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#ifndef ADC_CPP_PREPROC_HXX
#define ADC_CPP_PREPROC_HXX



// USED SERVICES
    // BASE CLASSES
    // COMPONENTS
#include <deque>
    // PARAMETERS

class CharacterSource;


namespace cpp
{

class Token;
class CodeExplorer;
class DefineDescription;


class PreProcessor
{
  public:
    typedef std::map< String, DefineDescription* > MacroMap;

    // LIFECYCLE
                        PreProcessor();
                        ~PreProcessor();
    // OPERATONS
    void                AssignPartners(
                            CodeExplorer &      o_rCodeExplorer,
                            CharacterSource &   o_rCharSource,
                            const MacroMap &    i_rCurValidDefines );
    void                Process_Token(
                            cpp::Token &        let_drToken );
    void                UnblockMacro(
                            const char *        i_sMacroName );
  private:
    public: // Necessary for instantiation of static variable:
    enum E_State
    {
        plain = 0,
        expect_macro_bracket_left,
        expect_macro_param,
        state_MAX
    };
    typedef void (PreProcessor::*                   F_TOKENPROC )(cpp::Token &);
    void                On_plain( cpp::Token & );
    void                On_expect_macro_bracket_left( cpp::Token & );
    void                On_expect_macro_param( cpp::Token & );

    private:  // Reprivate again:
    typedef std::deque< DYN cpp::Token * >          TokenQueue;
    typedef StringVector                  List_MacroParams;


    bool                CheckForDefine(
                            cpp::Token &        let_drToken );
    void                InterpretMacro();

    // DATA
    static F_TOKENPROC  aTokProcs[state_MAX];
        // Referenced extern objects
    CodeExplorer *      pCppExplorer;
    CharacterSource *   pSourceText;
    const MacroMap *    pCurValidDefines;

        // internal data
    TokenQueue          aTokens;

    E_State             eState;

    DefineDescription * pCurMacro;
    DYN Token *         dpCurMacroName;
    List_MacroParams    aCurMacroParams;
    csv::StreamStr      aCurParamText;

    intt                nBracketInParameterCounter;
    StringVector        aBlockedMacroNames;
};



}   // end namespace cpp

#endif

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