198 行
5.8 KiB
Go
198 行
5.8 KiB
Go
package propertyhreflang
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import (
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"fmt"
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bcp47 "github.com/go-fed/activity/streams/values/bcp47"
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vocab "github.com/go-fed/activity/streams/vocab"
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"net/url"
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)
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// HreflangProperty is the functional property "hreflang". It is permitted to be a
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// single default-valued value type.
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type HreflangProperty struct {
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bcp47Member string
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hasBcp47Member bool
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unknown []byte
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iri *url.URL
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alias string
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}
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// DeserializeHreflangProperty creates a "hreflang" property from an interface
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// representation that has been unmarshalled from a text or binary format.
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func DeserializeHreflangProperty(m map[string]interface{}, aliasMap map[string]string) (*HreflangProperty, error) {
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alias := ""
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if a, ok := aliasMap["https://www.w3.org/TR/activitystreams-vocabulary"]; ok {
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alias = a
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}
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propName := "hreflang"
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if len(alias) > 0 {
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// Use alias both to find the property, and set within the property.
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propName = fmt.Sprintf("%s:%s", alias, "hreflang")
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}
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if i, ok := m[propName]; ok {
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if s, ok := i.(string); ok {
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u, err := url.Parse(s)
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// If error exists, don't error out -- skip this and treat as unknown string ([]byte) at worst
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if err == nil {
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this := &HreflangProperty{
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alias: alias,
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iri: u,
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}
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return this, nil
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}
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}
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if v, err := bcp47.DeserializeBcp47(i); err != nil {
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this := &HreflangProperty{
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alias: alias,
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bcp47Member: v,
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hasBcp47Member: true,
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}
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return this, nil
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} else if v, ok := i.([]byte); ok {
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this := &HreflangProperty{
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alias: alias,
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unknown: v,
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}
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return this, nil
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} else {
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return nil, fmt.Errorf("could not deserialize %q property", "hreflang")
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}
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}
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return nil, nil
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}
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// NewHreflangProperty creates a new hreflang property.
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func NewHreflangProperty() *HreflangProperty {
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return &HreflangProperty{alias: ""}
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}
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// Clear ensures no value of this property is set. Calling IsBcp47 afterwards will
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// return false.
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func (this *HreflangProperty) Clear() {
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this.unknown = nil
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this.iri = nil
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this.hasBcp47Member = false
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}
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// Get returns the value of this property. When IsBcp47 returns false, Get will
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// return any arbitrary value.
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func (this HreflangProperty) Get() string {
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return this.bcp47Member
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}
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// GetIRI returns the IRI of this property. When IsIRI returns false, GetIRI will
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// return any arbitrary value.
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func (this HreflangProperty) GetIRI() *url.URL {
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return this.iri
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}
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// HasAny returns true if the value or IRI is set.
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func (this HreflangProperty) HasAny() bool {
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return this.IsBcp47() || this.iri != nil
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}
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// IsBcp47 returns true if this property is set and not an IRI.
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func (this HreflangProperty) IsBcp47() bool {
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return this.hasBcp47Member
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}
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// IsIRI returns true if this property is an IRI.
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func (this HreflangProperty) IsIRI() bool {
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return this.iri != nil
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}
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// JSONLDContext returns the JSONLD URIs required in the context string for this
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// property and the specific values that are set. The value in the map is the
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// alias used to import the property's value or values.
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func (this HreflangProperty) JSONLDContext() map[string]string {
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m := map[string]string{"https://www.w3.org/TR/activitystreams-vocabulary": this.alias}
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var child map[string]string
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/*
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Since the literal maps in this function are determined at
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code-generation time, this loop should not overwrite an existing key with a
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new value.
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*/
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for k, v := range child {
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m[k] = v
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}
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return m
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}
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// KindIndex computes an arbitrary value for indexing this kind of value. This is
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// a leaky API detail only for folks looking to replace the go-fed
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// implementation. Applications should not use this method.
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func (this HreflangProperty) KindIndex() int {
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if this.IsBcp47() {
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return 0
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}
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if this.IsIRI() {
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return -2
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}
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return -1
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}
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// LessThan compares two instances of this property with an arbitrary but stable
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// comparison. Applications should not use this because it is only meant to
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// help alternative implementations to go-fed to be able to normalize
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// nonfunctional properties.
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func (this HreflangProperty) LessThan(o vocab.HreflangPropertyInterface) bool {
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// LessThan comparison for if either or both are IRIs.
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if this.IsIRI() && o.IsIRI() {
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return this.iri.String() < o.GetIRI().String()
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} else if this.IsIRI() {
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// IRIs are always less than other values, none, or unknowns
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return true
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} else if o.IsIRI() {
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// This other, none, or unknown value is always greater than IRIs
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return false
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}
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// LessThan comparison for the single value or unknown value.
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if !this.IsBcp47() && !o.IsBcp47() {
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// Both are unknowns.
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return false
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} else if this.IsBcp47() && !o.IsBcp47() {
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// Values are always greater than unknown values.
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return false
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} else if !this.IsBcp47() && o.IsBcp47() {
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// Unknowns are always less than known values.
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return true
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} else {
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// Actual comparison.
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return bcp47.LessBcp47(this.Get(), o.Get())
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}
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}
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// Name returns the name of this property: "hreflang".
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func (this HreflangProperty) Name() string {
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return "hreflang"
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}
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// Serialize converts this into an interface representation suitable for
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// marshalling into a text or binary format. Applications should not need this
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// function as most typical use cases serialize types instead of individual
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// properties. It is exposed for alternatives to go-fed implementations to use.
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func (this HreflangProperty) Serialize() (interface{}, error) {
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if this.IsBcp47() {
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return bcp47.SerializeBcp47(this.Get())
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} else if this.IsIRI() {
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return this.iri.String(), nil
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}
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return this.unknown, nil
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}
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// Set sets the value of this property. Calling IsBcp47 afterwards will return
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// true.
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func (this *HreflangProperty) Set(v string) {
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this.Clear()
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this.bcp47Member = v
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this.hasBcp47Member = true
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}
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// SetIRI sets the value of this property. Calling IsIRI afterwards will return
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// true.
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func (this *HreflangProperty) SetIRI(v *url.URL) {
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this.Clear()
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this.iri = v
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}
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