[PATCH] Add voidType() matcher.

[Samuel Benzaquen]

REPOSITORY
  rL LLVM

http://reviews.llvm.org/D6656

Files:
  cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h
  cfe/trunk/lib/ASTMatchers/Dynamic/Registry.cpp
  cfe/trunk/unittests/ASTMatchers/ASTMatchersTest.cpp

Index: cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h
===================================================================
--- cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h
+++ cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h
@@ -3211,6 +3211,18 @@
       new internal::TypeLocTypeMatcher(InnerMatcher));
 }
 
+/// \brief Matches type \c void.
+///
+/// Given
+/// \code
+///  struct S { void func(); };
+/// \endcode
+/// functionDecl(returns(voidType()))
+///   matches "void func();"
+AST_MATCHER(Type, voidType) {
+  return Node.isVoidType();
+}
+
 /// \brief Matches builtin Types.
 ///
 /// Given
Index: cfe/trunk/unittests/ASTMatchers/ASTMatchersTest.cpp
===================================================================
--- cfe/trunk/unittests/ASTMatchers/ASTMatchersTest.cpp
+++ cfe/trunk/unittests/ASTMatchers/ASTMatchersTest.cpp
@@ -3857,6 +3857,11 @@
   EXPECT_TRUE(matches("struct S {};", qualType().bind("loc")));
 }
 
+TEST(TypeMatching, MatchesVoid) {
+  EXPECT_TRUE(
+      matches("struct S { void func(); };", methodDecl(returns(voidType()))));
+}
+
 TEST(TypeMatching, MatchesArrayTypes) {
   EXPECT_TRUE(matches("int a[] = {2,3};", arrayType()));
   EXPECT_TRUE(matches("int a[42];", arrayType()));
Index: cfe/trunk/lib/ASTMatchers/Dynamic/Registry.cpp
===================================================================
--- cfe/trunk/lib/ASTMatchers/Dynamic/Registry.cpp
+++ cfe/trunk/lib/ASTMatchers/Dynamic/Registry.cpp
@@ -332,6 +332,7 @@
   REGISTER_MATCHER(valueDecl);
   REGISTER_MATCHER(varDecl);
   REGISTER_MATCHER(variableArrayType);
+  REGISTER_MATCHER(voidType);
   REGISTER_MATCHER(whileStmt);
   REGISTER_MATCHER(withInitializer);
 }

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