entry_iterator.go

package client
//
 // Copyright (c) 2019 ARM Limited.
 //
 // SPDX-License-Identifier: MIT
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to
 // deal in the Software without restriction, including without limitation the
 // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 // sell copies of the Software, and to permit persons to whom the Software is
 // furnished to do so, subject to the following conditions:
 //
 // The above copyright notice and this permission notice shall be included in all
 // copies or substantial portions of the Software.
 //
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 //


type iteratorEntry struct {
    prefix string
    key string
    entry Entry
}

type EntryIterator struct {
    entries []iteratorEntry
    currentEntry int
}

func (iter *EntryIterator) Next() bool {
    if iter.currentEntry < len(iter.entries) {
        iter.currentEntry++
    }

    return iter.currentEntry < len(iter.entries)
}

func (iter *EntryIterator) Prefix() string {
    if iter.currentEntry < 0 || iter.currentEntry >= len(iter.entries) {
        return ""
    }

    return iter.entries[iter.currentEntry].prefix
}

func (iter *EntryIterator) Key() string {
    if iter.currentEntry < 0 || iter.currentEntry >= len(iter.entries) {
        return ""
    }

    return iter.entries[iter.currentEntry].key
}

func (iter *EntryIterator) Entry() Entry {
    if iter.currentEntry < 0 || iter.currentEntry >= len(iter.entries) {
        return Entry{}
    }

    return iter.entries[iter.currentEntry].entry
}