diff options
Diffstat (limited to 'compilerplugins/clang/test/unusedenumconstants.cxx')
-rw-r--r-- | compilerplugins/clang/test/unusedenumconstants.cxx | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/compilerplugins/clang/test/unusedenumconstants.cxx b/compilerplugins/clang/test/unusedenumconstants.cxx new file mode 100644 index 0000000000..3f69e8993f --- /dev/null +++ b/compilerplugins/clang/test/unusedenumconstants.cxx @@ -0,0 +1,120 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +#include <o3tl/typed_flags_set.hxx> + +namespace test1 +{ +void test1() +{ + enum NameClashMode + { + NONE, + NO_CLASH // expected-error {{write NO_CLASH [loplugin:unusedenumconstants]}} + }; + NameClashMode eNameClashMode = NO_CLASH; + (void)eNameClashMode; +} +}; + +enum class BrowseMode +{ + Modules = 0x01, // expected-error {{read Modules [loplugin:unusedenumconstants]}} + Top = 0x02, // expected-error {{write Top [loplugin:unusedenumconstants]}} + Bottom = 0x04, // expected-error {{read Bottom [loplugin:unusedenumconstants]}} + Left = 0x08, // expected-error {{write Left [loplugin:unusedenumconstants]}} +}; +namespace o3tl +{ +template <> struct typed_flags<BrowseMode> : is_typed_flags<BrowseMode, 0xf> +{ +}; +} +BrowseMode g_flags; +int test2(BrowseMode nMode) +{ + if (nMode & BrowseMode::Modules) + return 1; + g_flags |= BrowseMode::Top; + return 0; +} +bool test2b(BrowseMode nMode) { return bool(nMode & BrowseMode::Bottom); } +BrowseMode test2c() { return BrowseMode::Left; } + +enum class Enum3 +{ + One = 0x01, // expected-error {{write One [loplugin:unusedenumconstants]}} + Two = 0x02 // expected-error {{write Two [loplugin:unusedenumconstants]}} +}; +namespace o3tl +{ +template <> struct typed_flags<Enum3> : is_typed_flags<Enum3, 0x3> +{ +}; +} +void test3_foo(Enum3); +void test3() { test3_foo(Enum3::One | Enum3::Two); } + +namespace test4 +{ +enum Enum4 +{ + ONE, // expected-error {{write ONE [loplugin:unusedenumconstants]}} + TWO +}; +struct Test4Base +{ + Test4Base(Enum4) {} +}; +struct Test4 : public Test4Base +{ + Test4() + : Test4Base(Enum4::ONE) + { + } +}; +}; + +//----------------------------------------------------------------------------------- + +// check that conditional operator walks up the tree +namespace test5 +{ +enum Enum +{ + ONE, // expected-error {{write ONE [loplugin:unusedenumconstants]}} + TWO // expected-error {{write TWO [loplugin:unusedenumconstants]}} +}; + +Enum foo(int x) { return x == 1 ? Enum::ONE : Enum::TWO; } +}; + +//----------------------------------------------------------------------------------- +// Ignore a common pattern that does not introduce any new information, merely removes +// information. +enum class Enum6 +{ + Modules = 0x01, // expected-error {{write Modules [loplugin:unusedenumconstants]}} + Top = 0x02, +}; +namespace o3tl +{ +template <> struct typed_flags<Enum6> : is_typed_flags<Enum6, 0x03> +{ +}; +} +void test6() +{ + Enum6 foo = Enum6::Modules; + foo &= ~Enum6::Top; + foo &= (~Enum6::Top); + (void)foo; +}; + +/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */ |