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

source code of clang/include/clang/Basic/LLVM.h