Implement PluginChain

src/plugin.rs

@@ -7,5 +7,28 @@ pub enum PluginResult {
 }
 
 pub trait Plugin {
-    fn transform(item: &VfsItem) -> PluginResult;
+    fn transform_file(&self, plugins: &PluginChain, vfs_item: &VfsItem) -> PluginResult;
+}
+
+pub struct PluginChain {
+    plugins: Vec<Box<Plugin + Send>>,
+}
+
+impl PluginChain {
+    pub fn new(plugins: Vec<Box<Plugin + Send>>) -> PluginChain {
+        PluginChain {
+            plugins,
+        }
+    }
+
+    pub fn transform_file(&self, vfs_item: &VfsItem) -> Option<RbxItem> {
+        for plugin in &self.plugins {
+            match plugin.transform_file(self, vfs_item) {
+                PluginResult::Value(rbx_item) => return rbx_item,
+                PluginResult::Pass => {},
+            }
+        }
+
+        None
+    }
 }