1 /*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <gtest/gtest.h>
18
19 #include "data_type-inl.h"
20
21 #include "base/array_ref.h"
22 #include "base/macros.h"
23 #include "dex/primitive.h"
24
25 namespace art {
26
27 template <DataType::Type data_type, Primitive::Type primitive_type>
CheckConversion()28 static void CheckConversion() {
29 static_assert(data_type == DataTypeFromPrimitive(primitive_type), "Conversion check.");
30 static_assert(DataType::Size(data_type) == Primitive::ComponentSize(primitive_type),
31 "Size check.");
32 }
33
TEST(DataType,SizeAgainstPrimitive)34 TEST(DataType, SizeAgainstPrimitive) {
35 CheckConversion<DataType::Type::kVoid, Primitive::kPrimVoid>();
36 CheckConversion<DataType::Type::kBool, Primitive::kPrimBoolean>();
37 CheckConversion<DataType::Type::kInt8, Primitive::kPrimByte>();
38 CheckConversion<DataType::Type::kUint16, Primitive::kPrimChar>();
39 CheckConversion<DataType::Type::kInt16, Primitive::kPrimShort>();
40 CheckConversion<DataType::Type::kInt32, Primitive::kPrimInt>();
41 CheckConversion<DataType::Type::kInt64, Primitive::kPrimLong>();
42 CheckConversion<DataType::Type::kFloat32, Primitive::kPrimFloat>();
43 CheckConversion<DataType::Type::kFloat64, Primitive::kPrimDouble>();
44 CheckConversion<DataType::Type::kReference, Primitive::kPrimNot>();
45 }
46
TEST(DataType,Names)47 TEST(DataType, Names) {
48 #define CHECK_NAME(type) EXPECT_STREQ(#type, DataType::PrettyDescriptor(DataType::Type::k##type))
49 CHECK_NAME(Void);
50 CHECK_NAME(Bool);
51 CHECK_NAME(Int8);
52 CHECK_NAME(Uint16);
53 CHECK_NAME(Int16);
54 CHECK_NAME(Int32);
55 CHECK_NAME(Int64);
56 CHECK_NAME(Float32);
57 CHECK_NAME(Float64);
58 CHECK_NAME(Reference);
59 #undef CHECK_NAME
60 }
61
TEST(DataType,IsTypeConversionImplicit)62 TEST(DataType, IsTypeConversionImplicit) {
63 static const DataType::Type kIntegralTypes[] = {
64 DataType::Type::kBool,
65 DataType::Type::kUint8,
66 DataType::Type::kInt8,
67 DataType::Type::kUint16,
68 DataType::Type::kInt16,
69 DataType::Type::kInt32,
70 DataType::Type::kInt64,
71 };
72 const ArrayRef<const DataType::Type> kIntegralInputTypes(kIntegralTypes);
73 // Note: kBool cannot be used as a result type.
74 DCHECK_EQ(kIntegralTypes[0], DataType::Type::kBool);
75 const ArrayRef<const DataType::Type> kIntegralResultTypes = kIntegralInputTypes.SubArray(1u);
76
77 static const bool kImplicitIntegralConversions[][arraysize(kIntegralTypes)] = {
78 // Bool Uint8 Int8 Uint16 Int16 Int32 Int64
79 { /* Bool N/A */ true, true, true, true, true, false },
80 { /* Uint8 N/A */ true, false, true, true, true, false },
81 { /* Int8 N/A */ false, true, false, true, true, false },
82 { /* Uint16 N/A */ false, false, true, false, true, false },
83 { /* Int16 N/A */ false, false, false, true, true, false },
84 { /* Int32 N/A */ false, false, false, false, true, false },
85 { /* Int64 N/A */ false, false, false, false, false, true },
86 };
87 static_assert(arraysize(kIntegralTypes) == arraysize(kImplicitIntegralConversions), "size check");
88
89 for (size_t input_index = 0; input_index != kIntegralInputTypes.size(); ++input_index) {
90 DataType::Type input_type = kIntegralInputTypes[input_index];
91 for (size_t result_index = 1u; result_index != kIntegralResultTypes.size(); ++result_index) {
92 DataType::Type result_type = kIntegralResultTypes[result_index];
93 EXPECT_EQ(kImplicitIntegralConversions[input_index][result_index],
94 DataType::IsTypeConversionImplicit(input_type, result_type))
95 << input_type << " " << result_type;
96 }
97 }
98 for (DataType::Type input_type : kIntegralInputTypes) {
99 EXPECT_FALSE(DataType::IsTypeConversionImplicit(input_type, DataType::Type::kFloat32));
100 EXPECT_FALSE(DataType::IsTypeConversionImplicit(input_type, DataType::Type::kFloat64));
101 }
102 for (DataType::Type result_type : kIntegralResultTypes) {
103 EXPECT_FALSE(DataType::IsTypeConversionImplicit(DataType::Type::kFloat32, result_type));
104 EXPECT_FALSE(DataType::IsTypeConversionImplicit(DataType::Type::kFloat64, result_type));
105 }
106 EXPECT_TRUE(
107 DataType::IsTypeConversionImplicit(DataType::Type::kFloat32, DataType::Type::kFloat32));
108 EXPECT_FALSE(
109 DataType::IsTypeConversionImplicit(DataType::Type::kFloat32, DataType::Type::kFloat64));
110 EXPECT_FALSE(
111 DataType::IsTypeConversionImplicit(DataType::Type::kFloat64, DataType::Type::kFloat32));
112 EXPECT_TRUE(
113 DataType::IsTypeConversionImplicit(DataType::Type::kFloat64, DataType::Type::kFloat64));
114 }
115
116 } // namespace art
117