peg-3-expression.fs

type Expression =
| Terminal of string
| TerminalOneOf of string
| TerminalUnicode of UnicodeCategory
| TerminalWildcard
| NonTerminal of string
| Epsilon
| Sequence of Expression list
| Choice of Expression list
| ZeroOrMore of Expression
| OneOrMore of Expression
| Optional of Expression
| And of Expression
| Not of Expression
| Rule of string * Expression * string