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Changelog.md

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This is the changelog, summarising changes in each version(some minor changes may be ommited).

0.3

0.3.16

Deprecated these functions:

  • konst::ptr::is_null
  • konst::ptr::nonnull::new

0.3.15

Soft-removed "mut_refs" and "nightly_mut_refs" feature (by hidding it in docs), changed to using "rust_1_83" feature to enable &mut-taking const fns. (to avoid breakage, "mut_refs" still enables items that use &mut in const by enabling "rust_latest_stable")

Changed "rust_latest_stable" feature to enable "rust_1_83" feature.

Added konst::manually_drop::take function

Added these structs to konst::array:

  • ArrayBuilder
  • ArrayConsumer

0.3.14

Fixed accidental inclusion of private macros in docs.

0.3.12

Changed konst::array::from_fn macro to allow unparenthesized type to the left of the `=>

Added these macros in konst::array (which require the "rust_1_83" feature):

  • map_
  • from_fn_

0.3.10

Added "rust_1_83" feature, which enables the "mut_refs" feature.

Added "destructure" macro (requires the "rust_1_83" feature)

Fixed future compatibility warnings

0.3.9

Defined these macros max, max_by, max_by_key, min, min_by, and min_by_key macros.

Re-exported these macros in the konst::cmp module:

  • coerce_to_cmp
  • const_cmp
  • const_cmp_for
  • const_eq
  • const_eq_for
  • impl_cmp
  • max
  • max_by
  • max_by_key
  • min
  • min_by
  • min_by_key

Now the fold and foldr methods in konst::iter::eval can take closures with type-annotated parameters (e.g: |accum: Bar, element: Qux| {)

0.3.8

Removed most Copy restriction of these macros:

  • konst::array::from_fn
  • konst::array::map
  • konst::iter::collect_const The pattern of the closure passed to konst::array::map is still required not to move out of the input array.

Improved konst::array::{from_fn, map} macros by allowing its closure parameter to take more unparenthesized patterns.

Improved the konst::iter::{collect_const, eval, for_each} macros by allowing single-parameter closures passed to the macro to annotate the type of the parameter.

0.3.7

Fixed ChunksExact::remainder's implementation, it used to return the entire uniterated-over slice, when it should only return the part of the slice that the iterator never yields.

Added these items to konst::slice module:

  • ArrayChunksRev struct
  • ArrayChunks struct
  • RChunksExactRev struct
  • RChunksExact struct
  • RChunksRev struct
  • RChunks struct
  • array_chunks function
  • as_chunks function
  • as_rchunks function
  • rchunks_exact function
  • rchunks function

0.3.6

Changed type_eq_projection_fn macro to not use any unsafe, this may require fixing bounds in your code.

0.3.5

Added typewit = "1.1" dependency.

Removed konst::docs module.

Replaced konst::polymorphism::{HasTypeWitness,MakeTypeWitness,TypeWitnessTypeArg,TypeEq} from the same-named items in typewit

Added reexport of typewit::{self, CallFn, simple_type_witness,TypeFn,type_fn} in konst::polymorphism

0.3.4

Fixed Parser::parse_direction's const-ness by making it a const fn.

0.3.0

Removed konst::array::try_into_array macro (it's superceeded by the function of the same name)

Removed functions

Removed these functions because the std equivalent is stably const:

  • konst::maybe_uninit::{as_ptr, assume_init, assume_init_ref}
  • konst::ptr::{deref, deref_mut}
  • konst::slice::{first, last, split_first, split_last}

Removed extra from parameter of:

  • konst::slice::{bytes_contain, bytes_rcontain, bytes_find, bytes_rfind}
  • konst::string::{find, contains, rfind, rcontains}

Added these items in konst::polymorphism:

  • HasTypeWitness(trait)
  • MakeTypeWitness(trait)
  • TypeEq(struct)
  • TypeWitnessTypeArg(trait)
  • type_eq_projection_fn(macro)

Added konst::docs::type_witnesses documentation module.

Added konst::chr module, with these items:

  • Utf8Encoded
  • encode_utf8
  • from_u32_unchecked
  • from_u32

Renamed IntoIterKind to ConstIntoIter.

Added Item and IntoIter assoc types to ConstIntoIter, and added checks in iterator macros that Item matches the item's type.

Moved comparison-related from konst::polymorphism to new konst::cmp module.

Renamed ConstCmpMarker to ConstCmp.

Renamed these marker types:

  • IsAConstCmpMarker to IsAConstCmp
  • IsIntoIterKind to IsConstIntoIter
  • IsNonIteratorKind to IsIntoIterKind (not to be confused with the previous name for the trait ConstIntoIter trait)

Removed konst::polymorphism::IsArrayKind

Added konst::polymorphism::IsRefKind

Added konst::cmp::ConstCmpUnref traits.

Moved all Is*Kind field-less structs to konst::polymorphism::kinds, made them all 0-variant enums, and reexported the relevant items in konst::cmp and konst::iter.

Removed ConstCmp::This associated type, now it's derived with ConstCmpUnref.

Added konst::slice::BytesPattern trait, implemented for char, [u8], [u8; N], and str.

Made the second parameter of konst::slice::bytes_* functions take a generic BytesPattern.

Added konst::string::Pattern trait, implemented for char and &str

Made string functions take P: Pattern<'s> as the pattern argument.

Bumped minimum supported Rust versions to 1.65.0

Added const_panic = "0.2" depdendency to konst

Made all panicking code use const_panic to have the same error messages as at runtime (previously use array indexing hack to panic).

Added konst::array::from_fn macro.

Added konst::iter::{repeat, Repeat}.

Added iteration over ranges of non-usize integers and char.

Added konst::iter::Step trait.

Added konst::ffi::cstr module.

Reexporting konst::iter::step::Step in konst::iter

Added these konst::string items:

  • Chars(struct)
  • RChars(struct)
  • CharIndices(struct)
  • RCharIndices(struct)
  • char_indices(function)
  • chars(function)
  • from_iter(macro)
  • is_char_boundary(function)
  • str_concat(macro)
  • str_join(macro)

Rewrote Parser to only support parsing &str.

Added Parser::{skip, skip_back} methods

Removed these parser functions:

  • Parser::*_b
  • Parser::*_u8 (except for parse_u8)
  • Parser::advance_*
  • Parser::from_bytes

Renamed these Parser functions:

  • from_str to new.
  • bytes to remainder (and takes &str)

Added these Parser methods:

  • into_other_error
  • rsplit_terminator
  • rsplit
  • split_keep
  • split_terminator
  • split
  • skip
  • skip_back
  • trim
  • trim_matches
  • with_start_offset

Added ParseError::other_error function for constructing Other errors with custom error messages.

Added FromBoth variant to konst::parser::ParseDirection

Renamed ParserFor trait to HasParser

Added SplitExhausted,DelimiterNotFound variants to konst::parsing::ErrorKind

Removed map_err capability of try_rebind due to being untested and unused.

Removed unwrap_opt_or and unwrap_res_or macros (they are superceeded by other macros).

Made array::map and iterator-taking macros support specifying an explicit return type.

Added assertc_eq, assertc_ne macros.

Added type annotation support to rebind_if_ok macro (for the pattern as a whole).

Fixed support for continue and break inside of konst::for_range.

Changed Parser methods from taking &str patterns to taking any P: Pattern<'p>

Renamed parse_any macro to parser_method

Removed konst::primitive::parse_*_b functions

Renamed "parsing" feature to "parsing_proc" and "parsing_no_proc" feature to "parsing"

Added "iter" feature(enabled by default), feature-gating all iterator-related items.

Added "debug" feature for additional safety checks in konst unsafe code.

Made konst crate 2021 edition, resolver="2".

Removed all "rust_1_*" features, and all old-version-dependent code.

Renamed konst_macro_rules to konst_kernel crate, which defines items for reexporting in konst (mostly needed for having macros in submodules).

0.2

0.2.19

Addeded konst::iter module, with const encodings of Iterator API:

  • konst::iter::collect_const (macro)
  • konst::iter::eval (macro)
  • konst::iter::for_each (macro)
  • konst::iter::into_iter (macro)
  • konst::iter::iterator_dsl (documentation module)
  • konst::iter::IntoIterWrapper (struct)
  • konst::iter::IsIntoIterKind (struct)
  • konst::iter::IsIteratorKind (struct)
  • konst::iter::IsNonIteratorKind (struct)
  • konst::iter::IsStdKind (struct)
  • konst::iter::IntoIterKind(trait)

Added these const fn (enabled by the "rust_1_64" feature):

  • konst::string::split
  • konst::string::rsplit
  • konst::string::split_terminator
  • konst::string::rsplit_terminator
  • konst::string::split_once
  • konst::string::rsplit_once

Added these const string iterators (enabled by the "rust_1_64" feature):

  • konst::string::Split
  • konst::string::RSplit
  • konst::string::SplitTerminator
  • konst::string::RSplitTerminator

Added these slice functions:

  • konst::slice::chunks(requires the "rust_1_64" feature)
  • konst::slice::chunks_exact(requires the "rust_1_64" feature)
  • konst::slice::iter
  • konst::slice::iter_copied(requires the "rust_1_61" feature)
  • konst::slice::windows (requires the "rust_1_64" feature)

Added these slice iterator types:

  • konst::slice::Chunks (requires the "rust_1_64" feature)
  • konst::slice::ChunksRev (requires the "rust_1_64" feature)
  • konst::slice::ChunksExact (requires the "rust_1_64" feature)
  • konst::slice::ChunksExactRev (requires the "rust_1_64" feature)
  • konst::slice::Iter
  • konst::slice::IterRev
  • konst::slice::IterCopied (requires the "rust_1_61" feature)
  • konst::slice::IterCopiedRev (requires the "rust_1_61" feature)
  • konst::slice::Windows (requires the "rust_1_64" feature)
  • konst::slice::WindowsRev (requires the "rust_1_64" feature)

Added range iterator types:

  • konst::range::RangeIter
  • konst::range::RangeIterRev
  • konst::range::RangeInclusiveIter
  • konst::range::RangeInclusiveIterRev
  • konst::range::RangeFromIter

Added konst::option::copied function (requires the "rust_1_61" feature)

Added "rust_1_51" feature, made "const_generics" feature delegate to it.

Added "rust_1_57" feature, which enables the "rust_1_56" feature.

Added "rust_1_61" feature, which enables the "rust_1_57" feature.

Changed "rust_1_64" feature: now it enables "rust_1_61" feature.

Added "rust_latest_stable" feature that enables the latest "rust_*" feature.

0.2.16

Added "rust_1_64" crate feature, to make slice indexing take constant time from Rust 1.64.0 onwards.

Changed "constant_time_slice" to enable "rust_1_64" feature.

0.2.14

Made "deref_raw_in_fn" feature only require Rust 1.56.0 by stopping the use of an (already stabilized) nightly feature flag.

0.2.13

Added these functions:

  • konst::manually_drop::as_inner (requires the "rust_1_56" feature).
  • konst::manually_drop::as_inner_mut (requires the "mut_refs" feature).

Added these MaybeUninit functions:

  • konst::maybe_uninit::array_assume_init (requires the "rust_1_56" feature)
  • konst::maybe_uninit::as_mut_ptr (requires the "mut_refs" feature)
  • konst::maybe_uninit::as_ptr
  • konst::maybe_uninit::assume_init_mut (requires the "mut_refs" feature)
  • konst::maybe_uninit::assume_init_ref (requires the "rust_1_56" feature)
  • konst::maybe_uninit::assume_init (requires the "rust_1_56" feature)
  • konst::maybe_uninit::uninit_array (requires the "rust_1_56" feature)
  • konst::maybe_uninit::write (requires the "mut_refs" feature)

Added these raw pointer/NonNull functins:

  • konst::ptr::as_mut (requires the "mut_refs" feature)
  • konst::ptr::as_ref (requires the "rust_1_56" feature)
  • konst::ptr::deref_mut (requires the "mut_refs" feature)
  • konst::ptr::deref (requires the "rust_1_56" feature)
  • konst::ptr::is_null (requires the "rust_1_56" feature)
  • konst::ptr::non_null::as_mut (requires the "mut_refs" feature)
  • konst::ptr::non_null::as_ref (requires the "rust_1_56" feature)
  • konst::ptr::non_null::from_mut (requires the "mut_refs" feature)
  • konst::ptr::non_null::from_ref
  • konst::ptr::non_null::new (requires the "rust_1_56" feature)

0.2.12

Added konst::array::map, which requires the rust_1_56 feature.

0.2.10

Added "rust_1_55" and "rust_1_56" features.

Change: functions that required the "deref_raw_in_fn" feature can be used on Rust 1.56.0 (whenever that reaches stable) with the "rust_1_56" feature.

Added these slice functions

  • konst::slice::bytes_find_keep
  • konst::slice::bytes_find_skip
  • konst::slice::bytes_rfind_keep
  • konst::slice::bytes_rfind_skip
  • konst::slice::bytes_trim_end_matches
  • konst::slice::bytes_trim_end
  • konst::slice::bytes_trim_matches
  • konst::slice::bytes_trim_start_matches
  • konst::slice::bytes_trim_start
  • konst::slice::bytes_trim
  • konst::slice::get_from_mut (requires the "mut_refs" feature)
  • konst::slice::get_from
  • konst::slice::get_mut (requires the "mut_refs" feature)
  • konst::slice::get_range_mut (requires the "mut_refs" feature)
  • konst::slice::get_range
  • konst::slice::get_up_to_mut (requires the "mut_refs" feature)
  • konst::slice::get_up_to
  • konst::slice::get

Added these str functions, all of which require the "rust_1_55" feature:

  • konst::string::from_utf8
  • konst::string::get_from
  • konst::string::get_range
  • konst::string::get_up_to
  • konst::string::split_at
  • konst::string::str_from
  • konst::string::str_range
  • konst::string::strip_prefix
  • konst::string::strip_suffix
  • konst::string::str_up_to
  • konst::string::trim
  • konst::string::trim_start
  • konst::string::trim_end
  • konst::string::trim_matches
  • konst::string::trim_start_matches
  • konst::string::trim_end_matches
  • konst::string::find_skip
  • konst::string::find_keep
  • konst::string::rfind_skip
  • konst::string::rfind_keep

Renamed these functions, reexported with old name, and deprecated the reexport:

  • string::str_starts_with: renamed to string::starts_with
  • string::str_ends_with: renamed to string::ends_with
  • string::str_find: renamed to string::find
  • string::str_contains: renamed to string::contains
  • string::str_rfind: renamed to string::rfind
  • string::str_rcontains: renamed to string::rcontains

Added the konst::string::from_utf8 macro.

Added konst::string::Utf8Error error struct.

0.2.9

Fixed internal soundness bug in where unions weren't #[repr(C))].

0.2.7

Added the "mut_refs", "nightly_mut_refs" features for const fns that take mutable references.

Added these mutable slice functions:

  • konst::slice::first_mut
  • konst::slice::last_mut
  • konst::slice::slice_from_mut
  • konst::slice::slice_range_mut
  • konst::slice::slice_up_to_mut
  • konst::slice::split_at_mut
  • konst::slice::split_first_mut
  • konst::slice::split_last_mut
  • konst::slice::try_into_array_mut

0.2.5

Added ParseFor trait and parse_with macro, for type-dispatched parsing.

Added StdParser struct as the parser for std types.

Broadened valid syntax for try_rebind/rebind_if_ok

Added trailing comma support to every macros, where applicable

0.2.4

Fixed handling of length argument of slice::try_into_array macro, when the "const_generics" feature is enabled, it would previously require non-trivial expressions to be wrapped in braces.

0.2.3

Added the slice::try_into_array macro and nightly function to try to convert &[T] to &[T; N]

Defined the slice::TryIntoArrayError as the error type for slice::try_into_array

Added slice::{first, last, split_first, split_last} functions, const equivalents of the slice methods.

Added these (generic) constants, which can be used in [CONST; LEN] even for non-Copy types:

  • option::NONE: alias for None
  • alloc_type::COW_STR_NEW: An empty Cow<'_, str<
  • alloc_type::COW_SLICE_NEW: An empty Cow<'_, [T]>
  • alloc_type::STRING_NEW: An empty String
  • alloc_type::VEC_NEW}: An empty Vec<T>
  • maybe_uninit::UNINIT: An uninit MaybeUninit<T>
  • maybe_uninit::UNINIT_ARRAY: An uninit [MaybeUninit<T>; LEN]

Added "deref_raw_in_fn" feature to enable const fns that need to dereference raw pointers, requires the nightly compiler.

Added "alloc" feature to enable the alloc_type module.

0.2.1

Defined the konst_macro_rules crate 0.2.0, to reexport macros in konst submodules.

Added macro equivalents of Option::{and_then, filter, map, ok_or, ok_or_else, or_else, unwrap_or, unwrap_or_else, flatten} in the konst::option module.

Added macro equivalents of Result::{unwrap_ctx, unwrap_or, unwrap_or_else, ok, err, map, map_err, and_then, or_else} in the konst::result module.

Deprecated the unwrap_opt_or, and unwrap_res_or macros.

Defined result::unwrap_err_or_else macro for convenience.

Added try_ and try_opt macros

Added primitive::parse_* functions, to parse all integer types and bool from &str or &[u8].

Added Parser::parse_ methods for the remaining integer types (u8, u16, u32, i8, i16, i32)

Added "parsing_no_proc" cargo feature, to enable all parser items except for those that require using the konst_proc_macro crate.

Fixed eq_bytes and cmp_bytes doc examples

Fixed the lack of indicators that the rebind_if_ok and try_rebind macros require the "parsing_no_proc" feature.

0.2.0

Breaking change: tightened the syntax of the parse_any macro, now it requires the last branch in the match-like syntax to be _ => <expression>, forbidding _ patterns in other branches.

Added support for these Parser methods in parse_any:

  • find_skip - rfind_skip - trim_start_matches - trim_end_matches

Moved these functions from slice::cmp to slice, and reexported back in slice::cmp:

  • cmp_slice_u8: renamed to cmp_bytes
  • eq_slice_u8: renamed to eq_bytes
  • cmp_option_slice_u8: renamed to cmp_option_bytes
  • eq_option_slice_u8: renamed to eq_option_bytes The above *_bytes functions do not require any cargo features to use.

Added comparison functions for &[usize], &[isize], Option<&[usize]>, Option<&[isize]>

0.1

0.1.0

Defined the konst_proc_macros crate 0.1.0, for internal use by konst.

Defined equality and ordering comparison functions for:

  • All the primitive types, including integers, bool, char, and Options of them, inside the primitives::cmp module.

  • Ranges and RangeInclusives of all unsigned integer types, inside the range::cmp module.

  • All the NonZero* types, and Option<NonZero*> types, inside the nonzero::cmp module.

  • &str and Option<&str>, inside the string module.

  • Ordering, Option<Ordering>, PhantomData<T>, PhantomPinned, inside the other::cmp module.

  • Slices of integers, &[bool], &[char], &[&str], &[&[u8]], and Options of them, inside the slice::cmp module.

Defined the polymorphism module, to do type-based overloading, currently limited to const_eq and const_cmp methods.

Defined these items in the polymorphism module:

  • CmpWrapper: Wrapper type which implements many methods for std types, currently only const_eq and const_cmp.

  • ConstCmpMarker: Trait for describing whether a type is from the standard library, and has const_eq and/or const_cmp methods.

  • IsAConstCmpMarker: Helper type used to automatically coerce standard library types into CmpWrapper, and leaving non-std ones unwrapped.

  • IsArrayKind, IsNotStdKind, IsStdKind: for describing the kind of type something is.

Declared these functions in the slice module: bytes_contain, bytes_end_with , bytes_find , bytes_rcontain , bytes_rfind , bytes_start_with, bytes_strip_prefix , bytes_strip_suffix , slice_from , slice_range , slice_up_to , split_at.

Declared these functions in the string module: str_contains, str_ends_with, str_find, str_rcontains, str_rfind, str_starts_with

Declared the parsing module with:

  • Parser: A parser constructible from &[u8] or &str.

  • ParseError: The error type returned by fallible Parser methods.

  • ErrorKind: Enum for the kinds of parsing errors that happened, included inside ParseError

  • ParseDirection: Enum for the direction a parser is currently parsing from, either the end or the start.

  • ParseValueResult: Type alias for the Result types that Parser returns when parsing types.

  • ParserResult: Type alias for Result<'a, Parser, ParseError>

Reexporting these types in the root module:

parsing::{Parser}
string::{cmp_str, eq_str, cmp_option_str, eq_option_str},

Declared these macros:

  • coerce_to_cmp: For coercing values to types with const_eq or const_cmp methods.

  • const_cmp, const_cmp_for, const_eq, const_eq_for: for comparing values

  • for_range: for iterating over a range.

  • impl_cmp: For implementing ConstCmpMarker for multiple types, and declaring const_eq/const_cmp.

  • konst: For emulating inline const (const{ }).

  • parse_any: For calling Parser methods with multiple alternative string literal patterns.

  • rebind_if_ok: if let Ok which rebinds variables instead of shadowing them.

  • try_equal: For returning early when an ordering isn't Ordering::Equal

  • try_rebind: For returning early on Err, rebinding variables on Ok.

  • unwrap_ctx: Unwraps a Result, calling .panic() on the error value on error.

  • unwrap_opt_or: Const-equivalent of Option::unwrap_or and Option::unwrap_or_else.

  • unwrap_res_or: Const-equivalent of Result::unwrap_or and Result::unwrap_or_else.

Defined these cargo features:

  • "cmp"(enabled by default): Enables all the comparison functions and macros.

  • "parsing"(enabled by default): Enables the parsing module, macros, and compiles the konst_proc_macros crate.

  • "constant_time_slice": Improves the performance of certain slice functions from taking linear time to constant time. Requires Rust nightly.

  • "const_generics": Enables impls that use const generics, instead of being implemented for small arrays. Requires Rust 1.51.0 .