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

      IHandlerActivation activation) throws CoreException {
    Expression expression = activation.getExpression();
    if (expression == null) {
      return true;
    }
    return expression.evaluate(context) == EvaluationResult.TRUE;
  }


  /**
   * Normally the context returned from getCurrentState() still tracks the
   * application state. This method creates a copy and fills it in with the

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    if (fExpressions == null)
      return EvaluationResult.TRUE;
    EvaluationResult result= EvaluationResult.TRUE;
    for (Iterator iter= fExpressions.iterator(); iter.hasNext();) {
      Expression expression= (Expression)iter.next();
      result= result.and(expression.evaluate(scope));
      // keep iterating even if we have a not loaded found. It can be
      // that we find a false which will result in a better result.
      if (result == EvaluationResult.FALSE)
        return result;
    }

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    if (fExpressions == null)
      return EvaluationResult.TRUE;
    EvaluationResult result= EvaluationResult.FALSE;
    for (Iterator iter= fExpressions.iterator(); iter.hasNext();) {
      Expression expression= (Expression)iter.next();
      result= result.or(expression.evaluate(scope));
      if (result == EvaluationResult.TRUE)
        return result;
    }
    return result;
  }

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    Expressions.checkAttribute(ATT_DEFINITION_ID, fDefinitionId.length() > 0 ? fDefinitionId : null);
  }


  public EvaluationResult evaluate(IEvaluationContext context) throws CoreException {
    Expression expr= getDefinitionRegistry().getExpression(fDefinitionId);
    return expr.evaluate(context);
  }


  public void collectExpressionInfo(ExpressionInfo info) {
    Expression expr;
    try {

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      return EvaluationResult.TRUE;
    }
    EvaluationResult result = EvaluationResult.TRUE;
    for (Iterator iter = fExpressions.iterator(); iter.hasNext();) {
      Expression expression = (Expression) iter.next();
      result = result.and(expression.evaluate(scope));
      // keep iterating even if we have a not loaded found. It can be
      // that we find a false which will result in a better result.
      if (result == EvaluationResult.FALSE) {
        return result;
      }

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      return EvaluationResult.TRUE;
    }
    EvaluationResult result = EvaluationResult.FALSE;
    for (Iterator iter = fExpressions.iterator(); iter.hasNext();) {
      Expression expression = (Expression) iter.next();
      result = result.or(expression.evaluate(scope));
      if (result == EvaluationResult.TRUE) {
        return result;
      }
    }
    return result;

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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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    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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    public boolean isEnabledFor(IConsole console) throws CoreException {
        EvaluationContext context = new EvaluationContext(null, console);
        Expression expression = getEnablementExpression();
        if (expression != null){
          EvaluationResult evaluationResult = expression.evaluate(context);
            return evaluationResult == EvaluationResult.TRUE;  
        }
        return true;
    }

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            Expression enablementExpression = getEnablementExpression();
            if (enablementExpression == null) {
                return true;
            } 
            EvaluationContext context = new EvaluationContext(null, this);
            EvaluationResult evaluationResult = enablementExpression.evaluate(context);
            return evaluationResult != EvaluationResult.FALSE;
        } catch (CoreException e) {
            ConsolePlugin.log(e);
            return false;
        }

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