// Copyright 2010 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-// * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-// * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following
-// disclaimer in the documentation and/or other materials provided
-// with the distribution.
-// * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived
-// from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
#include "../include/v8stdint.h"
namespace internal {
-template <typename Char>
-static int vector_hash(Vector<const Char> string) {
- int hash = 0;
- for (int i = 0; i < string.length(); i++) {
- int c = static_cast<int>(string[i]);
- hash += c;
- hash += (hash << 10);
- hash ^= (hash >> 6);
- }
- return hash;
-}
-
-
-static bool vector_compare(void* a, void* b) {
- CompleteParserRecorder::Key* string1 =
- reinterpret_cast<CompleteParserRecorder::Key*>(a);
- CompleteParserRecorder::Key* string2 =
- reinterpret_cast<CompleteParserRecorder::Key*>(b);
- if (string1->is_one_byte != string2->is_one_byte) return false;
- int length = string1->literal_bytes.length();
- if (string2->literal_bytes.length() != length) return false;
- return memcmp(string1->literal_bytes.start(),
- string2->literal_bytes.start(), length) == 0;
-}
-
-
CompleteParserRecorder::CompleteParserRecorder()
- : function_store_(0),
- literal_chars_(0),
- symbol_store_(0),
- symbol_keys_(0),
- string_table_(vector_compare),
- symbol_id_(0) {
+ : function_store_(0) {
preamble_[PreparseDataConstants::kMagicOffset] =
PreparseDataConstants::kMagicNumber;
preamble_[PreparseDataConstants::kVersionOffset] =
PreparseDataConstants::kCurrentVersion;
preamble_[PreparseDataConstants::kHasErrorOffset] = false;
preamble_[PreparseDataConstants::kFunctionsSizeOffset] = 0;
- preamble_[PreparseDataConstants::kSymbolCountOffset] = 0;
preamble_[PreparseDataConstants::kSizeOffset] = 0;
- ASSERT_EQ(6, PreparseDataConstants::kHeaderSize);
+ ASSERT_EQ(5, PreparseDataConstants::kHeaderSize);
#ifdef DEBUG
prev_start_ = -1;
#endif
- should_log_symbols_ = true;
}
void CompleteParserRecorder::LogMessage(int start_pos,
- int end_pos,
- const char* message,
- const char* arg_opt) {
+ int end_pos,
+ const char* message,
+ const char* arg_opt,
+ bool is_reference_error) {
if (has_error()) return;
preamble_[PreparseDataConstants::kHasErrorOffset] = true;
function_store_.Reset();
function_store_.Add(end_pos);
STATIC_ASSERT(PreparseDataConstants::kMessageArgCountPos == 2);
function_store_.Add((arg_opt == NULL) ? 0 : 1);
- STATIC_ASSERT(PreparseDataConstants::kMessageTextPos == 3);
+ STATIC_ASSERT(PreparseDataConstants::kIsReferenceErrorPos == 3);
+ function_store_.Add(is_reference_error ? 1 : 0);
+ STATIC_ASSERT(PreparseDataConstants::kMessageTextPos == 4);
WriteString(CStrVector(message));
if (arg_opt != NULL) WriteString(CStrVector(arg_opt));
- should_log_symbols_ = false;
}
}
-void CompleteParserRecorder::LogOneByteSymbol(int start,
- Vector<const uint8_t> literal) {
- ASSERT(should_log_symbols_);
- int hash = vector_hash(literal);
- LogSymbol(start, hash, true, literal);
-}
-
-
-void CompleteParserRecorder::LogTwoByteSymbol(int start,
- Vector<const uint16_t> literal) {
- ASSERT(should_log_symbols_);
- int hash = vector_hash(literal);
- LogSymbol(start, hash, false, Vector<const byte>::cast(literal));
-}
-
-
-void CompleteParserRecorder::LogSymbol(int start,
- int hash,
- bool is_one_byte,
- Vector<const byte> literal_bytes) {
- Key key = { is_one_byte, literal_bytes };
- HashMap::Entry* entry = string_table_.Lookup(&key, hash, true);
- int id = static_cast<int>(reinterpret_cast<intptr_t>(entry->value));
- if (id == 0) {
- // Copy literal contents for later comparison.
- key.literal_bytes =
- Vector<const byte>::cast(literal_chars_.AddBlock(literal_bytes));
- // Put (symbol_id_ + 1) into entry and increment it.
- id = ++symbol_id_;
- entry->value = reinterpret_cast<void*>(id);
- Vector<Key> symbol = symbol_keys_.AddBlock(1, key);
- entry->key = &symbol[0];
- }
- WriteNumber(id - 1);
-}
-
-
Vector<unsigned> CompleteParserRecorder::ExtractData() {
int function_size = function_store_.size();
- // Add terminator to symbols, then pad to unsigned size.
- int symbol_size = symbol_store_.size();
- int padding = sizeof(unsigned) - (symbol_size % sizeof(unsigned));
- symbol_store_.AddBlock(padding, PreparseDataConstants::kNumberTerminator);
- symbol_size += padding;
- int total_size = PreparseDataConstants::kHeaderSize + function_size
- + (symbol_size / sizeof(unsigned));
+ int total_size = PreparseDataConstants::kHeaderSize + function_size;
Vector<unsigned> data = Vector<unsigned>::New(total_size);
preamble_[PreparseDataConstants::kFunctionsSizeOffset] = function_size;
- preamble_[PreparseDataConstants::kSymbolCountOffset] = symbol_id_;
OS::MemCopy(data.start(), preamble_, sizeof(preamble_));
- int symbol_start = PreparseDataConstants::kHeaderSize + function_size;
if (function_size > 0) {
function_store_.WriteTo(data.SubVector(PreparseDataConstants::kHeaderSize,
- symbol_start));
- }
- if (!has_error()) {
- symbol_store_.WriteTo(
- Vector<byte>::cast(data.SubVector(symbol_start, total_size)));
+ total_size));
}
return data;
}
-void CompleteParserRecorder::WriteNumber(int number) {
- // Split the number into chunks of 7 bits. Write them one after another (the
- // most significant first). Use the MSB of each byte for signalling that the
- // number continues. See ScriptDataImpl::ReadNumber for the reading side.
- ASSERT(number >= 0);
-
- int mask = (1 << 28) - 1;
- int i = 28;
- // 26 million symbols ought to be enough for anybody.
- ASSERT(number <= mask);
- while (number < mask) {
- mask >>= 7;
- i -= 7;
- }
- while (i > 0) {
- symbol_store_.Add(static_cast<byte>(number >> i) | 0x80u);
- number &= mask;
- mask >>= 7;
- i -= 7;
- }
- ASSERT(number < (1 << 7));
- symbol_store_.Add(static_cast<byte>(number));
-}
-
-
} } // namespace v8::internal.
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