1 | /*
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2 | ** mruby/class.h - Class class
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3 | **
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4 | ** See Copyright Notice in mruby.h
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5 | */
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6 |
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7 | #ifndef MRUBY_CLASS_H
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8 | #define MRUBY_CLASS_H
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9 |
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10 | #include "mruby/common.h"
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11 |
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12 | /**
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13 | * Class class
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14 | */
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15 | MRB_BEGIN_DECL
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16 |
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17 | struct RClass {
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18 | MRB_OBJECT_HEADER;
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19 | struct iv_tbl *iv;
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20 | struct kh_mt *mt;
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21 | struct RClass *super;
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22 | };
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23 |
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24 | #define mrb_class_ptr(v) ((struct RClass*)(mrb_ptr(v)))
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25 | #define RCLASS_SUPER(v) (((struct RClass*)(mrb_ptr(v)))->super)
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26 | #define RCLASS_IV_TBL(v) (((struct RClass*)(mrb_ptr(v)))->iv)
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27 | #define RCLASS_M_TBL(v) (((struct RClass*)(mrb_ptr(v)))->mt)
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28 |
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29 | static inline struct RClass*
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30 | mrb_class(mrb_state *mrb, mrb_value v)
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31 | {
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32 | switch (mrb_type(v)) {
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33 | case MRB_TT_FALSE:
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34 | if (mrb_fixnum(v))
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35 | return mrb->false_class;
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36 | return mrb->nil_class;
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37 | case MRB_TT_TRUE:
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38 | return mrb->true_class;
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39 | case MRB_TT_SYMBOL:
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40 | return mrb->symbol_class;
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41 | case MRB_TT_FIXNUM:
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42 | return mrb->fixnum_class;
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43 | case MRB_TT_FLOAT:
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44 | return mrb->float_class;
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45 | case MRB_TT_CPTR:
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46 | return mrb->object_class;
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47 | case MRB_TT_ENV:
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48 | return NULL;
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49 | default:
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50 | return mrb_obj_ptr(v)->c;
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51 | }
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52 | }
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53 |
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54 | // TODO: figure out where to put user flags
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55 | #define MRB_FLAG_IS_PREPENDED (1 << 19)
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56 | #define MRB_FLAG_IS_ORIGIN (1 << 20)
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57 | #define MRB_CLASS_ORIGIN(c) do {\
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58 | if (c->flags & MRB_FLAG_IS_PREPENDED) {\
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59 | c = c->super;\
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60 | while (!(c->flags & MRB_FLAG_IS_ORIGIN)) {\
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61 | c = c->super;\
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62 | }\
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63 | }\
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64 | } while (0)
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65 | #define MRB_INSTANCE_TT_MASK (0xFF)
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66 | #define MRB_SET_INSTANCE_TT(c, tt) c->flags = ((c->flags & ~MRB_INSTANCE_TT_MASK) | (char)tt)
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67 | #define MRB_INSTANCE_TT(c) (enum mrb_vtype)(c->flags & MRB_INSTANCE_TT_MASK)
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68 |
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69 | MRB_API struct RClass* mrb_define_class_id(mrb_state*, mrb_sym, struct RClass*);
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70 | MRB_API struct RClass* mrb_define_module_id(mrb_state*, mrb_sym);
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71 | MRB_API struct RClass *mrb_vm_define_class(mrb_state*, mrb_value, mrb_value, mrb_sym);
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72 | MRB_API struct RClass *mrb_vm_define_module(mrb_state*, mrb_value, mrb_sym);
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73 | MRB_API void mrb_define_method_raw(mrb_state*, struct RClass*, mrb_sym, struct RProc *);
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74 | MRB_API void mrb_define_method_id(mrb_state *mrb, struct RClass *c, mrb_sym mid, mrb_func_t func, mrb_aspec aspec);
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75 | MRB_API void mrb_alias_method(mrb_state *mrb, struct RClass *c, mrb_sym a, mrb_sym b);
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76 |
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77 | MRB_API struct RClass *mrb_class_outer_module(mrb_state*, struct RClass *);
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78 | MRB_API struct RProc *mrb_method_search_vm(mrb_state*, struct RClass**, mrb_sym);
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79 | MRB_API struct RProc *mrb_method_search(mrb_state*, struct RClass*, mrb_sym);
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80 |
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81 | MRB_API struct RClass* mrb_class_real(struct RClass* cl);
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82 |
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83 | void mrb_gc_mark_mt(mrb_state*, struct RClass*);
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84 | size_t mrb_gc_mark_mt_size(mrb_state*, struct RClass*);
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85 | void mrb_gc_free_mt(mrb_state*, struct RClass*);
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86 |
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87 | MRB_END_DECL
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88 |
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89 | #endif /* MRUBY_CLASS_H */
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