[libTooling] Introduce the MatchConsumer abstraction

Summary:
This revision introduces a separate (small) library for the `MatchConsumer`
abstraction: computations over AST match results.  This abstraction is central
to the Transformer framework, and there deserves being defined explicitly.

Reviewers: gribozavr

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D67961

llvm-svn: 372870

1 files changed, 0 insertions, 8 deletions

diff --git a/clang/lib/Tooling/Refactoring/RangeSelector.cpp b/clang/lib/Tooling/Refactoring/RangeSelector.cpp
index ae55698189c..972c7e65540 100644
--- a/clang/lib/Tooling/Refactoring/RangeSelector.cpp
+++ b/clang/lib/Tooling/Refactoring/RangeSelector.cpp
@@ -310,11 +310,3 @@ RangeSelector tooling::expansion(RangeSelector S) {
     return Result.SourceManager->getExpansionRange(*SRange);
   };
 }
-
-RangeSelector tooling::ifBound(std::string ID, RangeSelector TrueSelector,
-                               RangeSelector FalseSelector) {
-  return [=](const MatchResult &Result) {
-    auto &Map = Result.Nodes.getMap();
-    return (Map.find(ID) != Map.end() ? TrueSelector : FalseSelector)(Result);
-  };
-}