Mark lambda closure classes as being implicitly-generated.
Summary: Closure classes for C++ lambdas are always compiler-generated. This one-line change calls setImplicit(true) on them at creation time, such that a default RecursiveASTVisitor (or any for which shouldVisitImplicitCode returns false) will skip them.
Reviewers: rsmith, dblaikie
Reviewed By: dblaikie
CC: klimek, revane, cfe-commits, jordan_rose
Differential Revision: http://llvm-reviews.chandlerc.com/D1593
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190073 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Tooling/RecursiveASTVisitorTest.cpp b/unittests/Tooling/RecursiveASTVisitorTest.cpp
index 2de9f15..b1d6f4a 100644
--- a/unittests/Tooling/RecursiveASTVisitorTest.cpp
+++ b/unittests/Tooling/RecursiveASTVisitorTest.cpp
@@ -522,4 +522,30 @@
LambdaDefaultCaptureVisitor::Lang_CXX11));
}
+// Checks for lambda classes that are not marked as implicitly-generated.
+// (There should be none.)
+class ClassVisitor : public ExpectedLocationVisitor<ClassVisitor> {
+public:
+ ClassVisitor() : SawNonImplicitLambdaClass(false) {}
+ bool VisitCXXRecordDecl(CXXRecordDecl* record) {
+ if (record->isLambda() && !record->isImplicit())
+ SawNonImplicitLambdaClass = true;
+ return true;
+ }
+
+ bool sawOnlyImplicitLambdaClasses() const {
+ return !SawNonImplicitLambdaClass;
+ }
+
+private:
+ bool SawNonImplicitLambdaClass;
+};
+
+TEST(RecursiveASTVisitor, LambdaClosureTypesAreImplicit) {
+ ClassVisitor Visitor;
+ EXPECT_TRUE(Visitor.runOver("auto lambda = []{};",
+ ClassVisitor::Lang_CXX11));
+ EXPECT_TRUE(Visitor.sawOnlyImplicitLambdaClasses());
+}
+
} // end namespace clang