Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	node_util.cc	Lines:	238	243	97.9 %
Date:	2022-06-06 04:15:48	Branches:	93	143	65.0 %


#include "base_object-inl.h"
#include "node_errors.h"
#include "node_external_reference.h"
#include "util-inl.h"

namespace node {
namespace util {

using v8::ALL_PROPERTIES;
using v8::Array;
using v8::ArrayBufferView;
using v8::BigInt;
using v8::Boolean;
using v8::Context;
using v8::External;
using v8::FunctionCallbackInfo;
using v8::FunctionTemplate;
using v8::Global;
using v8::IndexFilter;
using v8::Integer;
using v8::Isolate;
using v8::KeyCollectionMode;
using v8::Local;
using v8::Object;
using v8::ONLY_CONFIGURABLE;
using v8::ONLY_ENUMERABLE;
using v8::ONLY_WRITABLE;
using v8::Private;
using v8::Promise;
using v8::PropertyFilter;
using v8::Proxy;
using v8::SKIP_STRINGS;
using v8::SKIP_SYMBOLS;
using v8::String;
using v8::Uint32;
using v8::Value;

// Used in ToUSVString().
constexpr char16_t kUnicodeReplacementCharacter = 0xFFFD;

// If a UTF-16 character is a low/trailing surrogate.
CHAR_TEST(16, IsUnicodeTrail, (ch & 0xFC00) == 0xDC00)

// If a UTF-16 character is a surrogate.
CHAR_TEST(16, IsUnicodeSurrogate, (ch & 0xF800) == 0xD800)

// If a UTF-16 surrogate is a low/trailing one.
CHAR_TEST(16, IsUnicodeSurrogateTrail, (ch & 0x400) != 0)

static void GetOwnNonIndexProperties(
    const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);
  Local<Context> context = env->context();

  CHECK(args[0]->IsObject());
  CHECK(args[1]->IsUint32());

  Local<Object> object = args[0].As<Object>();

  Local<Array> properties;

  PropertyFilter filter =
    static_cast<PropertyFilter>(args[1].As<Uint32>()->Value());

  if (!object->GetPropertyNames(
        context, KeyCollectionMode::kOwnOnly,
        filter,
        IndexFilter::kSkipIndices)
          .ToLocal(&properties)) {
    return;
  }
  args.GetReturnValue().Set(properties);
}

static void GetConstructorName(
    const FunctionCallbackInfo<Value>& args) {
  CHECK(args[0]->IsObject());

  Local<Object> object = args[0].As<Object>();
  Local<String> name = object->GetConstructorName();

  args.GetReturnValue().Set(name);
}

static void GetExternalValue(
    const FunctionCallbackInfo<Value>& args) {
  CHECK(args[0]->IsExternal());
  Isolate* isolate = args.GetIsolate();
  Local<External> external = args[0].As<External>();

  void* ptr = external->Value();
  uint64_t value = reinterpret_cast<uint64_t>(ptr);
  Local<BigInt> ret = BigInt::NewFromUnsigned(isolate, value);
  args.GetReturnValue().Set(ret);
}

static void GetPromiseDetails(const FunctionCallbackInfo<Value>& args) {
  // Return undefined if it's not a Promise.
  if (!args[0]->IsPromise())
    return;

  auto isolate = args.GetIsolate();

  Local<Promise> promise = args[0].As<Promise>();

  int state = promise->State();
  Local<Value> values[2] = { Integer::New(isolate, state) };
  size_t number_of_values = 1;
  if (state != Promise::PromiseState::kPending)
    values[number_of_values++] = promise->Result();
  Local<Array> ret = Array::New(isolate, values, number_of_values);
  args.GetReturnValue().Set(ret);
}

static void GetProxyDetails(const FunctionCallbackInfo<Value>& args) {
  // Return undefined if it's not a proxy.
  if (!args[0]->IsProxy())
    return;

  Local<Proxy> proxy = args[0].As<Proxy>();

  // TODO(BridgeAR): Remove the length check as soon as we prohibit access to
  // the util binding layer. It's accessed in the wild and `esm` would break in
  // case the check is removed.
  if (args.Length() == 1 || args[1]->IsTrue()) {
    Local<Value> ret[] = {
      proxy->GetTarget(),
      proxy->GetHandler()
    };

    args.GetReturnValue().Set(
        Array::New(args.GetIsolate(), ret, arraysize(ret)));
  } else {
    Local<Value> ret = proxy->GetTarget();

    args.GetReturnValue().Set(ret);
  }
}

static void PreviewEntries(const FunctionCallbackInfo<Value>& args) {
  if (!args[0]->IsObject())
    return;

  Environment* env = Environment::GetCurrent(args);
  bool is_key_value;
  Local<Array> entries;
  if (!args[0].As<Object>()->PreviewEntries(&is_key_value).ToLocal(&entries))
    return;
  // Fast path for WeakMap and WeakSet.
  if (args.Length() == 1)
    return args.GetReturnValue().Set(entries);

  Local<Value> ret[] = {
    entries,
    Boolean::New(env->isolate(), is_key_value)
  };
  return args.GetReturnValue().Set(
      Array::New(env->isolate(), ret, arraysize(ret)));
}

inline Local<Private> IndexToPrivateSymbol(Environment* env, uint32_t index) {
#define V(name, _) &Environment::name,
  static Local<Private> (Environment::*const methods[])() const = {
    PER_ISOLATE_PRIVATE_SYMBOL_PROPERTIES(V)
  };
#undef V
  CHECK_LT(index, arraysize(methods));
  return (env->*methods[index])();
}

static void GetHiddenValue(const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);

  CHECK(args[0]->IsObject());
  CHECK(args[1]->IsUint32());

  Local<Object> obj = args[0].As<Object>();
  uint32_t index = args[1].As<Uint32>()->Value();
  Local<Private> private_symbol = IndexToPrivateSymbol(env, index);
  Local<Value> ret;
  if (obj->GetPrivate(env->context(), private_symbol).ToLocal(&ret))
    args.GetReturnValue().Set(ret);
}

static void SetHiddenValue(const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);

  CHECK(args[0]->IsObject());
  CHECK(args[1]->IsUint32());

  Local<Object> obj = args[0].As<Object>();
  uint32_t index = args[1].As<Uint32>()->Value();
  Local<Private> private_symbol = IndexToPrivateSymbol(env, index);
  bool ret;
  if (obj->SetPrivate(env->context(), private_symbol, args[2]).To(&ret))
    args.GetReturnValue().Set(ret);
}

static void Sleep(const FunctionCallbackInfo<Value>& args) {
  CHECK(args[0]->IsUint32());
  uint32_t msec = args[0].As<Uint32>()->Value();
  uv_sleep(msec);
}

void ArrayBufferViewHasBuffer(const FunctionCallbackInfo<Value>& args) {
  CHECK(args[0]->IsArrayBufferView());
  args.GetReturnValue().Set(args[0].As<ArrayBufferView>()->HasBuffer());
}

class WeakReference : public BaseObject {
 public:
  WeakReference(Environment* env, Local<Object> object, Local<Object> target)
    : BaseObject(env, object) {
    MakeWeak();
    target_.Reset(env->isolate(), target);
    target_.SetWeak();
  }

  static void New(const FunctionCallbackInfo<Value>& args) {
    Environment* env = Environment::GetCurrent(args);
    CHECK(args.IsConstructCall());
    CHECK(args[0]->IsObject());
    new WeakReference(env, args.This(), args[0].As<Object>());
  }

  static void Get(const FunctionCallbackInfo<Value>& args) {
    WeakReference* weak_ref = Unwrap<WeakReference>(args.Holder());
    Isolate* isolate = args.GetIsolate();
    if (!weak_ref->target_.IsEmpty())
      args.GetReturnValue().Set(weak_ref->target_.Get(isolate));
  }

  static void IncRef(const FunctionCallbackInfo<Value>& args) {
    WeakReference* weak_ref = Unwrap<WeakReference>(args.Holder());
    weak_ref->reference_count_++;
    if (weak_ref->target_.IsEmpty()) return;
    if (weak_ref->reference_count_ == 1) weak_ref->target_.ClearWeak();
  }

  static void DecRef(const FunctionCallbackInfo<Value>& args) {
    WeakReference* weak_ref = Unwrap<WeakReference>(args.Holder());
    CHECK_GE(weak_ref->reference_count_, 1);
    weak_ref->reference_count_--;
    if (weak_ref->target_.IsEmpty()) return;
    if (weak_ref->reference_count_ == 0) weak_ref->target_.SetWeak();
  }

  SET_MEMORY_INFO_NAME(WeakReference)
  SET_SELF_SIZE(WeakReference)
  SET_NO_MEMORY_INFO()

 private:
  Global<Object> target_;
  uint64_t reference_count_ = 0;
};

static void GuessHandleType(const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);
  int fd;
  if (!args[0]->Int32Value(env->context()).To(&fd)) return;
  CHECK_GE(fd, 0);

  uv_handle_type t = uv_guess_handle(fd);
  const char* type = nullptr;

  switch (t) {
    case UV_TCP:
      type = "TCP";
      break;
    case UV_TTY:
      type = "TTY";
      break;
    case UV_UDP:
      type = "UDP";
      break;
    case UV_FILE:
      type = "FILE";
      break;
    case UV_NAMED_PIPE:
      type = "PIPE";
      break;
    case UV_UNKNOWN_HANDLE:
      type = "UNKNOWN";
      break;
    default:
      ABORT();
  }

  args.GetReturnValue().Set(OneByteString(env->isolate(), type));
}

static void IsConstructor(const FunctionCallbackInfo<Value>& args) {
  CHECK(args[0]->IsFunction());
  args.GetReturnValue().Set(args[0].As<v8::Function>()->IsConstructor());
}

static void ToUSVString(const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);
  CHECK_GE(args.Length(), 2);
  CHECK(args[0]->IsString());
  CHECK(args[1]->IsNumber());

  TwoByteValue value(env->isolate(), args[0]);

  int64_t start = args[1]->IntegerValue(env->context()).FromJust();
  CHECK_GE(start, 0);

  for (size_t i = start; i < value.length(); i++) {
    char16_t c = value[i];
    if (!IsUnicodeSurrogate(c)) {
      continue;
    } else if (IsUnicodeSurrogateTrail(c) || i == value.length() - 1) {
      value[i] = kUnicodeReplacementCharacter;
    } else {
      char16_t d = value[i + 1];
      if (IsUnicodeTrail(d)) {
        i++;
      } else {
        value[i] = kUnicodeReplacementCharacter;
      }
    }
  }

  args.GetReturnValue().Set(
      String::NewFromTwoByte(env->isolate(),
                             *value,
                             v8::NewStringType::kNormal,
                             value.length()).ToLocalChecked());
}

void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
  registry->Register(GetHiddenValue);
  registry->Register(SetHiddenValue);
  registry->Register(GetPromiseDetails);
  registry->Register(GetProxyDetails);
  registry->Register(PreviewEntries);
  registry->Register(GetOwnNonIndexProperties);
  registry->Register(GetConstructorName);
  registry->Register(GetExternalValue);
  registry->Register(Sleep);
  registry->Register(ArrayBufferViewHasBuffer);
  registry->Register(WeakReference::New);
  registry->Register(WeakReference::Get);
  registry->Register(WeakReference::IncRef);
  registry->Register(WeakReference::DecRef);
  registry->Register(GuessHandleType);
  registry->Register(IsConstructor);
  registry->Register(ToUSVString);
}

void Initialize(Local<Object> target,
                Local<Value> unused,
                Local<Context> context,
                void* priv) {
  Environment* env = Environment::GetCurrent(context);

#define V(name, _)                                                            \
  target->Set(context,                                                        \
              FIXED_ONE_BYTE_STRING(env->isolate(), #name),                   \
              Integer::NewFromUnsigned(env->isolate(), index++)).Check();
  {
    uint32_t index = 0;
    PER_ISOLATE_PRIVATE_SYMBOL_PROPERTIES(V)
  }
#undef V

#define V(name)                                                               \
  target->Set(context,                                                        \
              FIXED_ONE_BYTE_STRING(env->isolate(), #name),                   \
              Integer::New(env->isolate(), Promise::PromiseState::name))      \
    .FromJust()
  V(kPending);
  V(kFulfilled);
  V(kRejected);
#undef V

  env->SetMethodNoSideEffect(target, "getHiddenValue", GetHiddenValue);
  env->SetMethod(target, "setHiddenValue", SetHiddenValue);
  env->SetMethodNoSideEffect(target, "getPromiseDetails", GetPromiseDetails);
  env->SetMethodNoSideEffect(target, "getProxyDetails", GetProxyDetails);
  env->SetMethodNoSideEffect(target, "previewEntries", PreviewEntries);
  env->SetMethodNoSideEffect(target, "getOwnNonIndexProperties",
                                     GetOwnNonIndexProperties);
  env->SetMethodNoSideEffect(target, "getConstructorName", GetConstructorName);
  env->SetMethodNoSideEffect(target, "getExternalValue", GetExternalValue);
  env->SetMethod(target, "sleep", Sleep);
  env->SetMethodNoSideEffect(target, "isConstructor", IsConstructor);

  env->SetMethod(target, "arrayBufferViewHasBuffer", ArrayBufferViewHasBuffer);
  Local<Object> constants = Object::New(env->isolate());
  NODE_DEFINE_CONSTANT(constants, ALL_PROPERTIES);
  NODE_DEFINE_CONSTANT(constants, ONLY_WRITABLE);
  NODE_DEFINE_CONSTANT(constants, ONLY_ENUMERABLE);
  NODE_DEFINE_CONSTANT(constants, ONLY_CONFIGURABLE);
  NODE_DEFINE_CONSTANT(constants, SKIP_STRINGS);
  NODE_DEFINE_CONSTANT(constants, SKIP_SYMBOLS);
  target->Set(context,
              FIXED_ONE_BYTE_STRING(env->isolate(), "propertyFilter"),
              constants).Check();

  Local<String> should_abort_on_uncaught_toggle =
      FIXED_ONE_BYTE_STRING(env->isolate(), "shouldAbortOnUncaughtToggle");
  CHECK(target
            ->Set(env->context(),
                  should_abort_on_uncaught_toggle,
                  env->should_abort_on_uncaught_toggle().GetJSArray())
            .FromJust());

  Local<FunctionTemplate> weak_ref =
      env->NewFunctionTemplate(WeakReference::New);
  weak_ref->InstanceTemplate()->SetInternalFieldCount(
      WeakReference::kInternalFieldCount);
  weak_ref->Inherit(BaseObject::GetConstructorTemplate(env));
  env->SetProtoMethod(weak_ref, "get", WeakReference::Get);
  env->SetProtoMethod(weak_ref, "incRef", WeakReference::IncRef);
  env->SetProtoMethod(weak_ref, "decRef", WeakReference::DecRef);
  env->SetConstructorFunction(target, "WeakReference", weak_ref);

  env->SetMethod(target, "guessHandleType", GuessHandleType);

  env->SetMethodNoSideEffect(target, "toUSVString", ToUSVString);
}

}  // namespace util
}  // namespace node

NODE_MODULE_CONTEXT_AWARE_INTERNAL(util, node::util::Initialize)
NODE_MODULE_EXTERNAL_REFERENCE(util, node::util::RegisterExternalReferences)


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			#include "base_object-inl.h"
2			#include "node_errors.h"
3			#include "node_external_reference.h"
4			#include "util-inl.h"
5
6			namespace node {
7			namespace util {
8
9			using v8::ALL_PROPERTIES;
10			using v8::Array;
11			using v8::ArrayBufferView;
12			using v8::BigInt;
13			using v8::Boolean;
14			using v8::Context;
15			using v8::External;
16			using v8::FunctionCallbackInfo;
17			using v8::FunctionTemplate;
18			using v8::Global;
19			using v8::IndexFilter;
20			using v8::Integer;
21			using v8::Isolate;
22			using v8::KeyCollectionMode;
23			using v8::Local;
24			using v8::Object;
25			using v8::ONLY_CONFIGURABLE;
26			using v8::ONLY_ENUMERABLE;
27			using v8::ONLY_WRITABLE;
28			using v8::Private;
29			using v8::Promise;
30			using v8::PropertyFilter;
31			using v8::Proxy;
32			using v8::SKIP_STRINGS;
33			using v8::SKIP_SYMBOLS;
34			using v8::String;
35			using v8::Uint32;
36			using v8::Value;
37
38			// Used in ToUSVString().
39			constexpr char16_t kUnicodeReplacementCharacter = 0xFFFD;
40
41			// If a UTF-16 character is a low/trailing surrogate.
42		3	CHAR_TEST(16, IsUnicodeTrail, (ch & 0xFC00) == 0xDC00)
43
44			// If a UTF-16 character is a surrogate.
45		32	CHAR_TEST(16, IsUnicodeSurrogate, (ch & 0xF800) == 0xD800)
46
47			// If a UTF-16 surrogate is a low/trailing one.
48		19	CHAR_TEST(16, IsUnicodeSurrogateTrail, (ch & 0x400) != 0)
49
50		144285	static void GetOwnNonIndexProperties(
51			const FunctionCallbackInfo<Value>& args) {
52		144285	Environment* env = Environment::GetCurrent(args);
53		144285	Local<Context> context = env->context();
54
55	✗✓	144285	CHECK(args[0]->IsObject());
56	✗✓	144285	CHECK(args[1]->IsUint32());
57
58	✓✗	288570	Local<Object> object = args[0].As<Object>();
59
60			Local<Array> properties;
61
62			PropertyFilter filter =
63		288570	static_cast<PropertyFilter>(args[1].As<Uint32>()->Value());
64
65		144285	if (!object->GetPropertyNames(
66			context, KeyCollectionMode::kOwnOnly,
67			filter,
68		144285	IndexFilter::kSkipIndices)
69	✓✓	144285	.ToLocal(&properties)) {
70		2	return;
71			}
72		288566	args.GetReturnValue().Set(properties);
73			}
74
75	✓✗	2192	static void GetConstructorName(
76			const FunctionCallbackInfo<Value>& args) {
77	✗✓	2192	CHECK(args[0]->IsObject());
78
79		4384	Local<Object> object = args[0].As<Object>();
80		2192	Local<String> name = object->GetConstructorName();
81
82		2192	args.GetReturnValue().Set(name);
83		2192	}
84
85	✓✗	44	static void GetExternalValue(
86			const FunctionCallbackInfo<Value>& args) {
87	✗✓	44	CHECK(args[0]->IsExternal());
88	✓✗	44	Isolate* isolate = args.GetIsolate();
89		88	Local<External> external = args[0].As<External>();
90
91		44	void* ptr = external->Value();
92		44	uint64_t value = reinterpret_cast<uint64_t>(ptr);
93		44	Local<BigInt> ret = BigInt::NewFromUnsigned(isolate, value);
94		44	args.GetReturnValue().Set(ret);
95		44	}
96
97	✓✗	1233	static void GetPromiseDetails(const FunctionCallbackInfo<Value>& args) {
98			// Return undefined if it's not a Promise.
99	✓✓	1233	if (!args[0]->IsPromise())
100		1	return;
101
102	✓✗	1232	auto isolate = args.GetIsolate();
103
104		2464	Local<Promise> promise = args[0].As<Promise>();
105
106		1232	int state = promise->State();
107	✓✓	3696	Local<Value> values[2] = { Integer::New(isolate, state) };
108		1232	size_t number_of_values = 1;
109	✓✓	1232	if (state != Promise::PromiseState::kPending)
110		1028	values[number_of_values++] = promise->Result();
111		1232	Local<Array> ret = Array::New(isolate, values, number_of_values);
112		2464	args.GetReturnValue().Set(ret);
113			}
114
115	✓✗	274421	static void GetProxyDetails(const FunctionCallbackInfo<Value>& args) {
116			// Return undefined if it's not a proxy.
117	✓✓	274421	if (!args[0]->IsProxy())
118		274304	return;
119
120		234	Local<Proxy> proxy = args[0].As<Proxy>();
121
122			// TODO(BridgeAR): Remove the length check as soon as we prohibit access to
123			// the util binding layer. It's accessed in the wild and `esm` would break in
124			// case the check is removed.
125	✓✓✓✓ ✓✓	233	if (args.Length() == 1 \|\| args[1]->IsTrue()) {
126			Local<Value> ret[] = {
127		46	proxy->GetTarget(),
128		46	proxy->GetHandler()
129		138	};
130
131		138	args.GetReturnValue().Set(
132			Array::New(args.GetIsolate(), ret, arraysize(ret)));
133			} else {
134		71	Local<Value> ret = proxy->GetTarget();
135
136		142	args.GetReturnValue().Set(ret);
137			}
138			}
139
140	✓✗	124	static void PreviewEntries(const FunctionCallbackInfo<Value>& args) {
141	✗✓	124	if (!args[0]->IsObject())
142			return;
143
144		124	Environment* env = Environment::GetCurrent(args);
145			bool is_key_value;
146			Local<Array> entries;
147	✗✓	372	if (!args[0].As<Object>()->PreviewEntries(&is_key_value).ToLocal(&entries))
148			return;
149			// Fast path for WeakMap and WeakSet.
150	✓✓	124	if (args.Length() == 1)
151		16	return args.GetReturnValue().Set(entries);
152
153			Local<Value> ret[] = {
154			entries,
155			Boolean::New(env->isolate(), is_key_value)
156		232	};
157		116	return args.GetReturnValue().Set(
158		116	Array::New(env->isolate(), ret, arraysize(ret)));
159			}
160
161		4972	inline Local<Private> IndexToPrivateSymbol(Environment* env, uint32_t index) {
162			#define V(name, _) &Environment::name,
163			static Local<Private> (Environment::*const methods[])() const = {
164			PER_ISOLATE_PRIVATE_SYMBOL_PROPERTIES(V)
165			};
166			#undef V
167	✗✓	4972	CHECK_LT(index, arraysize(methods));
168	✗✓	4972	return (env->*methods[index])();
169			}
170
171		179	static void GetHiddenValue(const FunctionCallbackInfo<Value>& args) {
172		179	Environment* env = Environment::GetCurrent(args);
173
174	✗✓	179	CHECK(args[0]->IsObject());
175	✗✓	179	CHECK(args[1]->IsUint32());
176
177	✓✗	358	Local<Object> obj = args[0].As<Object>();
178		537	uint32_t index = args[1].As<Uint32>()->Value();
179		179	Local<Private> private_symbol = IndexToPrivateSymbol(env, index);
180			Local<Value> ret;
181	✓✗	358	if (obj->GetPrivate(env->context(), private_symbol).ToLocal(&ret))
182		358	args.GetReturnValue().Set(ret);
183		179	}
184
185		4793	static void SetHiddenValue(const FunctionCallbackInfo<Value>& args) {
186		4793	Environment* env = Environment::GetCurrent(args);
187
188	✗✓	4793	CHECK(args[0]->IsObject());
189	✗✓	4793	CHECK(args[1]->IsUint32());
190
191	✓✗	9586	Local<Object> obj = args[0].As<Object>();
192		9586	uint32_t index = args[1].As<Uint32>()->Value();
193		4793	Local<Private> private_symbol = IndexToPrivateSymbol(env, index);
194			bool ret;
195	✓✗✓✗	14379	if (obj->SetPrivate(env->context(), private_symbol, args[2]).To(&ret))
196	✓✗	9586	args.GetReturnValue().Set(ret);
197		4793	}
198
199	✓✗	9	static void Sleep(const FunctionCallbackInfo<Value>& args) {
200	✗✓	9	CHECK(args[0]->IsUint32());
201		18	uint32_t msec = args[0].As<Uint32>()->Value();
202		9	uv_sleep(msec);
203		9	}
204
205	✓✗	56	void ArrayBufferViewHasBuffer(const FunctionCallbackInfo<Value>& args) {
206	✗✓	56	CHECK(args[0]->IsArrayBufferView());
207	✓✗✓✓	168	args.GetReturnValue().Set(args[0].As<ArrayBufferView>()->HasBuffer());
208		56	}
209
210			class WeakReference : public BaseObject {
211			public:
212		2517	WeakReference(Environment* env, Local<Object> object, Local<Object> target)
213		2517	: BaseObject(env, object) {
214		2517	MakeWeak();
215		2517	target_.Reset(env->isolate(), target);
216		2517	target_.SetWeak();
217		2517	}
218
219		2517	static void New(const FunctionCallbackInfo<Value>& args) {
220		2517	Environment* env = Environment::GetCurrent(args);
221	✗✓	2517	CHECK(args.IsConstructCall());
222	✗✓	2517	CHECK(args[0]->IsObject());
223	✓✗	7551	new WeakReference(env, args.This(), args[0].As<Object>());
224		2517	}
225
226		8511	static void Get(const FunctionCallbackInfo<Value>& args) {
227		8511	WeakReference* weak_ref = Unwrap<WeakReference>(args.Holder());
228		8511	Isolate* isolate = args.GetIsolate();
229	✓✓	8511	if (!weak_ref->target_.IsEmpty())
230	✗✓	17020	args.GetReturnValue().Set(weak_ref->target_.Get(isolate));
231		8511	}
232
233		4254	static void IncRef(const FunctionCallbackInfo<Value>& args) {
234		4254	WeakReference* weak_ref = Unwrap<WeakReference>(args.Holder());
235		4254	weak_ref->reference_count_++;
236	✗✓	4254	if (weak_ref->target_.IsEmpty()) return;
237	✓✓	4254	if (weak_ref->reference_count_ == 1) weak_ref->target_.ClearWeak();
238			}
239
240		4251	static void DecRef(const FunctionCallbackInfo<Value>& args) {
241		4251	WeakReference* weak_ref = Unwrap<WeakReference>(args.Holder());
242	✗✓	4251	CHECK_GE(weak_ref->reference_count_, 1);
243		4251	weak_ref->reference_count_--;
244	✗✓	4251	if (weak_ref->target_.IsEmpty()) return;
245	✓✓	4251	if (weak_ref->reference_count_ == 0) weak_ref->target_.SetWeak();
246			}
247
248		4	SET_MEMORY_INFO_NAME(WeakReference)
249		4	SET_SELF_SIZE(WeakReference)
250		4	SET_NO_MEMORY_INFO()
251
252			private:
253			Global<Object> target_;
254			uint64_t reference_count_ = 0;
255			};
256
257		5319	static void GuessHandleType(const FunctionCallbackInfo<Value>& args) {
258		5319	Environment* env = Environment::GetCurrent(args);
259			int fd;
260	✗✓	10638	if (!args[0]->Int32Value(env->context()).To(&fd)) return;
261	✗✓	5319	CHECK_GE(fd, 0);
262
263		5319	uv_handle_type t = uv_guess_handle(fd);
264		5319	const char* type = nullptr;
265
266	✓✓✓✓ ✓✓✗	5319	switch (t) {
267		4	case UV_TCP:
268		4	type = "TCP";
269		4	break;
270		36	case UV_TTY:
271		36	type = "TTY";
272		36	break;
273		6	case UV_UDP:
274		6	type = "UDP";
275		6	break;
276		2511	case UV_FILE:
277		2511	type = "FILE";
278		2511	break;
279		2757	case UV_NAMED_PIPE:
280		2757	type = "PIPE";
281		2757	break;
282		5	case UV_UNKNOWN_HANDLE:
283		5	type = "UNKNOWN";
284		5	break;
285			default:
286			ABORT();
287			}
288
289		10638	args.GetReturnValue().Set(OneByteString(env->isolate(), type));
290			}
291
292	✓✗	10	static void IsConstructor(const FunctionCallbackInfo<Value>& args) {
293	✗✓	10	CHECK(args[0]->IsFunction());
294	✓✗✓✓	30	args.GetReturnValue().Set(args[0].As<v8::Function>()->IsConstructor());
295		10	}
296
297		17	static void ToUSVString(const FunctionCallbackInfo<Value>& args) {
298		17	Environment* env = Environment::GetCurrent(args);
299	✗✓	17	CHECK_GE(args.Length(), 2);
300	✗✓	34	CHECK(args[0]->IsString());
301	✗✓	17	CHECK(args[1]->IsNumber());
302
303		17	TwoByteValue value(env->isolate(), args[0]);
304
305		17	int64_t start = args[1]->IntegerValue(env->context()).FromJust();
306	✗✓	17	CHECK_GE(start, 0);
307
308	✓✓	49	for (size_t i = start; i < value.length(); i++) {
309		32	char16_t c = value[i];
310	✓✓	32	if (!IsUnicodeSurrogate(c)) {
311		13	continue;
312	✓✓✓✓ ✓✓	19	} else if (IsUnicodeSurrogateTrail(c) \|\| i == value.length() - 1) {
313		16	value[i] = kUnicodeReplacementCharacter;
314			} else {
315		3	char16_t d = value[i + 1];
316	✗✓	3	if (IsUnicodeTrail(d)) {
317			i++;
318			} else {
319		3	value[i] = kUnicodeReplacementCharacter;
320			}
321			}
322			}
323
324		51	args.GetReturnValue().Set(
325		17	String::NewFromTwoByte(env->isolate(),
326		17	*value,
327			v8::NewStringType::kNormal,
328		17	value.length()).ToLocalChecked());
329		17	}
330
331		5206	void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
332		5206	registry->Register(GetHiddenValue);
333		5206	registry->Register(SetHiddenValue);
334		5206	registry->Register(GetPromiseDetails);
335		5206	registry->Register(GetProxyDetails);
336		5206	registry->Register(PreviewEntries);
337		5206	registry->Register(GetOwnNonIndexProperties);
338		5206	registry->Register(GetConstructorName);
339		5206	registry->Register(GetExternalValue);
340		5206	registry->Register(Sleep);
341		5206	registry->Register(ArrayBufferViewHasBuffer);
342		5206	registry->Register(WeakReference::New);
343		5206	registry->Register(WeakReference::Get);
344		5206	registry->Register(WeakReference::IncRef);
345		5206	registry->Register(WeakReference::DecRef);
346		5206	registry->Register(GuessHandleType);
347		5206	registry->Register(IsConstructor);
348		5206	registry->Register(ToUSVString);
349		5206	}
350
351		854	void Initialize(Local<Object> target,
352			Local<Value> unused,
353			Local<Context> context,
354			void* priv) {
355		854	Environment* env = Environment::GetCurrent(context);
356
357			#define V(name, _) \
358			target->Set(context, \
359			FIXED_ONE_BYTE_STRING(env->isolate(), #name), \
360			Integer::NewFromUnsigned(env->isolate(), index++)).Check();
361			{
362		854	uint32_t index = 0;
363		21350	PER_ISOLATE_PRIVATE_SYMBOL_PROPERTIES(V)
364			}
365			#undef V
366
367			#define V(name) \
368			target->Set(context, \
369			FIXED_ONE_BYTE_STRING(env->isolate(), #name), \
370			Integer::New(env->isolate(), Promise::PromiseState::name)) \
371			.FromJust()
372		3416	V(kPending);
373		3416	V(kFulfilled);
374		2562	V(kRejected);
375			#undef V
376
377		854	env->SetMethodNoSideEffect(target, "getHiddenValue", GetHiddenValue);
378		854	env->SetMethod(target, "setHiddenValue", SetHiddenValue);
379		854	env->SetMethodNoSideEffect(target, "getPromiseDetails", GetPromiseDetails);
380		854	env->SetMethodNoSideEffect(target, "getProxyDetails", GetProxyDetails);
381		854	env->SetMethodNoSideEffect(target, "previewEntries", PreviewEntries);
382		854	env->SetMethodNoSideEffect(target, "getOwnNonIndexProperties",
383			GetOwnNonIndexProperties);
384		854	env->SetMethodNoSideEffect(target, "getConstructorName", GetConstructorName);
385		854	env->SetMethodNoSideEffect(target, "getExternalValue", GetExternalValue);
386		854	env->SetMethod(target, "sleep", Sleep);
387		854	env->SetMethodNoSideEffect(target, "isConstructor", IsConstructor);
388
389		854	env->SetMethod(target, "arrayBufferViewHasBuffer", ArrayBufferViewHasBuffer);
390		854	Local<Object> constants = Object::New(env->isolate());
391		2562	NODE_DEFINE_CONSTANT(constants, ALL_PROPERTIES);
392		2562	NODE_DEFINE_CONSTANT(constants, ONLY_WRITABLE);
393		2562	NODE_DEFINE_CONSTANT(constants, ONLY_ENUMERABLE);
394		2562	NODE_DEFINE_CONSTANT(constants, ONLY_CONFIGURABLE);
395		2562	NODE_DEFINE_CONSTANT(constants, SKIP_STRINGS);
396		2562	NODE_DEFINE_CONSTANT(constants, SKIP_SYMBOLS);
397		854	target->Set(context,
398			FIXED_ONE_BYTE_STRING(env->isolate(), "propertyFilter"),
399		1708	constants).Check();
400
401			Local<String> should_abort_on_uncaught_toggle =
402		854	FIXED_ONE_BYTE_STRING(env->isolate(), "shouldAbortOnUncaughtToggle");
403	✗✓	2562	CHECK(target
404			->Set(env->context(),
405			should_abort_on_uncaught_toggle,
406			env->should_abort_on_uncaught_toggle().GetJSArray())
407			.FromJust());
408
409			Local<FunctionTemplate> weak_ref =
410		854	env->NewFunctionTemplate(WeakReference::New);
411		1708	weak_ref->InstanceTemplate()->SetInternalFieldCount(
412			WeakReference::kInternalFieldCount);
413		854	weak_ref->Inherit(BaseObject::GetConstructorTemplate(env));
414		854	env->SetProtoMethod(weak_ref, "get", WeakReference::Get);
415		854	env->SetProtoMethod(weak_ref, "incRef", WeakReference::IncRef);
416		854	env->SetProtoMethod(weak_ref, "decRef", WeakReference::DecRef);
417		854	env->SetConstructorFunction(target, "WeakReference", weak_ref);
418
419		854	env->SetMethod(target, "guessHandleType", GuessHandleType);
420
421		854	env->SetMethodNoSideEffect(target, "toUSVString", ToUSVString);
422		854	}
423
424			} // namespace util
425			} // namespace node
426
427		5274	NODE_MODULE_CONTEXT_AWARE_INTERNAL(util, node::util::Initialize)
428		5206	NODE_MODULE_EXTERNAL_REFERENCE(util, node::util::RegisterExternalReferences)