GCC Code Coverage Report
Directory: ../ Exec Total Coverage
File: /home/iojs/build/workspace/node-test-commit-linux-coverage/nodes/benchmark/out/../src/string_bytes.h Lines: 12 12 100.0 %
Date: 2017-10-21 Branches: 2 2 100.0 %

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// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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#ifndef SRC_STRING_BYTES_H_
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#define SRC_STRING_BYTES_H_
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#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
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// Decodes a v8::Local<v8::String> or Buffer to a raw char*
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#include "v8.h"
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#include "node.h"
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#include "env.h"
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#include "env-inl.h"
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#include "util.h"
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namespace node {
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class StringBytes {
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 public:
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  class InlineDecoder : public MaybeStackBuffer<char> {
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   public:
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    inline bool Decode(Environment* env,
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                       v8::Local<v8::String> string,
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                       v8::Local<v8::Value> encoding,
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                       enum encoding _default) {
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      enum encoding enc = ParseEncoding(env->isolate(), encoding, _default);
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      if (!StringBytes::IsValidString(string, enc)) {
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        env->ThrowTypeError("Bad input string");
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        return false;
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      }
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      const size_t storage = StringBytes::StorageSize(env->isolate(),
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                                                      string,
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                                                      enc);
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      AllocateSufficientStorage(storage);
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      const size_t length = StringBytes::Write(env->isolate(),
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                                               out(),
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                                               storage,
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                                               string,
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                                               enc);
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      // No zero terminator is included when using this method.
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      SetLength(length);
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      return true;
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    }
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    inline size_t size() const { return length(); }
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  };
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  // Does the string match the encoding? Quick but non-exhaustive.
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  // Example: a HEX string must have a length that's a multiple of two.
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  // FIXME(bnoordhuis) IsMaybeValidString()? Naming things is hard...
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  static bool IsValidString(v8::Local<v8::String> string,
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                            enum encoding enc);
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  // Fast, but can be 2 bytes oversized for Base64, and
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  // as much as triple UTF-8 strings <= 65536 chars in length
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  static size_t StorageSize(v8::Isolate* isolate,
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                            v8::Local<v8::Value> val,
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                            enum encoding enc);
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  // Precise byte count, but slightly slower for Base64 and
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  // very much slower for UTF-8
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  static size_t Size(v8::Isolate* isolate,
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                     v8::Local<v8::Value> val,
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                     enum encoding enc);
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  // If the string is external then assign external properties to data and len,
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  // then return true. If not return false.
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  static bool GetExternalParts(v8::Local<v8::Value> val,
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                               const char** data,
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                               size_t* len);
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  // Write the bytes from the string or buffer into the char*
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  // returns the number of bytes written, which will always be
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  // <= buflen.  Use StorageSize/Size first to know how much
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  // memory to allocate.
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  static size_t Write(v8::Isolate* isolate,
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                      char* buf,
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                      size_t buflen,
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                      v8::Local<v8::Value> val,
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                      enum encoding enc,
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                      int* chars_written = nullptr);
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  // Take the bytes in the src, and turn it into a Buffer or String.
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  // Don't call with encoding=UCS2.
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  static v8::MaybeLocal<v8::Value> Encode(v8::Isolate* isolate,
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                                          const char* buf,
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                                          size_t buflen,
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                                          enum encoding encoding,
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                                          v8::Local<v8::Value>* error);
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  // The input buffer should be in host endianness.
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  static v8::MaybeLocal<v8::Value> Encode(v8::Isolate* isolate,
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                                          const uint16_t* buf,
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                                          size_t buflen,
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                                          v8::Local<v8::Value>* error);
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  static v8::MaybeLocal<v8::Value> Encode(v8::Isolate* isolate,
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                                          const char* buf,
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                                          enum encoding encoding,
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                                          v8::Local<v8::Value>* error);
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 private:
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  static size_t WriteUCS2(char* buf,
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                          size_t buflen,
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                          v8::Local<v8::String> str,
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                          int flags,
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                          size_t* chars_written);
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};
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}  // namespace node
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#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
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#endif  // SRC_STRING_BYTES_H_