org.exolab.javasource.JInterface Maven / Gradle / Ivy
/**
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided
* that the following conditions are met:
*
* 1. Redistributions of source code must retain copyright
* statements and notices. Redistributions must also contain a
* copy of this document.
*
* 2. Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* 3. The name "Exolab" must not be used to endorse or promote
* products derived from this Software without prior written
* permission of Intalio, Inc. For written permission,
* please contact [email protected].
*
* 4. Products derived from this Software may not be called "Exolab"
* nor may "Exolab" appear in their names without prior written
* permission of Intalio, Inc. Exolab is a registered
* trademark of Intalio, Inc.
*
* 5. Due credit should be given to the Exolab Project
* (http://www.exolab.org/).
*
* THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* INTALIO, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Copyright 2001-2002 (C) Intalio, Inc. All Rights Reserved.
*/
package org.exolab.javasource;
import java.util.Enumeration;
import java.util.Vector;
/**
* A representation of the Java Source code for a Java Interface. This is a
* useful utility when creating in memory source code. The code in this package
* was modelled after the Java Reflection API as much as possible to reduce the
* learning curve.
*
* @author Martin Skopp
* @author Keith Visco
* @version $Revision: 6673 $ $Date: 2005-02-26 17:30:28 -0700 (Sat, 26 Feb 2005) $
*/
public final class JInterface extends JStructure {
//--------------------------------------------------------------------------
/** Default size of the map for fields. */
private static final int DEFAULT_FIELD_MAP_SIZE = 3;
//--------------------------------------------------------------------------
/** The fields for this JInterface. */
private JNamedMap _fields;
/** The list of methods of this JInterface. */
private Vector _methods;
//--------------------------------------------------------------------------
/**
* Creates a new JInterface with the given name.
*
* @param name The name of the JInterface.
*/
public JInterface(final String name) {
super(name);
_fields = null;
_methods = new Vector();
//-- initialize default Java doc
getJDocComment().appendComment("Interface " + getLocalName() + ".");
}
//--------------------------------------------------------------------------
/**
* {@inheritDoc}
*/
public void addImport(final String className) {
if (className == null || className.length() == 0) { return; }
addImportInternal(className);
}
/**
* Adds the given JMember to this Jinterface.
*
* This method is implemented by subclasses and should only accept the
* proper types for the subclass otherwise an IllegalArgumentException will
* be thrown.
*
* @param jMember The JMember to add to this JStructure.
*/
public void addMember(final JMember jMember) {
if (jMember == null) {
throw new IllegalArgumentException("argument 'jMember' may not be null.");
}
if (jMember instanceof JField) {
addField((JField) jMember);
} else {
throw new IllegalArgumentException("invalid member for JInterface: "
+ jMember.toString());
}
}
/**
* Returns an array of all the JFields of this Jinterface.
*
* @return An array of all the JFields of this Jinterface.
*/
public JField[] getFields() {
if (_fields == null) {
return new JField[0];
}
int size = _fields.size();
JField[] farray = new JField[size];
for (int i = 0; i < size; i++) {
farray[i] = (JField) _fields.get(i);
}
return farray;
}
/**
* Returns the field with the given name, or null if no field was found with
* the given name.
*
* @param name The name of the field to return.
* @return The field with the given name, or null if no field was found with
* the given name.
*/
public JField getField(final String name) {
if (_fields == null) { return null; }
return (JField) _fields.get(name);
}
/**
* Adds the given JField to this Jinterface.
*
* This method is implemented by subclasses and should only accept the
* proper fields for the subclass otherwise an IllegalArgumentException will
* be thrown. For example a JInterface will only accept static fields.
*
* @param jField The JField to add.
*/
public void addField(final JField jField) {
if (jField == null) {
throw new IllegalArgumentException("argument 'jField' cannot be null");
}
String name = jField.getName();
//-- check for duplicate field name
if ((_fields != null) && (_fields.get(name) != null)) {
String err = "duplicate name found: " + name;
throw new IllegalArgumentException(err);
}
//-- check for proper modifiers
JModifiers modifiers = jField.getModifiers();
if (!modifiers.isStatic()) {
String err = "Fields added to a JInterface must be static.";
throw new IllegalArgumentException(err);
}
if (modifiers.isPrivate()) {
String err = "Fields added to a JInterface must not be private.";
throw new IllegalArgumentException(err);
}
//-- only initialize fields if we need it, many interfaces
//-- don't contain any fields, no need to waste space
if (_fields == null) {
_fields = new JNamedMap(DEFAULT_FIELD_MAP_SIZE);
}
_fields.put(name, jField);
// if member is of a type not imported by this class
// then add import
JType type = jField.getType();
while (type.isArray()) {
type = ((JArrayType) type).getComponentType();
}
if (!type.isPrimitive()) {
addImport(((JClass) type).getName());
}
// ensure annotation classes are imported
addImport(jField.getAnnotations());
}
/**
* Returns an array of all the JMethodSignatures of this JInterface.
*
* @return An array of all the JMethodSignatures of this JInterface.
*/
public JMethodSignature[] getMethods() {
JMethodSignature[] marray = new JMethodSignature[_methods.size()];
_methods.copyInto(marray);
return marray;
}
/**
* Returns the JMethodSignature with the given name and occuring at or
* after the given starting index.
*
* @param name The name of the JMethodSignature to return.
* @param startIndex The starting index to begin searching from.
* @return The JMethodSignature, or null if not found.
*/
public JMethodSignature getMethod(final String name, final int startIndex) {
for (int i = startIndex; i < _methods.size(); i++) {
JMethodSignature jMethod = (JMethodSignature) _methods.elementAt(i);
if (jMethod.getName().equals(name)) { return jMethod; }
}
return null;
}
/**
* Returns the JMethodSignature at the given index.
*
* @param index The index of the JMethodSignature to return.
* @return The JMethodSignature at the given index.
*/
public JMethodSignature getMethod(final int index) {
return (JMethodSignature) _methods.elementAt(index);
}
/**
* Adds the given JMethodSignature to this Jinterface.
*
* @param jMethodSig The JMethodSignature to add.
*/
public void addMethod(final JMethodSignature jMethodSig) {
if (jMethodSig == null) {
String err = "The JMethodSignature cannot be null.";
throw new IllegalArgumentException(err);
}
//-- check method name and signatures *add later*
//-- keep method list sorted for esthetics when printing
//-- START SORT :-)
boolean added = false;
JModifiers modifiers = jMethodSig.getModifiers();
for (int i = 0; i < _methods.size(); i++) {
JMethodSignature tmp = (JMethodSignature) _methods.elementAt(i);
//-- first compare modifiers
if (tmp.getModifiers().isProtected() && !modifiers.isProtected()) {
_methods.insertElementAt(jMethodSig, i);
added = true;
break;
}
//-- compare names
if (jMethodSig.getName().compareTo(tmp.getName()) < 0) {
_methods.insertElementAt(jMethodSig, i);
added = true;
break;
}
}
//-- END SORT
if (!added) { _methods.addElement(jMethodSig); }
//-- check parameter packages to make sure we have them
//-- in our import list
String[] pkgNames = jMethodSig.getParameterClassNames();
for (int i = 0; i < pkgNames.length; i++) {
addImport(pkgNames[i]);
}
//-- check return type to make sure it's included in the
//-- import list
JType jType = jMethodSig.getReturnType();
if (jType != null) {
while (jType.isArray()) {
jType = ((JArrayType) jType).getComponentType();
}
if (!jType.isPrimitive()) {
addImport(jType.getName());
}
}
//-- check exceptions
JClass[] exceptions = jMethodSig.getExceptions();
for (int i = 0; i < exceptions.length; i++) {
addImport(exceptions[i].getName());
}
//-- ensure method and parameter annotations imported
addImport(jMethodSig.getAnnotations());
JParameter[] params = jMethodSig.getParameters();
for (int i = 0; i < params.length; i++) {
addImport(params[i].getAnnotations());
}
}
//--------------------------------------------------------------------------
/**
* {@inheritDoc}
*/
public void print(final JSourceWriter jsw) {
print(jsw, false);
}
/**
* Prints the source code for this JInterface to the given JSourceWriter.
*
* @param jsw The JSourceWriter to print to. Must not be null.
* @param classOnly If true, generates the class body without the class
* header, package declaration, or imports.
*/
public void print(final JSourceWriter jsw, final boolean classOnly) {
if (jsw == null) {
throw new IllegalArgumentException("argument 'jsw' should not be null.");
}
StringBuffer buffer = new StringBuffer();
if (!classOnly) {
printHeader(jsw);
printPackageDeclaration(jsw);
printImportDeclarations(jsw);
}
getJDocComment().print(jsw);
getAnnotatedElementHelper().printAnnotations(jsw);
buffer.setLength(0);
JModifiers modifiers = getModifiers();
if (modifiers.isPrivate()) {
buffer.append("private ");
} else if (modifiers.isPublic()) {
buffer.append("public ");
}
if (modifiers.isAbstract()) {
buffer.append("abstract ");
}
buffer.append("interface ");
buffer.append(getLocalName());
buffer.append(' ');
if (getInterfaceCount() > 0) {
Enumeration enumeration = getInterfaces();
boolean endl = false;
if (getInterfaceCount() > 1) {
jsw.writeln(buffer.toString());
buffer.setLength(0);
endl = true;
}
buffer.append("extends ");
while (enumeration.hasMoreElements()) {
buffer.append(enumeration.nextElement());
if (enumeration.hasMoreElements()) { buffer.append(", "); }
}
if (endl) {
jsw.writeln(buffer.toString());
buffer.setLength(0);
} else {
buffer.append(' ');
}
}
buffer.append('{');
jsw.writeln(buffer.toString());
buffer.setLength(0);
jsw.writeln();
jsw.indent();
//-- declare static members
if (_fields != null) {
if (_fields.size() > 0) {
jsw.writeln();
jsw.writeln(" //--------------------------/");
jsw.writeln(" //- Class/Member Variables -/");
jsw.writeln("//--------------------------/");
jsw.writeln();
}
for (int i = 0; i < _fields.size(); i++) {
JField jField = (JField) _fields.get(i);
//-- print Java comment
JDocComment comment = jField.getComment();
if (comment != null) { comment.print(jsw); }
// -- annotations
jField.printAnnotations(jsw);
// -- print member
jsw.write(jField.getModifiers().toString());
jsw.write(' ');
JType type = jField.getType();
String typeName = type.toString();
//-- for esthetics use short name in some cases
if (typeName.equals(toString())) {
typeName = type.getLocalName();
}
jsw.write(typeName);
jsw.write(' ');
jsw.write(jField.getName());
String init = jField.getInitString();
if (init != null) {
jsw.write(" = ");
jsw.write(init);
}
jsw.writeln(';');
jsw.writeln();
}
}
//-- print method signatures
if (_methods.size() > 0) {
jsw.writeln();
jsw.writeln(" //-----------/");
jsw.writeln(" //- Methods -/");
jsw.writeln("//-----------/");
jsw.writeln();
}
for (int i = 0; i < _methods.size(); i++) {
JMethodSignature signature = (JMethodSignature) _methods.elementAt(i);
signature.print(jsw);
jsw.writeln(';');
}
jsw.unindent();
jsw.writeln('}');
jsw.flush();
jsw.close();
}
//--------------------------------------------------------------------------
}