move out c/cpp/py

chore/llgen/llgen.go

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+
+	"github.com/goplus/llgo/internal/llgen"
+)
+
+func main() {
+	flag.Parse()
+	if len(flag.Args()) != 1 {
+		fmt.Fprintln(os.Stderr, "Usage: llgen [flags] <pkg>")
+		return
+	}
+	llgen.SmartDoFile(flag.Args()[0])
+}

chore/llgen/llgen_test.go

@@ -0,0 +1,65 @@
+//go:build !llgo
+// +build !llgo
+
+package main
+
+import (
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestMain(t *testing.T) {
+	// Create test package in current module
+	testPkg := filepath.Join(".testdata_dont_commit", "hello")
+	err := os.MkdirAll(testPkg, 0755)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(filepath.Join(".testdata_dont_commit"))
+
+	helloFile := filepath.Join(testPkg, "hello.go")
+	err = os.WriteFile(helloFile, []byte(`package hello
+
+func Hello() string {
+	return "Hello, World!"
+}
+`), 0644)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Save original args and restore them after test
+	oldArgs := os.Args
+	defer func() { os.Args = oldArgs }()
+
+	// Get absolute path to test package
+	absTestPkg, err := filepath.Abs(testPkg)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Set test arguments
+	os.Args = []string{"llgen", absTestPkg}
+
+	// Run main
+	main()
+
+	// Check if the output file exists
+	outputFile := filepath.Join(testPkg, "llgo_autogen.ll")
+	log.Printf("Generated file: %s", filepath.Join(absTestPkg, "llgo_autogen.ll"))
+	if _, err = os.Stat(outputFile); err != nil {
+		t.Fatalf("Generated file should exist: %v", err)
+	}
+
+	// Read and verify file content
+	content, err := os.ReadFile(outputFile)
+	if err != nil {
+		t.Fatalf("Should be able to read generated file: %v", err)
+	}
+	if !strings.Contains(string(content), "define") {
+		t.Error("Generated file should contain LLVM IR code")
+	}
+}