r269916 - [ASTMatcher] Add a node matcher for UnresolvedLookupExpr.

[Haojian Wu via cfe-commits]

Author: hokein
Date: Wed May 18 07:53:59 2016
New Revision: 269916

URL: http://llvm.org/viewvc/llvm-project?rev=269916&view=rev
Log:
[ASTMatcher] Add a node matcher for UnresolvedLookupExpr.

Reviewers: alexfh, aaron.ballman

Subscribers: aaron.ballman, klimek, cfe-commits

Differential Revision: http://reviews.llvm.org/D20360

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

Modified: cfe/trunk/docs/LibASTMatchersReference.html
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/LibASTMatchersReference.html?rev=269916&r1=269915&r2=269916&view=diff
==============================================================================
--- cfe/trunk/docs/LibASTMatchersReference.html (original)
+++ cfe/trunk/docs/LibASTMatchersReference.html Wed May 18 07:53:59 2016
@@ -1275,6 +1275,21 @@ Example matches !a
 </pre></td></tr>
 
 
+<tr><td>Matcher&lt;<a 
href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html";>Stmt</a>&gt;</td><td
 class="name" onclick="toggle('unresolvedLookupExpr0')"><a 
name="unresolvedLookupExpr0Anchor">unresolvedLookupExpr</a></td><td>Matcher&lt;<a
 
href="http://clang.llvm.org/doxygen/classclang_1_1UnresolvedLookupExpr.html";>UnresolvedLookupExpr</a>&gt;...</td></tr>
+<tr><td colspan="4" class="doc" id="unresolvedLookupExpr0"><pre>Matches 
reference to a name that can be looked up during parsing
+but could not be resolved to a specific declaration.
+
+Given
+  template&lt;typename T&gt;
+  T foo() { T a; return a; }
+  template&lt;typename T&gt;
+  void bar() {
+    foo&lt;T&gt;();
+  }
+unresolvedLookupExpr()
+  matches foo&lt;T&gt;() </pre></td></tr>
+
+
 <tr><td>Matcher&lt;<a 
href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html";>Stmt</a>&gt;</td><td
 class="name" onclick="toggle('userDefinedLiteral0')"><a 
name="userDefinedLiteral0Anchor">userDefinedLiteral</a></td><td>Matcher&lt;<a 
href="http://clang.llvm.org/doxygen/classclang_1_1UserDefinedLiteral.html";>UserDefinedLiteral</a>&gt;...</td></tr>
 <tr><td colspan="4" class="doc" id="userDefinedLiteral0"><pre>Matches user 
defined literal operator call.
 

Modified: cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h?rev=269916&r1=269915&r2=269916&view=diff
==============================================================================
--- cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h (original)
+++ cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h Wed May 18 07:53:59 2016
@@ -1086,6 +1086,24 @@ const internal::VariadicDynCastAllOfMatc
   Decl,
   UsingDirectiveDecl> usingDirectiveDecl;
 
+/// \brief Matches reference to a name that can be looked up during parsing
+/// but could not be resolved to a specific declaration.
+///
+/// Given
+/// \code
+///   template<typename T>
+///   T foo() { T a; return a; }
+///   template<typename T>
+///   void bar() {
+///     foo<T>();
+///   }
+/// \endcode
+/// unresolvedLookupExpr()
+///   matches \code foo<T>() \endcode
+const internal::VariadicDynCastAllOfMatcher<
+   Stmt,
+   UnresolvedLookupExpr> unresolvedLookupExpr;
+
 /// \brief Matches unresolved using value declarations.
 ///
 /// Given

Modified: cfe/trunk/lib/ASTMatchers/Dynamic/Registry.cpp
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/ASTMatchers/Dynamic/Registry.cpp?rev=269916&r1=269915&r2=269916&view=diff
==============================================================================
--- cfe/trunk/lib/ASTMatchers/Dynamic/Registry.cpp (original)
+++ cfe/trunk/lib/ASTMatchers/Dynamic/Registry.cpp Wed May 18 07:53:59 2016
@@ -399,6 +399,7 @@ RegistryMaps::RegistryMaps() {
   REGISTER_MATCHER(unaryOperator);
   REGISTER_MATCHER(unaryTransformType);
   REGISTER_MATCHER(unless);
+  REGISTER_MATCHER(unresolvedLookupExpr);
   REGISTER_MATCHER(unresolvedUsingTypenameDecl);
   REGISTER_MATCHER(unresolvedUsingValueDecl);
   REGISTER_MATCHER(userDefinedLiteral);

Modified: cfe/trunk/unittests/ASTMatchers/ASTMatchersNodeTest.cpp
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/unittests/ASTMatchers/ASTMatchersNodeTest.cpp?rev=269916&r1=269915&r2=269916&view=diff
==============================================================================
--- cfe/trunk/unittests/ASTMatchers/ASTMatchersNodeTest.cpp (original)
+++ cfe/trunk/unittests/ASTMatchers/ASTMatchersNodeTest.cpp Wed May 18 07:53:59 
2016
@@ -177,6 +177,15 @@ TEST(EnumConstant, Matches) {
   EXPECT_TRUE(notMatches("enum X {};", Matcher));
 }
 
+TEST(Matcher, UnresolvedLookupExpr) {
+  EXPECT_TRUE(matches("template<typename T>"
+                      "T foo() { T a; return a; }"
+                      "template<typename T>"
+                      "void bar() {"
+                      "  foo<T>();"
+                      "}",
+                      unresolvedLookupExpr()));
+}
 
 TEST(Matcher, Call) {
   // FIXME: Do we want to overload Call() to directly take


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