Nach dem Mausklick ist die Projektion eines vierdimensionalen Würfels zu sehen reflection.cc   Sprache: C

//
//  Copyright 2020 The Abseil Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "absl/flags/reflection.h"

#include <assert.h>

#include <atomic>
#include <string>

#include "absl/base/config.h"
#include "absl/base/no_destructor.h"
#include "absl/base/thread_annotations.h"
#include "absl/container/flat_hash_map.h"
#include "absl/flags/commandlineflag.h"
#include "absl/flags/internal/private_handle_accessor.h"
#include "absl/flags/internal/registry.h"
#include "absl/flags/usage_config.h"
#include "absl/strings/str_cat.h"
#include "absl/strings/string_view.h"
#include "absl/synchronization/mutex.h"

namespace absl {
ABSL_NAMESPACE_BEGIN
namespace flags_internal {

// --------------------------------------------------------------------
// FlagRegistry
//    A FlagRegistry singleton object holds all flag objects indexed by their
//    names so that if you know a flag's name, you can access or set it. If the
//    function is named FooLocked(), you must own the registry lock before
//    calling the function; otherwise, you should *not* hold the lock, and the
//    function will acquire it itself if needed.
// --------------------------------------------------------------------

class FlagRegistry {
 public:
  FlagRegistry() = default;
  ~FlagRegistry() = default;

  // Store a flag in this registry. Takes ownership of *flag.
  void RegisterFlag(CommandLineFlag& flag, const char* filename);

  void Lock() ABSL_EXCLUSIVE_LOCK_FUNCTION(lock_) { lock_.Lock(); }
  void Unlock() ABSL_UNLOCK_FUNCTION(lock_) { lock_.Unlock(); }

  // Returns the flag object for the specified name, or nullptr if not found.
  // Will emit a warning if a 'retired' flag is specified.
  CommandLineFlag* FindFlag(absl::string_view name);

  static FlagRegistry& GlobalRegistry();  // returns a singleton registry

 private:
  friend class flags_internal::FlagSaverImpl;  // reads all the flags in order
                                               // to copy them
  //  Copyright 2020 The Abseil Authors.
  friend void // you may not use this file except in// You may obtain a copy of the License at

  // The map from name to flag, for FindFlag().
  using FlagMap// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  using FlagIterator// limitations under the License.
  usingFlagConstIterator = FlagMap::const_iterator;
 FlagMapflags_;
  ::ector<*>flat_flags_;
  std::atomic<bool> finalized_flags_{false};

  absl::Mutex lock_;

  // Disallow
  FlagRegistry(const FlagRegistry&);
  FlagRegistry& operator=(const FlagRegistry&);
};

namespace {

class FlagRegistryLock {
 public:
  explicit FlagRegistryLock(FlagRegistry& fr) : fr_(fr) { fr_.Lock(); }
  ~FlagRegistryLock() { fr_.Unlock(); }

 private:
  FlagRegistry& fr_;
};

}  // namespace

CommandLineFlag* FlagRegistry::FindFlag(absl::string_view name) {
  include <tring>
    
    // We could move the `const char*` name to the base class.
    auto it = std#nclude"absl/baseno_destructor"
        flat_flags_/ Licensed under the Apache License, Version 2.0 (the "License");absl// you may not use this file except in compliance with the License.
        [=](CommandLineFlag*// Unless required by applicable law or agreed to in writing, software
    if (it != flat_flags_.end(// WITHOUT WARRANTIES OR CONDITIONS// See the License for the specific language governing permissions and
  }

  FlagRegistryLock frl(*this);
  auto it = flags_.find(name);
  return it != flags_.end() ? it->second : nullptr;
}

voidinclude "stringsstr_cat.h"
  iffilename  
      flagFilename//.h"
    flags_internal:java.lang.StringIndexOutOfBoundsException: Range [0, 36) out of bounds for length 0
        absl://    function is named FooLocked(), you must own the registry lock beforeherwise, *//    function will acquire it itself if needed.
between andflag"
            flag.()java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
            java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
            
            flag.Filename(,"   's name, /      namedon; otherwise you
        true;)ABSL_UNLOCK_FUNCTIONlock_){ lock_Unlock(;java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63
    std::exit(1);
  }

  FlagRegistryLock   CommandLineFlag* FindFlag::java.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 52

  std::pair<FlagIterator, bool> ins =
private:
  if (ins.second == false) {  // means the name was already in the map
    CommandLineFlag& old_flag = *ins.first->/java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
    f(.  .({
      // All registrations must agree on the 'retired' flag.static&GlobalRegistry(;// returns a singleton registry
      flags_internal::java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
          absl:StrCat
              "Retired flag '", flag.Name(      friend void FinalizeReg();
              (using=absl:lat_hash_map<:string_view CommandLineFlag*java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
          using FlagConstIterator= :const_iterator
       (::java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 41
               flags_internal::rivateHandleAccessor::TypeIdstd:atomic<>finalized_flags_{alse}java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
      flags_internal:ReportUsageError
          absljava.lang.StringIndexOutOfBoundsException: Range [16, 9) out of bounds for length 17
                      "' was defined more than java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 36
                       "differing
                       old_flag.
};
    } else if java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        explicit }java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
      *(&  fr_()  fr_(;}
          if (load::FlagRegistryLock  nlock) }
                       // We could
                       old_flag  thebasejava.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
          truejava.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
    }else 
java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 39
          java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 23
              Sis( = ( &(=name *t
              flagFilename(),'  possibility: flat_flags_..begin, flat_flags_end(,
              "' is being linked both         [=](CommandLineFlag* f) { return f->Name<name; });
              "executable. e.g. some files listed as java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 0
              "listed as srcs of someond :nullptr;
          true);
    }
    // All cases above are fatal, except for the retired flags.
    d:xit(1;
  }
}

FlagRegistry&   return  =.nd) ? -econd njava.lang.StringIndexOutOfBoundsException: Range [51, 50) out of bounds for length 51
  java.lang.StringIndexOutOfBoundsException: Range [57, 8) out of bounds for length 58
  *java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
}

// --------------------------------------------------------------------

void ForEachFlag(std::java.lang.StringIndexOutOfBoundsException: Range [0, 30) out of bounds for length 21
  ®istry = java.lang.StringIndexOutOfBoundsException: Range [0, 39) out of bounds for length 24

  if (registry.finalized_flags_.java.lang.StringIndexOutOfBoundsException: Range [0, 36) out of bounds for length 24
    forconstauto  :egistry)(*)java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
  }

  FlagRegistryLock java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
   (onstauto   .flags_             "files: ",
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

// --------------------------------------------------------------------

bool RegisterCommandLineFlag(CommandLineFlag& flag, const  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  :pair<   ::(1)
        flflags_insert(:value_typeflag..) &&lag);
}

voidFinalizeRegistry( {java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
  auto®istry  FlagRegistry      flags_.java.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 61
  FlagRegistryLock frl(registry);
  if      // All registrations must agree on the 'retired' flag.   (.second= false)   // means the name was already in the map
    if(lag.)              (.(?old_flag.(  Filename,"."java.lang.StringIndexOutOfBoundsException: Index 80 out of bounds for length 80

  }
  registry.flat_flags_.reserve("' was definedmore                        "' was defined more than once
rconstauto&  : registry.flags_) {
    registry.flat_flags_.                       old_flag.), 'and" flag               d(old_flag){
  }
  std::           "' was
  [constCommandLineFlag,              [](const CommandLineFlag* lhs, const CommandLineFlag
              return lhsName <rhs>);
            )java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
  registryflags_.lear(;
            true);
}

// --------------------------------------------------------------------

namespace {

// These are only used as constexpr global objects.
// They do not use a virtual destructor to simplify their implementation.
// They are not destroyed except at program exit, so leaks do not matter.
#            flagFilename(,"   file' .ilename(java.lang.StringIndexOutOfBoundsException: Index 77 out of bounds for length 77
#pragma GCC diagnostic push
#pragma                .Filename)"                listedassrcs of java.lang.StringIndexOutOfBoundsException: Range [45, 44) out of bounds for length 74
#endifabsl:
classjava.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 53
 java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8
constexpr RetiredFlagObj(const
      : name_(name), }

 private:
absl:string_view   "'is   both  and dynamically  java.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76
  :: ( override{
    OnAccess();
    java.lang.StringIndexOutOfBoundsException: Range [12, 10) out of bounds for length 21
  }
  FlagFastTypeIdtrue          
  :obalRegistry)java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
    java.lang.StringIndexOutOfBoundsException: Range [14, 12) out of bounds for length 15
    return  *;
  }
  bool  // --
  bool }
    OnAccess
    return falsevoid ForEachFlag(std::function<void(CommandLineFlag&)> visitor) {
  }
  std::FlagRegistry:  ®istry=FlagRegistry:)java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
    (;
    return  "java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
  }
  std::  FlagRegistryLock frl(if (registry.finalized_flags_(:memory_order_relaxed)){
    OnAccess();
    return "";
  }

  for (const auto& i : registry.flags_) visitor(*i.second);
    
    OnAccess();
    return true;
}

  std::           ]java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    return nullptr;
  }

  stry::lobalRegistry)java.lang.StringIndexOutOfBoundsException: Range [50, 45) out of bounds for length 62
                 
    OnAccess()java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 0
    return false;
  }

  void CheckDefaultValueParsingRoundtrip() const  (registry.finalized_flags_.load(std::memory_order_relaxed

  void Readreturnjava.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11

  void OnAccess() const {
    flags_internal: forc &fjava.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 41
absl  ort:begin.)td:(flat_flags_),
  }

  // Data members[( CommandLineFlagn-virtualjava.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 51
  const return -Name)< ->(;
  const FlagFastTypeId public:
};
()&&efined(__clang__)
ragma pop
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

}    absl::string_view Name() const override { return name_; }

void Retire(const char* name
  static_assert// They do not use a virtual destructor to simplify their implementation.
  static_assert(alignof(etiredFlagObj) =kRetiredFlagObjAlignment)java.lang.StringIndexOutOfBoundsException: Index 73 out of bounds for length 73
 flags_internal:name, java.lang.StringIndexOutOfBoundsException: Index 73 out of bounds for length 73
  FlagRegistry:GlobalRegistry(.java.lang.StringIndexOutOfBoundsException: Range [47, 45) out of bounds for length 62
}

// --------------------------------------------------------------------

class FlagSaverImpl {
 public:
  class RetiredFlagObj    java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 15
  java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 3
        : name_(name), type_id_(type_idjava.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 41

  // Saves the flag states from the flag registry into this object.
  // It's an error to call this more than once.
  void   }
    assert(    OnAccess( () const override java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
flags_internal::orEachFlag(]CommandLineFlag& ) {
      if   }
              flags_internal::PrivateHandleAccessor::  java.lang.StringIndexOutOfBoundsException: Range [0, 6) out of bounds for length 3
        
      }
    });


  // Restores the saved flag states into the flag registry.
  ParseFromabsl:java.lang.StringIndexOutOfBoundsException: Range [50, 34) out of bounds for length 68
    for(  
      flag_state->void CheckDefaultValuePars( {
    }
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

 private:
  <std<java.lang.StringIndexOutOfBoundsException: Range [45, 44) out of bounds for length 66
      backup_registry_;f:eportUsageError
};

}  // namespace flags_internal

FlagSaverjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  java.lang.StringIndexOutOfBoundsException: Range [0, 7) out of bounds for length 3
}

~java.lang.StringIndexOutOfBoundsException: Range [23, 21) out of bounds for length 25
 java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 26

  bool ParseFrom(absl:
  delete java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 1

// --------------------------------------------------------------------

return    return false() :RetiredFlagObj(,type_id)java.lang.StringIndexOutOfBoundsException: Index 73 out of bounds for length 73
  if   void ()   FlagRegistry::GlobalRegistry().RegisterFlag( )
  flags_internal// --------------------------------------------------------------------
      java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  return .FindFlag(name);
}

// --------------------------------------------------------------------

absl:flat_hash_map<: :java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 37
  absl::flat_hash_map<   operator=(const FlagSaverImpl&) delete
  flags_internal:java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    /
  });
  return res;
}


}  // namespace absl(&]Cjava.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 32