IsDef.java

/**
 * MVEL 2.0
 * Copyright (C) 2007 The Codehaus
 * Mike Brock, Dhanji Prasanna, John Graham, Mark Proctor
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.mvel2.ast;

import org.mvel2.ParserContext;
import org.mvel2.integration.VariableResolverFactory;

import static org.mvel2.util.PropertyTools.getFieldOrAccessor;

public class IsDef extends ASTNode {
  public IsDef(char[] expr, int start, int offset, ParserContext pCtx) {
    super(pCtx);
    this.nameCache = new String(this.expr = expr, this.start = start, this.offset = offset);
  }

  public Object getReducedValueAccelerated(Object ctx, Object thisValue, VariableResolverFactory factory) {
    return factory.isResolveable(nameCache) || (thisValue != null && getFieldOrAccessor(thisValue.getClass(), nameCache) != null);
  }

  public Object getReducedValue(Object ctx, Object thisValue, VariableResolverFactory factory) {
    return factory.isResolveable(nameCache) || (thisValue != null && getFieldOrAccessor(thisValue.getClass(), nameCache) != null);

  }

  public Class getEgressType() {
    return Boolean.class;
  }
}