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java.lang.Objectorg.eclipse.core.expressions.Expression
Abstract base class for all expressions provided by the common expression language.
An expression is evaluated by calling evaluate(IEvaluationContext).
This class may be subclassed to provide specific expressions.
| Field Summary | |
|---|---|
protected static String |
ATT_VALUE
Name of the value attribute of an expression (value is value). |
static Expression |
FALSE
The expression corresponding to EvaluationResult.FALSE. |
static Expression |
TRUE
The expression corresponding to EvaluationResult.TRUE. |
| Constructor Summary | |
|---|---|
Expression()
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| Method Summary | |
|---|---|
abstract EvaluationResult |
evaluate(IEvaluationContext context)
Evaluates this expression. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
protected static final String ATT_VALUE
value).
public static final Expression TRUE
EvaluationResult.TRUE.
public static final Expression FALSE
EvaluationResult.FALSE.
| Constructor Detail |
public Expression()
| Method Detail |
public abstract EvaluationResult evaluate(IEvaluationContext context)
throws CoreException
context - an evaluation context providing information like variable,
name spaces, etc. necessary to evaluate this expression
CoreException - if the evaluation failed. The concrete reason is
defined by the subclass implementing this method
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