feat: kcl runtime error message impl and add more unit tests

.github/workflows/wasm-test.yaml

@@ -32,13 +32,32 @@ jobs:
         uses: actions/setup-node@v3
         with:
           node-version: 20.x
+      - name: Install rust nightly toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: 1.79
+          override: true
+          components: clippy, rustfmt
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.22
 
       - name: Install dependencies
         run: npm install
 
       - name: Build
         run: npm run build
 
+      - name: Test
+        run: npm run test
+
+      - name: Rust example e2e tests
+        run: cd examples/rust && cargo test -r
+
+      - name: Go example e2e tests
+        run: cd examples/go && go mod tidy && go run main.go
+
       - name: Publish Dry Run
         if: "startsWith(github.ref, 'refs/tags/') && contains(github.ref, '-')"
         # Since this command will not exit with non-zero code when file missing,

wasm/examples/browser/src/main.ts

@@ -1,7 +1,8 @@
-import { load, invokeKCLRun } from "@kcl-lang/wasm-lib";
+import { load, invokeKCLRun, invokeKCLFmt } from "@kcl-lang/wasm-lib";
+
+const inst = await load();
 
 async function main() {
-  const inst = await load();
   const result = invokeKCLRun(inst, {
     filename: "test.k",
     source: `
@@ -11,6 +12,14 @@ schema Person:
 p = Person {name = "Alice"}`,
   });
   console.log(result);
+  const fmtResult = invokeKCLFmt(inst, {
+    source: `
+schema Person:
+  name: str
+
+p = Person {name = "Alice"}`,
+  });
+  console.log(fmtResult);
 }
 
 main();

wasm/examples/browser/tsconfig.json

@@ -1,9 +1,9 @@
 {
   "compilerOptions": {
     "target": "es2022",
-    "module": "commonjs",
-    "moduleResolution": "node",
+    "module": "es2022",
     "lib": ["es2022", "dom"],
+    "moduleResolution": "node",
     "sourceMap": true,
     "outDir": "./dist",
     "rootDir": "./src",

wasm/examples/go/main.go

@@ -19,4 +19,11 @@ func main() {
 		panic(err)
 	}
 	fmt.Println(result)
+	result, err = m.Fmt(&module.FmtOptions{
+		Source: "a = 1",
+	})
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println(result)
 }

wasm/examples/go/pkg/module/module.go

@@ -14,13 +14,18 @@ type RunOptions struct {
 	Source   string
 }
 
+type FmtOptions struct {
+	Source string
+}
+
 type KCLModule struct {
 	Instance  *wasmtime.Instance
 	Store     *wasmtime.Store
 	Memory    *wasmtime.Memory
 	KclMalloc *wasmtime.Func
 	KclFree   *wasmtime.Func
 	KclRun    *wasmtime.Func
+	KclFmt    *wasmtime.Func
 }
 
 func New(path string) (*KCLModule, error) {
@@ -55,13 +60,15 @@ func New(path string) (*KCLModule, error) {
 	malloc := instance.GetFunc(store, "kcl_malloc")
 	free := instance.GetFunc(store, "kcl_free")
 	run := instance.GetFunc(store, "kcl_run")
+	fmt := instance.GetFunc(store, "kcl_fmt")
 	return &KCLModule{
 		Instance:  instance,
 		Store:     store,
 		Memory:    memory,
 		KclMalloc: malloc,
 		KclFree:   free,
 		KclRun:    run,
+		KclFmt:    fmt,
 	}, nil
 }
 
@@ -106,3 +113,34 @@ func (m *KCLModule) Run(opts *RunOptions) (string, error) {
 
 	return result, nil
 }
+
+func (m *KCLModule) Fmt(opts *FmtOptions) (string, error) {
+	sourcePtr, sourceLen, err := copyStringToWasmMemory(m.Store, m.KclMalloc, m.Memory, opts.Source)
+	if err != nil {
+		return "", err
+	}
+	defer func() {
+		err := freeMemory(m.Store, m.KclFree, sourcePtr, sourceLen)
+		if err != nil {
+			fmt.Println("Failed to free source memory:", err)
+		}
+	}()
+
+	resultPtr, err := m.KclFmt.Call(m.Store, sourcePtr)
+	if err != nil {
+		return "", err
+	}
+
+	result, _, err := copyCStrFromWasmMemory(m.Store, m.Memory, resultPtr.(int32))
+	if err != nil {
+		return "", err
+	}
+	defer func() {
+		err := freeMemory(m.Store, m.KclFree, resultPtr.(int32), int32(len(result)))
+		if err != nil {
+			fmt.Println("Failed to free result memory:", err)
+		}
+	}()
+
+	return result, nil
+}

wasm/examples/node/src/main.ts

@@ -1,6 +1,6 @@
-import { load, invokeKCLRun } from "@kcl-lang/wasm-lib";
+import { load, invokeKCLRun, invokeKCLFmt } from "@kcl-lang/wasm-lib";
 
-async function main() {
+async function run() {
   const inst = await load();
   const result = invokeKCLRun(inst, {
     filename: "test.k",
@@ -13,4 +13,17 @@ p = Person {name = "Alice"}`,
   console.log(result);
 }
 
-main();
+async function fmt() {
+  const inst = await load();
+  const result = invokeKCLFmt(inst, {
+    source: `
+schema Person:
+  name: str
+
+p = Person {name = "Alice"}`,
+  });
+  console.log(result);
+}
+
+run();
+fmt();

wasm/examples/rust/src/lib.rs

@@ -1,6 +1,8 @@
-use std::path::Path;
+#[cfg(test)]
+mod tests;
 
 use anyhow::Result;
+use std::path::Path;
 use wasmtime::*;
 use wasmtime_wasi::{
     preview1::{self, WasiP1Ctx},
@@ -19,18 +21,26 @@ impl State {
     }
 }
 
+#[derive(Debug)]
 pub struct RunOptions {
     pub filename: String,
     pub source: String,
 }
 
+#[derive(Debug)]
+pub struct FmtOptions {
+    pub source: String,
+}
+
 pub struct KCLModule {
     pub instance: Instance,
     store: Store<State>,
     memory: Memory,
     malloc: TypedFunc<i32, i32>,
     free: TypedFunc<(i32, i32), ()>,
     run: TypedFunc<(i32, i32), i32>,
+    fmt: TypedFunc<i32, i32>,
+    runtime_err: TypedFunc<(i32, i32), i32>,
 }
 
 impl KCLModule {
@@ -54,13 +64,17 @@ impl KCLModule {
         let malloc = instance.get_typed_func::<i32, i32>(&mut store, "kcl_malloc")?;
         let free = instance.get_typed_func::<(i32, i32), ()>(&mut store, "kcl_free")?;
         let run = instance.get_typed_func::<(i32, i32), i32>(&mut store, "kcl_run")?;
+        let fmt = instance.get_typed_func::<i32, i32>(&mut store, "kcl_fmt")?;
+        let runtime_err = instance.get_typed_func::<(i32, i32), i32>(&mut store, "kcl_runtime_err")?;
         Ok(KCLModule {
             instance,
             store,
             memory,
             malloc,
             free,
             run,
+            fmt,
+            runtime_err,
         })
     }
 
@@ -70,10 +84,39 @@ impl KCLModule {
             copy_string_to_wasm_memory(&mut self.store, &self.malloc, self.memory, &opts.filename)?;
         let (source_ptr, source_len) =
             copy_string_to_wasm_memory(&mut self.store, &self.malloc, self.memory, &opts.source)?;
-        let result_ptr = self.run.call(&mut self.store, (filename_ptr, source_ptr))?;
+        let runtime_err_len = 1024;
+        let (runtime_err_ptr, _) = malloc_bytes_from_wasm_memory(&mut self.store, &self.malloc, runtime_err_len)?;
+        let result_str = match self.run.call(&mut self.store, (filename_ptr, source_ptr)) {
+            Ok(result_ptr) => {
+                let (result_str, result_len) =
+                    copy_cstr_from_wasm_memory(&mut self.store, self.memory, result_ptr as usize)?;
+                free_memory(&mut self.store, &self.free, result_ptr, result_len)?;
+                result_str
+            },
+            Err(err) => {
+                self.runtime_err.call(&mut self.store, (runtime_err_ptr, runtime_err_len))?;
+                let (runtime_err_str, runtime_err_len) =
+                    copy_cstr_from_wasm_memory(&mut self.store, self.memory, runtime_err_ptr as usize)?;
+                free_memory(&mut self.store, &self.free, runtime_err_ptr, runtime_err_len)?;
+                if runtime_err_str.is_empty() {
+                    return Err(err)
+                } else {
+                    runtime_err_str
+                }
+            },
+        };
+        free_memory(&mut self.store, &self.free, filename_ptr, filename_len)?;
+        free_memory(&mut self.store, &self.free, source_ptr, source_len)?;
+        Ok(result_str)
+    }
+
+    /// Run with the wasm module and options.
+    pub fn fmt(&mut self, opts: &FmtOptions) -> Result<String> {
+        let (source_ptr, source_len) =
+            copy_string_to_wasm_memory(&mut self.store, &self.malloc, self.memory, &opts.source)?;
+        let result_ptr = self.fmt.call(&mut self.store, source_ptr)?;
         let (result_str, result_len) =
             copy_cstr_from_wasm_memory(&mut self.store, self.memory, result_ptr as usize)?;
-        free_memory(&mut self.store, &self.free, filename_ptr, filename_len)?;
         free_memory(&mut self.store, &self.free, source_ptr, source_len)?;
         free_memory(&mut self.store, &self.free, result_ptr, result_len)?;
 
@@ -98,6 +141,15 @@ fn copy_string_to_wasm_memory<T>(
     Ok((ptr, length as usize))
 }
 
+fn malloc_bytes_from_wasm_memory<T>(
+    store: &mut Store<T>,
+    malloc: &TypedFunc<i32, i32>,
+    length: i32,
+) -> Result<(i32, usize)> {
+    let ptr = malloc.call(&mut *store, length)?;
+    Ok((ptr, length as usize))
+}
+
 fn copy_cstr_from_wasm_memory<T>(
     store: &mut Store<T>,
     memory: Memory,

wasm/examples/rust/src/tests.rs

@@ -0,0 +1,68 @@
+use crate::{FmtOptions, KCLModule, RunOptions};
+use anyhow::Result;
+
+const WASM_PATH: &str = "../../kcl.wasm";
+const BENCH_COUNT: usize = 20;
+
+#[test]
+fn test_run() -> Result<()> {
+    let opts = RunOptions {
+        filename: "test.k".to_string(),
+        source: "a = 1".to_string(),
+    };
+    let mut module = KCLModule::from_path(WASM_PATH)?;
+    for _ in 0..BENCH_COUNT {
+        let result = module.run(&opts)?;
+        println!("{}", result);
+    }
+    Ok(())
+}
+
+#[test]
+fn test_run_parse_error() -> Result<()> {
+    let opts = RunOptions {
+        filename: "test.k".to_string(),
+        source: "a = ".to_string(),
+    };
+    let mut module = KCLModule::from_path(WASM_PATH)?;
+    let result = module.run(&opts)?;
+    println!("{}", result);
+    Ok(())
+}
+
+#[test]
+fn test_run_type_error() -> Result<()> {
+    let opts = RunOptions {
+        filename: "test.k".to_string(),
+        source: "a: str = 1".to_string(),
+    };
+    let mut module = KCLModule::from_path(WASM_PATH)?;
+    let result = module.run(&opts)?;
+    println!("{}", result);
+    Ok(())
+}
+
+#[test]
+fn test_run_runtime_error() -> Result<()> {
+    let opts = RunOptions {
+        filename: "test.k".to_string(),
+        source: "a = [][0]".to_string(),
+    };
+    let mut module = KCLModule::from_path(WASM_PATH)?;
+    let result = module.run(&opts)?;
+    println!("{}", result);
+    Ok(())
+}
+
+#[test]
+fn test_fmt() -> Result<()> {
+    let opts = FmtOptions {
+        source: "a = 1".to_string(),
+    };
+    let mut module = KCLModule::from_path(WASM_PATH)?;
+    for _ in 0..BENCH_COUNT {
+        let result = module.fmt(&opts)?;
+        println!("{}", result);
+    }
+    Ok(())
+}

wasm/jest.config.ts

@@ -0,0 +1,11 @@
+import type { Config } from "jest";
+
+const config: Config = {
+  verbose: true,
+  transform: { "^.+\\.ts?$": "ts-jest" },
+  testEnvironment: "node",
+  testRegex: "/tests/.*\\.(test|spec)?\\.(ts|tsx)$",
+  moduleFileExtensions: ["ts", "tsx", "js", "jsx", "json", "node"],
+};
+
+export default config;