On our way to v1.0.0 we are defining a standard for our error types,
this includes:
- Uses the following derives (unless not possible, usually because of `io::Error`)
`#[derive(Debug, Clone, PartialEq, Eq)]`
- Has `non_exhaustive` unless we really know we can commit to not adding
anything.
Furthermore, we are trying to make the codebase easy to read. Error code
is write-once-read-many (well it should be) so if we make all the error
code super uniform the users can flick to an error and quickly see what
it includes. In an effort to achieve this I have made up a style and
over recent times have change much of the error code to that new style,
this PR audits _all_ error types in the code base and enforces the
style, specifically:
- Is layed out: definition, [impl block], Display impl, error::Error impl, From impls
- `error::Error` impl matches on enum even if it returns `None` for all variants
- Display/Error impls import enum variants locally
- match uses *self and `ref e`
- error::Error variants that return `Some` come first, `None` after
Re: non_exhaustive
To make dev and review easier I have added `non_exhaustive` to _every_
error type. We can then remove it error by error as we see fit. This is
because it takes a bit of thinking to do and review where as this patch
should not take much brain power to review.
In a further effort to make the code brain-dead easy to read; use an
explicit implementation of `std::error::Error` that returns `None`
instead of relying on the default trait implementation.
Recently we introduced a bug in the weight/size code, while
investigating I found that our `Transaction`/`Block` weight/size APIs
were in a total mess because:
- The docs were stale
- The concept of weight (weight units) and size (bytes) were mixed up
I audited all the API functions, read some bips (141, 144) and re-wrote
the API with the following goals:
- Use terminology from the bips
- Use abstractions that mirror the bips where possible
As part of an ongoing effort to make our error types stable and useful
add a stand set of derives to all error types in the library.
`#[derive(Debug, Clone, PartialEq, Eq)]`
Add `Copy` if possible and the error type does not include
`#[non_exhaustive]`.
If an error type includes `io::Error` it only gets `#[derive(Debug)]`.
Our previous MSRV did not support MIN/MAX associated consts so we had
methods min/max_value. Now that our MSRV is Rust 1.48.0 we can use the
consts.
Deprecate min/max_value methods in favor of MIN/MAX associated conts.
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. 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.
fabcde036f Use package in manifest and shorten import (Tobin C. Harding)
Pull request description:
We can use `package` to rename `bitcoin_hashes` to `hashes` and `bitcoin_internals` to `internals`. This makes imports more terse with no loss of meaning.
ACKs for top commit:
apoelstra:
ACK fabcde036f
Kixunil:
ACK fabcde036f
Tree-SHA512: bc5bff6f7f6bf3b68ba1e0644a83da014081d8c6c9d578c21cb54fdd56a018f68733dd1135d05b590ba193ed9efd12fa9019182c1fed347e604d8548f6ef9103
We've upgraded MSRV but didn't update clippy config, so some things that
could be improved aren't caught by clippy. This updates the config and
fixes the new issues.
I also `rg '1\.41\.1'`ed for interesting changes and found one
additional improvement.
If we use `#![cfg_attr(docsrs, feature(doc_auto_cfg))]` instead of
`#![cfg_attr(docsrs, feature(doc_cfg))]` we no longer need to manually
mark types with `#[cfg_attr(docsrs, doc(cfg(feature = "std")))]`.
Sweeeeeet.
We can use `package` to rename `bitcoin_hashes` to `hashes` and
`bitcoin_internals` to `internals`. This makes imports more terse with
no loss of meaning.
090dad770f Improve string parsing (Tobin C. Harding)
Pull request description:
Currently we implement string parsing for height/time from the `absolute` module but not the `relative` module.
Improve the macros used to implement string parsing and use the new versions to implement string parsing for the height and time types in `relative`.
Done while reviewing data structures in relation to `serde`.
ACKs for top commit:
apoelstra:
ACK 090dad770f
Kixunil:
ACK 090dad770f
Tree-SHA512: bfa88efbaf5dc35755eb46df373a08e223f112860e8a65f58db9fdd77e2c01dc9377da735b33ef58940004fe5fe11690ac09be19591fded2c9fd04cd7d2bdf73
An absolute lock time of 100 is nonsensical because we are well past
block 100. This value was used because it makes sense for _relative_
locktimes but for absolute lock times it makes the examples and tests
slightly confusing.
Currently we implement string parsing for height/time from the
`absolute` module but not the `relative` module.
Improve the macros used to implement string parsing and use the new
versions to implement string parsing for the height and time types in
`relative`.
The `max_value` and `min_value` functions only exist to be
compatible/uniform with Rust 1.41.1 they will never change and they just
return a constant value. They can therefore be made const functions.
Some of the lock time structs (`Height`, `Time` ect.) are missing
standard constants for min, max ect.
Add standard constants taking into consideration the various locktime
corner cases.
Add `max_value` and `min_value` to be consistent with Rust 1.41.1 (incl.
`Sequence`).
Fix: #1451
The additional `use` items were added to improve the style of
documentation. Because they were only used for doc they were `cfg`ed.
But because this is independent from being built by `docs.rs` the `cfg`
should've been `doc` not `docsrs`.
IOW `docsrs` means roughly `all(doc, nightly)` and the added items are
unrelated to `nightly`.
Add `#[inline]` to all public functions/methods excluding error types
and `Display` impls. Error paths do not need to be fast and presumably
`Display` is called on code paths that do IO so this also does not need
to be fast.
This can be replicated by deleting the `type PackedLockTime = LockTime'
line, and then running
find . -type f | xargs sed -i 's/PackedLockTime/LockTime/g
at the root of the repo.
Adds new module `string` to be later converted to its own
crate. The module currently contains the FromHexStr trait and an error
type to be used for implementing hex parsing on types. This change
also adds implementations of FromHexStr for types with a single u32
member such as `Sequence(pub u32)`. All structs that match the
following regex have been given this implementation
`\(u32\)` and `\(pub u32\)`. All implementations have associated
unit tests matching all possible cases. NonStandardSighashType has
been ommitted from this change as it is an error and should not be
constructed using the methods added in this change.
Adds parse::hex_u32 for future use to be made generic to allow
different sizes of integers to be parsed from hex strings.
The error type FromHexError implements required traits such as
Display and std::error::Error
The lock time methods are a source of endless confusion; make an attempt
at improving further the documentation on the two `is_implied_by`
methods (one on absolute lock time and one on relative).
As we just did for `absolute::LockTime` add a method `is_implied_by` and
deprecate `is_satisfied_by_lock`.
Reasoning: it is odd to think of a lock satisfying another lock but it
is clear to see that satisfaction of one lock can imply satisfaction of
another.
When filtering it is necessary to check two lock times against each
other, we currently provide a patter for doing so in the docs but we can
do better.
It was observed that satisfaction of a lock time 'implies' satisfaction
of another lock time if the lock times are the same unit and one locks
value is less than the others - this is exactly the code pattern we
suggest for filtering.
Add a method on `absolute::LockTime` for checking a lock against another
lock, add rustdoc comment explaining the methods function in filtering
prospective lock time values (how we use it in `rust-miniscript`).
Currently in one of the rustdoc examples showing lock satisfaction we
use two locks with the same value, this obfuscates which lock is doing
the satisfying and which lock is being satisfied.
Increment the value in one of the locks so it is obvious which lock is
which.
Add a new crate `bitcoin-internals` to be used for internal code needed
by multiple soon-to-be-created crates.
Add the `write_err` macro to `bitcoin-internals`, nothing else.
This patch uses a `path` dependency which means `rust-bitcoin` cannot be
released in its current state, will need to be changed once we release
the `bitcoin-internals` crate on `crates.io`.
Create a directory `bitcoin` and move into it the following as is with
no code changes:
- src
- Cargo.toml
- contrib
- test_data
- examples
Then do:
- Add a workspace to the repository root directory.
- Add the newly created `bitcoin` crate to the workspace.
- Exclude `fuzz` and `embedded` crates from the workspace.
- Add a contrib/test.sh script that runs contrib/test.sh in each
sub-crate
- Fix the bitcoin/contrib/test.sh script
Tobin C. Harding
Steven Roose
Subhradeep Chakraborty
Andrew Poelstra
Martin Habovstiak
connormullett