585 B
585 B
Regular Expressions for PLATYPUS
Comments
L(COMMENT) = !< [^CR]*CR
Keywords
L(KEYWORD) = PLATYPUS | IF | THEN | ELSE | USING | REPEAT | INPUT | OUTPUT
Variable Identifiers
L(L) = [a-zA-Z]
L(LoD) = [a-zA-Z0-9]
L(VID) = AVID | SVID
L(AVID) = [a-zA-Z]([a-zA-Z0-9])*
L(SVID) = AVID#
Integer Literals
L(DIL) = 0|([1-9][0-9]*)
L(NzD) = [1-9]
L(D) = [0-9]
L(OD) = [0-7]
L(OIL) = 0(0|[1-7][0-7]*)
L(IL) = (DIL | OIL)
Floating Point Literal
L(FLPL) = (0 | [1-9]*).[0-9]*
String Literal
L(STRL) = "([a-ZA-Z_0-9])*"