176 行
5.0 KiB
Go
176 行
5.0 KiB
Go
package propertyhref
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import (
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"fmt"
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anyuri "github.com/go-fed/activity/streams/values/anyURI"
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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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// HrefProperty is the functional property "href". It is permitted to be a single
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// nilable value type.
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type HrefProperty struct {
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anyURIMember *url.URL
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unknown interface{}
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alias string
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}
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// DeserializeHrefProperty creates a "href" property from an interface
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// representation that has been unmarshalled from a text or binary format.
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func DeserializeHrefProperty(m map[string]interface{}, aliasMap map[string]string) (*HrefProperty, 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 := "href"
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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, "href")
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}
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i, ok := m[propName]
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if ok {
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if v, err := anyuri.DeserializeAnyURI(i); err == nil {
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this := &HrefProperty{
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alias: alias,
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anyURIMember: v,
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}
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return this, nil
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}
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this := &HrefProperty{
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alias: alias,
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unknown: i,
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}
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return this, nil
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}
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return nil, nil
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}
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// NewHrefProperty creates a new href property.
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func NewHrefProperty() *HrefProperty {
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return &HrefProperty{alias: ""}
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}
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// Clear ensures no value of this property is set. Calling IsAnyURI afterwards
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// will return false.
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func (this *HrefProperty) Clear() {
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this.unknown = nil
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this.anyURIMember = nil
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}
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// Get returns the value of this property. When IsAnyURI returns false, Get will
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// return any arbitrary value.
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func (this HrefProperty) Get() *url.URL {
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return this.anyURIMember
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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 HrefProperty) GetIRI() *url.URL {
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return this.anyURIMember
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}
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// HasAny returns true if the value or IRI is set.
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func (this HrefProperty) HasAny() bool {
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return this.IsAnyURI()
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}
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// IsAnyURI returns true if this property is set and not an IRI.
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func (this HrefProperty) IsAnyURI() bool {
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return this.anyURIMember != nil
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}
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// IsIRI returns true if this property is an IRI.
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func (this HrefProperty) IsIRI() bool {
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return this.anyURIMember != 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 HrefProperty) 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 HrefProperty) KindIndex() int {
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if this.IsAnyURI() {
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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 HrefProperty) LessThan(o vocab.HrefPropertyInterface) bool {
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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.IsAnyURI() && !o.IsAnyURI() {
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// Both are unknowns.
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return false
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} else if this.IsAnyURI() && !o.IsAnyURI() {
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// Values are always greater than unknown values.
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return false
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} else if !this.IsAnyURI() && o.IsAnyURI() {
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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 anyuri.LessAnyURI(this.Get(), o.Get())
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}
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}
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// Name returns the name of this property: "href".
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func (this HrefProperty) Name() string {
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return "href"
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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 HrefProperty) Serialize() (interface{}, error) {
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if this.IsAnyURI() {
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return anyuri.SerializeAnyURI(this.Get())
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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 IsAnyURI afterwards will return
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// true.
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func (this *HrefProperty) Set(v *url.URL) {
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this.Clear()
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this.anyURIMember = v
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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 *HrefProperty) SetIRI(v *url.URL) {
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this.Clear()
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this.Set(v)
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}
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