[all-commits] [llvm/llvm-project] e9e6e3: [clang-format] Add IndentPragma style to eliminate...

[MyDeveloperDay via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e9e6e3b34a8e0857a274df51aac27e88c1de402b
      https://github.com/llvm/llvm-project/commit/e9e6e3b34a8e0857a274df51aac27e88c1de402b
  Author: mydeveloperday <mydeveloperday at gmail.com>
  Date:   2020-12-10 (Thu, 10 Dec 2020)

  Changed paths:
    M clang/docs/ClangFormatStyleOptions.rst
    M clang/include/clang/Format/Format.h
    M clang/lib/Format/ContinuationIndenter.cpp
    M clang/lib/Format/Format.cpp
    M clang/lib/Format/UnwrappedLineFormatter.cpp
    M clang/lib/Format/UnwrappedLineParser.cpp
    M clang/lib/Format/UnwrappedLineParser.h
    M clang/unittests/Format/FormatTest.cpp

  Log Message:
  -----------
  [clang-format] Add IndentPragma style to eliminate common clang-format off scenario

A quick search of github.com, shows one common scenario for excessive use of //clang-format off/on is the indentation of #pragma's, especially around the areas of loop optimization or OpenMP

This revision aims to help that by introducing an `IndentPragmas` style, the aim of which is to keep the pragma at the current level of scope

```
    for (int i = 0; i < 5; i++) {
// clang-format off
        #pragma HLS UNROLL
        // clang-format on
        for (int j = 0; j < 5; j++) {
// clang-format off
            #pragma HLS UNROLL
            // clang-format on
     ....
```

can become

```
    for (int i = 0; i < 5; i++) {
        #pragma HLS UNROLL
        for (int j = 0; j < 5; j++) {
            #pragma HLS UNROLL
        ....
```

This revision also support working alongside the `IndentPPDirective` of `BeforeHash` and `AfterHash` (see unit tests for examples)

Reviewed By: curdeius

Differential Revision: https://reviews.llvm.org/D92753