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// Add this header as a workaround to prevent `too few template arguments for
23// class template 'SmallVector'` building error with build compilers like XL.
24#include "llvm/ADT/SmallVector.h"
25
26namespace llvm {
27  // ADT's.
28  class StringRef;
29  class Twine;
30  class VersionTuple;
31  template<typename T> class ArrayRef;
32  template<typename T> class MutableArrayRef;
33  template<typename T> class OwningArrayRef;
34  template<unsigned InternalLen> class SmallString;
35  template<typename T, unsigned N> class SmallVector;
36  template<typename T> class SmallVectorImpl;
37  template <class T> class Expected;
38
39  template<typename T>
40  struct SaveAndRestore;
41
42  // Reference counting.
43  template <typename T> class IntrusiveRefCntPtr;
44  template <typename T> struct IntrusiveRefCntPtrInfo;
45  template <class Derived> class RefCountedBase;
46
47  class raw_ostream;
48  class raw_pwrite_stream;
49  // TODO: DenseMap, ...
50}
51
52
53namespace clang {
54  // Casting operators.
55  using llvm::isa;
56  using llvm::isa_and_nonnull;
57  using llvm::isa_and_present;
58  using llvm::cast;
59  using llvm::dyn_cast;
60  using llvm::dyn_cast_or_null;
61  using llvm::dyn_cast_if_present;
62  using llvm::cast_or_null;
63  using llvm::cast_if_present;
64
65  // ADT's.
66  using llvm::ArrayRef;
67  using llvm::MutableArrayRef;
68  using llvm::OwningArrayRef;
69  using llvm::SaveAndRestore;
70  using llvm::SmallString;
71  using llvm::SmallVector;
72  using llvm::SmallVectorImpl;
73  using llvm::StringRef;
74  using llvm::Twine;
75  using llvm::VersionTuple;
76
77  // Error handling.
78  using llvm::Expected;
79
80  // Reference counting.
81  using llvm::IntrusiveRefCntPtr;
82  using llvm::IntrusiveRefCntPtrInfo;
83  using llvm::RefCountedBase;
84
85  using llvm::raw_ostream;
86  using llvm::raw_pwrite_stream;
87} // end namespace clang.
88
89#endif
90