package testmark

// HunkIter provides safe iteration over document hunks following Go conventions.
// Use the Next() method which returns (value, bool) like other Go iterators.
type HunkIter struct {
	doc   *Document
	index int
}

// Next advances to the next hunk and returns the hunk and true if successful.
// Returns nil, false when iteration is complete.
// This follows the Go convention of returning (value, bool).
func (it *HunkIter) Next() (*Hunk, bool) {
	if it.index >= len(it.doc.hunks) {
		return nil, false
	}
	hunk := it.doc.hunks[it.index]
	it.index++
	return hunk.hunk, true
}

// All returns all remaining hunks as a slice.
func (it *HunkIter) All() []*Hunk {
	var result []*Hunk
	for hunk, ok := it.Next(); ok; hunk, ok = it.Next() {
		result = append(result, hunk)
	}
	return result
}

// DirIter provides safe iteration over directory entries following Go conventions.
// Use the Next() method which returns (value, bool) like other Go iterators.
type DirIter struct {
	entries []*DirEntry
	index   int
}

// Next advances to the next entry and returns the entry and true if successful.
// Returns nil, false when iteration is complete.
// This follows the Go convention of returning (value, bool).
func (it *DirIter) Next() (*DirEntry, bool) {
	if it.index >= len(it.entries) {
		return nil, false
	}
	entry := it.entries[it.index]
	it.index++
	return entry, true
}

// All returns all remaining entries as a slice.
func (it *DirIter) All() []*DirEntry {
	var result []*DirEntry
	for entry, ok := it.Next(); ok; entry, ok = it.Next() {
		result = append(result, entry)
	}
	return result
}