Squirrel language (http://squirrel-lang.org)

This repository uses Squirrel 3.0.7 stable as a base, but may evolve and depart from its original implementation.

• Fixed a bunch of clang compiler and static analyzer warnings.

• Added a default delegate for null values (currently empty, but can be customized from code)
• Added the following API to SQVM class:
• SQObjectPtr GetDefaultDelegateObject(const SQObjectType type) const;, which returns the default delegate SQObjectPtr for a given SQObjectType
• SQTable *GetDefaultDelegate(const SQObjectPtr &self), which allows getting the default delegate SQTable for a given object without actually invoking anything on it (it seemed that existing APIs did not provide such functionality). Internally calls GetDefaultDelegateObject, so behavior is consistent between these methods
• sq_getdefaultdelegate function now also relies on GetDefaultDelegateObject in its implementation.

• Changed logic of object to string conversion: now the _tostring() metamethod of the default delegate is invoked if present, so customizing the default string representations of all object types is possible. If a table already has a delegate with a _tostring() metamethod present, it is invoked instead of the default delegate's implementation.
• Calling an object will try to use _call metamethod on its default delegate if usuall call mechanics are not available (this allows making nulls callable for example to mimic the Objective-C nil behavior which allows sending any messages to it and receiving nil back)