use std::convert::TryInto; // Bindings need at least rustc 1.34
+use std::io::{Cursor, Read}; // TODO: We should use core2 here when we support no_std
+
+#[repr(C)]
+/// A dummy struct of which an instance must never exist.
+/// This corresponds to the Rust type `Infallible`, or, in unstable rust, `!`
+pub struct NotConstructable {
+ _priv_thing: core::convert::Infallible,
+}
+impl From<core::convert::Infallible> for NotConstructable {
+ fn from(_: core::convert::Infallible) -> Self { unreachable!(); }
+}
+
/// Integer in the range `0..32`
#[derive(PartialEq, Eq, Copy, Clone)]
#[allow(non_camel_case_types)]
pub(crate) fn bitcoin_to_C_outpoint(outpoint: ::bitcoin::blockdata::transaction::OutPoint) -> crate::lightning::chain::transaction::OutPoint {
crate::lightning::chain::transaction::OutPoint_new(ThirtyTwoBytes { data: outpoint.txid.into_inner() }, outpoint.vout.try_into().unwrap())
}
+pub(crate) fn C_to_bitcoin_outpoint(outpoint: crate::lightning::chain::transaction::OutPoint) -> ::bitcoin::blockdata::transaction::OutPoint {
+ unsafe {
+ ::bitcoin::blockdata::transaction::OutPoint {
+ txid: (*outpoint.inner).txid, vout: (*outpoint.inner).index as u32
+ }
+ }
+}
#[repr(C)]
#[derive(Clone)]
if self.datalen == 0 { return &[]; }
unsafe { std::slice::from_raw_parts(self.data, self.datalen) }
}
+ pub(crate) fn to_reader<'a>(&'a self) -> Cursor<&'a [u8]> {
+ let sl = self.to_slice();
+ Cursor::new(sl)
+ }
+ pub(crate) fn from_vec(v: &derived::CVec_u8Z) -> u8slice {
+ Self::from_slice(v.as_slice())
+ }
+}
+pub(crate) fn reader_to_vec<R: Read>(r: &mut R) -> derived::CVec_u8Z {
+ let mut res = Vec::new();
+ r.read_to_end(&mut res).unwrap();
+ derived::CVec_u8Z::from(res)
}
#[repr(C)]
pub(crate) fn deserialize_obj<I: lightning::util::ser::Readable>(s: u8slice) -> Result<I, lightning::ln::msgs::DecodeError> {
I::read(&mut s.to_slice())
}
+pub(crate) fn maybe_deserialize_obj<I: lightning::util::ser::MaybeReadable>(s: u8slice) -> Result<Option<I>, lightning::ln::msgs::DecodeError> {
+ I::read(&mut s.to_slice())
+}
pub(crate) fn deserialize_obj_arg<A, I: lightning::util::ser::ReadableArgs<A>>(s: u8slice, args: A) -> Result<I, lightning::ln::msgs::DecodeError> {
I::read(&mut s.to_slice(), args)
}
#[repr(C)]
-#[derive(Clone)]
/// A Rust str object, ie a reference to a UTF8-valid string.
/// This is *not* null-terminated so cannot be used directly as a C string!
pub struct Str {
Str { chars: self.as_ptr(), len: self.len(), chars_is_owned: false }
}
}
+impl Into<Str> for &mut &'static str {
+ fn into(self) -> Str {
+ let us: &'static str = *self;
+ us.into()
+ }
+}
+
impl Str {
pub(crate) fn into_str(&self) -> &'static str {
if self.len == 0 { return ""; }
Str { chars: s.as_ptr(), len: s.len(), chars_is_owned: true }
}
}
+impl Clone for Str {
+ fn clone(&self) -> Self {
+ self.into_str().clone().into()
+ }
+}
impl Drop for Str {
fn drop(&mut self) {
}
}
}
+
+pub(crate) struct SmartPtr<T> {
+ ptr: *mut T,
+}
+impl<T> SmartPtr<T> {
+ pub(crate) fn from_obj(o: T) -> Self {
+ Self { ptr: Box::into_raw(Box::new(o)) }
+ }
+ pub(crate) fn null() -> Self {
+ Self { ptr: std::ptr::null_mut() }
+ }
+}
+impl<T> Drop for SmartPtr<T> {
+ fn drop(&mut self) {
+ if self.ptr != std::ptr::null_mut() {
+ unsafe { Box::from_raw(self.ptr); }
+ }
+ }
+}
+impl<T> std::ops::Deref for SmartPtr<T> {
+ type Target = *mut T;
+ fn deref(&self) -> &*mut T {
+ &self.ptr
+ }
+}