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 #include <vector> 15 using namespace llvm; 16 17 // Check that the ArrayRef-of-pointer converting constructor only allows adding 18 // cv qualifiers (not removing them, or otherwise changing the type) 19 static_assert( 20 std::is_convertible<ArrayRef<int *>, ArrayRef<const int *>>::value, 21 "Adding const"); 22 static_assert( 23 std::is_convertible<ArrayRef<int *>, ArrayRef<volatile int *>>::value, 24 "Adding volatile"); 25 static_assert(!std::is_convertible<ArrayRef<int *>, ArrayRef<float *>>::value, 26 "Changing pointer of one type to a pointer of another"); 27 static_assert( 28 !std::is_convertible<ArrayRef<const int *>, ArrayRef<int *>>::value, 29 "Removing const"); 30 static_assert( 31 !std::is_convertible<ArrayRef<volatile int *>, ArrayRef<int *>>::value, 32 "Removing volatile"); 33 34 namespace llvm { 35 36 TEST(ArrayRefTest, AllocatorCopy) { 37 BumpPtrAllocator Alloc; 38 static const uint16_t Words1[] = { 1, 4, 200, 37 }; 39 ArrayRef<uint16_t> Array1 = makeArrayRef(Words1, 4); 40 static const uint16_t Words2[] = { 11, 4003, 67, 64000, 13 }; 41 ArrayRef<uint16_t> Array2 = makeArrayRef(Words2, 5); 42 ArrayRef<uint16_t> Array1c = Array1.copy(Alloc); 43 ArrayRef<uint16_t> Array2c = Array2.copy(Alloc);; 44 EXPECT_TRUE(Array1.equals(Array1c)); 45 EXPECT_NE(Array1.data(), Array1c.data()); 46 EXPECT_TRUE(Array2.equals(Array2c)); 47 EXPECT_NE(Array2.data(), Array2c.data()); 48 } 49 50 TEST(ArrayRefTest, DropBack) { 51 static const int TheNumbers[] = {4, 8, 15, 16, 23, 42}; 52 ArrayRef<int> AR1(TheNumbers); 53 ArrayRef<int> AR2(TheNumbers, AR1.size() - 1); 54 EXPECT_TRUE(AR1.drop_back().equals(AR2)); 55 } 56 57 TEST(ArrayRefTest, Equals) { 58 static const int A1[] = {1, 2, 3, 4, 5, 6, 7, 8}; 59 ArrayRef<int> AR1(A1); 60 EXPECT_TRUE(AR1.equals({1, 2, 3, 4, 5, 6, 7, 8})); 61 EXPECT_FALSE(AR1.equals({8, 1, 2, 4, 5, 6, 6, 7})); 62 EXPECT_FALSE(AR1.equals({2, 4, 5, 6, 6, 7, 8, 1})); 63 EXPECT_FALSE(AR1.equals({0, 1, 2, 4, 5, 6, 6, 7})); 64 EXPECT_FALSE(AR1.equals({1, 2, 42, 4, 5, 6, 7, 8})); 65 EXPECT_FALSE(AR1.equals({42, 2, 3, 4, 5, 6, 7, 8})); 66 EXPECT_FALSE(AR1.equals({1, 2, 3, 4, 5, 6, 7, 42})); 67 EXPECT_FALSE(AR1.equals({1, 2, 3, 4, 5, 6, 7})); 68 EXPECT_FALSE(AR1.equals({1, 2, 3, 4, 5, 6, 7, 8, 9})); 69 70 ArrayRef<int> AR1a = AR1.drop_back(); 71 EXPECT_TRUE(AR1a.equals({1, 2, 3, 4, 5, 6, 7})); 72 EXPECT_FALSE(AR1a.equals({1, 2, 3, 4, 5, 6, 7, 8})); 73 74 ArrayRef<int> AR1b = AR1a.slice(2, 4); 75 EXPECT_TRUE(AR1b.equals({3, 4, 5, 6})); 76 EXPECT_FALSE(AR1b.equals({2, 3, 4, 5, 6})); 77 EXPECT_FALSE(AR1b.equals({3, 4, 5, 6, 7})); 78 } 79 80 TEST(ArrayRefTest, EmptyEquals) { 81 EXPECT_TRUE(ArrayRef<unsigned>() == ArrayRef<unsigned>()); 82 } 83 84 TEST(ArrayRefTest, ConstConvert) { 85 int buf[4]; 86 for (int i = 0; i < 4; ++i) 87 buf[i] = i; 88 89 static int *A[] = {&buf[0], &buf[1], &buf[2], &buf[3]}; 90 ArrayRef<const int *> a((ArrayRef<int *>(A))); 91 a = ArrayRef<int *>(A); 92 } 93 94 static std::vector<int> ReturnTest12() { return {1, 2}; } 95 static void ArgTest12(ArrayRef<int> A) { 96 EXPECT_EQ(2U, A.size()); 97 EXPECT_EQ(1, A[0]); 98 EXPECT_EQ(2, A[1]); 99 } 100 101 TEST(ArrayRefTest, InitializerList) { 102 ArrayRef<int> A = { 0, 1, 2, 3, 4 }; 103 for (int i = 0; i < 5; ++i) 104 EXPECT_EQ(i, A[i]); 105 106 std::vector<int> B = ReturnTest12(); 107 A = B; 108 EXPECT_EQ(1, A[0]); 109 EXPECT_EQ(2, A[1]); 110 111 ArgTest12({1, 2}); 112 } 113 114 } // end anonymous namespace 115
