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//===-- lib/Semantics/assignment.h ------------------------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef FORTRAN_SEMANTICS_ASSIGNMENT_H_
#define FORTRAN_SEMANTICS_ASSIGNMENT_H_
#include "flang/Common/indirection.h"
#include "flang/Evaluate/expression.h"
#include "flang/Semantics/semantics.h"
namespace Fortran::parser {
class ContextualMessages;
struct AssignmentStmt;
struct EndWhereStmt;
struct MaskedElsewhereStmt;
struct PointerAssignmentStmt;
struct WhereConstructStmt;
struct WhereStmt;
} // namespace Fortran::parser
namespace Fortran::semantics {
class AssignmentContext;
class Scope;
class Symbol;
// Applies checks from C1594(1-2) on definitions in pure subprograms
bool CheckDefinabilityInPureScope(parser::ContextualMessages &, const Symbol &,
const Scope &context, const Scope &pure);
// Applies checks from C1594(5-6) on copying pointers in pure subprograms
bool CheckCopyabilityInPureScope(parser::ContextualMessages &,
const evaluate::Expr<evaluate::SomeType> &, const Scope &);
class AssignmentChecker : public virtual BaseChecker {
public:
explicit AssignmentChecker(SemanticsContext &);
~AssignmentChecker();
void Enter(const parser::AssignmentStmt &);
void Enter(const parser::PointerAssignmentStmt &);
void Enter(const parser::WhereStmt &);
void Leave(const parser::WhereStmt &);
void Enter(const parser::WhereConstructStmt &);
void Leave(const parser::EndWhereStmt &);
void Enter(const parser::MaskedElsewhereStmt &);
void Leave(const parser::MaskedElsewhereStmt &);
private:
common::Indirection<AssignmentContext> context_;
};
} // namespace Fortran::semantics
extern template class Fortran::common::Indirection<
Fortran::semantics::AssignmentContext>;
#endif // FORTRAN_SEMANTICS_ASSIGNMENT_H_
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