.clang-format

#
# The clang-format (Clang 16) style file used by deal.II.
# Slightly modified to be used in Lethe
#

AccessModifierOffset: -2

AlignAfterOpenBracket: Align
AlignConsecutiveAssignments: true
AlignConsecutiveDeclarations: true
AlignEscapedNewlines: Left
AlignOperands: true
AlignTrailingComments: true

AllowAllParametersOfDeclarationOnNextLine: false
AllowShortBlocksOnASingleLine: false
AllowShortCaseLabelsOnASingleLine: false
AllowShortFunctionsOnASingleLine: None
AllowShortIfStatementsOnASingleLine: false
AllowShortLoopsOnASingleLine: false

AlwaysBreakAfterReturnType: All
AlwaysBreakBeforeMultilineStrings: false
AlwaysBreakTemplateDeclarations: true

BinPackArguments: false
BinPackParameters: false

BraceWrapping:
  AfterCaseLabel: true
  AfterClass: true
  AfterControlStatement: Always
  AfterEnum: true
  AfterExternBlock: true
  AfterFunction: true
  AfterNamespace: true
  AfterStruct: true
  AfterUnion: true
  BeforeCatch: true
  BeforeElse: true
  BeforeLambdaBody: false
  BeforeWhile: true
  IndentBraces: true
  SplitEmptyFunction: false
  SplitEmptyRecord: false
  SplitEmptyNamespace: false

BreakBeforeBinaryOperators: None
BreakBeforeBraces: Custom
BreakBeforeInheritanceComma: false
BreakBeforeTernaryOperators: false
BreakConstructorInitializers: BeforeComma
BreakStringLiterals: false

ColumnLimit: 80

CompactNamespaces: false

ConstructorInitializerIndentWidth: 2

ContinuationIndentWidth: 2

Cpp11BracedListStyle: true

DerivePointerAlignment: false

FixNamespaceComments: true

IncludeBlocks: Regroup
IncludeCategories:
# config.h must always be first:
  - Regex:    "deal.II/base/config.h"
    Priority: -1

# Lethe folders in a specific order
  - Regex:    "core/.*\\.h"
    Priority: 101
  - Regex:    "solvers/.*\\.h"
    Priority: 102
  - Regex:    "dem/.*\\.h"
    Priority: 103
  - Regex:    "fem-dem/.*\\.h"
    Priority: 104

# deal.II folders in sorted order:
  - Regex:    "deal.II/algorithms/.*\\.h"
    Priority: 110
  - Regex:    "deal.II/base/.*\\.h"
    Priority: 120
  - Regex:    "deal.II/boost_adaptors/.*\\.h"
    Priority: 125
  - Regex:    "deal.II/differentiation/.*\\.h"
    Priority: 130
  - Regex:    "deal.II/distributed/.*\\.h"
    Priority: 140
  - Regex:    "deal.II/dofs/.*\\.h"
    Priority: 150
  - Regex:    "deal.II/fe/.*\\.h"
    Priority: 160
  - Regex:    "deal.II/gmsh/.*\\.h"
    Priority: 170
  - Regex:    "deal.II/grid/.*\\.h"
    Priority: 180
  - Regex:    "deal.II/hp/.*\\.h"
    Priority: 190
  - Regex:    "deal.II/integrators/.*\\.h"
    Priority: 200
  - Regex:    "deal.II/lac/.*\\.h"
    Priority: 210
  - Regex:    "deal.II/matrix_free/.*\\.h"
    Priority: 220
  - Regex:    "deal.II/meshworker/.*\\.h"
    Priority: 230
  - Regex:    "deal.II/multigrid/.*\\.h"
    Priority: 240
  - Regex:    "deal.II/non_matching/.*\\.h"
    Priority: 250
  - Regex:    "deal.II/numerics/.*\\.h"
    Priority: 260
  - Regex:    "deal.II/opencascade/.*\\.h"
    Priority: 270
  - Regex:    "deal.II/optimization/.*\\.h"
    Priority: 280
  - Regex:    "deal.II/particles/.*\\.h"
    Priority: 290
  - Regex:    "deal.II/physics/.*\\.h"
    Priority: 300
  - Regex:    "deal.II/sundials/.*\\.h"
    Priority: 310
# put boost right after deal:
  - Regex: "<boost.*>"
    Priority: 500
# try to group PETSc headers:
  - Regex: "<petsc.*\\.h>"
    Priority: 1000
# try to catch all third party headers and put them after deal.II but before
# standard headers:
  - Regex: "<.*\\.(h|hpp|hxx)>"
    Priority: 2000
# match all standard headers. Things like '#include <armadillo>' should be
# surrounded by #ifdef checks (which will not be merged by clang-format) so they
# should not be caught here
  - Regex: "<[a-z_]+>"
    Priority: 100000

IndentCaseLabels: true
IndentPPDirectives: AfterHash
IndentWidth: 2

IndentWrappedFunctionNames: false

KeepEmptyLinesAtTheStartOfBlocks: false

Language: Cpp

MaxEmptyLinesToKeep: 3

NamespaceIndentation: All

PenaltyBreakBeforeFirstCallParameter: 90

PointerAlignment: Right

ReflowComments: true
CommentPragmas: '( \| |\*--|<li>|@ref | @p |@param |@name |@returns |@warning |@ingroup |@author |@date |@related |@relates |@relatesalso |@deprecated |@image |@return |@brief |@attention |@copydoc |@addtogroup |@todo |@tparam |@see |@note |@skip |@skipline |@until |@line |@dontinclude |@include)'

SortIncludes: true
SortUsingDeclarations: true

SpaceAfterCStyleCast: false
SpaceAfterTemplateKeyword: true
SpaceBeforeAssignmentOperators: true
SpaceBeforeParens: ControlStatements
SpaceInEmptyParentheses: false
SpacesBeforeTrailingComments: 1
SpacesInAngles: false
SpacesInCStyleCastParentheses: false
SpacesInContainerLiterals: false
SpacesInParentheses: false
SpacesInSquareBrackets: false

Standard: c++20

TabWidth: 2

UseTab: Never