#ifndef ITER_H
#define ITER_H

#define FOREACH_ARRAY(arr, start, end, cond, body) \
	do \
	{ \
		for (int i = start; i < end; ++i) \
		{ \
			const noref entity it = arr[i]; \
			if (cond) { body } \
		} \
	} \
	while (0)

#define FOREACH_LIST(list, next, cond, body) \
	do \
	{ \
		int i = 0; \
		for (entity it = list##_first; it; (it = it.next, ++i)) \
		{ \
			if (cond) { body } \
		} \
	} \
	while (0)

#define FOREACH_WORD(words, cond, body) \
	do \
	{ \
		string _words = words; \
		int i = 0; \
		for (string _it; (_it = car(_words)); (_words = cdr(_words), ++i)) \
		{ \
			const noref string it = _it; \
			if (cond) { body } \
		} \
	} \
	while (0)

#if defined(CSQC)
	entity(.entity fld, entity match, .entity tofield) findchainentity_tofield = #403;
#elif defined(SVQC)
	entity(.entity fld, entity match, .entity tofield) findchainentity_tofield = #403;
#elif defined(MENUQC)
	entity(.entity fld, entity match, .entity tofield) findchainentity_tofield = #27;
#endif

.entity _FOREACH_ENTITY_fld;
.entity _FOREACH_ENTITY_next;

#define FOREACH_ENTITY_UNORDERED(cond, body) \
	do { \
		int i = 0; \
		for (entity it = findchainentity_tofield(_FOREACH_ENTITY_fld, NULL, _FOREACH_ENTITY_next); it; (it = it._FOREACH_ENTITY_next, ++i)) \
		{ \
			if (cond) { body } \
		} \
	} \
	while (0)

#define FOREACH_ENTITY_ORDERED(cond, body) \
	do { \
		int i = 0; \
		for (entity it = NULL; (it = nextent(it)); ++i) \
		{ \
			if (cond) { body } \
		} \
	} \
	while (0)

#define FOREACH_ENTITY(cond, body) FOREACH_ENTITY_UNORDERED(cond, body)

#define FOREACH(list, cond, body) FOREACH_LIST(list, enemy, cond, body)

#endif