vendor/github.com/graph-gophers/graphql-go/id.go


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package graphql

import (
    "errors"
    "strconv"
)

// ID represents GraphQL's "ID" scalar type. A custom type may be used instead.
type ID string

func (ID) ImplementsGraphQLType(name string) bool {
    return name == "ID"
}

func (id *ID) UnmarshalGraphQL(input interface{}) error {
    var err error
    switch input := input.(type) {
    case string:
        *id = ID(input)
    case int32:
        *id = ID(strconv.Itoa(int(input)))
    default:
        err = errors.New("wrong type")
    }
    return err
}

func (id ID) MarshalJSON() ([]byte, error) {
    return strconv.AppendQuote(nil, string(id)), nil
}