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Class Summary |
| ActivationRecord |
An ActivationRecord is an environment in which one new name is
bound to some value, while all other names retain the values they
have in some pre-existing outer environment, accessed via a nesting
link. |
| Application |
An Application is an expression that when evaluated
applies a function value (found by evaluating the operator)
to some argument value (found by evaluating the operand). |
| BoxedValue |
Holds an Object used as a Value processed by the interpreted program. |
| Closure |
A Closure is a function defined by code being interpreted (either a
function definition or a lambda expression), rather than being one
of the built-in functions such as +. |
| Conditional |
A Conditional is an if-then-else expression. |
| Constant |
A Constant is an expression with a directly specified value. |
| FactorialTest |
|
| FunctionBase |
An abstract class providing the portion of the Function interface
that comes from the Value interface. |
| InitialEnvironment |
This is the outermost environment, containing predefined names. |
| IntComparison |
An abstract base class for integer comparison functions such as
<. |
| IntOperation |
An abstract base class for integer arithmetic functions such as
+. |
| LetFun |
|
| LetVal |
|
| PrimitiveFunction |
A function the name of which is known by the InitialEnvironment. |
| ValueBase |
An abstract class providing much of the code for the Value interface. |
| Variable |
A Variable is a name used as an expression. |