Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 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 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 5 | #include "src/parsing/preparse-data.h" |
| 6 | #include "src/base/hashmap.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 7 | #include "src/base/logging.h" |
| 8 | #include "src/globals.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 9 | #include "src/parsing/parser.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 10 | #include "src/parsing/preparse-data-format.h" |
| 11 | |
| 12 | namespace v8 { |
| 13 | namespace internal { |
| 14 | |
| 15 | |
| 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 | |
| 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 | |
| 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 | |
| 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. |