07-27-2024, 01:49 PM
By Golly, my over-engineered NumType will tell you if it's an integer! Exactly which types of integer it might be as well! 
Code: (Select All)
CONST limit = 16
DIM test(limit) AS STRING
DATA "123a.3","-123.456","--234","1.23E15","123","dogfood","678.965","54678","-987134","1E15"
DATA "&HFF","&B1001111","&O17","&HFF&&","&B12000222","1.E-12"
FOR i = 1 TO limit
READ test(i)
NEXT
FOR i = 1 TO limit
PRINT "TEST #"; i; ": "; test(i) + " "
result = NumType(test(i))
IF result = 0 THEN PRINT "INVALID: "; NumErr$
IF result AND 1 THEN PRINT "Valid Unsigned Bit. ";
IF result AND 2 THEN PRINT "Valid Unsigned Byte. ";
IF result AND 4 THEN PRINT "Valid Unsigned Integer. ";
IF result AND 8 THEN PRINT "Valid Unsigned Long. ";
IF result AND 16 THEN PRINT "Valid Unsigned Integer64. ";
IF result AND 32 THEN PRINT "Valid Unsigned Bit. ";
IF result AND 64 THEN PRINT "Valid Signed Byte. ";
IF result AND 128 THEN PRINT "Valid Signed Integer. ";
IF result AND 256 THEN PRINT "Valid Signed Long. ";
IF result AND 512 THEN PRINT "Valid Signed Integer64. ";
IF result AND 1024 THEN PRINT "Valid Single. ";
IF result AND 2048 THEN PRINT "Valid Double. ";
IF result AND 4096 THEN PRINT "Valid Float. ";
IF result AND 8192 THEN PRINT "Valid Unsigned Offset. ";
IF result AND 16384 THEN PRINT "Valid Signed Offset. ";
PRINT
PRINT
SLEEP
NEXT
FUNCTION NumType~% (text$)
SHARED NumErr$
DIM TempNum AS INTEGER
temp$ = UCASE$(_TRIM$(text$))
NumErr$ = "": TempNum = 0
'First look for manually assigned types
r1$ = RIGHT$(temp$, 1): r = 1
r2$ = LEFT$(RIGHT$(temp$, 2), 1)
SELECT CASE r1$
CASE "`"
TestFor = 1 'bit
CASE "%"
IF r2$ = "%" THEN
r = 2
TestFor = 2 'byte
ELSE
TestFor = 3 'integer
END IF
CASE "&" 'long, int64, offset
IF r2$ = "&" THEN
r = 2
TestFor = 5 'int64
ELSEIF r2$ = "%" THEN
r = 2
TestFor = 9 'offset
ELSE
TestFor = 4 'long
END IF
CASE "!" 'single
TestFor = 6
CASE "#" 'double, float
IF r2$ = "#" THEN
r = 2
TestFor = 8 'float
ELSE
TestFor = 7 'double
END IF
CASE ELSE 'there's no set type
TestFor = 0
r = 0
END SELECT
temp$ = LEFT$(temp$, LEN(temp$) - r) 'strip off the type symbol
SELECT CASE TestFor
CASE 1 TO 5, 9
r$ = RIGHT$(temp$, 1)
IF r$ = "~" THEN Unsigned = -1: temp$ = LEFT$(temp$, LEN(temp$) - 1)
END SELECT
'check for valid prefixes
l$ = LEFT$(temp$, 2)
SELECT CASE l$
CASE "&H"
temp$ = MID$(temp$, 3)
FOR i = 1 TO LEN(temp$)
t$ = MID$(temp$, i, 1)
SELECT CASE t$
CASE "0" TO "9", "A" TO "F" 'valid
CASE ELSE
NumErr$ = NumErr$ + "Invalid Character (" + t$ + ") encountered. "
END SELECT
NEXT
IF NumErr$ <> "" THEN EXIT FUNCTION
GOTO evaluateintegers
CASE "&B"
temp$ = MID$(temp$, 3)
FOR i = 1 TO LEN(temp$)
t$ = MID$(temp$, i, 1)
SELECT CASE t$
CASE "0", "1" 'only valid bit characters
CASE ELSE
NumErr$ = NumErr$ + "Invalid Character (" + t$ + ") encountered. "
END SELECT
NEXT
IF NumErr$ <> "" THEN EXIT FUNCTION
GOTO evaluateintegers
CASE "&O"
temp$ = MID$(temp$, 3)
FOR i = 1 TO LEN(temp$)
t$ = MID$(temp$, i, 1)
SELECT CASE t$
CASE "0" TO "7" 'only valid oct characters
CASE ELSE
NumErr$ = NumErr$ + "Invalid Character (" + t$ + ") encountered. "
END SELECT
NEXT
IF NumErr$ <> "" THEN EXIT FUNCTION
GOTO evaluateintegers
END SELECT
'Test for easy integers
'First check for positive/negative values; flag for invalid cases of multiple negation.
IF MID$(temp$, 1, 1) = "-" THEN
negative = -1: temp$ = MID$(temp$, 2) 'strip off the initial negative
ELSEIF MID$(temp$, 1, 1) = "+" THEN
temp$ = MID$(temp$, 2) 'strip off the initial positive
END IF
FOR i = 1 TO LEN(temp$)
IF MID$(temp$, i, 1) = "-" THEN minus = minus + 1
IF MID$(temp$, i, 1) = "+" THEN plus = plus + 1
IF MID$(temp$, i, 1) = "." THEN period = period + 1 'Go ahead and check for multiple periods while we're at it.
IF MID$(temp$, i, 1) = "E" OR MID$(temp$, i, 1) = "D" THEN
Exponent = Exponent + 1
IF MID$(temp$, i + 1, 1) = "-" OR MID$(temp$, i + 1, 1) = "+1" THEN ExponentSign = -1
END IF
NEXT
IF period = 0 AND Exponent = 0 THEN 'we should only have integers to process
FOR i = 1 TO LEN(temp$)
t$ = MID$(temp$, i, 1)
IF t$ < "0" OR t$ > "9" THEN NumErr$ = NumErr$ + "Invalid Character (" + t$ + ") encountered. ": EXIT FUNCTION
NEXT
GOTO evaluateintegers
END IF
'At this point forward, we should only have REAL numbers to process
IF Exponent > 1 THEN NumErr$ = NumErr$ + "Multiple E/D exponent characters in string. ": EXIT FUNCTION
IF ExponentSign = 0 THEN
IF minus THEN NumErr$ = NumErr$ + "Multiple negative signs (-) encountered. ": EXIT FUNCTION
IF plus THEN NumErr$ = NumErr$ + "Multiple negative signs (-) encountered. ": EXIT FUNCTION
ELSE
IF minus > 1 THEN NumErr$ = NumErr$ + "Multiple negative signs (-) encountered. ": EXIT FUNCTION
IF plus > 1 THEN NumErr$ = NumErr$ + "Multiple negative signs (-) encountered. ": EXIT FUNCTION
END IF
IF period > 1 THEN NumErr$ = NumErr$ + "Multiple decimal points (.) encountered. ": EXIT FUNCTION
IF Exponent AND period THEN
e = INSTR(temp$, "E")
IF e = 0 THEN e = INSTR(temp$, "D")
p = INSTR(temp$, ".")
IF p > e THEN NumErr$ = NumErr$ + "Decimal points (.) AFTER E/D exponent encountered. ": EXIT FUNCTION
END IF
FOR i = 1 TO LEN(temp$)
t$ = MID$(temp$, i, 1)
SELECT CASE t$
CASE "0" TO "9", "-", "+", ".", "D", "E" 'we should have validated all these characters earlier
CASE ELSE 'so anything else is invalid
NumErr$ = NumErr$ + "Invalid Character (" + t$ + ") encountered. ": EXIT FUNCTION
END SELECT
NEXT
IF NumErr$ <> "" THEN EXIT FUNCTION
'We should've passed all the error checking by this point -- I think...
evaluateintegers:
t## = VAL(text$)
'first compare for all types
IF INT(t##) = t## THEN
IF t## = -1 OR t## = 0 THEN TempNum = TempNum OR 32 'signed bit
IF t## >= -128 AND t## <= 127 THEN TempNum = TempNum OR 64 'signed byte
IF t## >= -32768 AND t## <= 32767 THEN TempNum = TempNum OR 128 'signed integer
IF t## >= -2147483648 AND t## <= 2147483647 THEN TempNum = TempNum OR 256 'signed long
IF t## >= -9223372036854775808 AND t## <= 9223372036854775807 THEN
TempNum = TempNum OR 512 'signed integer64
TempNum = TempNum OR 16384 'signed offset
END IF
IF t## = 1 OR t## = 0 THEN TempNum = TempNum OR 1 'unsigned bit
IF t## >= 0 AND t## <= 255 THEN TempNum = TempNum OR 2 'unsigned byte
IF t## >= 0 AND t## <= 65535 THEN TempNum = TempNum OR 4 'unsigned integer
IF t## >= 0 AND t## <= 4294967295 THEN TempNum = TempNum OR 8 'unsigned long
IF t## >= 0 AND t## <= 18446744073709551615 THEN
TempNum = TempNum OR 16 'unsigned integer64
TempNum = TempNum OR 8192 'unsigned offset
END IF
END IF
IF t## >= -2.802597D45 AND t## <= 3.402823D+38 THEN
TempNum = TempNum OR 1024 'single
END IF
IF t## >= -4.490656458412465E324 AND t## <= 1.797693134862310E+308 THEN TempNum = TempNum OR 2048 'double
IF t## >= -1.18E4932 AND t## <= 1.18E+4932 THEN TempNum = TempNum OR 4096 'float
IF r THEN 'we have specific suffix; only decide if the value is valid for it
TempNum = 0
IF NOT Unsigned THEN 'unsigned
SELECT CASE TestFor
CASE 1
IF t## = -1 OR t## = 0 THEN TempNum = 32 'signed bit
CASE 2
IF t## >= -128 AND t## <= 127 THEN TempNum = 64 'signed byte
CASE 3
IF t## >= -32768 AND t## <= 32767 THEN TempNum = 128 'signed integer
CASE 4
IF t## >= -2147483648 AND t## <= 2147483647 THEN TempNum = 256 'signed long
CASE 5, 9
IF t## >= -9223372036854775808 AND t## <= 9223372036854775807 THEN
IF TestFor = 5 THEN
TempNum = 512 'signed integer64
ELSE
TempNum = 16384 'signed offset
END IF
END IF
CASE 6
IF t## >= -2.802597E-45 AND t## <= 3.402823E+38 THEN TempNum = 1024 'single
CASE 7
IF t## >= -4.490656458412465E-324 AND t## <= 1.797693134862310E+308 THEN TempNum = 2048 'double
CASE 9
IF t## >= -1.18E-4932 AND t## <= 1.18E+4932 THEN TempNum = 4096 'float
END SELECT
ELSE
SELECT CASE TestFor
CASE 1
IF t## = 0 OR t## = 1 THEN TempNum = 1 'unsigned bit
CASE 2
IF t## >= 0 AND t## <= 255 THEN TempNum = 2 'unsigned byte
CASE 3
IF t## >= 0 AND t## <= 65535 THEN TempNum = 4 'unsigned integer
CASE 4
IF t## >= 0 AND t## <= 4294967295 THEN TempNum = 8 'unsigned long
CASE 5, 9
IF t## >= 0 AND t## <= 18446744073709551615 THEN
IF TestFor = 5 THEN
TempNum = 16 'unsigned integer64
ELSE
TempNum = 8192 'unsigned offset
END IF
END IF
END SELECT
END IF
IF TempNum = 0 THEN NumErr$ = "Invalid Suffix. "
END IF
NumType = TempNum
END FUNCTION