From e746b6d80654ba4e4e26370fe6e4f784ce841d92 Mon Sep 17 00:00:00 2001
From: Matt Mastracci <matthew@mastracci.com>
Date: Sat, 1 Jul 2023 18:00:14 -0600
Subject: refactor(core): Extract deno_core (#19658)

`deno_core` is moving out! You'll find it at
https://github.com/denoland/deno_core/ once this PR lands.
---
 core/examples/wasm.rs | 67 ---------------------------------------------------
 1 file changed, 67 deletions(-)
 delete mode 100644 core/examples/wasm.rs

(limited to 'core/examples/wasm.rs')

diff --git a/core/examples/wasm.rs b/core/examples/wasm.rs
deleted file mode 100644
index 5d5c5f6ff..000000000
--- a/core/examples/wasm.rs
+++ /dev/null
@@ -1,67 +0,0 @@
-// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
-
-use deno_core::op;
-use deno_core::Extension;
-use deno_core::JsRuntime;
-use deno_core::RuntimeOptions;
-use std::mem::transmute;
-use std::ptr::NonNull;
-
-// This is a hack to make the `#[op]` macro work with
-// deno_core examples.
-// You can remove this:
-
-use deno_core::*;
-
-struct WasmMemory(NonNull<v8::WasmMemoryObject>);
-
-fn wasm_memory_unchecked(state: &mut OpState) -> &mut [u8] {
-  let WasmMemory(global) = state.borrow::<WasmMemory>();
-  // SAFETY: `v8::Local` is always non-null pointer; the `HandleScope` is
-  // already on the stack, but we don't have access to it.
-  let memory_object = unsafe {
-    transmute::<NonNull<v8::WasmMemoryObject>, v8::Local<v8::WasmMemoryObject>>(
-      *global,
-    )
-  };
-  let backing_store = memory_object.buffer().get_backing_store();
-  let ptr = backing_store.data().unwrap().as_ptr() as *mut u8;
-  let len = backing_store.byte_length();
-  // SAFETY: `ptr` is a valid pointer to `len` bytes.
-  unsafe { std::slice::from_raw_parts_mut(ptr, len) }
-}
-
-#[op(wasm)]
-fn op_wasm(state: &mut OpState, memory: Option<&mut [u8]>) {
-  let memory = memory.unwrap_or_else(|| wasm_memory_unchecked(state));
-  memory[0] = 69;
-}
-
-#[op(v8)]
-fn op_set_wasm_mem(
-  scope: &mut v8::HandleScope,
-  state: &mut OpState,
-  memory: serde_v8::Value,
-) {
-  let memory =
-    v8::Local::<v8::WasmMemoryObject>::try_from(memory.v8_value).unwrap();
-  let global = v8::Global::new(scope, memory);
-  state.put(WasmMemory(global.into_raw()));
-}
-
-fn main() {
-  // Build a deno_core::Extension providing custom ops
-  let ext = Extension::builder("my_ext")
-    .ops(vec![op_wasm::decl(), op_set_wasm_mem::decl()])
-    .build();
-
-  // Initialize a runtime instance
-  let mut runtime = JsRuntime::new(RuntimeOptions {
-    extensions: vec![ext],
-    ..Default::default()
-  });
-
-  runtime
-    .execute_script("<usage>", include_ascii_string!("wasm.js"))
-    .unwrap();
-}
-- 
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