From: Aaron Ballman <aaron@aaronballman.com>
Date: Fri, 22 Jan 2016 22:37:09 +0000 (+0000)
Subject: Add am AST matcher for isMoveAssignmentOperator.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a5cde4ff1b06154a48f6d6d77b7b5cbc4bf9987b;p=clang

Add am AST matcher for isMoveAssignmentOperator.

Patch by Jonathan Coe.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@258573 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/docs/LibASTMatchersReference.html b/docs/LibASTMatchersReference.html
index 91c7101cdb..40a64f79f8 100644
--- a/docs/LibASTMatchersReference.html
+++ b/docs/LibASTMatchersReference.html
@@ -1815,6 +1815,21 @@ matches A and C::f, but not B, C, or B::f
 </pre></td></tr>
 
 
+<tr><td>Matcher&lt<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXMethodDecl.html">CXXMethodDecl</a>&gt;</td><td class="name" onclick="toggle('isMoveAssignmentOperator0')"><a name="isMoveAssignmentOperator0Anchor">isMoveAssignmentOperator</a></td><td></td></tr>
+<tr><td colspan="4" class="doc" id="isMoveAssignmentOperator0"><pre>Matches if the given method declaration declares a move assignment
+operator.
+
+Given
+struct A {
+  A &amp;operator=(const A &amp;);
+  A &amp;operator=(A &amp;&amp;);
+};
+
+cxxMethodDecl(isMoveAssignmentOperator()) matches the second method but not
+the first one.
+</pre></td></tr>
+
+
 <tr><td>Matcher&lt<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXMethodDecl.html">CXXMethodDecl</a>&gt;</td><td class="name" onclick="toggle('isOverride0')"><a name="isOverride0Anchor">isOverride</a></td><td></td></tr>
 <tr><td colspan="4" class="doc" id="isOverride0"><pre>Matches if the given method declaration overrides another method.
 
diff --git a/include/clang/ASTMatchers/ASTMatchers.h b/include/clang/ASTMatchers/ASTMatchers.h
index 1896af7059..fda07de757 100644
--- a/include/clang/ASTMatchers/ASTMatchers.h
+++ b/include/clang/ASTMatchers/ASTMatchers.h
@@ -3576,6 +3576,21 @@ AST_MATCHER(CXXMethodDecl, isCopyAssignmentOperator) {
   return Node.isCopyAssignmentOperator();
 }
 
+/// \brief Matches if the given method declaration declares a move assignment
+/// operator.
+///
+/// Given
+/// \code
+///   struct S {
+///     S(const S &); // #1
+///     S& operator=(S &&); // #2
+///   };
+/// \endcode
+/// cxxMethodDecl(isMoveAssignmentOperator()) will match #2, but not #1.
+AST_MATCHER(CXXMethodDecl, isMoveAssignmentOperator) {
+  return Node.isMoveAssignmentOperator();
+}
+
 /// \brief Matches if the given method declaration overrides another method.
 ///
 /// Given
diff --git a/lib/ASTMatchers/Dynamic/Registry.cpp b/lib/ASTMatchers/Dynamic/Registry.cpp
index 51cbac6c6a..6aee48416d 100644
--- a/lib/ASTMatchers/Dynamic/Registry.cpp
+++ b/lib/ASTMatchers/Dynamic/Registry.cpp
@@ -291,6 +291,7 @@ RegistryMaps::RegistryMaps() {
   REGISTER_MATCHER(isInTemplateInstantiation);
   REGISTER_MATCHER(isListInitialization);
   REGISTER_MATCHER(isMemberInitializer);
+  REGISTER_MATCHER(isMoveAssignmentOperator);
   REGISTER_MATCHER(isMoveConstructor);
   REGISTER_MATCHER(isNoThrow);
   REGISTER_MATCHER(isOverride);
diff --git a/unittests/ASTMatchers/ASTMatchersTest.cpp b/unittests/ASTMatchers/ASTMatchersTest.cpp
index ab1997ab0f..67d3de9f81 100644
--- a/unittests/ASTMatchers/ASTMatchersTest.cpp
+++ b/unittests/ASTMatchers/ASTMatchersTest.cpp
@@ -2059,6 +2059,21 @@ TEST(Matcher, MatchesCopyAssignmentOperator) {
                       cxxMethodDecl(isCopyAssignmentOperator())));
 }
 
+TEST(Matcher, MatchesMoveAssignmentOperator) {
+  EXPECT_TRUE(notMatches("class X { X &operator=(X); };",
+                         cxxMethodDecl(isMoveAssignmentOperator())));
+  EXPECT_TRUE(matches("class X { X &operator=(X &&); };",
+                      cxxMethodDecl(isMoveAssignmentOperator())));
+  EXPECT_TRUE(matches("class X { X &operator=(const X &&); };",
+                      cxxMethodDecl(isMoveAssignmentOperator())));
+  EXPECT_TRUE(matches("class X { X &operator=(volatile X &&); };",
+                      cxxMethodDecl(isMoveAssignmentOperator())));
+  EXPECT_TRUE(matches("class X { X &operator=(const volatile X &&); };",
+                      cxxMethodDecl(isMoveAssignmentOperator())));
+  EXPECT_TRUE(notMatches("class X { X &operator=(X &); };",
+                         cxxMethodDecl(isMoveAssignmentOperator())));
+}
+
 TEST(Matcher, MatchesConstMethod) {
   EXPECT_TRUE(
       matches("struct A { void foo() const; };", cxxMethodDecl(isConst())));