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variable.h
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108 lines (95 loc) · 3.27 KB
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/**
** @file mruby/variable.h - mruby variables
**
** See Copyright Notice in mruby.h
*/
#ifndef MRUBY_VARIABLE_H
#define MRUBY_VARIABLE_H
#if defined(__GNUC__) || defined(__clang__)
#define MRB_MEM_PREFETCH(addr) __builtin_prefetch(addr, 0, 1)
#else
#define MRB_MEM_PREFETCH(addr)
#endif
#include "common.h"
/**
* Functions to access mruby variables.
*/
MRB_BEGIN_DECL
MRB_API mrb_value mrb_const_get(mrb_state*, mrb_value, mrb_sym);
MRB_API void mrb_const_set(mrb_state*, mrb_value, mrb_sym, mrb_value);
MRB_API mrb_bool mrb_const_defined(mrb_state*, mrb_value, mrb_sym);
MRB_API void mrb_const_remove(mrb_state*, mrb_value, mrb_sym);
MRB_API mrb_bool mrb_iv_name_sym_p(mrb_state *mrb, mrb_sym sym);
MRB_API void mrb_iv_name_sym_check(mrb_state *mrb, mrb_sym sym);
MRB_API mrb_value mrb_obj_iv_get(mrb_state *mrb, struct RObject *obj, mrb_sym sym);
MRB_API void mrb_obj_iv_set(mrb_state *mrb, struct RObject *obj, mrb_sym sym, mrb_value v);
MRB_API mrb_bool mrb_obj_iv_defined(mrb_state *mrb, struct RObject *obj, mrb_sym sym);
MRB_API mrb_value mrb_iv_get(mrb_state *mrb, mrb_value obj, mrb_sym sym);
MRB_API void mrb_iv_set(mrb_state *mrb, mrb_value obj, mrb_sym sym, mrb_value v);
MRB_API mrb_bool mrb_iv_defined(mrb_state*, mrb_value, mrb_sym);
MRB_API mrb_value mrb_iv_remove(mrb_state *mrb, mrb_value obj, mrb_sym sym);
MRB_API void mrb_iv_copy(mrb_state *mrb, mrb_value dst, mrb_value src);
MRB_API mrb_bool mrb_const_defined_at(mrb_state *mrb, mrb_value mod, mrb_sym id);
/**
* Get a global variable. Will return nil if the var does not exist
*
* Example:
*
* !!!ruby
* # Ruby style
* var = $value
*
* !!!c
* // C style
* mrb_sym sym = mrb_intern_lit(mrb, "$value");
* mrb_value var = mrb_gv_get(mrb, sym);
*
* @param mrb The mruby state reference
* @param sym The name of the global variable
* @return The value of that global variable. May be nil
*/
MRB_API mrb_value mrb_gv_get(mrb_state *mrb, mrb_sym sym);
/**
* Set a global variable
*
* Example:
*
* !!!ruby
* # Ruby style
* $value = "foo"
*
* !!!c
* // C style
* mrb_sym sym = mrb_intern_lit(mrb, "$value");
* mrb_gv_set(mrb, sym, mrb_str_new_lit("foo"));
*
* @param mrb The mruby state reference
* @param sym The name of the global variable
* @param val The value of the global variable
*/
MRB_API void mrb_gv_set(mrb_state *mrb, mrb_sym sym, mrb_value val);
/**
* Remove a global variable.
*
* Example:
*
* # Ruby style
* $value = nil
*
* // C style
* mrb_sym sym = mrb_intern_lit(mrb, "$value");
* mrb_gv_remove(mrb, sym);
*
* @param mrb The mruby state reference
* @param sym The name of the global variable
*/
MRB_API void mrb_gv_remove(mrb_state *mrb, mrb_sym sym);
MRB_API mrb_value mrb_cv_get(mrb_state *mrb, mrb_value mod, mrb_sym sym);
MRB_API void mrb_mod_cv_set(mrb_state *mrb, struct RClass * c, mrb_sym sym, mrb_value v);
MRB_API void mrb_cv_set(mrb_state *mrb, mrb_value mod, mrb_sym sym, mrb_value v);
MRB_API mrb_bool mrb_cv_defined(mrb_state *mrb, mrb_value mod, mrb_sym sym);
/* return non zero to break the loop */
typedef int (mrb_iv_foreach_func)(mrb_state*,mrb_sym,mrb_value,void*);
MRB_API void mrb_iv_foreach(mrb_state *mrb, mrb_value obj, mrb_iv_foreach_func *func, void *p);
MRB_END_DECL
#endif /* MRUBY_VARIABLE_H */