| Index: src/preparse-data.cc
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| diff --git a/src/preparse-data.cc b/src/preparse-data.cc
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| new file mode 100644
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| index 0000000000000000000000000000000000000000..9a3677183efeefc1b4802e28bc1245380a895699
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| --- /dev/null
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| +++ b/src/preparse-data.cc
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| @@ -0,0 +1,180 @@
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| +// Copyright 2010 the V8 project authors. All rights reserved.
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| +// Redistribution and use in source and binary forms, with or without
|
| +// modification, are permitted provided that the following conditions are
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| +// met:
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| +//
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| +// * Redistributions of source code must retain the above copyright
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| +// notice, this list of conditions and the following disclaimer.
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| +// * Redistributions in binary form must reproduce the above
|
| +// copyright notice, this list of conditions and the following
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| +// disclaimer in the documentation and/or other materials provided
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| +// with the distribution.
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| +// * Neither the name of Google Inc. nor the names of its
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| +// contributors may be used to endorse or promote products derived
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| +// from this software without specific prior written permission.
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| +//
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| +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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| +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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| +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
| +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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| +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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| +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
| +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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| +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| +
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| +#include "../include/v8stdint.h"
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| +#include "globals.h"
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| +#include "checks.h"
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| +#include "allocation.h"
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| +#include "utils.h"
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| +#include "list-inl.h"
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| +#include "hashmap.h"
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| +#include "preparse-data.h"
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| +
|
| +namespace v8 {
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| +namespace internal {
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| +
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| +// ----------------------------------------------------------------------------
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| +// FunctionLoggingParserRecorder
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| +
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| +FunctionLoggingParserRecorder::FunctionLoggingParserRecorder()
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| + : function_store_(0),
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| + is_recording_(true),
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| + pause_count_(0) {
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| + preamble_[PreparseDataConstants::kMagicOffset] =
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| + PreparseDataConstants::kMagicNumber;
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| + preamble_[PreparseDataConstants::kVersionOffset] =
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| + PreparseDataConstants::kCurrentVersion;
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| + preamble_[PreparseDataConstants::kHasErrorOffset] = false;
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| + preamble_[PreparseDataConstants::kFunctionsSizeOffset] = 0;
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| + preamble_[PreparseDataConstants::kSymbolCountOffset] = 0;
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| + preamble_[PreparseDataConstants::kSizeOffset] = 0;
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| + ASSERT_EQ(6, PreparseDataConstants::kHeaderSize);
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| +#ifdef DEBUG
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| + prev_start_ = -1;
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| +#endif
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| +}
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| +
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| +
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| +void FunctionLoggingParserRecorder::LogMessage(int start_pos,
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| + int end_pos,
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| + const char* message,
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| + const char* arg_opt) {
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| + if (has_error()) return;
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| + preamble_[PreparseDataConstants::kHasErrorOffset] = true;
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| + function_store_.Reset();
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| + STATIC_ASSERT(PreparseDataConstants::kMessageStartPos == 0);
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| + function_store_.Add(start_pos);
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| + STATIC_ASSERT(PreparseDataConstants::kMessageEndPos == 1);
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| + function_store_.Add(end_pos);
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| + STATIC_ASSERT(PreparseDataConstants::kMessageArgCountPos == 2);
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| + function_store_.Add((arg_opt == NULL) ? 0 : 1);
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| + STATIC_ASSERT(PreparseDataConstants::kMessageTextPos == 3);
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| + WriteString(CStrVector(message));
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| + if (arg_opt) WriteString(CStrVector(arg_opt));
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| + is_recording_ = false;
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| +}
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| +
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| +
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| +void FunctionLoggingParserRecorder::WriteString(Vector<const char> str) {
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| + function_store_.Add(str.length());
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| + for (int i = 0; i < str.length(); i++) {
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| + function_store_.Add(str[i]);
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| + }
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| +}
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| +
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| +// ----------------------------------------------------------------------------
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| +// PartialParserRecorder - Record both function entries and symbols.
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| +
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| +Vector<unsigned> PartialParserRecorder::ExtractData() {
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| + int function_size = function_store_.size();
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| + int total_size = PreparseDataConstants::kHeaderSize + function_size;
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| + Vector<unsigned> data = Vector<unsigned>::New(total_size);
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| + preamble_[PreparseDataConstants::kFunctionsSizeOffset] = function_size;
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| + preamble_[PreparseDataConstants::kSymbolCountOffset] = 0;
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| + memcpy(data.start(), preamble_, sizeof(preamble_));
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| + int symbol_start = PreparseDataConstants::kHeaderSize + function_size;
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| + if (function_size > 0) {
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| + function_store_.WriteTo(data.SubVector(PreparseDataConstants::kHeaderSize,
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| + symbol_start));
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| + }
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| + return data;
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| +}
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| +
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| +
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| +// ----------------------------------------------------------------------------
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| +// CompleteParserRecorder - Record both function entries and symbols.
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| +
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| +CompleteParserRecorder::CompleteParserRecorder()
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| + : FunctionLoggingParserRecorder(),
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| + symbol_store_(0),
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| + symbol_entries_(0),
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| + symbol_table_(vector_compare),
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| + symbol_id_(0) {
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| +}
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| +
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| +
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| +void CompleteParserRecorder::LogSymbol(
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| + int start, const char* literal_chars, int length) {
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| + if (!is_recording_) return;
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| +
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| + Vector<const char> literal(literal_chars, length);
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| + int hash = vector_hash(literal);
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| + HashMap::Entry* entry = symbol_table_.Lookup(&literal, hash, true);
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| + int id = static_cast<int>(reinterpret_cast<intptr_t>(entry->value));
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| + if (id == 0) {
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| + // Put (symbol_id_ + 1) into entry and increment it.
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| + id = ++symbol_id_;
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| + entry->value = reinterpret_cast<void*>(id);
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| + Vector<Vector<const char> > symbol = symbol_entries_.AddBlock(1, literal);
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| + entry->key = &symbol[0];
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| + }
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| + WriteNumber(id - 1);
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| +}
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| +
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| +
|
| +Vector<unsigned> CompleteParserRecorder::ExtractData() {
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| + int function_size = function_store_.size();
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| + // Add terminator to symbols, then pad to unsigned size.
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| + int symbol_size = symbol_store_.size();
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| + int padding = sizeof(unsigned) - (symbol_size % sizeof(unsigned));
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| + symbol_store_.AddBlock(padding, PreparseDataConstants::kNumberTerminator);
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| + symbol_size += padding;
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| + int total_size = PreparseDataConstants::kHeaderSize + function_size
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| + + (symbol_size / sizeof(unsigned));
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| + Vector<unsigned> data = Vector<unsigned>::New(total_size);
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| + preamble_[PreparseDataConstants::kFunctionsSizeOffset] = function_size;
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| + preamble_[PreparseDataConstants::kSymbolCountOffset] = symbol_id_;
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| + memcpy(data.start(), preamble_, sizeof(preamble_));
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| + int symbol_start = PreparseDataConstants::kHeaderSize + function_size;
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| + if (function_size > 0) {
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| + function_store_.WriteTo(data.SubVector(PreparseDataConstants::kHeaderSize,
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| + symbol_start));
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| + }
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| + if (!has_error()) {
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| + symbol_store_.WriteTo(
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| + Vector<byte>::cast(data.SubVector(symbol_start, total_size)));
|
| + }
|
| + return data;
|
| +}
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| +
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| +
|
| +void CompleteParserRecorder::WriteNumber(int number) {
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| + ASSERT(number >= 0);
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| +
|
| + int mask = (1 << 28) - 1;
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| + for (int i = 28; i > 0; i -= 7) {
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| + if (number > mask) {
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| + symbol_store_.Add(static_cast<byte>(number >> i) | 0x80u);
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| + number &= mask;
|
| + }
|
| + mask >>= 7;
|
| + }
|
| + symbol_store_.Add(static_cast<byte>(number));
|
| +}
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| +
|
| +
|
| +} } // namespace v8::internal.
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|
|