[PATCH] [clang-tidy] Add check misc-braces-around-statements.

[Alexander Kornienko]

This looks good for the initial version once you address the comments.

I'd also ask you to run the check over LLVM source code as a smoke test and take a look at the changes the script produces (you can use the run-clang-tidy.py script for this). This can be done after submitting the code.

Thanks again for the great job!

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Comment at: clang-tidy/misc/BracesAroundStatementsCheck.cpp:169
@@ +168,3 @@
+    SourceLocation StartLoc =
+        backwardSkipWhitespaceAndComments(WS->getBody()->getLocStart(),
+                                          *Result.SourceManager,
----------------
Sorry for missing this previously: here and in the next branch you could find the right parenthesis by skipping forward starting from Lexer::getLocForEndOfToken(WS->getCond()->getLocEnd(), 0, ...). This would probably be more efficient and use only one skip function.

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Comment at: test/clang-tidy/misc-braces-around-statements.cpp:179
@@ +178,3 @@
+  // CHECK-MESSAGES: :[[@LINE-5]]:38: warning: statement should be inside braces
+  // CHECK-FIXES: if (1) { while (2) { if (3) { for (;;) { do { ; } while(false) /**/;
+  // CHECK-FIXES-NEXT: }
----------------
What happens with the comment that was after the semicolon? Could you please add it to the appropriate check line?

http://reviews.llvm.org/D5395