[PATCH] D54406: Add matchDynamic convenience functions

[Stephen Kelly via Phabricator via cfe-commits]

steveire created this revision.
steveire added a reviewer: aaron.ballman.
Herald added a subscriber: cfe-commits.

These correspond to the existing match() free functions.


Repository:
  rC Clang

https://reviews.llvm.org/D54406

Files:
  include/clang/ASTMatchers/ASTMatchFinder.h
  unittests/ASTMatchers/ASTMatchersNodeTest.cpp


Index: unittests/ASTMatchers/ASTMatchersNodeTest.cpp
===================================================================
--- unittests/ASTMatchers/ASTMatchersNodeTest.cpp
+++ unittests/ASTMatchers/ASTMatchersNodeTest.cpp
@@ -1719,5 +1719,28 @@
   EXPECT_FALSE(matchesObjC(ObjCStringNoPool, autoreleasePoolStmt()));
 }
 
+TEST(MatchFinderAPI, matchesDynamic) {
+
+  std::string SourceCode = "struct A { void f() {} };";
+  auto Matcher = functionDecl(isDefinition()).bind("method");
+
+  auto astUnit = tooling::buildASTFromCode(SourceCode);
+
+  auto GlobalBoundNodes = matchDynamic(Matcher, astUnit->getASTContext());
+
+  EXPECT_EQ(GlobalBoundNodes.size(), 1u);
+  EXPECT_EQ(GlobalBoundNodes[0].getMap().size(), 1u);
+
+  auto GlobalMethodNode = GlobalBoundNodes[0].getNodeAs<FunctionDecl>("method");
+  EXPECT_TRUE(GlobalMethodNode != nullptr);
+
+  auto MethodBoundNodes = matchDynamic(Matcher, *GlobalMethodNode, astUnit->getASTContext());
+  EXPECT_EQ(MethodBoundNodes.size(), 1u);
+  EXPECT_EQ(MethodBoundNodes[0].getMap().size(), 1u);
+
+  auto MethodNode = MethodBoundNodes[0].getNodeAs<FunctionDecl>("method");
+  EXPECT_EQ(MethodNode, GlobalMethodNode);
+}
+
 } // namespace ast_matchers
 } // namespace clang
Index: include/clang/ASTMatchers/ASTMatchFinder.h
===================================================================
--- include/clang/ASTMatchers/ASTMatchFinder.h
+++ include/clang/ASTMatchers/ASTMatchFinder.h
@@ -310,6 +310,31 @@
   return std::move(Callback.Nodes);
 }
 
+inline SmallVector<BoundNodes, 1>
+matchDynamic(internal::DynTypedMatcher Matcher, const ast_type_traits::DynTypedNode &Node,
+      ASTContext &Context) {
+  internal::CollectMatchesCallback Callback;
+  MatchFinder Finder;
+  Finder.addDynamicMatcher(Matcher, &Callback);
+  Finder.match(Node, Context);
+  return std::move(Callback.Nodes);
+}
+
+template <typename NodeT>
+SmallVector<BoundNodes, 1>
+matchDynamic(internal::DynTypedMatcher Matcher, const NodeT &Node, ASTContext &Context) {
+  return matchDynamic(Matcher, ast_type_traits::DynTypedNode::create(Node), Context);
+}
+
+inline SmallVector<BoundNodes, 1>
+matchDynamic(internal::DynTypedMatcher Matcher, ASTContext &Context) {
+  internal::CollectMatchesCallback Callback;
+  MatchFinder Finder;
+  Finder.addDynamicMatcher(Matcher, &Callback);
+  Finder.matchAST(Context);
+  return std::move(Callback.Nodes);
+}
+
 } // end namespace ast_matchers
 } // end namespace clang
 


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