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/ds/map/slice_basic/iter.ha (raw)

// SPDX-License-Identifier: MPL-2.0

use ds::map;

export type iterator = struct {
	vt: map::iterator,
	m: *map,
	i: size,
};

const _itvt: map::vtable_iterator = map::vtable_iterator {
	nexter = &vt_next,
};

fn vt_next(it: *map::iterator) (([]u8, *opaque) | done) = next(it: *iterator);

export fn iter(m: *map) (*map::iterator | nomem) = {
	let it = alloc(iterator {
		vt = &_itvt,
		m = m,
		i = 0,
	})?;
	return (it: *map::iterator);
};

export fn next(it: *iterator) (([]u8, *opaque) | done) = {
	if (it.i >= len(it.m.items)) {
		return done;
	};
	let kv = it.m.items[it.i];
	it.i += 1;
	return (kv.0, kv.1);
};