delta/llvm.git/flang/runtime/io-api.cpp, branch EmptyLineAfterFunctionDefinition

[flang] Emit unformatted headers & footers even with RECL=

2021-10-22T18:07:01+00:00

The runtime library was emitting unformatted record headers and
footers when an external unit had no fixed RECL=.  This is wrong
for sequential files, which should have headers & footers even
with RECL.  Change to omit headers & footers from unformatted
I/O only for direct access files.

Differential Revision: https://reviews.llvm.org/D112243

[flang] runtime: fix output B/O/Z editing of "negative" values

2021-10-12T23:02:07+00:00

B/O/Z integer output editing must not reflect any sign extension
of scalar output values.  Add more size-dependent OutputInteger
I/O APIs and kind instantiations of EditIntegerOutput.

Differential Revision: https://reviews.llvm.org/D111678

[flang] Implement READ(SIZE=) and INQUIRE(IOLENGTH=) in runtime

2021-09-23T17:27:56+00:00

Count input characters corresponding to formatted edit descriptors
for READ(SIZE=); count output bytes for INQUIRE(IOLENGTH=).

The I/O APIs GetSize() and GetLength() were adjusted to return
std::size_t as function results.

Basic unit tests were added (and others fixed).

Differential Revision: https://reviews.llvm.org/D110291

[flang] Move runtime API headers to flang/include/flang/Runtime

2021-09-03T18:08:34+00:00

Move the closure of the subset of flang/runtime/*.h header files that
are referenced by source files outside flang/runtime (apart from unit tests)
into a new directory (flang/include/flang/Runtime) so that relative
include paths into ../runtime need not be used.

flang/runtime/pgmath.h.inc is moved to flang/include/flang/Evaluate;
it's not used by the runtime.

Differential Revision: https://reviews.llvm.org/D109107

[flang] Remove - C++ - incantation from runtime .cpp files. NFC

2021-09-03T07:17:45+00:00

We should only need to spell the language out in .h files.

Differential Revision: https://reviews.llvm.org/D109138

[flang] Fix "non-advancing" I/O, support $ in FORMAT

2021-06-28T19:18:25+00:00

Non-advancing I/O was failing; ExternalFileUnit was losing
track of what writes had been committed to the file.  Fixed.
Also, support the common extension of $ and \ in a FORMAT
as being equivalent to ADVANCE=NO.

Differential Revision: https://reviews.llvm.org/D105046

[flang] Implement user-defined derived type runtime I/O

2021-06-28T18:36:19+00:00

With derived type description tables now available to the
runtime library, it is possible to implement the concept
of "child" I/O statements in the runtime and use them to
convert instances of derived type I/O data transfers into
calls to user-defined subroutines when they have been specified
for a type.  (See Fortran 2018, subclauses 12.6.4.8 & 13.7.6).

 - Support formatted, list-directed, and NAMELIST
   transfers to internal parent units; support these, and unformatted
   transfers, for external parent units.
 - Support nested child defined derived type I/O.
 - Parse DT'foo'(v-list) FORMAT data edit descriptors and passes
   their strings &/or v-list values as arguments to the defined
   formatted I/O routines.
 - Fix problems with this feature encountered in semantics and
   FORMAT valiation during development and end-to-end testing.
 - Convert typeInfo::SpecialBinding from a struct to a class
   after adding a member function.

Differential Revision: https://reviews.llvm.org/D104930

[flang] Support legacy extension OPEN(ACCESS='APPEND')

2021-05-13T18:51:20+00:00

It should of course be POSITION='APPEND' but Sun Fortran
supported it on ACCESS=.

Differential Revision: https://reviews.llvm.org/D102350

[flang] Implement NAMELIST I/O in the runtime

2021-05-06T18:18:36+00:00

Add InputNamelist and OutputNamelist as I/O data transfer APIs
to be used with internal & external list-directed I/O; delete the
needless original namelist-specific Begin... calls.
Implement NAMELIST output and input; add basic tests.

Differential Revision: https://reviews.llvm.org/D101931

[flang] Runtime must defer formatted/unformatted determination

2021-05-06T18:06:43+00:00

What the Fortran standard calls "preconnected" external I/O units
might not be known to be connected to unformatted or formatted files
until the first I/O data transfer statement is executed.
Support this deferred determination by representing the flag as
a tri-state Boolean and adapting its points of use.

Differential Revision: https://reviews.llvm.org/D101929