Further clean-up

Change-Id: Ice5fcb8f598b079afde3346f569d9619f1383506

compilerplugins/clang/check.cxx

@@ -82,6 +82,11 @@ ContextCheck DeclCheck::Operator(clang::OverloadedOperatorKind op) const {
         ? f->getDeclContext() : nullptr);
 }
 
+ContextCheck DeclCheck::MemberFunction() const {
+    auto m = llvm::dyn_cast_or_null<clang::CXXMethodDecl>(decl_);
+    return ContextCheck(m == nullptr ? nullptr : m->getParent());
+}
+
 TerminalCheck ContextCheck::GlobalNamespace() const {
     return TerminalCheck(
         context_ != nullptr

compilerplugins/clang/check.hxx

@@ -73,6 +73,8 @@ public:
 
     ContextCheck Operator(clang::OverloadedOperatorKind op) const;
 
+    ContextCheck MemberFunction() const;
+
 private:
     clang::Decl const * const decl_;
 };

compilerplugins/clang/passstuffbyref.cxx

@@ -73,10 +73,6 @@ private:
     std::vector<FDecl> functionDecls_;
 };
 
-bool startswith(const std::string& rStr, const char* pSubStr) {
-    return rStr.compare(0, strlen(pSubStr), pSubStr) == 0;
-}
-
 bool PassStuffByRef::TraverseFunctionDecl(FunctionDecl * decl) {
     return traverseAnyFunctionDecl(
         decl, &RecursiveASTVisitor::TraverseFunctionDecl);
@@ -207,8 +203,10 @@ void PassStuffByRef::checkParams(const FunctionDecl * functionDecl) {
         return;
     }
     // these functions are passed as parameters to another function
-    std::string aFunctionName = functionDecl->getQualifiedNameAsString();
-    if (startswith(aFunctionName, "slideshow::internal::ShapeAttributeLayer")) {
+    if (loplugin::DeclCheck(functionDecl).MemberFunction()
+        .Class("ShapeAttributeLayer").Namespace("internal")
+        .Namespace("slideshow").GlobalNamespace())
+    {
         return;
     }
     assert(!functionDecls_.empty());