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 
26 namespace 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 
53 namespace 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