66 lines
2.4 KiB
C
66 lines
2.4 KiB
C
// C reflection: enums, functions, structs, members and anotations.
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// - rlyeh, public domain
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//
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// @todo: nested structs? pointers in members?
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// @todo: declare TYPEDEF(vec3, float[3]), TYPEDEF(mat4, vec4[4]/*float[16]*/)
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#ifndef OBJTYPE
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#define OBJTYPE(T) 0
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#endif
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typedef struct reflect_t {
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unsigned id, objtype;
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union {
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unsigned sz;
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unsigned member_offset;
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unsigned enum_value;
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};
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const char *name;
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const char *info;
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void *addr;
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unsigned parent;
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const char *type;
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unsigned bytes;
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} reflect_t;
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// inscribe api
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#define ENUM(V, .../*value_annotations*/) \
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enum_inscribe(#V,V, "" __VA_ARGS__/*value_annotations*/)
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#define FUNCTION(F, .../*function_annotations*/) \
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function_inscribe(#F,(void*)F, "" __VA_ARGS__/*function_annotations*/)
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#define STRUCT(T, type, member, .../*member_annotations*/) \
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struct_inscribe(#T,sizeof(T),OBJTYPE(T),NULL), \
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type_inscribe(#type,sizeof(((T){0}).member),"" __VA_ARGS__/*member_annotations*/), \
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member_inscribe(#T, #member,(uintptr_t)&((T*)0)->member, "" __VA_ARGS__/*member_annotations*/, #type, sizeof(((T){0}).member) )
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// find api
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API unsigned enum_find(const char *E);
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API void * function_find(const char *F);
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API reflect_t member_find(const char *T, const char *M); /// find specific member
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API void * member_findptr(void *obj, const char *T, const char *M); // @deprecate
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API array(reflect_t) members_find(const char *T);
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// iterate members in a struct
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#define each_member(T,R) \
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(array(reflect_t)*found_ = map_find(members, intern(T)); found_; found_ = 0) \
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for(int it_ = 0, end_ = array_count(*found_); it_ != end_; ++it_ ) \
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for(reflect_t *R = (*found_)+it_; R; R = 0 )
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// private api, still exposed
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API void type_inscribe(const char *TY,unsigned TYsz,const char *infos);
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API void enum_inscribe(const char *E,unsigned Eval,const char *infos);
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API void struct_inscribe(const char *T,unsigned Tsz,unsigned OBJTYPEid, const char *infos);
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API void member_inscribe(const char *T, const char *M,unsigned Msz, const char *infos, const char *type, unsigned bytes);
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API void function_inscribe(const char *F,void *func,const char *infos);
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API void reflect_print(const char *symbol);
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API void reflect_dump(const char *mask);
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API void reflect_init();
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