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/* 
|| This file is part of Pike. For copyright information see COPYRIGHT. 
|| Pike is distributed under GPL, LGPL and MPL. See the file COPYING 
|| for more information. 
*/ 
 
#ifdef ERR_DECLARE 
#define DECLARE_PURE_ERROR(NAME, SCNAME, INHERIT) \ 
  PMOD_EXPORT struct program *PIKE_CONCAT(NAME,_error_program); 
#define DECLARE_ERROR(NAME, SCNAME, INHERIT, DECL) \ 
  DECLARE_PURE_ERROR(NAME, SCNAME, INHERIT)        \ 
  ptrdiff_t PIKE_CONCAT(NAME,_error_offset);       \ 
  DECL 
 
#define ERR_FUNC_SAVE_ID(VAR, NAME, FUNC, TYPE, FLAGS) static int VAR; 
 
#endif 
 
#ifdef ERR_EXT_DECLARE 
#define DECLARE_PURE_ERROR(NAME, SCNAME, INHERIT) \ 
  PMOD_EXPORT extern struct program *PIKE_CONCAT(NAME,_error_program); 
#define DECLARE_ERROR(NAME, SCNAME, INHERIT, DECL)  \ 
  DECLARE_PURE_ERROR(NAME, SCNAME, INHERIT)             \ 
  extern ptrdiff_t PIKE_CONCAT(NAME,_error_offset);     \ 
  struct PIKE_CONCAT(NAME,_error_struct) {              \ 
    DECL                                                \ 
  }; 
 
#define ERR_VAR(TYPE,CTYPE,RUNTYPE,NAME) TYPE NAME ; 
#define ERR_CONST(TYPE, NAME, VALUE) 
 
/* Some compilers (eg cl) don't like empty structs... */ 
/* #define EMPTY ERR_VAR(INT_TYPE, int, PIKE_T_INT, ignored__) */ 
 
#endif /* ERR_EXT_DECLARE */ 
 
#ifdef ERR_SETUP 
#define DECLARE_PURE_ERROR(NAME, SCNAME, INHERIT) do {      \ 
    start_new_program();                                \ 
    INHERIT                                             \ 
    add_string_constant("error_type", #SCNAME, 0);      \ 
    add_string_constant ("error_name", "Error." #SCNAME, ID_PRIVATE|ID_USED); \ 
    add_integer_constant("is_" #NAME "_error",1,0);     \ 
    PIKE_CONCAT(NAME,_error_program)=end_program();     \ 
    add_program_constant( #SCNAME "Error",PIKE_CONCAT(NAME,_error_program),0); \ 
  } while(0); 
#define DECLARE_ERROR(NAME, SCNAME, INHERIT, DECL) do {                     \ 
    ptrdiff_t current_offset=0;                                         \ 
    struct PIKE_CONCAT(NAME,_error_struct) foo;                         \ 
    DECLARE_PURE_ERROR(NAME, SCNAME,                                    \ 
                       INHERIT                                          \ 
                       current_offset =                                 \ 
                       PIKE_CONCAT(NAME,_error_offset) =                \ 
                       ADD_STORAGE(struct PIKE_CONCAT(NAME,_error_struct)); \ 
                       DECL)                                            \ 
  } while(0); 
 
#define ERR_VAR(TYPE,CTYPE,RUNTYPE,NAME2) \ 
  MAP_VARIABLE(#NAME2, CTYPE, 0, \ 
               current_offset + (((char *)&(foo.NAME2))-((char *)&foo)), RUNTYPE); 
#define ERR_CONST(TYPE, NAME, VALUE) \ 
  PIKE_CONCAT3 (add_, TYPE, _constant) (NAME, VALUE, 0); 
 
/* Reference foo just to avoid warning. */ 
/* #define EMPTY (void) &foo; */ 
 
#define ERR_INHERIT(NAME) \ 
  low_inherit(PIKE_CONCAT(NAME,_error_program),0,0,0,0,0); 
 
#define ERR_FUNC(NAME,FUNC,TYPE,FLAGS) \ 
  ADD_FUNCTION(NAME,FUNC,TYPE,FLAGS); 
 
#define ERR_FUNC_SAVE_ID(VAR, NAME, FUNC, TYPE, FLAGS) \ 
  VAR = ADD_FUNCTION(NAME,FUNC,TYPE,FLAGS); 
 
#endif 
 
#ifdef ERR_CLEANUP 
#define DECLARE_PURE_ERROR(NAME, SCNAME, INHERIT)   \ 
  if(PIKE_CONCAT(NAME,_error_program)) {                \ 
    free_program(PIKE_CONCAT(NAME,_error_program));     \ 
    PIKE_CONCAT(NAME,_error_program)=0;                 \ 
  } 
#define DECLARE_ERROR(NAME, SCNAME, INHERIT, DECL)  \ 
  DECLARE_PURE_ERROR(NAME, SCNAME, INHERIT) 
#endif 
 
#ifndef EMPTY 
#define EMPTY 
#endif 
 
#ifndef ERR_INHERIT 
#define ERR_INHERIT(NAME) 
#endif 
 
#ifndef ERR_VAR 
#define ERR_VAR(TYPE,CTYPE,RUNTYPE,NAME) 
#endif 
 
#ifndef ERR_CONST 
#define ERR_CONST(TYPE, NAME, VALUE) 
#endif 
 
#ifndef ERR_FUNC 
#define ERR_FUNC(NAME,FUNC,TYPE,FLAGS) 
#endif 
 
#ifndef ERR_FUNC_SAVE_ID 
#define ERR_FUNC_SAVE_ID(VAR, NAME, FUNC, TYPE, FLAGS) 
#endif 
 
DECLARE_ERROR(generic, Generic, EMPTY , 
  ERR_VAR(struct pike_string *,tStr,PIKE_T_STRING,error_message) 
  ERR_VAR(struct array *,tArray,PIKE_T_ARRAY,error_backtrace) 
  ERR_FUNC("cast",f_error_cast,tFunc(tString,tArray),ID_PROTECTED) 
  ERR_FUNC("`[]",f_error_index,tFunc(tInt01,tMixed),ID_PROTECTED) 
  ERR_FUNC("_sizeof",f_error__sizeof,tFunc(tNone,tInt2),ID_PROTECTED) 
  ERR_FUNC("_indices",f_error__indices,tFunc(tNone,tArr(tInt01)),ID_PROTECTED) 
  ERR_FUNC("_values",f_error__values,tFunc(tNone,tArr(tOr(tStr,tArr(tMixed)))),ID_PROTECTED) 
  ERR_FUNC("describe",f_error_describe,tFunc(tVoid,tString),0) 
  ERR_FUNC_SAVE_ID (generic_err_message_fun, "message", f_error_message, 
                    tFunc(tVoid,tString), 0) 
  ERR_FUNC_SAVE_ID (generic_err_backtrace_fun, "backtrace", f_error_backtrace, 
                    tFunc(tVoid,tArr(tMixed)),0) 
  ERR_FUNC("_sprintf", f_error__sprintf, 
           tFunc(tOr(tInt,tVoid) tOr(tMapping,tVoid),tString), ID_PROTECTED) 
  ERR_FUNC("_is_type", f_error__is_type, tFunc(tString, tInt01), ID_PROTECTED) 
  ERR_FUNC("create",f_error_create,tFunc(tStr tOr(tVoid,tArr(tMixed)),tVoid),ID_PROTECTED) 
) 
 
DECLARE_ERROR(index, Index, 
              ERR_INHERIT(generic), 
  ERR_VAR(struct svalue, tMix, PIKE_T_MIXED, value) 
  ERR_VAR(struct svalue, tMix, PIKE_T_MIXED, index) 
) 
 
DECLARE_ERROR(bad_argument, BadArgument, 
              ERR_INHERIT(generic), 
  ERR_VAR(INT_TYPE, tInt, PIKE_T_INT, which_argument) 
  ERR_VAR(struct pike_string *, tStr,PIKE_T_STRING,expected_type) 
  ERR_VAR(struct svalue, tMix, PIKE_T_MIXED, got_value) 
) 
 
DECLARE_ERROR(math, Math, 
              ERR_INHERIT(generic), 
  ERR_VAR(struct svalue, tMix, PIKE_T_MIXED, number) 
) 
 
DECLARE_ERROR(resource, Resource, 
              ERR_INHERIT(generic), 
  ERR_VAR(struct pike_string *, tStr, PIKE_T_STRING,resource_type) 
  ERR_VAR(INT_TYPE, tInt, PIKE_T_INT, howmuch) 
) 
 
DECLARE_ERROR(permission, Permission, 
              ERR_INHERIT(generic), 
  ERR_VAR(struct pike_string *, tStr, PIKE_T_STRING,permission_type) 
) 
 
DECLARE_ERROR (decode, Decode, 
               ERR_INHERIT (generic), 
  ERR_VAR (struct pike_string *, tStr, PIKE_T_STRING, decode_string) 
) 
 
DECLARE_PURE_ERROR( 
  cpp, Cpp, 
  ERR_INHERIT(generic) 
  ERR_CONST (integer, "is_cpp_or_compilation_error", 1) 
) 
 
DECLARE_PURE_ERROR( 
  compilation, Compilation, 
  ERR_INHERIT(generic) 
  ERR_CONST (integer, "is_cpp_or_compilation_error", 1) 
) 
 
DECLARE_PURE_ERROR(master_load, MasterLoad, ERR_INHERIT (generic)) 
 
DECLARE_ERROR (module_load, ModuleLoad, 
               ERR_INHERIT (generic), 
  ERR_VAR (struct pike_string *, tStr, PIKE_T_STRING, path) 
  ERR_VAR (struct pike_string *, tStr, PIKE_T_STRING, reason) 
) 
 
#undef DECLARE_PURE_ERROR 
#undef DECLARE_ERROR 
#undef ERR_INHERIT 
#undef ERR_VAR 
#undef ERR_CONST 
#undef EMPTY 
#undef ERR_FUNC 
#undef ERR_FUNC_SAVE_ID 
 
#undef ERR_DECLARE 
#undef ERR_EXT_DECLARE 
#undef ERR_SETUP 
#undef ERR_CLEANUP