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glibc/.clang-format

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Add .clang-format style file Went with version >= 11.0 since it covers most of the major features and should be pretty universally accessibly. There are some issues: 1. indention of preprocessor directives: Unfortunately there doesn't appear to be a switch for a seperate 'IndentWidth' for preprocessor directives vs. normal code so we are stuck either not indenting the directives or over-indenting them. i.e: Desired: ``` #ifndef A # define B #endif ``` Options: ``` #ifndef A # define B /* Two spaces instead of one. */ #endif #ifndef C #define D /* No spaces. */ #endif ``` Chose to over-indent as it generally seems easier to script halving all pre-processor indentations than counting the nested depth and indenting from scratch. 2. concatenation of lines missing semi-colons: Throughout glibc there are macros used to setup aliasing that are outside of functions and don't end in semi-colons i.e: ``` libc_hidden_def (__pthread_self) weak_alias (__pthread_self, pthread_self) ``` clang-format reformats lines like these to: ``` libc_hidden_def (__pthread_self) weak_alias (__pthread_self, pthread_self) ``` which is generally undesirable. Other than those two big concerns there are certainly some questions diffs but for the most part it creates a easy to read and consistent style. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2022-04-04 16:56:46 +00:00
# clang-format file for GLIBC
Update copyright dates with scripts/update-copyrights
2023-01-06 21:08:04 +00:00
# Copyright (C) 2022-2023 Free Software Foundation, Inc.
Add .clang-format style file Went with version >= 11.0 since it covers most of the major features and should be pretty universally accessibly. There are some issues: 1. indention of preprocessor directives: Unfortunately there doesn't appear to be a switch for a seperate 'IndentWidth' for preprocessor directives vs. normal code so we are stuck either not indenting the directives or over-indenting them. i.e: Desired: ``` #ifndef A # define B #endif ``` Options: ``` #ifndef A # define B /* Two spaces instead of one. */ #endif #ifndef C #define D /* No spaces. */ #endif ``` Chose to over-indent as it generally seems easier to script halving all pre-processor indentations than counting the nested depth and indenting from scratch. 2. concatenation of lines missing semi-colons: Throughout glibc there are macros used to setup aliasing that are outside of functions and don't end in semi-colons i.e: ``` libc_hidden_def (__pthread_self) weak_alias (__pthread_self, pthread_self) ``` clang-format reformats lines like these to: ``` libc_hidden_def (__pthread_self) weak_alias (__pthread_self, pthread_self) ``` which is generally undesirable. Other than those two big concerns there are certainly some questions diffs but for the most part it creates a easy to read and consistent style. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2022-04-04 16:56:46 +00:00
# This file is part of the GNU C Library.
#
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <https://www.gnu.org/licenses/>.
#
# Requires clang-format version >= 11.0
#
# For more information, see:
#
# https://clang.llvm.org/docs/ClangFormat.html
# https://clang.llvm.org/docs/ClangFormatStyleOptions.html
#
# There are some known cases that this doesn't produce the desired
# style (i.e Preprocessor Directives are over-indented and not
# auto-commented). As a result, this is meant to be a utility to make
# formatting easier, not a definitive standard.
#
# To format the current git diff inplace (-i) the follow command can
# be used:
# $> git diff -U0 --no-color HEAD^ | clang-format-diff -i -p1
#
# To just view the diff clang-format would generate:
# $> git diff -U0 --no-color HEAD^ | clang-format-diff -p1
#
# NB: clang-format-diff, along with other clang-format related tools,
# can be found at: /path/to/llvm-project/clang/tools/clang-format/
#
#
# Based on autogenerated format from:
# $> clang-format --style=GNU -dump-config
---
AccessModifierOffset: -2
AlignAfterOpenBracket: Align
AlignConsecutiveMacros: false
AlignConsecutiveAssignments: false
AlignConsecutiveBitFields: false
AlignConsecutiveDeclarations: false
AlignEscapedNewlines: Right
AlignOperands: true
AlignTrailingComments: true
AllowAllArgumentsOnNextLine: true
AllowAllParametersOfDeclarationOnNextLine: true
AllowShortEnumsOnASingleLine: true
AllowShortBlocksOnASingleLine: false
AllowShortCaseLabelsOnASingleLine: false
AllowShortFunctionsOnASingleLine: All
AllowShortLambdasOnASingleLine: All
AllowShortIfStatementsOnASingleLine: Never
AllowShortLoopsOnASingleLine: false
AlwaysBreakAfterDefinitionReturnType: All
AlwaysBreakAfterReturnType: AllDefinitions
AlwaysBreakBeforeMultilineStrings: false
BinPackArguments: true
BinPackParameters: true
BraceWrapping:
AfterCaseLabel: true
AfterClass: true
AfterControlStatement: true
AfterEnum: true
AfterFunction: true
AfterNamespace: true
AfterStruct: true
AfterUnion: true
AfterExternBlock: true
BeforeCatch: true
BeforeElse: true
BeforeWhile: true
IndentBraces: true
SplitEmptyFunction: true
SplitEmptyRecord: true
SplitEmptyNamespace: true
BreakBeforeBinaryOperators: All
BreakBeforeBraces: GNU
BreakBeforeInheritanceComma: false
BreakInheritanceList: BeforeColon
BreakBeforeTernaryOperators: true
BreakStringLiterals: true
ColumnLimit: 79
CommentPragmas: '^ IWYU pragma:'
CompactNamespaces: false
ContinuationIndentWidth: 4
Cpp11BracedListStyle: false
DeriveLineEnding: true
DerivePointerAlignment: false
DisableFormat: false
ExperimentalAutoDetectBinPacking: false
FixNamespaceComments: false
IncludeBlocks: Preserve
IncludeCategories:
- Regex: '.*'
Priority: 1
IncludeIsMainRegex: '(Test)?$'
IndentCaseLabels: false
IndentCaseBlocks: false
IndentGotoLabels: true
IndentWidth: 2
IndentPPDirectives: AfterHash
IndentExternBlock: AfterExternBlock
IndentWrappedFunctionNames: false
InsertTrailingCommas: None
KeepEmptyLinesAtTheStartOfBlocks: true
MacroBlockBegin: ''
MacroBlockEnd: ''
MaxEmptyLinesToKeep: 1
NamespaceIndentation: None
PenaltyBreakAssignment: 2
PenaltyBreakBeforeFirstCallParameter: 19
PenaltyBreakComment: 300
PenaltyBreakFirstLessLess: 120
PenaltyBreakString: 1000
PenaltyExcessCharacter: 1000000
PenaltyReturnTypeOnItsOwnLine: 60
PointerAlignment: Right
ReflowComments: true
SortIncludes: false
SortUsingDeclarations: true
SpaceAfterCStyleCast: true
SpaceAfterLogicalNot: false
SpaceBeforeAssignmentOperators: true
SpaceBeforeCpp11BracedList: false
SpaceBeforeCtorInitializerColon: true
SpaceBeforeInheritanceColon: true
SpaceBeforeParens: Always
SpaceBeforeRangeBasedForLoopColon: true
SpaceInEmptyBlock: false
SpaceInEmptyParentheses: false
SpacesBeforeTrailingComments: 1
SpacesInAngles: false
SpacesInConditionalStatement: false
SpacesInContainerLiterals: true
SpacesInCStyleCastParentheses: false
SpacesInParentheses: false
SpacesInSquareBrackets: false
SpaceBeforeSquareBrackets: false
Standard: Cpp03
TabWidth: 8
UseTab: Always
ForEachMacros:
- 'FOR_EACH_IMPL'
- 'list_for_each'
- 'list_for_each_prev'
- 'list_for_each_prev_safe'
...
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