From: Aaron Ballman <aaron@aaronballman.com>
Date: Mon, 5 Oct 2015 19:44:42 +0000 (+0000)
Subject: Adding an AST node matcher for NonTypeTemplateParmDecl objects.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=9fc9d8db3d9c2601a1f9f3df9263e9094d22a0e8;p=clang

Adding an AST node matcher for NonTypeTemplateParmDecl objects.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@249341 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/docs/LibASTMatchersReference.html b/docs/LibASTMatchersReference.html
index cab709e3a6..0d6d18d60e 100644
--- a/docs/LibASTMatchersReference.html
+++ b/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/include/clang/ASTMatchers/ASTMatchers.h b/include/clang/ASTMatchers/ASTMatchers.h
index cfed1fd16d..8b97df6ce6 100644
--- a/include/clang/ASTMatchers/ASTMatchers.h
+++ b/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/unittests/ASTMatchers/ASTMatchersTest.cpp b/unittests/ASTMatchers/ASTMatchersTest.cpp
index a15d6ac2be..4954402e83 100644
--- a/unittests/ASTMatchers/ASTMatchersTest.cpp
+++ b/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;"