Commit Graph

55 Commits

Author SHA1 Message Date
Andrew Poelstra 01d5129d79
Merge rust-bitcoin/rust-bitcoin#1293: Move a bunch of stuff out of `internal_macros`
7d851b42ee Move serde_string_* macros to the serde_utils module (Tobin C. Harding)
53b681b838 Move const_assert to bitcoin_internals (Tobin C. Harding)
5a8a5ff6c9 Move debug_from_display to bitcoin_internals (Tobin C. Harding)
a2f08f2bc6 Improve docs on impl_array_newtype macro (Tobin C. Harding)
771cdde282 Move impl_array_newtype to bitcoin_internals (Tobin C. Harding)

Pull request description:

  Move macros out of `internal_macros`, done in an effort to work towards removing the `internal_macros` module since we have `bitcoin_internals` now.

ACKs for top commit:
  apoelstra:
    ACK 7d851b42ee
  Kixunil:
    ACK 7d851b42ee

Tree-SHA512: b31b3a5b4d18a2dbe3f358bff62ae6ca4041d432c755e9c45b0241d48903e02c95e79ec72a7478b9d2a53486ce9eef19bfe3b8905aba19036e59c0719f193ce7
2022-10-21 22:07:44 +00:00
Andrew Poelstra c5277a8ed7
Merge rust-bitcoin/rust-bitcoin#1331: add some comments to `Transaction::weight`
17f0d29d08 add some comments to `Transaction::weight` (Andrew Poelstra)

Pull request description:

  FIxes #1159

ACKs for top commit:
  tcharding:
    ACK 17f0d29d08

Tree-SHA512: ddef69377a7208dfa2794c09f418fb98820b9fc55a32a29f26cd4fc3126bbc8e6c4085e679601330e1225a8404c6eb2b19c6bf374e327cced343197c631b4930
2022-10-21 14:29:47 +00:00
Andrew Poelstra 17f0d29d08
add some comments to `Transaction::weight`
FIxes #1159
2022-10-20 15:24:17 +00:00
Tobin C. Harding 7d851b42ee Move serde_string_* macros to the serde_utils module
In preparation for emptying the `internal_macros` module move the
`serde_string_impl` and `serde_struct_human_string_imp` macros to the
`serde_utils` module.

Rationale: `internal_macros` stuff can go over in the `internals` crate
now that we have one. The serde macros could go over there but we have a
`serde_utils` module that holds code for implementing serde traits,
these two macros are exactly that.
2022-10-20 06:15:57 +11:00
Tobin C. Harding 53b681b838 Move const_assert to bitcoin_internals
This is an internal macro, now that we have the `internals` crate put
`const_assert` in it.
2022-10-20 06:15:44 +11:00
Tobin C. Harding 5a8a5ff6c9 Move debug_from_display to bitcoin_internals
This is an internal macro, now that we have the `internals` crate put
`debug_from_display` in it.
2022-10-20 06:15:23 +11:00
Tobin C. Harding 771cdde282 Move impl_array_newtype to bitcoin_internals
`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.
2022-10-20 06:14:59 +11:00
Tobin C. Harding dd8730e14f Use new PSBT signing API in example
We have a PSBT example that includes a custom signing module, we can
remove that now and use the new PSBT signing API.
2022-10-20 06:07:53 +11:00
Tobin C. Harding d2367fb187 Add PSBT sign functionality
Signing a PSBT requires no knowledge other than what we have here in
this library and the PSBT ready to be signed.

This code was pulled out of `rust-miniscript`.

Add a `sign` method to the `PartiallySignedTransaction`.
2022-10-20 06:07:35 +11:00
Tobin C. Harding b80e5aeaab Re-order import statements
The import statements in `psbt/mod.rs` are a bit of a mess, re-order
them in an attempt to group like things and separate out things that are
different (e.g. `pub use` from `use`).

Refactor only, no logic changes.
2022-10-20 05:59:43 +11:00
Andrew Poelstra 938b61bf66
Merge rust-bitcoin/rust-bitcoin#1210: Move bip152 module to crate root
4057c26829 Run formmater on bip152 (Tobin C. Harding)
facd8ba556 Move bip152 module to crate root (Tobin C. Harding)

Pull request description:

  We are attempting to flatten the `util` module.

  Move the `bip152` module to the crate root out of `util`.

  Currently `src/util/` is ignored by the formatter so this move requires `bip152` module to be formatted. Formatting is done as a separate patch so reviewers can run `cargo +nightly fmt` and compare the diffs if so desired.

ACKs for top commit:
  apoelstra:
    ACK 4057c26829
  sanket1729:
    code review ACK 4057c26829

Tree-SHA512: 889d78817f60b8d038d631059432b37940e97299b9fd3f0055b2ede61b5f87cce4824ac0be239fc3897ff6da8068749c8504aa0714aab35cc0faf519606771bf
2022-10-19 12:32:41 +00:00
Tobin C. Harding 4057c26829 Run formmater on bip152
Run the formmater on the newly moved `bip152` module. No changes other
than those introduced by `cargo +nightly fmt`.
2022-10-19 06:41:10 +11:00
Tobin C. Harding facd8ba556 Move bip152 module to crate root
We are attempting to flatten the `util` module; move the `bip152` module
to the crate root out of `util`.

Currently `src/util/` is ignored by the formatter so this move causes
the `bip152` module to be formatted.
2022-10-19 06:40:33 +11:00
Andrew Poelstra e10aa552f6
Merge rust-bitcoin/rust-bitcoin#1314: Return custom error from `Network::from_str`
d1b7dff094 return custom error from `Network::from_str` (Noah)

Pull request description:

  Fix #1292

  Had some time so got this out of the way.

ACKs for top commit:
  apoelstra:
    ACK d1b7dff094
  tcharding:
    ACK d1b7dff094

Tree-SHA512: f6566f4df74c697cc3d84eca4e4c45bb5da9e86fe32e5f6e257a3e8c3e22fc375f5f307c7f96edd4536a80c1d1c13535f6073a1a093911468abb015040c2888b
2022-10-18 19:31:19 +00:00
Andrew Poelstra 121db506fa
Merge rust-bitcoin/rust-bitcoin#1197: Add `Target` and `Work` types
02a2b43b2b Remove Default impl for Target and Work (Tobin C. Harding)
cb9893c4a9 Add Target and Difficulty types (Tobin C. Harding)

Pull request description:

  Ugh! 1600 lines of green and 1100 of red - my apologies.

  Currently we use the `Uint256` type for proof-of-work calculations. It was observed in #1181 that providing a public 256 bit integer type like this implies that it is a general  purpose integer type. We do not want to provide a general purpose integer type (see the 1000 arithmetic functions on stdlib integer types for why not :)

  Add two new opaque integer types `Target` and `Work`. These are the inverse of each other, both conceptually and mathematically.

  There is a lot of code in this PR, sorry about that. At a high level the PR does:

  - Add a `pow` module.
  - Put a modified version of  `Uint256` in `pow`, making it private.
  - Add two new wrapper types `Target` and `Work` that provide a very limited API specific to their use case. In particular there are methods on each to convert to the other.
  - Only implement methods that we use on each type.

  ### Note

  During development I got mixed up with the word "difficulty", I have discovered this has a very specific meaning in Bitcoin. Please see rustdocs on the `Target::difficulty` function for explanation of this term. For this reason we use the type `Work` defined as the inverse of target, and reserve "difficulty" for the Bitcoin concept.

ACKs for top commit:
  apoelstra:
    ACK 02a2b43b2b
  Kixunil:
    ACK 02a2b43b2b

Tree-SHA512: 4d701756a42b832f03b8d542f3a5278b4ca1d5983ffd7d4630577ebd4cc8f47029719f9018185e01fa459d8fb32426b5cb4d6b8d8b588ebbb7b65e4aeee94412
2022-10-17 18:24:11 +00:00
Riccardo Casatta 13e9a133df
fix test_data dir exclusion
As specified in the doc:

`foo/` matches any directory with the name `foo` anywhere in the package.
2022-10-11 12:18:37 +02:00
Noah d1b7dff094 return custom error from `Network::from_str` 2022-10-10 19:37:14 +11:00
Casey Rodarmor 2bae74688e Add `Script::builder` convenience function 2022-10-07 15:37:56 -07:00
Tobin C. Harding 02a2b43b2b Remove Default impl for Target and Work
A zero default value for `Target` and `Work` has no significance and/or
usecase, remove the derived `Default` implementation.

Includes making `Target::ZERO` public.
2022-09-30 12:02:06 +10:00
Andrew Poelstra f6d838076e
Merge rust-bitcoin/rust-bitcoin#1301: `AsMut` impls for `Magic`
bfb4977be9 implement `AsMut<[u8]>` and `AsMut<[u8;4]>` for `Magic` (Noah)

Pull request description:

  Follow up to https://github.com/rust-bitcoin/rust-bitcoin/pull/1288#discussion_r982152738

  Implemented `AsMut<[u8]>` and `AsMut<[u8;4]>` for `Magic`.

ACKs for top commit:
  Kixunil:
    ACK bfb4977be9
  apoelstra:
    ACK bfb4977be9

Tree-SHA512: f1732f2b6db285e64baf07e70917eb8c0938b3a8d11f8266c0f2c846b7b2d4447cb99721b55c9db877f88c398dd74477c41bdae34679b6c3b6ade71455538241
2022-09-29 13:31:56 +00:00
Noah bfb4977be9 implement `AsMut<[u8]>` and `AsMut<[u8;4]>` for `Magic` 2022-09-29 16:04:37 +10:00
Andrew Poelstra 1286bcebb5
Merge rust-bitcoin/rust-bitcoin#1288: New type network magic
6e5e8d80a6 add error implementations for `ParseMagicError` and `UnknownMagic` (Noah)
a79c69894a new type network magic (Noah)

Pull request description:

  #1266

  Added a new type `Magic` for network magic.

ACKs for top commit:
  Kixunil:
    ACK 6e5e8d80a6
  apoelstra:
    ACK 6e5e8d80a6

Tree-SHA512: a67703e497af0e317f03d5cd4efca9ed6878c252a68aefa56592bfcac2946e8f62f1ae746de8a20344d846ec5623997acffe8a04b81b4faa25e579bebcd95f90
2022-09-28 18:07:03 +00:00
Noah 6e5e8d80a6 add error implementations for `ParseMagicError` and `UnknownMagic` 2022-09-28 19:43:10 +10:00
Noah a79c69894a new type network magic 2022-09-28 10:32:47 +10:00
Tobin C. Harding cb9893c4a9 Add Target and Difficulty types
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.
2022-09-28 04:16:59 +10:00
Andrew Poelstra 7228d1fc14
Merge rust-bitcoin/rust-bitcoin#1299: Fix clippy warnings
f5412e2aa2 Fix clippy warnings (Tobin C. Harding)

Pull request description:

  Clippy recently upgraded and a few two new warnings types popped up in our codebase, fix them both in a single patch so CI passes for all commits.

  1. Remove unneeded explicit borrow
  2. Use `if let Some` instead of pattern match

ACKs for top commit:
  apoelstra:
    ACK f5412e2aa2
  Kixunil:
    ACK f5412e2aa2

Tree-SHA512: 1faeb6173061e28a1acfe1a37a669982abbd832b327448e31648c447a7d043841edf30349700ff9da9dd330cfa6d497d188534daab825069e4489653e25987ca
2022-09-26 19:18:25 +00:00
Tobin C. Harding f5412e2aa2 Fix clippy warnings
Clippy recently upgraded and a few two new warnings types popped up in
our codebase, fix them both in a single patch so CI passes for all
commits.

1. Remove unneeded explicit borrow
2. Use `if let Some` instead of pattern match
2022-09-26 17:00:12 +10:00
Andrew Poelstra 3b05c7ffef
Merge rust-bitcoin/rust-bitcoin#1259: Move/re-name the `util::misc` module
e24c91e9ca sign_message: Run cargo fmt (Tobin C. Harding)
041d6a8097 Move and deprecate script_find_and_remove (Tobin C. Harding)

Pull request description:

  Done as part of [flattening util](https://github.com/rust-bitcoin/rust-bitcoin/issues/639).

  Move some code out of `misc` then re-name the module to `signature` and move it to the crate root.

  - Patch 1: Move a single public function, needs review that destination module is ok. I did consider re-naming the function to remove `script_` prefix but decided to leave it as is.
  - Patch 2: Re-names `misc` -> `signature` and puts it in the crate root
  - Patch 3: Runs the formatter on `signature` module

  All changes include deprecated re-exports.

ACKs for top commit:
  apoelstra:
    ACK e24c91e9ca
  Kixunil:
    ACK e24c91e9ca

Tree-SHA512: 37efc69595cbacd75c27f8fa6edd6bc168c04f1cdd230b49ab97f8a07e5b25ea87c00de017b315987bfe84d1b652a2c301c8f0132e4da988af1d15b687b47333
2022-09-24 13:05:33 +00:00
Andrew Poelstra 6101d8d31a
Merge rust-bitcoin/rust-bitcoin#1277: Try to fix up sighash export mess
2001f44e46 Try to fix up sighash export mess (Tobin C. Harding)

Pull request description:

  Recently we moved a few types from `transaction` to `sighash`, while doing so I erroneously annotated code with the `deprecated` attribute hoping it would give downstream users a gentle upgrade experience. It turns out `deprecated` only works on functions.

  During that same work, we re-exported from the crate root a bunch of types from the `sighash` module that probably should not have been re-exported. We are currently trying to create a nice clean API surface, in an effort to move in the right direction we should remove the re-exports and just re-export the `sighash` module.

  Try to clean up the sighash export mess by doing:

  - Remove the re-exports from the `transaction` module
  - Remove crate level re-exports of `sighash` module types
  - Re-export `sighash` module

  Note, this patch is a breaking API change, justified by the fact that there is no good way to gently lead downstream when moving types since types cannot be deprecated with the `deprecated` attribute.

ACKs for top commit:
  apoelstra:
    ACK 2001f44e46
  Kixunil:
    ACK 2001f44e46

Tree-SHA512: 42a08bc15bacd4cf7c3fec002ddb29afe5b1be3c4eb74fbd8c63a9333c0d45cbc8493027532f5db6a3930d49b1e83048826371e0ed7d4ac3dc611e5885540bce
2022-09-24 13:04:42 +00:00
Andrew Poelstra b1869803bf
Merge rust-bitcoin/rust-bitcoin#1208: Move bip32 module to crate root
8bed2ddffe Run formmater on bip32 (Tobin C. Harding)
34113c9558 Move bip32 module to crate root (Tobin C. Harding)

Pull request description:

  We are attempting to flatten the `util` module.

  Move the `bip32` module to the crate root out of `util`.

  Currently `src/util/` is ignored by the formatter so this move requires `bip32` module to be formatted. Formatting is done as a separate patch so reviewers can run `cargo +nightly fmt` and compare the diffs if so desired.

ACKs for top commit:
  apoelstra:
    ACK 8bed2ddffe
  Kixunil:
    ACK 8bed2ddffe

Tree-SHA512: dadea31be0459fd10e71927bd21dc44b59428f695a6df7093052ca7257b6590d5dd5b1343a89869ac9f4d7805dbca7558b475048ea9387c36265f14246cc6852
2022-09-21 16:46:05 +00:00
Andrew Poelstra a0899eb8e4
Merge rust-bitcoin/rust-bitcoin#1258: Add API method `absolute::LockTime::is_satisfied_by_lock`
8aa94bd0b2 Improve docs on is_implied_by (Tobin C. Harding)
b8721bf244 Add method relative::LockTime::is_implied_by (Tobin C. Harding)
d5492b8a25 Add absolute::LockTime::is_implied_by method (Tobin C. Harding)
98cbdb5a5c Increment lock value (Tobin C. Harding)

Pull request description:

  Patch 1 is a docs improvement.

  Patch 2 commit log:

  When implementing the absolute lock time API we decided on _not_
  supporting checking lock satisfaction with another lock, instead we
  provided a pattern in the docs for doing so. Fast forward a months and
  I, the primary author, then forgot to use the correct pattern when using
  the API in `rust-miniscript` - this is a sure sign that the API is too
  hard to use. In this time we worked on the relative lock API and came up
  with a `is_satisfied_by_lock` method - this is identical to the required
  use case in the absolute lock time module.

  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`).

ACKs for top commit:
  Kixunil:
    ACK 8aa94bd0b2
  apoelstra:
    ACK 8aa94bd0b2

Tree-SHA512: 5c7efa1727a846248783c9e6044bf8b0a7550d298ca1b5d3274ef325cf82efa33392ad14ef7e3e9aa91423ba56e8a3e7f4a38a966be38f673dccefd46465ad51
2022-09-20 17:19:49 +00:00
Tobin C. Harding f429c22599 Remove user_enum macro
The `user_enum` macro is only used a single time. The macro includes
custom serde logic which can be trivially derived instead.

Remove the `user_enum` macro and just implement `Network` the old
fashioned way. Doing so simplifies the code.
2022-09-20 16:53:38 +10:00
Tobin C. Harding ad29084582 Add Network serde roundtrip test
In preparation for patching the `Network` serde impls; add a roundtrip
test for `serde` (de)serializing  the `Network` type.
2022-09-20 15:29:55 +10:00
Tobin C. Harding 8bed2ddffe Run formmater on bip32
Run the formmater on the newly moved `bip32` module. No changes other
than those introduced by `cargo +nightly fmt`.
2022-09-20 14:22:01 +10:00
Tobin C. Harding 34113c9558 Move bip32 module to crate root
We are attempting to flatten the `util` module; move the `bip32` module
to the crate root out of `util`.
Currently `src/util/` is ignored by the formatter, this patch does not
do formatting, will be done later.
2022-09-20 14:21:11 +10:00
Tobin C. Harding 8aa94bd0b2 Improve docs on is_implied_by
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).
2022-09-20 08:41:12 +10:00
Tobin C. Harding b8721bf244 Add method relative::LockTime::is_implied_by
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.
2022-09-20 08:40:35 +10:00
Tobin C. Harding 2001f44e46 Try to fix up sighash export mess
Recently we moved a few types from `transaction` to `sighash`, while
doing so I erroneously annotated code with the `deprecated` attribute
hoping it would give downstream users a gentle upgrade experience. It
turns out `deprecated` only works on functions.

During that same work, we re-exported from the crate root a bunch of
types from the `sighash` module that probably should not have been
re-exported. We are currently trying to create a nice clean API surface,
in an effort to move in the right direction we should remove the
re-exports and just re-export the `sighash` module.

Try to clean up the sighash export mess by doing:

- Remove the re-exports from the `transaction` module
- Remove crate level re-exports of `sighash` module types
- Re-export `sighash` module

Note, this patch is a breaking API change, justified by the fact that
there is no good way to gently lead downstream when moving types since
types cannot be deprecated with the `deprecated` attribute.
2022-09-19 16:46:02 +10:00
Tobin C. Harding e24c91e9ca sign_message: Run cargo fmt
We just renamed and moved the `util::misc` module to
`crate::sign_message`, doing so prevents `rustfmt` from ignoring it.

run `cargo +nighly fmt`.
2022-09-19 16:44:05 +10:00
Tobin C. Harding 041d6a8097 Move and deprecate script_find_and_remove
Done as part of flattening the `util` module.

We have a function in `util::misc` that operates on scripts, it is an
implementation of `FindAndDelete` from Bitcoin Core and is primarily
useful for supporting `CODESEPARATOR`, which we do not support.

Move the public `script_find_and_remove` function out of `util/misc.rs` and into
`util/mod.rs`, delete the testing and deprecate the function.
2022-09-19 16:44:04 +10:00
Andrew Poelstra aeacbe763d
Merge rust-bitcoin/rust-bitcoin#1286: Make `ChainHash::using_genesis_block` constant
92ef41b663 Make `ChainHash::using_genesis_block` constant (Jeffrey Czyz)

Pull request description:

  ChainHash::using_genesis_block can't be `const` if it uses a `match` expression prior to Rust 1.46. Use an array mapping to work around this limitation.

  Follow-up suggested in [#1283](https://github.com/rust-bitcoin/rust-bitcoin/pull/1283#issuecomment-1249418809).

ACKs for top commit:
  apoelstra:
    ACK 92ef41b663
  Kixunil:
    ACK 92ef41b663

Tree-SHA512: 71f95877c8e5335012ad0339e1f8691e3b33344fa02ecc24c3d4d728232cb7b0de62aec20eb1855b23eeccfbc2eeab920b21ee2243d95c6c89fa8ad5bc846975
2022-09-16 22:21:08 +00:00
Jeffrey Czyz 92ef41b663
Make `ChainHash::using_genesis_block` constant
ChainHash::using_genesis_block can't be `const` if it uses a `match`
expression prior to Rust 1.46. Use an array mapping to work around this
limitation.
2022-09-16 13:49:50 -05:00
Andrew Poelstra ccf9c3a172
Merge rust-bitcoin/rust-bitcoin#1285: Implement From for hash types
96dfcdf3b7 Implement From for hash types (Noah)

Pull request description:

  Reopening #1280 on the right branch + implemented `From` for references of types that were done in #1280.

ACKs for top commit:
  Kixunil:
    ACK 96dfcdf3b7
  apoelstra:
    ACK 96dfcdf3b7

Tree-SHA512: ad762032390f060b87cdd24033a5fc13a4c5297c55d7091ed89c5ca240be2f57998c0be084f40f9b04833920756b93a3ca4576a2ef944872354d1b3607734228
2022-09-16 18:05:09 +00:00
Andrew Poelstra 51df1c4024
Merge rust-bitcoin/rust-bitcoin#1282: Remove code deprecated last release
7a1aa2098a Remove code deprecated last release (Tobin C. Harding)

Pull request description:

  We give one release cycle for deprecating old code so as to make the upgrade path easier for downstream users.

  Remove code deprecated during the last release (v0.29.0).

  (Check out my diff stats - all red ;)

ACKs for top commit:
  apoelstra:
    ACK 7a1aa2098a
  Kixunil:
    ACK 7a1aa2098a

Tree-SHA512: d4b9c65d0d8a0aac31cf94d826e8a6084d4f5427a26da2ad5a3973c7f5931fa10695214dc602261e9079e1c06c6dc3f5b5dcdb8d20b5c39eaadd9a33d23746dd
2022-09-16 17:36:22 +00:00
Noah 96dfcdf3b7 Implement From for hash types 2022-09-16 22:29:05 +10:00
Jeffrey Czyz b1d85160ba
Add constants to `ChainHash` for each `Network`
`ChainHash::using_genesis_block` can't be made `const` because it uses a
`match` expression, which is only valid in Rust 1.46. Add individual
constants as a workaround so that `ChainHash` can be used in `const`
contexts.
2022-09-15 20:03:57 -05:00
Tobin C. Harding 7a1aa2098a Remove code deprecated last release
We give one release cycle for deprecating old code so as to make the
upgrade path easier for downstream users.

Remove code deprecated during the last release (v0.29.0).
2022-09-16 08:08:53 +10:00
Tobin C. Harding 3f275f7f2b Remove code deprecated in v0.28.0
I believe we said we'd keep deprecated code around for two release
cycles so this code can  all be deleted now.
2022-09-15 13:29:02 +10:00
Tobin C. Harding c4eb218cd0 schnorr:: Remove incorrect deprecated
Currently we attempt to have deprecated key types in the `schnorr`
module. The `deprecated` attribute does not work on types, only on
functions.

Remove the broken deprecation logic and re-export key types instead of
using type alias', this allows a bunch of qualified paths to be
simplified also.

Add `pub use` re-exports of all secp256k1 types that are part of the
public API of the `schnorr` module. This makes the module more ergonomic
to use.
2022-09-15 12:34:51 +10:00
Tobin C. Harding d5492b8a25 Add absolute::LockTime::is_implied_by method
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`).
2022-09-15 09:21:13 +10:00