avrora.syntax
Class Expr.Constant

java.lang.Object
  avrora.syntax.ASTNode
      avrora.syntax.Expr
          avrora.syntax.Expr.Term
              avrora.syntax.Expr.Constant

Enclosing class:

Expr

public static class Expr.Constant

extends Expr.Term

The Constant class represents a integer literal (a constant) within the program.

Nested Class Summary

Nested classes inherited from class avrora.syntax.Expr

Expr.BinOp, Expr.CharLiteral, Expr.Constant, Expr.Func, Expr.RelativeAddress, Expr.StringLiteral, Expr.Term, Expr.UnOp, Expr.Variable

Field Summary

int

value

Fields inherited from class avrora.syntax.Expr.Term

token

Constructor Summary

Expr.Constant(AbstractToken tok)

Method Summary

int	evaluate(int currentByteAddress, Context c) The evaluate() method computes the value of the expression in this context and returns its value.

Methods inherited from class avrora.syntax.Expr.Term

getLeftMostToken, getRightMostToken, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

value

public final int value

Constructor Detail

Expr.Constant

public Expr.Constant(AbstractToken tok)

Method Detail

evaluate

public int evaluate(int currentByteAddress,
                    Context c)

The evaluate() method computes the value of the expression in this context and returns its value. Since this is a constant, it simply returns its value.

Specified by:

evaluate in class Expr

Parameters:

currentByteAddress - the current byte address within the program

c - the context in which to evaluate this expression

Returns:

the value of the expression as a 32-bit integer