// Licensed to Apache Software Foundation (ASF) under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Apache Software Foundation (ASF) licenses this file to you under
// the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

package tools

import (
	"strings"

	"github.com/dave/dst"
)

func ContainsDirective(desc dst.Node, directive string) bool {
	if desc == nil || desc.Decorations() == nil {
		return false
	}
	for _, s := range desc.Decorations().Start.All() {
		if strings.HasPrefix(s, directive) {
			return true
		}
	}
	return false
}

func FindDirective(desc dst.Node, directive string) string {
	if desc == nil || desc.Decorations() == nil {
		return ""
	}
	for _, s := range desc.Decorations().Start.All() {
		if strings.HasPrefix(s, directive) {
			return s
		}
	}
	return ""
}
