Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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; import org.objectweb.asm.Opcodes; import java.lang.reflect.Field; /** * Represents a field (member variable) */ 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 ClassNode originType; 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.setType(type); this.owner = owner; this.initialValueExpression = initialValueExpression; } @Override public Expression getInitialExpression() { return initialValueExpression; } @Override public int getModifiers() { return modifiers; } @Override public String getName() { return name; } @Override public ClassNode getType() { return type; } public void setType(ClassNode type) { this.type = type; this.originType = type; dynamicTyped |= type == ClassHelper.DYNAMIC_TYPE; } public ClassNode getOwner() { return owner; } public boolean isHolder() { return holder; } public void setHolder(boolean holder) { this.holder = holder; } @Override 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; } /** * @return true if the field is an enum */ public boolean isEnum() { return (modifiers & ACC_ENUM) != 0; } /** * @return true if the field is final */ public boolean isFinal() { return (modifiers & ACC_FINAL) != 0; } /** * @return true if the field is volatile */ public boolean isVolatile() { return (modifiers & ACC_VOLATILE) != 0; } /** * @return true if the field is public */ public boolean isPublic() { return (modifiers & ACC_PUBLIC) != 0; } /** * @return true if the field is protected */ public boolean isProtected() { return (modifiers & ACC_PROTECTED) != 0; } /** * @return true if the field is private * @since 2.5.0 */ public boolean isPrivate() { return (modifiers & ACC_PRIVATE) != 0; } /** * @param owner The owner to set. */ public void setOwner(ClassNode owner) { this.owner = owner; } @Override public boolean hasInitialExpression() { return initialValueExpression != null; } @Override public boolean isInStaticContext() { return isStatic(); } public Expression getInitialValueExpression() { return initialValueExpression; } public void setInitialValueExpression(Expression initialValueExpression) { this.initialValueExpression = initialValueExpression; } /** * @deprecated */ @Deprecated @Override public boolean isClosureSharedVariable() { return false; } /** * @deprecated */ @Deprecated @Override public void setClosureSharedVariable(boolean inClosure) { } @Override public ClassNode getOriginType() { return originType; } public void setOriginType(ClassNode cn) { originType = cn; } public void rename(String name) { getDeclaringClass().renameField(this.name, name); this.name = name; } }