Coverage Report

Created: 2020-02-25 14:32

/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/include/clang/Sema/Ownership.h
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//===- Ownership.h - Parser ownership helpers -------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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//  This file contains classes for managing ownership of Stmt and Expr nodes.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_SEMA_OWNERSHIP_H
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#define LLVM_CLANG_SEMA_OWNERSHIP_H
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#include "clang/AST/Expr.h"
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#include "clang/Basic/LLVM.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/Support/PointerLikeTypeTraits.h"
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#include "llvm/Support/type_traits.h"
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#include <cassert>
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#include <cstddef>
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#include <cstdint>
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//===----------------------------------------------------------------------===//
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// OpaquePtr
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//===----------------------------------------------------------------------===//
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namespace clang {
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class CXXBaseSpecifier;
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class CXXCtorInitializer;
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class Decl;
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class Expr;
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class ParsedTemplateArgument;
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class QualType;
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class Stmt;
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class TemplateName;
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class TemplateParameterList;
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  /// Wrapper for void* pointer.
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  /// \tparam PtrTy Either a pointer type like 'T*' or a type that behaves like
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  ///               a pointer.
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  ///
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  /// This is a very simple POD type that wraps a pointer that the Parser
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  /// doesn't know about but that Sema or another client does.  The PtrTy
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  /// template argument is used to make sure that "Decl" pointers are not
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  /// compatible with "Type" pointers for example.
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  template <class PtrTy>
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  class OpaquePtr {
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    void *Ptr = nullptr;
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53
53.3M
    explicit OpaquePtr(void *Ptr) : Ptr(Ptr) {}
clang::OpaquePtr<clang::QualType>::OpaquePtr(void*)
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Source
53
53.3M
    explicit OpaquePtr(void *Ptr) : Ptr(Ptr) {}
clang::OpaquePtr<clang::TemplateName>::OpaquePtr(void*)
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Source
53
6.30k
    explicit OpaquePtr(void *Ptr) : Ptr(Ptr) {}
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55
    using Traits = llvm::PointerLikeTypeTraits<PtrTy>;
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  public:
58
210M
    OpaquePtr(std::nullptr_t = nullptr) {}
clang::OpaquePtr<clang::DeclGroupRef>::OpaquePtr(std::nullptr_t)
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Count
Source
58
24.2M
    OpaquePtr(std::nullptr_t = nullptr) {}
clang::OpaquePtr<clang::QualType>::OpaquePtr(std::nullptr_t)
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Count
Source
58
158M
    OpaquePtr(std::nullptr_t = nullptr) {}
clang::OpaquePtr<clang::TemplateName>::OpaquePtr(std::nullptr_t)
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Count
Source
58
28.3M
    OpaquePtr(std::nullptr_t = nullptr) {}
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60
60.8M
    static OpaquePtr make(PtrTy P) { OpaquePtr OP; OP.set(P); return OP; }
clang::OpaquePtr<clang::QualType>::make(clang::QualType)
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Count
Source
60
43.4M
    static OpaquePtr make(PtrTy P) { OpaquePtr OP; OP.set(P); return OP; }
clang::OpaquePtr<clang::DeclGroupRef>::make(clang::DeclGroupRef)
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Source
60
14.5M
    static OpaquePtr make(PtrTy P) { OpaquePtr OP; OP.set(P); return OP; }
clang::OpaquePtr<clang::TemplateName>::make(clang::TemplateName)
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60
2.84M
    static OpaquePtr make(PtrTy P) { OpaquePtr OP; OP.set(P); return OP; }
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62
    /// Returns plain pointer to the entity pointed by this wrapper.
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    /// \tparam PointeeT Type of pointed entity.
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    ///
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    /// It is identical to getPtrAs<PointeeT*>.
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    template <typename PointeeT> PointeeT* getPtrTo() const {
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      return get();
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    }
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    /// Returns pointer converted to the specified type.
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    /// \tparam PtrT Result pointer type.  There must be implicit conversion
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    ///              from PtrTy to PtrT.
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    ///
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    /// In contrast to getPtrTo, this method allows the return type to be
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    /// a smart pointer.
76
    template <typename PtrT> PtrT getPtrAs() const {
77
      return get();
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    }
79
80
72.1M
    PtrTy get() const {
81
72.1M
      return Traits::getFromVoidPointer(Ptr);
82
72.1M
    }
clang::OpaquePtr<clang::DeclGroupRef>::get() const
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Count
Source
80
9.36M
    PtrTy get() const {
81
9.36M
      return Traits::getFromVoidPointer(Ptr);
82
9.36M
    }
clang::OpaquePtr<clang::QualType>::get() const
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Count
Source
80
59.8M
    PtrTy get() const {
81
59.8M
      return Traits::getFromVoidPointer(Ptr);
82
59.8M
    }
clang::OpaquePtr<clang::TemplateName>::get() const
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Count
Source
80
2.86M
    PtrTy get() const {
81
2.86M
      return Traits::getFromVoidPointer(Ptr);
82
2.86M
    }
83
84
60.8M
    void set(PtrTy P) {
85
60.8M
      Ptr = Traits::getAsVoidPointer(P);
86
60.8M
    }
clang::OpaquePtr<clang::QualType>::set(clang::QualType)
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Count
Source
84
43.4M
    void set(PtrTy P) {
85
43.4M
      Ptr = Traits::getAsVoidPointer(P);
86
43.4M
    }
clang::OpaquePtr<clang::DeclGroupRef>::set(clang::DeclGroupRef)
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Count
Source
84
14.5M
    void set(PtrTy P) {
85
14.5M
      Ptr = Traits::getAsVoidPointer(P);
86
14.5M
    }
clang::OpaquePtr<clang::TemplateName>::set(clang::TemplateName)
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Count
Source
84
2.84M
    void set(PtrTy P) {
85
2.84M
      Ptr = Traits::getAsVoidPointer(P);
86
2.84M
    }
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88
118M
    explicit operator bool() const { return Ptr != nullptr; }
clang::OpaquePtr<clang::DeclGroupRef>::operator bool() const
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Count
Source
88
8.06M
    explicit operator bool() const { return Ptr != nullptr; }
clang::OpaquePtr<clang::QualType>::operator bool() const
Line
Count
Source
88
108M
    explicit operator bool() const { return Ptr != nullptr; }
clang::OpaquePtr<clang::TemplateName>::operator bool() const
Line
Count
Source
88
2.71M
    explicit operator bool() const { return Ptr != nullptr; }
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90
56.4M
    void *getAsOpaquePtr() const { return Ptr; }
clang::OpaquePtr<clang::QualType>::getAsOpaquePtr() const
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Count
Source
90
56.4M
    void *getAsOpaquePtr() const { return Ptr; }
clang::OpaquePtr<clang::TemplateName>::getAsOpaquePtr() const
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Source
90
5.12k
    void *getAsOpaquePtr() const { return Ptr; }
clang::OpaquePtr<clang::DeclGroupRef>::getAsOpaquePtr() const
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Count
Source
90
2
    void *getAsOpaquePtr() const { return Ptr; }
91
53.3M
    static OpaquePtr getFromOpaquePtr(void *P) { return OpaquePtr(P); }
clang::OpaquePtr<clang::QualType>::getFromOpaquePtr(void*)
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Count
Source
91
53.3M
    static OpaquePtr getFromOpaquePtr(void *P) { return OpaquePtr(P); }
clang::OpaquePtr<clang::TemplateName>::getFromOpaquePtr(void*)
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Count
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91
6.30k
    static OpaquePtr getFromOpaquePtr(void *P) { return OpaquePtr(P); }
92
  };
93
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  /// UnionOpaquePtr - A version of OpaquePtr suitable for membership
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  /// in a union.
96
  template <class T> struct UnionOpaquePtr {
97
    void *Ptr;
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    static UnionOpaquePtr make(OpaquePtr<T> P) {
100
      UnionOpaquePtr OP = { P.getAsOpaquePtr() };
101
      return OP;
102
    }
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34.9M
    OpaquePtr<T> get() const { return OpaquePtr<T>::getFromOpaquePtr(Ptr); }
clang::UnionOpaquePtr<clang::QualType>::get() const
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Source
104
34.9M
    OpaquePtr<T> get() const { return OpaquePtr<T>::getFromOpaquePtr(Ptr); }
clang::UnionOpaquePtr<clang::TemplateName>::get() const
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Count
Source
104
1.52k
    OpaquePtr<T> get() const { return OpaquePtr<T>::getFromOpaquePtr(Ptr); }
105
34.9M
    operator OpaquePtr<T>() const { return get(); }
106
107
38.4M
    UnionOpaquePtr &operator=(OpaquePtr<T> P) {
108
38.4M
      Ptr = P.getAsOpaquePtr();
109
38.4M
      return *this;
110
38.4M
    }
clang::UnionOpaquePtr<clang::QualType>::operator=(clang::OpaquePtr<clang::QualType>)
Line
Count
Source
107
38.4M
    UnionOpaquePtr &operator=(OpaquePtr<T> P) {
108
38.4M
      Ptr = P.getAsOpaquePtr();
109
38.4M
      return *this;
110
38.4M
    }
clang::UnionOpaquePtr<clang::TemplateName>::operator=(clang::OpaquePtr<clang::TemplateName>)
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Count
Source
107
382
    UnionOpaquePtr &operator=(OpaquePtr<T> P) {
108
382
      Ptr = P.getAsOpaquePtr();
109
382
      return *this;
110
382
    }
111
  };
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} // namespace clang
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namespace llvm {
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  template <class T>
118
  struct PointerLikeTypeTraits<clang::OpaquePtr<T>> {
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    static constexpr int NumLowBitsAvailable = 0;
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    static inline void *getAsVoidPointer(clang::OpaquePtr<T> P) {
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      // FIXME: Doesn't work? return P.getAs< void >();
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      return P.getAsOpaquePtr();
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    }
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    static inline clang::OpaquePtr<T> getFromVoidPointer(void *P) {
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      return clang::OpaquePtr<T>::getFromOpaquePtr(P);
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    }
129
  };
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} // namespace llvm
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namespace clang {
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  // Basic
136
  class DiagnosticBuilder;
137
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  // Determines whether the low bit of the result pointer for the
139
  // given UID is always zero. If so, ActionResult will use that bit
140
  // for it's "invalid" flag.
141
  template<class Ptr>
142
  struct IsResultPtrLowBitFree {
143
    static const bool value = false;
144
  };
145
146
  /// ActionResult - This structure is used while parsing/acting on
147
  /// expressions, stmts, etc.  It encapsulates both the object returned by
148
  /// the action, plus a sense of whether or not it is valid.
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  /// When CompressInvalid is true, the "invalid" flag will be
150
  /// stored in the low bit of the Val pointer.
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  template<class PtrTy,
152
           bool CompressInvalid = IsResultPtrLowBitFree<PtrTy>::value>
153
  class ActionResult {
154
    PtrTy Val;
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    bool Invalid;
156
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  public:
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13.6M
    ActionResult(bool Invalid = false) : Val(PtrTy()), Invalid(Invalid) {}
clang::ActionResult<clang::OpaquePtr<clang::QualType>, false>::ActionResult(bool)
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158
11.9M
    ActionResult(bool Invalid = false) : Val(PtrTy()), Invalid(Invalid) {}
clang::ActionResult<clang::Decl*, false>::ActionResult(bool)
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158
1.79M
    ActionResult(bool Invalid = false) : Val(PtrTy()), Invalid(Invalid) {}
159
9.31M
    ActionResult(PtrTy val) : Val(val), Invalid(false) {}
clang::ActionResult<clang::OpaquePtr<clang::QualType>, false>::ActionResult(clang::OpaquePtr<clang::QualType>)
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Source
159
8.73M
    ActionResult(PtrTy val) : Val(val), Invalid(false) {}
clang::ActionResult<clang::Decl*, false>::ActionResult(clang::Decl*)
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Source
159
577k
    ActionResult(PtrTy val) : Val(val), Invalid(false) {}
160
7
    ActionResult(const DiagnosticBuilder &) : Val(PtrTy()), Invalid(true) {}
161
162
    // These two overloads prevent void* -> bool conversions.
163
    ActionResult(const void *) = delete;
164
    ActionResult(volatile void *) = delete;
165
166
17.2M
    bool isInvalid() const { return Invalid; }
clang::ActionResult<clang::OpaquePtr<clang::QualType>, false>::isInvalid() const
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Count
Source
166
13.6M
    bool isInvalid() const { return Invalid; }
clang::ActionResult<clang::Decl*, false>::isInvalid() const
Line
Count
Source
166
3.61M
    bool isInvalid() const { return Invalid; }
167
7.76M
    bool isUsable() const { return !Invalid && 
Val7.76M
; }
clang::ActionResult<clang::OpaquePtr<clang::QualType>, false>::isUsable() const
Line
Count
Source
167
7.69M
    bool isUsable() const { return !Invalid && 
Val7.68M
; }
clang::ActionResult<clang::Decl*, false>::isUsable() const
Line
Count
Source
167
73.4k
    bool isUsable() const { return !Invalid && Val; }
168
1.99M
    bool isUnset() const { return !Invalid && 
!Val1.99M
; }
169
170
25.7M
    PtrTy get() const { return Val; }
clang::ActionResult<clang::OpaquePtr<clang::QualType>, false>::get() const
Line
Count
Source
170
20.7M
    PtrTy get() const { return Val; }
clang::ActionResult<clang::Decl*, false>::get() const
Line
Count
Source
170
4.92M
    PtrTy get() const { return Val; }
171
    template <typename T> T *getAs() { return static_cast<T*>(get()); }
172
173
    void set(PtrTy V) { Val = V; }
174
175
1.55M
    const ActionResult &operator=(PtrTy RHS) {
176
1.55M
      Val = RHS;
177
1.55M
      Invalid = false;
178
1.55M
      return *this;
179
1.55M
    }
180
  };
181
182
  // This ActionResult partial specialization places the "invalid"
183
  // flag into the low bit of the pointer.
184
  template<typename PtrTy>
185
  class ActionResult<PtrTy, true> {
186
    // A pointer whose low bit is 1 if this result is invalid, 0
187
    // otherwise.
188
    uintptr_t PtrWithInvalid;
189
190
    using PtrTraits = llvm::PointerLikeTypeTraits<PtrTy>;
191
192
  public:
193
    ActionResult(bool Invalid = false)
194
152M
        : PtrWithInvalid(static_cast<uintptr_t>(Invalid)) {}
clang::ActionResult<clang::Expr*, true>::ActionResult(bool)
Line
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Source
194
136M
        : PtrWithInvalid(static_cast<uintptr_t>(Invalid)) {}
clang::ActionResult<clang::CXXBaseSpecifier*, true>::ActionResult(bool)
Line
Count
Source
194
236
        : PtrWithInvalid(static_cast<uintptr_t>(Invalid)) {}
clang::ActionResult<clang::CXXCtorInitializer*, true>::ActionResult(bool)
Line
Count
Source
194
32.0k
        : PtrWithInvalid(static_cast<uintptr_t>(Invalid)) {}
clang::ActionResult<clang::Stmt*, true>::ActionResult(bool)
Line
Count
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194
15.7M
        : PtrWithInvalid(static_cast<uintptr_t>(Invalid)) {}
195
196
310M
    ActionResult(PtrTy V) {
197
310M
      void *VP = PtrTraits::getAsVoidPointer(V);
198
310M
      PtrWithInvalid = reinterpret_cast<uintptr_t>(VP);
199
310M
      assert((PtrWithInvalid & 0x01) == 0 && "Badly aligned pointer");
200
310M
    }
clang::ActionResult<clang::Expr*, true>::ActionResult(clang::Expr*)
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Source
196
299M
    ActionResult(PtrTy V) {
197
299M
      void *VP = PtrTraits::getAsVoidPointer(V);
198
299M
      PtrWithInvalid = reinterpret_cast<uintptr_t>(VP);
199
299M
      assert((PtrWithInvalid & 0x01) == 0 && "Badly aligned pointer");
200
299M
    }
clang::ActionResult<clang::Stmt*, true>::ActionResult(clang::Stmt*)
Line
Count
Source
196
10.5M
    ActionResult(PtrTy V) {
197
10.5M
      void *VP = PtrTraits::getAsVoidPointer(V);
198
10.5M
      PtrWithInvalid = reinterpret_cast<uintptr_t>(VP);
199
10.5M
      assert((PtrWithInvalid & 0x01) == 0 && "Badly aligned pointer");
200
10.5M
    }
clang::ActionResult<clang::CXXBaseSpecifier*, true>::ActionResult(clang::CXXBaseSpecifier*)
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Source
196
207k
    ActionResult(PtrTy V) {
197
207k
      void *VP = PtrTraits::getAsVoidPointer(V);
198
207k
      PtrWithInvalid = reinterpret_cast<uintptr_t>(VP);
199
207k
      assert((PtrWithInvalid & 0x01) == 0 && "Badly aligned pointer");
200
207k
    }
clang::ActionResult<clang::CXXCtorInitializer*, true>::ActionResult(clang::CXXCtorInitializer*)
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Count
Source
196
220k
    ActionResult(PtrTy V) {
197
220k
      void *VP = PtrTraits::getAsVoidPointer(V);
198
220k
      PtrWithInvalid = reinterpret_cast<uintptr_t>(VP);
199
220k
      assert((PtrWithInvalid & 0x01) == 0 && "Badly aligned pointer");
200
220k
    }
201
202
283
    ActionResult(const DiagnosticBuilder &) : PtrWithInvalid(0x01) {}
clang::ActionResult<clang::CXXCtorInitializer*, true>::ActionResult(clang::DiagnosticBuilder const&)
Line
Count
Source
202
23
    ActionResult(const DiagnosticBuilder &) : PtrWithInvalid(0x01) {}
clang::ActionResult<clang::Expr*, true>::ActionResult(clang::DiagnosticBuilder const&)
Line
Count
Source
202
258
    ActionResult(const DiagnosticBuilder &) : PtrWithInvalid(0x01) {}
clang::ActionResult<clang::Stmt*, true>::ActionResult(clang::DiagnosticBuilder const&)
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Count
Source
202
2
    ActionResult(const DiagnosticBuilder &) : PtrWithInvalid(0x01) {}
203
204
    // These two overloads prevent void* -> bool conversions.
205
    ActionResult(const void *) = delete;
206
    ActionResult(volatile void *) = delete;
207
208
388M
    bool isInvalid() const { return PtrWithInvalid & 0x01; }
clang::ActionResult<clang::Expr*, true>::isInvalid() const
Line
Count
Source
208
378M
    bool isInvalid() const { return PtrWithInvalid & 0x01; }
clang::ActionResult<clang::Stmt*, true>::isInvalid() const
Line
Count
Source
208
9.00M
    bool isInvalid() const { return PtrWithInvalid & 0x01; }
clang::ActionResult<clang::CXXBaseSpecifier*, true>::isInvalid() const
Line
Count
Source
208
207k
    bool isInvalid() const { return PtrWithInvalid & 0x01; }
clang::ActionResult<clang::CXXCtorInitializer*, true>::isInvalid() const
Line
Count
Source
208
220k
    bool isInvalid() const { return PtrWithInvalid & 0x01; }
209
59.6M
    bool isUsable() const { return PtrWithInvalid > 0x01; }
clang::ActionResult<clang::Expr*, true>::isUsable() const
Line
Count
Source
209
53.4M
    bool isUsable() const { return PtrWithInvalid > 0x01; }
clang::ActionResult<clang::Stmt*, true>::isUsable() const
Line
Count
Source
209
6.17M
    bool isUsable() const { return PtrWithInvalid > 0x01; }
210
23.0M
    bool isUnset() const { return PtrWithInvalid == 0; }
211
212
648M
    PtrTy get() const {
213
648M
      void *VP = reinterpret_cast<void *>(PtrWithInvalid & ~0x01);
214
648M
      return PtrTraits::getFromVoidPointer(VP);
215
648M
    }
clang::ActionResult<clang::Expr*, true>::get() const
Line
Count
Source
212
632M
    PtrTy get() const {
213
632M
      void *VP = reinterpret_cast<void *>(PtrWithInvalid & ~0x01);
214
632M
      return PtrTraits::getFromVoidPointer(VP);
215
632M
    }
clang::ActionResult<clang::Stmt*, true>::get() const
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Count
Source
212
16.0M
    PtrTy get() const {
213
16.0M
      void *VP = reinterpret_cast<void *>(PtrWithInvalid & ~0x01);
214
16.0M
      return PtrTraits::getFromVoidPointer(VP);
215
16.0M
    }
clang::ActionResult<clang::CXXBaseSpecifier*, true>::get() const
Line
Count
Source
212
207k
    PtrTy get() const {
213
207k
      void *VP = reinterpret_cast<void *>(PtrWithInvalid & ~0x01);
214
207k
      return PtrTraits::getFromVoidPointer(VP);
215
207k
    }
clang::ActionResult<clang::CXXCtorInitializer*, true>::get() const
Line
Count
Source
212
220k
    PtrTy get() const {
213
220k
      void *VP = reinterpret_cast<void *>(PtrWithInvalid & ~0x01);
214
220k
      return PtrTraits::getFromVoidPointer(VP);
215
220k
    }
216
217
12.8M
    template <typename T> T *getAs() { return static_cast<T*>(get()); }
clang::StringLiteral* clang::ActionResult<clang::Expr*, true>::getAs<clang::StringLiteral>()
Line
Count
Source
217
4
    template <typename T> T *getAs() { return static_cast<T*>(get()); }
clang::Expr* clang::ActionResult<clang::Expr*, true>::getAs<clang::Expr>()
Line
Count
Source
217
10.2M
    template <typename T> T *getAs() { return static_cast<T*>(get()); }
clang::Stmt* clang::ActionResult<clang::Expr*, true>::getAs<clang::Stmt>()
Line
Count
Source
217
1.79M
    template <typename T> T *getAs() { return static_cast<T*>(get()); }
clang::Expr* clang::ActionResult<clang::Stmt*, true>::getAs<clang::Expr>()
Line
Count
Source
217
409
    template <typename T> T *getAs() { return static_cast<T*>(get()); }
clang::Stmt* clang::ActionResult<clang::Stmt*, true>::getAs<clang::Stmt>()
Line
Count
Source
217
384k
    template <typename T> T *getAs() { return static_cast<T*>(get()); }
clang::CXXConstructExpr* clang::ActionResult<clang::Expr*, true>::getAs<clang::CXXConstructExpr>()
Line
Count
Source
217
74
    template <typename T> T *getAs() { return static_cast<T*>(get()); }
clang::DeclRefExpr* clang::ActionResult<clang::Expr*, true>::getAs<clang::DeclRefExpr>()
Line
Count
Source
217
208
    template <typename T> T *getAs() { return static_cast<T*>(get()); }
clang::OMPExecutableDirective* clang::ActionResult<clang::Stmt*, true>::getAs<clang::OMPExecutableDirective>()
Line
Count
Source
217
429k
    template <typename T> T *getAs() { return static_cast<T*>(get()); }
218
219
    void set(PtrTy V) {
220
      void *VP = PtrTraits::getAsVoidPointer(V);
221
      PtrWithInvalid = reinterpret_cast<uintptr_t>(VP);
222
      assert((PtrWithInvalid & 0x01) == 0 && "Badly aligned pointer");
223
    }
224
225
22.4M
    const ActionResult &operator=(PtrTy RHS) {
226
22.4M
      void *VP = PtrTraits::getAsVoidPointer(RHS);
227
22.4M
      PtrWithInvalid = reinterpret_cast<uintptr_t>(VP);
228
22.4M
      assert((PtrWithInvalid & 0x01) == 0 && "Badly aligned pointer");
229
22.4M
      return *this;
230
22.4M
    }
clang::ActionResult<clang::Expr*, true>::operator=(clang::Expr*)
Line
Count
Source
225
22.4M
    const ActionResult &operator=(PtrTy RHS) {
226
22.4M
      void *VP = PtrTraits::getAsVoidPointer(RHS);
227
22.4M
      PtrWithInvalid = reinterpret_cast<uintptr_t>(VP);
228
22.4M
      assert((PtrWithInvalid & 0x01) == 0 && "Badly aligned pointer");
229
22.4M
      return *this;
230
22.4M
    }
clang::ActionResult<clang::Stmt*, true>::operator=(clang::Stmt*)
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225
23
    const ActionResult &operator=(PtrTy RHS) {
226
23
      void *VP = PtrTraits::getAsVoidPointer(RHS);
227
23
      PtrWithInvalid = reinterpret_cast<uintptr_t>(VP);
228
23
      assert((PtrWithInvalid & 0x01) == 0 && "Badly aligned pointer");
229
23
      return *this;
230
23
    }
231
232
    // For types where we can fit a flag in with the pointer, provide
233
    // conversions to/from pointer type.
234
620k
    static ActionResult getFromOpaquePointer(void *P) {
235
620k
      ActionResult Result;
236
620k
      Result.PtrWithInvalid = (uintptr_t)P;
237
620k
      return Result;
238
620k
    }
239
620k
    void *getAsOpaquePointer() const { return (void*)PtrWithInvalid; }
240
  };
241
242
  /// An opaque type for threading parsed type information through the
243
  /// parser.
244
  using ParsedType = OpaquePtr<QualType>;
245
  using UnionParsedType = UnionOpaquePtr<QualType>;
246
247
  // We can re-use the low bit of expression, statement, base, and
248
  // member-initializer pointers for the "invalid" flag of
249
  // ActionResult.
250
  template<> struct IsResultPtrLowBitFree<Expr*> {
251
    static const bool value = true;
252
  };
253
  template<> struct IsResultPtrLowBitFree<Stmt*> {
254
    static const bool value = true;
255
  };
256
  template<> struct IsResultPtrLowBitFree<CXXBaseSpecifier*> {
257
    static const bool value = true;
258
  };
259
  template<> struct IsResultPtrLowBitFree<CXXCtorInitializer*> {
260
    static const bool value = true;
261
  };
262
263
  using ExprResult = ActionResult<Expr *>;
264
  using StmtResult = ActionResult<Stmt *>;
265
  using TypeResult = ActionResult<ParsedType>;
266
  using BaseResult = ActionResult<CXXBaseSpecifier *>;
267
  using MemInitResult = ActionResult<CXXCtorInitializer *>;
268
269
  using DeclResult = ActionResult<Decl *>;
270
  using ParsedTemplateTy = OpaquePtr<TemplateName>;
271
  using UnionParsedTemplateTy = UnionOpaquePtr<TemplateName>;
272
273
  using MultiExprArg = MutableArrayRef<Expr *>;
274
  using MultiStmtArg = MutableArrayRef<Stmt *>;
275
  using ASTTemplateArgsPtr = MutableArrayRef<ParsedTemplateArgument>;
276
  using MultiTypeArg = MutableArrayRef<ParsedType>;
277
  using MultiTemplateParamsArg = MutableArrayRef<TemplateParameterList *>;
278
279
2.01M
  inline ExprResult ExprError() { return ExprResult(true); }
280
510k
  inline StmtResult StmtError() { return StmtResult(true); }
281
282
422
  inline ExprResult ExprError(const DiagnosticBuilder&) { return ExprError(); }
283
406
  inline StmtResult StmtError(const DiagnosticBuilder&) { return StmtError(); }
284
285
14.9M
  inline ExprResult ExprEmpty() { return ExprResult(false); }
286
68
  inline StmtResult StmtEmpty() { return StmtResult(false); }
287
288
0
  inline Expr *AssertSuccess(ExprResult R) {
289
0
    assert(!R.isInvalid() && "operation was asserted to never fail!");
290
0
    return R.get();
291
0
  }
292
293
0
  inline Stmt *AssertSuccess(StmtResult R) {
294
0
    assert(!R.isInvalid() && "operation was asserted to never fail!");
295
0
    return R.get();
296
0
  }
297
298
} // namespace clang
299
300
#endif // LLVM_CLANG_SEMA_OWNERSHIP_H