clang-tidy: add IgnoreMacros option to modernize-use-default-member-init

Summary:
And also enable it by default to be consistent with e.g.
modernize-use-using.

This helps e.g. when running this check on cppunit client code where the
macro is provided by the system, so there is no easy way to modify it.

Reviewers: alexfh, malcolm.parsons

Reviewed By: malcolm.parsons

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D32945

llvm-svn: 302429

1 files changed, 7 insertions, 1 deletions

diff --git a/clang-tools-extra/clang-tidy/modernize/UseDefaultMemberInitCheck.cpp b/clang-tools-extra/clang-tidy/modernize/UseDefaultMemberInitCheck.cpp
index d0d4c657e57..7fa773cc362 100644
--- a/clang-tools-extra/clang-tidy/modernize/UseDefaultMemberInitCheck.cpp
+++ b/clang-tools-extra/clang-tidy/modernize/UseDefaultMemberInitCheck.cpp
@@ -139,11 +139,13 @@ static bool sameValue(const Expr *E1, const Expr *E2) {
 UseDefaultMemberInitCheck::UseDefaultMemberInitCheck(StringRef Name,
                                                      ClangTidyContext *Context)
     : ClangTidyCheck(Name, Context),
-      UseAssignment(Options.get("UseAssignment", 0) != 0) {}
+      UseAssignment(Options.get("UseAssignment", 0) != 0),
+      IgnoreMacros(Options.getLocalOrGlobal("IgnoreMacros", 1) != 0) {}
 
 void UseDefaultMemberInitCheck::storeOptions(
     ClangTidyOptions::OptionMap &Opts) {
   Options.store(Opts, "UseAssignment", UseAssignment);
+  Options.store(Opts, "IgnoreMacros", IgnoreMacros);
 }
 
 void UseDefaultMemberInitCheck::registerMatchers(MatchFinder *Finder) {
@@ -197,6 +199,10 @@ void UseDefaultMemberInitCheck::checkDefaultInit(
     const MatchFinder::MatchResult &Result, const CXXCtorInitializer *Init) {
   const FieldDecl *Field = Init->getMember();
 
+  SourceLocation StartLoc = Field->getLocStart();
+  if (StartLoc.isMacroID() && IgnoreMacros)
+    return;
+
   SourceLocation FieldEnd =
       Lexer::getLocForEndOfToken(Field->getSourceRange().getEnd(), 0,
                                  *Result.SourceManager, getLangOpts());