| 1 | //===-- lib/runtime/support.cpp ---------------------------------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "flang/Runtime/support.h" |
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| 10 | #include "ISO_Fortran_util.h" |
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| 11 | #include "flang-rt/runtime/descriptor.h" |
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| 12 | #include "flang-rt/runtime/type-info.h" |
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| 13 | |
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| 14 | namespace Fortran::runtime { |
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| 15 | extern "C" { |
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| 16 | RT_EXT_API_GROUP_BEGIN |
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| 17 | |
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| 18 | bool RTDEF(IsContiguous)(const Descriptor &descriptor) { |
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| 19 | return descriptor.IsContiguous(); |
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| 20 | } |
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| 21 | |
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| 22 | bool RTDEF(IsContiguousUpTo)(const Descriptor &descriptor, int dim) { |
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| 23 | return descriptor.IsContiguous(dim); |
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| 24 | } |
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| 25 | |
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| 26 | bool RTDEF(IsAssumedSize)(const Descriptor &descriptor) { |
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| 27 | return ISO::IsAssumedSize(&descriptor.raw()); |
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| 28 | } |
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| 29 | |
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| 30 | void RTDEF(CopyAndUpdateDescriptor)(Descriptor &to, const Descriptor &from, |
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| 31 | const typeInfo::DerivedType *newDynamicType, |
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| 32 | ISO::CFI_attribute_t newAttribute, enum LowerBoundModifier newLowerBounds) { |
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| 33 | to = from; |
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| 34 | if (newDynamicType) { |
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| 35 | DescriptorAddendum *toAddendum{to.Addendum()}; |
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| 36 | INTERNAL_CHECK(toAddendum); |
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| 37 | toAddendum->set_derivedType(newDynamicType); |
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| 38 | to.raw().elem_len = newDynamicType->sizeInBytes(); |
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| 39 | } |
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| 40 | to.raw().attribute = newAttribute; |
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| 41 | if (newLowerBounds != LowerBoundModifier::Preserve) { |
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| 42 | const ISO::CFI_index_t newLowerBound{ |
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| 43 | newLowerBounds == LowerBoundModifier::SetToOnes ? 1 : 0}; |
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| 44 | const int rank{to.rank()}; |
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| 45 | for (int i = 0; i < rank; ++i) { |
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| 46 | to.GetDimension(i).SetLowerBound(newLowerBound); |
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| 47 | } |
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| 48 | } |
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| 49 | } |
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| 50 | |
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| 51 | RT_EXT_API_GROUP_END |
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| 52 | } // extern "C" |
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| 53 | } // namespace Fortran::runtime |
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| 54 | |
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