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#[allow(unused_imports, clippy::wildcard_imports)]
use super::*;
/// StellarValue is a borrowing equivalent of [`StellarValue`](super::super::StellarValue)
/// over `'static` data, for const XDR encoding.
#[derive(Clone, Debug, Hash, PartialEq, Eq, PartialOrd, Ord)]
#[cfg_attr(feature = "arbitrary", derive(Arbitrary))]
pub struct StellarValue {
pub tx_set_hash: Hash,
pub close_time: TimePoint,
pub upgrades: VecM<UpgradeType, 6>,
pub ext: StellarValueExt,
}
impl StellarValue {
/// The exact XDR-encoded length of this value, in bytes.
///
/// Evaluable in a const context, so a caller (such as a proc-macro) can
/// size a buffer for [`Self::const_to_xdr`] at compile time.
#[must_use]
pub const fn const_xdr_len(&self) -> usize {
let mut empty: [u8; 0] = [];
let mut w = ConstWriter::new(&mut empty);
w.write_type_stellar_value(self);
w.len()
}
/// Serialize this value as XDR into a fixed-size `[u8; N]` using only const
/// operations. This is the const counterpart to
/// [`WriteXdr::to_xdr`](super::super::WriteXdr::to_xdr).
///
/// `N` must equal [`Self::const_xdr_len`]. It is intended for callers, such
/// as a proc-macro, that compute the length with `const_xdr_len` and pass
/// it as `N`; `const_to_xdr` itself does not need to call `const_xdr_len`.
///
/// # Panics
///
/// Panics if `N` does not equal the value's [`Self::const_xdr_len`].
#[must_use]
pub const fn const_to_xdr<const N: usize>(&self) -> [u8; N] {
let mut buf = [0u8; N];
let mut w = ConstWriter::new(&mut buf);
w.write_type_stellar_value(self);
assert!(
w.len() == N,
"const_to_xdr: N does not equal the XDR-encoded length"
);
buf
}
}
impl ConstWriter<'_> {
/// Serializes a [`StellarValue`], mirroring `<StellarValue as WriteXdr>::write_xdr`.
pub const fn write_type_stellar_value(&mut self, v: &StellarValue) {
self.write_type_hash(&v.tx_set_hash);
self.write_type_time_point(&v.close_time);
self.write_type_vec_upgrade_type(&v.upgrades);
self.write_type_stellar_value_ext(&v.ext);
}
}