Use switch instead of series of comparisons

[sepavloff]

Summary

This is style correction, no functional changes.

[rjmccall]

LGTM

clang/include/clang/Basic/TokenKinds.h

 inline bool isLiteral(TokenKind K) {
   return K == tok::numeric_constant || K == tok::char_constant ||
          K == tok::wide_char_constant || K == tok::utf8_char_constant ||
          K == tok::utf16_char_constant || K == tok::utf32_char_constant ||
          isStringLiteral(K) || K == tok::header_name;
 }
 
 /// Return true if this is any of tok::annot_* kinds.
-inline bool isAnnotation(TokenKind K) {
-#define ANNOTATION(NAME) \
-  if (K == tok::annot_##NAME) \
-    return true;
-#include "clang/Basic/TokenKinds.def"
-  return false;
-}
+bool isAnnotation(TokenKind K);
 
 /// Return true if this is an annotation token representing a pragma.
 bool isPragmaAnnotation(TokenKind K);
 
 }  // end namespace tok
 }  // end namespace clang
 
 #endif

clang/lib/Basic/TokenKinds.cpp

const char *tok::getKeywordSpelling(TokenKind Kind) {
   switch (Kind) {
 #define KEYWORD(X,Y) case kw_ ## X: return #X;
 #include "clang/Basic/TokenKinds.def"
     default: break;
   }
   return nullptr;
 }
 
+bool tok::isAnnotation(TokenKind Kind) {
+  switch (Kind) {
+#define ANNOTATION(X) case annot_ ## X: return true;
+#include "clang/Basic/TokenKinds.def"
+  default:
+    break;
+  }
+  return false;
+}
+
 bool tok::isPragmaAnnotation(TokenKind Kind) {
   switch (Kind) {
 #define PRAGMA_ANNOTATION(X) case annot_ ## X: return true;
 #include "clang/Basic/TokenKinds.def"
   default:
     break;
   }
   return false;
 }