minecraft - nbt/lists_end.go

     1  package nbt
     2  
     3  import "strconv"
     4  
     5  // ListEnd satisfies the List interface for a list of Ends
     6  type ListEnd uint32
     7  
     8  // Equal satisfies the equaler.Equaler interface, allowing for types to be
     9  // checked for equality
    10  func (l ListEnd) Equal(e interface{}) bool {
    11  	m, ok := e.(List)
    12  	return ok && m.TagType() == TagEnd && ListEnd(m.Len()) == l
    13  }
    14  
    15  // Copy simply returns a deep-copy the the data
    16  func (l ListEnd) Copy() Data {
    17  	return &l
    18  }
    19  
    20  func (l ListEnd) String() string {
    21  	return strconv.Itoa(int(l)) + " entries of type End"
    22  }
    23  
    24  // Type returns the TagID of the data
    25  func (ListEnd) Type() TagID {
    26  	return TagList
    27  }
    28  
    29  // TagType returns the TagID of the type of tag this list contains
    30  func (ListEnd) TagType() TagID {
    31  	return TagEnd
    32  }
    33  
    34  // Set does nothing as it's not applicable for ListEnd
    35  func (l ListEnd) Set(_ int, d Data) error {
    36  	return nil
    37  }
    38  
    39  // Get returns an end{}
    40  func (ListEnd) Get(_ int) Data {
    41  	return end{}
    42  }
    43  
    44  // Append adds to the list
    45  func (l *ListEnd) Append(d ...Data) error {
    46  	*l += ListEnd(len(d))
    47  	return nil
    48  }
    49  
    50  // Insert adds to the list
    51  func (l *ListEnd) Insert(_ int, d ...Data) error {
    52  	*l += ListEnd(len(d))
    53  	return nil
    54  }
    55  
    56  // Remove removes from the list
    57  func (l *ListEnd) Remove(i int) {
    58  	if ListEnd(i) < *l {
    59  		*l--
    60  	}
    61  }
    62  
    63  // Len returns the length of the List
    64  func (l ListEnd) Len() int {
    65  	return int(l)
    66  }
    67  
    68  // ListEnd returns the list as a specifically typed List
    69  func (l ListData) ListEnd() ListEnd {
    70  	if l.tagType != TagEnd {
    71  		return 0
    72  	}
    73  	return ListEnd(len(l.data))
    74  }
    75