//===-- include/flang/Common/Fortran-features.h -----------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef FORTRAN_COMMON_FORTRAN_FEATURES_H_
#define FORTRAN_COMMON_FORTRAN_FEATURES_H_
#include "flang/Common/Fortran.h"
#include "flang/Common/enum-set.h"
#include "flang/Common/idioms.h"
#include <vector>
namespace Fortran::common {
// Non-conforming extensions & legacies
ENUM_CLASS(LanguageFeature, BackslashEscapes, OldDebugLines,
FixedFormContinuationWithColumn1Ampersand, LogicalAbbreviations,
XOROperator, PunctuationInNames, OptionalFreeFormSpace, BOZExtensions,
EmptyStatement, AlternativeNE, ExecutionPartNamelist, DECStructures,
DoubleComplex, Byte, StarKind, ExponentMatchingKindParam, QuadPrecision,
SlashInitialization, TripletInArrayConstructor, MissingColons,
SignedComplexLiteral, OldStyleParameter, ComplexConstructor, PercentLOC,
SignedMultOperand, FileName, Carriagecontrol, Convert, Dispose,
IOListLeadingComma, AbbreviatedEditDescriptor, ProgramParentheses,
PercentRefAndVal, OmitFunctionDummies, CrayPointer, Hollerith, ArithmeticIF,
Assign, AssignedGOTO, Pause, OpenACC, OpenMP, CUDA, CruftAfterAmpersand,
ClassicCComments, AdditionalFormats, BigIntLiterals, RealDoControls,
EquivalenceNumericWithCharacter, EquivalenceNonDefaultNumeric,
EquivalenceSameNonSequence, AdditionalIntrinsics, AnonymousParents,
OldLabelDoEndStatements, LogicalIntegerAssignment, EmptySourceFile,
ProgramReturn, ImplicitNoneTypeNever, ImplicitNoneTypeAlways,
ForwardRefImplicitNone, OpenAccessAppend, BOZAsDefaultInteger,
DistinguishableSpecifics, DefaultSave, PointerInSeqType, NonCharacterFormat,
SaveMainProgram, SaveBigMainProgramVariables,
DistinctArrayConstructorLengths, PPCVector, RelaxedIntentInChecking,
ForwardRefImplicitNoneData, NullActualForAllocatable,
ActualIntegerConvertedToSmallerKind, HollerithOrCharacterAsBOZ,
BindingAsProcedure, StatementFunctionExtensions,
UseGenericIntrinsicWhenSpecificDoesntMatch, DataStmtExtensions,
RedundantContiguous, RedundantAttribute, InitBlankCommon,
EmptyBindCDerivedType, MiscSourceExtensions, AllocateToOtherLength,
LongNames, IntrinsicAsSpecific, BenignNameClash, BenignRedundancy,
NullMoldAllocatableComponentValue, NopassScalarBase, MiscUseExtensions,
ImpliedDoIndexScope, DistinctCommonSizes, OddIndexVariableRestrictions,
IndistinguishableSpecifics, SubroutineAndFunctionSpecifics,
EmptySequenceType, NonSequenceCrayPointee, BranchIntoConstruct,
BadBranchTarget, ConvertedArgument, HollerithPolymorphic, ListDirectedSize,
NonBindCInteroperability, CudaManaged, CudaUnified,
PolymorphicActualAllocatableOrPointerToMonomorphicDummy, RelaxedPureDummy,
UndefinableAsynchronousOrVolatileActual, AutomaticInMainProgram, PrintCptr,
SavedLocalInSpecExpr)
// Portability and suspicious usage warnings
ENUM_CLASS(UsageWarning, Portability, PointerToUndefinable,
NonTargetPassedToTarget, PointerToPossibleNoncontiguous,
ShortCharacterActual, ShortArrayActual, ImplicitInterfaceActual,
PolymorphicTransferArg, PointerComponentTransferArg, TransferSizePresence,
F202XAllocatableBreakingChange, OptionalMustBePresent, CommonBlockPadding,
LogicalVsCBool, BindCCharLength, ProcDummyArgShapes, ExternalNameConflict,
FoldingException, FoldingAvoidsRuntimeCrash, FoldingValueChecks,
FoldingFailure, FoldingLimit, Interoperability, Bounds, Preprocessing,
Scanning, OpenAccUsage, ProcPointerCompatibility, VoidMold,
KnownBadImplicitInterface, EmptyCase, CaseOverflow, CUDAUsage,
IgnoreTKRUsage, ExternalInterfaceMismatch, DefinedOperatorArgs, Final,
ZeroDoStep, UnusedForallIndex, OpenMPUsage, ModuleFile, DataLength,
IgnoredDirective, HomonymousSpecific, HomonymousResult,
IgnoredIntrinsicFunctionType, PreviousScalarUse,
RedeclaredInaccessibleComponent, ImplicitShared, IndexVarRedefinition,
IncompatibleImplicitInterfaces, BadTypeForTarget,
VectorSubscriptFinalization, UndefinedFunctionResult, UselessIomsg)
using LanguageFeatures = EnumSet<LanguageFeature, LanguageFeature_enumSize>;
using UsageWarnings = EnumSet<UsageWarning, UsageWarning_enumSize>;
class LanguageFeatureControl {
public:
LanguageFeatureControl() {
// These features must be explicitly enabled by command line options.
disable_.set(LanguageFeature::OldDebugLines);
disable_.set(LanguageFeature::OpenACC);
disable_.set(LanguageFeature::OpenMP);
disable_.set(LanguageFeature::CUDA); // !@cuf
disable_.set(LanguageFeature::CudaManaged);
disable_.set(LanguageFeature::CudaUnified);
disable_.set(LanguageFeature::ImplicitNoneTypeNever);
disable_.set(LanguageFeature::ImplicitNoneTypeAlways);
disable_.set(LanguageFeature::DefaultSave);
disable_.set(LanguageFeature::SaveMainProgram);
// These features, if enabled, conflict with valid standard usage,
// so there are disabled here by default.
disable_.set(LanguageFeature::BackslashEscapes);
disable_.set(LanguageFeature::LogicalAbbreviations);
disable_.set(LanguageFeature::XOROperator);
disable_.set(LanguageFeature::OldStyleParameter);
// These warnings are enabled by default, but only because they used
// to be unconditional. TODO: prune this list
warnLanguage_.set(LanguageFeature::ExponentMatchingKindParam);
warnLanguage_.set(LanguageFeature::RedundantAttribute);
warnLanguage_.set(LanguageFeature::SubroutineAndFunctionSpecifics);
warnLanguage_.set(LanguageFeature::EmptySequenceType);
warnLanguage_.set(LanguageFeature::NonSequenceCrayPointee);
warnLanguage_.set(LanguageFeature::BranchIntoConstruct);
warnLanguage_.set(LanguageFeature::BadBranchTarget);
warnLanguage_.set(LanguageFeature::ConvertedArgument);
warnLanguage_.set(LanguageFeature::HollerithPolymorphic);
warnLanguage_.set(LanguageFeature::ListDirectedSize);
warnUsage_.set(UsageWarning::ShortArrayActual);
warnUsage_.set(UsageWarning::FoldingException);
warnUsage_.set(UsageWarning::FoldingAvoidsRuntimeCrash);
warnUsage_.set(UsageWarning::FoldingValueChecks);
warnUsage_.set(UsageWarning::FoldingFailure);
warnUsage_.set(UsageWarning::FoldingLimit);
warnUsage_.set(UsageWarning::Interoperability);
warnUsage_.set(UsageWarning::Bounds);
warnUsage_.set(UsageWarning::Preprocessing);
warnUsage_.set(UsageWarning::Scanning);
warnUsage_.set(UsageWarning::OpenAccUsage);
warnUsage_.set(UsageWarning::ProcPointerCompatibility);
warnUsage_.set(UsageWarning::VoidMold);
warnUsage_.set(UsageWarning::KnownBadImplicitInterface);
warnUsage_.set(UsageWarning::EmptyCase);
warnUsage_.set(UsageWarning::CaseOverflow);
warnUsage_.set(UsageWarning::CUDAUsage);
warnUsage_.set(UsageWarning::IgnoreTKRUsage);
warnUsage_.set(UsageWarning::ExternalInterfaceMismatch);
warnUsage_.set(UsageWarning::DefinedOperatorArgs);
warnUsage_.set(UsageWarning::Final);
warnUsage_.set(UsageWarning::ZeroDoStep);
warnUsage_.set(UsageWarning::UnusedForallIndex);
warnUsage_.set(UsageWarning::OpenMPUsage);
warnUsage_.set(UsageWarning::ModuleFile);
warnUsage_.set(UsageWarning::DataLength);
warnUsage_.set(UsageWarning::IgnoredDirective);
warnUsage_.set(UsageWarning::HomonymousSpecific);
warnUsage_.set(UsageWarning::HomonymousResult);
warnUsage_.set(UsageWarning::IgnoredIntrinsicFunctionType);
warnUsage_.set(UsageWarning::PreviousScalarUse);
warnUsage_.set(UsageWarning::RedeclaredInaccessibleComponent);
warnUsage_.set(UsageWarning::ImplicitShared);
warnUsage_.set(UsageWarning::IndexVarRedefinition);
warnUsage_.set(UsageWarning::IncompatibleImplicitInterfaces);
warnUsage_.set(UsageWarning::BadTypeForTarget);
warnUsage_.set(UsageWarning::VectorSubscriptFinalization);
warnUsage_.set(UsageWarning::UndefinedFunctionResult);
warnUsage_.set(UsageWarning::UselessIomsg);
// New warnings, on by default
warnLanguage_.set(LanguageFeature::SavedLocalInSpecExpr);
}
LanguageFeatureControl(const LanguageFeatureControl &) = default;
void Enable(LanguageFeature f, bool yes = true) { disable_.set(f, !yes); }
void EnableWarning(LanguageFeature f, bool yes = true) {
warnLanguage_.set(f, yes);
}
void EnableWarning(UsageWarning w, bool yes = true) {
warnUsage_.set(w, yes);
}
void WarnOnAllNonstandard(bool yes = true) { warnAllLanguage_ = yes; }
void WarnOnAllUsage(bool yes = true) { warnAllUsage_ = yes; }
void DisableAllNonstandardWarnings() {
warnAllLanguage_ = false;
warnLanguage_.clear();
}
void DisableAllUsageWarnings() {
warnAllUsage_ = false;
warnUsage_.clear();
}
bool IsEnabled(LanguageFeature f) const { return !disable_.test(f); }
bool ShouldWarn(LanguageFeature f) const {
return (warnAllLanguage_ && f != LanguageFeature::OpenMP &&
f != LanguageFeature::OpenACC && f != LanguageFeature::CUDA) ||
warnLanguage_.test(f);
}
bool ShouldWarn(UsageWarning w) const {
return warnAllUsage_ || warnUsage_.test(w);
}
// Return all spellings of operators names, depending on features enabled
std::vector<const char *> GetNames(LogicalOperator) const;
std::vector<const char *> GetNames(RelationalOperator) const;
private:
LanguageFeatures disable_;
LanguageFeatures warnLanguage_;
bool warnAllLanguage_{false};
UsageWarnings warnUsage_;
bool warnAllUsage_{false};
};
} // namespace Fortran::common
#endif // FORTRAN_COMMON_FORTRAN_FEATURES_H_
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