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 // Copyright (c) 2010, Google Inc.

 // 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.

 //

 // module_comparer.h: ModuleComparer reads a string format of symbol file, and

 // loads the symbol into both BasicSourceLineResolver::Module and

 // FastSourceLineResolve::Module.  It then traverses both Modules and compare

 // the content of data to verify the correctness of new fast module.

 // ModuleCompare class is a tool to verify correctness of a loaded

 // FastSourceLineResolver::Module instance, i.e., in-memory representation of

 // parsed symbol.  ModuleComparer class should be used for testing purpose only,

 // e.g., in fast_source_line_resolver_unittest.

 //

 // Author: lambxsy@google.com (Siyang Xie)

 #ifndef PROCESSOR_MODULE_COMPARER_H__

 #define PROCESSOR_MODULE_COMPARER_H__

 #include <string>

 #include "processor/basic_source_line_resolver_types.h"

 #include "processor/fast_source_line_resolver_types.h"

 #include "processor/module_serializer.h"

 #include "processor/windows_frame_info.h"

 namespace google_breakpad {

 class ModuleComparer {

  public:

   ModuleComparer(): fast_resolver_(new FastSourceLineResolver),

                    basic_resolver_(new BasicSourceLineResolver) { }

   ~ModuleComparer() {

     delete fast_resolver_;

     delete basic_resolver_;

   }

   // BasicSourceLineResolver loads its module using the symbol data,

   // ModuleSerializer serialize the loaded module into a memory chunk,

   // FastSourceLineResolver loads its module using the serialized memory chunk,

   // Then, traverse both modules together and compare underlying data

   // return true if both modules contain exactly same data.

   bool Compare(const string &symbol_data);

  private:

   typedef BasicSourceLineResolver::Module BasicModule;

   typedef FastSourceLineResolver::Module FastModule;

   typedef BasicSourceLineResolver::Function BasicFunc;

   typedef FastSourceLineResolver::Function FastFunc;

   typedef BasicSourceLineResolver::Line BasicLine;

   typedef FastSourceLineResolver::Line FastLine;

   typedef BasicSourceLineResolver::PublicSymbol BasicPubSymbol;

   typedef FastSourceLineResolver::PublicSymbol FastPubSymbol;

   typedef WindowsFrameInfo WFI;

   bool CompareModule(const BasicModule *oldmodule,

                      const FastModule *newmodule) const;

   bool CompareFunction(const BasicFunc *oldfunc, const FastFunc *newfunc) const;

   bool CompareLine(const BasicLine *oldline, const FastLine *newline) const;

   bool ComparePubSymbol(const BasicPubSymbol*, const FastPubSymbol*) const;

   bool CompareWFI(const WindowsFrameInfo&, const WindowsFrameInfo&) const;

   // Compare ContainedRangeMap

   bool CompareCRM(const ContainedRangeMap<MemAddr, linked_ptr<WFI> >*,

                   const StaticContainedRangeMap<MemAddr, char>*) const;

   FastSourceLineResolver *fast_resolver_;

   BasicSourceLineResolver *basic_resolver_;

   ModuleSerializer serializer_;

 };

 }  // namespace google_breakpad

 #endif  // PROCESSOR_MODULE_COMPARER_H__