Use alloc for no_std builds

[rust-lightning] / lightning / src / ln / features.rs

diff --git a/lightning/src/ln/features.rs b/lightning/src/ln/features.rs
index 507316d6b3b4612d1f9d5725e85dea956a87271b..b459baf06580bff8414715b82c1845e7334c23ee 100644 (file)
--- a/lightning/src/ln/features.rs
+++ b/lightning/src/ln/features.rs
@@ -22,8 +22,9 @@
 //! [BOLT #9]: https://github.com/lightningnetwork/lightning-rfc/blob/master/09-features.md
 //! [messages]: crate::ln::msgs
 
-use std::{cmp, fmt};
-use std::marker::PhantomData;
+use prelude::*;
+use core::{cmp, fmt};
+use core::marker::PhantomData;
 
 use bitcoin::bech32;
 use bitcoin::bech32::{Base32Len, FromBase32, ToBase32, u5, WriteBase32};
@@ -31,6 +32,7 @@ use ln::msgs::DecodeError;
 use util::ser::{Readable, Writeable, Writer};
 
 mod sealed {
+       use prelude::*;
        use ln::features::Features;
 
        /// The context in which [`Features`] are applicable. Defines which features are required and
@@ -646,11 +648,8 @@ impl<T: sealed::PaymentSecret> Features<T> {
        pub(crate) fn requires_payment_secret(&self) -> bool {
                <T as sealed::PaymentSecret>::requires_feature(&self.flags)
        }
-       // Note that we never need to test this since what really matters is the invoice - iff the
-       // invoice provides a payment_secret, we assume that we can use it (ie that the recipient
-       // supports payment_secret).
-       #[allow(dead_code)]
-       pub(crate) fn supports_payment_secret(&self) -> bool {
+       /// Returns whether the `payment_secret` feature is supported.
+       pub fn supports_payment_secret(&self) -> bool {
                <T as sealed::PaymentSecret>::supports_feature(&self.flags)
        }
 }
@@ -730,8 +729,10 @@ mod tests {
 
                assert!(InitFeatures::known().supports_variable_length_onion());
                assert!(NodeFeatures::known().supports_variable_length_onion());
+               assert!(InvoiceFeatures::known().supports_variable_length_onion());
                assert!(InitFeatures::known().requires_variable_length_onion());
                assert!(NodeFeatures::known().requires_variable_length_onion());
+               assert!(InvoiceFeatures::known().requires_variable_length_onion());
 
                assert!(InitFeatures::known().supports_static_remote_key());
                assert!(NodeFeatures::known().supports_static_remote_key());
@@ -740,13 +741,17 @@ mod tests {
 
                assert!(InitFeatures::known().supports_payment_secret());
                assert!(NodeFeatures::known().supports_payment_secret());
+               assert!(InvoiceFeatures::known().supports_payment_secret());
                assert!(InitFeatures::known().requires_payment_secret());
                assert!(NodeFeatures::known().requires_payment_secret());
+               assert!(InvoiceFeatures::known().requires_payment_secret());
 
                assert!(InitFeatures::known().supports_basic_mpp());
                assert!(NodeFeatures::known().supports_basic_mpp());
+               assert!(InvoiceFeatures::known().supports_basic_mpp());
                assert!(!InitFeatures::known().requires_basic_mpp());
                assert!(!NodeFeatures::known().requires_basic_mpp());
+               assert!(!InvoiceFeatures::known().requires_basic_mpp());
 
                assert!(InitFeatures::known().supports_shutdown_anysegwit());
                assert!(NodeFeatures::known().supports_shutdown_anysegwit());