1//===--- LLVM.h - Import various common LLVM datatypes ----------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9/// \file
10/// Forward-declares and imports various common LLVM datatypes that
11/// clang wants to use unqualified.
12///
13//===----------------------------------------------------------------------===//
14
15#ifndef LLVM_CLANG_BASIC_LLVM_H
16#define LLVM_CLANG_BASIC_LLVM_H
17
18// Do not proliferate #includes here, require clients to #include their
19// dependencies.
20// Casting.h has complex templates that cannot be easily forward declared.
21#include "llvm/Support/Casting.h"
22// None.h includes an enumerator that is desired & cannot be forward declared
23// without a definition of NoneType.
24#include "llvm/ADT/None.h"
25// Add this header as a workaround to prevent `too few template arguments for
26// class template 'SmallVector'` building error with build compilers like XL.
27#include "llvm/ADT/SmallVector.h"
28
29namespace llvm {
30  // ADT's.
31  class StringRef;
32  class Twine;
33  class VersionTuple;
34  template<typename T> class ArrayRef;
35  template<typename T> class MutableArrayRef;
36  template<typename T> class OwningArrayRef;
37  template<unsigned InternalLen> class SmallString;
38  template<typename T, unsigned N> class SmallVector;
39  template<typename T> class SmallVectorImpl;
40  template<typename T> class Optional;
41  template <class T> class Expected;
42
43  template<typename T>
44  struct SaveAndRestore;
45
46  // Reference counting.
47  template <typename T> class IntrusiveRefCntPtr;
48  template <typename T> struct IntrusiveRefCntPtrInfo;
49  template <class Derived> class RefCountedBase;
50
51  class raw_ostream;
52  class raw_pwrite_stream;
53  // TODO: DenseMap, ...
54}
55
56
57namespace clang {
58  // Casting operators.
59  using llvm::isa;
60  using llvm::isa_and_nonnull;
61  using llvm::cast;
62  using llvm::dyn_cast;
63  using llvm::dyn_cast_or_null;
64  using llvm::cast_or_null;
65
66  // ADT's.
67  using llvm::ArrayRef;
68  using llvm::MutableArrayRef;
69  using llvm::None;
70  using llvm::Optional;
71  using llvm::OwningArrayRef;
72  using llvm::SaveAndRestore;
73  using llvm::SmallString;
74  using llvm::SmallVector;
75  using llvm::SmallVectorImpl;
76  using llvm::StringRef;
77  using llvm::Twine;
78  using llvm::VersionTuple;
79
80  // Error handling.
81  using llvm::Expected;
82
83  // Reference counting.
84  using llvm::IntrusiveRefCntPtr;
85  using llvm::IntrusiveRefCntPtrInfo;
86  using llvm::RefCountedBase;
87
88  using llvm::raw_ostream;
89  using llvm::raw_pwrite_stream;
90} // end namespace clang.
91
92#endif
93