Update To 11.40.268.0
[platform/framework/web/crosswalk.git] / src / v8 / src / preparse-data.cc
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/base/logging.h"
6 #include "src/compiler.h"
7 #include "src/globals.h"
8 #include "src/hashmap.h"
9 #include "src/preparse-data.h"
10 #include "src/preparse-data-format.h"
11
12 namespace v8 {
13 namespace internal {
14
15
16 CompleteParserRecorder::CompleteParserRecorder()
17     : function_store_(0) {
18   preamble_[PreparseDataConstants::kMagicOffset] =
19       PreparseDataConstants::kMagicNumber;
20   preamble_[PreparseDataConstants::kVersionOffset] =
21       PreparseDataConstants::kCurrentVersion;
22   preamble_[PreparseDataConstants::kHasErrorOffset] = false;
23   preamble_[PreparseDataConstants::kFunctionsSizeOffset] = 0;
24   preamble_[PreparseDataConstants::kSizeOffset] = 0;
25   DCHECK_EQ(5, PreparseDataConstants::kHeaderSize);
26 #ifdef DEBUG
27   prev_start_ = -1;
28 #endif
29 }
30
31
32 void CompleteParserRecorder::LogMessage(int start_pos,
33                                         int end_pos,
34                                         const char* message,
35                                         const char* arg_opt,
36                                         bool is_reference_error) {
37   if (HasError()) return;
38   preamble_[PreparseDataConstants::kHasErrorOffset] = true;
39   function_store_.Reset();
40   STATIC_ASSERT(PreparseDataConstants::kMessageStartPos == 0);
41   function_store_.Add(start_pos);
42   STATIC_ASSERT(PreparseDataConstants::kMessageEndPos == 1);
43   function_store_.Add(end_pos);
44   STATIC_ASSERT(PreparseDataConstants::kMessageArgCountPos == 2);
45   function_store_.Add((arg_opt == NULL) ? 0 : 1);
46   STATIC_ASSERT(PreparseDataConstants::kIsReferenceErrorPos == 3);
47   function_store_.Add(is_reference_error ? 1 : 0);
48   STATIC_ASSERT(PreparseDataConstants::kMessageTextPos == 4);
49   WriteString(CStrVector(message));
50   if (arg_opt != NULL) WriteString(CStrVector(arg_opt));
51 }
52
53
54 void CompleteParserRecorder::WriteString(Vector<const char> str) {
55   function_store_.Add(str.length());
56   for (int i = 0; i < str.length(); i++) {
57     function_store_.Add(str[i]);
58   }
59 }
60
61
62 ScriptData* CompleteParserRecorder::GetScriptData() {
63   int function_size = function_store_.size();
64   int total_size = PreparseDataConstants::kHeaderSize + function_size;
65   unsigned* data = NewArray<unsigned>(total_size);
66   preamble_[PreparseDataConstants::kFunctionsSizeOffset] = function_size;
67   MemCopy(data, preamble_, sizeof(preamble_));
68   if (function_size > 0) {
69     function_store_.WriteTo(Vector<unsigned>(
70         data + PreparseDataConstants::kHeaderSize, function_size));
71   }
72   DCHECK(IsAligned(reinterpret_cast<intptr_t>(data), kPointerAlignment));
73   ScriptData* result = new ScriptData(reinterpret_cast<byte*>(data),
74                                       total_size * sizeof(unsigned));
75   result->AcquireDataOwnership();
76   return result;
77 }
78
79
80 } }  // namespace v8::internal.