freegraph
Class ExpressionItem.Parenthesis

java.lang.Object
  |
  +--freegraph.ExpressionItem
        |
        +--freegraph.ExpressionItem.Parenthesis

Enclosing class:

ExpressionItem

public static class ExpressionItem.Parenthesis

extends ExpressionItem

A Parenthesis is an ExpressionItem used to hold a single parenthesis.

Nested Class Summary

Nested classes inherited from class freegraph.ExpressionItem

ExpressionItem.BiOperator, ExpressionItem.Number, ExpressionItem.Parenthesis, ExpressionItem.UnOperator, ExpressionItem.Variable

Field Summary

static int	LEFT indicats Left parenthesis
static int	RIGHT indicats Right parenthesis

Constructor Summary

ExpressionItem.Parenthesis(int kind)

Method Summary

int	getAction(ExpressionItem exprItem) If this is a LEFT parenthesis, this is moved to the hold stack; If it this is a RIGHT the hold stack is moved to the RPN stack, except if exprItem is a Parenthesis (delete hold stack) or null (error).
int	getKind() returns the kind of parenthesis (LEFT or RIGHT)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

LEFT

public static final int LEFT

indicats Left parenthesis

See Also:

Constant Field Values

RIGHT

public static final int RIGHT

indicats Right parenthesis

See Also:

Constant Field Values

Constructor Detail

ExpressionItem.Parenthesis

public ExpressionItem.Parenthesis(int kind)

Method Detail

getKind

public int getKind()

returns the kind of parenthesis (LEFT or RIGHT)

getAction

public int getAction(ExpressionItem exprItem)

If this is a LEFT parenthesis, this is moved to the hold stack; If it this is a RIGHT the hold stack is moved to the RPN stack, except if exprItem is a Parenthesis (delete hold stack) or null (error).

Specified by:

getAction in class ExpressionItem

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object