feat: ffi to replace plugins (#11152)

This commit removes implementation of "native plugins" and replaces
it with FFI API.

Effectively "Deno.openPlugin" API was replaced with "Deno.dlopen" API.

1 files changed, 30 insertions, 0 deletions

diff --git a/extensions/ffi/00_ffi.js b/extensions/ffi/00_ffi.js
new file mode 100644
index 000000000..3c4112a47
--- /dev/null
+++ b/extensions/ffi/00_ffi.js
@@ -0,0 +1,30 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
+"use strict";
+
+((window) => {
+  const core = window.Deno.core;
+
+  class DynamicLibrary {
+    #rid;
+    symbols = {};
+
+    constructor(path, symbols) {
+      this.#rid = core.opSync("op_ffi_load", { path, symbols });
+
+      for (const symbol in symbols) {
+        this.symbols[symbol] = (...parameters) =>
+          core.opSync("op_ffi_call", { rid: this.#rid, symbol, parameters });
+      }
+    }
+
+    close() {
+      core.close(this.#rid);
+    }
+  }
+
+  function dlopen(path, symbols) {
+    return new DynamicLibrary(path, symbols);
+  }
+
+  window.__bootstrap.ffi = { dlopen };
+})(this);