vendor/tinyvec/gen-array-impls.sh

   1 #!/usr/bin/env bash
   2
   3 gen_impl() {
   4         local len=$1
   5         cat <<-END
   6                 impl<T: Default> Array for [T; $len] {
   7                   type Item = T;
   8                   const CAPACITY: usize = $len;
   9
  10                   #[inline(always)]
  11                   #[must_use]
  12                   fn as_slice(&self) -> &[T] {
  13                     &*self
  14                   }
  15
  16                   #[inline(always)]
  17                   #[must_use]
  18                   fn as_slice_mut(&mut self) -> &mut [T] {
  19                     &mut *self
  20                   }
  21
  22                   #[inline(always)]
  23                   fn default() -> Self {
  24                     [
  25                 $(for ((i = 0; i < $len; i += 6))
  26                 do
  27                         echo -n '     '
  28                         for ((j = 0; j < 6 && j + i < $len; j++))
  29                         do
  30                                 echo -n ' T::default(),'
  31                         done
  32                         echo
  33                 done)
  34                     ]
  35                   }
  36                 }
  37
  38                 END
  39 }
  40
  41 cat <<-END
  42         // Generated file, to regenerate run
  43         //     ./gen-array-impls.sh > src/array/generated_impl.rs
  44         // from the repo root
  45
  46         use super::Array;
  47
  48         $(for ((i = 0; i <= 33; i++)); do gen_impl $i; done)
  49
  50         $(for ((i = 64; i <= 4096; i *= 2)); do gen_impl $i; done)
  51 END
  52
  53 # vim: noet