include/llvm/TextAPI/MachO/InterfaceFile.h

   1 //===- llvm/TextAPI/MachO/IntefaceFile.h - TAPI Interface File --*- 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 // A generic and abstract interface representation for linkable objects. This
  10 // could be an MachO executable, bundle, dylib, or text-based stub file.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_TEXTAPI_MACHO_INTERFACE_FILE_H
  15 #define LLVM_TEXTAPI_MACHO_INTERFACE_FILE_H
  16
  17 #include "llvm/ADT/BitmaskEnum.h"
  18 #include "llvm/ADT/DenseMap.h"
  19 #include "llvm/ADT/Hashing.h"
  20 #include "llvm/ADT/StringRef.h"
  21 #include "llvm/ADT/iterator.h"
  22 #include "llvm/BinaryFormat/MachO.h"
  23 #include "llvm/BinaryFormat/Magic.h"
  24 #include "llvm/Support/Allocator.h"
  25 #include "llvm/Support/Error.h"
  26 #include "llvm/TextAPI/MachO/Architecture.h"
  27 #include "llvm/TextAPI/MachO/ArchitectureSet.h"
  28 #include "llvm/TextAPI/MachO/PackedVersion.h"
  29 #include "llvm/TextAPI/MachO/Symbol.h"
  30
  31 namespace llvm {
  32 namespace MachO {
  33
  34 /// Defines the list of MachO platforms.
  35 enum class PlatformKind : unsigned {
  36   unknown,
  37   macOS = MachO::PLATFORM_MACOS,
  38   iOS = MachO::PLATFORM_IOS,
  39   tvOS = MachO::PLATFORM_TVOS,
  40   watchOS = MachO::PLATFORM_WATCHOS,
  41   bridgeOS = MachO::PLATFORM_BRIDGEOS,
  42 };
  43
  44 /// Defines a list of Objective-C constraints.
  45 enum class ObjCConstraintType : unsigned {
  46   /// No constraint.
  47   None = 0,
  48
  49   /// Retain/Release.
  50   Retain_Release = 1,
  51
  52   /// Retain/Release for Simulator.
  53   Retain_Release_For_Simulator = 2,
  54
  55   /// Retain/Release or Garbage Collection.
  56   Retain_Release_Or_GC = 3,
  57
  58   /// Garbage Collection.
  59   GC = 4,
  60 };
  61
  62 // clang-format off
  63
  64 /// Defines the file type this file represents.
  65 enum FileType : unsigned {
  66   /// Invalid file type.
  67   Invalid = 0U,
  68
  69   /// Text-based stub file (.tbd) version 1.0
  70   TBD_V1  = 1U <<  0,
  71
  72   /// Text-based stub file (.tbd) version 2.0
  73   TBD_V2  = 1U <<  1,
  74
  75   /// Text-based stub file (.tbd) version 3.0
  76   TBD_V3  = 1U <<  2,
  77
  78   All     = ~0U,
  79
  80   LLVM_MARK_AS_BITMASK_ENUM(/*LargestValue=*/All),
  81 };
  82
  83 // clang-format on
  84
  85 /// Reference to an interface file.
  86 class InterfaceFileRef {
  87 public:
  88   InterfaceFileRef() = default;
  89
  90   InterfaceFileRef(StringRef InstallName) : InstallName(InstallName) {}
  91
  92   InterfaceFileRef(StringRef InstallName, ArchitectureSet Archs)
  93       : InstallName(InstallName), Architectures(Archs) {}
  94
  95   StringRef getInstallName() const { return InstallName; };
  96   void addArchitectures(ArchitectureSet Archs) { Architectures |= Archs; }
  97   ArchitectureSet getArchitectures() const { return Architectures; }
  98   bool hasArchitecture(Architecture Arch) const {
  99     return Architectures.has(Arch);
 100   }
 101
 102   bool operator==(const InterfaceFileRef &O) const {
 103     return std::tie(InstallName, Architectures) ==
 104            std::tie(O.InstallName, O.Architectures);
 105   }
 106
 107   bool operator<(const InterfaceFileRef &O) const {
 108     return std::tie(InstallName, Architectures) <
 109            std::tie(O.InstallName, O.Architectures);
 110   }
 111
 112 private:
 113   std::string InstallName;
 114   ArchitectureSet Architectures;
 115 };
 116
 117 } // end namespace MachO.
 118
 119 struct SymbolsMapKey {
 120   MachO::SymbolKind Kind;
 121   StringRef Name;
 122
 123   SymbolsMapKey(MachO::SymbolKind Kind, StringRef Name)
 124       : Kind(Kind), Name(Name) {}
 125 };
 126 template <> struct DenseMapInfo<SymbolsMapKey> {
 127   static inline SymbolsMapKey getEmptyKey() {
 128     return SymbolsMapKey(MachO::SymbolKind::GlobalSymbol, StringRef{});
 129   }
 130
 131   static inline SymbolsMapKey getTombstoneKey() {
 132     return SymbolsMapKey(MachO::SymbolKind::ObjectiveCInstanceVariable,
 133                          StringRef{});
 134   }
 135
 136   static unsigned getHashValue(const SymbolsMapKey &Key) {
 137     return hash_combine(hash_value(Key.Kind), hash_value(Key.Name));
 138   }
 139
 140   static bool isEqual(const SymbolsMapKey &LHS, const SymbolsMapKey &RHS) {
 141     return std::tie(LHS.Kind, LHS.Name) == std::tie(RHS.Kind, RHS.Name);
 142   }
 143 };
 144
 145 namespace MachO {
 146
 147 /// Defines the interface file.
 148 class InterfaceFile {
 149 public:
 150   /// Set the path from which this file was generated (if applicable).
 151   ///
 152   /// \param Path_ The path to the source file.
 153   void setPath(StringRef Path_) { Path = Path_; }
 154
 155   /// Get the path from which this file was generated (if applicable).
 156   ///
 157   /// \return The path to the source file or empty.
 158   StringRef getPath() const { return Path; }
 159
 160   /// Set the file type.
 161   ///
 162   /// This is used by the YAML writer to identify the specification it should
 163   /// use for writing the file.
 164   ///
 165   /// \param Kind The file type.
 166   void setFileType(FileType Kind) { FileKind = Kind; }
 167
 168   /// Get the file type.
 169   ///
 170   /// \return The file type.
 171   FileType getFileType() const { return FileKind; }
 172
 173   /// Set the platform.
 174   void setPlatform(PlatformKind Platform_) { Platform = Platform_; }
 175
 176   /// Get the platform.
 177   PlatformKind getPlatform() const { return Platform; }
 178
 179   /// Specify the set of supported architectures by this file.
 180   void setArchitectures(ArchitectureSet Architectures_) {
 181     Architectures = Architectures_;
 182   }
 183
 184   /// Add the set of supported architectures by this file.
 185   void addArchitectures(ArchitectureSet Architectures_) {
 186     Architectures |= Architectures_;
 187   }
 188
 189   /// Add supported architecture by this file..
 190   void addArch(Architecture Arch) { Architectures.set(Arch); }
 191
 192   /// Get the set of supported architectures.
 193   ArchitectureSet getArchitectures() const { return Architectures; }
 194
 195   /// Set the install name of the library.
 196   void setInstallName(StringRef InstallName_) { InstallName = InstallName_; }
 197
 198   /// Get the install name of the library.
 199   StringRef getInstallName() const { return InstallName; }
 200
 201   /// Set the current version of the library.
 202   void setCurrentVersion(PackedVersion Version) { CurrentVersion = Version; }
 203
 204   /// Get the current version of the library.
 205   PackedVersion getCurrentVersion() const { return CurrentVersion; }
 206
 207   /// Set the compatibility version of the library.
 208   void setCompatibilityVersion(PackedVersion Version) {
 209     CompatibilityVersion = Version;
 210   }
 211
 212   /// Get the compatibility version of the library.
 213   PackedVersion getCompatibilityVersion() const { return CompatibilityVersion; }
 214
 215   /// Set the Swift ABI version of the library.
 216   void setSwiftABIVersion(uint8_t Version) { SwiftABIVersion = Version; }
 217
 218   /// Get the Swift ABI version of the library.
 219   uint8_t getSwiftABIVersion() const { return SwiftABIVersion; }
 220
 221   /// Specify if the library uses two-level namespace (or flat namespace).
 222   void setTwoLevelNamespace(bool V = true) { IsTwoLevelNamespace = V; }
 223
 224   /// Check if the library uses two-level namespace.
 225   bool isTwoLevelNamespace() const { return IsTwoLevelNamespace; }
 226
 227   /// Specify if the library is application extension safe (or not).
 228   void setApplicationExtensionSafe(bool V = true) { IsAppExtensionSafe = V; }
 229
 230   /// Check if the library is application extension safe.
 231   bool isApplicationExtensionSafe() const { return IsAppExtensionSafe; }
 232
 233   /// Set the Objective-C constraint.
 234   void setObjCConstraint(ObjCConstraintType Constraint) {
 235     ObjcConstraint = Constraint;
 236   }
 237
 238   /// Get the Objective-C constraint.
 239   ObjCConstraintType getObjCConstraint() const { return ObjcConstraint; }
 240
 241   /// Specify if this file was generated during InstallAPI (or not).
 242   void setInstallAPI(bool V = true) { IsInstallAPI = V; }
 243
 244   /// Check if this file was generated during InstallAPI.
 245   bool isInstallAPI() const { return IsInstallAPI; }
 246
 247   /// Set the parent umbrella framework.
 248   void setParentUmbrella(StringRef Parent) { ParentUmbrella = Parent; }
 249
 250   /// Get the parent umbrella framework.
 251   StringRef getParentUmbrella() const { return ParentUmbrella; }
 252
 253   /// Add an allowable client.
 254   ///
 255   /// Mach-O Dynamic libraries have the concept of allowable clients that are
 256   /// checked during static link time. The name of the application or library
 257   /// that is being generated needs to match one of the allowable clients or the
 258   /// linker refuses to link this library.
 259   ///
 260   /// \param Name The name of the client that is allowed to link this library.
 261   /// \param Architectures The set of architecture for which this applies.
 262   void addAllowableClient(StringRef Name, ArchitectureSet Architectures);
 263
 264   /// Get the list of allowable clients.
 265   ///
 266   /// \return Returns a list of allowable clients.
 267   const std::vector<InterfaceFileRef> &allowableClients() const {
 268     return AllowableClients;
 269   }
 270
 271   /// Add a re-exported library.
 272   ///
 273   /// \param InstallName The name of the library to re-export.
 274   /// \param Architectures The set of architecture for which this applies.
 275   void addReexportedLibrary(StringRef InstallName,
 276                             ArchitectureSet Architectures);
 277
 278   /// Get the list of re-exported libraries.
 279   ///
 280   /// \return Returns a list of re-exported libraries.
 281   const std::vector<InterfaceFileRef> &reexportedLibraries() const {
 282     return ReexportedLibraries;
 283   }
 284
 285   /// Add an architecture/UUID pair.
 286   ///
 287   /// \param Arch The architecture for which this applies.
 288   /// \param UUID The UUID of the library for the specified architecture.
 289   void addUUID(Architecture Arch, StringRef UUID);
 290
 291   /// Add an architecture/UUID pair.
 292   ///
 293   /// \param Arch The architecture for which this applies.
 294   /// \param UUID The UUID of the library for the specified architecture.
 295   void addUUID(Architecture Arch, uint8_t UUID[16]);
 296
 297   /// Get the list of architecture/UUID pairs.
 298   ///
 299   /// \return Returns a list of architecture/UUID pairs.
 300   const std::vector<std::pair<Architecture, std::string>> &uuids() const {
 301     return UUIDs;
 302   }
 303
 304   /// Add a symbol to the symbols list or extend an existing one.
 305   void addSymbol(SymbolKind Kind, StringRef Name, ArchitectureSet Architectures,
 306                  SymbolFlags Flags = SymbolFlags::None);
 307
 308   using SymbolMapType = DenseMap<SymbolsMapKey, Symbol *>;
 309   struct const_symbol_iterator
 310       : public iterator_adaptor_base<
 311             const_symbol_iterator, SymbolMapType::const_iterator,
 312             std::forward_iterator_tag, const Symbol *, ptrdiff_t,
 313             const Symbol *, const Symbol *> {
 314     const_symbol_iterator() = default;
 315
 316     template <typename U>
 317     const_symbol_iterator(U &&u)
 318         : iterator_adaptor_base(std::forward<U &&>(u)) {}
 319
 320     reference operator*() const { return I->second; }
 321     pointer operator->() const { return I->second; }
 322   };
 323
 324   using const_symbol_range = iterator_range<const_symbol_iterator>;
 325
 326   using const_filtered_symbol_iterator =
 327       filter_iterator<const_symbol_iterator,
 328                       std::function<bool(const Symbol *)>>;
 329   using const_filtered_symbol_range =
 330       iterator_range<const_filtered_symbol_iterator>;
 331
 332   const_symbol_range symbols() const {
 333     return {Symbols.begin(), Symbols.end()};
 334   }
 335
 336   const_filtered_symbol_range exports() const {
 337     std::function<bool(const Symbol *)> fn = [](const Symbol *Symbol) {
 338       return !Symbol->isUndefined();
 339     };
 340     return make_filter_range(
 341         make_range<const_symbol_iterator>({Symbols.begin()}, {Symbols.end()}),
 342         fn);
 343   }
 344
 345   const_filtered_symbol_range undefineds() const {
 346     std::function<bool(const Symbol *)> fn = [](const Symbol *Symbol) {
 347       return Symbol->isUndefined();
 348     };
 349     return make_filter_range(
 350         make_range<const_symbol_iterator>({Symbols.begin()}, {Symbols.end()}),
 351         fn);
 352   }
 353
 354 private:
 355   llvm::BumpPtrAllocator Allocator;
 356   StringRef copyString(StringRef String) {
 357     if (String.empty())
 358       return {};
 359
 360     void *Ptr = Allocator.Allocate(String.size(), 1);
 361     memcpy(Ptr, String.data(), String.size());
 362     return StringRef(reinterpret_cast<const char *>(Ptr), String.size());
 363   }
 364
 365   std::string Path;
 366   FileType FileKind;
 367   PlatformKind Platform;
 368   ArchitectureSet Architectures;
 369   std::string InstallName;
 370   PackedVersion CurrentVersion;
 371   PackedVersion CompatibilityVersion;
 372   uint8_t SwiftABIVersion{0};
 373   bool IsTwoLevelNamespace{false};
 374   bool IsAppExtensionSafe{false};
 375   bool IsInstallAPI{false};
 376   ObjCConstraintType ObjcConstraint = ObjCConstraintType::None;
 377   std::string ParentUmbrella;
 378   std::vector<InterfaceFileRef> AllowableClients;
 379   std::vector<InterfaceFileRef> ReexportedLibraries;
 380   std::vector<std::pair<Architecture, std::string>> UUIDs;
 381   SymbolMapType Symbols;
 382 };
 383
 384 } // end namespace MachO.
 385 } // end namespace llvm.
 386
 387 #endif // LLVM_TEXTAPI_MACHO_INTERFACE_FILE_H