ConstantPool

LoadConstant

Attributes

Class ConstantPool defines no new attributes.

Fields

instance ConstantPool tag;
        objects: nilObject;
       integers: nilObject;
     operations: nilObject;
     intrinsics: nilObject;
        classes: nilObject;
classOperations: nilObject;
end instance;

Define Class ConstantPool;
    // The ScriptClass's Constant Pool - 
    // The following five lists are accessed
    // by methods of this class using the "ldc*" instructions 
    inherits from Object;

    field objects: ObjectList;
        // pointers to specific instances

    field integers: IntegerList;
        // large numbers - small numbers are encoded in the byte stream

    field operations: OperationNumberList;
    field intrinsics: IntrinsicNumberList;
    field classes: ClassNumberList;
    field classOperations: ClassOperationNumberList;
        // these need to be separate from the other objects
        // on their own special types of list so that
        // the garbage collector can find them

    operation LoadConstant(index: UnsignedShort): Object;
        // used to implement ldc (load constant) instructions in VM.
        // also used by InterpretScript to grab method type information.
end class;