//  Copyright (c) 2014 Couchbase, Inc.
//
// Licensed 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 single

import (
	"github.com/blevesearch/bleve/v2/analysis"
	"github.com/blevesearch/bleve/v2/registry"
)

const Name = "single"

type SingleTokenTokenizer struct {
}

func NewSingleTokenTokenizer() *SingleTokenTokenizer {
	return &SingleTokenTokenizer{}
}

func (t *SingleTokenTokenizer) Tokenize(input []byte) analysis.TokenStream {
	return analysis.TokenStream{
		&analysis.Token{
			Term:     input,
			Position: 1,
			Start:    0,
			End:      len(input),
			Type:     analysis.AlphaNumeric,
		},
	}
}

func SingleTokenTokenizerConstructor(config map[string]interface{}, cache *registry.Cache) (analysis.Tokenizer, error) {
	return NewSingleTokenTokenizer(), nil
}

func init() {
	err := registry.RegisterTokenizer(Name, SingleTokenTokenizerConstructor)
	if err != nil {
		panic(err)
	}
}