jdk8u.jaxp.org.apache.bcel.external.util.MethodHTML Maven / Gradle / Ivy

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/*
 * reserved comment block
 * DO NOT REMOVE OR ALTER!
 */
package jdk8u.jaxp.org.apache.bcel.external.util;

/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 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 end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" and
 *    "Apache BCEL" must not be used to endorse or promote products
 *    derived from this software without prior written permission. For
 *    written permission, please contact [email protected].
 *
 * 5. Products derived from this software may not be called "Apache",
 *    "Apache BCEL", nor may "Apache" appear in their name, without
 *    prior written permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 */

import jdk8u.jaxp.org.apache.bcel.external.classfile.*;
import java.io.*;

/**
 * Convert methods and fields into HTML file.
 *
 * @author  M. Dahm
 *
 */
final class MethodHTML implements jdk8u.jaxp.org.apache.bcel.external.Constants {
  private String        class_name;     // name of current class
  private PrintWriter   file;           // file to write to
  private ConstantHTML  constant_html;
  private AttributeHTML attribute_html;

  MethodHTML(String dir, String class_name,
             Method[] methods, Field[] fields,
             ConstantHTML constant_html, AttributeHTML attribute_html) throws IOException
  {
    this.class_name     = class_name;
    this.attribute_html = attribute_html;
    this.constant_html  = constant_html;

    file = new PrintWriter(new FileOutputStream(dir + class_name + "_methods.html"));

    file.println("");
    file.println("" +
                 "");
    for(int i=0; i < fields.length; i++)
      writeField(fields[i]);
    file.println("Access flags Type Field name");

    file.println("" +
                 "" +
                 "");
    for(int i=0; i < methods.length; i++)
      writeMethod(methods[i], i);

    file.println("Access flags Return type Method name Arguments
");
    file.close();
  }

  /**
   * Print field of class.
   *
   * @param field field to print
   * @exception java.io.IOException
   */
  private void writeField(Field field) throws IOException {
    String       type   = Utility.signatureToString(field.getSignature());
    String       name   = field.getName();
    String       access = Utility.accessToString(field.getAccessFlags());
    Attribute[]  attributes;

    access = Utility.replace(access, " ", " ");

    file.print("" + access + "\n" +
               Class2HTML.referenceType(type) + "" +
               name + "");

    attributes = field.getAttributes();

    // Write them to the Attributes.html file with anchor "[]"
    for(int i=0; i < attributes.length; i++)
      attribute_html.writeAttribute(attributes[i], name + "@" + i);

    for(int i=0; i < attributes.length; i++) {
      if(attributes[i].getTag() == ATTR_CONSTANT_VALUE) { // Default value
        String str = ((ConstantValue)attributes[i]).toString();

        // Reference attribute in _attributes.html
        file.print("= " + str + "\n");
        break;
      }
    }

    file.println("");
  }

  private final void writeMethod(Method method, int method_number) throws IOException {
    // Get raw signature
    String       signature      = method.getSignature();
    // Get array of strings containing the argument types
    String[]     args           = Utility.methodSignatureArgumentTypes(signature, false);
    // Get return type string
    String       type           = Utility.methodSignatureReturnType(signature, false);
    // Get method name
    String       name           = method.getName(), html_name;
    // Get method's access flags
    String       access         = Utility.accessToString(method.getAccessFlags());
    // Get the method's attributes, the Code Attribute in particular
    Attribute[]  attributes     = method.getAttributes();

    /* HTML doesn't like names like  and spaces are places to break
     * lines. Both we don't want...
     */
    access      = Utility.replace(access, " ", " ");
    html_name   = Class2HTML.toHTML(name);

    file.print("" +
               access + "");

    file.print("" + Class2HTML.referenceType(type) + "" +
               "" + html_name + "\n(");

    for(int i=0; i < args.length; i++) {
      file.print(Class2HTML.referenceType(args[i]));
      if(i < args.length - 1)
        file.print(", ");
    }

    file.print(")");

    // Check for thrown exceptions
    for(int i=0; i < attributes.length; i++) {
      attribute_html.writeAttribute(attributes[i], "method" + method_number + "@" + i,
                                    method_number);

      byte tag = attributes[i].getTag();
      if(tag == ATTR_EXCEPTIONS) {
        file.print("throws");
        int[] exceptions = ((ExceptionTable)attributes[i]).getExceptionIndexTable();

        for(int j=0; j < exceptions.length; j++) {
          file.print(constant_html.referenceConstant(exceptions[j]));

          if(j < exceptions.length - 1)
            file.print(", ");
        }
        file.println("");
      } else if(tag == ATTR_CODE) {
        Attribute[] c_a = ((Code)attributes[i]).getAttributes();

        for(int j=0; j < c_a.length; j++)
          attribute_html.writeAttribute(c_a[j], "method" + method_number + "@" + i + "@" + j,
                                        method_number);
      }
    }
  }
}