v2/jam/src/org/apache/xmlbeans/impl/jam/internal/elements/MethodImpl.java

/*   Copyright 2004 The Apache Software Foundation
 *
 *   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.apache.xmlbeans.impl.jam.internal.elements;

import org.apache.xmlbeans.impl.jam.JClass;
import org.apache.xmlbeans.impl.jam.JParameter;
import org.apache.xmlbeans.impl.jam.visitor.MVisitor;
import org.apache.xmlbeans.impl.jam.visitor.JVisitor;
import org.apache.xmlbeans.impl.jam.mutable.MMethod;
import org.apache.xmlbeans.impl.jam.internal.classrefs.DirectJClassRef;
import org.apache.xmlbeans.impl.jam.internal.classrefs.JClassRef;
import org.apache.xmlbeans.impl.jam.internal.classrefs.QualifiedJClassRef;
import org.apache.xmlbeans.impl.jam.internal.classrefs.UnqualifiedJClassRef;

import java.lang.reflect.Modifier;
import java.io.StringWriter;



/**
 * <p>Standard implementation of MMethod.  It's probably bad inheritance to
 * extend ConstructorImpl, but it's convenient and no one should ever care
 * since this is a private class; there is no inheritance between method and
 * constructor in the public API.</p>
 *
 * @author Patrick Calahan &lt;email: pcal-at-bea-dot-com&gt;
 */
public final class MethodImpl extends InvokableImpl implements MMethod {

  // ========================================================================
  // Variables

  private JClassRef mReturnTypeRef = null;

  // ========================================================================
  // Constructors

  /*package*/ MethodImpl(String simpleName, ClassImpl containingClass) {
    super(containingClass);
    setSimpleName(simpleName);
  }

  // ========================================================================
  // MMethod implementation

  public void setReturnType(String className) {
    mReturnTypeRef = QualifiedJClassRef.create
            (className,(ClassImpl)getContainingClass());
  }

  public void setUnqualifiedReturnType(String unqualifiedTypeName) {
    mReturnTypeRef = UnqualifiedJClassRef.create
            (unqualifiedTypeName,(ClassImpl)getContainingClass());
  }

  public void setReturnType(JClass c) {
    mReturnTypeRef = DirectJClassRef.create(c);
  }

  // ========================================================================
  // JMethod implementation

  public JClass getReturnType() {
    if (mReturnTypeRef == null) {
      return getClassLoader().loadClass("void");
    } else {
      return mReturnTypeRef.getRefClass();
    }
  }

  public boolean isFinal() {
    return Modifier.isFinal(getModifiers());
  }

  public boolean isStatic() {
    return Modifier.isStatic(getModifiers());
  }

  public boolean isAbstract() {
    return Modifier.isAbstract(getModifiers());
  }

  public boolean isNative() {
    return Modifier.isNative(getModifiers());
  }

  public boolean isSynchronized() {
    return Modifier.isSynchronized(getModifiers());
  }

  // ========================================================================
  // Element implementation

  public void accept(MVisitor visitor) { visitor.visit(this); }

  public void accept(JVisitor visitor) { visitor.visit(this); }

  public String getQualifiedName() {
    StringWriter sbuf = new StringWriter();
    sbuf.write(Modifier.toString(getModifiers()));
    sbuf.write(' ');
    JClass returnJClass = getReturnType();
    if (returnJClass == null){
      sbuf.write("void ");  // should not happen
    } else {
      sbuf.write(returnJClass.getQualifiedName());
      sbuf.write(' ');
    }
    sbuf.write(getSimpleName());
    sbuf.write('(');
    {
    JParameter[] params = getParameters();
    if (params != null && params.length > 0) {
      for(int i=0; i<params.length; i++) {
        sbuf.write(params[i].getType().getQualifiedName());
        if (i<params.length-1) sbuf.write(',');
      }
    }
    }
    sbuf.write(')');
    {
      JClass[] thrown = getExceptionTypes();
      if (thrown != null && thrown.length > 0) {
        sbuf.write(" throws ");
        for(int i=0; i<thrown.length; i++) {
          sbuf.write(thrown[i].getQualifiedName());
          if (i<thrown.length-1) sbuf.write(',');
        }
      }
    }
    return sbuf.toString();
  }
}