System and method supporting type checking of options
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United States of America Patent
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May 13, 2008
Grant Date -
Jul 25, 2002
app pub date -
Jan 12, 2001
filing date -
Nov 1, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
To support values of properties, a class includes fields to support values in preallocated memory space and with an option data structure which supports, in instances of the class, references to option values without preallocation of memory space. The field and option values are accessed in an instance object of the class using expressions of the same syntactic form. During compilation, the compiler checks the type of an option value against a type description within the option data structure. Different classes may support different forms of data structures such as a linked list or a hash table. During compilation, a method call to an object is encoded without regard to the form of the option data structure. An option value may be set in an option data structure from an initialization expression which includes the name of the option value and, as an argument, the option value.
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