1 //===- llvm/unittest/ADT/ArrayRefTest.cpp - ArrayRef unit tests -----------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "llvm/ADT/ArrayRef.h" 11 #include "llvm/Support/Allocator.h" 12 #include "llvm/Support/raw_ostream.h" 13 #include "gtest/gtest.h" 14 using namespace llvm; 15 16 // Check that the ArrayRef-of-pointer converting constructor only allows adding 17 // cv qualifiers (not removing them, or otherwise changing the type) 18 static_assert( 19 std::is_convertible<ArrayRef<int *>, ArrayRef<const int *>>::value, 20 "Adding const"); 21 static_assert( 22 std::is_convertible<ArrayRef<int *>, ArrayRef<volatile int *>>::value, 23 "Adding volatile"); 24 static_assert(!std::is_convertible<ArrayRef<int *>, ArrayRef<float *>>::value, 25 "Changing pointer of one type to a pointer of another"); 26 static_assert( 27 !std::is_convertible<ArrayRef<const int *>, ArrayRef<int *>>::value, 28 "Removing const"); 29 static_assert( 30 !std::is_convertible<ArrayRef<volatile int *>, ArrayRef<int *>>::value, 31 "Removing volatile"); 32 33 namespace llvm { 34 35 TEST(ArrayRefTest, AllocatorCopy) { 36 BumpPtrAllocator Alloc; 37 static const uint16_t Words1[] = { 1, 4, 200, 37 }; 38 ArrayRef<uint16_t> Array1 = makeArrayRef(Words1, 4); 39 static const uint16_t Words2[] = { 11, 4003, 67, 64000, 13 }; 40 ArrayRef<uint16_t> Array2 = makeArrayRef(Words2, 5); 41 ArrayRef<uint16_t> Array1c = Array1.copy(Alloc); 42 ArrayRef<uint16_t> Array2c = Array2.copy(Alloc);; 43 EXPECT_TRUE(Array1.equals(Array1c)); 44 EXPECT_NE(Array1.data(), Array1c.data()); 45 EXPECT_TRUE(Array2.equals(Array2c)); 46 EXPECT_NE(Array2.data(), Array2c.data()); 47 } 48 49 TEST(ArrayRefTest, DropBack) { 50 static const int TheNumbers[] = {4, 8, 15, 16, 23, 42}; 51 ArrayRef<int> AR1(TheNumbers); 52 ArrayRef<int> AR2(TheNumbers, AR1.size() - 1); 53 EXPECT_TRUE(AR1.drop_back().equals(AR2)); 54 } 55 56 TEST(ArrayRefTest, Equals) { 57 static const int A1[] = {1, 2, 3, 4, 5, 6, 7, 8}; 58 ArrayRef<int> AR1(A1); 59 EXPECT_TRUE(AR1.equals(1, 2, 3, 4, 5, 6, 7, 8)); 60 EXPECT_FALSE(AR1.equals(8, 1, 2, 4, 5, 6, 6, 7)); 61 EXPECT_FALSE(AR1.equals(2, 4, 5, 6, 6, 7, 8, 1)); 62 EXPECT_FALSE(AR1.equals(0, 1, 2, 4, 5, 6, 6, 7)); 63 EXPECT_FALSE(AR1.equals(1, 2, 42, 4, 5, 6, 7, 8)); 64 EXPECT_FALSE(AR1.equals(42, 2, 3, 4, 5, 6, 7, 8)); 65 EXPECT_FALSE(AR1.equals(1, 2, 3, 4, 5, 6, 7, 42)); 66 EXPECT_FALSE(AR1.equals(1, 2, 3, 4, 5, 6, 7)); 67 EXPECT_FALSE(AR1.equals(1, 2, 3, 4, 5, 6, 7, 8, 9)); 68 69 ArrayRef<int> AR1a = AR1.drop_back(); 70 EXPECT_TRUE(AR1a.equals(1, 2, 3, 4, 5, 6, 7)); 71 EXPECT_FALSE(AR1a.equals(1, 2, 3, 4, 5, 6, 7, 8)); 72 73 ArrayRef<int> AR1b = AR1a.slice(2, 4); 74 EXPECT_TRUE(AR1b.equals(3, 4, 5, 6)); 75 EXPECT_FALSE(AR1b.equals(2, 3, 4, 5, 6)); 76 EXPECT_FALSE(AR1b.equals(3, 4, 5, 6, 7)); 77 } 78 79 TEST(ArrayRefTest, EmptyEquals) { 80 EXPECT_TRUE(ArrayRef<unsigned>() == ArrayRef<unsigned>()); 81 } 82 83 TEST(ArrayRefTest, ConstConvert) { 84 int buf[4]; 85 for (int i = 0; i < 4; ++i) 86 buf[i] = i; 87 88 static int *A[] = {&buf[0], &buf[1], &buf[2], &buf[3]}; 89 ArrayRef<const int *> a((ArrayRef<int *>(A))); 90 a = ArrayRef<int *>(A); 91 } 92 93 } // end anonymous namespace 94