[PATCH] D32810: Add cxxStdInitializerListExpr AST matcher

[Jakub Kuderski via Phabricator via cfe-commits]

kuhar created this revision.
Herald added a subscriber: klimek.

This adds a new ASTMatcher for CXXStdInitializerListExprs that matches C++ initializer list expressions.

The primary motivation is to use it to fix PR32896 <https://bugs.llvm.org/show_bug.cgi?id=32896> (review here D32767 <https://reviews.llvm.org/D32767>).


Repository:
  rL LLVM

https://reviews.llvm.org/D32810

Files:
  include/clang/ASTMatchers/ASTMatchers.h
  lib/ASTMatchers/Dynamic/Registry.cpp


Index: lib/ASTMatchers/Dynamic/Registry.cpp
===================================================================
--- lib/ASTMatchers/Dynamic/Registry.cpp
+++ lib/ASTMatchers/Dynamic/Registry.cpp
@@ -153,6 +153,7 @@
   REGISTER_MATCHER(cxxRecordDecl);
   REGISTER_MATCHER(cxxReinterpretCastExpr);
   REGISTER_MATCHER(cxxStaticCastExpr);
+  REGISTER_MATCHER(cxxStdInitializerListExpr);
   REGISTER_MATCHER(cxxTemporaryObjectExpr);
   REGISTER_MATCHER(cxxThisExpr);
   REGISTER_MATCHER(cxxThrowExpr);
Index: include/clang/ASTMatchers/ASTMatchers.h
===================================================================
--- include/clang/ASTMatchers/ASTMatchers.h
+++ include/clang/ASTMatchers/ASTMatchers.h
@@ -1223,6 +1223,20 @@
           InnerMatcher.matches(*SyntForm, Finder, Builder));
 }
 
+/// \brief Matches C++ initializer list expressions.
+///
+/// Given
+/// \code
+///   std::vector<int> a({ 1, 2, 3 });
+///   std::vector<int> b = { 4, 5 };
+///   int c[] = { 6, 7 };
+///   std::pair<int, int> d = { 8, 9 }; 
+/// \endcode
+/// cxxStdInitializerListExpr()
+///   matches "{ 1, 2, 3 }" and "{ 4, 5 }"
+const internal::VariadicDynCastAllOfMatcher<Stmt,
+  CXXStdInitializerListExpr> cxxStdInitializerListExpr;
+
 /// \brief Matches implicit initializers of init list expressions.
 ///
 /// Given


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