.clang-format

# This file is part of eRCaGuy_dotfiles: https://github.com/ElectricRCAircraftGuy/eRCaGuy_dotfiles
#
# ==================================================================================================
# It is a custom file to represent my (Gabriel Staples's) CUSTOM FORMATTING PREFERENCES FOR C & C++!
# ==================================================================================================
# It was first generated with `clang-format --style=google --dump-config > .clang-format_google`.
# Then, I modified it from there. 
# To use it, rename it to just plain ".clang-format": `mv .clang-format_custom .clang-format`.
#
# References:
# 1. https://clang.llvm.org/docs/ClangFormat.html
# 2. "eRCaGuy_dotfiles/git & Linux cmds, help, tips & tricks - Gabriel.txt"
# 3. Clang-Format Style Options: https://clang.llvm.org/docs/ClangFormatStyleOptions.html
#    - Oops! This documentation is for clang-format version 11, but my version is 6; here's
#      the documentation for version 6!:
#      https://releases.llvm.org/6.0.1/tools/clang/docs/ClangFormatStyleOptions.html <===== USE 
#      THIS! ===
# 4. .clang-format interactive guide and builder! [very useful!--but is a little out-dated & 
#    missing many options]: https://clangformat.com/
# 
# "The .clang-format file uses YAML format:" `key1: value1`
#
# To turn off clang formatting in a given section of C/C++ source code, do the following:
#       // clang-format off
#       // (this section of code will not be formatted)
#       // clang-format on
#
# Tab size/indentation note: 
# - If using the Arduino IDE, change your tab size from 2 to 4 by going 
# to File --> Preferences --> look at the bottom of the window for "More preferences can be
# edited directly in the file...". Clicking on this file link in the Arduino IDE should open up 
# your file manager to this directory where Arduino's "preferences.txt" file is stored. Close 
# the Arduino IDE, then open that "preferences.txt" file to edit it. On Linux Ubuntu 18.04 
# for me, it is in "/home/gabriel/.arduino15/preferences.txt". 
# Simply change the line that says `editor.tabs.size=2` to `editor.tabs.size=4`. Now your tab
# size is set to 4 spaces instead of 2 spaces. Done!
#
# Just get a good editor!:
# - Even better, however, is to just use an external editor instead, such as Eclipse or Sublime
# Text 3, but still build in the Arduino IDE. In the Arduino IDE, go to File --> Preferences --> 
# check the box for "Use external editor". I use both Sublime and Eclipse together, simultaneously.
#   - Eclipse setup: see my PDF setup instructions guide in this repository folder here: 
#     https://github.com/ElectricRCAircraftGuy/eRCaGuy_dotfiles/tree/master/eclipse
#     It was last named "Eclipse setup instructions on a new Linux (or other OS) computer.pdf".
#     Eclipse has perhaps the most powerful code indexer in the entire industry, so I highly
#     recommend checking it out and starting to use it. It makes browsing the entire Arduino
#     source code, for instance, sooooo much easier! From inside a .ino file in a project of mine,
#     I can just Ctrl + Click on `pinMode()`, for instance, and it magically jumps to the
#     "arduino/hardware/arduino/avr/cores/arduino/wiring_digital.c" file and shows the definition
#     of `pinMode()`. Alt + Left Arrow jumps back. 
#     If I right-click on `setup()`, then select "Open Call Hierarchy", then double-click on 
#     "main()" in the little window that pops up at the bottom, it automatically jumps to the 
#     call site for the Arduino `setup()` function, which is inside the C++ `main()` function
#     defined in "arduino/hardware/arduino/avr/cores/arduino/main.cpp". This is a just a glimpse
#     into its power! See my full setup guide referenced above. 
#   - Sublime Text 3: download here (Windows, Mac, Linux): https://www.sublimetext.com/3.
#     Learn to harness its power with the masterful Sublime Tutor tutorial: 
#     https://sublimetutor.com/
#
# Sample style guides: 
# 1. "Google C++ Style Guide": https://google.github.io/styleguide/cppguide.html
# 2. "Linux kernel coding style" guide: 
#    https://www.kernel.org/doc/Documentation/process/coding-style.rst

---
Language:        Cpp
# BasedOnStyle:  Google (with heavy modifications, the biggest one being setting braces to
# `BreakBeforeBraces: Allman`)
AccessModifierOffset: -2
AlignAfterOpenBracket: Align
AlignConsecutiveAssignments: false
AlignConsecutiveDeclarations: false
# AlignConsecutiveMacros: false
AlignEscapedNewlines: Left
AlignOperands:   true
AlignTrailingComments: true
# AllowAllArgumentsOnNextLine: false
# AllowAllConstructorInitializersOnNextLine : false
AllowAllParametersOfDeclarationOnNextLine: false
AllowShortBlocksOnASingleLine: false # Empty <== use on later clang-format versions
AllowShortCaseLabelsOnASingleLine: false
AllowShortFunctionsOnASingleLine: None
AllowShortIfStatementsOnASingleLine: false # Never <== use on later clang-format versions
# AllowShortLambdasOnASingleLine: Empty
AllowShortLoopsOnASingleLine: false
AlwaysBreakAfterReturnType: None
AlwaysBreakBeforeMultilineStrings: false
AlwaysBreakTemplateDeclarations: true # Yes <== use on later clang-format versions
BinPackArguments: true
BinPackParameters: true
# Per the documentation, this BraceWrapping section is only used if BreakBeforeBraces is set 
# to Custom.
# BraceWrapping:   
#   AfterClass:      false
#   AfterControlStatement: false
#   AfterEnum:       false
#   AfterFunction:   false
#   AfterNamespace:  false
#   AfterObjCDeclaration: false
#   AfterStruct:     false
#   AfterUnion:      false
#   AfterExternBlock: false
#   BeforeCatch:     false
#   BeforeElse:      false
#   IndentBraces:    false
#   SplitEmptyFunction: true
#   SplitEmptyRecord: true
#   SplitEmptyNamespace: true
BreakBeforeBinaryOperators: NonAssignment
BreakBeforeBraces: Allman
# Not found in the docs; must be deprecated?:
# BreakBeforeInheritanceComma: false
BreakBeforeTernaryOperators: false
# Not found in the docs; must be deprecated?:
# BreakConstructorInitializersBeforeComma: false
BreakConstructorInitializers: AfterColon
# Not found in the docs; must be deprecated?:
# BreakAfterJavaFieldAnnotations: false
# BreakInheritanceList: AfterColon
BreakStringLiterals: true
ColumnLimit:     100
CommentPragmas:  '^ IWYU pragma:'
CompactNamespaces: false
ConstructorInitializerAllOnOneLineOrOnePerLine: true
ConstructorInitializerIndentWidth: 4
ContinuationIndentWidth: 4
Cpp11BracedListStyle: true
# Note: see PointerAlignment too, as it's used as fallback in case deriving the pointer alignment
# fails
DerivePointerAlignment: true
DisableFormat:   false
ExperimentalAutoDetectBinPacking: false
FixNamespaceComments: true
ForEachMacros:   
  - foreach
  - Q_FOREACH
  - BOOST_FOREACH
IncludeBlocks:   Preserve
IncludeCategories: 
  - Regex:           '^<ext/.*\.h>'
    Priority:        2
  - Regex:           '^<.*\.h>'
    Priority:        1
  - Regex:           '^<.*'
    Priority:        2
  - Regex:           '.*'
    Priority:        3
IncludeIsMainRegex: '([-_](test|unittest))?$'
# I can add this one too if I want, but I'd need to specify a value:
# IncludeIsMainSourceRegex: 
# IndentCaseBlocks: false
# true: same as Arduino does: 
# https://www.arduino.cc/reference/tr/language/structure/control-structure/switchcase/
IndentCaseLabels: false # prefer `true` if using a tab size of 2, `false` for 4
# IndentGotoLabels: false
IndentPPDirectives: AfterHash # BeforeHash <== use on later clang-format versions
IndentWidth:     4
IndentWrappedFunctionNames: false
JavaScriptQuotes: Leave
JavaScriptWrapImports: true
KeepEmptyLinesAtTheStartOfBlocks: false
# For the `Language` key/value, see the very top of this configuration list
MacroBlockBegin: ''
MacroBlockEnd:   ''
MaxEmptyLinesToKeep: 1
NamespaceIndentation: None
# Not used: NameSpaceMacros
# Not used: ObjCBinPackProtocolList
ObjCBlockIndentWidth: 2
# Not used: ObjCBreakBeforeNestedBlockParam
ObjCSpaceAfterProperty: false
ObjCSpaceBeforeProtocolList: false
PenaltyBreakAssignment: 2
PenaltyBreakBeforeFirstCallParameter: 1
PenaltyBreakComment: 300
PenaltyBreakFirstLessLess: 120
PenaltyBreakString: 1000
# Not set, but could/should be: PenaltyBreakTemplateDeclaration
PenaltyExcessCharacter: 1000000
PenaltyReturnTypeOnItsOwnLine: 200
# Note: see DerivePointerAlignment too, as it takes precedence
PointerAlignment: Left
RawStringFormats: 
  - Delimiter:       pb
    Language:        TextProto
    BasedOnStyle:    google
ReflowComments:  true
SortIncludes:    true
SortUsingDeclarations: true
SpaceAfterCStyleCast: false
# SpaceAfterLogicalNot: false
SpaceAfterTemplateKeyword: true
SpaceBeforeAssignmentOperators: true
# SpaceBeforeCpp11BracedList: true
# SpaceBeforeCtorInitializerColon: true
# SpaceBeforeInheritanceColon: true
SpaceBeforeParens: ControlStatements
# SpaceBeforeRangeBasedForLoopColon: true
# SpaceBeforeSquareBrackets: false
# SpaceInEmptyBlock: false
SpaceInEmptyParentheses: false
SpacesBeforeTrailingComments: 2
SpacesInAngles: false
SpacesInCStyleCastParentheses: false
# SpacesInConditionalStatement: false
SpacesInContainerLiterals: true
# Is alphabetically here, but in the documentation is earlier, so is already defined above:
# SpacesInCStyleCastParentheses
SpacesInParentheses: false
SpacesInSquareBrackets: false
Standard:        Auto
# Not used: StatementMacros
TabWidth:        8
# Not used: TypenameMacros
# Not set: UseCRLF
UseTab:          Never
...