Q58790: Limits for Nesting Arrays in TYPE Statements in BASIC 7.00

Article: Q58790
Product(s): See article
Version(s): 7.00   | 7.00
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | | mspl13_basic
Last Modified: 28-FEB-1990

In the QBX.EXE (QuickBASIC Extended) environment for MS-DOS, you can
have up to 16 nested-array TYPE definitions (see Code Example 1,
below). If you exceed 16 nestings, you get a "Subscript out of range"
error.

In the QBX.EXE environment, nonarray nested TYPEs (see Code Example 2,
below) can be nested until you run out of memory.

As for the BC.EXE compiler, the limit on the number of TYPE statements
for one module is 240 whether they are nested or nonnested TYPE
definitions. If the number of TYPEs of all kinds exceeds 240, the
BC.EXE compiler gives an error of "Too Many Type statements".

This information applies to Microsoft BASIC Professional Development
System (PDS) Version 7.00 for MS-DOS and MS OS/2.

(This information does not apply to versions of Microsoft BASIC
earlier than 7.00 because they do not support arrays in user-defined
TYPEs.)

Note that only static (nondynamic) arrays can be placed in TYPE
statements in BASIC PDS 7.00.

Code Example 1 (Arrays of Nested TYPEs)
---------------------------------------

OPTION BASE 1

TYPE test1
   a AS STRING * 1
END TYPE

TYPE test2
   b2(1) AS test1        'Nest it as the first TYPE
END TYPE
.
.
.
TYPE test15
   b15(1) AS test14
END TYPE

TYPE test16
   b16(1) AS test15
END TYPE

DIM temp(1000) AS test16

Code Example 2 (Nonarray Variables of Nested TYPEs)
---------------------------------------------------

TYPE test1
   a AS INTEGER
END TYPE

TYPE test2
   b2 AS test1
END TYPE

TYPE test3
   b3 AS test2
END TYPE
.
.
.
TYPE test237
   b237 AS test236
END TYPE

TYPE test238
   b238 AS test237
END TYPE

TYPE new
   none AS INTEGER    'Put in to see if the TYPEs had to be nested
END TYPE

TYPE new2
   none2 AS INTEGER
END TYPE

DIM temp(100) as test238

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