use text;
use strings;

// TODO: docs
export type Leaf = struct {
	buf: []rune,
	length: size,
};

// TODO: docs
fn leaf_close(leaf: *Leaf) void = free(leaf.buf);

// TODO: docs
fn leaf_new() Leaf = Leaf {
	buf = strings::torunes(""),
	length = 0: size,
};

// TODO: docs
fn leaf_fromstr(string: str) Leaf = Leaf {
	buf = strings::torunes(string),
	length = len(string),
};

// TODO: docs
fn leaf_at(leaf: *const Leaf, idx: size) (rune | indexerror) = if (idx > leaf.length) {
	yield indexerror;
} else {
	yield leaf.buf[idx];
};