1// Copyright 2010 the V8 project authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "src/parsing/preparse-data.h"
6#include "src/base/hashmap.h"
7#include "src/base/logging.h"
8#include "src/globals.h"
9#include "src/objects-inl.h"
10#include "src/parsing/parser.h"
11#include "src/parsing/preparse-data-format.h"
12
13namespace v8 {
14namespace internal {
15
16void ParserLogger::LogFunction(int start, int end, int num_parameters,
17                               int function_length,
18                               bool has_duplicate_parameters, int properties,
19                               LanguageMode language_mode,
20                               bool uses_super_property, bool calls_eval,
21                               int num_inner_functions) {
22  function_store_.Add(start);
23  function_store_.Add(end);
24  function_store_.Add(num_parameters);
25  function_store_.Add(function_length);
26  function_store_.Add(properties);
27  function_store_.Add(
28      FunctionEntry::EncodeFlags(language_mode, uses_super_property, calls_eval,
29                                 has_duplicate_parameters));
30  function_store_.Add(num_inner_functions);
31}
32
33ParserLogger::ParserLogger() {
34  preamble_[PreparseDataConstants::kMagicOffset] =
35      PreparseDataConstants::kMagicNumber;
36  preamble_[PreparseDataConstants::kVersionOffset] =
37      PreparseDataConstants::kCurrentVersion;
38  preamble_[PreparseDataConstants::kFunctionsSizeOffset] = 0;
39  preamble_[PreparseDataConstants::kSizeOffset] = 0;
40  DCHECK_EQ(4, PreparseDataConstants::kHeaderSize);
41#ifdef DEBUG
42  prev_start_ = -1;
43#endif
44}
45
46ScriptData* ParserLogger::GetScriptData() {
47  int function_size = function_store_.size();
48  int total_size = PreparseDataConstants::kHeaderSize + function_size;
49  unsigned* data = NewArray<unsigned>(total_size);
50  preamble_[PreparseDataConstants::kFunctionsSizeOffset] = function_size;
51  MemCopy(data, preamble_, sizeof(preamble_));
52  if (function_size > 0) {
53    function_store_.WriteTo(Vector<unsigned>(
54        data + PreparseDataConstants::kHeaderSize, function_size));
55  }
56  DCHECK(IsAligned(reinterpret_cast<intptr_t>(data), kPointerAlignment));
57  ScriptData* result = new ScriptData(reinterpret_cast<byte*>(data),
58                                      total_size * sizeof(unsigned));
59  result->AcquireDataOwnership();
60  return result;
61}
62
63
64}  // namespace internal
65}  // namespace v8.
66