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/*
 * Copyright 2003-2010 the original author or authors.
 *
 * 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.codehaus.groovy.ast;

import org.codehaus.groovy.ast.expr.Expression;

/**
 * interface to mark a AstNode as Variable. Typically these are 
 * VariableExpression, FieldNode, PropertyNode and Parameter
 * 
 * @author Jochen Theodorou
 */
public interface Variable {
    
    /**
     * the type of the variable
     */
    ClassNode getType();
    
    /**
     * the type before wrapping primitives type of the variable
     */
    ClassNode getOriginType();
    
    /**
     * the name of the variable
     */
    String getName();
    
    /**
     * expression used to initialize the variable or null of there
     * is no initialization.
     */
    Expression getInitialExpression();
    
    /**
     * returns true if there is an initialization expression
     */
    boolean hasInitialExpression();
    
    /**
     * returns true if this variable is used in a static context.
     * A static context is any static initializer block, when this variable
     * is declared as static or when this variable is used in a static method 
     */
    boolean isInStaticContext();

    boolean isDynamicTyped();
    boolean isClosureSharedVariable();
    void setClosureSharedVariable(boolean inClosure);

    int getModifiers();
}