property.cc 2.46 KB
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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
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#include "src/property.h"
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#include "src/handles-inl.h"
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#include "src/ostreams.h"
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namespace v8 {
namespace internal {
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std::ostream& operator<<(std::ostream& os,
                         const PropertyAttributes& attributes) {
  os << "[";
  os << (((attributes & READ_ONLY) == 0) ? "W" : "_");    // writable
  os << (((attributes & DONT_ENUM) == 0) ? "E" : "_");    // enumerable
  os << (((attributes & DONT_DELETE) == 0) ? "C" : "_");  // configurable
  os << "]";
  return os;
}


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struct FastPropertyDetails {
  explicit FastPropertyDetails(const PropertyDetails& v) : details(v) {}
  const PropertyDetails details;
};


// Outputs PropertyDetails as a dictionary details.
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std::ostream& operator<<(std::ostream& os, const PropertyDetails& details) {
  os << "(";
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  if (details.location() == kDescriptor) {
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    os << "immutable ";
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  }
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  os << (details.kind() == kData ? "data" : "accessor");
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  return os << ", dictionary_index: " << details.dictionary_index()
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            << ", attrs: " << details.attributes() << ")";
}


// Outputs PropertyDetails as a descriptor array details.
std::ostream& operator<<(std::ostream& os,
                         const FastPropertyDetails& details_fast) {
  const PropertyDetails& details = details_fast.details;
  os << "(";
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  if (details.location() == kDescriptor) {
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    os << "immutable ";
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  }
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  os << (details.kind() == kData ? "data" : "accessor");
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  os << ": " << details.representation().Mnemonic();
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  if (details.location() == kField) {
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    os << ", field_index: " << details.field_index();
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  }
  return os << ", p: " << details.pointer()
            << ", attrs: " << details.attributes() << ")";
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}


#ifdef OBJECT_PRINT
void PropertyDetails::Print(bool dictionary_mode) {
  OFStream os(stdout);
  if (dictionary_mode) {
    os << *this;
  } else {
    os << FastPropertyDetails(*this);
  }
  os << "\n" << std::flush;
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}
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#endif
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std::ostream& operator<<(std::ostream& os, const Descriptor& d) {
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  Object* value = *d.GetValue();
  os << "Descriptor " << Brief(*d.GetKey()) << " @ " << Brief(value) << " ";
  if (value->IsAccessorPair()) {
    AccessorPair* pair = AccessorPair::cast(value);
    os << "(get: " << Brief(pair->getter())
       << ", set: " << Brief(pair->setter()) << ") ";
  }
  os << FastPropertyDetails(d.GetDetails());
  return os;
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}

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}  // namespace internal
}  // namespace v8