feat(core/permissions): initial commit

crates/core/permissions/src/models/mod.rs

@@ -0,0 +1,58 @@
+mod channel;
+mod server;
+mod user;
+
+pub use channel::*;
+pub use server::*;
+pub use user::*;
+
+/// Holds a permission value to manipulate.
+#[derive(Debug)]
+pub struct PermissionValue(u64);
+
+impl PermissionValue {
+    /// Apply a given override to this value
+    pub fn apply(&mut self, v: Override) {
+        self.allow(v.allow);
+        self.revoke(v.deny);
+    }
+
+    /// Allow given permissions
+    pub fn allow(&mut self, v: u64) {
+        self.0 |= v;
+    }
+
+    /// Revoke given permissions
+    pub fn revoke(&mut self, v: u64) {
+        self.0 &= !v;
+    }
+
+    /// Restrict to given permissions
+    pub fn restrict(&mut self, v: u64) {
+        self.0 &= v;
+    }
+}
+
+impl From<i64> for PermissionValue {
+    fn from(v: i64) -> Self {
+        Self(v as u64)
+    }
+}
+
+impl From<u64> for PermissionValue {
+    fn from(v: u64) -> Self {
+        Self(v)
+    }
+}
+
+impl From<PermissionValue> for u64 {
+    fn from(v: PermissionValue) -> Self {
+        v.0
+    }
+}
+
+impl From<ChannelPermission> for PermissionValue {
+    fn from(v: ChannelPermission) -> Self {
+        (v as u64).into()
+    }
+}