Package jadex.javaparser.javaccimpl

Class CompareNode

java.lang.Object

jadex.javaparser.javaccimpl.SimpleNode

jadex.javaparser.javaccimpl.ExpressionNode

jadex.javaparser.javaccimpl.CompareNode

All Implemented Interfaces:

IParsedExpression, Node, java.io.Serializable

public class CompareNode
extends ExpressionNode

Compare node compares it's (two) child nodes. Also supports instanceof operator (second child has to evaluate to class object).

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static int	EQUAL	The equal (==) operator.
static int	GREATER	The greater-than (>) operator.
static int	GREATEREQUAL	The greater-equal (>=) operator.
static int	INSTANCEOF	The instanceof operator.
static int	LESS	The less-than (<) operator.
static int	LESSEQUAL	The less-equal (<=) operator.
protected int	op	The operation.
static int	UNEQUAL	The unequal (!=) operator.

Fields inherited from class jadex.javaparser.javaccimpl.ExpressionNode

constant, constant_value, expressiontext, imports, static_type, text

Fields inherited from class jadex.javaparser.javaccimpl.SimpleNode

children, id, parent

Constructor Summary

Constructors

Constructor	Description
CompareNode(jadex.javaparser.javaccimpl.ParserImpl p, int id)	Create a node.

Method Summary

Modifier and Type	Method	Description
protected int	compare(java.lang.Object val1, java.lang.Object val2)	Compare two values.
boolean	equals(java.lang.Object o)	Test if two nodes are equal.
static int	fromString(java.lang.String operator)	Convert an operator from a string representation.
java.lang.Object	getValue(IValueFetcher fetcher)	Evaluate the expression in the given state with respect to given parameters.
int	hashCode()	Get the hash code for the node.
void	precompile()	Check argument number, and precompute expression when all children are constant.
void	setText(java.lang.String text)	Set the token text.
java.lang.String	toPlainString()	Create a string representation of this node and its subnodes.
static java.lang.String	toString(int operator)	Convert an operator to a string representation.

Methods inherited from class jadex.javaparser.javaccimpl.ExpressionNode

appendText, getConstantValue, getExpressionText, getParameters, getStaticType, getText, getUnboundParameterNodes, isConstant, precompileTree, setConstant, setConstantValue, setExpressionText, setStaticType, subnodeToString, throwEvaluationException, throwParseException, toString, toString

Methods inherited from class jadex.javaparser.javaccimpl.SimpleNode

dump, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent

Methods inherited from class java.lang.Object

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

Field Detail

EQUAL

public static final int EQUAL

The equal (==) operator.

See Also:

Constant Field Values

UNEQUAL

public static final int UNEQUAL

The unequal (!=) operator.

See Also:

Constant Field Values

GREATER

public static final int GREATER

The greater-than (>) operator.

See Also:

Constant Field Values

LESS

public static final int LESS

The less-than (<) operator.

See Also:

Constant Field Values

GREATEREQUAL

public static final int GREATEREQUAL

The greater-equal (>=) operator.

See Also:

Constant Field Values

LESSEQUAL

public static final int LESSEQUAL

The less-equal (<=) operator.

See Also:

Constant Field Values

INSTANCEOF

public static final int INSTANCEOF

The instanceof operator.

See Also:

Constant Field Values

op

protected int op

The operation.

Constructor Detail

CompareNode

public CompareNode(jadex.javaparser.javaccimpl.ParserImpl p,
                   int id)

Create a node.

Parameters:

p - The parser.

id - The id.

Method Detail

setText

public void setText(java.lang.String text)

Set the token text.

Overrides:

setText in class ExpressionNode

Parameters:

text - The token text.

precompile

public void precompile()

Check argument number, and precompute expression when all children are constant.

Overrides:

precompile in class ExpressionNode

getValue

public java.lang.Object getValue(IValueFetcher fetcher)

Evaluate the expression in the given state with respect to given parameters.

Specified by:

getValue in interface IParsedExpression

Specified by:

getValue in class ExpressionNode

Parameters:

params - The parameters (string, value pairs), if any.

Returns:

The value of the term.

toPlainString

public java.lang.String toPlainString()

Create a string representation of this node and its subnodes.

Specified by:

toPlainString in interface Node

Overrides:

toPlainString in class ExpressionNode

Returns:

A string representation of this node.

compare

protected int compare(java.lang.Object val1,
                      java.lang.Object val2)

Compare two values.

Parameters:

val1 - The first value.

val2 - The second value.

Returns:

A negative integer, zero, or a positive integer as the first value is less than, equal to, or greater than the second value.

Throws:

java.lang.ClassCastException - when the values are not comparable.

toString

public static java.lang.String toString(int operator)

Convert an operator to a string representation.

Parameters:

operator - The operator

Returns:

A string representation of the operator.

fromString

public static int fromString(java.lang.String operator)

Convert an operator from a string representation.

Parameters:

operator - The operator as string.

Returns:

The int value of the operator.

equals

public boolean equals(java.lang.Object o)

Test if two nodes are equal.

Overrides:

equals in class ExpressionNode

hashCode

public int hashCode()

Get the hash code for the node.

Overrides:

hashCode in class ExpressionNode