt::Display;
+use std::io::BufRead;
 
 #[derive(Clone, Debug)]
-pub(crate) enum Type {
+pub enum Type {
     Float,
     Int,
     Bool,
     String,
     Nil,
     Any,
-    Function(Box<Type>, Vec<Type>),
+    _Function(Box<Type>, Vec<Type>),
 }
 
 impl Display for Type {
@@ -29,7 +26,7 @@ impl Display for Type {
             Self::String => "String".into(),
             Self::Nil => "Nil".into(),
             Self::Any => "Any".into(),
-            Self::Function(r, _) => format!("Function -> {}", *r)
+            Self::_Function(r, _) => format!("Function -> {}", *r)
         })
     }
 }
@@ -70,7 +67,11 @@ impl Display for Value {
 
 #[derive(Clone, Debug)]
 pub(crate) struct FunctionDeclaration {
-    name: String,
-    r: Type,
+    _name: String,
+    _r: Type,
     args: Vec<(String, Type)>,
 }
+
+pub fn evaluate<R: BufRead>(r: R) -> impl Iterator<Item = Result<Value, executor::RuntimeError>> {
+    executor::Executor::new(parser::Parser::new(tokenizer::Tokenizer::new(r)))
+}

src/parser.rs

@@ -34,7 +34,7 @@ impl Display for ParseError {
 impl error::Error for ParseError {}
 
 #[derive(Clone, Debug)]
-pub enum ParseTree {
+pub(crate) enum ParseTree {
     // Mathematical Operators
     Add(Box<ParseTree>, Box<ParseTree>),
     Sub(Box<ParseTree>, Box<ParseTree>),
@@ -54,8 +54,6 @@ pub enum ParseTree {
     // Defining Objects
     Equ(String, Box<ParseTree>, Box<ParseTree>),
     LazyEqu(String, Box<ParseTree>, Box<ParseTree>),
-    GlobalEqu(String, Box<ParseTree>),
-    LazyGlobalEqu(String, Box<ParseTree>),
     FunctionDefinition(String, Vec<(String, Type)>, Type, Box<ParseTree>, Box<ParseTree>),
 
     // Functional Operations
@@ -129,7 +127,7 @@ impl ParseTree {
                                 Box::new(ParseTree::parse(tokens, globals, locals)?),
                                 Box::new(ParseTree::parse(tokens, globals, locals)?)
                             )),
-                            Op::Equ | Op::LazyEqu | Op::GlobalEqu | Op::LazyGlobalEqu => {
+                            Op::Equ | Op::LazyEqu => {
                                 let token = tokens.next()
                                     .ok_or(ParseError::UnexpectedEndInput)?
                                     .map_err(|e| ParseError::TokenizeError(e))?;
@@ -144,12 +142,6 @@ impl ParseTree {
                                             Box::new(ParseTree::parse(tokens, globals, locals)?),
                                             Box::new(ParseTree::parse(tokens, globals, locals)?)
                                         )),
-                                        Op::GlobalEqu => Ok(ParseTree::GlobalEqu(ident.clone(),
-                                            Box::new(ParseTree::parse(tokens, globals, locals)?)
-                                        )),
-                                        Op::LazyGlobalEqu => Ok(ParseTree::LazyGlobalEqu(ident.clone(),
-                                            Box::new(ParseTree::parse(tokens, globals, locals)?)
-                                        )),
                                         _ => panic!("Operator literally changed under your nose"),
                                     }
                                 } else {
@@ -173,8 +165,8 @@ impl ParseTree {
                                         let locals = locals.to_mut();
 
                                         locals.insert(ident.clone(), FunctionDeclaration {
-                                            name: ident.clone(),
-                                            r: Type::Any,
+                                            _name: ident.clone(),
+                                            _r: Type::Any,
                                             args: args.clone(),
                                         });
 
@@ -240,7 +232,7 @@ impl ParseTree {
 }
 
 /// Parses input tokens and produces ParseTrees for an Executor
-pub struct Parser<I: Iterator<Item = Result<Token, TokenizeError>>> {
+pub(crate) struct Parser<I: Iterator<Item = Result<Token, TokenizeError>>> {
     tokens: I,
 
     // These are used to keep track of functions in the current context
@@ -258,11 +250,6 @@ impl<I: Iterator<Item = Result<Token, TokenizeError>>> Parser<I> {
             locals: HashMap::new()
         }
     }
-
-    pub fn globals(mut self, g: HashMap<String, FunctionDeclaration>) -> Self {
-        self.globals = g;
-        self
-    }
 }
 
 impl<I: Iterator<Item = Result<Token, TokenizeError>>> Iterator for Parser<I> {

src/tokenizer.rs

@@ -33,7 +33,7 @@ impl Display for TokenizeError {
 impl error::Error for TokenizeError {}
 
 #[derive(Debug, Clone)]
-pub enum Op {
+pub(crate) enum Op {
     Add,
     Sub,
     Mul,
@@ -42,8 +42,6 @@ pub enum Op {
     Equ,
     Mod,
     LazyEqu,
-    GlobalEqu,
-    LazyGlobalEqu,
     FunctionDeclare(usize),
     Compose,
     Id,
@@ -62,7 +60,7 @@ pub enum Op {
 }
 
 #[derive(Debug, Clone)]
-pub enum Token {
+pub(crate) enum Token {
     Identifier(String),
     Operator(Op),
     Constant(Value),
@@ -100,8 +98,6 @@ impl Token {
             "%" => Ok(Token::Operator(Op::Mod)),
             "="  => Ok(Token::Operator(Op::Equ)),
             "."  => Ok(Token::Operator(Op::LazyEqu)),
-            "=>" => Ok(Token::Operator(Op::GlobalEqu)),
-            ".>" => Ok(Token::Operator(Op::LazyGlobalEqu)),
             "~"  => Ok(Token::Operator(Op::Compose)),
             "," => Ok(Token::Operator(Op::Id)),
             "?" => Ok(Token::Operator(Op::If)),
@@ -149,7 +145,7 @@ impl Token {
 }
 
 /// Tokenize an input stream of source code for a Parser
-pub struct Tokenizer<R: BufRead> {
+pub(crate) struct Tokenizer<R: BufRead> {
     reader: R,
     tokens: VecDeque<Token>,
 }