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#ifndef RBIMPL_INTERN_ENUMERATOR_H /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_INTERN_ENUMERATOR_H
/**
* @file
* @author Ruby developers <ruby-core@ruby-lang.org>
* @copyright This file is a part of the programming language Ruby.
* Permission is hereby granted, to either redistribute and/or
* modify this file, provided that the conditions mentioned in the
* file COPYING are met. Consult the file for details.
* @warning Symbols prefixed with either `RBIMPL` or `rbimpl` are
* implementation details. Don't take them as canon. They could
* rapidly appear then vanish. The name (path) of this header file
* is also an implementation detail. Do not expect it to persist
* at the place it is now. Developers are free to move it anywhere
* anytime at will.
* @note To ruby-core: remember that this header can be possibly
* recursively included from extension libraries written in C++.
* Do not expect for instance `__VA_ARGS__` is always available.
* We assume C99 for ruby itself but we don't assume languages of
* extension libraries. They could be written in C++98.
* @brief Public APIs related to ::rb_cEnumerator.
*/
#include "ruby/internal/dllexport.h"
#include "ruby/internal/intern/eval.h" /* rb_frame_this_func */
#include "ruby/internal/iterator.h" /* rb_block_given_p */
#include "ruby/internal/symbol.h"
#include "ruby/internal/value.h"
RBIMPL_SYMBOL_EXPORT_BEGIN()
typedef VALUE rb_enumerator_size_func(VALUE, VALUE, VALUE);
typedef struct {
VALUE begin;
VALUE end;
VALUE step;
int exclude_end;
} rb_arithmetic_sequence_components_t;
/* enumerator.c */
VALUE rb_enumeratorize(VALUE, VALUE, int, const VALUE *);
VALUE rb_enumeratorize_with_size(VALUE, VALUE, int, const VALUE *, rb_enumerator_size_func *);
VALUE rb_enumeratorize_with_size_kw(VALUE, VALUE, int, const VALUE *, rb_enumerator_size_func *, int);
int rb_arithmetic_sequence_extract(VALUE, rb_arithmetic_sequence_components_t *);
VALUE rb_arithmetic_sequence_beg_len_step(VALUE, long *begp, long *lenp, long *stepp, long len, int err);
RBIMPL_SYMBOL_EXPORT_END()
#ifndef RUBY_EXPORT
# define rb_enumeratorize_with_size(obj, id, argc, argv, size_fn) \
rb_enumeratorize_with_size(obj, id, argc, argv, (rb_enumerator_size_func *)(size_fn))
# define rb_enumeratorize_with_size_kw(obj, id, argc, argv, size_fn, kw_splat) \
rb_enumeratorize_with_size_kw(obj, id, argc, argv, (rb_enumerator_size_func *)(size_fn), kw_splat)
#endif
#define SIZED_ENUMERATOR(obj, argc, argv, size_fn) \
rb_enumeratorize_with_size((obj), ID2SYM(rb_frame_this_func()), \
(argc), (argv), (size_fn))
#define SIZED_ENUMERATOR_KW(obj, argc, argv, size_fn, kw_splat) \
rb_enumeratorize_with_size_kw((obj), ID2SYM(rb_frame_this_func()), \
(argc), (argv), (size_fn), (kw_splat))
#define RETURN_SIZED_ENUMERATOR(obj, argc, argv, size_fn) do { \
if (!rb_block_given_p()) \
return SIZED_ENUMERATOR(obj, argc, argv, size_fn); \
} while (0)
#define RETURN_SIZED_ENUMERATOR_KW(obj, argc, argv, size_fn, kw_splat) do { \
if (!rb_block_given_p()) \
return SIZED_ENUMERATOR_KW(obj, argc, argv, size_fn, kw_splat); \
} while (0)
#define RETURN_ENUMERATOR(obj, argc, argv) \
RETURN_SIZED_ENUMERATOR(obj, argc, argv, 0)
#define RETURN_ENUMERATOR_KW(obj, argc, argv, kw_splat) \
RETURN_SIZED_ENUMERATOR_KW(obj, argc, argv, 0, kw_splat)
#endif /* RBIMPL_INTERN_ENUMERATOR_H */
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