begin implementing composable parser

src/repr/token.rs

@@ -2,7 +2,7 @@ use std::fmt::Display;
 
 use logos::{Lexer, Logos};
 
-#[derive(Clone, Debug, Logos, PartialEq, Eq)]
+#[derive(Clone, Debug, Logos, PartialEq, Eq, Hash)]
 #[logos(skip r"[ \t\r\n\f]+")]
 pub enum Token {
     /*

src/stage/parse/expression/mod.rs

@@ -46,6 +46,12 @@ impl Precedence {
     }
 }
 
+impl From<Token> for Precedence {
+    fn from(token: Token) -> Self {
+        Self::of(&token)
+    }
+}
+
 fn parse_prefix(compiler: &mut Compiler, lexer: &mut Lexer<'_>) -> Result<Expression, ParseError> {
     match lexer.peek_token().unwrap().clone() {
         Token::Integer(_) => Ok(Expression::Integer(parse_integer(compiler, lexer)?)),

src/stage/parse/mod.rs

@@ -1,6 +1,7 @@
 mod block;
 mod expression;
 mod function;
+mod parser;
 mod statement;
 mod ty;