[Modding] start add wasm integration (#84)

* start add wasm integration

* some test

* some improvement

* try more language

* expend try with python

* update

* half working python

* improve and extend test

* get py2wasm work but not so well

* convert to use in cpp

* start prepare multimodule

* improve a little by using cpp (but still not great)

* Update wasm.cpp

* try ocaml

* add a working example of python with a not complete function

* remove type to be even more curse

* start add a proper mod loader

* allow mod to communicate between

* example of hook

---------

Co-authored-by: MegaMech <MegaMech@users.noreply.github.com>

11 files changed, 451 insertions, 0 deletions

diff --git a/mods/python-rust/.github/dependabot.yml b/mods/python-rust/.github/dependabot.yml
new file mode 100644
index 000000000..7377d3759
--- /dev/null
+++ b/mods/python-rust/.github/dependabot.yml
@@ -0,0 +1,8 @@
+version: 2
+updates:
+- package-ecosystem: cargo
+  directory: "/"
+  schedule:
+    interval: daily
+    time: "08:00"
+  open-pull-requests-limit: 10
diff --git a/mods/python-rust/.gitignore b/mods/python-rust/.gitignore
new file mode 100644
index 000000000..4e301317e
--- /dev/null
+++ b/mods/python-rust/.gitignore
@@ -0,0 +1,6 @@
+/target
+**/*.rs.bk
+Cargo.lock
+bin/
+pkg/
+wasm-pack.log
diff --git a/mods/python-rust/.travis.yml b/mods/python-rust/.travis.yml
new file mode 100644
index 000000000..7a913256e
--- /dev/null
+++ b/mods/python-rust/.travis.yml
@@ -0,0 +1,69 @@
+language: rust
+sudo: false
+
+cache: cargo
+
+matrix:
+  include:
+
+  # Builds with wasm-pack.
+  - rust: beta
+    env: RUST_BACKTRACE=1
+    addons:
+      firefox: latest
+      chrome: stable
+    before_script:
+      - (test -x $HOME/.cargo/bin/cargo-install-update || cargo install cargo-update)
+      - (test -x $HOME/.cargo/bin/cargo-generate || cargo install --vers "^0.2" cargo-generate)
+      - cargo install-update -a
+      - curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh -s -- -f
+    script:
+      - cargo generate --git . --name testing
+      # Having a broken Cargo.toml (in that it has curlies in fields) anywhere
+      # in any of our parent dirs is problematic.
+      - mv Cargo.toml Cargo.toml.tmpl
+      - cd testing
+      - wasm-pack build
+      - wasm-pack test --chrome --firefox --headless
+
+  # Builds on nightly.
+  - rust: nightly
+    env: RUST_BACKTRACE=1
+    before_script:
+      - (test -x $HOME/.cargo/bin/cargo-install-update || cargo install cargo-update)
+      - (test -x $HOME/.cargo/bin/cargo-generate || cargo install --vers "^0.2" cargo-generate)
+      - cargo install-update -a
+      - rustup target add wasm32-unknown-unknown
+    script:
+      - cargo generate --git . --name testing
+      - mv Cargo.toml Cargo.toml.tmpl
+      - cd testing
+      - cargo check
+      - cargo check --target wasm32-unknown-unknown
+      - cargo check                                 --no-default-features
+      - cargo check --target wasm32-unknown-unknown --no-default-features
+      - cargo check                                 --no-default-features --features console_error_panic_hook
+      - cargo check --target wasm32-unknown-unknown --no-default-features --features console_error_panic_hook
+      - cargo check                                 --no-default-features --features "console_error_panic_hook wee_alloc"
+      - cargo check --target wasm32-unknown-unknown --no-default-features --features "console_error_panic_hook wee_alloc"
+
+  # Builds on beta.
+  - rust: beta
+    env: RUST_BACKTRACE=1
+    before_script:
+      - (test -x $HOME/.cargo/bin/cargo-install-update || cargo install cargo-update)
+      - (test -x $HOME/.cargo/bin/cargo-generate || cargo install --vers "^0.2" cargo-generate)
+      - cargo install-update -a
+      - rustup target add wasm32-unknown-unknown
+    script:
+      - cargo generate --git . --name testing
+      - mv Cargo.toml Cargo.toml.tmpl
+      - cd testing
+      - cargo check
+      - cargo check --target wasm32-unknown-unknown
+      - cargo check                                 --no-default-features
+      - cargo check --target wasm32-unknown-unknown --no-default-features
+      - cargo check                                 --no-default-features --features console_error_panic_hook
+      - cargo check --target wasm32-unknown-unknown --no-default-features --features console_error_panic_hook
+      # Note: no enabling the `wee_alloc` feature here because it requires
+      # nightly for now.
diff --git a/mods/python-rust/Cargo.toml b/mods/python-rust/Cargo.toml
new file mode 100644
index 000000000..3a0130357
--- /dev/null
+++ b/mods/python-rust/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "python"
+version = "0.1.0"
+authors = ["coco875 <pereira.jannin@gmail.com>"]
+edition = "2018"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+rustpython = { git = "https://github.com/RustPython/RustPython", version = "0.4.0" }
+wasi = "0.11"
diff --git a/mods/python-rust/LICENSE_APACHE b/mods/python-rust/LICENSE_APACHE
new file mode 100644
index 000000000..11069edd7
--- /dev/null
+++ b/mods/python-rust/LICENSE_APACHE
@@ -0,0 +1,201 @@
+                              Apache License
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+   Contributor provides its Contributions) on an "AS IS" BASIS,
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+you may not use this file except in compliance with the License.
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diff --git a/mods/python-rust/LICENSE_MIT b/mods/python-rust/LICENSE_MIT
new file mode 100644
index 000000000..65b657639
--- /dev/null
+++ b/mods/python-rust/LICENSE_MIT
@@ -0,0 +1,25 @@
+Copyright (c) 2018 coco875 <pereira.jannin@gmail.com>
+
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/mods/python-rust/README.md b/mods/python-rust/README.md
new file mode 100644
index 000000000..6b6840850
--- /dev/null
+++ b/mods/python-rust/README.md
@@ -0,0 +1,84 @@
+<div align="center">
+
+  <h1><code>wasm-pack-template</code></h1>
+
+  <strong>A template for kick starting a Rust and WebAssembly project using <a href="https://github.com/rustwasm/wasm-pack">wasm-pack</a>.</strong>
+
+  <p>
+    <a href="https://travis-ci.org/rustwasm/wasm-pack-template"><img src="https://img.shields.io/travis/rustwasm/wasm-pack-template.svg?style=flat-square" alt="Build Status" /></a>
+  </p>
+
+  <h3>
+    <a href="https://rustwasm.github.io/docs/wasm-pack/tutorials/npm-browser-packages/index.html">Tutorial</a>
+    <span> | </span>
+    <a href="https://discordapp.com/channels/442252698964721669/443151097398296587">Chat</a>
+  </h3>
+
+  <sub>Built with 🦀🕸 by <a href="https://rustwasm.github.io/">The Rust and WebAssembly Working Group</a></sub>
+</div>
+
+## About
+
+[**📚 Read this template tutorial! 📚**][template-docs]
+
+This template is designed for compiling Rust libraries into WebAssembly and
+publishing the resulting package to NPM.
+
+Be sure to check out [other `wasm-pack` tutorials online][tutorials] for other
+templates and usages of `wasm-pack`.
+
+[tutorials]: https://rustwasm.github.io/docs/wasm-pack/tutorials/index.html
+[template-docs]: https://rustwasm.github.io/docs/wasm-pack/tutorials/npm-browser-packages/index.html
+
+## 🚴 Usage
+
+### 🐑 Use `cargo generate` to Clone this Template
+
+[Learn more about `cargo generate` here.](https://github.com/ashleygwilliams/cargo-generate)
+
+```
+cargo generate --git https://github.com/rustwasm/wasm-pack-template.git --name my-project
+cd my-project
+```
+
+### 🛠️ Build with `wasm-pack build`
+
+```
+wasm-pack build
+```
+
+### 🔬 Test in Headless Browsers with `wasm-pack test`
+
+```
+wasm-pack test --headless --firefox
+```
+
+### 🎁 Publish to NPM with `wasm-pack publish`
+
+```
+wasm-pack publish
+```
+
+## 🔋 Batteries Included
+
+* [`wasm-bindgen`](https://github.com/rustwasm/wasm-bindgen) for communicating
+  between WebAssembly and JavaScript.
+* [`console_error_panic_hook`](https://github.com/rustwasm/console_error_panic_hook)
+  for logging panic messages to the developer console.
+* `LICENSE-APACHE` and `LICENSE-MIT`: most Rust projects are licensed this way, so these are included for you
+
+## License
+
+Licensed under either of
+
+* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+* MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+
+at your option.
+
+### Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally
+submitted for inclusion in the work by you, as defined in the Apache-2.0
+license, shall be dual licensed as above, without any additional terms or
+conditions.
diff --git a/mods/python-rust/compile.sh b/mods/python-rust/compile.sh
new file mode 100755
index 000000000..5c9a66906
--- /dev/null
+++ b/mods/python-rust/compile.sh
@@ -0,0 +1,3 @@
+cargo build --target wasm32-wasip1 --lib --release
+rm ../../build/test.wasm
+cp target/wasm32-wasip1/release/rust.wasm ../../build/test.wasm
\ No newline at end of file
diff --git a/mods/python-rust/setup.sh b/mods/python-rust/setup.sh
new file mode 100644
index 000000000..09f9de6c3
--- /dev/null
+++ b/mods/python-rust/setup.sh
@@ -0,0 +1 @@
+rustup target add wasm32-wasip1
diff --git a/mods/python-rust/src/lib.rs b/mods/python-rust/src/lib.rs
new file mode 100644
index 000000000..c056c172f
--- /dev/null
+++ b/mods/python-rust/src/lib.rs
@@ -0,0 +1,29 @@
+use std::env;
+
+use rustpython::vm;
+
+fn main() {
+    let mut setting: vm::Settings = Default::default();
+    setting.path_list.push("".to_string());
+    let inter = vm::Interpreter::without_stdlib(setting);
+    let ret: vm::PyResult<()> = inter.enter(|vm| {
+        let scope = vm.new_scope_with_builtins();
+        let source = r#"print("Hello World from python!")"#;
+        let code_obj = vm
+            .compile(source, vm::compiler::Mode::Exec, "<embedded>".to_owned())
+            .map_err(|err| vm.new_syntax_error(&err, Some(source)))?;
+
+        vm.unwrap_pyresult(vm.run_code_obj(code_obj, scope));
+
+        Ok(())
+    });
+}
+
+#[no_mangle]
+pub fn fib(n: u32) -> u32 {
+    if n <= 1 {
+        main();
+        return n;
+    }
+    return fib(n - 1) + fib(n - 2);
+}
diff --git a/mods/python-rust/tests/web.rs b/mods/python-rust/tests/web.rs
new file mode 100644
index 000000000..de5c1dafe
--- /dev/null
+++ b/mods/python-rust/tests/web.rs
@@ -0,0 +1,13 @@
+//! Test suite for the Web and headless browsers.
+
+#![cfg(target_arch = "wasm32")]
+
+extern crate wasm_bindgen_test;
+use wasm_bindgen_test::*;
+
+wasm_bindgen_test_configure!(run_in_browser);
+
+#[wasm_bindgen_test]
+fn pass() {
+    assert_eq!(1 + 1, 2);
+}