/**
* Override this method to create you own classes on the fly. The name contains the special token
* $$BCEL$$. Everything before that token is consddered to be a package name. You can encode you
* own arguments into the subsequent string. You must regard however not to use any "illegal"
* characters, i.e., characters that may not appear in a Java class name too<br>
* The default implementation interprets the string as a encoded compressed Java class, unpacks
* and decodes it with the Utility.decode() method, and parses the resulting byte array and
* returns the resulting JavaClass object.
*
* @param class_name compressed byte code with "$$BCEL$$" in it
*/
protected JavaClass createClass(String class_name) {
int index = class_name.indexOf("$$BCEL$$");
String real_name = class_name.substring(index + 8);
JavaClass clazz = null;
try {
byte[] bytes = Utility.decode(real_name, true);
ClassParser parser = new ClassParser(new ByteArrayInputStream(bytes), "foo");
clazz = parser.parse();
} catch (Throwable e) {
e.printStackTrace();
return null;
}
// Adapt the class name to the passed value
ConstantPool cp = clazz.getConstantPool();
ConstantClass cl =
(ConstantClass) cp.getConstant(clazz.getClassNameIndex(), Constants.CONSTANT_Class);
ConstantUtf8 name = (ConstantUtf8) cp.getConstant(cl.getNameIndex(), Constants.CONSTANT_Utf8);
name.setBytes(class_name.replace('.', '/'));
return clazz;
}
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();
}
private void setValue(int index) {
ConstantPool cp = this.cp.getConstantPool();
Constant c = cp.getConstant(index);
value = ((ConstantObject) c).getConstantValue(cp);
}
private void writeConstant(int index) {
byte tag = constants[index].getTag();
int class_index, name_index;
String ref;
// The header is always the same
file.println("<H4> <A NAME=cp" + index + ">" + index + "</A> " + CONSTANT_NAMES[tag] + "</H4>");
/* For every constant type get the needed parameters and print them appropiately
*/
switch (tag) {
case CONSTANT_InterfaceMethodref:
case CONSTANT_Methodref:
// Get class_index and name_and_type_index, depending on type
if (tag == CONSTANT_Methodref) {
ConstantMethodref c =
(ConstantMethodref) constant_pool.getConstant(index, CONSTANT_Methodref);
class_index = c.getClassIndex();
name_index = c.getNameAndTypeIndex();
} else {
ConstantInterfaceMethodref c1 =
(ConstantInterfaceMethodref)
constant_pool.getConstant(index, CONSTANT_InterfaceMethodref);
class_index = c1.getClassIndex();
name_index = c1.getNameAndTypeIndex();
}
// Get method name and its class
String method_name = constant_pool.constantToString(name_index, CONSTANT_NameAndType);
String html_method_name = Class2HTML.toHTML(method_name);
// Partially compacted class name, i.e., / -> .
String method_class = constant_pool.constantToString(class_index, CONSTANT_Class);
String short_method_class =
Utility.compactClassName(method_class); // I.e., remove java.lang.
short_method_class = Utility.compactClassName(method_class); // I.e., remove java.lang.
short_method_class =
Utility.compactClassName(
short_method_class, class_package + ".", true); // Remove class package prefix
// Get method signature
ConstantNameAndType c2 =
(ConstantNameAndType) constant_pool.getConstant(name_index, CONSTANT_NameAndType);
String signature = constant_pool.constantToString(c2.getSignatureIndex(), CONSTANT_Utf8);
// Get array of strings containing the argument types
String[] args = Utility.methodSignatureArgumentTypes(signature, false);
// Get return type string
String type = Utility.methodSignatureReturnType(signature, false);
String ret_type = Class2HTML.referenceType(type);
StringBuffer buf = new StringBuffer("(");
for (int i = 0; i < args.length; i++) {
buf.append(Class2HTML.referenceType(args[i]));
if (i < args.length - 1) buf.append(", ");
}
buf.append(")");
String arg_types = buf.toString();
if (method_class.equals(class_name)) // Method is local to class
ref =
"<A HREF=\""
+ class_name
+ "_code.html#method"
+ getMethodNumber(method_name + signature)
+ "\" TARGET=Code>"
+ html_method_name
+ "</A>";
else
ref =
"<A HREF=\""
+ method_class
+ ".html"
+ "\" TARGET=_top>"
+ short_method_class
+ "</A>."
+ html_method_name;
constant_ref[index] =
ret_type
+ " <A HREF=\""
+ class_name
+ "_cp.html#cp"
+ class_index
+ "\" TARGET=Constants>"
+ short_method_class
+ "</A>.<A HREF=\""
+ class_name
+ "_cp.html#cp"
+ index
+ "\" TARGET=ConstantPool>"
+ html_method_name
+ "</A> "
+ arg_types;
file.println(
"<P><TT>"
+ ret_type
+ " "
+ ref
+ arg_types
+ " </TT>\n<UL>"
+ "<LI><A HREF=\"#cp"
+ class_index
+ "\">Class index("
+ class_index
+ ")</A>\n"
+ "<LI><A HREF=\"#cp"
+ name_index
+ "\">NameAndType index("
+ name_index
+ ")</A></UL>");
break;
case CONSTANT_Fieldref:
// Get class_index and name_and_type_index
ConstantFieldref c3 =
(ConstantFieldref) constant_pool.getConstant(index, CONSTANT_Fieldref);
class_index = c3.getClassIndex();
name_index = c3.getNameAndTypeIndex();
// Get method name and its class (compacted)
String field_class = constant_pool.constantToString(class_index, CONSTANT_Class);
String short_field_class = Utility.compactClassName(field_class); // I.e., remove java.lang.
short_field_class =
Utility.compactClassName(
short_field_class, class_package + ".", true); // Remove class package prefix
String field_name = constant_pool.constantToString(name_index, CONSTANT_NameAndType);
if (field_class.equals(class_name)) // Field is local to class
ref =
"<A HREF=\""
+ field_class
+ "_methods.html#field"
+ field_name
+ "\" TARGET=Methods>"
+ field_name
+ "</A>";
else
ref =
"<A HREF=\""
+ field_class
+ ".html\" TARGET=_top>"
+ short_field_class
+ "</A>."
+ field_name
+ "\n";
constant_ref[index] =
"<A HREF=\""
+ class_name
+ "_cp.html#cp"
+ class_index
+ "\" TARGET=Constants>"
+ short_field_class
+ "</A>.<A HREF=\""
+ class_name
+ "_cp.html#cp"
+ index
+ "\" TARGET=ConstantPool>"
+ field_name
+ "</A>";
file.println(
"<P><TT>"
+ ref
+ "</TT><BR>\n"
+ "<UL>"
+ "<LI><A HREF=\"#cp"
+ class_index
+ "\">Class("
+ class_index
+ ")</A><BR>\n"
+ "<LI><A HREF=\"#cp"
+ name_index
+ "\">NameAndType("
+ name_index
+ ")</A></UL>");
break;
case CONSTANT_Class:
ConstantClass c4 = (ConstantClass) constant_pool.getConstant(index, CONSTANT_Class);
name_index = c4.getNameIndex();
String class_name2 = constant_pool.constantToString(index, tag); // / -> .
String short_class_name = Utility.compactClassName(class_name2); // I.e., remove java.lang.
short_class_name =
Utility.compactClassName(
short_class_name, class_package + ".", true); // Remove class package prefix
ref = "<A HREF=\"" + class_name2 + ".html\" TARGET=_top>" + short_class_name + "</A>";
constant_ref[index] =
"<A HREF=\""
+ class_name
+ "_cp.html#cp"
+ index
+ "\" TARGET=ConstantPool>"
+ short_class_name
+ "</A>";
file.println(
"<P><TT>"
+ ref
+ "</TT><UL>"
+ "<LI><A HREF=\"#cp"
+ name_index
+ "\">Name index("
+ name_index
+ ")</A></UL>\n");
break;
case CONSTANT_String:
ConstantString c5 = (ConstantString) constant_pool.getConstant(index, CONSTANT_String);
name_index = c5.getStringIndex();
String str = Class2HTML.toHTML(constant_pool.constantToString(index, tag));
file.println(
"<P><TT>"
+ str
+ "</TT><UL>"
+ "<LI><A HREF=\"#cp"
+ name_index
+ "\">Name index("
+ name_index
+ ")</A></UL>\n");
break;
case CONSTANT_NameAndType:
ConstantNameAndType c6 =
(ConstantNameAndType) constant_pool.getConstant(index, CONSTANT_NameAndType);
name_index = c6.getNameIndex();
int signature_index = c6.getSignatureIndex();
file.println(
"<P><TT>"
+ Class2HTML.toHTML(constant_pool.constantToString(index, tag))
+ "</TT><UL>"
+ "<LI><A HREF=\"#cp"
+ name_index
+ "\">Name index("
+ name_index
+ ")</A>\n"
+ "<LI><A HREF=\"#cp"
+ signature_index
+ "\">Signature index("
+ signature_index
+ ")</A></UL>\n");
break;
default:
file.println(
"<P><TT>" + Class2HTML.toHTML(constant_pool.constantToString(index, tag)) + "</TT>\n");
} // switch
}