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[flang] Allow INQUIRE() on a child unit in user-defined I/O procedure

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A procedure that implements a user-defined derived type I/O operation
is allowed to perform an INQUIRE statement on its unit.

Differential Revision: https://reviews.llvm.org/D117905https://reviews.llvm.org/D117905
This commit is contained in:
Peter Klausler 2022-01-18 10:40:10 -08:00
parent e796eaf2af
commit b1856009fb
2 changed files with 28 additions and 23 deletions
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49
flang/runtime/io-api.cpp
View File

@ -156,6 +156,13 @@ Cookie BeginExternalListIO(const char *what, int unitNumber,
}
ExternalFileUnit &unit{ExternalFileUnit::LookUpOrCreateAnonymous(
unitNumber, DIR, false /*!unformatted*/, terminator)};
if (!unit.isUnformatted.has_value()) {
unit.isUnformatted = false;
}
if (*unit.isUnformatted) {
terminator.Crash("%s attempted on unformatted file", what);
return nullptr;
}
if (ChildIo * child{unit.GetChildIo()}) {
return child->CheckFormattingAndDirection(terminator, what, false, DIR)
? &child->BeginIoStatement<ChildListIoStatementState<DIR>>(
@ -166,13 +173,6 @@ Cookie BeginExternalListIO(const char *what, int unitNumber,
terminator.Crash("%s attempted on direct access file", what);
return nullptr;
}
if (!unit.isUnformatted.has_value()) {
unit.isUnformatted = false;
}
if (*unit.isUnformatted) {
terminator.Crash("%s attempted on unformatted file", what);
return nullptr;
}
IoErrorHandler handler{terminator};
unit.SetDirection(DIR, handler);
IoStatementState &io{unit.BeginIoStatement<STATE<DIR>>(
@ -202,6 +202,13 @@ Cookie BeginExternalFormattedIO(const char *format, std::size_t formatLength,
}
ExternalFileUnit &unit{ExternalFileUnit::LookUpOrCreateAnonymous(
unitNumber, DIR, false /*!unformatted*/, terminator)};
if (!unit.isUnformatted.has_value()) {
unit.isUnformatted = false;
}
if (*unit.isUnformatted) {
terminator.Crash("Formatted I/O attempted on unformatted file");
return nullptr;
}
if (ChildIo * child{unit.GetChildIo()}) {
return child->CheckFormattingAndDirection(terminator,
DIR == Direction::Output ? "formatted output"
@ -211,13 +218,6 @@ Cookie BeginExternalFormattedIO(const char *format, std::size_t formatLength,
*child, sourceFile, sourceLine)
: nullptr;
} else {
if (!unit.isUnformatted.has_value()) {
unit.isUnformatted = false;
}
if (*unit.isUnformatted) {
terminator.Crash("Formatted I/O attempted on unformatted file");
return nullptr;
}
IoErrorHandler handler{terminator};
unit.SetDirection(DIR, handler);
IoStatementState &io{
@ -247,6 +247,12 @@ Cookie BeginUnformattedIO(
Terminator terminator{sourceFile, sourceLine};
ExternalFileUnit &unit{ExternalFileUnit::LookUpOrCreateAnonymous(
unitNumber, DIR, true /*unformatted*/, terminator)};
if (!unit.isUnformatted.has_value()) {
unit.isUnformatted = true;
}
if (!*unit.isUnformatted) {
terminator.Crash("Unformatted I/O attempted on formatted file");
}
if (ChildIo * child{unit.GetChildIo()}) {
return child->CheckFormattingAndDirection(terminator,
DIR == Direction::Output ? "unformatted output"
@ -256,12 +262,6 @@ Cookie BeginUnformattedIO(
*child, sourceFile, sourceLine)
: nullptr;
} else {
if (!unit.isUnformatted.has_value()) {
unit.isUnformatted = true;
}
if (!*unit.isUnformatted) {
terminator.Crash("Unformatted I/O attempted on formatted file");
}
IoStatementState &io{
unit.BeginIoStatement<ExternalUnformattedIoStatementState<DIR>>(
unit, sourceFile, sourceLine)};
@ -367,8 +367,13 @@ Cookie IONAME(BeginRewind)(
Cookie IONAME(BeginInquireUnit)(
ExternalUnit unitNumber, const char *sourceFile, int sourceLine) {
if (ExternalFileUnit * unit{ExternalFileUnit::LookUp(unitNumber)}) {
return &unit->BeginIoStatement<InquireUnitState>(
*unit, sourceFile, sourceLine);
if (ChildIo * child{unit->GetChildIo()}) {
return &child->BeginIoStatement<InquireUnitState>(
*unit, sourceFile, sourceLine);
} else {
return &unit->BeginIoStatement<InquireUnitState>(
*unit, sourceFile, sourceLine);
}
} else {
// INQUIRE(UNIT=unrecognized unit)
Terminator oom{sourceFile, sourceLine};

2
flang/runtime/unit.h
View File

@ -183,7 +183,7 @@ private:
ChildListIoStatementState<Direction::Output>,
ChildListIoStatementState<Direction::Input>,
ChildUnformattedIoStatementState<Direction::Output>,
ChildUnformattedIoStatementState<Direction::Input>>
ChildUnformattedIoStatementState<Direction::Input>, InquireUnitState>
u_;
std::optional<IoStatementState> io_;
};