Q50698: CodeView 2.20 Does Not Allow Routine.Variable Specification

Article: Q50698
Product(s): See article
Version(s): 2.20   | 2.20
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | S_PASCAL S_C H_FORTRAN H_MASM DOCERR | mspl13_basic
Last Modified: 10-NOV-1989

On Pages 91-92 of the "CodeView and Utilities" manual that accompanied
C 5.10 and Pascal 4.00 for CodeView Version 2.20, the period is
documented as being useful as a specifier of local variables in parent
functions. The syntax is stated to be as follows:

   routine_name.variable_name

However, this feature was not implemented in Version 2.20 of CodeView.
It was implemented in CodeView Version 2.30 (which accompanied FORTRAN
5.00).

This feature is useful in all languages, but particularly helpful in
Pascal because of the "nested-scoping" (the ability of a function to
access variables from the routine that called it) that occurs in
Pascal.

To use this feature in CodeView 2.30, you must be in either the
routine where the variable is defined or in a routine that is a child
(or grandchild, etc.) of that routine. After entering the proper
routine, any variable name can be referenced with a routine and
variable name (see example below).

program first (input, output) ;
var a: integer ;            { Available throughout the program }

    procedure second ;
    var b: integer ;        { Available in second and third }

        procedure third ;
        var c: integer ;    { Available in third }

        begin
            a := 3 ;
            b := 3 ;
            c := 3 ;
        end ;

    begin
        a := 2 ;
        b := 2 ;
        third ;
    end ;

begin
    a := 1 ;                { Cannot watch second/third variables }
    second ;
end.

When in procedure third, you can place a watch on the variables in
procedure second in the following manner:

w? second.b

This will display the variable in procedure second. This variable
cannot be displayed from the main program, however.

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 1986-2002.