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 "include/v8stdint.h"
6 #include "src/base/logging.h"
7 #include "src/compiler.h"
8 #include "src/globals.h"
9 #include "src/hashmap.h"
10 #include "src/preparse-data.h"
11 #include "src/preparse-data-format.h"
12
13 namespace v8 {
14 namespace internal {
15
16
CompleteParserRecorder()17 CompleteParserRecorder::CompleteParserRecorder()
18 : function_store_(0) {
19 preamble_[PreparseDataConstants::kMagicOffset] =
20 PreparseDataConstants::kMagicNumber;
21 preamble_[PreparseDataConstants::kVersionOffset] =
22 PreparseDataConstants::kCurrentVersion;
23 preamble_[PreparseDataConstants::kHasErrorOffset] = false;
24 preamble_[PreparseDataConstants::kFunctionsSizeOffset] = 0;
25 preamble_[PreparseDataConstants::kSizeOffset] = 0;
26 DCHECK_EQ(5, PreparseDataConstants::kHeaderSize);
27 #ifdef DEBUG
28 prev_start_ = -1;
29 #endif
30 }
31
32
LogMessage(int start_pos,int end_pos,const char * message,const char * arg_opt,bool is_reference_error)33 void CompleteParserRecorder::LogMessage(int start_pos,
34 int end_pos,
35 const char* message,
36 const char* arg_opt,
37 bool is_reference_error) {
38 if (HasError()) return;
39 preamble_[PreparseDataConstants::kHasErrorOffset] = true;
40 function_store_.Reset();
41 STATIC_ASSERT(PreparseDataConstants::kMessageStartPos == 0);
42 function_store_.Add(start_pos);
43 STATIC_ASSERT(PreparseDataConstants::kMessageEndPos == 1);
44 function_store_.Add(end_pos);
45 STATIC_ASSERT(PreparseDataConstants::kMessageArgCountPos == 2);
46 function_store_.Add((arg_opt == NULL) ? 0 : 1);
47 STATIC_ASSERT(PreparseDataConstants::kIsReferenceErrorPos == 3);
48 function_store_.Add(is_reference_error ? 1 : 0);
49 STATIC_ASSERT(PreparseDataConstants::kMessageTextPos == 4);
50 WriteString(CStrVector(message));
51 if (arg_opt != NULL) WriteString(CStrVector(arg_opt));
52 }
53
54
WriteString(Vector<const char> str)55 void CompleteParserRecorder::WriteString(Vector<const char> str) {
56 function_store_.Add(str.length());
57 for (int i = 0; i < str.length(); i++) {
58 function_store_.Add(str[i]);
59 }
60 }
61
62
GetScriptData()63 ScriptData* CompleteParserRecorder::GetScriptData() {
64 int function_size = function_store_.size();
65 int total_size = PreparseDataConstants::kHeaderSize + function_size;
66 unsigned* data = NewArray<unsigned>(total_size);
67 preamble_[PreparseDataConstants::kFunctionsSizeOffset] = function_size;
68 MemCopy(data, preamble_, sizeof(preamble_));
69 if (function_size > 0) {
70 function_store_.WriteTo(Vector<unsigned>(
71 data + PreparseDataConstants::kHeaderSize, function_size));
72 }
73 DCHECK(IsAligned(reinterpret_cast<intptr_t>(data), kPointerAlignment));
74 ScriptData* result = new ScriptData(reinterpret_cast<byte*>(data),
75 total_size * sizeof(unsigned));
76 result->AcquireDataOwnership();
77 return result;
78 }
79
80
81 } } // namespace v8::internal.
82