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Showing content from https://clang.llvm.org/doxygen/structclang_1_1tooling_1_1IncludeStyle.html below:

clang: clang::tooling::IncludeStyle Struct Reference

Style for sorting and grouping C++ #include directives. More...

#include "clang/Tooling/Inclusions/IncludeStyle.h"

Style for sorting and grouping C++ #include directives.

Definition at line 20 of file IncludeStyle.h.

Styles for sorting multiple #include blocks.

Sort each #include block separately.

#include "b.h" into #include "b.h"

#include <lib/main.h> #include "a.h"

#include "a.h" #include <lib/main.h>

Merge multiple #include blocks together and sort as one.

#include "b.h" into #include "a.h"

#include "b.h"

#include <lib/main.h> #include <lib/main.h>

#include "a.h"

Merge multiple #include blocks together and sort as one.

Then split into groups based on category priority. See IncludeCategories.

#include "b.h" into #include "a.h"

#include "b.h"

#include <lib/main.h>

#include "a.h" #include <lib/main.h>

Definition at line 22 of file IncludeStyle.h.

Character to consider in the include directives for the main header.

Main include uses quotes: #include "foo.hpp" (the default).

Main include uses angle brackets: #include <foo.hpp>.

Main include uses either quotes or angle brackets.

Definition at line 156 of file IncludeStyle.h.

Regular expressions denoting the different #include categories used for ordering #includes.

POSIX extended <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html>_ regular expressions are supported.

These regular expressions are matched against the filename of an include (including the <> or "") in order. The value belonging to the first matching regular expression is assigned and #includes are sorted first according to increasing category number and then alphabetically within each category.

If none of the regular expressions match, INT_MAX is assigned as category. The main header for a source file automatically gets category 0. so that it is generally kept at the beginning of the #includes (https://llvm.org/docs/CodingStandards.html#include-style). However, you can also assign negative priorities if you have certain headers that always need to be first.

There is a third and optional field SortPriority which can used while IncludeBlocks = IBS_Regroup to define the priority in which #includes should be ordered. The value of Priority defines the order of #include blocks and also allows the grouping of #includes of different priority. SortPriority is set to the value of Priority as default if it is not assigned.

Each regular expression can be marked as case sensitive with the field CaseSensitive, per default it is not.

To configure this in the .clang-format file, use:

IncludeCategories:

- Regex: '^"(llvm|llvm-c|clang|clang-c)/'

Priority: 2

SortPriority: 2

CaseSensitive: true

- Regex: '^((<|")(gtest|gmock|isl|json)/)'

Priority: 3

- Regex: '<[[:alnum:].]+>'

Priority: 4

- Regex: '.*'

Priority: 1

SortPriority: 0

Version

3.8

Definition at line 118 of file IncludeStyle.h.

Referenced by clang::format::getGoogleStyle(), clang::format::getLLVMStyle(), llvm::yaml::MappingTraits< FormatStyle >::mapping(), and clang::format::FormatStyle::operator==().

Specify a regular expression for files being formatted that are allowed to be considered "main" in the file-to-main-include mapping.

By default, clang-format considers files as "main" only when they end with: .c, .cc, .cpp, .c++, .cxx, .m or .mm extensions. For these files a guessing of "main" include takes place (to assign category 0, see above). This config option allows for additional suffixes and extensions for files to be considered as "main".

For example, if this option is configured to (Impl\.hpp)$, then a file ClassImpl.hpp is considered "main" (in addition to Class.c, Class.cc, Class.cpp and so on) and "main include file" logic will be executed (with IncludeIsMainRegex setting also being respected in later phase). Without this option set, ClassImpl.hpp would not have the main include file put on top before any other include.

Version

10

Definition at line 153 of file IncludeStyle.h.

Referenced by llvm::yaml::MappingTraits< FormatStyle >::mapping(), and clang::format::FormatStyle::operator==().

The documentation for this struct was generated from the following file:

• include/clang/Tooling/Inclusions/IncludeStyle.h

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