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org.eclipse.core.expressions
Class EvaluationResult

java.lang.Object
  
org.eclipse.core.expressions.EvaluationResult

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public class EvaluationResult
extends 
Object

An evaluation result represents the result of an expression evaluation. There are exact three instances of evaluation result. They are: FALSE, TRUE and NOT_LOADED. NOT_LOADED represents the fact that an expression couldn't be evaluated since a plug-in providing certain test expressions isn't loaded yet.

In addition the class implements the three operation and , or and not. The operation are defined as follows:

The and operation:

AND	FALSE	TRUE	NOT_LOADED
FALSE	FALSE	FALSE	FALSE
TRUE	FALSE	TRUE	NOT_LOADED
NOT_LOADED	FALSE	NOT_LOADED	NOT_LOADED

The or operation:

OR	FALSE	TRUE	NOT_LOADED
FALSE	FALSE	TRUE	NOT_LOADED
TRUE	TRUE	TRUE	TRUE
NOT_LOADED	NOT_LOADED	TRUE	NOT_LOADED

The not operation:

NOT	FALSE	TRUE	NOT_LOADED
	TRUE	FALSE	NOT_LOADED

The class is not intended to be subclassed by clients.

Since:

3.0

Restriction:

This class is not intended to be subclassed by clients.

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Field Summary
static  EvaluationResult	FALSE           The evaluation result representing the value FALSE
static  EvaluationResult	NOT_LOADED           The evaluation result representing the value NOT_LOADED
static  EvaluationResult	TRUE           The evaluation result representing the value TRUE

 

Method Summary
EvaluationResult	and ( EvaluationResult other)           Returns an EvaluationResult whose value is this && other).
EvaluationResult	not ()           Returns the inverted value of this evaluation result
EvaluationResult	or ( EvaluationResult other)           Returns an EvaluationResult whose value is this || other).
String	toString ()           For debugging purpose only
static  EvaluationResult	valueOf (boolean b)           Returns an evaluation result instance representing the given boolean value.
static  EvaluationResult	valueOf ( Boolean b)           Returns a evaluation result instance representing the given Boolean value.

 

Methods inherited from class java.lang. Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

 

Field Detail

FALSE

public static final 
EvaluationResult FALSE

The evaluation result representing the value FALSE

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TRUE

public static final 
EvaluationResult TRUE

The evaluation result representing the value TRUE

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NOT_LOADED

public static final 
EvaluationResult NOT_LOADED

The evaluation result representing the value NOT_LOADED

Method Detail

and

public 
EvaluationResult and(
EvaluationResult other)

Returns an EvaluationResult whose value is this && other).

Parameters:

other - the right hand side of the and operation.

Returns:

this && other as defined by the evaluation result

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or

public 
EvaluationResult or(
EvaluationResult other)

Returns an EvaluationResult whose value is this || other).

Parameters:

other - the right hand side of the or operation.

Returns:

this || other as defined by the evaluation result

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not

public 
EvaluationResult not()

Returns the inverted value of this evaluation result

Returns:

the inverted value of this evaluation result

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valueOf

public static 
EvaluationResult valueOf(boolean b)

Returns an evaluation result instance representing the given boolean value. If the given boolean value is true then ExpressionResult.TRUE is returned. If the value is false then ExpressionResult.FALSE is returned.

Parameters:

b - a boolean value

Returns:

the expression result representing the boolean value

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valueOf

public static 
EvaluationResult valueOf(
Boolean b)

Returns a evaluation result instance representing the given Boolean value. If the given Boolean value is true then ExpressionResult.TRUE is returned. If the value is false then ExpressionResult.FALSE is returned.

Parameters:

b - a Boolean value

Returns:

the expression result representing the Boolean value

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toString

public 
String toString()

For debugging purpose only

Overrides:

toString in class Object

Returns:

a string representing this object. The result is not human readable

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