Add WasmMemoryObject::buffer method (denoland#1128)

src/binding.cc

@@ -2771,6 +2771,11 @@ void v8__WasmStreaming__SetUrl(WasmStreamingSharedPtr* self, const char* url,
  self->inner->SetUrl(url, len);
 }
 
+const v8::ArrayBuffer* v8__WasmMemoryObject__Buffer(
+ const v8::WasmMemoryObject& self) {
+ return local_to_ptr(ptr_to_local(&self)->Buffer());
+}
+
 using HeapSnapshotCallback = bool (*)(void*, const char*, size_t);
 
 void v8__HeapProfiler__TakeHeapSnapshot(v8::Isolate* isolate,

src/wasm.rs

@@ -7,9 +7,11 @@ use crate::scope::HandleScope;
 use crate::support::char;
 use crate::support::Opaque;
 use crate::support::UnitType;
+use crate::ArrayBuffer;
 use crate::Isolate;
 use crate::Local;
 use crate::Value;
+use crate::WasmMemoryObject;
 use crate::WasmModuleObject;
 use std::ptr::null;
 use std::ptr::null_mut;
@@ -173,6 +175,14 @@ impl Drop for CompiledWasmModule {
  }
 }
 
+impl WasmMemoryObject {
+ /// Returns underlying ArrayBuffer.
+ #[inline(always)]
+ pub fn buffer(&self) -> Local<ArrayBuffer> {
+ unsafe { Local::from_raw(v8__WasmMemoryObject__Buffer(self)) }.unwrap()
+ }
+}
+
 pub(crate) fn trampoline<F>() -> extern "C" fn(*const FunctionCallbackInfo)
 where
  F: UnitType + Fn(&mut HandleScope, Local<Value>, WasmStreaming),
@@ -241,4 +251,8 @@ extern "C" {
  length: *mut usize,
  ) -> *const char;
  fn v8__CompiledWasmModule__DELETE(this: *mut InternalCompiledWasmModule);
+
+ fn v8__WasmMemoryObject__Buffer(
+ this: *const WasmMemoryObject,
+ ) -> *mut ArrayBuffer;
 }