Examples of org.eclipse.core.expressions.Expression.evaluate()

Class org.eclipse.core.expressions.Expression

Examples of org.eclipse.core.expressions.Expression.evaluate()

org.eclipse.core.expressions.Expression.evaluate()
Evaluates this expression. @param context an evaluation context providing information like variable,name spaces, etc. necessary to evaluate this expression @return the result of the expression evaluation @throws CoreException if the evaluation failed. The concrete reason is defined by the subclass implementing this method

  }


  private boolean isEnabledByEnablementElement(Element enablement, IEvaluationContext context) {
    try {
      Expression expression = ExpressionConverter.getDefault().perform(enablement);
      return expression.evaluate(context) == EvaluationResult.TRUE;
    }
    catch (CoreException e) {
      /*
       * This can happen when attempting to resolve a UI variable (e.g. "workbench")
       * in a non-UI environment (infocenter mode). Fail silently.

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    if (expr == null) {
      expr = createEnablementExpression(delegateShortcutID);
      expressions.put(delegateShortcutID, expr);
    }
    try {
      return expr.evaluate(createContext(receiver)) != EvaluationResult.FALSE;
    } catch (CoreException ce) {
      EclEmmaUIPlugin.log(ce);
      return false;
    }
  }

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