llvm/flang/lib/semantics/mod-file.h
Tim Keith e0b94a84c3 [flang] Resolve procedure bindings and final procedures in derived types
Add new kinds of symbol details: ProcBindingDetails, FinalProcDetails.
and GenericBindingDetails. The last is not yet implemented.
Write them to the .mod file.

Recognize DEFERRED and NON_OVERRIDABLE attributes. Enforce C783.

Resolve CLASS(t) similarly to resolution of TYPE(t).

Original-commit: flang-compiler/f18@0c0a9ab79e
Reviewed-on: https://github.com/flang-compiler/f18/pull/173
Tree-same-pre-rewrite: false
2018-08-31 16:20:00 -07:00

99 lines
3 KiB
C++

// Copyright (c) 2018, 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_SEMANTICS_MOD_FILE_H_
#define FORTRAN_SEMANTICS_MOD_FILE_H_
#include "attr.h"
#include "resolve-names.h"
#include "../parser/message.h"
#include "../parser/provenance.h"
#include <iosfwd>
#include <set>
#include <sstream>
#include <string>
#include <vector>
namespace Fortran::parser {
class CharBlock;
}
namespace Fortran::semantics {
using SourceName = parser::CharBlock;
class Symbol;
class Scope;
class ModFileWriter {
public:
// The directory to write .mod files in.
void set_directory(const std::string &dir) { dir_ = dir; }
// Errors encountered during writing. Non-empty if WriteAll returns false.
parser::Messages &errors() { return errors_; }
// Write out all .mod files; if error return false.
bool WriteAll();
private:
using symbolSet = std::set<const Symbol *>;
using symbolVector = std::vector<const Symbol *>;
std::string dir_{"."};
// The mod file consists of uses, declarations, and contained subprograms:
std::stringstream uses_;
std::stringstream useExtraAttrs_; // attrs added to used entity
std::stringstream decls_;
std::stringstream contains_;
// Any errors encountered during writing:
parser::Messages errors_;
void WriteChildren(const Scope &);
void WriteOne(const Scope &);
void Write(const Symbol &);
std::string GetAsString(const Symbol &);
void PutSymbols(const Scope &);
symbolVector SortSymbols(const symbolSet);
symbolSet CollectSymbols(const Scope &);
void PutSymbol(const Symbol &, bool &);
void PutDerivedType(const Symbol &);
void PutSubprogram(const Symbol &);
void PutGeneric(const Symbol &);
void PutUse(const Symbol &);
void PutUseExtraAttr(Attr, const Symbol &, const Symbol &);
};
class ModFileReader {
public:
// directories specifies where to search for module files
ModFileReader(const std::vector<std::string> &directories)
: directories_{directories} {}
// Find and read the module file for a module or submodule.
// If ancestor is specified, look for a submodule of that module.
// Return the Scope for that module/submodule or nullptr on error.
Scope *Read(const SourceName &, Scope *ancestor = nullptr);
// Errors that occurred when Read returns nullptr.
parser::Messages &errors() { return errors_; }
private:
std::vector<std::string> directories_;
parser::Messages errors_;
std::optional<std::string> FindModFile(
const SourceName &, const std::string &);
};
} // namespace Fortran::semantics
#endif