[alicebot-archcomm] Predefine predicates/properties

[Ernest Lergon]

Proposal:

    The AIML interpreter must raise a fatal error at load-time, if a
    predicate/property is not predefined.
    The content of the attribute 'name' is case-sensitive.

E.g.:
To access a property like
    <bot name="name"/>
it must be predefined in the startup-files as
    <property name="name" value="Alice"/>

To access a predicate like
    <get name="likes"/>
    <set name="likes">Lizards</set>
it must be predefined in the startup-files as
    <predicate name="likes" default="nothing" set-return="value"/>
where the attributes 'default' and 'set-return' are optional.

Many bugs come from variables, which where never defined or written w/o
respect to case, thus being undefined.

Have a look at the pattern "BOT PROPERTIES" in aiml/alice/B.aiml, where
many of the properties listed are never mentioned in startup.xml. BTW:
properties like 'memory', 'spt' (Server Provcessing Time),
'hourlyqueries' or 'totalclients' are dynamic and can't be predefined -
but this is another story...

So to avoid endless searching through tons of categories it might be
better to use a strict pre-defining.

As you might have noticed this implies, that the AIML specs should
define a standard <startup> format ;-)

Ernest

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