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();
}
