Move package:wasm to a subdirectory (#50)

* Move package:wasm to a sub directory

* Add a README to the top level directory

* Update github workflows to run in sub directory

* Move working dir to defaults

.github/workflows/test-package.yml

@@ -18,6 +18,9 @@ jobs:
     strategy:
       matrix:
         sdk: [ dev ]
+    defaults:
+      run:
+        working-directory: wasm
     steps:
     - uses: actions/checkout@v2.3.4
     - uses: dart-lang/setup-dart@v1.0
@@ -58,6 +61,9 @@ jobs:
       matrix:
         os: [ ubuntu-latest, macos-latest ]
         sdk: [ 2.12.0, dev ]
+    defaults:
+      run:
+        working-directory: wasm
     steps:
     - uses: dart-lang/setup-dart@v1.0
       with:

README.md

@@ -1,67 +1,9 @@
-Provides utilities for loading and running WASM modules.
+These packages provide utilities for loading and running WASM modules.
 
-Built on top of the [Wasmer](https://github.com/wasmerio/wasmer) runtime.
+## [wasm](https://github.com/dart-lang/wasm/blob/main/wasm/README.md)
 
-Flutter and web are **not supported** at the moment. Stay tuned though ;)
+Runs WASM modules in Dart native.
 
-## Setup
+## flutter_wasm (coming soon)
 
-Start by installing the tools needed to build the Wasmer runtime:
-
-   * Install the [Rust SDK].
-
-   * On Windows, to get `link.exe`, install the [Visual Studio build tools]
-     with the "Desktop development with C++"-option selected.
-
-[Rust SDK]: https://www.rust-lang.org/tools/install
-[Visual Studio build tools]: https://visualstudio.microsoft.com/visual-cpp-build-tools/
-
-## Basic Usage
-
-As a simple example, we'll try to call a simple C function from Dart using
-`package:wasm`. For a more detailed example that uses WASI, check out the
-example directory.
-
-1. First create new Dart app folder: `dart create wasmtest`
-
-1. Add a dependency to package `wasm` in `pubspec.yaml` and run `dart pub get`
-
-1. Next run `dart run wasm:setup` to build the Wasmer runtime. This will take a few minutes.
-
-1. Then add a new file `square.cc` with the following contents:
-
-    ```c++
-    extern "C" int square(int n) { return n * n; }
-    ```
-
-1. We can compile this C++ code to WASM using a recent version of the
-[clang compiler](https://clang.llvm.org/get_started.html):
-
-    ```bash
-    clang --target=wasm32 -nostdlib "-Wl,--export-all" "-Wl,--no-entry" -o square.wasm square.cc
-    ```
-
-1. Replace the contents of your Dart program (`bin/wasmtest.dart`) with:
-
-    ```dart
-    import 'dart:io';
-    import 'package:wasm/wasm.dart';
-
-    void main() {
-      final data = File('square.wasm').readAsBytesSync();
-      final mod = WasmModule(data);
-      print(mod.describe());
-      final inst = mod.builder().build();
-      final square = inst.lookupFunction('square');
-      print(square(12));
-    }
-    ```
-
-1. Run the Dart program: `dart run`. This should print:
-
-    ```
-    export memory: memory
-    export function: int32 square(int32)
-    
-    144
-    ```
+Runs WASM modules in Flutter.

wasm/README.md

@@ -0,0 +1,67 @@
+Provides utilities for loading and running WASM modules.
+
+Built on top of the [Wasmer](https://github.com/wasmerio/wasmer) runtime.
+
+Flutter and web are **not supported** at the moment. Stay tuned though ;)
+
+## Setup
+
+Start by installing the tools needed to build the Wasmer runtime:
+
+   * Install the [Rust SDK].
+
+   * On Windows, to get `link.exe`, install the [Visual Studio build tools]
+     with the "Desktop development with C++"-option selected.
+
+[Rust SDK]: https://www.rust-lang.org/tools/install
+[Visual Studio build tools]: https://visualstudio.microsoft.com/visual-cpp-build-tools/
+
+## Basic Usage
+
+As a simple example, we'll try to call a simple C function from Dart using
+`package:wasm`. For a more detailed example that uses WASI, check out the
+example directory.
+
+1. First create new Dart app folder: `dart create wasmtest`
+
+1. Add a dependency to package `wasm` in `pubspec.yaml` and run `dart pub get`
+
+1. Next run `dart run wasm:setup` to build the Wasmer runtime. This will take a few minutes.
+
+1. Then add a new file `square.cc` with the following contents:
+
+    ```c++
+    extern "C" int square(int n) { return n * n; }
+    ```
+
+1. We can compile this C++ code to WASM using a recent version of the
+[clang compiler](https://clang.llvm.org/get_started.html):
+
+    ```bash
+    clang --target=wasm32 -nostdlib "-Wl,--export-all" "-Wl,--no-entry" -o square.wasm square.cc
+    ```
+
+1. Replace the contents of your Dart program (`bin/wasmtest.dart`) with:
+
+    ```dart
+    import 'dart:io';
+    import 'package:wasm/wasm.dart';
+
+    void main() {
+      final data = File('square.wasm').readAsBytesSync();
+      final mod = WasmModule(data);
+      print(mod.describe());
+      final inst = mod.builder().build();
+      final square = inst.lookupFunction('square');
+      print(square(12));
+    }
+    ```
+
+1. Run the Dart program: `dart run`. This should print:
+
+    ```
+    export memory: memory
+    export function: int32 square(int32)
+    
+    144
+    ```