/*=========================================================================

  Program:   CMake - Cross-Platform Makefile Generator
  Module:    $RCSfile$
  Language:  C++
  Date:      $Date$
  Version:   $Revision$

  Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
  See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#ifndef cmCommandArgumentParserHelper_h 
#define cmCommandArgumentParserHelper_h

#include "cmStandardIncludes.h"

#define YYSTYPE cmCommandArgumentParserHelper::ParserType
#define YYSTYPE_IS_DECLARED
#define YY_EXTRA_TYPE cmCommandArgumentParserHelper*
#define YY_DECL int cmCommandArgument_yylex(YYSTYPE* yylvalp, yyscan_t yyscanner)

/** \class cmCommandArgumentParserHelper
 * \brief Helper class for parsing java source files
 *
 * Finds dependencies for java file and list of outputs
 */

class cmMakefile;

class cmCommandArgumentParserHelper
{
public:
  typedef struct {
    char* str;
  } ParserType;

  cmCommandArgumentParserHelper();
  ~cmCommandArgumentParserHelper();

  int ParseString(const char* str, int verb);
  int ParseFile(const char* file);

  // For the lexer:
  void AllocateParserType(cmCommandArgumentParserHelper::ParserType* pt, 
    const char* str, int len = 0);

  int LexInput(char* buf, int maxlen);
  void Error(const char* str);

  // For yacc
  void AddClassFound(const char* sclass);
  void PrepareElement(ParserType* opt);
  void DeallocateParserType(char** pt);
  void CheckEmpty(int line, int cnt, ParserType* pt);
  void StartClass(const char* cls);
  void EndClass();
  void AddPackagesImport(const char* sclass);
  void SetCurrentCombine(const char* cmb) { this->CurrentCombine = cmb; }
  const char* GetCurrentCombine() { return this->CurrentCombine.c_str(); }
  void UpdateCombine(const char* str1, const char* str2);
  void Append(const char* str);
  char* CombineUnions(char* in1, char* in2);

  char* ExpandSpecialVariable(const char* key, const char* var);
  char* ExpandVariable(const char* var);
  void SetResult(const char* value);

  void SetMakefile(const cmMakefile* mf);

  std::string& GetResult() { return m_Result; }

  void SetLineFile(long line, const char* file);
  void SetEscapeQuotes(bool b) { m_EscapeQuotes = b; }

  const char* GetError() { return m_Error.c_str(); }

  char m_EmptyVariable[1];
  char m_DCURLYVariable[3];
  char m_RCURLYVariable[3];
  char m_ATVariable[3];
  char m_DOLLARVariable[3];
  char m_LCURLYVariable[3];
  char m_BSLASHVariable[3];

private:
  cmStdString::size_type InputBufferPos;
  cmStdString InputBuffer;
  std::vector<char> OutputBuffer;
  int CurrentLine;
  int UnionsAvailable;
  int Verbose;

  std::vector<char*> Allocates;
  std::string CurrentCombine;

  void PrintClasses();

  void Print(const char* place, const char* str);
  void SafePrintMissing(const char* str, int line, int cnt);

  char* AddString(const char* str);

  void CleanupParser();

  std::set<char*> m_Variables;
  const cmMakefile* m_Makefile;
  std::string m_Result;
  const char* m_FileName;
  long m_FileLine;

  bool m_EscapeQuotes;

  std::string m_Error;

};

#endif