impl DEPEND parser

src/depend/mod.rs

@@ -0,0 +1,18 @@
+use crate::{atom::Atom, useflag::UseFlag};
+
+pub mod parsers;
+
+#[derive(Clone, Debug)]
+pub enum Conditional {
+    Negative(UseFlag),
+    Positive(UseFlag),
+}
+
+#[derive(Clone, Debug)]
+pub enum Expr {
+    Atom(Atom),
+    Conditional(Conditional),
+    AllOf(Vec<Expr>),
+    AnyOf(Vec<Expr>),
+    OneOf(Vec<Expr>),
+}