}

// ParseFS is like [Template.ParseFiles] or [Template.ParseGlob] but reads from the file system fsys
// instead of the host operating system's file system.
// It accepts a list of glob patterns (see [path.Match]).
// (Note that most file names serve as glob patterns matching only themselves.)
func ParseFS(fsys fs.FS, patterns ...string) (*Template, error) {
	return parseFS(nil, fsys, patterns)
}

	return template.IsTrue(val)
}

// ParseFS is like [ParseFiles] or [ParseGlob] but reads from the file system fs
// instead of the host operating system's file system.
// It accepts a list of glob patterns.
// (Note that most file names serve as glob patterns matching only themselves.)
func ParseFS(fs fs.FS, patterns ...string) (*Template, error) {
	return parseFS(nil, fs, patterns)
}

`

func TestMultiExecute(t *testing.T) {
	// Declare a couple of templates first.
	template, err := New("root").Parse(multiText1)
	if err != nil {
		t.Fatalf("parse error for 1: %s", err)
	}
	_, err = template.Parse(multiText2)
	if err != nil {
		t.Fatalf("parse error for 2: %s", err)
	}
	testExecute(multiExecTests, template, t)
}

func TestParseFiles(t *testing.T) {

	}
}

func TestAddParseTree(t *testing.T) {
	// Create some templates.
	root, err := New("root").Parse(cloneText1)
	if err != nil {
		t.Fatal(err)
	}
	_, err = root.Parse(cloneText2)
	if err != nil {
		t.Fatal(err)
	}
	// Add a new parse tree.
	tree, err := parse.Parse("cloneText3", cloneText3, "", "", nil, builtins())
	if err != nil {
		t.Fatal(err)
	}

//
// For example, given the content variable in the example above, we can write:
//
//	http.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.FS(content))))
//
//	template.ParseFS(content, "*.tmpl")
//
// # Tools
//
// To support tools that analyze Go packages, the patterns found in //go:embed lines
// are available in “go list” output. See the EmbedPatterns, TestEmbedPatterns,

}

// FuncExpr represents a function call
type FuncExpr struct {
	SFunc     *SimpleArgFunc `parser:"  @@"`
	Count     *CountFunc     `parser:"| @@"`
	Cast      *CastFunc      `parser:"| @@"`
	Substring *SubstringFunc `parser:"| @@"`
	Extract   *ExtractFunc   `parser:"| @@"`
	Trim      *TrimFunc      `parser:"| @@"`
	DateAdd   *DateAddFunc   `parser:"| @@"`
	DateDiff  *DateDiffFunc  `parser:"| @@"`

	case *WithNode:
	default:
		panic("unknown node: " + n.String())
	}
	return false
}

// parse is the top-level parser for a template, essentially the same
// as itemList except it also parses {{define}} actions.
// It runs to EOF.
func (t *Tree) parse() {
	t.Root = t.newList(t.peek().pos)
	for t.peek().typ != itemEOF {
		if t.peek().typ == itemLeftDelim {
			delim := t.next()

	return isGoFile(dir) &&
		!strings.HasSuffix(dir.Name(), "_test.go") // ignore test files
}

func pkgName(filename string) string {
	file, err := parser.ParseFile(token.NewFileSet(), filename, nil, parser.PackageClauseOnly)
	if err != nil || file == nil {
		return ""
	}
	return file.Name.Name
}

func parseDir(dirpath string) map[string]*ast.Package {

	Value     []string // The contents of the command (ex: `ubuntu:xenial`)
}

// parseFile parses a Dockerfile from a filename.
func parseFile(filename string) ([]Command, error) {
	file, err := os.Open(filename)
	if err != nil {
		return nil, err
	}
	defer file.Close()

	res, err := parser.Parse(file)
	if err != nil {
		return nil, err
	}

	var ret []Command

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) {
	parsed := &Rule{Raw: rule}

	// Split rule into "words" (where a quoted string is a single word).