llgo run

cmd/internal/run/run.go

@@ -0,0 +1,85 @@
+/*
+ * 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 run implements the "llgo run" command.
+package run
+
+import (
+	"errors"
+	"path/filepath"
+	"strings"
+
+	"github.com/goplus/llgo/cmd/internal/base"
+	"github.com/goplus/llgo/internal/build"
+)
+
+var (
+	errNoProj = errors.New("llgo: no go files listed")
+)
+
+// llgo run
+var Cmd = &base.Command{
+	UsageLine: "llgo run [build flags] package [arguments...]",
+	Short:     "Compile and run Go program",
+}
+
+func init() {
+	Cmd.Run = runCmd
+}
+
+func runCmd(cmd *base.Command, args []string) {
+	args, runArgs, err := parseRunArgs(args)
+	check(err)
+	conf := build.NewDefaultConf(build.ModeRun)
+	conf.RunArgs = runArgs
+	build.Do(args, conf)
+}
+
+func parseRunArgs(args []string) ([]string, []string, error) {
+	n := parseArgs(args)
+	if n < 0 {
+		return nil, nil, errNoProj
+	}
+
+	arg := args[n]
+	if isGoFile(arg) {
+		n++
+		for n < len(args) && isGoFile(args[n]) {
+			n++
+		}
+		return args[:n], args[n:], nil
+	}
+	return args[:n+1], args[n+1:], nil
+}
+
+func parseArgs(args []string) int {
+	for i, arg := range args {
+		if !strings.HasPrefix(arg, "-") {
+			return i
+		}
+	}
+	return -1
+}
+
+func isGoFile(fname string) bool {
+	return filepath.Ext(fname) == ".go"
+}
+
+func check(err error) {
+	if err != nil {
+		panic(err)
+	}
+}