ASTConcept.h

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//===--- ASTConcept.h - Concepts Related AST Data Structures ----*- 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
/// \brief This file provides AST data structures related to concepts.
///
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_CLANG_AST_ASTCONCEPT_H
#define LLVM_CLANG_AST_ASTCONCEPT_H
 
#include "clang/AST/DeclarationName.h"
#include "clang/AST/NestedNameSpecifier.h"
#include "clang/AST/TemplateBase.h"
#include "clang/Basic/SourceLocation.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/PointerUnion.h"
#include "llvm/ADT/SmallVector.h"
#include <utility>
 
namespace clang {
 
class ConceptDecl;
class Expr;
class NamedDecl;
struct PrintingPolicy;
 
/// The result of a constraint satisfaction check, containing the necessary
/// information to diagnose an unsatisfied constraint.
class ConstraintSatisfaction : public llvm::FoldingSetNode {
  // The template-like entity that 'owns' the constraint checked here (can be a
  // constrained entity or a concept).
  const NamedDecl *ConstraintOwner = nullptr;