mirror of
https://github.com/saymrwulf/curve25519-dalek-source.git
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10e8abf926
This change provides a common convention for using allocator-dependent
features with:
#![cfg(feature = "alloc")]
When available, `Vec` is imported consistently as `prelude::Vec`, which
means modules that need access to `Vec` can simply do:
use prelude::*;
and if an allocator is available, `Vec` will be in the crate prelude.
This allows all `alloc` vs `std` gating to be handled in `lib.rs`,
`build.rs`, and `prelude.rs` so the rest of the codebase doesn't have to
do any gating whatsoever.
38 lines
1.3 KiB
Rust
38 lines
1.3 KiB
Rust
// -*- mode: rust; -*-
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//
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// This file is part of curve25519-dalek.
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// Copyright (c) 2016-2018 Isis Lovecruft, Henry de Valence
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// See LICENSE for licensing information.
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//
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// Authors:
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// - Isis Agora Lovecruft <isis@patternsinthevoid.net>
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// - Henry de Valence <hdevalence@hdevalence.ca>
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//! Pluggable implementations for different architectures.
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//!
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//! The naming of the `u32` and `u64` modules is somewhat unfortunate,
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//! since these are also the names of primitive types. Since types have
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//! a different namespace than modules, this isn't a problem to the
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//! compiler, but it could cause confusion.
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//!
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//! However, it's unlikely that the names of those modules would be
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//! brought into scope directly, instead of used as
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//! `backend::u32::field` or similar. Unfortunately we can't use
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//! `32bit` since identifiers can't start with letters, and the backends
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//! do use `u32`/`u64`, so this seems like a least-bad option.
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#[cfg(not(any(feature = "u32_backend", feature = "u64_backend", feature = "avx2_backend")))]
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compile_error!(
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"no curve25519-dalek backend cargo feature enabled! \
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please enable one of: u32_backend, u64_backend, avx2_backend"
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);
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#[cfg(feature = "u32_backend")]
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pub mod u32;
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#[cfg(feature = "u64_backend")]
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pub mod u64;
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#[cfg(all(feature = "avx2_backend", target_feature = "avx2"))]
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pub mod avx2;
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