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#ifndef BOD_PARSER_BASE_INCLUDED
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#define BOD_PARSER_BASE_INCLUDED
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#include "../common/ext_list.h"
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#include "bod_text_parser.h"
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#include "token_stream.h"
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// I must get rid of COM S_OK definition to be able to use it later in enum
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#ifdef S_OK
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#undef S_OK
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#endif
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class bod_parser_base
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{
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	public:
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		enum ErrorSeverity
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		{
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			S_OK = 0,
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			S_Error,
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			S_Warning
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		};
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		enum ErrorCode
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		{
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			E_Error
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		};
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		enum ErrorFacility
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		{
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			F_Compiler
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		};
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		struct Error
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		{
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			int	code;
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			char text[255];
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			int line, col;
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			void makeCode(ErrorFacility f, ErrorSeverity s, ErrorCode e)
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			{
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				code=s << 24;
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				code|=f << 16;
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				code|=e;
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			}
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			ErrorSeverity severity() const { return (ErrorSeverity)(code >> 24); }
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			ErrorFacility facility() const { return (ErrorFacility)((code >> 16) & 0xff); }
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			bool failed() const { return (severity() & S_Error) > 0; }
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			bool warning() const { return (severity() & S_Warning) > 0; }
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			bool succeeded() const { return (severity() & S_OK) == 0; }
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			ErrorCode getCode() const { return (ErrorCode)(code & 0xFFFF); }
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		};
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	protected:
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		typedef ext::list<Error*> ErrorList;
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		typedef bod_text_parser::token token;
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		void error(const bod_text_parser::token *t, ErrorSeverity severity, const char *format, ...);
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	public:
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		typedef ErrorList::iterator iterator;
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		ErrorList errors;
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		virtual ~bod_parser_base() { clearErrors(); }
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		void clearErrors()
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		{
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			for(iterator &it=errors.begin(); it!=errors.end(); ++it){
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				delete *it;
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			}
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		}
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	protected:
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		token* loadValue(token_stream& is, const char *context="");
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		bool loadIntValue(token_stream& is, int *i, const char *context="");
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		bool loadDoubleValue(token_stream& is, double *d, const char *context="");
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		char * loadString(token_stream& is, const char *context="");
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		static bool ungetValue(token_stream& s);
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};
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#endif // !defined(BOD_PARSER_BASE_INCLUDED)