Changelog

Unreleased

Fixes

fixed is_homogeneous() overloads with first_nonmatch outparam being broken in optimized builds (#231) (@Forbinn)
fixed unclear error message when parsing integers that would overflow (#224) (@chrimbo)
fixed CMake install target installing meson.build files (#236) (@JWCS)

v3.4.0

fixed "unresolved symbol" error with nvc++ (#220) (@Tomcat-42)

Fixes

fixed value_flags not being preserved correctly when inserting into tables and arrays (#108) (@LebJe)
fixed toml::value::flags() not being cleared when std::move-ing a value
fixed error in README (#195) (@andrewkcorcoran)
fixed compiler error when using NVCC (#198) (@thompsonnoahe)
fixed noexcept(...) sometimes being incorrectly derived on for_each()
fixed for_each() compilation error on GCC <= 7 (#197) (@sagi-ottopia, @damirbarr)
fixed FLT_RADIX check getting broken by Intel MKL headers (#202) (@iago-lito)
fixed keys containing \t incorrectly formatting as bare keys (@jasmine-zhu, @arp242)
fixed keys containing \t and \n not round-tripping correctly (@arp242)

Additions

added support for using enums with value_or()

Changes

renamed header files to have .hpp extension (toml.h is still present for backwards-compatibility)

Build system

fixed meson builds with -Ddefault_library=static having hidden symbols on GNU compilers (#201) (@vlad0x00)

v3.3.0

Released 2023-01-29

Fixes

fixed null pointer dereference in parser when exceptions are disabled (#169) (@ncaklovic)
fixed spurious warnings in MSVC 19.34
fixed toml::parse_file() on windows for non-ASCII paths
fixed a spurious table redefinition error (#187) (@jorisvr)
fixed UB edge-case in integer parsing (#188) (@jorisvr)
fixed some build issues with Apple-flavoured Clang (#189) (@eddelbuettel)

Additions

added toml::format_flags::terse_key_value_pairs
added TOML_ENABLE_FLOAT16 config (#178) (@Scrumplex)

Removals

removed automatic detection of _Float16 (you must explicitly set TOML_ENABLE_FLOAT16 to enable it) (#186) (@benthetechguy)

Build system

re-wrote the meson scripts to fix a number of issues (#185, #186) (@Tachi107, @benthetechguy)
increased the minimum required meson version to 0.61.0

v3.2.0

Released 2022-08-29

Fixes

fixed [dotted.table] source columns sometimes being off by one (#152) (@vaartis)
fixed spurious Wnull-dereference warning on GCC (#164) (@zaporozhets)
fixed print_to_stream ambiguity for size_t (#167) (@acronce)

Additions

added value type deduction to emplace() methods
added toml::path utility type (#153, #156, #168) (@jonestristand, @kcsaul)
added config option TOML_CALLCONV
added missing relational operators for source_position

Changes

relaxed cvref requirements of is_homogeneous(), emplace(), emplace_back(), emplace_hint()
relaxed mantissa and digits10 requirements of extended float support

v3.1.0

Released 2022-04-22

Fixes

fixed potential segfault when calling at_path() with an empty string
fixed UB in internal unicode machinery (#144) (@kchalmer)
fixed a number of spurious warnings with Clang 10 (#145, #146) (@chronoxor)

Additions

added toml::array::for_each()
added toml::table::for_each()
added config options TOML_EXPORTED_CLASS, TOML_EXPORTED_MEMBER_FUNCTION, TOML_EXPORTED_STATIC_FUNCTION & TOML_EXPORTED_FREE_FUNCTION
added support for escape sequence \e when using TOML_ENABLE_UNRELEASED_FEATURES (toml/790)
added support for more unicode in bare keys when using TOML_ENABLE_UNRELEASED_FEATURES (toml/891)

Removals/Deprecations

deprecated old TOML_API option in favour new TOML_EXPORTED_X options (it will continue to work as it did before if none of the new function export options are defined)

Build system

meson: added compile_library option (@Tachi107)
meson: added ubsan_tests and ubsan_examples options
meson: use system dependencies where available when building tests (@Tachi107)

v3.0.1

Released 2022-01-13

This is a single-bugfix release to fix an ODR issue for people using header-only mode in multiple translation units. If you aren't seeing linker errors because of toml::array::insert_at(), this release holds nothing of value over v3.0.0.

Fixes

fixed erroneous use of TOML_API causing ODR issue (#136) (@Azarael)

v3.0.0

Released 2022-01-11

This release will be a major version bump, so it's ABI breaks all around. Any changes that are likely to cause migration issues (API changes, build system breakage, etc.) are indicated with ⚠️.

Fixes

⚠️ fixed toml::table init-list constructor requiring double-brackets
⚠️ fixed TOML_API + extern templates causing linker errors in some circumstances
⚠️ fixed incorrect noexcept specifications on many functions
⚠️ fixed missing TOML_API on some interfaces
fixed toml::json_formatter not formatting inf and nan incorrectly
fixed a number of spec conformance issues (#127, #128, #129, #130, #131, #132, #135) (@moorereason)
fixed an illegal table redefinition edge case (#112) (@python36)
fixed documentation issues
fixed GCC bug causing memory leak during parse failures (#123, #124) (@rsmmr, @ronalabraham)
fixed incorrect handling of vertical whitespace in keys when printing TOML to streams
fixed incorrect source position in redefinition error messages
fixed missing includes <initializer_list>, <utility>
fixed parser not correctly round-tripping the format of binary and octal integers in some cases
fixed some incorrect unicode scalar sequence transformations (#125)
fixed strong exception guarantee edge-cases in toml::table and toml::array

Additions

added value flags to array + table insert methods (#44) (@levicki)
added support for Unicode 14.0
added support for ref categories and cv-qualifiers in toml::node::ref()
added magic toml::value_flags constant toml::preserve_source_value_flags
added clang's enum annotation attributes to all enums
added TOML_ENABLE_FORMATTERS option
added toml::yaml_formatter
added toml::value copy+move constructor overloads with flags override
added toml::table::prune()
added toml::table::lower_bound() (same semantics as std::map::lower_bound())
added toml::table::emplace_hint() (same semantics as std::map::emplace_hint())
added toml::table::at() (same semantics as std::map::at())
added toml::node_view::operator==
added toml::key - provides a facility to access the source_regions of parsed keys (#82) (@vaartis)
added toml::is_key<> and toml::is_key_or_convertible<> metafunctions
added toml::format_flags::relaxed_float_precision (#89) (@vaartis)
added toml::format_flags::quote_infinities_and_nans
added toml::format_flags::indent_sub_tables (#120) (@W4RH4WK)
added toml::format_flags::indent_array_elements (#120) (@W4RH4WK)
added toml::format_flags::allow_unicode_strings
added toml::format_flags::allow_real_tabs_in_strings
added toml::format_flags::allow_octal_integers
added toml::format_flags::allow_hexadecimal_integers
added toml::format_flags::allow_binary_integers
added toml::date_time converting constructors from toml::date and toml::time
added toml::at_path(), toml::node::at_path() and toml::node_view::at_path() for qualified path-based lookups (#118) (@ben-crowhurst)
added toml::array::resize() param default_init_flags
added toml::array::replace() (#109) (@LebJe)
added toml::array::prune()
added toml::array::at() (same semantics as std::vector::at())
added parse_benchmark example
added operator-> to toml::value for class types

Changes

⚠️ toml::format_flags is now backed by uint64_t (was previously uint8_t)
⚠️ toml::source_index is now an alias for uint32_t unconditionally (was previously dependent on TOML_LARGE_FILES)
⚠️ toml::table now uses toml::key as the key type (was previously std::string)
⚠️ toml::value_flags is now backed by uint16_t (was previously uint8_t)
⚠️ made all overloaded operators 'hidden friends' where possible
⚠️ renamed toml::default_formatter to toml::toml_formatter (toml::default_formatter is now an alias)
⚠️ renamed TOML_PARSER option to TOML_ENABLE_PARSER (TOML_PARSER will continue to work but is deprecated)
⚠️ renamed TOML_UNRELEASED_FEATURES to TOML_ENABLE_UNRELEASED_FEATURES (TOML_UNRELEASED_FEATURES will continue to work but is deprecated)
⚠️ renamed TOML_WINDOWS_COMPAT to TOML_ENABLE_WINDOWS_COMPAT (TOML_WINDOWS_COMPAT will continue to work but is deprecated)
applied clang-format to all the things 🎉️
exposed TOML_NAMESPACE_START and TOML_NAMESPACE_END macros to help with ADL specialization scenarios
improved performance of parser
made date/time constructors accept any integral types
moved all implementation headers to /impl
renamed all implementation headers to .h and 'source' headers to .inl
updated conformance tests

Removals

⚠️ removed toml::format_flags::allow_value_format_flags
⚠️ removed TOML_LARGE_FILES (it is now default - explicitly setting TOML_LARGE_FILES to 0 will invoke an #error)
⚠️ removed unnecessary template machinery (esp. where ostreams were involved)
removed unnecessary uses of final

Build system

⚠️ increased minimum required meson version to 0.54.0
disabled 'install' path when being used as a meson subproject (#114) (@Tachi107)
fixed builds failing with meson 0.6.0 (#117) (@Tachi107)
general meson improvements and fixes (#115) (@Tachi107)
used override_dependency where supported (#116) (@Tachi107)

v2.5.0

Released 2021-07-11

Fixes

fixed linkage error with windows compat mode
fixed TOML_CONSTEVAL broken in MSVC (again)
fixed minor documentation bugs
fixed cmake project version being incorrect (#110) (@GiulioRomualdi)

Additions

added support for lowercase 't' and 'z' in datetimes (per spec)
added natvis file to cmake install (#106) (@Ryan-rsm-McKenzie)
added VS cpp.hint file to cmake install
added metafunctions is_container, is_chronological, is_value, is_node, inserted_type_of

Changes

improved debug code size by removing unnecessary std::forwards and std::moves
modernized the CMake build files (#102, #103, #105) (@friendlyanon)
updated conformance tests

v2.4.0

Released 2021-05-19

Fixes

fixed node::value() not retrieving inf and nan correctly
fixed dotted kvps being unable to add subtables (#61) (@Validark)
fixed linker error on linux ICC (#83) (@blackwer)
fixed segfault JSON-formatting a failed parse_result (#96) (@proydakov)
fixed spurious newline after JSON formatting a table
fixed VS intellisense not detecting TOML_COMPILER_EXCEPTIONS correctly
fixed crash with pathologically-nested inputs (#100) (@geeknik)
fixed parse_result natvis
fixed false-positive char8_t support detection on older compilers
fixed unnecessary #include <Windows.h> Windows builds (@BeastLe9enD)
fixed TOML_CONSTEVAL breaking on VS 16.10.0pre2
fixed spurious warnings with MSVC /Wall
fixed missing blank lines between consecutive empty tables/A-o-T
fixed unnecessary TOML_API declarations
fixed many small documentation issues

Additions

added proper cmake support (#85) (@ClausKlein)
added cmake FetchContent information to documentation (#101) (@proydakov)

Removals

removed explicit #include <fstream> requirement for parse_file()

v2.3.0

Released 2020-12-29

Fixes

fixed compiler errors caused by <charconv> with Apple-flavoured clang
fixed array and table iterators missing iterator_category (#77) (@HazardyKnusperkeks)
fixed Wuseless-cast warnings on GCC 10 (#75) (@HazardyKnusperkeks)
fixed formatter not correctly line wrapping in some rare circumstances (#73) (@89z)
fixed an unnecessary global compiler flag breaking builds when used as a meson subproject (#72) (@jamabr)
fixed link error caused by <charconv> on emscripten (#71) (@suy)
fixed ambiguity with the toml::literals inline namespace (#69) (@std-any-emplace)
fixed formatter emitting superfluous newlines after printing tables (#68) (@std-any-emplace)
fixed array and table iterators not converting between const and non-const versions of themselves (#67) (@std-any-emplace)
fixed some parser crashes when given pathologically-malformed UTF-8 (#65) (@sneves)

v2.2.0

Released 2020-08-09

Fixes

fixed some issues building with VS2017 (#55) (@sobczyk)
fixed _Float16 erroneously detected as supported on g++ (#57) (@sobczyk)
fixed <Windows.h> causing compilation failure on mingw (#63) (@rezahousseini)
fixed CMake and pkg-config files not being installed into architecture-agnostic directories (#59) (@tambry)
fixed memory leak during parsing (#64) (@sneves)
fixed ambiguous operator== error on MSVC (#56) (@HellsingDarge)

Additions

added additional node_view constructors
added ability to specify serialization format of integer values
added integer value serialization format round trip (e.g. hex in, hex out)

Changes

updated conformance tests
TOML version bump to v1.0.0-rc.3
refactors and cleanups based on feedback given here

Build system

renamed build options to snake_case
tests, examples and cmake config now explicitly disabled when used as a subproject
removed small_binaries (it's now implicit when building as release)
bumped minimum meson version to 0.53

v2.1.0

Released 2020-07-11

Fixes

fixed inconsistent emission of leading/trailing newlines when writing a table to an ostream (#48) (@levicki)
fixed Wcast-align warning spam on ARM
fixed array::insert not working correctly in some cases
fixed node::value_or() not having the same semantics as node::value() (#50) (@whiterabbit963)
fixed 'misleading assignment' of rvalue node_views (#52) (@Reedbeta)
fixed some issues handling infinities and NaNs (#51) (@Reedbeta)
fixed some minor documentation issues

Additions

added support for __fp16, _Float16, __float128, __int128_t and __uint128_t
added copy construction/assignment for arrays, tables and values
added insert, emplace, push_back etc. compatibility with node_views
added node::is_homogenous
added table::is_homogenous
added value::is_homogenous (just for generic code's sake)
added is_homogenous overload for identifying failure-causing element
added implicit conversion operator from node to node_view (#52) (@Reedbeta)

Changes

renamed TOML_ALL_INLINE to TOML_HEADER_ONLY (the old name will still work, but is no longer documented)
general cleanup

v2.0.0

Released 2020-07-20

This release contains a fairly significant number of 'quality of life' improvements, yay! But also necessitates an ABI break (hence the version number bump). Changes that might block a migration are annotated with ⚠️.

Fixes

fixed infinity and NaN-related code breaking when using -ffast-math and friends
fixed narrowing conversion warnings when constructing int values from unsigned
fixed Visual Studio debugger native visualizations for date, time, time_offset, date_time
fixed some static assert messages being badly formatted on clang
fixed internal macro assert_or_assume leaking out of toml_parser.hpp

Additions

added additional types allowed in node::value() and node::value_or() (see value() dox for examples)
added additional types allowed in node_view::value() and node_view::value_or()
added node::value_exact() and node_view::value_exact()
added support for interop with wide strings on Windows:
- added wide-string path arg overloads of parse() and parse_file()
- added wide-string support to all relevant table and array ops
- added wide-string support to node::value(), node::value_or()
- added wide-string support to node_view::value(), node_view::value_or()
- added wide-string support to value<string> constructor
- added wide-string overloads of node_view::operator[]
- added source_region::wide_path()
- added TOML_WINDOWS_COMPAT switch for explicitly enabling/disabling this stuff
added emission of 'literal' strings to the TOML serializer
added lots of minor documentation fixes and improvements
added Visual Studio debugger native visualizations for table, array, parse_result, and parse_error (#46) (@Reedbeta)
added non-template version of array::is_homogeneous()
added explicit instantiations of more template types when !TOML_ALL_INLINE

Changes

⚠️ deprecated parse_result::get() in favour of parse_result::table()
⚠️ deprecated node_view::get() in favour of node_view::node()
⚠️ simplified internal ABI namespaces
improved the quality of many static_assert error messages

Removals

⚠️ renamed date_time::time_offset to just 'offset'
⚠️ removed TOML_CHAR_8_STRINGS since it no longer makes sense

v1.3.3

Released 2020-06-29

Fixes

fixed some minor TOML spec conformance bugs
fixed BOM check causing EOF on very short iostream inputs
fixed std::numeric_limits::max() getting broken by macros in some environments
fixed 'unknown pragma' warning spam in older versions of GCC
fixed a few minor documentation issues

Additions

added rvalue overload of array::flatten
added conformance tests from BurntSushi/toml-test and iarna/toml-spec-tests
added toml::inserter as a workaround for nested construction of single-element toml::arrays performing move-construction instead
added license boilerplate to test files

Changes

refactored the parser to reduce binary size

v1.3.2

Released 2020-06-19

Fixes

fixed single-digit negative integers parsing as positive
fixed parse failure when parsing an empty file
fixed multi-line strings being allowed in keys
fixed overflow for very long binary integer literals

Changes

improved the performance of toml::parse_file
improved the performance of printing to streams for deepy-nested TOML data

v1.3.0

Released 2020-06-02

Fixes

fixed formatter::print_inline() causing compilation failures in DLL builds
fixed BOMs occasionally causing overflow/crash in char8 mode
fixed some spurious warnings in GCC 10
fixed clang static analyzer warning in BOM handling code

Additions

added table_iterator::operator ->
added array::resize() and array::truncate()
added array::capacity(), array::shrink_to_fit(), array::max_size()
added non-const -> const conversion for table and array iterators

Changes

renamed table iterator proxy pair members to first and second to match STL

v1.2.5

Released 2020-04-24

Fixes

fixed some multi-line string parsing issues
fixed pedantic warnings on gcc 10 and clang 11
fixed is_unicode_XXXXXX functions being wrong in some cases
fixed TOML_LIKELY not being correct on older versions of gcc and clang
fixed minor documentation issues (#26, #38) (@prince-chrismc)

Additions

added additional error message cases to the parser
added error_printer example
added toml_generator example

Changes

improved unicode-related codegen

v1.2.3

Released 2020-04-11

Fixes

fixed printing of inf and nan
fixed parser not handling floats with leading '.' characters
fixed pedantic vtable warnings on clang with -Weverything
fixed a number of documentation bugs
fixed TOML_UNRELEASED_FEATURES default being 1 (it should have been 0)

Additions

added TOML_PARSER configuration option
added TOML_LIB_SINGLE_HEADER indicator
added doxygen page for the configuration options
added SPDX-License-Identifiers around the place

Changes

split some header files up to make future maintenance easier
refactored and greatly simplified parser

v1.2.0

Released 2020-04-07

Fixes

fixed some parsing and printing ops being locale-dependent
fixed some parsing errors at EOF when TOML_EXCEPTIONS = 0
fixed some unreferenced variable warnings on older compilers
fixed some 'maybe-uninitialized' false-positives on GCC9
fixed pkgconfig subdir being wrong

Additions

added support for implementations without <charconv>
added cmake package config generator (#22) (@GiulioRomualdi)
added build config feature option GENERATE_CMAKE_CONFIG
added many new tests

v1.1.0

Released 2020-04-03

Fixes

fixed some parser error paths not returning early enough TOML_EXCEPTIONS=0
fixed a number of minor documentation issues

Additions

added support for TOML 1.0.0-rc.1 🎉
added operator[], begin(), end() to toml::parse_result for TOML_EXCEPTIONS=0
added additional compilation speed improvements for TOML_ALL_INLINE=0
added more specific error messages for parsing errors relating to prohibited codepoints
added a large number of additional tests
added support for installation with meson (#16) (@ximion)
added the array and table iterators to the toml namespace

v1.0.0

Released 2020-03-28

Fixes

fixed minor documentation issues

Changes

refactoring of ABI-based inline namespaces

v0.6.0

Released 2020-03-24

Fixes

fixed minor preprocessor/macro issues
fixed minor documentation issues

Additions

added <cassert> include directly in 'debug' builds when TOML_ASSERT isn't defined
added Clang's [[trivial_abi]] attribute to date, time, time_offset

v0.5.0

Released 2020-03-18

Fixes

fixed crash when reaching EOF while parsing a string when exceptions are disabled
fixed some attribute warnings in GCC
fixed build with GCC 8.2.0 (#15) (@shdnx)
fixed exception mode detection sometimes being incorrect on MSVC
fixed compilation on older implementations without std::launder
fixed json_formatter type deduction on older compilers

Additions

added support for Unicode 13.0
added support for \xHH escape sequences (toml/pull/796)
added short-form license preamble to all source files
added build configuration option for compiling examples

v0.4.3

Released 2020-03-10

Fixes

fixed ICE in VS2019 when using /std:c++17 instead of /std:c++latest

Additions

added #error when TOML_EXCEPTIONS is set to 1 but compiler exceptions were disabled

Changes

parsing performance improvements

v0.4.0

Released 2020-03-05

Fixes

fixed parse_file() failing to compile with plain string literals
fixed tests being built when used as a meson subproject (#14) (@shdnx)

Additions

added support for compiling into DLLs on windows (TOML_API)
added support for explicitly setting the TOML_EXCEPTION mode
added TOML_OPTIONAL_TYPE customization point
added node::ref() and node_view::ref()

v0.3.0

Released 2020-03-01

Fixes

fixed some pedantic clang warnings
fixed some minor documentation errors

Additions

added node::value() and node::value_or()
added node_view::value()
added relops for the date/time classes
added TOML_ALL_INLINE and TOML_IMPLEMENTATION options
added preliminary support for ICC

Removals

removed <cmath> dependency

v0.2.1

Released 2020-02-26

Fixes

fixed minor printing bug in operator<<(ostream, source_position)
fixed minor documentation issues

Additions

added operator<<(ostream&, parse_error)

Changes

improved quality of error messages for boolean and inf/nan parsing

v0.2.0

Released 2020-02-23

Fixes

fixed truncation of floating-point values when using ostreams
fixed missing value deduction guides for dates and times
fixed potential ODR issues relating to exception mode handling etc.
fixed some documentation issues

Additions

added serialization round-trip tests
added node::is_number()
added node_view::is_number()
added node_view::value_or()
added hexfloat parsing support for all implementations (not just <charconv> ones)

v0.1.0

Released 2020-02-20

First public release, yay! 🎉️

Files

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CHANGELOG.md

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Changelog

Unreleased

Fixes

v3.4.0

Fixes

Additions

Changes

Build system

v3.3.0

Fixes

Additions

Removals

Build system

v3.2.0

Fixes

Additions

Changes

v3.1.0

Fixes

Additions

Removals/Deprecations

Build system

v3.0.1

Fixes

v3.0.0

Fixes

Additions

Changes

Removals

Build system

v2.5.0

Fixes

Additions

Changes

v2.4.0

Fixes

Additions

Removals

v2.3.0

Fixes

v2.2.0

Fixes

Additions

Changes

Build system

v2.1.0

Fixes

Additions

Changes

v2.0.0

Fixes

Additions

Changes

Removals

v1.3.3

Fixes

Additions

Changes

v1.3.2

Fixes

Changes

v1.3.0

Fixes

Additions

Changes

v1.2.5

Fixes

Additions

Changes

v1.2.3

Fixes

Additions

Changes

v1.2.0