59342b0641
checkpoint: changes build, tests all pass many fixes, ready to test more Further CLASS(*) support More fixes for CLASS(*) Hide data members of DynamicType implement PRESENT() intrinsic Original-commit: flang-compiler/f18@044ba12c20 Reviewed-on: https://github.com/flang-compiler/f18/pull/466 Tree-same-pre-rewrite: false
63 lines
2 KiB
C++
63 lines
2 KiB
C++
// Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#ifndef FORTRAN_EVALUATE_FORMATTING_H_
|
|
#define FORTRAN_EVALUATE_FORMATTING_H_
|
|
|
|
// It is inconvenient in C++ to have std::ostream::operator<<() as a direct
|
|
// friend function of a class template with many instantiations, so the
|
|
// various representational class templates in lib/evaluate format themselves
|
|
// via AsFortran(std::ostream &) member functions, which the operator<<()
|
|
// overload below will call. Others have AsFortran() member functions that
|
|
// return strings.
|
|
//
|
|
// This header is meant to be included by the headers that define the several
|
|
// representational class templates that need it, not by external clients.
|
|
|
|
#include "../common/indirection.h"
|
|
#include <optional>
|
|
#include <ostream>
|
|
#include <type_traits>
|
|
|
|
namespace Fortran::evaluate {
|
|
|
|
template<typename A>
|
|
auto operator<<(std::ostream &o, const A &x) -> decltype(x.AsFortran(o)) {
|
|
return x.AsFortran(o);
|
|
}
|
|
|
|
template<typename A>
|
|
auto operator<<(std::ostream &o, const A &x) -> decltype(o << x.AsFortran()) {
|
|
return o << x.AsFortran();
|
|
}
|
|
|
|
template<typename A, bool COPYABLE>
|
|
auto operator<<(
|
|
std::ostream &o, const Fortran::common::Indirection<A, COPYABLE> &x)
|
|
-> decltype(o << x.value()) {
|
|
return o << x.value();
|
|
}
|
|
|
|
template<typename A>
|
|
auto operator<<(std::ostream &o, const std::optional<A> &x)
|
|
-> decltype(o << *x) {
|
|
if (x.has_value()) {
|
|
o << *x;
|
|
} else {
|
|
o << "(nullopt)";
|
|
}
|
|
return o;
|
|
}
|
|
}
|
|
#endif // FORTRAN_EVALUATE_FORMATTING_H_
|