Generator Operators

See here for more information about Generator Operators.

Expression	Attribute	Description
`!a`	`A`	Not predicate. Ensure that `a` does not succeed generating, but don't create any output
`&a`	`A`	And predicate. Ensure that `a` does succeed generating, but don't create any output
`-a`	`optional<A>`	Optional. Generate `a` zero or one time
`*a`	`vector<A>`	Kleene. Generate `a` zero or more times
`+a`	`vector<A>`	Plus. Generate `a` one or more times
`a \| b`	`variant<A, B>`	Alternative. Generate `a` or `b`
`a << b`	`tuple<A, B>`	Sequence. Generate `a` followed by `b`
`a % b`	`vector<A>`	List. Generate `a` delimited `b` one or more times

For more information about the attribute propagation rules implemented by the compound generators please see Generator Compound Attribute Rules.

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