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Issue 641283003: Support lazy parsing of inner functions (Closed) Base URL: https://chromium.googlesource.com/external/v8.git@bleeding_edge
Patch Set: Actually track variable declarations in the preparser Created 6 years, 1 month ago
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1 // Copyright 2010 the V8 project authors. All rights reserved. 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 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "src/ast-value-factory.h"
5 #include "src/base/logging.h" 6 #include "src/base/logging.h"
6 #include "src/compiler.h" 7 #include "src/compiler.h"
7 #include "src/globals.h" 8 #include "src/globals.h"
8 #include "src/hashmap.h" 9 #include "src/hashmap.h"
9 #include "src/preparse-data.h" 10 #include "src/preparse-data.h"
10 #include "src/preparse-data-format.h" 11 #include "src/preparse-data-format.h"
11 12
12 namespace v8 { 13 namespace v8 {
13 namespace internal { 14 namespace internal {
14 15
15 16
16 CompleteParserRecorder::CompleteParserRecorder() 17 CompleteParserRecorder::CompleteParserRecorder()
17 : function_store_(0) { 18 : function_store_(0), next_function_calls_eval_(false) {
18 preamble_[PreparseDataConstants::kMagicOffset] = 19 preamble_[PreparseDataConstants::kMagicOffset] =
19 PreparseDataConstants::kMagicNumber; 20 PreparseDataConstants::kMagicNumber;
20 preamble_[PreparseDataConstants::kVersionOffset] = 21 preamble_[PreparseDataConstants::kVersionOffset] =
21 PreparseDataConstants::kCurrentVersion; 22 PreparseDataConstants::kCurrentVersion;
22 preamble_[PreparseDataConstants::kHasErrorOffset] = false; 23 preamble_[PreparseDataConstants::kHasErrorOffset] = false;
23 preamble_[PreparseDataConstants::kFunctionsSizeOffset] = 0; 24 preamble_[PreparseDataConstants::kFunctionsSizeOffset] = 0;
24 preamble_[PreparseDataConstants::kSizeOffset] = 0; 25 preamble_[PreparseDataConstants::kSizeOffset] = 0;
25 DCHECK_EQ(5, PreparseDataConstants::kHeaderSize); 26 DCHECK_EQ(5, PreparseDataConstants::kHeaderSize);
26 #ifdef DEBUG 27 #ifdef DEBUG
27 prev_start_ = -1; 28 prev_start_ = -1;
(...skipping 24 matching lines...) Expand all
52 53
53 54
54 void CompleteParserRecorder::WriteString(Vector<const char> str) { 55 void CompleteParserRecorder::WriteString(Vector<const char> str) {
55 function_store_.Add(str.length()); 56 function_store_.Add(str.length());
56 for (int i = 0; i < str.length(); i++) { 57 for (int i = 0; i < str.length(); i++) {
57 function_store_.Add(str[i]); 58 function_store_.Add(str[i]);
58 } 59 }
59 } 60 }
60 61
61 62
63 void CompleteParserRecorder::WriteString(const AstRawString* str) {
64 const bool is_one_byte = str->is_one_byte();
65 function_store_.Add(is_one_byte);
66 int byte_length = str->length();
67 if (!is_one_byte) {
68 byte_length *= 2;
69 }
70 function_store_.Add(byte_length);
71 DCHECK(byte_length > 0);
72 const int word_length =
73 1 + (((byte_length * sizeof(unsigned char)) - 1) / sizeof(unsigned));
74 Vector<unsigned char> dest =
75 Vector<unsigned char>::cast(function_store_.AddBlock(word_length, 0));
76 MemCopy(dest.start(), str->raw_data(), byte_length);
77 }
78
79
62 ScriptData* CompleteParserRecorder::GetScriptData() { 80 ScriptData* CompleteParserRecorder::GetScriptData() {
63 int function_size = function_store_.size(); 81 int function_size = function_store_.size();
64 int total_size = PreparseDataConstants::kHeaderSize + function_size; 82 int total_size = PreparseDataConstants::kHeaderSize + function_size;
65 unsigned* data = NewArray<unsigned>(total_size); 83 unsigned* data = NewArray<unsigned>(total_size);
66 preamble_[PreparseDataConstants::kFunctionsSizeOffset] = function_size; 84 preamble_[PreparseDataConstants::kFunctionsSizeOffset] = function_size;
67 MemCopy(data, preamble_, sizeof(preamble_)); 85 MemCopy(data, preamble_, sizeof(preamble_));
68 if (function_size > 0) { 86 if (function_size > 0) {
69 function_store_.WriteTo(Vector<unsigned>( 87 function_store_.WriteTo(Vector<unsigned>(
70 data + PreparseDataConstants::kHeaderSize, function_size)); 88 data + PreparseDataConstants::kHeaderSize, function_size));
71 } 89 }
72 DCHECK(IsAligned(reinterpret_cast<intptr_t>(data), kPointerAlignment)); 90 DCHECK(IsAligned(reinterpret_cast<intptr_t>(data), kPointerAlignment));
73 ScriptData* result = new ScriptData(reinterpret_cast<byte*>(data), 91 ScriptData* result = new ScriptData(reinterpret_cast<byte*>(data),
74 total_size * sizeof(unsigned)); 92 total_size * sizeof(unsigned));
75 result->AcquireDataOwnership(); 93 result->AcquireDataOwnership();
76 return result; 94 return result;
77 } 95 }
78 96
79 97
80 } } // namespace v8::internal. 98 } } // namespace v8::internal.
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