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/globals.h"
7 #include "src/hashmap.h"
8 #include "src/parsing/parser.h"
9 #include "src/parsing/preparse-data.h"
10 #include "src/parsing/preparse-data-format.h"
11
12 namespace v8 {
13 namespace internal {
14
15
CompleteParserRecorder()16 CompleteParserRecorder::CompleteParserRecorder() {
17 preamble_[PreparseDataConstants::kMagicOffset] =
18 PreparseDataConstants::kMagicNumber;
19 preamble_[PreparseDataConstants::kVersionOffset] =
20 PreparseDataConstants::kCurrentVersion;
21 preamble_[PreparseDataConstants::kHasErrorOffset] = false;
22 preamble_[PreparseDataConstants::kFunctionsSizeOffset] = 0;
23 preamble_[PreparseDataConstants::kSizeOffset] = 0;
24 DCHECK_EQ(5, PreparseDataConstants::kHeaderSize);
25 #ifdef DEBUG
26 prev_start_ = -1;
27 #endif
28 }
29
30
LogMessage(int start_pos,int end_pos,MessageTemplate::Template message,const char * arg_opt,ParseErrorType error_type)31 void CompleteParserRecorder::LogMessage(int start_pos, int end_pos,
32 MessageTemplate::Template message,
33 const char* arg_opt,
34 ParseErrorType error_type) {
35 if (HasError()) return;
36 preamble_[PreparseDataConstants::kHasErrorOffset] = true;
37 function_store_.Reset();
38 STATIC_ASSERT(PreparseDataConstants::kMessageStartPos == 0);
39 function_store_.Add(start_pos);
40 STATIC_ASSERT(PreparseDataConstants::kMessageEndPos == 1);
41 function_store_.Add(end_pos);
42 STATIC_ASSERT(PreparseDataConstants::kMessageArgCountPos == 2);
43 function_store_.Add((arg_opt == NULL) ? 0 : 1);
44 STATIC_ASSERT(PreparseDataConstants::kParseErrorTypePos == 3);
45 function_store_.Add(error_type);
46 STATIC_ASSERT(PreparseDataConstants::kMessageTemplatePos == 4);
47 function_store_.Add(static_cast<unsigned>(message));
48 STATIC_ASSERT(PreparseDataConstants::kMessageArgPos == 5);
49 if (arg_opt != NULL) WriteString(CStrVector(arg_opt));
50 }
51
52
WriteString(Vector<const char> str)53 void CompleteParserRecorder::WriteString(Vector<const char> str) {
54 function_store_.Add(str.length());
55 for (int i = 0; i < str.length(); i++) {
56 function_store_.Add(str[i]);
57 }
58 }
59
60
GetScriptData()61 ScriptData* CompleteParserRecorder::GetScriptData() {
62 int function_size = function_store_.size();
63 int total_size = PreparseDataConstants::kHeaderSize + function_size;
64 unsigned* data = NewArray<unsigned>(total_size);
65 preamble_[PreparseDataConstants::kFunctionsSizeOffset] = function_size;
66 MemCopy(data, preamble_, sizeof(preamble_));
67 if (function_size > 0) {
68 function_store_.WriteTo(Vector<unsigned>(
69 data + PreparseDataConstants::kHeaderSize, function_size));
70 }
71 DCHECK(IsAligned(reinterpret_cast<intptr_t>(data), kPointerAlignment));
72 ScriptData* result = new ScriptData(reinterpret_cast<byte*>(data),
73 total_size * sizeof(unsigned));
74 result->AcquireDataOwnership();
75 return result;
76 }
77
78
79 } // namespace internal
80 } // namespace v8.
81