build: separate compiler and libs

compiler/cmd/llgo/llgo.go

@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2023 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"
+	"strings"
+
+	"github.com/qiniu/x/log"
+
+	"github.com/goplus/llgo/compiler/cmd/internal/base"
+	"github.com/goplus/llgo/compiler/cmd/internal/build"
+	"github.com/goplus/llgo/compiler/cmd/internal/clean"
+	"github.com/goplus/llgo/compiler/cmd/internal/get"
+	"github.com/goplus/llgo/compiler/cmd/internal/help"
+	"github.com/goplus/llgo/compiler/cmd/internal/install"
+	"github.com/goplus/llgo/compiler/cmd/internal/run"
+	"github.com/goplus/llgo/compiler/cmd/internal/version"
+)
+
+func mainUsage() {
+	help.PrintUsage(os.Stderr, base.Llgo)
+	os.Exit(2)
+}
+
+func init() {
+	flag.Usage = mainUsage
+	base.Llgo.Commands = []*base.Command{
+		build.Cmd,
+		install.Cmd,
+		get.Cmd,
+		run.Cmd,
+		run.CmpTestCmd,
+		clean.Cmd,
+		version.Cmd,
+	}
+}
+
+func main() {
+	flag.Parse()
+	args := flag.Args()
+	if len(args) < 1 {
+		flag.Usage()
+	}
+	log.SetFlags(log.Ldefault &^ log.LstdFlags)
+
+	base.CmdName = args[0] // for error messages
+	if args[0] == "help" {
+		help.Help(os.Stderr, args[1:])
+		return
+	}
+
+BigCmdLoop:
+	for bigCmd := base.Llgo; ; {
+		for _, cmd := range bigCmd.Commands {
+			if cmd.Name() != args[0] {
+				continue
+			}
+			args = args[1:]
+			if len(cmd.Commands) > 0 {
+				bigCmd = cmd
+				if len(args) == 0 {
+					help.PrintUsage(os.Stderr, bigCmd)
+					os.Exit(2)
+				}
+				if args[0] == "help" {
+					help.Help(os.Stderr, append(strings.Split(base.CmdName, " "), args[1:]...))
+					return
+				}
+				base.CmdName += " " + args[0]
+				continue BigCmdLoop
+			}
+			if !cmd.Runnable() {
+				continue
+			}
+			cmd.Run(cmd, args)
+			return
+		}
+		helpArg := ""
+		if i := strings.LastIndex(base.CmdName, " "); i >= 0 {
+			helpArg = " " + base.CmdName[:i]
+		}
+		fmt.Fprintf(os.Stderr, "llgo %s: unknown command\nRun 'llgo help%s' for usage.\n", base.CmdName, helpArg)
+		os.Exit(2)
+	}
+}