github.com/goplus/igop@v0.25.0/cmd/internal/run/run.go (about)

     1  /*
     2   Copyright 2021 The GoPlus Authors (goplus.org)
     3  
     4   Licensed under the Apache License, Version 2.0 (the "License");
     5   you may not use this file except in compliance with the License.
     6   You may obtain a copy of the License at
     7  
     8       http://www.apache.org/licenses/LICENSE-2.0
     9  
    10   Unless required by applicable law or agreed to in writing, software
    11   distributed under the License is distributed on an "AS IS" BASIS,
    12   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   See the License for the specific language governing permissions and
    14   limitations under the License.
    15  */
    16  
    17  // Package run implements the “gop run” command.
    18  package run
    19  
    20  import (
    21  	"context"
    22  	"fmt"
    23  	"log"
    24  	"os"
    25  	"path/filepath"
    26  
    27  	"github.com/goplus/igop"
    28  	"github.com/goplus/igop/cmd/internal/base"
    29  	"github.com/goplus/igop/cmd/internal/load"
    30  	"golang.org/x/tools/go/ssa"
    31  )
    32  
    33  // -----------------------------------------------------------------------------
    34  
    35  // Cmd - igop run
    36  var Cmd = &base.Command{
    37  	UsageLine: "igop run [build flags] [package] [arguments...]",
    38  	Short:     "run a Go/Go+ package",
    39  }
    40  
    41  var (
    42  	flag = &Cmd.Flag
    43  )
    44  
    45  func init() {
    46  	Cmd.Run = runCmd
    47  	base.AddBuildFlags(Cmd, base.OmitModFlag|base.OmitSSAFlag|base.OmitSSATraceFlag|
    48  		base.OmitVFlag|base.OmitExperimentalGCFlag)
    49  }
    50  
    51  func runCmd(cmd *base.Command, args []string) {
    52  	err := flag.Parse(args)
    53  	if err != nil {
    54  		os.Exit(2)
    55  	}
    56  	paths := flag.Args()
    57  	if len(paths) == 0 {
    58  		paths = []string{"."}
    59  	}
    60  	args = paths[1:]
    61  	path, _ := filepath.Abs(paths[0])
    62  	isDir, err := load.IsDir(path)
    63  	if err != nil {
    64  		log.Fatalln("input arg check failed:", err)
    65  	}
    66  	var mode igop.Mode
    67  	if base.BuildSSA {
    68  		mode |= igop.EnableDumpInstr
    69  	}
    70  	if base.DebugSSATrace {
    71  		mode |= igop.EnableTracing
    72  	}
    73  	if base.BuildX {
    74  		mode |= igop.EnableDumpImports
    75  	}
    76  	if base.ExperimentalGC {
    77  		mode |= igop.ExperimentalSupportGC
    78  	}
    79  	ctx := igop.NewContext(mode)
    80  	ctx.BuildContext = base.BuildContext
    81  	ctx.RunContext = context.TODO()
    82  	var pkg *ssa.Package
    83  	var input string
    84  	if isDir {
    85  		if load.SupportGop && load.IsGopProject(path) {
    86  			err := load.BuildGopDir(ctx, path)
    87  			if err != nil {
    88  				fmt.Fprintln(os.Stderr, err)
    89  				os.Exit(2)
    90  			}
    91  		}
    92  		pkg, err = ctx.LoadDir(path, false)
    93  		input = path
    94  	} else {
    95  		pkg, err = ctx.LoadFile(path, nil)
    96  		input, _ = filepath.Split(path)
    97  	}
    98  	if err != nil {
    99  		fmt.Fprintln(os.Stderr, err)
   100  		os.Exit(2)
   101  	}
   102  	interp, err := ctx.NewInterp(pkg)
   103  	if err != nil {
   104  		fmt.Fprintln(os.Stderr, err)
   105  		os.Exit(2)
   106  	}
   107  	if base.BuildV {
   108  		fmt.Println(pkg.Pkg.Path())
   109  	}
   110  	code, err := ctx.RunInterp(interp, input, args)
   111  	if err != nil {
   112  		if e, ok := err.(igop.PanicError); ok {
   113  			fmt.Fprintf(os.Stderr, "panic: %v\n\n%s\n", e.Error(), e.Stack())
   114  		} else {
   115  			fmt.Fprintln(os.Stderr, err)
   116  		}
   117  		os.Exit(2)
   118  	}
   119  	os.Exit(code)
   120  }