A C E F G I M V

A

ActivationRecord - Class in <Unnamed>

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.

ActivationRecord(String, Object, Environment) - Constructor for class ActivationRecord

Creates an activation record that binds a name to an ordinary value.

ActivationRecord(String, String, Expression, Environment) - Constructor for class ActivationRecord

Creates an activation record that binds a name to a (possibly recursive) function.

Application - Class in <Unnamed>

An Application is an expression that when evaluated applies a function (found by evaluating the operator) to some argument value (found by evaluating the operand).

Application(Expression, Expression) - Constructor for class Application

Create an Application with the specified components.

apply(Object) - Method in class Closure

apply(Object) - Method in interface Function

Apply this function to a specified argument value.

apply(Object) - Method in class IntComparison

apply(Object) - Method in class IntOperation

C

Closure - Class in <Unnamed>

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 +.

Closure(String, Expression, Environment) - Constructor for class Closure

Creates a Closure with the specified components.

compute(int, int) - Method in class IntComparison

This method should be implemented in each concrete subclass.

compute(int, int) - Method in class IntOperation

This method should be implemented in each concrete subclass.

Conditional - Class in <Unnamed>

A Conditional is an if-then-else expression.

Conditional(Expression, Expression, Expression) - Constructor for class Conditional

Creates a Conditional with the specified components.

Constant - Class in <Unnamed>

A Constant is an expression with a directly specified value.

Constant(Object) - Constructor for class Constant

Creates a Constant with the specified value.

E

Environment - Interface in <Unnamed>

An Environment provides the correspondence between names and the values that they are names for.

eval(Environment) - Method in class Application

eval(Environment) - Method in class Conditional

eval(Environment) - Method in class Constant

eval(Environment) - Method in interface Expression

Evaluate this expression.

eval(Environment) - Method in class Variable

Expression - Interface in <Unnamed>

The representation of an expression; in other words, an AST.

F

FactorialTest - Class in <Unnamed>

A class containing a main program for testing out the evaluator.

FactorialTest() - Constructor for class FactorialTest

Function - Interface in <Unnamed>

The run-time representation of a function (that is, a procedure).

G

get(String) - Method in class ActivationRecord

get(String) - Method in interface Environment

Return the value corresponding to the specified name.

get(String) - Method in class InitialEnvironment

I

InitialEnvironment - Class in <Unnamed>

This is the outermost environment, containing predefined names.

InitialEnvironment() - Constructor for class InitialEnvironment

IntComparison - Class in <Unnamed>

An abstract base class for integer comparison functions such as <.

IntComparison() - Constructor for class IntComparison

IntOperation - Class in <Unnamed>

An abstract base class for integer arithmetic functions such as +.

IntOperation() - Constructor for class IntOperation

M

main(String[]) - Static method in class FactorialTest

When this program is run, it does the equivalent of the following ML program:

V

Variable - Class in <Unnamed>

A Variable is a name used as an expression.

Variable(String) - Constructor for class Variable

Creates a Variable with the specified name.

A C E F G I M V