| 1 | //===-- lib/Semantics/data-to-inits.h -------------------------------------===// |
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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 | #ifndef FORTRAN_SEMANTICS_DATA_TO_INITS_H_ |
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| 10 | #define FORTRAN_SEMANTICS_DATA_TO_INITS_H_ |
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| 11 | |
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| 12 | #include "flang/Common/interval.h" |
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| 13 | #include "flang/Evaluate/fold-designator.h" |
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| 14 | #include "flang/Evaluate/initial-image.h" |
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| 15 | #include "flang/Support/default-kinds.h" |
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| 16 | #include <list> |
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| 17 | #include <map> |
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| 18 | |
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| 19 | namespace Fortran::parser { |
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| 20 | struct DataStmtSet; |
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| 21 | struct DataStmtValue; |
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| 22 | } // namespace Fortran::parser |
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| 23 | namespace Fortran::evaluate { |
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| 24 | class ExpressionAnalyzer; |
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| 25 | } |
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| 26 | namespace Fortran::semantics { |
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| 27 | |
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| 28 | class Symbol; |
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| 29 | |
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| 30 | struct SymbolDataInitialization { |
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| 31 | using Range = common::Interval<common::ConstantSubscript>; |
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| 32 | explicit SymbolDataInitialization(std::size_t bytes) : image{bytes} {} |
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| 33 | SymbolDataInitialization(SymbolDataInitialization &&) = default; |
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| 34 | |
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| 35 | void NoteInitializedRange(Range range) { |
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| 36 | if (initializedRanges.empty() || |
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| 37 | !initializedRanges.back().AnnexIfPredecessor(range)) { |
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| 38 | initializedRanges.emplace_back(range); |
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| 39 | } |
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| 40 | } |
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| 41 | void NoteInitializedRange( |
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| 42 | common::ConstantSubscript offset, std::size_t size) { |
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| 43 | NoteInitializedRange(Range{offset, size}); |
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| 44 | } |
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| 45 | void NoteInitializedRange(evaluate::OffsetSymbol offsetSymbol) { |
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| 46 | NoteInitializedRange(offsetSymbol.offset(), offsetSymbol.size()); |
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| 47 | } |
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| 48 | |
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| 49 | evaluate::InitialImage image; |
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| 50 | std::list<Range> initializedRanges; |
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| 51 | }; |
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| 52 | |
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| 53 | using DataInitializations = std::map<const Symbol *, SymbolDataInitialization>; |
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| 54 | |
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| 55 | // Matches DATA statement variables with their values and checks |
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| 56 | // compatibility. |
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| 57 | void AccumulateDataInitializations(DataInitializations &, |
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| 58 | evaluate::ExpressionAnalyzer &, const parser::DataStmtSet &); |
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| 59 | |
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| 60 | // For legacy DATA-style initialization extension: integer n(2)/1,2/ |
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| 61 | void AccumulateDataInitializations(DataInitializations &, |
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| 62 | evaluate::ExpressionAnalyzer &, const Symbol &, |
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| 63 | const std::list<common::Indirection<parser::DataStmtValue>> &); |
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| 64 | |
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| 65 | void ConvertToInitializers( |
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| 66 | DataInitializations &, evaluate::ExpressionAnalyzer &); |
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| 67 | |
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| 68 | } // namespace Fortran::semantics |
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| 69 | #endif // FORTRAN_SEMANTICS_DATA_TO_INITS_H_ |
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| 70 | |
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