llgo gen: todo

cmd/internal/build/build.go

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023 The GoPlus Authors (goplus.org). All rights reserved.
+ * 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.

cmd/internal/gen/gen.go

@@ -0,0 +1,95 @@
+/*
+ * 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 build implements the “llgo gen command.
+package gen
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"reflect"
+
+	"github.com/goplus/llgo"
+	"github.com/goplus/llgo/cl"
+	"github.com/goplus/llgo/cmd/internal/base"
+	"github.com/goplus/llgo/internal/projs"
+	"github.com/goplus/llgo/ssa"
+	"github.com/qiniu/x/errors"
+)
+
+// llgo gen
+var Cmd = &base.Command{
+	UsageLine: "llgo gen [-v] [packages|files]",
+	Short:     "Convert Go code into LLVM ir (*.ll) code",
+}
+
+var (
+	flag        = &Cmd.Flag
+	flagVerbose = flag.Bool("v", false, "print verbose information")
+)
+
+func init() {
+	Cmd.Run = runCmd
+}
+
+func runCmd(cmd *base.Command, args []string) {
+	err := flag.Parse(args)
+	if err != nil {
+		log.Panicln("parse input arguments failed:", err)
+	}
+	pattern := flag.Args()
+	if len(pattern) == 0 {
+		pattern = []string{"."}
+	}
+
+	projects, err := projs.ParseAll(pattern...)
+	if err != nil {
+		log.Panicln("gopprojs.ParseAll:", err)
+	}
+
+	ssa.Initialize(ssa.InitAll)
+	if *flagVerbose {
+		ssa.SetDebug(ssa.DbgFlagAll)
+		cl.SetDebug(cl.DbgFlagAll)
+	}
+
+	for _, proj := range projects {
+		switch v := proj.(type) {
+		case *projs.DirProj:
+			_, _, err = llgo.Gen(v.Dir, nil, true, 0)
+		case *projs.PkgPathProj:
+			_, _, err = llgo.GenPkgPath("", v.Path, nil, true, 0)
+		case *projs.FilesProj:
+			_, err = llgo.GenFiles("", v.Files, nil)
+		default:
+			log.Panicln("`llgo gen` doesn't support", reflect.TypeOf(v))
+		}
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "llgo gen failed: %d errors.\n", errorNum(err))
+			os.Exit(1)
+		}
+	}
+}
+
+func errorNum(err error) int {
+	if e, ok := err.(errors.List); ok {
+		return len(e)
+	}
+	return 1
+}
+
+// -----------------------------------------------------------------------------

cmd/llgo/llgo.go

@@ -26,6 +26,7 @@ import (
 
 	"github.com/goplus/llgo/cmd/internal/base"
 	"github.com/goplus/llgo/cmd/internal/build"
+	"github.com/goplus/llgo/cmd/internal/gen"
 	"github.com/goplus/llgo/cmd/internal/help"
 )
 
@@ -38,6 +39,7 @@ func init() {
 	flag.Usage = mainUsage
 	base.Llgo.Commands = []*base.Command{
 		build.Cmd,
+		gen.Cmd,
 	}
 }