Adding an AST node matcher for NonTypeTemplateParmDecl objects.

llvm-svn: 249341

3 files changed, 30 insertions, 1 deletions

diff --git a/clang/docs/LibASTMatchersReference.html b/clang/docs/LibASTMatchersReference.html
index cab709e3a64..0d6d18d60e9 100644
--- a/clang/docs/LibASTMatchersReference.html
+++ b/clang/docs/LibASTMatchersReference.html
@@ -316,6 +316,16 @@ namespaceDecl()
 </pre></td></tr>

 

 

+<tr><td>Matcher&lt<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>&gt;</td><td class="name" onclick="toggle('nonTypeTemplateParmDecl0')"><a name="nonTypeTemplateParmDecl0Anchor">nonTypeTemplateParmDecl</a></td><td>Matcher&lt<a href="http://clang.llvm.org/doxygen/classclang_1_1NonTypeTemplateParmDecl.html">NonTypeTemplateParmDecl</a>&gt;...</td></tr>

+<tr><td colspan="4" class="doc" id="nonTypeTemplateParmDecl0"><pre>Matches non-type template parameter declarations.

+

+Given

+  template &lt;typename T, int N&gt; struct C {};

+templateArgument()

+  matches 'N', but not 'T'.

+</pre></td></tr>

+

+

 <tr><td>Matcher&lt<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>&gt;</td><td class="name" onclick="toggle('objcInterfaceDecl0')"><a name="objcInterfaceDecl0Anchor">objcInterfaceDecl</a></td><td>Matcher&lt<a href="http://clang.llvm.org/doxygen/classclang_1_1ObjCInterfaceDecl.html">ObjCInterfaceDecl</a>&gt;...</td></tr>

 <tr><td colspan="4" class="doc" id="objcInterfaceDecl0"><pre>Matches Objective-C interface declarations.

 

@@ -2213,7 +2223,7 @@ Usable as: Matcher&lt<a href="http://clang.llvm.org/doxygen/classclang_1_1Functi
 <tr><td>Matcher&lt<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>&gt;</td><td class="name" onclick="toggle('isVariadic0')"><a name="isVariadic0Anchor">isVariadic</a></td><td></td></tr>

 <tr><td colspan="4" class="doc" id="isVariadic0"><pre>Matches if a function declaration is variadic.

 

-Example matches f, but not g or h. The function i will not match, event when

+Example matches f, but not g or h. The function i will not match, even when

 compiled in C mode.

   void f(...);

   void g(int);

diff --git a/clang/include/clang/ASTMatchers/ASTMatchers.h b/clang/include/clang/ASTMatchers/ASTMatchers.h
index cfed1fd16de..8b97df6ce63 100644
--- a/clang/include/clang/ASTMatchers/ASTMatchers.h
+++ b/clang/include/clang/ASTMatchers/ASTMatchers.h
@@ -412,6 +412,18 @@ const internal::VariadicAllOfMatcher<CXXCtorInitializer> cxxCtorInitializer;
 ///   matches 'int' in C<int>.
 const internal::VariadicAllOfMatcher<TemplateArgument> templateArgument;
 
+/// \brief Matches non-type template parameter declarations.
+///
+/// Given
+/// \code
+///   template <typename T, int N> struct C {};
+/// \endcode
+/// templateArgument()
+///   matches 'N', but not 'T'.
+const internal::VariadicDynCastAllOfMatcher<
+  Decl,
+  NonTypeTemplateParmDecl> nonTypeTemplateParmDecl;
+
 /// \brief Matches public C++ declarations.
 ///
 /// Given
diff --git a/clang/unittests/ASTMatchers/ASTMatchersTest.cpp b/clang/unittests/ASTMatchers/ASTMatchersTest.cpp
index a15d6ac2be5..4954402e83b 100644
--- a/clang/unittests/ASTMatchers/ASTMatchersTest.cpp
+++ b/clang/unittests/ASTMatchers/ASTMatchersTest.cpp
@@ -1172,6 +1172,13 @@ TEST(Matcher, SubstNonTypeTemplateParm) {
                       substNonTypeTemplateParmExpr()));
 }
 
+TEST(Matcher, NonTypeTemplateParmDecl) {
+  EXPECT_TRUE(matches("template <int N> void f();",
+                      nonTypeTemplateParmDecl(hasName("N"))));
+  EXPECT_TRUE(
+      notMatches("template <typename T> void f();", nonTypeTemplateParmDecl()));
+}
+
 TEST(Matcher, UserDefinedLiteral) {
   EXPECT_TRUE(matches("constexpr char operator \"\" _inc (const char i) {"
                       "  return i + 1;"