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package com.sun.org.apache.bcel.internal.util;
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import com.sun.org.apache.bcel.internal.classfile.*;
import java.io.*;
/**
* Convert found attributes into HTML file.
*
* @version $Id: AttributeHTML.java,v 1.1.2.1 2005/07/31 23:47:02 jeffsuttor Exp $
* @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
*
*/
final class AttributeHTML implements com.sun.org.apache.bcel.internal.Constants {
private String class_name; // name of current class
private PrintWriter file; // file to write to
private int attr_count = 0;
private ConstantHTML constant_html;
private ConstantPool constant_pool;
AttributeHTML(String dir, String class_name, ConstantPool constant_pool,
ConstantHTML constant_html) throws IOException
{
this.class_name = class_name;
this.constant_pool = constant_pool;
this.constant_html = constant_html;
file = new PrintWriter(new FileOutputStream(dir + class_name + "_attributes.html"));
file.println("<HTML><BODY BGCOLOR=\"#C0C0C0\"><TABLE BORDER=0>");
}
private final String codeLink(int link, int method_number) {
return "<A HREF=\"" + class_name + "_code.html#code" +
method_number + "@" + link + "\" TARGET=Code>" +
link + "</A>";
}
final void close() {
file.println("</TABLE></BODY></HTML>");
file.close();
}
final void writeAttribute(Attribute attribute, String anchor) throws IOException {
writeAttribute(attribute, anchor, 0);
}
final void writeAttribute(Attribute attribute, String anchor, int method_number) throws IOException {
byte tag = attribute.getTag();
int index;
if(tag == ATTR_UNKNOWN) // Don't know what to do about this one
return;
attr_count++; // Increment number of attributes found so far
if(attr_count % 2 == 0)
file.print("<TR BGCOLOR=\"#C0C0C0\"><TD>");
else
file.print("<TR BGCOLOR=\"#A0A0A0\"><TD>");
file.println("<H4><A NAME=\"" + anchor + "\">" + attr_count + " " + ATTRIBUTE_NAMES[tag] + "</A></H4>");
/* Handle different attributes
*/
switch(tag) {
case ATTR_CODE:
Code c = (Code)attribute;
// Some directly printable values
file.print("<UL><LI>Maximum stack size = " + c.getMaxStack() +
"</LI>\n<LI>Number of local variables = " +
c.getMaxLocals() + "</LI>\n<LI><A HREF=\"" + class_name +
"_code.html#method" + method_number + "\" TARGET=Code>Byte code</A></LI></UL>\n");
// Get handled exceptions and list them
CodeException[] ce = c.getExceptionTable();
int len = ce.length;
if(len > 0) {
file.print("<P><B>Exceptions handled</B><UL>");
for(int i=0; i < len; i++) {
int catch_type = ce[i].getCatchType(); // Index in constant pool
file.print("<LI>");
if(catch_type != 0)
file.print(constant_html.referenceConstant(catch_type)); // Create Link to _cp.html
else
file.print("Any Exception");
file.print("<BR>(Ranging from lines " + codeLink(ce[i].getStartPC(), method_number) +
" to " + codeLink(ce[i].getEndPC(), method_number) + ", handled at line " +
codeLink(ce[i].getHandlerPC(), method_number) + ")</LI>");
}
file.print("</UL>");
}
break;
case ATTR_CONSTANT_VALUE:
index = ((ConstantValue)attribute).getConstantValueIndex();
// Reference _cp.html
file.print("<UL><LI><A HREF=\"" + class_name + "_cp.html#cp" + index +
"\" TARGET=\"ConstantPool\">Constant value index(" + index +")</A></UL>\n");
break;
case ATTR_SOURCE_FILE:
index = ((SourceFile)attribute).getSourceFileIndex();
// Reference _cp.html
file.print("<UL><LI><A HREF=\"" + class_name + "_cp.html#cp" + index +
"\" TARGET=\"ConstantPool\">Source file index(" + index +")</A></UL>\n");
break;
case ATTR_EXCEPTIONS:
// List thrown exceptions
int[] indices = ((ExceptionTable)attribute).getExceptionIndexTable();
file.print("<UL>");
for(int i=0; i < indices.length; i++)
file.print("<LI><A HREF=\"" + class_name + "_cp.html#cp" + indices[i] +
"\" TARGET=\"ConstantPool\">Exception class index(" + indices[i] + ")</A>\n");
file.print("</UL>\n");
break;
case ATTR_LINE_NUMBER_TABLE:
LineNumber[] line_numbers =((LineNumberTable)attribute).getLineNumberTable();
// List line number pairs
file.print("<P>");
for(int i=0; i < line_numbers.length; i++) {
file.print("(" + line_numbers[i].getStartPC() + ", " + line_numbers[i].getLineNumber() + ")");
if(i < line_numbers.length - 1)
file.print(", "); // breakable
}
break;
case ATTR_LOCAL_VARIABLE_TABLE:
LocalVariable[] vars = ((LocalVariableTable)attribute).getLocalVariableTable();
// List name, range and type
file.print("<UL>");
for(int i=0; i < vars.length; i++) {
index = vars[i].getSignatureIndex();
String signature = ((ConstantUtf8)constant_pool.getConstant(index, CONSTANT_Utf8)).getBytes();
signature = Utility.signatureToString(signature, false);
int start = vars[i].getStartPC();
int end = (start + vars[i].getLength());
file.println("<LI>" + Class2HTML.referenceType(signature) +
" <B>" + vars[i].getName() + "</B> in slot %" + vars[i].getIndex() +
"<BR>Valid from lines " +
"<A HREF=\"" + class_name + "_code.html#code" + method_number + "@" + start + "\" TARGET=Code>" +
start + "</A> to " +
"<A HREF=\"" + class_name + "_code.html#code" + method_number + "@" + end + "\" TARGET=Code>" +
end + "</A></LI>");
}
file.print("</UL>\n");
break;
case ATTR_INNER_CLASSES:
InnerClass[] classes = ((InnerClasses)attribute).getInnerClasses();
// List inner classes
file.print("<UL>");
for(int i=0; i < classes.length; i++) {
String name, access;
index = classes[i].getInnerNameIndex();
if(index > 0)
name =((ConstantUtf8)constant_pool.getConstant(index, CONSTANT_Utf8)).getBytes();
else
name = "<anonymous>";
access = Utility.accessToString(classes[i].getInnerAccessFlags());
file.print("<LI><FONT COLOR=\"#FF0000\">" + access + "</FONT> "+
constant_html.referenceConstant(classes[i].getInnerClassIndex()) +
" in class " +
constant_html.referenceConstant(classes[i].getOuterClassIndex()) +
" named " + name + "</LI>\n");
}
file.print("</UL>\n");
break;
default: // Such as Unknown attribute or Deprecated
file.print("<P>" + attribute.toString());
}
file.println("</TD></TR>");
file.flush();
}
}