ACE/ace/Svc_Conf_Lexer.h

   1 // -*- C++ -*-
   2
   3 //=========================================================================
   4 /**
   5  * @file Svc_Conf_Lexer.h
   6  *
   7  * This class is a hand-coded replacement for the lexer generated from
   8  * Svc_Conf.l that correctly supports Unicode.
   9  *
  10  * @author Chad Elliott <elliott_c@ociweb.com>
  11  */
  12 //=========================================================================
  13
  14 #ifndef SVC_CONF_LEXER_H
  15 #define SVC_CONF_LEXER_H
  16
  17 #include /**/ "ace/pre.h"
  18 #include "ace/Svc_Conf.h"
  19
  20 #if (ACE_USES_CLASSIC_SVC_CONF == 1)
  21 #include "ace/Encoding_Converter_Factory.h"
  22
  23 class ACE_Encoding_Converter;
  24
  25 ACE_BEGIN_VERSIONED_NAMESPACE_DECL
  26
  27 /** This class lexes the classic ACE Service Configurator language.
  28  * The entry point is similar to what flex would generate.  However, it
  29  * is a static method in this class (which is really just name space).
  30  */
  31 class ACE_Svc_Conf_Lexer
  32 {
  33 public:
  34   /// This is similar to the C function, ace_yylex, which a bison
  35   /// generated parser expects.  It returns information in the ace_yylval
  36   /// parameter and uses input stored in the param parameter.
  37   static int yylex (YYSTYPE* ace_yylval,
  38                     ACE_Svc_Conf_Param* param);
  39
  40 private:
  41   static size_t input(ACE_Svc_Conf_Param* param, char* buf, size_t max_size);
  42
  43   static int scan (YYSTYPE* ace_yylval, ACE_Svc_Conf_Param* param);
  44
  45 #if defined (ACE_USES_WCHAR)
  46   static bool convert_to_utf8 (
  47                    ACE_Svc_Conf_Param* param,
  48                    size_t skip_bytes,
  49                    ACE_Encoding_Converter_Factory::Encoding_Hint hint);
  50   static bool convert_from_utf8 (ACE_Encoding_Converter* converter,
  51                                  const char* source,
  52                                  size_t source_size,
  53                                  ACE_TCHAR* target,
  54                                  size_t target_size,
  55                                  size_t& length);
  56   static ACE_Encoding_Converter_Factory::Encoding_Hint
  57                    locate_bom (char* source,
  58                                size_t source_size,
  59                                size_t& bytes_used);
  60 #endif /* ACE_USES_WCHAR */
  61 };
  62
  63 ACE_END_VERSIONED_NAMESPACE_DECL
  64 #endif /* ACE_USES_CLASSIC_SVC_CONF = 1 */
  65
  66 #include /**/ "ace/post.h"
  67
  68 #endif /* SVC_CONF_LEXER_H */