Add nosnapshot executables for faster incremental builds (#359)

Fixes #311.

1 files changed, 51 insertions, 0 deletions

diff --git a/src/from_filesystem.cc b/src/from_filesystem.cc
new file mode 100644
index 000000000..b8854c6ff
--- /dev/null
+++ b/src/from_filesystem.cc
@@ -0,0 +1,51 @@
+// Copyright 2018 Ryan Dahl <ry@tinyclouds.org>
+// All rights reserved. MIT License.
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <string>
+
+#include "third_party/v8/include/v8.h"
+#include "third_party/v8/src/base/logging.h"
+
+#include "deno.h"
+#include "file_util.h"
+#include "internal.h"
+
+namespace deno {
+
+Deno* NewFromFileSystem(void* data, deno_recv_cb cb) {
+  printf("Reading javascript runtime bundle from " BUNDLE_LOCATION "\n");
+
+  std::string js_source;
+  CHECK(deno::ReadFileToString(BUNDLE_LOCATION, &js_source));
+
+  Deno* d = new Deno;
+  d->currentArgs = nullptr;
+  d->cb = cb;
+  d->data = data;
+  v8::Isolate::CreateParams params;
+  params.array_buffer_allocator =
+      v8::ArrayBuffer::Allocator::NewDefaultAllocator();
+  v8::Isolate* isolate = v8::Isolate::New(params);
+  AddIsolate(d, isolate);
+
+  v8::Locker locker(isolate);
+  v8::Isolate::Scope isolate_scope(isolate);
+  {
+    v8::HandleScope handle_scope(isolate);
+    auto context = v8::Context::New(isolate);
+    InitializeContext(isolate, context, BUNDLE_LOCATION, js_source.c_str());
+    d->context.Reset(d->isolate, context);
+  }
+
+  return d;
+}
+
+}  // namespace deno
+
+extern "C" {
+Deno* deno_new(void* data, deno_recv_cb cb) {
+  return deno::NewFromFileSystem(data, cb);
+}
+}