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 
29 namespace 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 
57 namespace 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