ruiu added inline comments.
================
Comment at: clang/include/clang/Basic/DiagnosticIDs.h:266
+ static std::vector<std::string> getDiagnosticFlags();
+
----------------
Please write a function comment just like other member functions in this class.
================
Comment at: clang/lib/Basic/DiagnosticIDs.cpp:514
+std::vector<std::string> DiagnosticIDs::getDiagnosticFlags() {
+ std::vector<std::string> res;
+ for (int i = 1; DiagGroupNames[i] != '\0';) {
----------------
res -> Res
i -> I
================
Comment at: clang/lib/Basic/DiagnosticIDs.cpp:515
+ std::vector<std::string> res;
+ for (int i = 1; DiagGroupNames[i] != '\0';) {
+ std::string Diag =
----------------
`size_t` is more precise than `int`, even though sizeof(DiagGroupNames) in
reality fits in an int.
================
Comment at: clang/lib/Basic/DiagnosticIDs.cpp:516-517
+ for (int i = 1; DiagGroupNames[i] != '\0';) {
+ std::string Diag =
+ std::string(StringRef(DiagGroupNames + i + 1, DiagGroupNames[i]));
+ i += DiagGroupNames[i] + 1;
----------------
If you want to construct a string, you can do this
std::string Diag(DiagGroupNames + i + 1, DiagGroupNames[i]);
================
Comment at: clang/lib/Basic/DiagnosticIDs.cpp:519-522
+ std::string W = "-W" + Diag;
+ std::string Wno = "-Wno" + Diag;
+ res.push_back(W);
+ res.push_back(Wno);
----------------
I think you can remove these temporary variables:
res.push_back("-W" + Diag);
res.push_back("-Wno" + Diag);
================
Comment at: clang/lib/Driver/Driver.cpp:1279
+
+ for (std::string S : DiagnosticIDs::getDiagnosticFlags())
+ if (StringRef(S).startswith(PassedFlags))
----------------
Let's avoid copy: std::string -> StringRef
https://reviews.llvm.org/D35447
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