Simulator first commit

node_modules/lame/src/node_pointer.h

@@ -0,0 +1,55 @@
+
+/*
+ * Helper functions for treating node Buffer instances as C "pointers".
+ */
+
+#include "v8.h"
+#include "nan.h"
+#include "node_buffer.h"
+
+/*
+ * Called when the "pointer" is garbage collected.
+ */
+
+inline static void wrap_pointer_cb(char *data, void *hint) {
+  //fprintf(stderr, "wrap_pointer_cb\n");
+}
+
+/*
+ * Wraps "ptr" into a new SlowBuffer instance with size "length".
+ */
+
+inline static Nan::MaybeLocal<v8::Object> WrapPointer(void *ptr, size_t length) {
+  void *user_data = NULL;
+  return Nan::NewBuffer((char *)ptr, length, wrap_pointer_cb, user_data);
+}
+
+/*
+ * Wraps "ptr" into a new SlowBuffer instance with length 0.
+ */
+
+inline static Nan::MaybeLocal<v8::Object> WrapPointer(void *ptr) {
+  return WrapPointer((char *)ptr, 0);
+}
+
+/*
+ * Unwraps Buffer instance "buffer" to a C `char *` with the offset specified.
+ */
+
+inline static char * UnwrapPointer(v8::Handle<v8::Value> buffer, int64_t offset = 0) {
+  if (node::Buffer::HasInstance(buffer)) {
+    return node::Buffer::Data(buffer.As<v8::Object>()) + offset;
+  } else {
+    return NULL;
+  }
+}
+
+/**
+ * Templated version of UnwrapPointer that does a reinterpret_cast() on the
+ * pointer before returning it.
+ */
+
+template <typename Type>
+inline static Type UnwrapPointer(v8::Handle<v8::Value> buffer) {
+  return reinterpret_cast<Type>(UnwrapPointer(buffer));
+}