[ASTMatchers] Add booleanType() matcher.

llvm-svn: 256278

clang/include/clang/ASTMatchers/ASTMatchers.h

@@ -3762,6 +3762,18 @@ AST_MATCHER_FUNCTION_P_OVERLOAD(internal::BindableMatcher<TypeLoc>, loc,
       new internal::TypeLocTypeMatcher(InnerMatcher));
 }
 
+/// \brief Matches type \c bool.
+///
+/// Given
+/// \code
+///  struct S { bool func(); };
+/// \endcode
+/// functionDecl(returns(boolType()))
+///   matches "bool func();"
+AST_MATCHER(Type, booleanType) {
+  return Node.isBooleanType();
+}
+
 /// \brief Matches type \c void.
 ///
 /// Given

clang/lib/ASTMatchers/Dynamic/Registry.cpp

@@ -108,6 +108,7 @@ RegistryMaps::RegistryMaps() {
   REGISTER_MATCHER(autoType);
   REGISTER_MATCHER(binaryOperator);
   REGISTER_MATCHER(blockPointerType);
+  REGISTER_MATCHER(booleanType);
   REGISTER_MATCHER(breakStmt);
   REGISTER_MATCHER(builtinType);
   REGISTER_MATCHER(callExpr);

clang/unittests/ASTMatchers/ASTMatchersTest.cpp

@@ -4146,6 +4146,13 @@ TEST(TypeMatching, MatchesTypes) {
   EXPECT_TRUE(matches("struct S {};", qualType().bind("loc")));
 }
 
+TEST(TypeMatching, MatchesBool) {
+  EXPECT_TRUE(matches("struct S { bool func(); };",
+                      cxxMethodDecl(returns(booleanType()))));
+  EXPECT_TRUE(notMatches("struct S { void func(); };",
+                         cxxMethodDecl(returns(booleanType()))));
+}
+
 TEST(TypeMatching, MatchesVoid) {
   EXPECT_TRUE(matches("struct S { void func(); };",
                       cxxMethodDecl(returns(voidType()))));