Index: src/preparse-data.cc |
diff --git a/src/preparse-data.cc b/src/preparse-data.cc |
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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(), |
+ symbol_store_(0), |
+ symbol_entries_(0), |
+ symbol_table_(vector_compare), |
+ symbol_id_(0) { |
+} |
+ |
+ |
+void CompleteParserRecorder::LogSymbol( |
+ int start, const char* literal_chars, int length) { |
+ if (!is_recording_) return; |
+ |
+ Vector<const char> literal(literal_chars, length); |
+ int hash = vector_hash(literal); |
+ HashMap::Entry* entry = symbol_table_.Lookup(&literal, hash, true); |
+ int id = static_cast<int>(reinterpret_cast<intptr_t>(entry->value)); |
+ if (id == 0) { |
+ // Put (symbol_id_ + 1) into entry and increment it. |
+ id = ++symbol_id_; |
+ entry->value = reinterpret_cast<void*>(id); |
+ Vector<Vector<const char> > symbol = symbol_entries_.AddBlock(1, literal); |
+ 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. |