cb22561995-10-11Fredrik Hübinette (Hubbe) /*\ ||| This file a part of uLPC, and is copyright by Fredrik Hubinette ||| uLPC is distributed as GPL (General Public License) ||| See the files COPYING and DISCLAIMER for more information. \*/
5267b71995-08-09Fredrik Hübinette (Hubbe) #ifndef SVALUE_H #define SVALUE_H #include "types.h" struct array; struct mapping; struct list; struct object; struct program; struct lpc_string; struct callable; struct processing { struct processing *next; void *pointer_a, *pointer_b; }; union anything { struct callable *efun; struct array *array; struct mapping *mapping; struct list *list; struct object *object; struct program *program; struct lpc_string *string; INT32 *refs; INT32 integer; FLOAT_TYPE float_number; struct svalue *lval; /* only used on stack */ union anything *short_lval; /* only used on stack */ }; struct svalue {
39e0bd1996-06-09Fredrik Hübinette (Hubbe)  unsigned INT16 type;
5267b71995-08-09Fredrik Hübinette (Hubbe)  INT16 subtype; union anything u; }; #define T_ARRAY 0 #define T_MAPPING 1 #define T_LIST 2 #define T_OBJECT 3 #define T_FUNCTION 4 #define T_PROGRAM 5 #define T_STRING 6 #define T_FLOAT 7 #define T_INT 8
39e0bd1996-06-09Fredrik Hübinette (Hubbe) #define T_DELETED 246
bce86c1996-02-25Fredrik Hübinette (Hubbe) #define T_NOT 247 #define T_AND 248
0d202a1995-10-20Fredrik Hübinette (Hubbe) #define T_UNKNOWN 249
5267b71995-08-09Fredrik Hübinette (Hubbe) #define T_MANY 250 #define T_OR 251 #define T_SHORT_LVALUE 252 #define T_LVALUE 253 #define T_VOID 254 #define T_MIXED 255 #define BIT_ARRAY (1<<T_ARRAY) #define BIT_MAPPING (1<<T_MAPPING) #define BIT_LIST (1<<T_LIST) #define BIT_OBJECT (1<<T_OBJECT) #define BIT_FUNCTION (1<<T_FUNCTION) #define BIT_PROGRAM (1<<T_PROGRAM) #define BIT_STRING (1<<T_STRING) #define BIT_INT (1<<T_INT) #define BIT_FLOAT (1<<T_FLOAT)
4eb50a1996-05-16Fredrik Hübinette (Hubbe) /* Used to signifiy that this array might not be finished yet */ /* garbage collect uses this */ #define BIT_UNFINISHED (1<<15)
5267b71995-08-09Fredrik Hübinette (Hubbe) #define BIT_NOTHING 0
4eb50a1996-05-16Fredrik Hübinette (Hubbe) #define BIT_MIXED 0x7fff
5267b71995-08-09Fredrik Hübinette (Hubbe) /* Max type with ref count */ #define MAX_REF_TYPE T_STRING /* Max type handled by svalue primitives */ #define MAX_TYPE T_INT #define NUMBER_NUMBER 0 #define NUMBER_UNDEFINED 1 #define NUMBER_DESTRUCTED 2
bce86c1996-02-25Fredrik Hübinette (Hubbe) #define is_gt(a,b) is_lt(b,a)
07c0731996-06-21Fredrik Hübinette (Hubbe) #define IS_ZERO(X) ((X)->type==T_INT?(X)->u.integer==0:(1<<(X)->type)&(BIT_OBJECT|BIT_FUNCTION)?!svalue_is_true(X):0)
5267b71995-08-09Fredrik Hübinette (Hubbe)  #define check_destructed(S) \ do{ \ struct svalue *_s=(S); \ if((_s->type == T_OBJECT || _s->type==T_FUNCTION) && !_s->u.object->prog) { \ free_object(_s->u.object); \ _s->type = T_INT; \ _s->subtype = NUMBER_DESTRUCTED ; \ _s->u.integer = 0; \ } \ }while(0)
453f4c1996-08-12Fredrik Hübinette (Hubbe) /* var MUST be a variable!!! */ #define safe_check_destructed(var) do{ \ if((var->type == T_OBJECT || var->type==T_FUNCTION) && !var->u.object->prog) \ var=&dest_ob_zero; \ }while(0)
5267b71995-08-09Fredrik Hübinette (Hubbe) #define check_short_destructed(U,T) \ do{ \ union anything *_u=(U); \ if(( (1<<(T)) & (BIT_OBJECT | BIT_FUNCTION) ) && \ _u->object && !_u->object->prog) { \ free_object(_u->object); \ _u->object = 0; \ } \ }while(0) #ifdef DEBUG
39e0bd1996-06-09Fredrik Hübinette (Hubbe) #define check_type(T) if(T > MAX_TYPE && T!=T_LVALUE && T!=T_SHORT_LVALUE && T!=T_VOID && T!=T_DELETED) fatal("Type error\n")
5267b71995-08-09Fredrik Hübinette (Hubbe) #define check_refs(S) if((S)->type < MAX_REF_TYPE && (!(S)->u.refs || (S)->u.refs[0] < 0)) fatal("Svalue to object without references.\n") #define check_refs2(S,T) if((T) < MAX_REF_TYPE && (S)->refs && (S)->refs[0] <= 0) fatal("Svalue to object without references.\n") #else #define check_type(T) #define check_refs(S) #define check_refs2(S,T) #endif
453f4c1996-08-12Fredrik Hübinette (Hubbe) extern struct svalue dest_ob_zero;
5267b71995-08-09Fredrik Hübinette (Hubbe)  /* Prototypes begin here */ void free_short_svalue(union anything *s,TYPE_T type); void free_svalue(struct svalue *s);
fc76951996-02-17Fredrik Hübinette (Hubbe) void free_svalues(struct svalue *s,INT32 num, INT32 type_hint);
5267b71995-08-09Fredrik Hübinette (Hubbe) void assign_svalue_no_free(struct svalue *to, struct svalue *from); void assign_svalues_no_free(struct svalue *to, struct svalue *from,
fc76951996-02-17Fredrik Hübinette (Hubbe)  INT32 num, INT32 type_hint);
5267b71995-08-09Fredrik Hübinette (Hubbe) void assign_svalue(struct svalue *to, struct svalue *from);
99946c1996-02-17Fredrik Hübinette (Hubbe) void assign_svalues(struct svalue *to, struct svalue *from, INT32 num, TYPE_FIELD types);
5267b71995-08-09Fredrik Hübinette (Hubbe) void assign_to_short_svalue(union anything *u, TYPE_T type, struct svalue *s); void assign_to_short_svalue_no_free(union anything *u,
fc76951996-02-17Fredrik Hübinette (Hubbe)  TYPE_T type, struct svalue *s);
5267b71995-08-09Fredrik Hübinette (Hubbe) void assign_from_short_svalue_no_free(struct svalue *s, union anything *u, TYPE_T type); void assign_short_svalue_no_free(union anything *to, union anything *from, TYPE_T type); void assign_short_svalue(union anything *to, union anything *from, TYPE_T type);
07c0731996-06-21Fredrik Hübinette (Hubbe) unsigned INT32 hash_svalue(struct svalue *s); int svalue_is_true(struct svalue *s);
5267b71995-08-09Fredrik Hübinette (Hubbe) int is_eq(struct svalue *a, struct svalue *b); int low_is_equal(struct svalue *a, struct svalue *b, struct processing *p); int low_short_is_equal(const union anything *a, const union anything *b, TYPE_T type, struct processing *p); int is_equal(struct svalue *a,struct svalue *b);
07c0731996-06-21Fredrik Hübinette (Hubbe) int is_lt(struct svalue *a,struct svalue *b);
5267b71995-08-09Fredrik Hübinette (Hubbe) void describe_svalue(struct svalue *s,int indent,struct processing *p); void clear_svalues(struct svalue *s, INT32 num); void copy_svalues_recursively_no_free(struct svalue *to, struct svalue *from, INT32 num, struct processing *p); void check_short_svalue(union anything *u,TYPE_T type); void check_svalue(struct svalue *s);
b95bef1996-03-29Fredrik Hübinette (Hubbe) TYPE_FIELD gc_check_svalues(struct svalue *s, int num);
bce86c1996-02-25Fredrik Hübinette (Hubbe) void gc_check_short_svalue(union anything *u, TYPE_T type);
b95bef1996-03-29Fredrik Hübinette (Hubbe) void gc_mark_svalues(struct svalue *s, int num); void gc_mark_short_svalue(union anything *u, TYPE_T type);
3a58221996-08-03Fredrik Hübinette (Hubbe) INT32 lpc_sizeof(struct svalue *s);
5267b71995-08-09Fredrik Hübinette (Hubbe) /* Prototypes end here */ #endif