less []string
	op   string // Either "<" or "!<"
	def  []string
}

type syntaxError string

func (e syntaxError) Error() string {
	return string(e)
}

// parseRules parses the rules of a DAG.
func parseRules(rules string) (out []rule, err error) {
	defer func() {
		e := recover()
		switch e := e.(type) {
		case nil:
			return
		case syntaxError:
			err = e
		default:
			panic(e)

// the last one mentioned will be the one that results.
// For instance, ParseFiles("a/foo", "b/foo") stores "b/foo" as the template
// named "foo", while "a/foo" is unavailable.
func ParseFiles(filenames ...string) (*Template, error) {
	return parseFiles(nil, readFileOS, filenames...)
}

// ParseFiles parses the named files and associates the resulting templates with

//
// ParseFiles returns an error if t or any associated template has already been executed.
func (t *Template) ParseFiles(filenames ...string) (*Template, error) {
	return parseFiles(t, readFileOS, filenames...)
}

// parseFiles is the helper for the method and function. If the argument
// template is nil, it is created from the first file.

// Used by ParseRule
var boolPtrType = reflect.PointerTo(reflect.TypeOf(true))
var ipTablesValuePtrType = reflect.TypeOf((*IPTablesValue)(nil))

// ParseRule parses rule. If strict is false, it will parse the recognized
// parameters and ignore unrecognized ones. If it is true, parsing will fail if there are
// unrecognized parameters.
func ParseRule(rule string, strict bool) (*Rule, error) {

	if _, nogo := err.(*build.NoGoError); err != nil && !nogo {
		return nil, err
	}

	if *xtestFiles {
		return parseFiles(dir, pkginfo.XTestGoFiles)
	}

	filenames := append(pkginfo.GoFiles, pkginfo.CgoFiles...)
	if *testFiles {
		filenames = append(filenames, pkginfo.TestGoFiles...)
	}
	return parseFiles(dir, filenames)
}

func getPkgFiles(args []string) ([]*ast.File, error) {
	if len(args) == 0 {
		// stdin

	}
	testExecute(multiExecTests, template, t)
}

func TestParseFiles(t *testing.T) {
	_, err := ParseFiles("DOES NOT EXIST")
	if err == nil {
		t.Error("expected error for non-existent file; got none")
	}
	template := New("root")
	_, err = template.ParseFiles("testdata/file1.tmpl", "testdata/file2.tmpl")
	if err != nil {
		t.Fatalf("error parsing files: %v", err)
	}

}

func TestRedefineOtherParsers(t *testing.T) {
	c := newTestCase(t)
	c.mustParse(c.root, ``)
	c.mustExecute(c.root, nil, ``)
	if _, err := c.root.ParseFiles("no.template"); err == nil || !strings.Contains(err.Error(), "Execute") {
		t.Errorf("ParseFiles: %v\nwanted error about already having Executed", err)
	}
	if _, err := c.root.ParseGlob("*.no.template"); err == nil || !strings.Contains(err.Error(), "Execute") {

	}
	testExecute(multiExecTests, template, t)
}

func TestParseFiles(t *testing.T) {
	_, err := ParseFiles("DOES NOT EXIST")
	if err == nil {
		t.Error("expected error for non-existent file; got none")
	}
	template := New("root")
	_, err = template.ParseFiles("testdata/file1.tmpl", "testdata/file2.tmpl")
	if err != nil {
		t.Fatalf("error parsing files: %v", err)
	}

			p.packages[bp.ImportPath] = nil
		}
	}()

	var filenames []string
	filenames = append(filenames, bp.GoFiles...)
	filenames = append(filenames, bp.CgoFiles...)

	files, err := p.parseFiles(bp.Dir, filenames)
	if err != nil {
		return nil, err
	}

	// type-check package files
	var firstHardErr error
	conf := types.Config{
		IgnoreFuncBodies: true,

	f, err := os.Create(filepath.Join(c.kubeHome, envScriptFileName))
	if err != nil {
		c.t.Fatalf("Failed to create envScript: %v", err)
	}
	defer f.Close()

	t, err := template.ParseFiles(templates...)
	if err != nil {
		c.t.Fatalf("Failed to parse files %q, err: %v", templates, err)
	}

	if err = t.ExecuteTemplate(f, target, env); err != nil {