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Groovy: A powerful, dynamic language for the JVM
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/*
 * Copyright 2003-2007 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 java.lang.reflect.Field;

import org.codehaus.groovy.ast.expr.Expression;
import org.objectweb.asm.Opcodes;

/**
 * Represents a field (member variable)
 * 
 * @author James Strachan
 * @version $Revision: 6778 $
 */
public class FieldNode extends AnnotatedNode implements Opcodes, Variable {

    private String name;
    private int modifiers;
    private ClassNode type;
    private ClassNode owner;
    private Expression initialValueExpression;
    private boolean dynamicTyped;
    private boolean holder;
    private boolean closureShare = false;

    public static FieldNode newStatic(Class theClass, String name) throws SecurityException, NoSuchFieldException {
        Field field = theClass.getField(name);
        ClassNode fldType = ClassHelper.make(field.getType());
        return new FieldNode(name, ACC_PUBLIC | ACC_STATIC, fldType, ClassHelper.make(theClass), null);
    }

    public FieldNode(String name, int modifiers, ClassNode type, ClassNode owner, Expression initialValueExpression) {
        this.name = name;
        this.modifiers = modifiers;
        this.type = type;
        if (this.type==ClassHelper.DYNAMIC_TYPE && initialValueExpression!=null) this.setType(initialValueExpression.getType());
        this.setType(type);
        this.owner = owner;
        this.initialValueExpression = initialValueExpression;
    }

    public Expression getInitialExpression() {
        return initialValueExpression;
    }

    public int getModifiers() {
        return modifiers;
    }

    public String getName() {
        return name;
    }

    public ClassNode getType() {
        return type;
    }

    public void setType(ClassNode type) {
        this.type = type;
        dynamicTyped |= type==ClassHelper.DYNAMIC_TYPE;
    }
    
    public ClassNode getOwner() {
        return owner;
    }

    public boolean isHolder() {
        return holder;
    }

    public void setHolder(boolean holder) {
        this.holder = holder;
    }

    public boolean isDynamicTyped() {
        return dynamicTyped;
    }

    public void setModifiers(int modifiers) {
        this.modifiers = modifiers;
    }

    /**
     * @return true if the field is static
     */
    public boolean isStatic() {
        return (modifiers & ACC_STATIC) != 0;
    }
	/**
	 * @param owner The owner to set.
	 */
	public void setOwner(ClassNode owner) {
		this.owner = owner;
	}

    public boolean hasInitialExpression() {
        return initialValueExpression!=null;
    }

    public boolean isInStaticContext() {
        return isStatic();
    }
    public Expression getInitialValueExpression() {
        return initialValueExpression;
    }
    public void setInitialValueExpression(Expression initialValueExpression) {
        this.initialValueExpression = initialValueExpression;
    }

    public boolean isClosureSharedVariable() {
        return false;
    }
    
    public void setClosureSharedVariable(boolean inClosure) {
        closureShare = inClosure;        
    }
}