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Groovy example source code file (ASTTransformation.java)

This example Groovy source code file (ASTTransformation.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

asttransformation, asttransformation, sourceunit, sourceunit

The Groovy ASTTransformation.java source code

/*
 * Copyright 2008 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.transform;

import org.codehaus.groovy.ast.ASTNode;
import org.codehaus.groovy.control.SourceUnit;

/**
 * This class is instantiated and invoked when an AST transformation is
 * activated. For Global AST Transformations, this interface is called once per SourceUnit, which is usually a
 * Groovy source file. For Local AST Transformations, this interface is invoked once every time the Local annotation
 * marker is encountered. <br/>
* * You must annotate this class with {@link GroovyASTTransformation} so that Groovy knows which * {@link org.codehaus.groovy.control.CompilePhase} to run in. * * @see GroovyASTTransformation * @author Danno Ferrin (shemnon) */ public interface ASTTransformation { /** * The method is invoked when an AST Transformation is active. For local transformations, it is invoked once * each time the local annotation is encountered. For global transformations, it is invoked once for every source * unit, which is typically a source file. * * @param nodes The ASTnodes when the call was triggered. Element 0 is the AnnotationNode that triggered this * annotation to be activated. Element 1 is the AnnotatedNode decorated, such as a MethodNode or ClassNode. For * global transformations it is usually safe to ignore this parameter. * @param source The source unit being compiled. The source unit may contain several classes. For global transformations, * information about the AST can be retrieved from this object. */ void visit(ASTNode nodes[], SourceUnit source); }

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