| //===-- include/flang/Common/Fortran.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_H_ |
| #define FORTRAN_COMMON_FORTRAN_H_ |
| |
| // Fortran language concepts that are used in many phases are defined |
| // once here to avoid redundancy and needless translation. |
| |
| #include "idioms.h" |
| #include <cinttypes> |
| #include <vector> |
| |
| namespace Fortran::common { |
| |
| // Fortran has five kinds of intrinsic data types, plus the derived types. |
| ENUM_CLASS(TypeCategory, Integer, Real, Complex, Character, Logical, Derived) |
| |
| constexpr bool IsNumericTypeCategory(TypeCategory category) { |
| return category == TypeCategory::Integer || category == TypeCategory::Real || |
| category == TypeCategory::Complex; |
| } |
| |
| // Kinds of IMPORT statements. Default means IMPORT or IMPORT :: names. |
| ENUM_CLASS(ImportKind, Default, Only, None, All) |
| |
| // The attribute on a type parameter can be KIND or LEN. |
| ENUM_CLASS(TypeParamAttr, Kind, Len) |
| |
| ENUM_CLASS(NumericOperator, Power, Multiply, Divide, Add, Subtract) |
| const char *AsFortran(NumericOperator); |
| |
| ENUM_CLASS(LogicalOperator, And, Or, Eqv, Neqv, Not) |
| const char *AsFortran(LogicalOperator); |
| |
| ENUM_CLASS(RelationalOperator, LT, LE, EQ, NE, GE, GT) |
| const char *AsFortran(RelationalOperator); |
| |
| ENUM_CLASS(Intent, Default, In, Out, InOut) |
| |
| ENUM_CLASS(IoStmtKind, None, Backspace, Close, Endfile, Flush, Inquire, Open, |
| Print, Read, Rewind, Wait, Write) |
| |
| // Union of specifiers for all I/O statements. |
| ENUM_CLASS(IoSpecKind, Access, Action, Advance, Asynchronous, Blank, Decimal, |
| Delim, Direct, Encoding, End, Eor, Err, Exist, File, Fmt, Form, Formatted, |
| Id, Iomsg, Iostat, Name, Named, Newunit, Nextrec, Nml, Number, Opened, Pad, |
| Pending, Pos, Position, Read, Readwrite, Rec, Recl, Round, Sequential, Sign, |
| Size, Status, Stream, Unformatted, Unit, Write, |
| Carriagecontrol, // nonstandard |
| Convert, // nonstandard |
| Dispose, // nonstandard |
| ) |
| |
| // Floating-point rounding modes; these are packed into a byte to save |
| // room in the runtime's format processing context structure. |
| enum class RoundingMode : std::uint8_t { |
| TiesToEven, // ROUND=NEAREST, RN - default IEEE rounding |
| ToZero, // ROUND=ZERO, RZ - truncation |
| Down, // ROUND=DOWN, RD |
| Up, // ROUND=UP, RU |
| TiesAwayFromZero, // ROUND=COMPATIBLE, RC - ties round away from zero |
| }; |
| |
| // Fortran label. Must be in [1..99999]. |
| using Label = std::uint64_t; |
| |
| // Fortran arrays may have up to 15 dimensions (See Fortran 2018 section 5.4.6). |
| static constexpr int maxRank{15}; |
| } // namespace Fortran::common |
| #endif // FORTRAN_COMMON_FORTRAN_H_ |