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