Rust macros, while at times useful, are a maintenance nightmare. And
we have been bitten by calling macros from other crates multiple times
in the past.
In a push to just use less macros remove the `debug_from_display`
macro and just write the code.
This is an API breaking change to `internals` but an internal change
only to any of the _real_ crates.
a51768af3f key: Deprecate to_bytes (Tobin C. Harding)
3af3239ad0 script: Re-order functions (Tobin C. Harding)
db40297f87 script: deprecate to_bytes (Tobin C. Harding)
c5cd0db493 Revert the change to to_bytes (Tobin C. Harding)
dc2ca785d2 Add to_vec and deprecate to_bytes for array types (Tobin C. Harding)
a6b7ab32a8 Move impl_array_newtype to internal_macros (Tobin C. Harding)
Pull request description:
Use `to_vec` and deprecate `to_bytes`, the opposite of what we did in #2585.
For functions that return a `Vec` by first allocating use function name `to_vec`. This explicitly excludes:
- Functions that return an array (`CompressedPublicKey::to_bytes`)
- Functions that consume self and return a `Vec` without allocating (`ScriptBuf::into_bytes`)
See #3025 for discussion and consensus.
Close: #3025
ACKs for top commit:
apoelstra:
ACK a51768af3f3d4c8e138e1ded250800810bedc903; successfully ran local tests
Tree-SHA512: ee932c13ad2e09c2b76a7833b23c859df175aa307f56e673921f3ae8b5d865518c6f999749e3b627594457b3ca33301b777177ada3520cf006acc0f14e5dacf8
The current feature gating is wrong, this bug is unreleased because it
was introduced #2585.
The `impl_array_newtype` macro is only used in the `bitcoin` crate, it
does not need to be in `internals`. Also, other crates have an `alloc`
feature which `bitcoin` does not have so if we ever need it in other
places we'll need a duplicate with the correct feature gating anyways.
Move the macro to `bitcoin::internal_macros` and remove the incorrect
`alloc` feature gating.
Currently we feature gate code within the `impl_to_hex_from_lower_hex`
macro on "alloc" but `bitcoin` does not have the "alloc" feature so
this code is never built in. This can be seen by the lack of a
`to_hex` function on `LeafVersion`.
Remove the feature gate from the macro and put it on the individual
call sites as needed.
The example code in macros.rs is much clearer as it is than changing
it to remove the warnings created by adding the warn attribute to the
`lib.rs` file.
The example code was enclosed within a function block and
`#[allow(unused)]` added. And a warn attribute added to `lib.rs`.
The new `impl_to_hex_from_lower_hex` macro causes build warnings when
`internals` is built without the `alloc` feature.
There are two macro implementations depending on feature gates,
improve the docs and duplicate them ont both macro definitions.
30bb93c676 Implement impl_to_hex_from_lower_hex macro for types that implement fmt::LowerHex (Shing Him Ng)
Pull request description:
Created a macro that implements `to_hex` for types that currently have `core::fmt::LowerHex` and called it on types that have `core::fmt::LowerHex` implemented. I put the macro in the `internals` crate since there are types across the whole project that can potentially use this.
Resolves#2869
ACKs for top commit:
Kixunil:
ACK 30bb93c676
apoelstra:
ACK 30bb93c676 successfully ran local tests
Tree-SHA512: d3ebc7b5c0c23f1a8f8eef4379c1b475e8c23845e18ce514cb1e98eb63fc4f215e6bc4425f97c7303053df13374ef931ae9d9373badd7ca1975a55b0d00d0e40
It was correctly pointed out during review of #3215 (when we made
`const_assert` panic) that using a `bool` added no additional
information.
Remove the `bool` and just use unit.
The current `const_assert` macro is unused in the code base. We would
like to use it differently to how it was initially designed, remove the
parenthesis so it can be called directly in a module.
6ba7758b30 Improve array macros (Tobin C. Harding)
Pull request description:
Currently we have two macros used when creating array wrapper types, one is in `internals` and the other in `bitcoin::internal_macros`. It is not immediately obvious what is what and why there are two.
Improve the macros by:
- Move the inherent functions to `impl_array_newtype`
- Use `*_byte_array` for the names instead of `*_bytes`
- Re-name the other macro to match what it now does
ACKs for top commit:
apoelstra:
ACK 6ba7758b30
Tree-SHA512: 36ed0fae0d28f24d29287062eb05bbc1e9e8b565f4ff41fd893503a25404ed8e185a34d75e398a8a660923ffda3b832b6157011598d5a75a5c4aafdffc74af2a
Currently we have two macros used when creating array wrapper types,
one is in `internals` and the other in `bitcoin::internal_macros`. It
is not immediately obvious what is what and why there are two.
Improve the macros by:
- Move the inherent functions to `impl_array_newtype`
- Use `*_byte_array` for the names instead of `*_bytes` for functions
that return arrays
- Add `as_bytes` to return a slice
- Add `to_bytes` to return a vector
- Re-name the other macro to match what it now does
As we did for the `bitcoin` crate, remove attribution from all files in
the `internals` crate.
While we are at it add an SPDX line to the few files missing it, whether
this license nonsense is even needed is left as an argument for another
day.
Justification:
Currently we have a mishmash of attribution lines accompanying the SPDX
identifier. These lines are basically meaningless because:
- The date is often wrong
- The original author attributed is not the only contributor to a file
- The term "rust bitcoin developers" is basically just noise
Just remove all the attribution lines and be done with it.
Various formatting issues have crept into the codebase because we do not
run the formatter in CI.
In preparation for enabling formatting checks in CI run `cargo +nightly
fmt` to fix current formatting issues. No changes other than those
create by the formatter.
This fixes several API bugs:
* Use `TryFrom` instead of `From` for fallible conversions
* Move byte conversion methods from `impl_array_newtype` to
`impl_bytes_newtype`
* Add missing trait impls like `AsRef`, `Borrow`, their mutable versions
and infallible conversions from arrays
Closes#1336
All the types that we define with `impl_array_newtype` are
`Copy` so the correct conversion method to get the underlying byte array
is `to_bytes`. We currently provide `into_bytes` as well as `to_bytes`,
with one of them calling `clone` - this is unnecessary and against
convention.
- Remove `into_bytes` and for `to_bytes` just return the inner field.
- Add a method that causes build to fail if `Copy` is not implemented.
`impl_array_newtype` is an internal macro, move it to a new, ever so
meaningfully named, `macros` module.
Use `#[macro_export]`, no other changes to the macro.
Tobin C. Harding
merge-script
Jamil Lambert, PhD
Shing Him Ng
Fmt Bot
Liam Aharon
Steven Roose
Martin Habovstiak