Struct Extensions 

pub struct Extensions(/* private fields */);

Canonical x402 extension envelope.

Maps each extension’s stable identifier (e.g. "bazaar", "payment-identifier") to its ExtensionEntry. The type is #[serde(transparent)] so on the wire it appears as a plain JSON object.

Examples

use r402_core::wire::{Extensions, ExtensionEntry};
use serde_json::json;

let mut ext = Extensions::new();
ext.insert("bazaar", ExtensionEntry::info(json!({"registered": true})));
let rendered = serde_json::to_value(&ext).unwrap();
assert_eq!(rendered["bazaar"]["info"]["registered"], true);

Implementations

impl Extensions

pub fn new() -> Self

Creates an empty extension map.

pub fn is_empty(&self) -> bool

Returns true when no extensions are present.

pub fn len(&self) -> usize

Number of registered extensions.

pub fn get(&self, id: &str) -> Option<&ExtensionEntry>

Looks up an extension by stable ID.

pub fn insert(&mut self, id: impl Into<CompactString>, entry: ExtensionEntry)

Inserts or replaces an extension payload for the given ID.

pub fn remove(&mut self, id: &str) -> Option<ExtensionEntry>

Removes an extension by stable ID, returning the previous value if any.

pub fn iter(&self) -> impl Iterator<Item = (&CompactString, &ExtensionEntry)>

Iterates over (id, entry) pairs.

Trait Implementations

impl Clone for Extensions

fn clone(&self) -> Extensions

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Extensions

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Extensions

fn default() -> Extensions

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Extensions

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Extensions

impl<K, V> FromIterator<(K, V)> for Extensions

where K: Into<CompactString>, V: Into<ExtensionEntry>,

fn from_iter<T: IntoIterator<Item = (K, V)>>(iter: T) -> Self

Creates a value from an iterator.

impl PartialEq for Extensions

fn eq(&self, other: &Extensions) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for Extensions

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Extensions