r274015 - [ASTMatchers] Add isLambda() matcher.

[Samuel Benzaquen via cfe-commits]

Author: sbenza
Date: Tue Jun 28 09:08:56 2016
New Revision: 274015

URL: http://llvm.org/viewvc/llvm-project?rev=274015&view=rev
Log:
[ASTMatchers] Add isLambda() matcher.

Modified:
    cfe/trunk/docs/LibASTMatchersReference.html
    cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h
    cfe/trunk/lib/ASTMatchers/Dynamic/Registry.cpp
    cfe/trunk/unittests/ASTMatchers/ASTMatchersNarrowingTest.cpp

Modified: cfe/trunk/docs/LibASTMatchersReference.html
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/LibASTMatchersReference.html?rev=274015&r1=274014&r2=274015&view=diff
==============================================================================
--- cfe/trunk/docs/LibASTMatchersReference.html (original)
+++ cfe/trunk/docs/LibASTMatchersReference.html Tue Jun 28 09:08:56 2016
@@ -2137,6 +2137,17 @@ matches A and C::f, but not B, C, or B::
 </pre></td></tr>
 
 
+<tr><td>Matcher&lt;<a 
href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html";>CXXRecordDecl</a>&gt;</td><td
 class="name" onclick="toggle('isLambda0')"><a 
name="isLambda0Anchor">isLambda</a></td><td></td></tr>
+<tr><td colspan="4" class="doc" id="isLambda0"><pre>Matches the generated 
class of lambda expressions.
+
+Given:
+  auto x = []{};
+
+cxxRecordDecl(isLambda()) matches the implicit class declaration of
+decltype(x)
+</pre></td></tr>
+
+
 <tr><td>Matcher&lt;<a 
href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html";>CXXRecordDecl</a>&gt;</td><td
 class="name" onclick="toggle('isSameOrDerivedFrom1')"><a 
name="isSameOrDerivedFrom1Anchor">isSameOrDerivedFrom</a></td><td>std::string 
BaseName</td></tr>
 <tr><td colspan="4" class="doc" id="isSameOrDerivedFrom1"><pre>Overloaded 
method as shortcut for
 isSameOrDerivedFrom(hasName(...)).

Modified: cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h?rev=274015&r1=274014&r2=274015&view=diff
==============================================================================
--- cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h (original)
+++ cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h Tue Jun 28 09:08:56 2016
@@ -2197,6 +2197,19 @@ AST_MATCHER_P(CXXRecordDecl, hasMethod,
                                     Node.method_end(), Finder, Builder);
 }
 
+/// \brief Matches the generated class of lambda expressions.
+///
+/// Given:
+/// \code
+///   auto x = []{};
+/// \endcode
+///
+/// \c cxxRecordDecl(isLambda()) matches the implicit class declaration of
+/// \c decltype(x)
+AST_MATCHER(CXXRecordDecl, isLambda) {
+  return Node.isLambda();
+}
+
 /// \brief Matches AST nodes that have child AST nodes that match the
 /// provided matcher.
 ///

Modified: cfe/trunk/lib/ASTMatchers/Dynamic/Registry.cpp
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/ASTMatchers/Dynamic/Registry.cpp?rev=274015&r1=274014&r2=274015&view=diff
==============================================================================
--- cfe/trunk/lib/ASTMatchers/Dynamic/Registry.cpp (original)
+++ cfe/trunk/lib/ASTMatchers/Dynamic/Registry.cpp Tue Jun 28 09:08:56 2016
@@ -307,6 +307,7 @@ RegistryMaps::RegistryMaps() {
   REGISTER_MATCHER(isInteger);
   REGISTER_MATCHER(isIntegral);
   REGISTER_MATCHER(isInTemplateInstantiation);
+  REGISTER_MATCHER(isLambda);
   REGISTER_MATCHER(isListInitialization);
   REGISTER_MATCHER(isMemberInitializer);
   REGISTER_MATCHER(isMoveAssignmentOperator);

Modified: cfe/trunk/unittests/ASTMatchers/ASTMatchersNarrowingTest.cpp
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/unittests/ASTMatchers/ASTMatchersNarrowingTest.cpp?rev=274015&r1=274014&r2=274015&view=diff
==============================================================================
--- cfe/trunk/unittests/ASTMatchers/ASTMatchersNarrowingTest.cpp (original)
+++ cfe/trunk/unittests/ASTMatchers/ASTMatchersNarrowingTest.cpp Tue Jun 28 
09:08:56 2016
@@ -537,6 +537,12 @@ TEST(DeclarationMatcher, ClassIsDerived)
     cxxRecordDecl(isDerivedFrom(namedDecl(hasName("X"))))));
 }
 
+TEST(DeclarationMatcher, IsLambda) {
+  const auto IsLambda = cxxMethodDecl(ofClass(cxxRecordDecl(isLambda())));
+  EXPECT_TRUE(matches("auto x = []{};", IsLambda));
+  EXPECT_TRUE(notMatches("struct S { void operator()() const; };", IsLambda));
+}
+
 TEST(Matcher, BindMatchedNodes) {
   DeclarationMatcher ClassX = has(recordDecl(hasName("::X")).bind("x"));
 


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