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      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 
      5 #include "include/v8stdint.h"
      6 #include "src/base/logging.h"
      7 #include "src/compiler.h"
      8 #include "src/globals.h"
      9 #include "src/hashmap.h"
     10 #include "src/preparse-data.h"
     11 #include "src/preparse-data-format.h"
     12 
     13 namespace v8 {
     14 namespace internal {
     15 
     16 
     17 CompleteParserRecorder::CompleteParserRecorder()
     18     : function_store_(0) {
     19   preamble_[PreparseDataConstants::kMagicOffset] =
     20       PreparseDataConstants::kMagicNumber;
     21   preamble_[PreparseDataConstants::kVersionOffset] =
     22       PreparseDataConstants::kCurrentVersion;
     23   preamble_[PreparseDataConstants::kHasErrorOffset] = false;
     24   preamble_[PreparseDataConstants::kFunctionsSizeOffset] = 0;
     25   preamble_[PreparseDataConstants::kSizeOffset] = 0;
     26   DCHECK_EQ(5, PreparseDataConstants::kHeaderSize);
     27 #ifdef DEBUG
     28   prev_start_ = -1;
     29 #endif
     30 }
     31 
     32 
     33 void CompleteParserRecorder::LogMessage(int start_pos,
     34                                         int end_pos,
     35                                         const char* message,
     36                                         const char* arg_opt,
     37                                         bool is_reference_error) {
     38   if (HasError()) return;
     39   preamble_[PreparseDataConstants::kHasErrorOffset] = true;
     40   function_store_.Reset();
     41   STATIC_ASSERT(PreparseDataConstants::kMessageStartPos == 0);
     42   function_store_.Add(start_pos);
     43   STATIC_ASSERT(PreparseDataConstants::kMessageEndPos == 1);
     44   function_store_.Add(end_pos);
     45   STATIC_ASSERT(PreparseDataConstants::kMessageArgCountPos == 2);
     46   function_store_.Add((arg_opt == NULL) ? 0 : 1);
     47   STATIC_ASSERT(PreparseDataConstants::kIsReferenceErrorPos == 3);
     48   function_store_.Add(is_reference_error ? 1 : 0);
     49   STATIC_ASSERT(PreparseDataConstants::kMessageTextPos == 4);
     50   WriteString(CStrVector(message));
     51   if (arg_opt != NULL) WriteString(CStrVector(arg_opt));
     52 }
     53 
     54 
     55 void CompleteParserRecorder::WriteString(Vector<const char> str) {
     56   function_store_.Add(str.length());
     57   for (int i = 0; i < str.length(); i++) {
     58     function_store_.Add(str[i]);
     59   }
     60 }
     61 
     62 
     63 ScriptData* CompleteParserRecorder::GetScriptData() {
     64   int function_size = function_store_.size();
     65   int total_size = PreparseDataConstants::kHeaderSize + function_size;
     66   unsigned* data = NewArray<unsigned>(total_size);
     67   preamble_[PreparseDataConstants::kFunctionsSizeOffset] = function_size;
     68   MemCopy(data, preamble_, sizeof(preamble_));
     69   if (function_size > 0) {
     70     function_store_.WriteTo(Vector<unsigned>(
     71         data + PreparseDataConstants::kHeaderSize, function_size));
     72   }
     73   DCHECK(IsAligned(reinterpret_cast<intptr_t>(data), kPointerAlignment));
     74   ScriptData* result = new ScriptData(reinterpret_cast<byte*>(data),
     75                                       total_size * sizeof(unsigned));
     76   result->AcquireDataOwnership();
     77   return result;
     78 }
     79 
     80 
     81 } }  // namespace v8::internal.
     82