SIMPL Lexical Analysis

The following table gives the token types in the SIMPL language. (Note: a \ indicates that a meta-character is being used as a literal.)

token	! | ? | \| | : | <- | \( | \) | if | while | > | = | \* | / | \+ | - | ‘ | bool | id | num| boolean
id	letter (letter | digit | _)^*
num	digit^+
letter	a | b | c ... | z | A | B | C ... | Z
digit	0 | 1 | 2 ... | 9
boolean	.T | .F