//===-- runtime/io-api.cpp ------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// Implements the I/O statement API
// template function BeginExternalListIo<> is in runtime/io-api-common.h.
// APIs BeginExternalListOutput, OutputInteger{8,16,32,64,128},
// OutputReal{32,64}, OutputComplex{32,64}, OutputAscii, & EndIoStatement()
// are in runtime/io-api-minimal.cpp.
#include "flang/Runtime/io-api.h"
#include "descriptor-io.h"
#include "edit-input.h"
#include "edit-output.h"
#include "environment.h"
#include "format.h"
#include "io-api-common.h"
#include "io-stmt.h"
#include "terminator.h"
#include "tools.h"
#include "unit.h"
#include "flang/Common/optional.h"
#include "flang/Runtime/descriptor.h"
#include "flang/Runtime/memory.h"
#include <cstdlib>
#include <memory>
namespace Fortran::runtime::io {
RT_EXT_API_GROUP_BEGIN
RT_API_ATTRS const char *InquiryKeywordHashDecode(
char *buffer, std::size_t n, InquiryKeywordHash hash) {
if (n < 1) {
return nullptr;
}
char *p{buffer + n};
*--p = '\0';
while (hash > 1) {
if (p < buffer) {
return nullptr;
}
*--p = 'A' + (hash % 26);
hash /= 26;
}
return hash == 1 ? p : nullptr;
}
template <Direction DIR>
RT_API_ATTRS Cookie BeginInternalArrayListIO(const Descriptor &descriptor,
void ** /*scratchArea*/, std::size_t /*scratchBytes*/,
const char *sourceFile, int sourceLine) {
Terminator oom{sourceFile, sourceLine};
return &New<InternalListIoStatementState<DIR>>{oom}(
descriptor, sourceFile, sourceLine)
.release()
->ioStatementState();
}
Cookie IODEF(BeginInternalArrayListOutput)(const Descriptor &descriptor,
void **scratchArea, std::size_t scratchBytes, const char *sourceFile,
int sourceLine) {
return BeginInternalArrayListIO<Direction::Output>(
descriptor, scratchArea, scratchBytes, sourceFile, sourceLine);
}
Cookie IODEF(BeginInternalArrayListInput)(const Descriptor &descriptor,
void **scratchArea, std::size_t scratchBytes, const char *sourceFile,
int sourceLine) {
return BeginInternalArrayListIO<Direction::Input>(
descriptor, scratchArea, scratchBytes, sourceFile, sourceLine);
}
template <Direction DIR>
RT_API_ATTRS Cookie BeginInternalArrayFormattedIO(const Descriptor &descriptor,
const char *format, std::size_t formatLength,
const Descriptor *formatDescriptor, void ** /*scratchArea*/,
std::size_t /*scratchBytes*/, const char *sourceFile, int sourceLine) {
Terminator oom{sourceFile, sourceLine};
return &New<InternalFormattedIoStatementState<DIR>>{oom}(descriptor, format,
formatLength, formatDescriptor, sourceFile, sourceLine)
.release()
->ioStatementState();
}
Cookie IODEF(BeginInternalArrayFormattedOutput)(const Descriptor &descriptor,
const char *format, std::size_t formatLength,
const Descriptor *formatDescriptor, void **scratchArea,
std::size_t scratchBytes, const char *sourceFile, int sourceLine) {
return BeginInternalArrayFormattedIO<Direction::Output>(descriptor, format,
formatLength, formatDescriptor, scratchArea, scratchBytes, sourceFile,
sourceLine);
}
Cookie IODEF(BeginInternalArrayFormattedInput)(const Descriptor &descriptor,
const char *format, std::size_t formatLength,
const Descriptor *formatDescriptor, void **scratchArea,
std::size_t scratchBytes, const char *sourceFile, int sourceLine) {
return BeginInternalArrayFormattedIO<Direction::Input>(descriptor, format,
formatLength, formatDescriptor, scratchArea, scratchBytes, sourceFile,
sourceLine);
}
template <Direction DIR>
RT_API_ATTRS Cookie BeginInternalListIO(
std::conditional_t<DIR == Direction::Input, const char, char> *internal,
std::size_t internalLength, void ** /*scratchArea*/,
std::size_t /*scratchBytes*/, const char *sourceFile, int sourceLine) {
Terminator oom{sourceFile, sourceLine};
return &New<InternalListIoStatementState<DIR>>{oom}(
internal, internalLength, sourceFile, sourceLine)
.release()
->ioStatementState();
}
Cookie IODEF(BeginInternalListOutput)(char *internal,
std::size_t internalLength, void **scratchArea, std::size_t scratchBytes,
const char *sourceFile, int sourceLine) {
return BeginInternalListIO<Direction::Output>(internal, internalLength,
scratchArea, scratchBytes, sourceFile, sourceLine);
}
Cookie IODEF(BeginInternalListInput)(const char *internal,
std::size_t internalLength, void **scratchArea, std::size_t scratchBytes,
const char *sourceFile, int sourceLine) {
return BeginInternalListIO<Direction::Input>(internal, internalLength,
scratchArea, scratchBytes, sourceFile, sourceLine);
}
template <Direction DIR>
RT_API_ATTRS Cookie BeginInternalFormattedIO(
std::conditional_t<DIR == Direction::Input, const char, char> *internal,
std::size_t internalLength, const char *format, std::size_t formatLength,
const Descriptor *formatDescriptor, void ** /*scratchArea*/,
std::size_t /*scratchBytes*/, const char *sourceFile, int sourceLine) {
Terminator oom{sourceFile, sourceLine};
return &New<InternalFormattedIoStatementState<DIR>>{oom}(internal,
internalLength, format, formatLength, formatDescriptor, sourceFile,
sourceLine)
.release()
->ioStatementState();
}
Cookie IODEF(BeginInternalFormattedOutput)(char *internal,
std::size_t internalLength, const char *format, std::size_t formatLength,
const Descriptor *formatDescriptor, void **scratchArea,
std::size_t scratchBytes, const char *sourceFile, int sourceLine) {
return BeginInternalFormattedIO<Direction::Output>(internal, internalLength,
format, formatLength, formatDescriptor, scratchArea, scratchBytes,
sourceFile, sourceLine);
}
Cookie IODEF(BeginInternalFormattedInput)(const char *internal,
std::size_t internalLength, const char *format, std::size_t formatLength,
const Descriptor *formatDescriptor, void **scratchArea,
std::size_t scratchBytes, const char *sourceFile, int sourceLine) {
return BeginInternalFormattedIO<Direction::Input>(internal, internalLength,
format, formatLength, formatDescriptor, scratchArea, scratchBytes,
sourceFile, sourceLine);
}
Cookie IODEF(BeginExternalListInput)(
ExternalUnit unitNumber, const char *sourceFile, int sourceLine) {
return BeginExternalListIO<Direction::Input, ExternalListIoStatementState>(
unitNumber, sourceFile, sourceLine);
}
template <Direction DIR>
RT_API_ATTRS Cookie BeginExternalFormattedIO(const char *format,
std::size_t formatLength, const Descriptor *formatDescriptor,
ExternalUnit unitNumber, const char *sourceFile, int sourceLine) {
Terminator terminator{sourceFile, sourceLine};
Cookie errorCookie{nullptr};
ExternalFileUnit *unit{GetOrCreateUnit(
unitNumber, DIR, false /*!unformatted*/, terminator, errorCookie)};
if (!unit) {
return errorCookie;
}
Iostat iostat{IostatOk};
if (!unit->isUnformatted.has_value()) {
unit->isUnformatted = false;
}
if (*unit->isUnformatted) {
iostat = IostatFormattedIoOnUnformattedUnit;
}
if (ChildIo * child{unit->GetChildIo()}) {
if (iostat == IostatOk) {
iostat = child->CheckFormattingAndDirection(false, DIR);
}
if (iostat == IostatOk) {
return &child->BeginIoStatement<ChildFormattedIoStatementState<DIR>>(
*child, format, formatLength, formatDescriptor, sourceFile,
sourceLine);
} else {
return &child->BeginIoStatement<ErroneousIoStatementState>(
iostat, nullptr /* no unit */, sourceFile, sourceLine);
}
} else {
if (iostat == IostatOk) {
iostat = unit->SetDirection(DIR);
}
if (iostat == IostatOk) {
return &unit->BeginIoStatement<ExternalFormattedIoStatementState<DIR>>(
terminator, *unit, format, formatLength, formatDescriptor, sourceFile,
sourceLine);
} else {
return &unit->BeginIoStatement<ErroneousIoStatementState>(
terminator, iostat, unit, sourceFile, sourceLine);
}
}
}
Cookie IODEF(BeginExternalFormattedOutput)(const char *format,
std::size_t formatLength, const Descriptor *formatDescriptor,
ExternalUnit unitNumber, const char *sourceFile, int sourceLine) {
return BeginExternalFormattedIO<Direction::Output>(format, formatLength,
formatDescriptor, unitNumber, sourceFile, sourceLine);
}
Cookie IODEF(BeginExternalFormattedInput)(const char *format,
std::size_t formatLength, const Descriptor *formatDescriptor,
ExternalUnit unitNumber, const char *sourceFile, int sourceLine) {
return BeginExternalFormattedIO<Direction::Input>(format, formatLength,
formatDescriptor, unitNumber, sourceFile, sourceLine);
}
template <Direction DIR>
RT_API_ATTRS Cookie BeginUnformattedIO(
ExternalUnit unitNumber, const char *sourceFile, int sourceLine) {
Terminator terminator{sourceFile, sourceLine};
Cookie errorCookie{nullptr};
ExternalFileUnit *unit{GetOrCreateUnit(
unitNumber, DIR, true /*unformatted*/, terminator, errorCookie)};
if (!unit) {
return errorCookie;
}
Iostat iostat{IostatOk};
if (!unit->isUnformatted.has_value()) {
unit->isUnformatted = true;
}
if (!*unit->isUnformatted) {
iostat = IostatUnformattedIoOnFormattedUnit;
}
if (ChildIo * child{unit->GetChildIo()}) {
if (iostat == IostatOk) {
iostat = child->CheckFormattingAndDirection(true, DIR);
}
if (iostat == IostatOk) {
return &child->BeginIoStatement<ChildUnformattedIoStatementState<DIR>>(
*child, sourceFile, sourceLine);
} else {
return &child->BeginIoStatement<ErroneousIoStatementState>(
iostat, nullptr /* no unit */, sourceFile, sourceLine);
}
} else {
if (iostat == IostatOk) {
iostat = unit->SetDirection(DIR);
}
if (iostat == IostatOk) {
IoStatementState &io{
unit->BeginIoStatement<ExternalUnformattedIoStatementState<DIR>>(
terminator, *unit, sourceFile, sourceLine)};
if constexpr (DIR == Direction::Output) {
if (unit->access == Access::Sequential) {
// Create space for (sub)record header to be completed by
// ExternalFileUnit::AdvanceRecord()
unit->recordLength.reset(); // in case of prior BACKSPACE
io.Emit("\0\0\0\0", 4); // placeholder for record length header
}
}
return &io;
} else {
return &unit->BeginIoStatement<ErroneousIoStatementState>(
terminator, iostat, unit, sourceFile, sourceLine);
}
}
}
Cookie IODEF(BeginUnformattedOutput)(
ExternalUnit unitNumber, const char *sourceFile, int sourceLine) {
return BeginUnformattedIO<Direction::Output>(
unitNumber, sourceFile, sourceLine);
}
Cookie IODEF(BeginUnformattedInput)(
ExternalUnit unitNumber, const char *sourceFile, int sourceLine) {
return BeginUnformattedIO<Direction::Input>(
unitNumber, sourceFile, sourceLine);
}
Cookie IODEF(BeginOpenUnit)( // OPEN(without NEWUNIT=)
ExternalUnit unitNumber, const char *sourceFile, int sourceLine) {
Terminator terminator{sourceFile, sourceLine};
bool wasExtant{false};
if (ExternalFileUnit *
unit{ExternalFileUnit::LookUpOrCreate(
unitNumber, terminator, wasExtant)}) {
if (ChildIo * child{unit->GetChildIo()}) {
return &child->BeginIoStatement<ErroneousIoStatementState>(
IostatBadOpOnChildUnit, nullptr /* no unit */, sourceFile,
sourceLine);
} else {
return &unit->BeginIoStatement<OpenStatementState>(terminator, *unit,
wasExtant, false /*not NEWUNIT=*/, sourceFile, sourceLine);
}
} else {
return NoopUnit(terminator, unitNumber, IostatBadUnitNumber);
}
}
Cookie IODEF(BeginOpenNewUnit)( // OPEN(NEWUNIT=j)
const char *sourceFile, int sourceLine) {
Terminator terminator{sourceFile, sourceLine};
ExternalFileUnit &unit{
ExternalFileUnit::NewUnit(terminator, false /*not child I/O*/)};
return &unit.BeginIoStatement<OpenStatementState>(terminator, unit,
false /*was an existing file*/, true /*NEWUNIT=*/, sourceFile,
sourceLine);
}
Cookie IODEF(BeginWait)(ExternalUnit unitNumber, AsynchronousId id,
const char *sourceFile, int sourceLine) {
Terminator terminator{sourceFile, sourceLine};
if (ExternalFileUnit * unit{ExternalFileUnit::LookUp(unitNumber)}) {
if (unit->Wait(id)) {
return &unit->BeginIoStatement<ExternalMiscIoStatementState>(terminator,
*unit, ExternalMiscIoStatementState::Wait, sourceFile, sourceLine);
} else {
return &unit->BeginIoStatement<ErroneousIoStatementState>(
terminator, IostatBadWaitId, unit, sourceFile, sourceLine);
}
} else {
return NoopUnit(
terminator, unitNumber, id == 0 ? IostatOk : IostatBadWaitUnit);
}
}
Cookie IODEF(BeginWaitAll)(
ExternalUnit unitNumber, const char *sourceFile, int sourceLine) {
return IONAME(BeginWait)(unitNumber, 0 /*no ID=*/, sourceFile, sourceLine);
}
Cookie IODEF(BeginClose)(
ExternalUnit unitNumber, const char *sourceFile, int sourceLine) {
Terminator terminator{sourceFile, sourceLine};
if (ExternalFileUnit * unit{ExternalFileUnit::LookUp(unitNumber)}) {
if (ChildIo * child{unit->GetChildIo()}) {
return &child->BeginIoStatement<ErroneousIoStatementState>(
IostatBadOpOnChildUnit, nullptr /* no unit */, sourceFile,
sourceLine);
}
}
if (ExternalFileUnit * unit{ExternalFileUnit::LookUpForClose(unitNumber)}) {
return &unit->BeginIoStatement<CloseStatementState>(
terminator, *unit, sourceFile, sourceLine);
} else {
// CLOSE(UNIT=bad unit) is just a no-op
return NoopUnit(terminator, unitNumber);
}
}
Cookie IODEF(BeginFlush)(
ExternalUnit unitNumber, const char *sourceFile, int sourceLine) {
Terminator terminator{sourceFile, sourceLine};
if (ExternalFileUnit * unit{ExternalFileUnit::LookUp(unitNumber)}) {
if (ChildIo * child{unit->GetChildIo()}) {
return &child->BeginIoStatement<ExternalMiscIoStatementState>(
*unit, ExternalMiscIoStatementState::Flush, sourceFile, sourceLine);
} else {
return &unit->BeginIoStatement<ExternalMiscIoStatementState>(terminator,
*unit, ExternalMiscIoStatementState::Flush, sourceFile, sourceLine);
}
} else {
// FLUSH(UNIT=bad unit) is an error; an unconnected unit is a no-op
return NoopUnit(terminator, unitNumber,
unitNumber >= 0 ? IostatOk : IostatBadFlushUnit);
}
}
Cookie IODEF(BeginBackspace)(
ExternalUnit unitNumber, const char *sourceFile, int sourceLine) {
Terminator terminator{sourceFile, sourceLine};
if (ExternalFileUnit * unit{ExternalFileUnit::LookUp(unitNumber)}) {
if (ChildIo * child{unit->GetChildIo()}) {
return &child->BeginIoStatement<ErroneousIoStatementState>(
IostatBadOpOnChildUnit, nullptr /* no unit */, sourceFile,
sourceLine);
} else {
return &unit->BeginIoStatement<ExternalMiscIoStatementState>(terminator,
*unit, ExternalMiscIoStatementState::Backspace, sourceFile,
sourceLine);
}
} else {
return NoopUnit(terminator, unitNumber, IostatBadBackspaceUnit);
}
}
Cookie IODEF(BeginEndfile)(
ExternalUnit unitNumber, const char *sourceFile, int sourceLine) {
Terminator terminator{sourceFile, sourceLine};
Cookie errorCookie{nullptr};
if (ExternalFileUnit *
unit{GetOrCreateUnit(unitNumber, Direction::Output,
Fortran::common::nullopt, terminator, errorCookie)}) {
if (ChildIo * child{unit->GetChildIo()}) {
return &child->BeginIoStatement<ErroneousIoStatementState>(
IostatBadOpOnChildUnit, nullptr /* no unit */, sourceFile,
sourceLine);
} else {
return &unit->BeginIoStatement<ExternalMiscIoStatementState>(terminator,
*unit, ExternalMiscIoStatementState::Endfile, sourceFile, sourceLine);
}
} else {
return errorCookie;
}
}
Cookie IODEF(BeginRewind)(
ExternalUnit unitNumber, const char *sourceFile, int sourceLine) {
Terminator terminator{sourceFile, sourceLine};
Cookie errorCookie{nullptr};
if (ExternalFileUnit *
unit{GetOrCreateUnit(unitNumber, Direction::Input,
Fortran::common::nullopt, terminator, errorCookie)}) {
if (ChildIo * child{unit->GetChildIo()}) {
return &child->BeginIoStatement<ErroneousIoStatementState>(
IostatBadOpOnChildUnit, nullptr /* no unit */, sourceFile,
sourceLine);
} else {
return &unit->BeginIoStatement<ExternalMiscIoStatementState>(terminator,
*unit, ExternalMiscIoStatementState::Rewind, sourceFile, sourceLine);
}
} else {
return errorCookie;
}
}
Cookie IODEF(BeginInquireUnit)(
ExternalUnit unitNumber, const char *sourceFile, int sourceLine) {
Terminator terminator{sourceFile, sourceLine};
if (ExternalFileUnit * unit{ExternalFileUnit::LookUp(unitNumber)}) {
if (ChildIo * child{unit->GetChildIo()}) {
return &child->BeginIoStatement<InquireUnitState>(
*unit, sourceFile, sourceLine);
} else {
return &unit->BeginIoStatement<InquireUnitState>(
terminator, *unit, sourceFile, sourceLine);
}
} else {
// INQUIRE(UNIT=unrecognized unit)
return &New<InquireNoUnitState>{terminator}(
sourceFile, sourceLine, unitNumber)
.release()
->ioStatementState();
}
}
Cookie IODEF(BeginInquireFile)(const char *path, std::size_t pathLength,
const char *sourceFile, int sourceLine) {
Terminator terminator{sourceFile, sourceLine};
auto trimmed{SaveDefaultCharacter(
path, TrimTrailingSpaces(path, pathLength), terminator)};
if (ExternalFileUnit *
unit{ExternalFileUnit::LookUp(
trimmed.get(), Fortran::runtime::strlen(trimmed.get()))}) {
// INQUIRE(FILE=) to a connected unit
if (ChildIo * child{unit->GetChildIo()}) {
return &child->BeginIoStatement<InquireUnitState>(
*unit, sourceFile, sourceLine);
} else {
return &unit->BeginIoStatement<InquireUnitState>(
terminator, *unit, sourceFile, sourceLine);
}
} else {
return &New<InquireUnconnectedFileState>{terminator}(
std::move(trimmed), sourceFile, sourceLine)
.release()
->ioStatementState();
}
}
Cookie IODEF(BeginInquireIoLength)(const char *sourceFile, int sourceLine) {
Terminator oom{sourceFile, sourceLine};
return &New<InquireIOLengthState>{oom}(sourceFile, sourceLine)
.release()
->ioStatementState();
}
// Control list items
void IODEF(EnableHandlers)(Cookie cookie, bool hasIoStat, bool hasErr,
bool hasEnd, bool hasEor, bool hasIoMsg) {
IoErrorHandler &handler{cookie->GetIoErrorHandler()};
if (hasIoStat) {
handler.HasIoStat();
}
if (hasErr) {
handler.HasErrLabel();
}
if (hasEnd) {
handler.HasEndLabel();
}
if (hasEor) {
handler.HasEorLabel();
}
if (hasIoMsg) {
handler.HasIoMsg();
}
}
static RT_API_ATTRS bool YesOrNo(const char *keyword, std::size_t length,
const char *what, IoErrorHandler &handler) {
static const char *keywords[]{"YES", "NO", nullptr};
switch (IdentifyValue(keyword, length, keywords)) {
case 0:
return true;
case 1:
return false;
default:
handler.SignalError(IostatErrorInKeyword, "Invalid %s='%.*s'", what,
static_cast<int>(length), keyword);
return false;
}
}
bool IODEF(SetAdvance)(Cookie cookie, const char *keyword, std::size_t length) {
IoStatementState &io{*cookie};
IoErrorHandler &handler{io.GetIoErrorHandler()};
bool nonAdvancing{!YesOrNo(keyword, length, "ADVANCE", handler)};
if (nonAdvancing && io.GetConnectionState().access == Access::Direct) {
handler.SignalError("Non-advancing I/O attempted on direct access file");
} else {
auto *unit{io.GetExternalFileUnit()};
if (unit && unit->GetChildIo()) {
// ADVANCE= is ignored for child I/O (12.6.4.8.3 p3)
} else {
io.mutableModes().nonAdvancing = nonAdvancing;
}
}
return !handler.InError();
}
bool IODEF(SetBlank)(Cookie cookie, const char *keyword, std::size_t length) {
IoStatementState &io{*cookie};
static const char *keywords[]{"NULL", "ZERO", nullptr};
switch (IdentifyValue(keyword, length, keywords)) {
case 0:
io.mutableModes().editingFlags &= ~blankZero;
return true;
case 1:
io.mutableModes().editingFlags |= blankZero;
return true;
default:
io.GetIoErrorHandler().SignalError(IostatErrorInKeyword,
"Invalid BLANK='%.*s'", static_cast<int>(length), keyword);
return false;
}
}
bool IODEF(SetDecimal)(Cookie cookie, const char *keyword, std::size_t length) {
IoStatementState &io{*cookie};
static const char *keywords[]{"COMMA", "POINT", nullptr};
switch (IdentifyValue(keyword, length, keywords)) {
case 0:
io.mutableModes().editingFlags |= decimalComma;
return true;
case 1:
io.mutableModes().editingFlags &= ~decimalComma;
return true;
default:
io.GetIoErrorHandler().SignalError(IostatErrorInKeyword,
"Invalid DECIMAL='%.*s'", static_cast<int>(length), keyword);
return false;
}
}
bool IODEF(SetDelim)(Cookie cookie, const char *keyword, std::size_t length) {
IoStatementState &io{*cookie};
static const char *keywords[]{"APOSTROPHE", "QUOTE", "NONE", nullptr};
switch (IdentifyValue(keyword, length, keywords)) {
case 0:
io.mutableModes().delim = '\'';
return true;
case 1:
io.mutableModes().delim = '"';
return true;
case 2:
io.mutableModes().delim = '\0';
return true;
default:
io.GetIoErrorHandler().SignalError(IostatErrorInKeyword,
"Invalid DELIM='%.*s'", static_cast<int>(length), keyword);
return false;
}
}
bool IODEF(SetPad)(Cookie cookie, const char *keyword, std::size_t length) {
IoStatementState &io{*cookie};
IoErrorHandler &handler{io.GetIoErrorHandler()};
io.mutableModes().pad = YesOrNo(keyword, length, "PAD", handler);
return !handler.InError();
}
bool IODEF(SetPos)(Cookie cookie, std::int64_t pos) {
IoStatementState &io{*cookie};
IoErrorHandler &handler{io.GetIoErrorHandler()};
if (auto *unit{io.GetExternalFileUnit()}) {
return unit->SetStreamPos(pos, handler);
} else if (!io.get_if<ErroneousIoStatementState>()) {
handler.Crash("SetPos() called on internal unit");
}
return false;
}
bool IODEF(SetRec)(Cookie cookie, std::int64_t rec) {
IoStatementState &io{*cookie};
IoErrorHandler &handler{io.GetIoErrorHandler()};
if (auto *unit{io.GetExternalFileUnit()}) {
if (unit->GetChildIo()) {
handler.SignalError(
IostatBadOpOnChildUnit, "REC= specifier on child I/O");
} else {
unit->SetDirectRec(rec, handler);
}
} else if (!io.get_if<ErroneousIoStatementState>()) {
handler.Crash("SetRec() called on internal unit");
}
return true;
}
bool IODEF(SetRound)(Cookie cookie, const char *keyword, std::size_t length) {
IoStatementState &io{*cookie};
static const char *keywords[]{"UP", "DOWN", "ZERO", "NEAREST", "COMPATIBLE",
"PROCESSOR_DEFINED", nullptr};
switch (IdentifyValue(keyword, length, keywords)) {
case 0:
io.mutableModes().round = decimal::RoundUp;
return true;
case 1:
io.mutableModes().round = decimal::RoundDown;
return true;
case 2:
io.mutableModes().round = decimal::RoundToZero;
return true;
case 3:
io.mutableModes().round = decimal::RoundNearest;
return true;
case 4:
io.mutableModes().round = decimal::RoundCompatible;
return true;
case 5:
io.mutableModes().round = executionEnvironment.defaultOutputRoundingMode;
return true;
default:
io.GetIoErrorHandler().SignalError(IostatErrorInKeyword,
"Invalid ROUND='%.*s'", static_cast<int>(length), keyword);
return false;
}
}
bool IODEF(SetSign)(Cookie cookie, const char *keyword, std::size_t length) {
IoStatementState &io{*cookie};
static const char *keywords[]{
"PLUS", "SUPPRESS", "PROCESSOR_DEFINED", nullptr};
switch (IdentifyValue(keyword, length, keywords)) {
case 0:
io.mutableModes().editingFlags |= signPlus;
return true;
case 1:
case 2: // processor default is SS
io.mutableModes().editingFlags &= ~signPlus;
return true;
default:
io.GetIoErrorHandler().SignalError(IostatErrorInKeyword,
"Invalid SIGN='%.*s'", static_cast<int>(length), keyword);
return false;
}
}
bool IODEF(SetAccess)(Cookie cookie, const char *keyword, std::size_t length) {
IoStatementState &io{*cookie};
auto *open{io.get_if<OpenStatementState>()};
if (!open) {
if (!io.get_if<NoopStatementState>() &&
!io.get_if<ErroneousIoStatementState>()) {
io.GetIoErrorHandler().Crash(
"SetAccess() called when not in an OPEN statement");
}
return false;
} else if (open->completedOperation()) {
io.GetIoErrorHandler().Crash(
"SetAccess() called after GetNewUnit() for an OPEN statement");
}
static const char *keywords[]{
"SEQUENTIAL", "DIRECT", "STREAM", "APPEND", nullptr};
switch (IdentifyValue(keyword, length, keywords)) {
case 0:
open->set_access(Access::Sequential);
break;
case 1:
open->set_access(Access::Direct);
break;
case 2:
open->set_access(Access::Stream);
break;
case 3: // Sun Fortran extension ACCESS=APPEND: treat as if POSITION=APPEND
open->set_position(Position::Append);
break;
default:
open->SignalError(IostatErrorInKeyword, "Invalid ACCESS='%.*s'",
static_cast<int>(length), keyword);
}
return true;
}
bool IODEF(SetAction)(Cookie cookie, const char *keyword, std::size_t length) {
IoStatementState &io{*cookie};
auto *open{io.get_if<OpenStatementState>()};
if (!open) {
if (!io.get_if<NoopStatementState>() &&
!io.get_if<ErroneousIoStatementState>()) {
io.GetIoErrorHandler().Crash(
"SetAction() called when not in an OPEN statement");
}
return false;
} else if (open->completedOperation()) {
io.GetIoErrorHandler().Crash(
"SetAction() called after GetNewUnit() for an OPEN statement");
}
Fortran::common::optional<Action> action;
static const char *keywords[]{"READ", "WRITE", "READWRITE", nullptr};
switch (IdentifyValue(keyword, length, keywords)) {
case 0:
action = Action::Read;
break;
case 1:
action = Action::Write;
break;
case 2:
action = Action::ReadWrite;
break;
default:
open->SignalError(IostatErrorInKeyword, "Invalid ACTION='%.*s'",
static_cast<int>(length), keyword);
return false;
}
RUNTIME_CHECK(io.GetIoErrorHandler(), action.has_value());
if (open->wasExtant()) {
if ((*action != Action::Write) != open->unit().mayRead() ||
(*action != Action::Read) != open->unit().mayWrite()) {
open->SignalError("ACTION= may not be changed on an open unit");
}
}
open->set_action(*action);
return true;
}
bool IODEF(SetAsynchronous)(
Cookie cookie, const char *keyword, std::size_t length) {
IoStatementState &io{*cookie};
IoErrorHandler &handler{io.GetIoErrorHandler()};
bool isYes{YesOrNo(keyword, length, "ASYNCHRONOUS", handler)};
if (auto *open{io.get_if<OpenStatementState>()}) {
if (open->completedOperation()) {
handler.Crash(
"SetAsynchronous() called after GetNewUnit() for an OPEN statement");
}
open->unit().set_mayAsynchronous(isYes);
} else if (auto *ext{io.get_if<ExternalIoStatementBase>()}) {
if (isYes) {
if (ext->unit().mayAsynchronous()) {
ext->SetAsynchronous();
} else {
handler.SignalError(IostatBadAsynchronous);
}
}
} else if (!io.get_if<NoopStatementState>() &&
!io.get_if<ErroneousIoStatementState>()) {
handler.Crash("SetAsynchronous() called when not in an OPEN or external "
"I/O statement");
}
return !handler.InError();
}
bool IODEF(SetCarriagecontrol)(
Cookie cookie, const char *keyword, std::size_t length) {
IoStatementState &io{*cookie};
auto *open{io.get_if<OpenStatementState>()};
if (!open) {
if (!io.get_if<NoopStatementState>() &&
!io.get_if<ErroneousIoStatementState>()) {
io.GetIoErrorHandler().Crash(
"SetCarriageControl() called when not in an OPEN statement");
}
return false;
} else if (open->completedOperation()) {
io.GetIoErrorHandler().Crash(
"SetCarriageControl() called after GetNewUnit() for an OPEN statement");
}
static const char *keywords[]{"LIST", "FORTRAN", "NONE", nullptr};
switch (IdentifyValue(keyword, length, keywords)) {
case 0:
return true;
case 1:
case 2:
open->SignalError(IostatErrorInKeyword,
"Unimplemented CARRIAGECONTROL='%.*s'", static_cast<int>(length),
keyword);
return false;
default:
open->SignalError(IostatErrorInKeyword, "Invalid CARRIAGECONTROL='%.*s'",
static_cast<int>(length), keyword);
return false;
}
}
bool IODEF(SetConvert)(Cookie cookie, const char *keyword, std::size_t length) {
IoStatementState &io{*cookie};
auto *open{io.get_if<OpenStatementState>()};
if (!open) {
if (!io.get_if<NoopStatementState>() &&
!io.get_if<ErroneousIoStatementState>()) {
io.GetIoErrorHandler().Crash(
"SetConvert() called when not in an OPEN statement");
}
return false;
} else if (open->completedOperation()) {
io.GetIoErrorHandler().Crash(
"SetConvert() called after GetNewUnit() for an OPEN statement");
}
if (auto convert{GetConvertFromString(keyword, length)}) {
open->set_convert(*convert);
return true;
} else {
open->SignalError(IostatErrorInKeyword, "Invalid CONVERT='%.*s'",
static_cast<int>(length), keyword);
return false;
}
}
bool IODEF(SetEncoding)(
Cookie cookie, const char *keyword, std::size_t length) {
IoStatementState &io{*cookie};
auto *open{io.get_if<OpenStatementState>()};
if (!open) {
if (!io.get_if<NoopStatementState>() &&
!io.get_if<ErroneousIoStatementState>()) {
io.GetIoErrorHandler().Crash(
"SetEncoding() called when not in an OPEN statement");
}
return false;
} else if (open->completedOperation()) {
io.GetIoErrorHandler().Crash(
"SetEncoding() called after GetNewUnit() for an OPEN statement");
}
// Allow the encoding to be changed on an open unit -- it's
// useful and safe.
static const char *keywords[]{"UTF-8", "DEFAULT", nullptr};
switch (IdentifyValue(keyword, length, keywords)) {
case 0:
open->unit().isUTF8 = true;
break;
case 1:
open->unit().isUTF8 = false;
break;
default:
open->SignalError(IostatErrorInKeyword, "Invalid ENCODING='%.*s'",
static_cast<int>(length), keyword);
}
return true;
}
bool IODEF(SetForm)(Cookie cookie, const char *keyword, std::size_t length) {
IoStatementState &io{*cookie};
auto *open{io.get_if<OpenStatementState>()};
if (!open) {
if (!io.get_if<NoopStatementState>() &&
!io.get_if<ErroneousIoStatementState>()) {
io.GetIoErrorHandler().Crash(
"SetForm() called when not in an OPEN statement");
}
} else if (open->completedOperation()) {
io.GetIoErrorHandler().Crash(
"SetForm() called after GetNewUnit() for an OPEN statement");
}
static const char *keywords[]{"FORMATTED", "UNFORMATTED", nullptr};
switch (IdentifyValue(keyword, length, keywords)) {
case 0:
open->set_isUnformatted(false);
break;
case 1:
open->set_isUnformatted(true);
break;
default:
open->SignalError(IostatErrorInKeyword, "Invalid FORM='%.*s'",
static_cast<int>(length), keyword);
}
return true;
}
bool IODEF(SetPosition)(
Cookie cookie, const char *keyword, std::size_t length) {
IoStatementState &io{*cookie};
auto *open{io.get_if<OpenStatementState>()};
if (!open) {
if (!io.get_if<NoopStatementState>() &&
!io.get_if<ErroneousIoStatementState>()) {
io.GetIoErrorHandler().Crash(
"SetPosition() called when not in an OPEN statement");
}
return false;
} else if (open->completedOperation()) {
io.GetIoErrorHandler().Crash(
"SetPosition() called after GetNewUnit() for an OPEN statement");
}
static const char *positions[]{"ASIS", "REWIND", "APPEND", nullptr};
switch (IdentifyValue(keyword, length, positions)) {
case 0:
open->set_position(Position::AsIs);
return true;
case 1:
open->set_position(Position::Rewind);
return true;
case 2:
open->set_position(Position::Append);
return true;
default:
io.GetIoErrorHandler().SignalError(IostatErrorInKeyword,
"Invalid POSITION='%.*s'", static_cast<int>(length), keyword);
}
return true;
}
bool IODEF(SetRecl)(Cookie cookie, std::size_t n) {
IoStatementState &io{*cookie};
auto *open{io.get_if<OpenStatementState>()};
if (!open) {
if (!io.get_if<NoopStatementState>() &&
!io.get_if<ErroneousIoStatementState>()) {
io.GetIoErrorHandler().Crash(
"SetRecl() called when not in an OPEN statement");
}
return false;
} else if (open->completedOperation()) {
io.GetIoErrorHandler().Crash(
"SetRecl() called after GetNewUnit() for an OPEN statement");
}
if (static_cast<std::int64_t>(n) <= 0) {
io.GetIoErrorHandler().SignalError("RECL= must be greater than zero");
return false;
} else if (open->wasExtant() &&
open->unit().openRecl.value_or(0) != static_cast<std::int64_t>(n)) {
open->SignalError("RECL= may not be changed for an open unit");
return false;
} else {
open->unit().openRecl = n;
return true;
}
}
bool IODEF(SetStatus)(Cookie cookie, const char *keyword, std::size_t length) {
IoStatementState &io{*cookie};
if (auto *open{io.get_if<OpenStatementState>()}) {
if (open->completedOperation()) {
io.GetIoErrorHandler().Crash(
"SetStatus() called after GetNewUnit() for an OPEN statement");
}
static const char *statuses[]{
"OLD", "NEW", "SCRATCH", "REPLACE", "UNKNOWN", nullptr};
switch (IdentifyValue(keyword, length, statuses)) {
case 0:
open->set_status(OpenStatus::Old);
return true;
case 1:
open->set_status(OpenStatus::New);
return true;
case 2:
open->set_status(OpenStatus::Scratch);
return true;
case 3:
open->set_status(OpenStatus::Replace);
return true;
case 4:
open->set_status(OpenStatus::Unknown);
return true;
default:
io.GetIoErrorHandler().SignalError(IostatErrorInKeyword,
"Invalid STATUS='%.*s'", static_cast<int>(length), keyword);
}
return false;
}
if (auto *close{io.get_if<CloseStatementState>()}) {
static const char *statuses[]{"KEEP", "DELETE", nullptr};
switch (IdentifyValue(keyword, length, statuses)) {
case 0:
close->set_status(CloseStatus::Keep);
return true;
case 1:
close->set_status(CloseStatus::Delete);
return true;
default:
io.GetIoErrorHandler().SignalError(IostatErrorInKeyword,
"Invalid STATUS='%.*s'", static_cast<int>(length), keyword);
}
return false;
}
if (io.get_if<NoopStatementState>() ||
io.get_if<ErroneousIoStatementState>()) {
return true; // don't bother validating STATUS= in a no-op CLOSE
}
io.GetIoErrorHandler().Crash(
"SetStatus() called when not in an OPEN or CLOSE statement");
}
bool IODEF(SetFile)(Cookie cookie, const char *path, std::size_t chars) {
IoStatementState &io{*cookie};
if (auto *open{io.get_if<OpenStatementState>()}) {
if (open->completedOperation()) {
io.GetIoErrorHandler().Crash(
"SetFile() called after GetNewUnit() for an OPEN statement");
}
open->set_path(path, chars);
return true;
} else if (!io.get_if<NoopStatementState>() &&
!io.get_if<ErroneousIoStatementState>()) {
io.GetIoErrorHandler().Crash(
"SetFile() called when not in an OPEN statement");
}
return false;
}
bool IODEF(GetNewUnit)(Cookie cookie, int &unit, int kind) {
IoStatementState &io{*cookie};
auto *open{io.get_if<OpenStatementState>()};
if (!open) {
if (!io.get_if<NoopStatementState>() &&
!io.get_if<ErroneousIoStatementState>()) {
io.GetIoErrorHandler().Crash(
"GetNewUnit() called when not in an OPEN statement");
}
return false;
} else if (!open->InError()) {
open->CompleteOperation();
}
if (open->InError()) {
// A failed OPEN(NEWUNIT=n) does not modify 'n'
return false;
}
std::int64_t result{open->unit().unitNumber()};
if (!SetInteger(unit, kind, result)) {
open->SignalError("GetNewUnit(): bad INTEGER kind(%d) or out-of-range "
"value(%jd) for result",
kind, static_cast<std::intmax_t>(result));
}
return true;
}
// Data transfers
bool IODEF(OutputDescriptor)(Cookie cookie, const Descriptor &descriptor) {
return descr::DescriptorIO<Direction::Output>(*cookie, descriptor);
}
bool IODEF(InputDescriptor)(Cookie cookie, const Descriptor &descriptor) {
return descr::DescriptorIO<Direction::Input>(*cookie, descriptor);
}
bool IODEF(InputInteger)(Cookie cookie, std::int64_t &n, int kind) {
if (!cookie->CheckFormattedStmtType<Direction::Input>("InputInteger")) {
return false;
}
StaticDescriptor<0> staticDescriptor;
Descriptor &descriptor{staticDescriptor.descriptor()};
descriptor.Establish(
TypeCategory::Integer, kind, reinterpret_cast<void *>(&n), 0);
return descr::DescriptorIO<Direction::Input>(*cookie, descriptor);
}
bool IODEF(InputReal32)(Cookie cookie, float &x) {
if (!cookie->CheckFormattedStmtType<Direction::Input>("InputReal32")) {
return false;
}
StaticDescriptor<0> staticDescriptor;
Descriptor &descriptor{staticDescriptor.descriptor()};
descriptor.Establish(TypeCategory::Real, 4, reinterpret_cast<void *>(&x), 0);
return descr::DescriptorIO<Direction::Input>(*cookie, descriptor);
}
bool IODEF(InputReal64)(Cookie cookie, double &x) {
if (!cookie->CheckFormattedStmtType<Direction::Input>("InputReal64")) {
return false;
}
StaticDescriptor<0> staticDescriptor;
Descriptor &descriptor{staticDescriptor.descriptor()};
descriptor.Establish(TypeCategory::Real, 8, reinterpret_cast<void *>(&x), 0);
return descr::DescriptorIO<Direction::Input>(*cookie, descriptor);
}
bool IODEF(InputComplex32)(Cookie cookie, float z[2]) {
if (!cookie->CheckFormattedStmtType<Direction::Input>("InputComplex32")) {
return false;
}
StaticDescriptor<0> staticDescriptor;
Descriptor &descriptor{staticDescriptor.descriptor()};
descriptor.Establish(
TypeCategory::Complex, 4, reinterpret_cast<void *>(z), 0);
return descr::DescriptorIO<Direction::Input>(*cookie, descriptor);
}
bool IODEF(InputComplex64)(Cookie cookie, double z[2]) {
if (!cookie->CheckFormattedStmtType<Direction::Input>("InputComplex64")) {
return false;
}
StaticDescriptor<0> staticDescriptor;
Descriptor &descriptor{staticDescriptor.descriptor()};
descriptor.Establish(
TypeCategory::Complex, 8, reinterpret_cast<void *>(z), 0);
return descr::DescriptorIO<Direction::Input>(*cookie, descriptor);
}
bool IODEF(OutputCharacter)(
Cookie cookie, const char *x, std::size_t length, int kind) {
if (!cookie->CheckFormattedStmtType<Direction::Output>("OutputCharacter")) {
return false;
}
StaticDescriptor<0> staticDescriptor;
Descriptor &descriptor{staticDescriptor.descriptor()};
descriptor.Establish(
kind, length, reinterpret_cast<void *>(const_cast<char *>(x)), 0);
return descr::DescriptorIO<Direction::Output>(*cookie, descriptor);
}
bool IODEF(InputCharacter)(
Cookie cookie, char *x, std::size_t length, int kind) {
if (!cookie->CheckFormattedStmtType<Direction::Input>("InputCharacter")) {
return false;
}
StaticDescriptor<0> staticDescriptor;
Descriptor &descriptor{staticDescriptor.descriptor()};
descriptor.Establish(kind, length, reinterpret_cast<void *>(x), 0);
return descr::DescriptorIO<Direction::Input>(*cookie, descriptor);
}
bool IODEF(InputAscii)(Cookie cookie, char *x, std::size_t length) {
return IONAME(InputCharacter)(cookie, x, length, 1);
}
bool IODEF(InputLogical)(Cookie cookie, bool &truth) {
if (!cookie->CheckFormattedStmtType<Direction::Input>("InputLogical")) {
return false;
}
StaticDescriptor<0> staticDescriptor;
Descriptor &descriptor{staticDescriptor.descriptor()};
descriptor.Establish(
TypeCategory::Logical, sizeof truth, reinterpret_cast<void *>(&truth), 0);
return descr::DescriptorIO<Direction::Input>(*cookie, descriptor);
}
bool IODEF(OutputDerivedType)(Cookie cookie, const Descriptor &descriptor,
const NonTbpDefinedIoTable *table) {
return descr::DescriptorIO<Direction::Output>(*cookie, descriptor, table);
}
bool IODEF(InputDerivedType)(Cookie cookie, const Descriptor &descriptor,
const NonTbpDefinedIoTable *table) {
return descr::DescriptorIO<Direction::Input>(*cookie, descriptor, table);
}
std::size_t IODEF(GetSize)(Cookie cookie) {
IoStatementState &io{*cookie};
IoErrorHandler &handler{io.GetIoErrorHandler()};
if (!handler.InError()) {
io.CompleteOperation();
}
if (const auto *formatted{
io.get_if<FormattedIoStatementState<Direction::Input>>()}) {
return formatted->GetEditDescriptorChars();
} else if (!io.get_if<NoopStatementState>() &&
!io.get_if<ErroneousIoStatementState>()) {
handler.Crash("GetIoSize() called for an I/O statement that is not a "
"formatted READ()");
}
return 0;
}
std::size_t IODEF(GetIoLength)(Cookie cookie) {
IoStatementState &io{*cookie};
IoErrorHandler &handler{io.GetIoErrorHandler()};
if (!handler.InError()) {
io.CompleteOperation();
}
if (const auto *inq{io.get_if<InquireIOLengthState>()}) {
return inq->bytes();
} else if (!io.get_if<NoopStatementState>() &&
!io.get_if<ErroneousIoStatementState>()) {
handler.Crash("GetIoLength() called for an I/O statement that is not "
"INQUIRE(IOLENGTH=)");
}
return 0;
}
void IODEF(GetIoMsg)(Cookie cookie, char *msg, std::size_t length) {
IoStatementState &io{*cookie};
IoErrorHandler &handler{io.GetIoErrorHandler()};
if (!handler.InError()) {
io.CompleteOperation();
}
if (handler.InError()) { // leave "msg" alone when no error
handler.GetIoMsg(msg, length);
}
}
AsynchronousId IODEF(GetAsynchronousId)(Cookie cookie) {
IoStatementState &io{*cookie};
IoErrorHandler &handler{io.GetIoErrorHandler()};
if (auto *ext{io.get_if<ExternalIoStatementBase>()}) {
return ext->asynchronousID();
} else if (!io.get_if<NoopStatementState>() &&
!io.get_if<ErroneousIoStatementState>()) {
handler.Crash(
"GetAsynchronousId() called when not in an external I/O statement");
}
return 0;
}
bool IODEF(InquireCharacter)(Cookie cookie, InquiryKeywordHash inquiry,
char *result, std::size_t length) {
IoStatementState &io{*cookie};
return io.Inquire(inquiry, result, length);
}
bool IODEF(InquireLogical)(
Cookie cookie, InquiryKeywordHash inquiry, bool &result) {
IoStatementState &io{*cookie};
return io.Inquire(inquiry, result);
}
bool IODEF(InquirePendingId)(Cookie cookie, AsynchronousId id, bool &result) {
IoStatementState &io{*cookie};
return io.Inquire(HashInquiryKeyword("PENDING"), id, result);
}
bool IODEF(InquireInteger64)(
Cookie cookie, InquiryKeywordHash inquiry, std::int64_t &result, int kind) {
IoStatementState &io{*cookie};
std::int64_t n{0}; // safe "undefined" value
if (io.Inquire(inquiry, n)) {
if (SetInteger(result, kind, n)) {
return true;
}
io.GetIoErrorHandler().SignalError(
"InquireInteger64(): bad INTEGER kind(%d) or out-of-range "
"value(%jd) for result",
kind, static_cast<std::intmax_t>(n));
}
return false;
}
template <typename INT>
static RT_API_ATTRS enum Iostat CheckUnitNumberInRangeImpl(INT unit,
bool handleError, char *ioMsg, std::size_t ioMsgLength,
const char *sourceFile, int sourceLine) {
static_assert(sizeof(INT) >= sizeof(ExternalUnit),
"only intended to be used when the INT to ExternalUnit conversion is "
"narrowing");
if (unit != static_cast<ExternalUnit>(unit)) {
Terminator oom{sourceFile, sourceLine};
IoErrorHandler errorHandler{oom};
if (handleError) {
errorHandler.HasIoStat();
if (ioMsg) {
errorHandler.HasIoMsg();
}
}
// Only provide the bad unit number in the message if SignalError can print
// it accurately. Otherwise, the generic IostatUnitOverflow message will be
// used.
if constexpr (sizeof(INT) > sizeof(std::intmax_t)) {
errorHandler.SignalError(IostatUnitOverflow);
} else if (static_cast<std::intmax_t>(unit) == unit) {
errorHandler.SignalError(IostatUnitOverflow,
"UNIT number %jd is out of range", static_cast<std::intmax_t>(unit));
} else {
errorHandler.SignalError(IostatUnitOverflow);
}
if (ioMsg) {
errorHandler.GetIoMsg(ioMsg, ioMsgLength);
}
return static_cast<enum Iostat>(errorHandler.GetIoStat());
}
return IostatOk;
}
enum Iostat IODEF(CheckUnitNumberInRange64)(std::int64_t unit, bool handleError,
char *ioMsg, std::size_t ioMsgLength, const char *sourceFile,
int sourceLine) {
return CheckUnitNumberInRangeImpl(
unit, handleError, ioMsg, ioMsgLength, sourceFile, sourceLine);
}
#ifdef __SIZEOF_INT128__
enum Iostat IODEF(CheckUnitNumberInRange128)(common::int128_t unit,
bool handleError, char *ioMsg, std::size_t ioMsgLength,
const char *sourceFile, int sourceLine) {
return CheckUnitNumberInRangeImpl(
unit, handleError, ioMsg, ioMsgLength, sourceFile, sourceLine);
}
#endif
RT_EXT_API_GROUP_END
} // namespace Fortran::runtime::io
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