// pest. The Elegant Parser
// Copyright (c) 2018 Dragoș Tiselice
//
// Licensed under the Apache License, Version 2.0
// <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0> or the MIT
// license <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. All files in the project carrying such notice may not be copied,
// modified, or distributed except according to those terms.

a = { "a" }
b = { "b" }
c = { "c" }
d = { ANY }

choices = _{ a | b | c }
choices_no_progress = { a | b | c }
choices_a_progress = { a ~ a | b | c }
choices_b_progress = { a | b ~ b | c }

level1 = _{ level2 }
level2 = _{ a | b | c }

negative = _{ !d }
negative_match = _{ !a ~ b }
mixed = _{ !d | a }
mixed_progress = _{ (!d | a | b) ~ a }