avrora.syntax
Class Expr.Constant

java.lang.Object
  extended byavrora.syntax.ASTNode
      extended byavrora.syntax.Expr
          extended byavrora.syntax.Expr.Term
              extended byavrora.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