Add a nullPointerConstant() AST matcher to handle variations of null pointer constants in one matcher.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@261008 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 17 insertions, 0 deletions

diff --git a/docs/LibASTMatchersReference.html b/docs/LibASTMatchersReference.html
index 93408e5776..fc4870433c 100644
--- a/docs/LibASTMatchersReference.html
+++ b/docs/LibASTMatchersReference.html
@@ -2176,6 +2176,23 @@ fieldDecl(isPublic())
 </pre></td></tr>
 
 
+<tr><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>&gt;</td><td class="name" onclick="toggle('nullPointerConstant0')"><a name="nullPointerConstant0Anchor">nullPointerConstant</a></td><td></td></tr>
+<tr><td colspan="4" class="doc" id="nullPointerConstant0"><pre>Matches expressions that resolve to a null pointer constant, such as
+GNU's __null, C++11's nullptr, or C's NULL macro.
+
+Given:
+  void *v1 = NULL;
+  void *v2 = nullptr;
+  void *v3 = __null; GNU extension
+  char *cp = (char *)0;
+  int *ip = 0;
+  int i = 0;
+expr(nullPointerConstant())
+  matches the initializer for v1, v2, v3, cp, and ip. Does not match the
+  initializer for i.
+</pre></td></tr>
+
+
 <tr><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1FloatingLiteral.html">FloatingLiteral</a>&gt;</td><td class="name" onclick="toggle('equals1')"><a name="equals1Anchor">equals</a></td><td>ValueT  Value</td></tr>
 <tr><td colspan="4" class="doc" id="equals1"><pre>Matches literals that are equal to the given value.