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// 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.
#include "../include/v8stdint.h"
#include "globals.h"
#include "checks.h"
#include "allocation.h"
#include "utils.h"
#include "list-inl.h"
#include "hashmap.h"
#include "preparse-data.h"
namespace v8 {
namespace internal {
// ----------------------------------------------------------------------------
// FunctionLoggingParserRecorder
FunctionLoggingParserRecorder::FunctionLoggingParserRecorder()
: function_store_(0),
is_recording_(true),
pause_count_(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);
#ifdef DEBUG
prev_start_ = -1;
#endif
}
void FunctionLoggingParserRecorder::LogMessage(int start_pos,
int end_pos,
const char* message,
const char* arg_opt) {
if (has_error()) return;
preamble_[PreparseDataConstants::kHasErrorOffset] = true;
function_store_.Reset();
STATIC_ASSERT(PreparseDataConstants::kMessageStartPos == 0);
function_store_.Add(start_pos);
STATIC_ASSERT(PreparseDataConstants::kMessageEndPos == 1);
function_store_.Add(end_pos);
STATIC_ASSERT(PreparseDataConstants::kMessageArgCountPos == 2);
function_store_.Add((arg_opt == NULL) ? 0 : 1);
STATIC_ASSERT(PreparseDataConstants::kMessageTextPos == 3);
WriteString(CStrVector(message));
if (arg_opt) WriteString(CStrVector(arg_opt));
is_recording_ = false;
}
void FunctionLoggingParserRecorder::WriteString(Vector<const char> str) {
function_store_.Add(str.length());
for (int i = 0; i < str.length(); i++) {
function_store_.Add(str[i]);
}
}
// ----------------------------------------------------------------------------
// PartialParserRecorder - Record both function entries and symbols.
Vector<unsigned> PartialParserRecorder::ExtractData() {
int function_size = function_store_.size();
int total_size = PreparseDataConstants::kHeaderSize + function_size;
Vector<unsigned> data = Vector<unsigned>::New(total_size);
preamble_[PreparseDataConstants::kFunctionsSizeOffset] = function_size;
preamble_[PreparseDataConstants::kSymbolCountOffset] = 0;
memcpy(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));
}
return data;
}
// ----------------------------------------------------------------------------
// CompleteParserRecorder - Record both function entries and symbols.
CompleteParserRecorder::CompleteParserRecorder()
: FunctionLoggingParserRecorder(),
literal_chars_(0),
symbol_store_(0),
symbol_keys_(0),
symbol_table_(vector_compare),
symbol_id_(0) {
}
void CompleteParserRecorder::LogSymbol(int start,
int hash,
bool is_ascii,
Vector<const byte> literal_bytes) {
Key key = { is_ascii, literal_bytes };
HashMap::Entry* entry = symbol_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));
Vector<unsigned> data = Vector<unsigned>::New(total_size);
preamble_[PreparseDataConstants::kFunctionsSizeOffset] = function_size;
preamble_[PreparseDataConstants::kSymbolCountOffset] = symbol_id_;
memcpy(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)));
}
return data;
}
void CompleteParserRecorder::WriteNumber(int number) {
ASSERT(number >= 0);
int mask = (1 << 28) - 1;
for (int i = 28; i > 0; i -= 7) {
if (number > mask) {
symbol_store_.Add(static_cast<byte>(number >> i) | 0x80u);
number &= mask;
}
mask >>= 7;
}
symbol_store_.Add(static_cast<byte>(number));
}
} } // namespace v8::internal.
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