From 338bffe40ffea3f7cec94e8da8d96813b7f844ff Mon Sep 17 00:00:00 2001
From: Mel <einebeere@gmail.com>
Date: Mon, 18 Oct 2021 00:28:31 +0200
Subject: Parsing expressions scaffold

---
 src/main.rs      |  7 ++++---
 src/parse/ast.rs | 16 ++++++++++++++++
 src/parse/mod.rs | 10 ++++++++++
 3 files changed, 30 insertions(+), 3 deletions(-)
 create mode 100644 src/parse/ast.rs
 create mode 100644 src/parse/mod.rs

diff --git a/src/main.rs b/src/main.rs
index 3b23d8e..2dab78d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,12 +1,13 @@
 mod lex;
+mod parse;
 
 use lex::lexer::Lexer;
 
+use crate::parse::parse;
+
 fn main() {
     let source = "1 + 2";
     let lexer = Lexer::new(source);
 
-    for token in lexer {
-        println!("{:?}", token);
-    }
+    println!("{:?}", parse(lexer.peekable()));
 }
diff --git a/src/parse/ast.rs b/src/parse/ast.rs
new file mode 100644
index 0000000..2f30eaf
--- /dev/null
+++ b/src/parse/ast.rs
@@ -0,0 +1,16 @@
+use crate::lex::token::Token;
+
+#[derive(Debug)]
+pub enum Expression {
+    Binary {
+        left: Box<Expression>,
+        op: Token,
+        right: Box<Expression>,
+    },
+    Unary {
+        op: Token,
+        right: Box<Expression>,
+    },
+    Group(Box<Expression>),
+    Literal(Token),
+}
diff --git a/src/parse/mod.rs b/src/parse/mod.rs
new file mode 100644
index 0000000..2938131
--- /dev/null
+++ b/src/parse/mod.rs
@@ -0,0 +1,10 @@
+pub mod ast;
+
+use crate::parse::ast::Expression;
+use std::iter::Peekable;
+
+use crate::lex::token::Token;
+
+pub fn parse(tokens: Peekable<impl Iterator<Item = Token>>) -> Expression {
+    todo!()
+}
-- 
cgit 1.4.1