feat: initial lua api

.github/workflows/lua-test.yaml

@@ -0,0 +1,44 @@
+name: lua-test
+
+on:
+  push:
+    branches:
+      - main
+      - master
+    tags:
+      - '*'
+  pull_request:
+    branches:
+      - main
+    paths:
+      - "lua/**"
+      - ".github/workflows/lua-test.yaml"
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event_name }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+jobs:
+  build-and-test:
+    defaults:
+      run:
+        working-directory: "lua"
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Setup lua toolchain
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y lua-busted luarocks liblua5.2-dev
+    - name: Install Rust
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: 1.79
+        override: true
+        components: clippy, rustfmt
+    - name: Build
+      run: make

lua/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "kcl-lib-lua"
+version = "0.10.0-beta.1"
+edition = "2021"
+publish = false
+
+[features]
+default = ["mlua/lua52"]
+lua52 = ["mlua", "mlua/lua52"]
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+mlua = { version = "0.9", features = [
+  "module",
+  "macros",
+], default-features = false, optional = true }
+kclvm-api = { git = "https://github.com/kcl-lang/kcl", version = "0.10.0-beta.1" }

lua/Makefile

@@ -0,0 +1,18 @@
+.PHONY: all
+all: build
+
+.PHONY: build
+build:
+	cargo build -r
+
+.PHONY: fmt
+fmt:
+	cargo fmt
+
+.PHONY: check
+check:
+	cargo check
+
+.PHONY: clean
+clean:
+	cargo clean

lua/README.md

@@ -0,0 +1,29 @@
+# KCL Artifact Library for Lua
+
+This repo is under development, PRs welcome!
+
+## Build from Source
+
+**Prerequisites**
+
++ Lua
++ Cargo
+
+### Lua version
+
+You have to enable one of the features: lua54, lua53, lua52, lua51, luajit(52) or luau in `Cargo.toml`, according to the chosen Lua version. **Default Lua version is 5.2**.
+
+If you build on macos, you can set the environment to prevent link errors.
+
+```shell
+# Set cargo build target on macos
+export MACOSX_DEPLOYMENT_TARGET='10.13'
+```
+
+### Linux
+
+```shell
+make
+# copy to lua share library directory
+cp ./target/release/libkcl_lib_lua.so /usr/lib/lua/5.2/kcl_lib.so
+```

lua/kcl_lib-0.10.0-1.rockspec

@@ -0,0 +1,28 @@
+package = "kcl_lib"
+version = "0.10.0-1"
+
+source = {
+    url = "git+https://github.com/kcl-lang/kcl",
+}
+
+description = {
+    summary = "KCL Lua Bindings",
+    detailed = [[
+        KCL Lua Bindings
+    ]],
+    homepage = "https://kcl-lang.io/",
+    license = " Apache-2.0"
+}
+
+dependencies = {
+    "lua >= 5.1",
+    "luarocks-build-rust-mlua = 0.2.0",
+}
+
+build = {
+    type = "rust-mlua",
+    modules = {
+        ["kcl_lib"] = "kcl_lib_lua",
+    },
+    target_path = "target",
+}

lua/src/lib.rs

@@ -0,0 +1,35 @@
+extern crate kclvm_api;
+
+use mlua::prelude::*;
+
+/// Execute KCL file with arguments and return the JSON/YAML result.
+fn exec_program<'a>(lua: &'a Lua, args: LuaTable<'a>) -> LuaResult<LuaTable<'a>> {
+    let api = kclvm_api::API::default();
+    let work_dir: String = args.get("work_dir")?;
+    let k_filename_list: Vec<String> = args.get("k_filename_list")?;
+    let k_code_list: Vec<String> = args.get("k_code_list")?;
+
+    let result = match api.exec_program(&kclvm_api::ExecProgramArgs {
+        work_dir,
+        k_filename_list,
+        k_code_list,
+        ..Default::default()
+    }) {
+        Ok(r) => r,
+        Err(e) => return Err(LuaError::external(e)),
+    };
+
+    let t = lua.create_table()?;
+    t.set("json_result", lua.create_string(result.json_result)?)?;
+    t.set("yaml_result", lua.create_string(result.yaml_result)?)?;
+    t.set("log_message", lua.create_string(result.log_message)?)?;
+    t.set("err_message", lua.create_string(result.err_message)?)?;
+    Ok(t)
+}
+
+#[mlua::lua_module]
+fn kcl_lib(lua: &Lua) -> LuaResult<LuaTable> {
+    let module = lua.create_table()?;
+    module.set("exec_program", lua.create_function(exec_program)?)?;
+    Ok(module)
+}

lua/test/exec_test.lua

@@ -0,0 +1,11 @@
+local kcl_lib = require("kcl_lib")
+
+describe("kcl lua lib unit test", function()
+  describe("exec_program", function()
+    it("operator function in fs schema", function()
+      local result, err = kcl.exec_program({k_filename_list=["./test_data/schema.k"]})
+      assert.is_nil(err)
+      assert.are.equal(result.yaml_result, "app:\n  replicas: 2")
+    end)
+  end)
+end)

lua/test/test_data/schema.k

@@ -0,0 +1,6 @@
+schema AppConfig:
+    replicas: int
+
+app: AppConfig {
+    replicas: 2
+}

swift/README.md

@@ -4,13 +4,13 @@ This repo is under development, PRs welcome!
 
 ## Developing
 
-If you build on macos, you can set the environment to prevent link errors.
-
 **Prerequisites**
 
 + Swift 5.8+
 + Cargo
 
+If you build on macos, you can set the environment to prevent link errors.
+
 ```shell
 # Set cargo build target on macos
 export MACOSX_DEPLOYMENT_TARGET='10.13'