Adding an AST matcher for namespaceAliasDecl.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@246322 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/docs/LibASTMatchersReference.html b/docs/LibASTMatchersReference.html
index bf186145d6d9d721414b2e5dcd354914f54aa835..8be0aa9eb8218d5cc4de47e0a75b2dbf8d3015d1 100644 (file)
--- a/docs/LibASTMatchersReference.html
+++ b/docs/LibASTMatchersReference.html
@@ -285,6 +285,17 @@ Example matches X, S, the anonymous union type, i, and U;
 </pre></td></tr>\r
 \r
 \r
+<tr><td>Matcher&lt<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>&gt;</td><td class="name" onclick="toggle('namespaceAliasDecl0')"><a name="namespaceAliasDecl0Anchor">namespaceAliasDecl</a></td><td>Matcher&lt<a href="http://clang.llvm.org/doxygen/classclang_1_1NamespaceAliasDecl.html">NamespaceAliasDecl</a>&gt;...</td></tr>\r
+<tr><td colspan="4" class="doc" id="namespaceAliasDecl0"><pre>Matches a declaration of a namespace alias.\r
+\r
+Given\r
+  namespace test {}\r
+  namespace alias = ::test;\r
+namespaceAliasDecl()\r
+  matches "namespace alias" but not "namespace test"\r
+</pre></td></tr>\r
+\r
+\r
 <tr><td>Matcher&lt<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>&gt;</td><td class="name" onclick="toggle('namespaceDecl0')"><a name="namespaceDecl0Anchor">namespaceDecl</a></td><td>Matcher&lt<a href="http://clang.llvm.org/doxygen/classclang_1_1NamespaceDecl.html">NamespaceDecl</a>&gt;...</td></tr>\r
 <tr><td colspan="4" class="doc" id="namespaceDecl0"><pre>Matches a declaration of a namespace.\r
 \r

diff --git a/include/clang/ASTMatchers/ASTMatchers.h b/include/clang/ASTMatchers/ASTMatchers.h
index 46f30f06d5a93159c3bd43d2ad3ec3f66b247092..cb10daf89e35e33c48cf99289cff9320a0943424 100644 (file)
--- a/include/clang/ASTMatchers/ASTMatchers.h
+++ b/include/clang/ASTMatchers/ASTMatchers.h
@@ -292,6 +292,18 @@ const internal::VariadicDynCastAllOfMatcher<Decl, NamedDecl> namedDecl;
 ///   matches "namespace {}" and "namespace test {}"
 const internal::VariadicDynCastAllOfMatcher<Decl, NamespaceDecl> namespaceDecl;
 
+/// \brief Matches a declaration of a namespace alias.
+///
+/// Given
+/// \code
+///   namespace test {}
+///   namespace alias = ::test;
+/// \endcode
+/// namespaceAliasDecl()
+///   matches "namespace alias" but not "namespace test"
+const internal::VariadicDynCastAllOfMatcher<Decl, NamespaceAliasDecl>
+    namespaceAliasDecl;
+
 /// \brief Matches C++ class declarations.
 ///
 /// Example matches \c X, \c Z

diff --git a/lib/ASTMatchers/Dynamic/Registry.cpp b/lib/ASTMatchers/Dynamic/Registry.cpp
index 1544b08434451ad359b77f4f8460c97c5e5289b7..8601a3804d1954cf9c0aad829ec88d16d42afd74 100644 (file)
--- a/lib/ASTMatchers/Dynamic/Registry.cpp
+++ b/lib/ASTMatchers/Dynamic/Registry.cpp
@@ -288,6 +288,7 @@ RegistryMaps::RegistryMaps() {
   REGISTER_MATCHER(memberPointerType);
   REGISTER_MATCHER(methodDecl);
   REGISTER_MATCHER(namedDecl);
+  REGISTER_MATCHER(namespaceAliasDecl);
   REGISTER_MATCHER(namespaceDecl);
   REGISTER_MATCHER(namesType);
   REGISTER_MATCHER(nestedNameSpecifier);

diff --git a/unittests/ASTMatchers/ASTMatchersTest.cpp b/unittests/ASTMatchers/ASTMatchersTest.cpp
index 5bc66f6c0306c8e0aa5972f7aefb277dcd594742..b4fc09084b8af1ec2e64605088f2e3fb049dd1a8 100644 (file)
--- a/unittests/ASTMatchers/ASTMatchersTest.cpp
+++ b/unittests/ASTMatchers/ASTMatchersTest.cpp
@@ -4369,6 +4369,11 @@ TEST(NS, Anonymous) {
   EXPECT_TRUE(matches("namespace {}", namespaceDecl(isAnonymous())));
 }
 
+TEST(NS, Alias) {
+  EXPECT_TRUE(matches("namespace test {} namespace alias = ::test;",
+                      namespaceAliasDecl(hasName("alias"))));
+}
+
 TEST(NNS, MatchesTypes) {
   NestedNameSpecifierMatcher Matcher = nestedNameSpecifier(
     specifiesType(hasDeclaration(recordDecl(hasName("A")))));