First commit

src/expr.rs

@@ -0,0 +1,43 @@
+use std::ops::{Add, Mul, Neg, Not, Sub};
+
+use crate::binary_repr::BinaryRepr;
+
+pub enum BinOp {
+    Plus,
+    Sub,
+    Mul,
+    Div,
+}
+
+pub enum UnaryOp {
+    Not,
+    Neg,
+}
+
+pub enum Expr {
+    Constant(BinaryRepr),
+    BinaryOp(Box<Self>, BinOp, Box<Self>),
+    UnaryOp(UnaryOp, Box<Self>),
+    Group(Box<Self>),
+}
+
+impl Expr {
+    pub fn into_binary_repr(self) -> BinaryRepr {
+        match self {
+            Self::Constant(binary_repr) => binary_repr,
+            Self::BinaryOp(expr, bin_op, expr1) => {
+                (match bin_op {
+                    BinOp::Plus => <BinaryRepr as Add>::add,
+                    BinOp::Sub => <BinaryRepr as Sub>::sub,
+                    BinOp::Mul => <BinaryRepr as Mul>::mul,
+                    BinOp::Div => todo!(),
+                })(expr.into_binary_repr(), expr1.into_binary_repr())
+            }
+            Self::UnaryOp(unary_op, expr) => (match unary_op {
+                UnaryOp::Neg => <BinaryRepr as Neg>::neg,
+                UnaryOp::Not => <BinaryRepr as Not>::not,
+            })(expr.into_binary_repr()),
+            Self::Group(group) => group.into_binary_repr(),
+        }
+    }
+}