From 7c3b9b4f4f2f4ec8fdeb0e77bb853fd22ffaa476 Mon Sep 17 00:00:00 2001
From: Andy Finch <andyfinch7@gmail.com>
Date: Thu, 5 Dec 2019 15:30:20 -0500
Subject: feat: first pass at native plugins (#3372)

---
 core/lib.rs     |  2 ++
 core/ops.rs     |  2 +-
 core/plugins.rs | 22 ++++++++++++++++++++++
 3 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 core/plugins.rs

(limited to 'core')

diff --git a/core/lib.rs b/core/lib.rs
index 31f717769..f1becb5d7 100644
--- a/core/lib.rs
+++ b/core/lib.rs
@@ -14,6 +14,7 @@ mod libdeno;
 mod module_specifier;
 mod modules;
 mod ops;
+mod plugins;
 mod resources;
 mod shared_queue;
 
@@ -27,6 +28,7 @@ pub use crate::libdeno::PinnedBuf;
 pub use crate::module_specifier::*;
 pub use crate::modules::*;
 pub use crate::ops::*;
+pub use crate::plugins::*;
 pub use crate::resources::*;
 
 pub fn v8_version() -> &'static str {
diff --git a/core/ops.rs b/core/ops.rs
index 6dc0a7323..c840ed979 100644
--- a/core/ops.rs
+++ b/core/ops.rs
@@ -27,7 +27,7 @@ pub type CoreError = ();
 pub type CoreOp = Op<CoreError>;
 
 /// Main type describing op
-type OpDispatcher =
+pub type OpDispatcher =
   dyn Fn(&[u8], Option<PinnedBuf>) -> CoreOp + Send + Sync + 'static;
 
 #[derive(Default)]
diff --git a/core/plugins.rs b/core/plugins.rs
new file mode 100644
index 000000000..50271d53a
--- /dev/null
+++ b/core/plugins.rs
@@ -0,0 +1,22 @@
+use crate::libdeno::PinnedBuf;
+use crate::ops::CoreOp;
+
+pub type PluginInitFn = fn(context: &mut dyn PluginInitContext);
+
+pub trait PluginInitContext {
+  fn register_op(
+    &mut self,
+    name: &str,
+    op: Box<dyn Fn(&[u8], Option<PinnedBuf>) -> CoreOp + Send + Sync + 'static>,
+  );
+}
+
+#[macro_export]
+macro_rules! init_fn {
+  ($fn:path) => {
+    #[no_mangle]
+    pub fn deno_plugin_init(context: &mut dyn PluginInitContext) {
+      $fn(context)
+    }
+  };
+}
-- 
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