feat: add I64LEB128 (#12)

Co-authored-by: Elias Sjögreen <eliassjogreen1@gmail.com>

Author: MierenManz

.github/workflows/checks.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Setup latest deno version
         uses: denoland/setup-deno@main
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Setup latest deno version
         uses: denoland/setup-deno@main

benchmarks/string.ts

@@ -1,6 +1,6 @@
-import { FixedUTF8String } from "../types/string/mod.ts";
+import { FixedLengthString } from "../mod.ts";
 
-const stringThing = new FixedUTF8String(12);
+const stringThing = new FixedLengthString(12);
 
 const ab = new TextEncoder().encode("Hello World!").buffer;
 const dt = new DataView(ab);

benchmarks/struct.ts

@@ -1,5 +1,4 @@
-import { AlignedStruct } from "../types/struct/mod.ts";
-import { u32 } from "../types/primitive/mod.ts";
+import { AlignedStruct, u32 } from "../mod.ts";
 
 const data = new DataView(new ArrayBuffer(8));
 

benchmarks/tuple.ts

@@ -1,5 +1,4 @@
-import { Tuple } from "../types/tuple/mod.ts";
-import { u32 } from "../types/primitive/u32.ts";
+import { Tuple, u32 } from "../mod.ts";
 
 const benchTuple = new Tuple([u32, u32]);
 const u32arr = new Uint32Array([2, 4]);

deno.json

@@ -0,0 +1,10 @@
+{
+  "imports": {
+    "std/": "https://deno.land/std@0.184.0/",
+    "wabt": "npm:wabt@1.0.32"
+  },
+  "tasks": {
+    "build": "deno task build_i64leb128",
+    "build_i64leb128": "deno run --allow-read --allow-write ./scripts/build_i64leb128.ts"
+  }
+}

deno.lock

@@ -1 +1,2 @@
 export * from "./types/mod.ts";
+export * from "./utils.ts";

mod.ts

@@ -0,0 +1,43 @@
+import wabt from "wabt";
+
+const { parseWat } = await wabt();
+
+const source = "./types/leb128/_i64leb128.wat";
+const destination = "./types/leb128/_i64leb128.ts";
+
+const wat = await Deno.readTextFile(source);
+const module = parseWat(source, wat);
+const wasm = module.toBinary({}).buffer;
+const encoded = btoa(String.fromCharCode(...wasm));
+
+const content = `\
+// Copyright 2023 the Blocktopus authors. All rights reserved. MIT license.
+// Copyright 2023 the denosaurs team. All rights reserved. MIT license.
+
+const bytes = Uint8Array.from(
+  atob(
+    "${encoded}"
+  ),
+  (c) => c.charCodeAt(0)
+);
+const { instance } = await WebAssembly.instantiate(bytes);
+
+const exports = instance.exports as {
+  memory: WebAssembly.Memory;
+  read: (pointer: number) => [bigint, number];
+  write: (value: bigint) => number;
+};
+
+const memory = new Uint8Array(exports.memory.buffer);
+
+export function read(buffer: Uint8Array): [bigint, number] {
+  memory.set(buffer, 0);
+  return exports.read(0);
+}
+
+export function write(value: bigint): Uint8Array {
+  return memory.subarray(0, exports.write(value));
+}
+`;
+
+await Deno.writeTextFile(destination, content);

scripts/build_i64leb128.ts

@@ -1,3 +1,3 @@
 export * from "./array.ts";
-export * from "./arrayBuffer.ts";
-export * from "./typedArray.ts";
+export * from "./array_buffer.ts";
+export * from "./typed_array.ts";