.clang-format

---
# See https://releases.llvm.org/14.0.0/tools/clang/docs/ClangFormatStyleOptions.html
BasedOnStyle: Chromium
AccessModifierOffset: -4
AlignAfterOpenBracket: AlwaysBreak
# AlignArrayOfStructures can cause crashes, see https://github.com/llvm/llvm-project/issues/55269
#AlignArrayOfStructures: Left
AllowAllParametersOfDeclarationOnNextLine: false
AllowShortBlocksOnASingleLine: Empty
AllowShortFunctionsOnASingleLine: All
BinPackArguments: false
BinPackParameters: false
BreakBeforeBinaryOperators: NonAssignment
BreakBeforeBraces: Custom
BraceWrapping:
  # NB: due to https://github.com/llvm/llvm-project/issues/55582 the Multiline setting will not
  # always work (should be fixed in clang-format 15, but that is not available as a python wheel yet
  # due to https://github.com/ssciwr/clang-format-wheel/issues/49)
  AfterControlStatement: MultiLine # makes sure multiline ifs don't run into their bodies
  AfterFunction: true # makes constructors with initialisers much nicer
BreakBeforeConceptDeclarations: true
BreakBeforeTernaryOperators: true
BreakConstructorInitializers: BeforeComma
BreakStringLiterals: true
ColumnLimit: 100
CompactNamespaces: true
ConstructorInitializerIndentWidth: 0
ContinuationIndentWidth: 4
Cpp11BracedListStyle: true
DerivePointerAlignment: false # force use of the PointerAlignment setting
FixNamespaceComments: true
IncludeBlocks : Regroup
IncludeCategories:
  # Aim is:
  # 0. the "main" header file (#include "foo.h" in foo.cpp) automatically gets priority 0
  # 1. internal headers (#include "util/helpers.h"): quotation marks, with a '/'
  # 2. third-party headers (#include <arrow/status.h>): angle brackets, '/' or .h/.hpp/.h++
  #    file ext
  # 3. standard library headers (#include <vector>): angle brackets, no file ext, no '/'
  - Regex:    '^"'
    Priority: 1
  - Regex:    '^<.*/'
    Priority: 2
  - Regex:    '\.h>'
    Priority: 2
  - Regex:    '\.hpp>'
    Priority: 2
  - Regex:    '\.h\+\+>'
    Priority: 2
IncludeIsMainRegex: '(_test|_tests|Tests|Test)?$'
  # foo.h will be considered the "main" header (and sorted to the top) for all of the following:
  # - foo.cpp
  # - foo_test.cpp
  # - foo_tests.cpp
  # - fooTests.cpp (although this is intended for Foo.h and FooTests.cpp)
  # - fooTest.cpp (although this is intended for Foo.h and FooTest.cpp)
IndentCaseLabels: false
IndentWidth: 4
PackConstructorInitializers: CurrentLine
PointerAlignment: Middle
QualifierAlignment: Right # const east
# clang 14 *should* know about QualifierOrder (according to its docs) but claims it doesn't
#QualifierOrder: ['static', 'constexpr', 'inline', 'type', 'const', 'volatile', 'restrict']
ReflowComments: false
SeparateDefinitionBlocks: Always
SortIncludes: CaseInsensitive
SortUsingDeclarations: true
SpaceAroundPointerQualifiers: Before
Standard: c++20