X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning-c-bindings%2Fsrc%2Flightning%2Frouting%2Fmod.rs;h=8508d5dde1af4373ee7f8d4bf35bfcf066550d85;hb=7428d63475aee8fa920405fd14eda47113337798;hp=9cc0eb411ac8ab5dc0fc24416c8c775531e48bcb;hpb=5a2c2e157fd16d664a28bf3f7fe58d2216dd43d7;p=ldk-c-bindings

diff --git a/lightning-c-bindings/src/lightning/routing/mod.rs b/lightning-c-bindings/src/lightning/routing/mod.rs
index 9cc0eb4..8508d5d 100644
--- a/lightning-c-bindings/src/lightning/routing/mod.rs
+++ b/lightning-c-bindings/src/lightning/routing/mod.rs
@@ -10,8 +10,62 @@
 
 use std::str::FromStr;
 use std::ffi::c_void;
+use core::convert::Infallible;
 use bitcoin::hashes::Hash;
 use crate::c_types::*;
 
-pub mod router;
 pub mod network_graph;
+pub mod router;
+pub mod scorer;
+/// An interface used to score payment channels for path finding.
+///
+///\tScoring is in terms of fees willing to be paid in order to avoid routing through a channel.
+#[repr(C)]
+pub struct Score {
+	/// An opaque pointer which is passed to your function implementations as an argument.
+	/// This has no meaning in the LDK, and can be NULL or any other value.
+	pub this_arg: *mut c_void,
+	/// Returns the fee in msats willing to be paid to avoid routing through the given channel.
+	#[must_use]
+	pub channel_penalty_msat: extern "C" fn (this_arg: *const c_void, short_channel_id: u64) -> u64,
+	/// Frees any resources associated with this object given its this_arg pointer.
+	/// Does not need to free the outer struct containing function pointers and may be NULL is no resources need to be freed.
+	pub free: Option<extern "C" fn(this_arg: *mut c_void)>,
+}
+unsafe impl Send for Score {}
+unsafe impl Sync for Score {}
+#[no_mangle]
+pub(crate) extern "C" fn Score_clone_fields(orig: &Score) -> Score {
+	Score {
+		this_arg: orig.this_arg,
+		channel_penalty_msat: Clone::clone(&orig.channel_penalty_msat),
+		free: Clone::clone(&orig.free),
+	}
+}
+
+use lightning::routing::Score as rustScore;
+impl rustScore for Score {
+	fn channel_penalty_msat(&self, mut short_channel_id: u64) -> u64 {
+		let mut ret = (self.channel_penalty_msat)(self.this_arg, short_channel_id);
+		ret
+	}
+}
+
+// We're essentially a pointer already, or at least a set of pointers, so allow us to be used
+// directly as a Deref trait in higher-level structs:
+impl std::ops::Deref for Score {
+	type Target = Self;
+	fn deref(&self) -> &Self {
+		self
+	}
+}
+/// Calls the free function if one is set
+#[no_mangle]
+pub extern "C" fn Score_free(this_ptr: Score) { }
+impl Drop for Score {
+	fn drop(&mut self) {
+		if let Some(f) = self.free {
+			f(self.this_arg);
+		}
+	}
+}