ast

Class Let

java.lang.Object

ast.Expression

ast.Let

public class Let
extends Expression

A let expression allows for the local definition of a variable as an expression (called here the declaration) and that variable can be used in another expression (called here the body). The scope of the variable is the let expression. For example, the expression let v = 1 in (v + 2) is a let expression with variable v, declaration 1, and body v + 2. This let expression evaluates to 3.

Constructor Summary

Constructors

Constructor and Description
Let(Variable variable, Expression declaration, Expression body) Initializes this let expression with the given variable, declaration, and body.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object object)
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Let

public Let(Variable variable,
           Expression declaration,
           Expression body)

Initializes this let expression with the given variable, declaration, and body.

Parameters:

variable - the variable of this let expression

declaration - the declaration of this let expression

body - the body of this let expression

Precondition:

variable != null, declaration != null, body != null

Method Detail

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object object)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object