.clang-format for Rust style (rustfmt)

.clang-format

AccessModifierOffset: -2
AlignAfterOpenBracket: BlockIndent    # New in v14. For earlier clang-format versions, use AlwaysBreak instead.
AlignConsecutiveMacros: false
AlignConsecutiveAssignments: false
AlignConsecutiveDeclarations: false
AlignEscapedNewlines: DontAlign
AlignOperands: false
AlignTrailingComments: false
AllowAllArgumentsOnNextLine: false
AllowAllConstructorInitializersOnNextLine: false
AllowAllParametersOfDeclarationOnNextLine: false
AllowShortBlocksOnASingleLine: Empty
AllowShortCaseLabelsOnASingleLine: false
AllowShortFunctionsOnASingleLine: Empty
AllowShortIfStatementsOnASingleLine: Never
AllowShortLambdasOnASingleLine: All
AllowShortLoopsOnASingleLine: false
AlwaysBreakAfterReturnType: None
AlwaysBreakBeforeMultilineStrings: true
AlwaysBreakTemplateDeclarations: Yes
BinPackArguments: false
BinPackParameters: false
BreakBeforeBinaryOperators: NonAssignment
BreakBeforeBraces: Attach
BreakBeforeTernaryOperators: true
BreakConstructorInitializers: AfterColon
BreakInheritanceList: AfterColon
BreakStringLiterals: false
ColumnLimit: 80
CompactNamespaces: false
ConstructorInitializerAllOnOneLineOrOnePerLine: true
ConstructorInitializerIndentWidth: 4
ContinuationIndentWidth: 4
Cpp11BracedListStyle: true
DerivePointerAlignment: false
FixNamespaceComments: true
IncludeBlocks: Regroup
IncludeCategories:
  - Regex:           '^<ext/.*\.h>'
    Priority:        2
    SortPriority:    0
    CaseSensitive:   false
  - Regex:           '^<.*\.h>'
    Priority:        1
    SortPriority:    0
    CaseSensitive:   false
  - Regex:           '^<.*'
    Priority:        2
    SortPriority:    0
    CaseSensitive:   false
  - Regex:           '.*'
    Priority:        3
    SortPriority:    0
    CaseSensitive:   false
IncludeIsMainRegex: '([-_](test|unittest))?$'
IndentCaseLabels: true
IndentPPDirectives: BeforeHash
IndentWidth: 4
IndentWrappedFunctionNames: false
KeepEmptyLinesAtTheStartOfBlocks: false
MaxEmptyLinesToKeep: 1
NamespaceIndentation: Inner
PointerAlignment: Left
ReferenceAlignment: Left              # New in v13. int &name  ==>  int& name
ReflowComments: false
SeparateDefinitionBlocks: Always      # New in v14.
SortIncludes: true
SortUsingDeclarations: true
SpaceAfterCStyleCast: false
SpaceAfterLogicalNot: false
SpaceAfterTemplateKeyword: false
SpaceBeforeAssignmentOperators: true
SpaceBeforeCpp11BracedList: true
SpaceBeforeCtorInitializerColon: true
SpaceBeforeInheritanceColon: false
SpaceBeforeParens: ControlStatements
SpaceBeforeRangeBasedForLoopColon: true
SpaceInEmptyParentheses: false
SpacesBeforeTrailingComments: 1
SpacesInAngles: false
SpacesInCStyleCastParentheses: false
SpacesInContainerLiterals: false
SpacesInParentheses: false
SpacesInSquareBrackets: false
Standard: Cpp11
TabWidth: 4
UseTab: Never

thank you so much for this :)

@YodaEmbedding According to https://doc.rust-lang.org/nightly/style-guide/#comments, SpacesBeforeTrailingComments should be set to 1, not 2; to quote: “Prefer to put a comment on its own line. Where a comment follows code, put a single space before it. […]”.

Setting this to 1 also incidentally fixes the formatting of said comments for me when using tabs instead of spaces.

Here's a more rust-like .clang-format in https://gist.github.com/julyfun/8a739e0529818a4a41bf1762e6859fbf

I created this after reading through https://doc.rust-lang.org/nightly/style-guide , as well as a rust-like .clang-tidy here: https://github.com/SJTU-RoboMaster-Team/style-team/blob/main/.clang-tidy

@julyfun Awesome, thanks for sharing! By the way, it appears that Cpp11 is a deprecated alias for Latest, so it's probably best to avoid using it: https://clang.llvm.org/docs/ClangFormatStyleOptions.html#standard

Edit: Also, according to the documentation above, AllowAllConstructorInitializersOnNextLine and ConstructorInitializerAllOnOneLineOrOnePerLine are also deprecated.