| 1 | // Copyright 2018 The Go Authors. All rights reserved. |
|---|---|
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | package packages_test |
| 6 | |
| 7 | import ( |
| 8 | "flag" |
| 9 | "fmt" |
| 10 | "os" |
| 11 | |
| 12 | "golang.org/x/tools/go/packages" |
| 13 | ) |
| 14 | |
| 15 | // Example demonstrates how to load the packages specified on the |
| 16 | // command line from source syntax. |
| 17 | func Example() { |
| 18 | flag.Parse() |
| 19 | |
| 20 | // Many tools pass their command-line arguments (after any flags) |
| 21 | // uninterpreted to packages.Load so that it can interpret them |
| 22 | // according to the conventions of the underlying build system. |
| 23 | cfg := &packages.Config{Mode: packages.NeedFiles | packages.NeedSyntax} |
| 24 | pkgs, err := packages.Load(cfg, flag.Args()...) |
| 25 | if err != nil { |
| 26 | fmt.Fprintf(os.Stderr, "load: %v\n", err) |
| 27 | os.Exit(1) |
| 28 | } |
| 29 | if packages.PrintErrors(pkgs) > 0 { |
| 30 | os.Exit(1) |
| 31 | } |
| 32 | |
| 33 | // Print the names of the source files |
| 34 | // for each package listed on the command line. |
| 35 | for _, pkg := range pkgs { |
| 36 | fmt.Println(pkg.ID, pkg.GoFiles) |
| 37 | } |
| 38 | } |
| 39 |