bindings: adding process.binding('builtins') method

node.gyp

@@ -109,6 +109,7 @@
         'src/js_stream.cc',
         'src/node.cc',
         'src/node_buffer.cc',
+        'src/node_builtins.cc',
         'src/node_constants.cc',
         'src/node_contextify.cc',
         'src/node_file.cc',
@@ -146,6 +147,7 @@
         'src/js_stream.h',
         'src/node.h',
         'src/node_buffer.h',
+        'src/node_builtins.h',
         'src/node_constants.h',
         'src/node_file.h',
         'src/node_http_parser.h',

src/node.cc

@@ -1,5 +1,6 @@
 #include "node.h"
 #include "node_buffer.h"
+#include "node_builtins.h"
 #include "node_constants.h"
 #include "node_file.h"
 #include "node_http_parser.h"
@@ -2281,6 +2282,10 @@ static void Binding(const FunctionCallbackInfo<Value>& args) {
     exports = Object::New(env->isolate());
     DefineJavaScript(env, exports);
     cache->Set(module, exports);
+  } else if (!strcmp(*module_v, "builtins")) {
+    exports = Object::New(env->isolate());
+    DefineBuiltins(env, exports, modlist_builtin);
+    cache->Set(module, exports);
   } else {
     char errmsg[1024];
     snprintf(errmsg,

src/node_builtins.cc

@@ -0,0 +1,31 @@
+#include "node.h"
+#include "v8.h"
+#include "env.h"
+#include "env-inl.h"
+
+namespace node {
+
+using v8::Array;
+using v8::Handle;
+using v8::HandleScope;
+using v8::Integer;
+using v8::Local;
+using v8::Object;
+using v8::String;
+
+void DefineBuiltins(Environment* env,
+                    Handle<Object> target,
+                    node_module* builtins) {
+  HandleScope scope(env->isolate());
+  struct node_module* mp;
+  int i = 0;
+  Local<Array> bindings = Array::New(env->isolate(), 0);
+
+  for (mp = builtins; mp != nullptr; mp = mp->nm_link) {
+    Local<String> name = String::NewFromUtf8(env->isolate(), mp->nm_modname);
+    bindings->Set(i++, name);
+  }
+  target->Set(String::NewFromUtf8(env->isolate(), "bindings"), bindings);
+}
+
+}  // namespace node

src/node_builtins.h

@@ -0,0 +1,15 @@
+#ifndef SRC_NODE_BUILTINS_H_
+#define SRC_NODE_BUILTINS_H_
+
+#include "v8.h"
+#include "env.h"
+
+namespace node {
+
+void DefineBuiltins(Environment* env,
+                    v8::Handle<v8::Object> target,
+                    node_module* builtins);
+
+}  // namespace node
+
+#endif  // SRC_NODE_BUILTINS_H_