81 lines
1.8 KiB
Go
81 lines
1.8 KiB
Go
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package gime
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import "fmt"
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// TagCollection is a collection of strings for gomobile bindings
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type TagCollection struct {
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list []string
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}
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// Length returns the number of tags in the collection
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func (tc *TagCollection) Length() int {
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return len(tc.list)
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}
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// Get returns the string at idx or an empty string
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func (tc *TagCollection) Get(idx int) string {
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if idx < tc.Length() {
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return tc.list[idx]
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}
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return ""
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}
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// Clear empties the list of Tags
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func (tc *TagCollection) Clear() {
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tc.list = tc.list[:0]
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}
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// Index finds the index of the given string or -1 if not found
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func (tc *TagCollection) Index(t string) int {
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for i, tst := range tc.list {
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if tst == t {
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return i
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}
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}
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return -1
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}
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// Insert inserts a string into the collection at i
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func (tc *TagCollection) Insert(i int, t string) {
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if i < 0 || i > tc.Length() {
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fmt.Println("gime: Attempted to insert string at invalid index")
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}
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tc.list = append(tc.list, "")
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copy(tc.list[i+1:], tc.list[i:])
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tc.list[i] = t
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}
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// Remove removes the string at i from the collection
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func (tc *TagCollection) Remove(i int) {
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if i < 0 || i >= tc.Length() {
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fmt.Println("gime: Attempted to remove tag at invalid index")
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}
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copy(tc.list[i:], tc.list[i+1:])
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tc.list[len(tc.list)-1] = ""
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tc.list = tc.list[:len(tc.list)-1]
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}
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// Push adds an element to the end of the collection
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func (tc *TagCollection) Push(t string) {
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tc.Insert(tc.Length(), t)
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}
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// Pop removes the last element from the collection
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func (tc *TagCollection) Pop() string {
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ret := tc.list[tc.Length()-1]
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tc.Remove(tc.Length() - 1)
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return ret
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}
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// Unshift adds an element to the front of the collection
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func (tc *TagCollection) Unshift(t string) {
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tc.Insert(0, t)
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}
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// Shift removes an element from the front of the collection
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func (tc *TagCollection) Shift() string {
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ret := tc.list[0]
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tc.Remove(0)
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return ret
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}
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