Basic Lua data structures

src/lib.rs

@@ -0,0 +1,47 @@
+use std::{cell::RefCell, collections::HashMap, hash::Hash, rc::Rc};
+
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+pub enum ValueInner {
+	Number(i64),
+	String(String),
+	Table(Table),
+}
+
+pub type Value = Option<ValueInner>;
+
+#[derive(Debug, Clone, Default)]
+struct TableInner {
+	content: HashMap<ValueInner, ValueInner>,
+}
+
+#[derive(Debug, Clone, Default)]
+pub struct Table(Rc<RefCell<TableInner>>);
+
+impl PartialEq for Table {
+	fn eq(&self, other: &Self) -> bool {
+		std::ptr::eq(self.0.as_ptr(), other.0.as_ptr())
+	}
+}
+
+impl Eq for Table {}
+
+impl Hash for Table {
+	fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
+		std::ptr::hash(self.0.as_ptr(), state)
+	}
+}
+
+impl Table {
+	pub fn get(&self, key: ValueInner) -> Value {
+		self.0.borrow().content.get(&key).cloned()
+	}
+
+	pub fn set(&self, key: ValueInner, value: Value) {
+		let mut this = self.0.borrow_mut();
+		if let Some(value) = value {
+			this.content.insert(key, value);
+		} else {
+			this.content.remove(&key);
+		}
+	}
+}