llvm/clang/include/clang/AST/StmtOpenACC.h

//===- StmtOpenACC.h - Classes for OpenACC directives  ----------*- 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
//
//===----------------------------------------------------------------------===//
/// \file
/// This file defines OpenACC AST classes for statement-level contructs.
///
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_AST_STMTOPENACC_H
#define LLVM_CLANG_AST_STMTOPENACC_H

#include "clang/AST/OpenACCClause.h"
#include "clang/AST/Stmt.h"
#include "clang/Basic/OpenACCKinds.h"
#include "clang/Basic/SourceLocation.h"
#include <memory>

namespace clang {
/// This is the base class for an OpenACC statement-level construct, other
/// construct types are expected to inherit from this.
class OpenACCConstructStmt : public Stmt { … };

/// This is a base class for any OpenACC statement-level constructs that have an
/// associated statement. This class is not intended to be instantiated, but is
/// a convenient place to hold the associated statement.
class OpenACCAssociatedStmtConstruct : public OpenACCConstructStmt { … };

class OpenACCLoopConstruct;
/// This class represents a compute construct, representing a 'Kind' of
/// `parallel', 'serial', or 'kernel'. These constructs are associated with a
/// 'structured block', defined as:
///
///  in C or C++, an executable statement, possibly compound, with a single
///  entry at the top and a single exit at the bottom
///
/// At the moment there is no real motivation to have a different AST node for
/// those three, as they are semantically identical, and have only minor
/// differences in the permitted list of clauses, which can be differentiated by
/// the 'Kind'.
class OpenACCComputeConstruct final
    : public OpenACCAssociatedStmtConstruct,
      public llvm::TrailingObjects<OpenACCComputeConstruct,
                                   const OpenACCClause *> { … };
/// This class represents a 'loop' construct.  The 'loop' construct applies to a
/// 'for' loop (or range-for loop), and is optionally associated with a Compute
/// Construct.
class OpenACCLoopConstruct final
    : public OpenACCAssociatedStmtConstruct,
      public llvm::TrailingObjects<OpenACCLoopConstruct,
                                   const OpenACCClause *> { … };
} // namespace clang
#endif // LLVM_CLANG_AST_STMTOPENACC_H