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//===- unittests/ADT/IListNodeBaseTest.cpp - ilist_node_base unit tests ---===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/ilist_node_base.h"
#include "gtest/gtest.h"
#include <type_traits>
using namespace llvm;
namespace {
class Parent {};
typedef ilist_node_base<false, void> RawNode;
typedef ilist_node_base<true, void> TrackingNode;
typedef ilist_node_base<false, Parent> ParentNode;
typedef ilist_node_base<true, Parent> ParentTrackingNode;
TEST(IListNodeBaseTest, DefaultConstructor) {
RawNode A;
EXPECT_EQ(nullptr, A.getPrev());
EXPECT_EQ(nullptr, A.getNext());
EXPECT_FALSE(A.isKnownSentinel());
TrackingNode TA;
EXPECT_EQ(nullptr, TA.getPrev());
EXPECT_EQ(nullptr, TA.getNext());
EXPECT_FALSE(TA.isKnownSentinel());
EXPECT_FALSE(TA.isSentinel());
ParentNode PA;
EXPECT_EQ(nullptr, PA.getPrev());
EXPECT_EQ(nullptr, PA.getNext());
EXPECT_EQ(nullptr, PA.getNodeBaseParent());
EXPECT_FALSE(PA.isKnownSentinel());
ParentTrackingNode PTA;
EXPECT_EQ(nullptr, PTA.getPrev());
EXPECT_EQ(nullptr, PTA.getNext());
EXPECT_EQ(nullptr, PTA.getNodeBaseParent());
EXPECT_FALSE(PTA.isKnownSentinel());
EXPECT_FALSE(PTA.isSentinel());
}
TEST(IListNodeBaseTest, setPrevAndNext) {
RawNode A, B, C;
A.setPrev(&B);
EXPECT_EQ(&B, A.getPrev());
EXPECT_EQ(nullptr, A.getNext());
EXPECT_EQ(nullptr, B.getPrev());
EXPECT_EQ(nullptr, B.getNext());
EXPECT_EQ(nullptr, C.getPrev());
EXPECT_EQ(nullptr, C.getNext());
A.setNext(&C);
EXPECT_EQ(&B, A.getPrev());
EXPECT_EQ(&C, A.getNext());
EXPECT_EQ(nullptr, B.getPrev());
EXPECT_EQ(nullptr, B.getNext());
EXPECT_EQ(nullptr, C.getPrev());
EXPECT_EQ(nullptr, C.getNext());
TrackingNode TA, TB, TC;
TA.setPrev(&TB);
EXPECT_EQ(&TB, TA.getPrev());
EXPECT_EQ(nullptr, TA.getNext());
EXPECT_EQ(nullptr, TB.getPrev());
EXPECT_EQ(nullptr, TB.getNext());
EXPECT_EQ(nullptr, TC.getPrev());
EXPECT_EQ(nullptr, TC.getNext());
TA.setNext(&TC);
EXPECT_EQ(&TB, TA.getPrev());
EXPECT_EQ(&TC, TA.getNext());
EXPECT_EQ(nullptr, TB.getPrev());
EXPECT_EQ(nullptr, TB.getNext());
EXPECT_EQ(nullptr, TC.getPrev());
EXPECT_EQ(nullptr, TC.getNext());
ParentNode PA, PB, PC;
PA.setPrev(&PB);
EXPECT_EQ(&PB, PA.getPrev());
EXPECT_EQ(nullptr, PA.getNext());
EXPECT_EQ(nullptr, PB.getPrev());
EXPECT_EQ(nullptr, PB.getNext());
EXPECT_EQ(nullptr, PC.getPrev());
EXPECT_EQ(nullptr, PC.getNext());
PA.setNext(&PC);
EXPECT_EQ(&PB, PA.getPrev());
EXPECT_EQ(&PC, PA.getNext());
EXPECT_EQ(nullptr, PB.getPrev());
EXPECT_EQ(nullptr, PB.getNext());
EXPECT_EQ(nullptr, PC.getPrev());
EXPECT_EQ(nullptr, PC.getNext());
ParentTrackingNode PTA, PTB, PTC;
PTA.setPrev(&PTB);
EXPECT_EQ(&PTB, PTA.getPrev());
EXPECT_EQ(nullptr, PTA.getNext());
EXPECT_EQ(nullptr, PTB.getPrev());
EXPECT_EQ(nullptr, PTB.getNext());
EXPECT_EQ(nullptr, PTC.getPrev());
EXPECT_EQ(nullptr, PTC.getNext());
PTA.setNext(&PTC);
EXPECT_EQ(&PTB, PTA.getPrev());
EXPECT_EQ(&PTC, PTA.getNext());
EXPECT_EQ(nullptr, PTB.getPrev());
EXPECT_EQ(nullptr, PTB.getNext());
EXPECT_EQ(nullptr, PTC.getPrev());
EXPECT_EQ(nullptr, PTC.getNext());
}
TEST(IListNodeBaseTest, isKnownSentinel) {
// Without sentinel tracking.
RawNode A, B;
EXPECT_FALSE(A.isKnownSentinel());
A.setPrev(&B);
A.setNext(&B);
EXPECT_EQ(&B, A.getPrev());
EXPECT_EQ(&B, A.getNext());
EXPECT_FALSE(A.isKnownSentinel());
A.initializeSentinel();
EXPECT_FALSE(A.isKnownSentinel());
EXPECT_EQ(&B, A.getPrev());
EXPECT_EQ(&B, A.getNext());
// With sentinel tracking.
TrackingNode TA, TB;
EXPECT_FALSE(TA.isKnownSentinel());
EXPECT_FALSE(TA.isSentinel());
TA.setPrev(&TB);
TA.setNext(&TB);
EXPECT_EQ(&TB, TA.getPrev());
EXPECT_EQ(&TB, TA.getNext());
EXPECT_FALSE(TA.isKnownSentinel());
EXPECT_FALSE(TA.isSentinel());
TA.initializeSentinel();
EXPECT_TRUE(TA.isKnownSentinel());
EXPECT_TRUE(TA.isSentinel());
EXPECT_EQ(&TB, TA.getPrev());
EXPECT_EQ(&TB, TA.getNext());
// Without sentinel tracking (with Parent).
ParentNode PA, PB;
EXPECT_FALSE(PA.isKnownSentinel());
PA.setPrev(&PB);
PA.setNext(&PB);
EXPECT_EQ(&PB, PA.getPrev());
EXPECT_EQ(&PB, PA.getNext());
EXPECT_FALSE(PA.isKnownSentinel());
PA.initializeSentinel();
EXPECT_FALSE(PA.isKnownSentinel());
EXPECT_EQ(&PB, PA.getPrev());
EXPECT_EQ(&PB, PA.getNext());
// With sentinel tracking (with Parent).
ParentTrackingNode PTA, PTB;
EXPECT_FALSE(PTA.isKnownSentinel());
EXPECT_FALSE(PTA.isSentinel());
PTA.setPrev(&PTB);
PTA.setNext(&PTB);
EXPECT_EQ(&PTB, PTA.getPrev());
EXPECT_EQ(&PTB, PTA.getNext());
EXPECT_FALSE(PTA.isKnownSentinel());
EXPECT_FALSE(PTA.isSentinel());
PTA.initializeSentinel();
EXPECT_TRUE(PTA.isKnownSentinel());
EXPECT_TRUE(PTA.isSentinel());
EXPECT_EQ(&PTB, PTA.getPrev());
EXPECT_EQ(&PTB, PTA.getNext());
}
TEST(IListNodeBaseTest, nodeBaseParent) {
Parent Par;
ParentNode PA;
const ParentNode CPA;
EXPECT_EQ(nullptr, PA.getNodeBaseParent());
PA.setNodeBaseParent(&Par);
EXPECT_EQ(&Par, PA.getNodeBaseParent());
ParentTrackingNode PTA;
EXPECT_EQ(nullptr, PTA.getNodeBaseParent());
PTA.setNodeBaseParent(&Par);
EXPECT_EQ(&Par, PTA.getNodeBaseParent());
using VarParentTy = std::remove_pointer_t<decltype(PA.getNodeBaseParent())>;
using ConstParentTy =
std::remove_pointer_t<decltype(CPA.getNodeBaseParent())>;
static_assert(
std::is_const_v<ConstParentTy> &&
std::is_same_v<VarParentTy, std::remove_const_t<ConstParentTy>>,
"`getNodeBaseParent() const` adds const to parent type");
}
} // end namespace
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