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-rw-r--r--clang-tools-extra/change-namespace/ChangeNamespace.cpp30
-rw-r--r--clang-tools-extra/unittests/change-namespace/ChangeNamespaceTests.cpp201
2 files changed, 231 insertions, 0 deletions
diff --git a/clang-tools-extra/change-namespace/ChangeNamespace.cpp b/clang-tools-extra/change-namespace/ChangeNamespace.cpp
index 728aa2b8bc2..7d0840ab8d0 100644
--- a/clang-tools-extra/change-namespace/ChangeNamespace.cpp
+++ b/clang-tools-extra/change-namespace/ChangeNamespace.cpp
@@ -282,6 +282,10 @@ bool isDeclVisibleAtLocation(const SourceManager &SM, const Decl *D,
isNestedDeclContext(DeclCtx, D->getDeclContext()));
}
+AST_MATCHER(EnumDecl, isScoped) {
+ return Node.isScoped();
+}
+
} // anonymous namespace
ChangeNamespaceTool::ChangeNamespaceTool(
@@ -454,6 +458,17 @@ void ChangeNamespaceTool::registerMatchers(ast_matchers::MatchFinder *Finder) {
to(GlobalVarMatcher.bind("var_decl")))
.bind("var_ref"),
this);
+
+ // Handle unscoped enum constant.
+ auto UnscopedEnumMatcher = enumConstantDecl(hasParent(enumDecl(
+ hasParent(namespaceDecl()),
+ unless(anyOf(isScoped(), IsInMovedNs, hasAncestor(cxxRecordDecl()),
+ hasAncestor(namespaceDecl(isAnonymous())))))));
+ Finder->addMatcher(
+ declRefExpr(IsInMovedNs, hasAncestor(decl().bind("dc")),
+ to(UnscopedEnumMatcher.bind("enum_const_decl")))
+ .bind("enum_const_ref"),
+ this);
}
void ChangeNamespaceTool::run(
@@ -518,6 +533,21 @@ void ChangeNamespaceTool::run(
assert(Context && "Empty decl context.");
fixDeclRefExpr(Result, Context->getDeclContext(),
llvm::cast<NamedDecl>(Var), VarRef);
+ } else if (const auto *EnumConstRef =
+ Result.Nodes.getNodeAs<DeclRefExpr>("enum_const_ref")) {
+ // Do not rename the reference if it is already scoped by the EnumDecl name.
+ if (EnumConstRef->hasQualifier() &&
+ EnumConstRef->getQualifier()->getAsType()->isEnumeralType())
+ return;
+ const auto *EnumConstDecl =
+ Result.Nodes.getNodeAs<EnumConstantDecl>("enum_const_decl");
+ assert(EnumConstDecl);
+ const auto *Context = Result.Nodes.getNodeAs<Decl>("dc");
+ assert(Context && "Empty decl context.");
+ // FIXME: this would qualify "ns::VALUE" as "ns::EnumValue::VALUE". Fix it
+ // if it turns out to be an issue.
+ fixDeclRefExpr(Result, Context->getDeclContext(),
+ llvm::cast<NamedDecl>(EnumConstDecl), EnumConstRef);
} else if (const auto *FuncRef =
Result.Nodes.getNodeAs<DeclRefExpr>("func_ref")) {
// If this reference has been processed as a function call, we do not
diff --git a/clang-tools-extra/unittests/change-namespace/ChangeNamespaceTests.cpp b/clang-tools-extra/unittests/change-namespace/ChangeNamespaceTests.cpp
index e0b48a369b0..526878b3c9b 100644
--- a/clang-tools-extra/unittests/change-namespace/ChangeNamespaceTests.cpp
+++ b/clang-tools-extra/unittests/change-namespace/ChangeNamespaceTests.cpp
@@ -1774,6 +1774,207 @@ TEST_F(ChangeNamespaceTest, ShortenNamespaceSpecifierInAnonymousNamespace) {
EXPECT_EQ(format(Expected), runChangeNamespaceOnCode(Code));
}
+TEST_F(ChangeNamespaceTest, SimpleMoveEnum) {
+ std::string Code = "namespace na {\n"
+ "namespace nb {\n"
+ "enum class X { X1, X2 };\n"
+ "enum Y { Y1, Y2 };\n"
+ "} // namespace nb\n"
+ "} // namespace na\n";
+ std::string Expected = "\n\nnamespace x {\n"
+ "namespace y {\n"
+ "enum class X { X1, X2 };\n"
+ "enum Y { Y1, Y2 };\n"
+ "} // namespace y\n"
+ "} // namespace x\n";
+
+ EXPECT_EQ(format(Expected), runChangeNamespaceOnCode(Code));
+}
+
+TEST_F(ChangeNamespaceTest, ReferencesToEnums) {
+ std::string Code = "enum Glob { G1, G2 };\n"
+ "namespace na {\n"
+ "enum class X { X1 };\n"
+ "enum Y { Y1, Y2 };\n"
+ "namespace nb {\n"
+ "void f() {\n"
+ " Glob g1 = Glob::G1;\n"
+ " Glob g2 = G2;\n"
+ " X x1 = X::X1;\n"
+ " Y y1 = Y::Y1;\n"
+ " Y y2 = Y2;\n"
+ "}\n"
+ "} // namespace nb\n"
+ "} // namespace na\n";
+ std::string Expected = "enum Glob { G1, G2 };\n"
+ "namespace na {\n"
+ "enum class X { X1 };\n"
+ "enum Y { Y1, Y2 };\n"
+ "\n"
+ "} // namespace na\n"
+ "namespace x {\n"
+ "namespace y {\n"
+ "void f() {\n"
+ " Glob g1 = Glob::G1;\n"
+ " Glob g2 = G2;\n"
+ " ::na::X x1 = ::na::X::X1;\n"
+ " ::na::Y y1 = ::na::Y::Y1;\n"
+ " ::na::Y y2 = ::na::Y::Y2;\n"
+ "}\n"
+ "} // namespace y\n"
+ "} // namespace x\n";
+
+ EXPECT_EQ(format(Expected), runChangeNamespaceOnCode(Code));
+}
+
+TEST_F(ChangeNamespaceTest, NoRedundantEnumUpdate) {
+ std::string Code = "namespace ns {\n"
+ "enum class X { X1 };\n"
+ "enum Y { Y1, Y2 };\n"
+ "} // namespace ns\n"
+ "namespace na {\n"
+ "namespace nb {\n"
+ "void f() {\n"
+ " ns::X x1 = ns::X::X1;\n"
+ " ns::Y y1 = ns::Y::Y1;\n"
+ " ns::Y y2 = ns::Y2;\n"
+ "}\n"
+ "} // namespace nb\n"
+ "} // namespace na\n";
+ std::string Expected = "namespace ns {\n"
+ "enum class X { X1 };\n"
+ "enum Y { Y1, Y2 };\n"
+ "} // namespace ns\n"
+ "\n"
+ "namespace x {\n"
+ "namespace y {\n"
+ "void f() {\n"
+ " ns::X x1 = ns::X::X1;\n"
+ " ns::Y y1 = ns::Y::Y1;\n"
+ // FIXME: this is redundant
+ " ns::Y y2 = ::ns::Y::Y2;\n"
+ "}\n"
+ "} // namespace y\n"
+ "} // namespace x\n";
+ ;
+
+ EXPECT_EQ(format(Expected), runChangeNamespaceOnCode(Code));
+}
+
+TEST_F(ChangeNamespaceTest, EnumsAndUsingShadows) {
+ std::string Code = "namespace ns {\n"
+ "enum class X { X1 };\n"
+ "enum Y { Y1, Y2, Y3 };\n"
+ "} // namespace ns\n"
+ "using ns::X;\n"
+ "using ns::Y;\n"
+ "using ns::Y::Y2;\n"
+ "using ns::Y::Y3;\n"
+ "namespace na {\n"
+ "namespace nb {\n"
+ "void f() {\n"
+ " X x1 = X::X1;\n"
+ " Y y1 = Y::Y1;\n"
+ " Y y2 = Y2;\n"
+ " Y y3 = Y3;\n"
+ "}\n"
+ "} // namespace nb\n"
+ "} // namespace na\n";
+ std::string Expected = "namespace ns {\n"
+ "enum class X { X1 };\n"
+ "enum Y { Y1, Y2, Y3 };\n"
+ "} // namespace ns\n"
+ "using ns::X;\n"
+ "using ns::Y;\n"
+ "using ns::Y::Y2;\n"
+ "using ns::Y::Y3;\n"
+ "\n"
+ "namespace x {\n"
+ "namespace y {\n"
+ "void f() {\n"
+ " X x1 = X::X1;\n"
+ " Y y1 = Y::Y1;\n"
+ " Y y2 = Y2;\n"
+ " Y y3 = Y3;\n"
+ "}\n"
+ "} // namespace y\n"
+ "} // namespace x\n";
+
+ EXPECT_EQ(format(Expected), runChangeNamespaceOnCode(Code));
+}
+
+TEST_F(ChangeNamespaceTest, EnumsAndAliases) {
+ std::string Code = "namespace ns {\n"
+ "enum class X { X1 };\n"
+ "enum Y { Y1, Y2, Y3 };\n"
+ "} // namespace ns\n"
+ "typedef ns::X TX;\n"
+ "typedef ns::Y TY;\n"
+ "using UX = ns::X;\n"
+ "using UY = ns::Y;\n"
+ "namespace na {\n"
+ "namespace nb {\n"
+ "void f() {\n"
+ " ns::X x1 = ns::X::X1;\n"
+ " TX tx1 = TX::X1;\n"
+ " UX ux1 = UX::X1;\n"
+ " ns::Y y1 = ns::Y::Y1;\n"
+ " TY ty1 = TY::Y1;\n"
+ " UY uy1 = UY::Y1;\n"
+ "}\n"
+ "} // namespace nb\n"
+ "} // namespace na\n";
+ std::string Expected = "namespace ns {\n"
+ "enum class X { X1 };\n"
+ "enum Y { Y1, Y2, Y3 };\n"
+ "} // namespace ns\n"
+ "typedef ns::X TX;\n"
+ "typedef ns::Y TY;\n"
+ "using UX = ns::X;\n"
+ "using UY = ns::Y;\n"
+ "\n"
+ "namespace x {\n"
+ "namespace y {\n"
+ "void f() {\n"
+ " ns::X x1 = ns::X::X1;\n"
+ " TX tx1 = TX::X1;\n"
+ " UX ux1 = UX::X1;\n"
+ " ns::Y y1 = ns::Y::Y1;\n"
+ " TY ty1 = TY::Y1;\n"
+ " UY uy1 = UY::Y1;\n"
+ "}\n"
+ "} // namespace y\n"
+ "} // namespace x\n";
+
+ EXPECT_EQ(format(Expected), runChangeNamespaceOnCode(Code));
+}
+
+TEST_F(ChangeNamespaceTest, EnumInClass) {
+ std::string Code = "namespace na {\n"
+ "struct X { enum E { E1 }; };\n"
+ "namespace nb {\n"
+ "void f() {\n"
+ " X::E e = X::E1;\n"
+ " X::E ee = X::E::E1;\n"
+ "}\n"
+ "} // namespace nb\n"
+ "} // namespace na\n";
+ std::string Expected = "namespace na {\n"
+ "struct X { enum E { E1 }; };\n"
+ "\n"
+ "} // namespace na\n"
+ "namespace x {\n"
+ "namespace y {\n"
+ "void f() {\n"
+ " ::na::X::E e = ::na::X::E1;\n"
+ " ::na::X::E ee = ::na::X::E::E1;\n"
+ "}\n"
+ "} // namespace y\n"
+ "} // namespace x\n";
+
+ EXPECT_EQ(format(Expected), runChangeNamespaceOnCode(Code));
+}
+
} // anonymous namespace
} // namespace change_namespace
} // namespace clang
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