Head

GCC Code Coverage Report

Directory:	../		Exec	Total	Coverage
File:	/home/iojs/build/workspace/node-test-commit-linux-coverage-daily/nodes/benchmark/out/../src/string_decoder.cc	Lines:	140	146	95.9 %
Date:	2020-11-21 04:10:54	Branches:	95	118	80.5 %


#include "string_decoder.h"  // NOLINT(build/include_inline)
#include "string_decoder-inl.h"

#include "env-inl.h"
#include "node_buffer.h"
#include "node_external_reference.h"
#include "string_bytes.h"
#include "util.h"

using v8::Array;
using v8::ArrayBufferView;
using v8::Context;
using v8::FunctionCallbackInfo;
using v8::Integer;
using v8::Isolate;
using v8::Local;
using v8::MaybeLocal;
using v8::Object;
using v8::String;
using v8::Value;

namespace node {

namespace {

MaybeLocal<String> MakeString(Isolate* isolate,
                              const char* data,
                              size_t length,
                              enum encoding encoding) {
  Local<Value> error;
  MaybeLocal<Value> ret;
  if (encoding == UTF8) {
    return String::NewFromUtf8(
        isolate,
        data,
        v8::NewStringType::kNormal,
        length);
  } else {
    ret = StringBytes::Encode(
        isolate,
        data,
        length,
        encoding,
        &error);
  }

  if (ret.IsEmpty()) {
    CHECK(!error.IsEmpty());
    isolate->ThrowException(error);
  }

  DCHECK(ret.IsEmpty() || ret.ToLocalChecked()->IsString());
  return ret.FromMaybe(Local<Value>()).As<String>();
}

}  // anonymous namespace


MaybeLocal<String> StringDecoder::DecodeData(Isolate* isolate,
                                             const char* data,
                                             size_t* nread_ptr) {
  Local<String> prepend, body;

  size_t nread = *nread_ptr;

  if (Encoding() == UTF8 || Encoding() == UCS2 || Encoding() == BASE64) {
    // See if we want bytes to finish a character from the previous
    // chunk; if so, copy the new bytes to the missing bytes buffer
    // and create a small string from it that is to be prepended to the
    // main body.
    if (MissingBytes() > 0) {
      // There are never more bytes missing than the pre-calculated maximum.
      CHECK_LE(MissingBytes() + BufferedBytes(),
               kIncompleteCharactersEnd);
      if (Encoding() == UTF8) {
        // For UTF-8, we need special treatment to align with the V8 decoder:
        // If an incomplete character is found at a chunk boundary, we use
        // its remainder and pass it to V8 as-is.
        for (size_t i = 0; i < nread && i < MissingBytes(); ++i) {
          if ((data[i] & 0xC0) != 0x80) {
            // This byte is not a continuation byte even though it should have
            // been one. We stop decoding of the incomplete character at this
            // point (but still use the rest of the incomplete bytes from this
            // chunk) and assume that the new, unexpected byte starts a new one.
            state_[kMissingBytes] = 0;
            memcpy(IncompleteCharacterBuffer() + BufferedBytes(), data, i);
            state_[kBufferedBytes] += i;
            data += i;
            nread -= i;
            break;
          }
        }
      }

      size_t found_bytes =
          std::min(nread, static_cast<size_t>(MissingBytes()));
      memcpy(IncompleteCharacterBuffer() + BufferedBytes(),
             data,
             found_bytes);
      // Adjust the two buffers.
      data += found_bytes;
      nread -= found_bytes;

      state_[kMissingBytes] -= found_bytes;
      state_[kBufferedBytes] += found_bytes;

      if (LIKELY(MissingBytes() == 0)) {
        // If no more bytes are missing, create a small string that we
        // will later prepend.
        if (!MakeString(isolate,
                        IncompleteCharacterBuffer(),
                        BufferedBytes(),
                        Encoding()).ToLocal(&prepend)) {
          return MaybeLocal<String>();
        }

        *nread_ptr += BufferedBytes();
        // No more buffered bytes.
        state_[kBufferedBytes] = 0;
      }
    }

    // It could be that trying to finish the previous chunk already
    // consumed all data that we received in this chunk.
    if (UNLIKELY(nread == 0)) {
      body = !prepend.IsEmpty() ? prepend : String::Empty(isolate);
      prepend = Local<String>();
    } else {
      // If not, that means is no character left to finish at this point.
      DCHECK_EQ(MissingBytes(), 0);
      DCHECK_EQ(BufferedBytes(), 0);

      // See whether there is a character that we may have to cut off and
      // finish when receiving the next chunk.
      if (Encoding() == UTF8 && data[nread - 1] & 0x80) {
        // This is UTF-8 encoded data and we ended on a non-ASCII UTF-8 byte.
        // This means we'll need to figure out where the character to which
        // the byte belongs begins.
        for (size_t i = nread - 1; ; --i) {
          DCHECK_LT(i, nread);
          state_[kBufferedBytes]++;
          if ((data[i] & 0xC0) == 0x80) {
            // This byte does not start a character (a "trailing" byte).
            if (state_[kBufferedBytes] >= 4 || i == 0) {
              // We either have more then 4 trailing bytes (which means
              // the current character would not be inside the range for
              // valid Unicode, and in particular cannot be represented
              // through JavaScript's UTF-16-based approach to strings), or the
              // current buffer does not contain the start of an UTF-8 character
              // at all. Either way, this is invalid UTF8 and we can just
              // let the engine's decoder handle it.
              state_[kBufferedBytes] = 0;
              break;
            }
          } else {
            // Found the first byte of a UTF-8 character. By looking at the
            // upper bits we can tell how long the character *should* be.
            if ((data[i] & 0xE0) == 0xC0) {
              state_[kMissingBytes] = 2;
            } else if ((data[i] & 0xF0) == 0xE0) {
              state_[kMissingBytes] = 3;
            } else if ((data[i] & 0xF8) == 0xF0) {
              state_[kMissingBytes] = 4;
            } else {
              // This lead byte would indicate a character outside of the
              // representable range.
              state_[kBufferedBytes] = 0;
              break;
            }

            if (BufferedBytes() >= MissingBytes()) {
              // Received more or exactly as many trailing bytes than the lead
              // character would indicate. In the "==" case, we have valid
              // data and don't need to slice anything off;
              // in the ">" case, this is invalid UTF-8 anyway.
              state_[kMissingBytes] = 0;
              state_[kBufferedBytes] = 0;
            }

            state_[kMissingBytes] -= state_[kBufferedBytes];
            break;
          }
        }
      } else if (Encoding() == UCS2) {
        if ((nread % 2) == 1) {
          // We got half a codepoint, and need the second byte of it.
          state_[kBufferedBytes] = 1;
          state_[kMissingBytes] = 1;
        } else if ((data[nread - 1] & 0xFC) == 0xD8) {
          // Half a split UTF-16 character.
          state_[kBufferedBytes] = 2;
          state_[kMissingBytes] = 2;
        }
      } else if (Encoding() == BASE64) {
        state_[kBufferedBytes] = nread % 3;
        if (state_[kBufferedBytes] > 0)
          state_[kMissingBytes] = 3 - BufferedBytes();
      }

      if (BufferedBytes() > 0) {
        // Copy the requested number of buffered bytes from the end of the
        // input into the incomplete character buffer.
        nread -= BufferedBytes();
        *nread_ptr -= BufferedBytes();
        memcpy(IncompleteCharacterBuffer(), data + nread, BufferedBytes());
      }

      if (nread > 0) {
        if (!MakeString(isolate, data, nread, Encoding()).ToLocal(&body))
          return MaybeLocal<String>();
      } else {
        body = String::Empty(isolate);
      }
    }

    if (prepend.IsEmpty()) {
      return body;
    } else {
      return String::Concat(isolate, prepend, body);
    }
  } else {
    CHECK(Encoding() == ASCII || Encoding() == HEX || Encoding() == LATIN1);
    return MakeString(isolate, data, nread, Encoding());
  }
}

MaybeLocal<String> StringDecoder::FlushData(Isolate* isolate) {
  if (Encoding() == ASCII || Encoding() == HEX || Encoding() == LATIN1) {
    CHECK_EQ(MissingBytes(), 0);
    CHECK_EQ(BufferedBytes(), 0);
  }

  if (Encoding() == UCS2 && BufferedBytes() % 2 == 1) {
    // Ignore a single trailing byte, like the JS decoder does.
    state_[kMissingBytes]--;
    state_[kBufferedBytes]--;
  }

  if (BufferedBytes() == 0)
    return String::Empty(isolate);

  MaybeLocal<String> ret =
      MakeString(isolate,
                 IncompleteCharacterBuffer(),
                 BufferedBytes(),
                 Encoding());

  state_[kMissingBytes] = 0;
  state_[kBufferedBytes] = 0;

  return ret;
}

namespace {

void DecodeData(const FunctionCallbackInfo<Value>& args) {
  StringDecoder* decoder =
      reinterpret_cast<StringDecoder*>(Buffer::Data(args[0]));
  CHECK_NOT_NULL(decoder);

  CHECK(args[1]->IsArrayBufferView());
  ArrayBufferViewContents<char> content(args[1].As<ArrayBufferView>());
  size_t length = content.length();

  MaybeLocal<String> ret =
      decoder->DecodeData(args.GetIsolate(), content.data(), &length);
  if (!ret.IsEmpty())
    args.GetReturnValue().Set(ret.ToLocalChecked());
}

void FlushData(const FunctionCallbackInfo<Value>& args) {
  StringDecoder* decoder =
      reinterpret_cast<StringDecoder*>(Buffer::Data(args[0]));
  CHECK_NOT_NULL(decoder);
  MaybeLocal<String> ret = decoder->FlushData(args.GetIsolate());
  if (!ret.IsEmpty())
    args.GetReturnValue().Set(ret.ToLocalChecked());
}

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

#define SET_DECODER_CONSTANT(name)                                            \
  target->Set(context,                                                        \
              FIXED_ONE_BYTE_STRING(isolate, #name),                          \
              Integer::New(isolate, StringDecoder::name)).FromJust()

  SET_DECODER_CONSTANT(kIncompleteCharactersStart);
  SET_DECODER_CONSTANT(kIncompleteCharactersEnd);
  SET_DECODER_CONSTANT(kMissingBytes);
  SET_DECODER_CONSTANT(kBufferedBytes);
  SET_DECODER_CONSTANT(kEncodingField);
  SET_DECODER_CONSTANT(kNumFields);

  Local<Array> encodings = Array::New(isolate);
#define ADD_TO_ENCODINGS_ARRAY(cname, jsname)                                 \
  encodings->Set(context,                                                     \
                 static_cast<int32_t>(cname),                                 \
                 FIXED_ONE_BYTE_STRING(isolate, jsname)).FromJust()
  ADD_TO_ENCODINGS_ARRAY(ASCII, "ascii");
  ADD_TO_ENCODINGS_ARRAY(UTF8, "utf8");
  ADD_TO_ENCODINGS_ARRAY(BASE64, "base64");
  ADD_TO_ENCODINGS_ARRAY(UCS2, "utf16le");
  ADD_TO_ENCODINGS_ARRAY(HEX, "hex");
  ADD_TO_ENCODINGS_ARRAY(BUFFER, "buffer");
  ADD_TO_ENCODINGS_ARRAY(LATIN1, "latin1");

  target->Set(context,
              FIXED_ONE_BYTE_STRING(isolate, "encodings"),
              encodings).Check();

  target->Set(context,
              FIXED_ONE_BYTE_STRING(isolate, "kSize"),
              Integer::New(isolate, sizeof(StringDecoder))).Check();

  env->SetMethod(target, "decode", DecodeData);
  env->SetMethod(target, "flush", FlushData);
}

}  // anonymous namespace

void RegisterStringDecoderExternalReferences(
    ExternalReferenceRegistry* registry) {
  registry->Register(DecodeData);
  registry->Register(FlushData);
}

}  // namespace node

NODE_MODULE_CONTEXT_AWARE_INTERNAL(string_decoder,
                                   node::InitializeStringDecoder)
NODE_MODULE_EXTERNAL_REFERENCE(string_decoder,
                               node::RegisterStringDecoderExternalReferences)


Generated by: GCOVR (Version 3.4)

Line	Branch	Exec	Source
1			#include "string_decoder.h" // NOLINT(build/include_inline)
2			#include "string_decoder-inl.h"
3
4			#include "env-inl.h"
5			#include "node_buffer.h"
6			#include "node_external_reference.h"
7			#include "string_bytes.h"
8			#include "util.h"
9
10			using v8::Array;
11			using v8::ArrayBufferView;
12			using v8::Context;
13			using v8::FunctionCallbackInfo;
14			using v8::Integer;
15			using v8::Isolate;
16			using v8::Local;
17			using v8::MaybeLocal;
18			using v8::Object;
19			using v8::String;
20			using v8::Value;
21
22			namespace node {
23
24			namespace {
25
26		25596	MaybeLocal<String> MakeString(Isolate* isolate,
27			const char* data,
28			size_t length,
29			enum encoding encoding) {
30			Local<Value> error;
31			MaybeLocal<Value> ret;
32	✓✓	25596	if (encoding == UTF8) {
33			return String::NewFromUtf8(
34			isolate,
35			data,
36			v8::NewStringType::kNormal,
37		14699	length);
38			} else {
39			ret = StringBytes::Encode(
40			isolate,
41			data,
42			length,
43			encoding,
44		10897	&error);
45			}
46
47	✗✓	10897	if (ret.IsEmpty()) {
48			CHECK(!error.IsEmpty());
49			isolate->ThrowException(error);
50			}
51
52			DCHECK(ret.IsEmpty() \|\| ret.ToLocalChecked()->IsString());
53		21794	return ret.FromMaybe(Local<Value>()).As<String>();
54			}
55
56			} // anonymous namespace
57
58
59		26323	MaybeLocal<String> StringDecoder::DecodeData(Isolate* isolate,
60			const char* data,
61			size_t* nread_ptr) {
62			Local<String> prepend, body;
63
64		26323	size_t nread = *nread_ptr;
65
66	✓✓✓✓ ✓✓✓✓	26323	if (Encoding() == UTF8 \|\| Encoding() == UCS2 \|\| Encoding() == BASE64) {
67			// See if we want bytes to finish a character from the previous
68			// chunk; if so, copy the new bytes to the missing bytes buffer
69			// and create a small string from it that is to be prepended to the
70			// main body.
71	✓✓	19844	if (MissingBytes() > 0) {
72			// There are never more bytes missing than the pre-calculated maximum.
73	✗✓	3688	CHECK_LE(MissingBytes() + BufferedBytes(),
74			kIncompleteCharactersEnd);
75	✓✓	3688	if (Encoding() == UTF8) {
76			// For UTF-8, we need special treatment to align with the V8 decoder:
77			// If an incomplete character is found at a chunk boundary, we use
78			// its remainder and pass it to V8 as-is.
79	✓✓✓✓ ✓✓	3334	for (size_t i = 0; i < nread && i < MissingBytes(); ++i) {
80	✓✓	1883	if ((data[i] & 0xC0) != 0x80) {
81			// This byte is not a continuation byte even though it should have
82			// been one. We stop decoding of the incomplete character at this
83			// point (but still use the rest of the incomplete bytes from this
84			// chunk) and assume that the new, unexpected byte starts a new one.
85		135	state_[kMissingBytes] = 0;
86		135	memcpy(IncompleteCharacterBuffer() + BufferedBytes(), data, i);
87		135	state_[kBufferedBytes] += i;
88		135	data += i;
89		135	nread -= i;
90		135	break;
91			}
92			}
93			}
94
95			size_t found_bytes =
96		3688	std::min(nread, static_cast<size_t>(MissingBytes()));
97		3688	memcpy(IncompleteCharacterBuffer() + BufferedBytes(),
98			data,
99		3688	found_bytes);
100			// Adjust the two buffers.
101		3688	data += found_bytes;
102		3688	nread -= found_bytes;
103
104		3688	state_[kMissingBytes] -= found_bytes;
105		3688	state_[kBufferedBytes] += found_bytes;
106
107	✓✓	3688	if (LIKELY(MissingBytes() == 0)) {
108			// If no more bytes are missing, create a small string that we
109			// will later prepend.
110	✗✓	6656	if (!MakeString(isolate,
111		3328	IncompleteCharacterBuffer(),
112		3328	BufferedBytes(),
113		9984	Encoding()).ToLocal(&prepend)) {
114			return MaybeLocal<String>();
115			}
116
117		3328	*nread_ptr += BufferedBytes();
118			// No more buffered bytes.
119		3328	state_[kBufferedBytes] = 0;
120			}
121			}
122
123			// It could be that trying to finish the previous chunk already
124			// consumed all data that we received in this chunk.
125	✓✓	19844	if (UNLIKELY(nread == 0)) {
126	✓✓	2565	body = !prepend.IsEmpty() ? prepend : String::Empty(isolate);
127		2162	prepend = Local<String>();
128			} else {
129			// If not, that means is no character left to finish at this point.
130			DCHECK_EQ(MissingBytes(), 0);
131			DCHECK_EQ(BufferedBytes(), 0);
132
133			// See whether there is a character that we may have to cut off and
134			// finish when receiving the next chunk.
135	✓✓✓✓ ✓✓	17682	if (Encoding() == UTF8 && data[nread - 1] & 0x80) {
136			// This is UTF-8 encoded data and we ended on a non-ASCII UTF-8 byte.
137			// This means we'll need to figure out where the character to which
138			// the byte belongs begins.
139		3013	for (size_t i = nread - 1; ; --i) {
140			DCHECK_LT(i, nread);
141		4110	state_[kBufferedBytes]++;
142	✓✓	3013	if ((data[i] & 0xC0) == 0x80) {
143			// This byte does not start a character (a "trailing" byte).
144	✓✓✓✓	1149	if (state_[kBufferedBytes] >= 4 \|\| i == 0) {
145			// We either have more then 4 trailing bytes (which means
146			// the current character would not be inside the range for
147			// valid Unicode, and in particular cannot be represented
148			// through JavaScript's UTF-16-based approach to strings), or the
149			// current buffer does not contain the start of an UTF-8 character
150			// at all. Either way, this is invalid UTF8 and we can just
151			// let the engine's decoder handle it.
152		52	state_[kBufferedBytes] = 0;
153		52	break;
154			}
155			} else {
156			// Found the first byte of a UTF-8 character. By looking at the
157			// upper bits we can tell how long the character should be.
158	✓✓	1864	if ((data[i] & 0xE0) == 0xC0) {
159		554	state_[kMissingBytes] = 2;
160	✓✓	1310	} else if ((data[i] & 0xF0) == 0xE0) {
161		1135	state_[kMissingBytes] = 3;
162	✓✓	175	} else if ((data[i] & 0xF8) == 0xF0) {
163		53	state_[kMissingBytes] = 4;
164			} else {
165			// This lead byte would indicate a character outside of the
166			// representable range.
167		122	state_[kBufferedBytes] = 0;
168		122	break;
169			}
170
171	✓✓	1742	if (BufferedBytes() >= MissingBytes()) {
172			// Received more or exactly as many trailing bytes than the lead
173			// character would indicate. In the "==" case, we have valid
174			// data and don't need to slice anything off;
175			// in the ">" case, this is invalid UTF-8 anyway.
176		400	state_[kMissingBytes] = 0;
177		400	state_[kBufferedBytes] = 0;
178			}
179
180		1742	state_[kMissingBytes] -= state_[kBufferedBytes];
181		1742	break;
182			}
183			}
184	✓✓	15766	} else if (Encoding() == UCS2) {
185	✓✓	2854	if ((nread % 2) == 1) {
186			// We got half a codepoint, and need the second byte of it.
187		1772	state_[kBufferedBytes] = 1;
188		1772	state_[kMissingBytes] = 1;
189	✓✓	1082	} else if ((data[nread - 1] & 0xFC) == 0xD8) {
190			// Half a split UTF-16 character.
191		10	state_[kBufferedBytes] = 2;
192		10	state_[kMissingBytes] = 2;
193			}
194	✓✓	12912	} else if (Encoding() == BASE64) {
195		702	state_[kBufferedBytes] = nread % 3;
196	✓✓	702	if (state_[kBufferedBytes] > 0)
197		482	state_[kMissingBytes] = 3 - BufferedBytes();
198			}
199
200	✓✓	17682	if (BufferedBytes() > 0) {
201			// Copy the requested number of buffered bytes from the end of the
202			// input into the incomplete character buffer.
203		3606	nread -= BufferedBytes();
204		3606	*nread_ptr -= BufferedBytes();
205		3606	memcpy(IncompleteCharacterBuffer(), data + nread, BufferedBytes());
206			}
207
208	✓✓	17682	if (nread > 0) {
209	✗✓	31226	if (!MakeString(isolate, data, nread, Encoding()).ToLocal(&body))
210			return MaybeLocal<String>();
211			} else {
212		2069	body = String::Empty(isolate);
213			}
214			}
215
216	✓✓	19844	if (prepend.IsEmpty()) {
217		18275	return body;
218			} else {
219		3138	return String::Concat(isolate, prepend, body);
220			}
221			} else {
222	✓✓✓✓ ✓✓✗✓ ✗✓	6479	CHECK(Encoding() == ASCII \|\| Encoding() == HEX \|\| Encoding() == LATIN1);
223		6479	return MakeString(isolate, data, nread, Encoding());
224			}
225			}
226
227		278	MaybeLocal<String> StringDecoder::FlushData(Isolate* isolate) {
228	✓✗✓✗ ✗✓✗✓	278	if (Encoding() == ASCII \|\| Encoding() == HEX \|\| Encoding() == LATIN1) {
229			CHECK_EQ(MissingBytes(), 0);
230			CHECK_EQ(BufferedBytes(), 0);
231			}
232
233	✓✓✓✓ ✓✓	278	if (Encoding() == UCS2 && BufferedBytes() % 2 == 1) {
234			// Ignore a single trailing byte, like the JS decoder does.
235		103	state_[kMissingBytes]--;
236		103	state_[kBufferedBytes]--;
237			}
238
239	✓✓	278	if (BufferedBytes() == 0)
240		102	return String::Empty(isolate);
241
242			MaybeLocal<String> ret =
243			MakeString(isolate,
244		176	IncompleteCharacterBuffer(),
245		176	BufferedBytes(),
246		528	Encoding());
247
248		176	state_[kMissingBytes] = 0;
249		176	state_[kBufferedBytes] = 0;
250
251		176	return ret;
252			}
253
254			namespace {
255
256		26323	void DecodeData(const FunctionCallbackInfo<Value>& args) {
257			StringDecoder* decoder =
258		26323	reinterpret_cast<StringDecoder*>(Buffer::Data(args[0]));
259	✗✓	26323	CHECK_NOT_NULL(decoder);
260
261	✗✓	52646	CHECK(args[1]->IsArrayBufferView());
262		52646	ArrayBufferViewContents<char> content(args[1].As<ArrayBufferView>());
263		26323	size_t length = content.length();
264
265			MaybeLocal<String> ret =
266		52646	decoder->DecodeData(args.GetIsolate(), content.data(), &length);
267	✓✗	26323	if (!ret.IsEmpty())
268		52646	args.GetReturnValue().Set(ret.ToLocalChecked());
269		26323	}
270
271		278	void FlushData(const FunctionCallbackInfo<Value>& args) {
272			StringDecoder* decoder =
273		278	reinterpret_cast<StringDecoder*>(Buffer::Data(args[0]));
274	✗✓	278	CHECK_NOT_NULL(decoder);
275		278	MaybeLocal<String> ret = decoder->FlushData(args.GetIsolate());
276	✓✗	278	if (!ret.IsEmpty())
277		556	args.GetReturnValue().Set(ret.ToLocalChecked());
278		278	}
279
280		445	void InitializeStringDecoder(Local<Object> target,
281			Local<Value> unused,
282			Local<Context> context,
283			void* priv) {
284		445	Environment* env = Environment::GetCurrent(context);
285		445	Isolate* isolate = env->isolate();
286
287			#define SET_DECODER_CONSTANT(name) \
288			target->Set(context, \
289			FIXED_ONE_BYTE_STRING(isolate, #name), \
290			Integer::New(isolate, StringDecoder::name)).FromJust()
291
292		1780	SET_DECODER_CONSTANT(kIncompleteCharactersStart);
293		1780	SET_DECODER_CONSTANT(kIncompleteCharactersEnd);
294		1780	SET_DECODER_CONSTANT(kMissingBytes);
295		1780	SET_DECODER_CONSTANT(kBufferedBytes);
296		1780	SET_DECODER_CONSTANT(kEncodingField);
297		1780	SET_DECODER_CONSTANT(kNumFields);
298
299		445	Local<Array> encodings = Array::New(isolate);
300			#define ADD_TO_ENCODINGS_ARRAY(cname, jsname) \
301			encodings->Set(context, \
302			static_cast<int32_t>(cname), \
303			FIXED_ONE_BYTE_STRING(isolate, jsname)).FromJust()
304		1335	ADD_TO_ENCODINGS_ARRAY(ASCII, "ascii");
305		1335	ADD_TO_ENCODINGS_ARRAY(UTF8, "utf8");
306		1335	ADD_TO_ENCODINGS_ARRAY(BASE64, "base64");
307		1335	ADD_TO_ENCODINGS_ARRAY(UCS2, "utf16le");
308		1335	ADD_TO_ENCODINGS_ARRAY(HEX, "hex");
309		1335	ADD_TO_ENCODINGS_ARRAY(BUFFER, "buffer");
310		1335	ADD_TO_ENCODINGS_ARRAY(LATIN1, "latin1");
311
312		890	target->Set(context,
313			FIXED_ONE_BYTE_STRING(isolate, "encodings"),
314		1335	encodings).Check();
315
316		890	target->Set(context,
317			FIXED_ONE_BYTE_STRING(isolate, "kSize"),
318		1780	Integer::New(isolate, sizeof(StringDecoder))).Check();
319
320		445	env->SetMethod(target, "decode", DecodeData);
321		445	env->SetMethod(target, "flush", FlushData);
322		445	}
323
324			} // anonymous namespace
325
326		4601	void RegisterStringDecoderExternalReferences(
327			ExternalReferenceRegistry* registry) {
328		4601	registry->Register(DecodeData);
329		4601	registry->Register(FlushData);
330		4601	}
331
332			} // namespace node
333
334		4670	NODE_MODULE_CONTEXT_AWARE_INTERNAL(string_decoder,
335			node::InitializeStringDecoder)
336	✓✗✓✗	18635	NODE_MODULE_EXTERNAL_REFERENCE(string_decoder,
337			node::RegisterStringDecoderExternalReferences)