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add example crates

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bytedream 2024-09-29 18:23:50 +02:00
parent da63980914
commit f116e435ec
15 changed files with 782 additions and 3 deletions
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2
.gitignore vendored
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@ -3,4 +3,4 @@
book
lua-playground/target
/target/

5
example-binary/.cargo/config.toml Normal file
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@ -0,0 +1,5 @@
[build]
target = "wasm32-unknown-emscripten"
[target.wasm32-unknown-emscripten]
runner = "node --experimental-default-type=module"

336
example-binary/Cargo.lock generated Normal file
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@ -0,0 +1,336 @@
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 3
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7
example-binary/Cargo.toml Normal file
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@ -0,0 +1,7 @@
[package]
name = "example-binary"
version = "0.1.0"
edition = "2021"
[dependencies]
mlua = { version = ">=0.9.3", features = ["lua51", "vendored"] }

4
example-binary/build.rs Normal file
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@ -0,0 +1,4 @@
fn main() {
println!("cargo:rustc-link-arg=-sEXPORTED_RUNTIME_METHODS=['cwrap','ccall']");
println!("cargo:rustc-link-arg=-sEXPORT_ES6=1");
}

11
example-binary/nodejs.js Normal file
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@ -0,0 +1,11 @@
async function main() {
const wasm = await import('./target/wasm32-unknown-emscripten/debug/example-binary.js');
const module = {
print: (str) => console.log(str),
printErr: (str) => console.error(str),
}
await wasm.default(module);
}
main();

5
example-binary/src/main.rs Normal file
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@ -0,0 +1,5 @@
fn main() {
let lua = mlua::Lua::new();
lua.load(r#"print("Hello from WebAssembly Lua!")"#).exec().unwrap();
}

5
example-library/.cargo/config.toml Normal file
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@ -0,0 +1,5 @@
[build]
target = "wasm32-unknown-emscripten"
[target.wasm32-unknown-emscripten]
runner = "node --experimental-default-type=module"

336
example-library/Cargo.lock generated Normal file
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@ -0,0 +1,336 @@
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10
example-library/Cargo.toml Normal file
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@ -0,0 +1,10 @@
[package]
name = "example-library"
version = "0.1.0"
edition = "2021"
[lib]
crate-type = ["cdylib"]
[dependencies]
mlua = { version = ">=0.9.3", features = ["lua51", "vendored"] }

23
example-library/build.rs Normal file
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@ -0,0 +1,23 @@
use std::env;
use std::path::PathBuf;
fn main() {
let book_output_path = env::var("BOOK_OUTPUT_PATH").map_or(None, Some);
let out_dir = env::var("OUT_DIR").unwrap();
let pkg_name = env::var("CARGO_PKG_NAME").unwrap();
let target_path = PathBuf::from(out_dir)
.parent()
.unwrap()
.parent()
.unwrap()
.parent()
.unwrap()
.to_path_buf();
println!("cargo:rustc-link-arg=-sEXPORTED_RUNTIME_METHODS=['cwrap','ccall']");
println!("cargo:rustc-link-arg=-sEXPORT_ES6=1");
println!("cargo:rustc-link-arg=-sERROR_ON_UNDEFINED_SYMBOLS=0");
println!("cargo:rustc-link-arg=--no-entry");
println!("cargo:rustc-link-arg=-o{}.js", book_output_path.map(PathBuf::from).unwrap_or(target_path).join(pkg_name).to_string_lossy());
}

15
example-library/nodejs.js Normal file
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@ -0,0 +1,15 @@
async function main() {
const wasm = await import('./target/wasm32-unknown-emscripten/debug/example-library.js');
const module = {
print: (str) => console.log(str),
printErr: (str) => console.error(str),
}
const exampleLibrary = await wasm.default(module);
const luaInstance = exampleLibrary.ccall('lua_new', 'number', [], []);
const luaExecute = exampleLibrary.cwrap('lua_execute', null, ['number', 'string']);
luaExecute(luaInstance, 'print("Hello from WebAssembly Lua!")');
}
main();

18
example-library/src/lib.rs Normal file
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@ -0,0 +1,18 @@
use std::ffi::{c_char, CStr};
use mlua::Lua;
#[no_mangle]
pub extern "C" fn lua_new() -> *mut Lua {
let lua = Lua::new();
Box::into_raw(Box::new(lua))
}
#[no_mangle]
pub unsafe extern "C" fn lua_execute(lua: *mut Lua, to_execute: *const c_char) {
let lua: &mut Lua = &mut *lua;
let to_execute = CStr::from_ptr(to_execute);
if let Err(err) = lua.load(&to_execute.to_string_lossy().to_string()).exec() {
eprintln!("{}", err)
}
}

3
src/SUMMARY.md
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@ -3,11 +3,10 @@
[Introduction](./introduction.md)
- [Setup](./setup.md)
- [Tutorial](tutorial/introduction.md)
- [Creating a project](tutorial/creating-a-project.md)
- [Adding wasm logic](tutorial/adding-wasm-logic.md)
- [Compiling](tutorial/compiling.md)
- [Calling from Javascript](tutorial/calling-from-javascript.md)
- [Testing](./testing.md)
- [Examples](./examples.md)

5
src/examples.md Normal file
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@ -0,0 +1,5 @@
There are two example crates, a binary and a library one:
- [Example Binary Crate](https://github.com/bytedream/litbwraw/tree/main/example-binary)
- [Example Library Crate](https://github.com/bytedream/litbwraw/tree/main/example-library)
Each directory has a `nodejs.js` file that can be executed with nodejs and runs the compiled code.