--- /dev/null
+package packages_test
+
+import (
+ "flag"
+ "fmt"
+ "os"
+
+ "golang.org/x/tools/go/packages"
+)
+
+// Example demonstrates how to load the packages specified on the
+// command line from source syntax.
+func Example() {
+ flag.Parse()
+
+ // Many tools pass their command-line arguments (after any flags)
+ // uninterpreted to packages.Load so that it can interpret them
+ // according to the conventions of the underlying build system.
+ cfg := &packages.Config{Mode: packages.NeedFiles | packages.NeedSyntax}
+ pkgs, err := packages.Load(cfg, flag.Args()...)
+ if err != nil {
+ fmt.Fprintf(os.Stderr, "load: %v\n", err)
+ os.Exit(1)
+ }
+ if packages.PrintErrors(pkgs) > 0 {
+ os.Exit(1)
+ }
+
+ // Print the names of the source files
+ // for each package listed on the command line.
+ for _, pkg := range pkgs {
+ fmt.Println(pkg.ID, pkg.GoFiles)
+ }
+}