return errors.New("x509: SAN uniformResourceIdentifier is malformed")
			}
			uri, err := url.Parse(uriStr)
			if err != nil {
				return fmt.Errorf("x509: cannot parse URI %q: %s", uriStr, err)
			}
			if len(uri.Host) > 0 {
				if _, ok := domainToReverseLabels(uri.Host); !ok {
					return fmt.Errorf("x509: cannot parse URI %q: invalid domain", uriStr)
				}
			}
			uris = append(uris, uri)
		case nameTypeIP:

}

// 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).

			// need to parse a full expression. Notably, name <- x
			// is not a concern because name <- x is a statement and
			// not an expression.
			var x Expr = p.name()
			if p.tok != _Lbrack {
				// To parse the expression starting with name, expand
				// the call sequence we would get by passing in name
				// to parser.expr, and pass in name to parser.pexpr.
				p.xnest++

// license that can be found in the LICENSE file.

// Package parser implements a parser for Go source files. Input may be
// provided in a variety of forms (see the various Parse* functions); the
// output is an abstract syntax tree (AST) representing the Go source. The
// parser is invoked through one of the Parse* functions.

package parser

import (
	"fmt"
	"go/ast"
	"go/scanner"
	"go/token"
)

// license that can be found in the LICENSE file.

// Package parser implements a parser for Go source files. Input may be
// provided in a variety of forms (see the various Parse* functions); the
// output is an abstract syntax tree (AST) representing the Go source. The
// parser is invoked through one of the Parse* functions.
//
// The parser accepts a larger language than is syntactically permitted by

limitations under the License.
*/

package parsers

import (
	"fmt"
	//  Import the crypto sha256 algorithm for the docker image parser to work
	_ "crypto/sha256"
	//  Import the crypto/sha512 algorithm for the docker image parser to work with 384 and 512 sha hashes
	_ "crypto/sha512"

	dockerref "github.com/distribution/reference"
)

// ParseImageName parses a docker image string into three parts: repo, tag and digest.