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1 | // Licensed to the Apache Software Foundation (ASF) under one |
2 | // or more contributor license agreements. See the NOTICE file | |
3 | // distributed with this work for additional information | |
4 | // regarding copyright ownership. The ASF licenses this file | |
5 | // to you under the Apache License, Version 2.0 (the | |
6 | // "License"); you may not use this file except in compliance | |
7 | // with the License. You may obtain a copy of the License at | |
8 | // | |
9 | // http://www.apache.org/licenses/LICENSE-2.0 | |
10 | // | |
11 | // Unless required by applicable law or agreed to in writing, | |
12 | // software distributed under the License is distributed on an | |
13 | // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
14 | // KIND, either express or implied. See the License for the | |
15 | // specific language governing permissions and limitations | |
16 | // under the License. | |
17 | ||
18 | // Cast types to boolean | |
19 | ||
20 | #include "arrow/array/builder_primitive.h" | |
21 | #include "arrow/compute/kernels/common.h" | |
22 | #include "arrow/compute/kernels/scalar_cast_internal.h" | |
23 | #include "arrow/util/value_parsing.h" | |
24 | ||
25 | namespace arrow { | |
26 | ||
27 | using internal::ParseValue; | |
28 | ||
29 | namespace compute { | |
30 | namespace internal { | |
31 | ||
32 | struct IsNonZero { | |
33 | template <typename OutValue, typename Arg0Value> | |
34 | static OutValue Call(KernelContext*, Arg0Value val, Status*) { | |
35 | return val != 0; | |
36 | } | |
37 | }; | |
38 | ||
39 | struct ParseBooleanString { | |
40 | template <typename OutValue, typename Arg0Value> | |
41 | static OutValue Call(KernelContext*, Arg0Value val, Status* st) { | |
42 | bool result = false; | |
43 | if (ARROW_PREDICT_FALSE(!ParseValue<BooleanType>(val.data(), val.size(), &result))) { | |
44 | *st = Status::Invalid("Failed to parse value: ", val); | |
45 | } | |
46 | return result; | |
47 | } | |
48 | }; | |
49 | ||
50 | std::vector<std::shared_ptr<CastFunction>> GetBooleanCasts() { | |
51 | auto func = std::make_shared<CastFunction>("cast_boolean", Type::BOOL); | |
52 | AddCommonCasts(Type::BOOL, boolean(), func.get()); | |
53 | AddZeroCopyCast(Type::BOOL, boolean(), boolean(), func.get()); | |
54 | ||
55 | for (const auto& ty : NumericTypes()) { | |
56 | ArrayKernelExec exec = | |
57 | GenerateNumeric<applicator::ScalarUnary, BooleanType, IsNonZero>(*ty); | |
58 | DCHECK_OK(func->AddKernel(ty->id(), {ty}, boolean(), exec)); | |
59 | } | |
60 | for (const auto& ty : BaseBinaryTypes()) { | |
61 | ArrayKernelExec exec = GenerateVarBinaryBase<applicator::ScalarUnaryNotNull, | |
62 | BooleanType, ParseBooleanString>(*ty); | |
63 | DCHECK_OK(func->AddKernel(ty->id(), {ty}, boolean(), exec)); | |
64 | } | |
65 | return {func}; | |
66 | } | |
67 | ||
68 | } // namespace internal | |
69 | } // namespace compute | |
70 | } // namespace arrow |