_ Git - rust-lightning/blob - lightning/src/util/ser_macros.rs

   1 macro_rules! impl_writeable {
   2         ($st:ident, $len: expr, {$($field:ident),*}) => {
   3                 impl ::util::ser::Writeable for $st {
   4                         fn write<W: ::util::ser::Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
   5                                 if $len != 0 {
   6                                         w.size_hint($len);
   7                                 }
   8                                 $( self.$field.write(w)?; )*
   9                                 Ok(())
  10                         }
  11                 }
  12
  13                 impl<R: ::std::io::Read> ::util::ser::Readable<R> for $st {
  14                         fn read(r: &mut R) -> Result<Self, ::ln::msgs::DecodeError> {
  15                                 Ok(Self {
  16                                         $($field: ::util::ser::Readable::read(r)?),*
  17                                 })
  18                         }
  19                 }
  20         }
  21 }
  22 macro_rules! impl_writeable_len_match {
  23         ($st:ident, {$({$m: pat, $l: expr}),*}, {$($field:ident),*}) => {
  24                 impl Writeable for $st {
  25                         fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
  26                                 w.size_hint(match *self {
  27                                         $($m => $l,)*
  28                                 });
  29                                 $( self.$field.write(w)?; )*
  30                                 Ok(())
  31                         }
  32                 }
  33
  34                 impl<R: ::std::io::Read> Readable<R> for $st {
  35                         fn read(r: &mut R) -> Result<Self, DecodeError> {
  36                                 Ok(Self {
  37                                         $($field: Readable::read(r)?),*
  38                                 })
  39                         }
  40                 }
  41         }
  42 }