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Groovy example source code file (ImportNode.java)

This example Groovy source code file (ImportNode.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

annotatednode, classnode, classnode, importnode, importnode, opcodes, opcodes, string, string

The Groovy ImportNode.java source code

/*
 * 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.objectweb.asm.Opcodes;

/**
 * Represents an import statement of a single class
 * <p/>
 * @author Jochen Theodorou
 * @author Paul King
 * @author <a href="mailto:james@coredevelopers.net">James Strachan
 */
public class ImportNode extends AnnotatedNode implements Opcodes {

    private final ClassNode type;
    private final String alias;
    private final String fieldName;
    // TODO use PackageNode instead here?
    private final String packageName;
    private final boolean isStar;
    private final boolean isStatic;

    /**
     * Represent an import of an entire package, i.e. import package.Classname
     *
     * @param type  the referenced class
     * @param alias optional alias
     */
    public ImportNode(ClassNode type, String alias) {
        this.type = type;
        this.alias = alias;
        this.isStar = false;
        this.isStatic = false;
        this.packageName = null;
        this.fieldName = null;
    }

    /**
     * Represent an import of an entire package, i.e. import package.*
     *
     * @param packageName the name of the package
     */
    public ImportNode(String packageName) {
        this.type = null;
        this.alias = null;
        this.isStar = true;
        this.isStatic = false;
        this.packageName = packageName;
        this.fieldName = null;
    }

    /**
     * Represent a static import of a Class, i.e. import static package.Classname.*
     *
     * @param type the referenced class
     */
    public ImportNode(ClassNode type) {
        this.type = type;
        this.alias = null;
        this.isStar = true;
        this.isStatic = true;
        this.packageName = null;
        this.fieldName = null;
    }

    /**
     * Represent a static import of a field or method, i.e. import static package.Classname.name
     *
     * @param type      the referenced class
     * @param fieldName the field name
     * @param alias     optional alias
     */
    public ImportNode(ClassNode type, String fieldName, String alias) {
        this.type = type;
        this.alias = alias;
        this.isStar = false;
        this.isStatic = true;
        this.packageName = null;
        this.fieldName = fieldName;
    }

    /**
     * @return the text display of this import
     */
    public String getText() {
        String typeName = getClassName();
        if (isStar && !isStatic) {
            return "import " + packageName + "*";
        }
        if (isStar) {
            return "import static " + typeName + ".*";
        }
        if (isStatic) {
            if (alias != null && alias.length() != 0 && !alias.equals(fieldName)) {
                return "import static " + typeName + "." + fieldName + " as " + alias;
            }
            return "import static " + typeName + "." + fieldName;
        }
        if (alias == null || alias.length() == 0) {
            return "import " + typeName;
        }
        return "import " + typeName + " as " + alias;
    }

    public String getPackageName() {
        return packageName;
    }

    public String getFieldName() {
        return fieldName;
    }

    public boolean isStar() {
        return isStar;
    }

    public boolean isStatic() {
        return isStatic;
    }

    public String getAlias() {
        return alias;
    }

    public ClassNode getType() {
        return type;
    }

    public String getClassName() {
        return type == null ? null : type.getName();
    }

    public void visit(GroovyCodeVisitor visitor) {
    }

}

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