Function Compile

xpath.go:140–152

Compile compiles an XPath expression string.

(expr string)

// Compile compiles an XPath expression string.
func Compile(expr string) (*Expr, error) {
	if expr == "" {
		return nil, errors.New("expr expression is nil")
	}
	qy, err := build(expr, nil)
	if err != nil {
		return nil, err
	}
	if qy == nil {
		return nil, fmt.Errorf(fmt.Sprintf("undeclared variable in XPath expression: %s", expr))
	}
	return &Expr{s: expr, q: qy}, nil
}

// MustCompile compiles an XPath expression string and ignored error.
func MustCompile(expr string) *Expr {