Currently we use the `Uint256` type to represent two proof of work
integers, namely target and difficulty (work).
It would be nice to not have a public integer type that is not fully
implemented (i.e., does not implement arithmetic etc as do integer types
in stdlib). Instead of implementing all the stdlib functions we can
instead add two new wrapper types, since these are not general purpose
integers they do not need to implement anything we do not need to use.
- Add a `pow` module.
- Put a modified version of `Uint256` to `pow`.
- Add two new wrapper types `Target` and `Difficulty`.
- Only implement methods that we use on each type.
Note this patch does not remove the original `Uint256`, that will be
done as a separate patch.
b79c178ea8 Add fuzz test for PrefilledTransaction (Tobin Harding)
Pull request description:
Add a simple deserialization fuzz test for `PrefilledTransaction`.
Fixes: #460 (I think, I'm not sure if any of the other types need fuzzing?)
ACKs for top commit:
apoelstra:
ACK b79c178ea8
Kixunil:
ACK b79c178ea8
Tree-SHA512: 3e5cbda6b17c36f414bce05b562b5648d82433b185853e6c8aa33ec491b58e527626eb09caca2a988120329efd92dfd3aaad60ef99746d6ac41555160efeb9d6
The identifier 'util' does not convey any information. We have a whole
bunch of modules inside the `util` module.
As part of work to reduce the amount of arbitrary things in the `util`
module move the `address` module to the crate root level.
Modify from_script functions to return result instead of option so that, in case of errors, there is more
information on what went wrong.
Resolves: #1022
In an earlier version of the uint128 fuzz target, there was a byte
which incidated the specific operation to test. However, that was
dropped for the much-more-effective approach of simply testing all
operations in each fuzz iteration.
- Rename the `iter` method to `instructions`.
- Add `instructions_minimal` for minimal-enforced iteration.
- Iterator has `Result<Instruction, Error>` as items.
- Move network::encodable::* to consensus::encode::*
- Rename Consensus{En,De}codable to {En,De}codable (now under
consensus::encode)
- Move network::serialize::Error to consensus::encode::Error
- Remove Raw{En,De}coder, implement {En,De}coder for T: {Write,Read}
instead
- Move network::serialize::Simple{En,De}coder to
consensus::encode::{En,De}coder
- Rename util::Error::Serialize to util::Error::Encode
- Modify comments to refer to new names
- Modify files to refer to new names
- Expose {En,De}cod{able,er}, {de,}serialize, Params
- Do not return Result for serialize{,_hex} as serializing to a Vec
should never fail
- Separate serialize::Error and network::Error from util::Error
- Remove unneeded propagate_err and consume_err
- Change fuzzing code to ignore Err type
Tobin C. Harding
Andrew Poelstra
eunoia_1729
Riccardo Casatta
Martin Habovstiak
Matt Corallo
Elichai Turkel
Dr Maxim Orlovsky
Steven Roose
Riccardo Casatta
Carl Dong
Jean Pierre Dudey