depinfo.go

package jk

import (
	"errors"
	"strconv"
	"strings"
)

//DependencyInfo handles dependency information of bunsetsu or basic phrases
type DependencyInfo struct {
	To       int
	DepType  rune
	Features Features
	Pas      *Pas
}

//NewDependencyInfo creates a new DependencyInfo with the given line
func NewDependencyInfo(line string) (*DependencyInfo, error) {
	sep1 := strings.IndexRune(line, ' ')
	if sep1 != 1 {
		return nil, errors.New("Invalid separator")
	}
	sep2 := strings.IndexRune(line[sep1+1:], ' ')
	if sep2 < 0 {
		return nil, errors.New("Invalid separator")
	}
	sep2 += sep1 + 1

	depi := new(DependencyInfo)
	var err error
	depi.To, err = strconv.Atoi(line[sep1+1 : sep2-1])
	if err != nil {
		return nil, err
	}
	depi.DepType = rune(line[sep2-1])

	depi.Features = getFeatures(line[sep2+1:], '>', 1)
	if pasresult, ok := depi.Features["格解析結果"]; ok {
		depi.Pas, err = NewPas(pasresult, true)
	}

	return depi, err
}