Merge pull request andreasfertig#21 from andreasfertig/fixedIssue20

Fixed andreasfertig#20: DecompositionDecl with CXXOperatorCallExpr

Author: andreasfertig

ClassOperatorHandler.cpp

@@ -45,6 +45,7 @@ ClassOperatorHandler::ClassOperatorHandler(Rewriter& rewrite, MatchFinder& match
                                        hasLambdaAncestor,
                                        hasAncestor(implicitCastExpr(hasMatchingCast())),
                                        hasAncestor(userDefinedLiteral()),
+                                       hasAncestor(decompositionDecl()),
                                        hasAncestor(cxxForRangeStmt())
 #ifdef MATCH_CXX_MEM_CEXPR
                                            ,

tests/Issue20.cerr

@@ -0,0 +1,7 @@
+.tmp.cpp:7:63: error: rvalue reference to type 'std::tuple_element<0, std::pair<const int, int> >::type' (aka 'const int') cannot bind to lvalue of type 'typename tuple_element<0UL, pair<const int, int> >::type' (aka 'const int')
+    std::tuple_element<0, std::pair<const int, int> >::type&& key = std::get<0ul>(__operator6);
+                                                              ^     ~~~~~~~~~~~~~~~~~~~~~~~~~~
+.tmp.cpp:8:63: error: rvalue reference to type 'std::tuple_element<1, std::pair<const int, int> >::type' (aka 'int') cannot bind to lvalue of type 'typename tuple_element<1UL, pair<const int, int> >::type' (aka 'int')
+    std::tuple_element<1, std::pair<const int, int> >::type&& value = std::get<1ul>(__operator6);
+                                                              ^       ~~~~~~~~~~~~~~~~~~~~~~~~~~
+2 errors generated.

tests/Issue20.cpp

@@ -0,0 +1,7 @@
+#include <map>
+
+int main()
+{
+    std::map<int, int> map{{1, 2}};
+    auto [key, value] = *map.begin();
+}

tests/Issue20.expect

@@ -0,0 +1,10 @@
+#include <map>
+
+int main()
+{
+    std::map<int, int> map{ std::initializer_list<std::pair<const int, int> >{ std::pair<const int, int>(1, 2) } };
+    std::pair<const int, int> __operator6 = std::pair<const int, int>(map.begin().operator*());
+    std::tuple_element<0, std::pair<const int, int> >::type&& key = std::get<0ul>(__operator6);
+    std::tuple_element<1, std::pair<const int, int> >::type&& value = std::get<1ul>(__operator6);
+    
+}