Create a new Lexer */.

&, ., ^.

When no token available.

<->.

Alphabet of tokens.

->.

(.

!.

1, 0.

|, v.

).

variable.

+.

And Expression API.

Equivalence expression API.

Implies Expression API.

Defines the Lexer struct.

Not Expression API.

Number expression API.

Or Expression API.

Parser struct used to parse a boolean expression.

Struct that will execute the main program */.

Defines the Token struct.

Var Expression API.

XOR Expression API.