src/interfaces/ecpg/include/ecpgtype.h

   1 /*
   2  * This file implements a data structure that is built and maintained by the
   3  * preprocessor.
   4  *
   5  * All types that can be handled for host variable declarations has to
   6  * be handled eventually.
   7  */
   8
   9 /*
  10  * Here are all the types that we are to handle. Note that it is the type
  11  * that is registered and that has nothing whatsoever to do with the storage
  12  * class.
  13  *
  14  * Simle types
  15  * integers: char, short, int, long (signed and unsigned)
  16  * floats: float, double
  17  *
  18  * Complex types:
  19  * VARCHAR, VARCHAR2 - Strings with length (maxlen is given in the declaration)
  20  * Arrays of simple types and of VARCHAR, VARCHAR2 (size given in declaration)
  21  * Records build of simple types, arrays and other structs.
  22  *
  23  * Complicating things:
  24  * typedefs and struct names!
  25  *
  26  * Conclusion:
  27  * This is a typically recursive definition. A structure of typed list elements
  28  * would probably work fine:
  29  */
  30 #ifdef __cplusplus
  31 extern          "C"
  32 {
  33 #endif
  34
  35         enum ECPGttype
  36         {
  37                 ECPGt_char = 1, ECPGt_unsigned_char, ECPGt_short, ECPGt_unsigned_short,
  38                 ECPGt_int, ECPGt_unsigned_int, ECPGt_long, ECPGt_unsigned_long,
  39                 ECPGt_bool,
  40                 ECPGt_float, ECPGt_double,
  41                 ECPGt_varchar, ECPGt_varchar2,
  42                 ECPGt_array,
  43                 ECPGt_struct,
  44                 ECPGt_union,
  45                 ECPGt_char_variable,
  46                 ECPGt_EOIT,                             /* End of insert types. */
  47                 ECPGt_EORT,                             /* End of result types. */
  48                 ECPGt_NO_INDICATOR,             /* no indicator */
  49                 ECPGt_long_long, ECPGt_unsigned_long_long,
  50                 ECPGt_descriptor                /* sql descriptor, no C variable */
  51         };
  52
  53         /* descriptor items */
  54         enum ECPGdtype
  55         {
  56                 ECPGd_count = 1,
  57                 ECPGd_data,
  58                 ECPGd_di_code,
  59                 ECPGd_di_precision,
  60                 ECPGd_indicator,
  61                 ECPGd_key_member,
  62                 ECPGd_length,
  63                 ECPGd_name,
  64                 ECPGd_nullable,
  65                 ECPGd_octet,
  66                 ECPGd_precision,
  67                 ECPGd_ret_length,
  68                 ECPGd_ret_octet,
  69                 ECPGd_scale,
  70                 ECPGd_type,
  71                 ECPGd_EODT,                             /* End of descriptor types. */
  72                 ECPGd_cardinality
  73         };
  74
  75 #define IS_SIMPLE_TYPE(type) (((type) >= ECPGt_char && (type) <= ECPGt_varchar2) || ((type)>=ECPGt_long_long && (type) <= ECPGt_unsigned_long_long))
  76
  77 #ifdef __cplusplus
  78 }
  79
  80 #endif