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improve tags godoc.

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This commit is contained in:
fiatjaf
2022-11-11 10:56:17 -03:00
parent 8a12bb2c18
commit 50e47392a9
1 changed files with 6 additions and 3 deletions
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9
event_aux.go
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@@ -38,7 +38,7 @@ func (tag Tag) StartsWith(prefix []string) bool {
type Tags []Tag type Tags []Tag
// GetFirst gets the first tag in tags that matches tagPrefix, see [Tag.StartsWith] // GetFirst gets the first tag in tags that matches the prefix, see [Tag.StartsWith]
func (tags Tags) GetFirst(tagPrefix []string) *Tag { func (tags Tags) GetFirst(tagPrefix []string) *Tag {
for _, v := range tags { for _, v := range tags {
if v.StartsWith(tagPrefix) { if v.StartsWith(tagPrefix) {
@@ -48,7 +48,7 @@ func (tags Tags) GetFirst(tagPrefix []string) *Tag {
return nil return nil
} }
// GetLast gets the last tag in tags that matches tagPrefix, see [Tag.StartsWith] // GetLast gets the last tag in tags that matches the prefix, see [Tag.StartsWith]
func (tags Tags) GetLast(tagPrefix []string) *Tag { func (tags Tags) GetLast(tagPrefix []string) *Tag {
for i := len(tags) - 1; i >= 0; i-- { for i := len(tags) - 1; i >= 0; i-- {
v := tags[i] v := tags[i]
@@ -59,6 +59,7 @@ func (tags Tags) GetLast(tagPrefix []string) *Tag {
return nil return nil
} }
// GetLast gets all the tags that match the prefix, see [Tag.StartsWith]
func (tags Tags) GetAll(tagPrefix []string) Tags { func (tags Tags) GetAll(tagPrefix []string) Tags {
result := make(Tags, 0, len(tags)) result := make(Tags, 0, len(tags))
for _, v := range tags { for _, v := range tags {
@@ -69,6 +70,7 @@ func (tags Tags) GetAll(tagPrefix []string) Tags {
return result return result
} }
// FilterOut removes all tags that match the prefix, see [Tag.StartsWith]
func (tags Tags) FilterOut(tagPrefix []string) Tags { func (tags Tags) FilterOut(tagPrefix []string) Tags {
filtered := make(Tags, 0, len(tags)) filtered := make(Tags, 0, len(tags))
for _, v := range tags { for _, v := range tags {
@@ -79,9 +81,10 @@ func (tags Tags) FilterOut(tagPrefix []string) Tags {
return filtered return filtered
} }
// AppendUnique appends a tag if it doesn't exist yet, otherwise does nothing
func (tags Tags) AppendUnique(tag Tag) Tags { func (tags Tags) AppendUnique(tag Tag) Tags {
if tags.GetFirst(tag) == nil { if tags.GetFirst(tag) == nil {
return append(tags.FilterOut(tag), tag) return append(tags, tag)
} else { } else {
return tags return tags
} }