Apr.25.2020 -- CAlive to introduce contextual #defines

[Rick C. Hodgin]

CAlive will introduce contextual #defines.  This will allow simplified names to be used in a contextual { } block attached to the parent thing.

Example:

    #define _YES     1

    #define _NO      0

    // CAlive alternate #define context, similar to "#define myMacro(a,b)"

    define myMacro(a,b)

    {{

        some_function(a, b)

    }} contextual {

        #define _YES 0xff

        #define _NO  0x7f

    }

    function main

    {

        // Uses global scope

        printf("Value of _YES=%d and _NO=%d\n", _YES, _NO);

        // Uses contextual scope

        myMacro(_YES, _NO);

    }

    function some_function

    | params int p1, int p2

    {

        printf("Value of p1=%u and p2=%u\n", p1, p2);

    }

In this code, the output will be:

    Value of _YES=1 and _NO=0

    Value of p1=255 and p2=127

-- 

Rick C. Hodgin