/**
* 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;
}
/**
* Initialize with given array of constants.
*
* @param c array of given constants, new ones will be appended
*/
public ConstantPoolGen(Constant[] cs) {
if (cs.length > size) {
size = cs.length;
constants = new Constant[size];
}
System.arraycopy(cs, 0, constants, 0, cs.length);
if (cs.length > 0) index = cs.length;
for (int i = 1; i < index; i++) {
Constant c = constants[i];
if (c instanceof ConstantString) {
ConstantString s = (ConstantString) c;
ConstantUtf8 u8 = (ConstantUtf8) constants[s.getStringIndex()];
string_table.put(u8.getBytes(), new Index(i));
} else if (c instanceof ConstantClass) {
ConstantClass s = (ConstantClass) c;
ConstantUtf8 u8 = (ConstantUtf8) constants[s.getNameIndex()];
class_table.put(u8.getBytes(), new Index(i));
} else if (c instanceof ConstantNameAndType) {
ConstantNameAndType n = (ConstantNameAndType) c;
ConstantUtf8 u8 = (ConstantUtf8) constants[n.getNameIndex()];
ConstantUtf8 u8_2 = (ConstantUtf8) constants[n.getSignatureIndex()];
n_a_t_table.put(u8.getBytes() + NAT_DELIM + u8_2.getBytes(), new Index(i));
} else if (c instanceof ConstantUtf8) {
ConstantUtf8 u = (ConstantUtf8) c;
utf8_table.put(u.getBytes(), new Index(i));
} else if (c instanceof ConstantCP) {
ConstantCP m = (ConstantCP) c;
ConstantClass clazz = (ConstantClass) constants[m.getClassIndex()];
ConstantNameAndType n = (ConstantNameAndType) constants[m.getNameAndTypeIndex()];
ConstantUtf8 u8 = (ConstantUtf8) constants[clazz.getNameIndex()];
String class_name = u8.getBytes().replace('/', '.');
u8 = (ConstantUtf8) constants[n.getNameIndex()];
String method_name = u8.getBytes();
u8 = (ConstantUtf8) constants[n.getSignatureIndex()];
String signature = u8.getBytes();
String delim = METHODREF_DELIM;
if (c instanceof ConstantInterfaceMethodref) delim = IMETHODREF_DELIM;
else if (c instanceof ConstantFieldref) delim = FIELDREF_DELIM;
cp_table.put(class_name + delim + method_name + delim + signature, new Index(i));
}
}
}
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
}
/** Import constant from another ConstantPool and return new index. */
public int addConstant(Constant c, ConstantPoolGen cp) {
Constant[] constants = cp.getConstantPool().getConstantPool();
switch (c.getTag()) {
case Constants.CONSTANT_String:
{
ConstantString s = (ConstantString) c;
ConstantUtf8 u8 = (ConstantUtf8) constants[s.getStringIndex()];
return addString(u8.getBytes());
}
case Constants.CONSTANT_Class:
{
ConstantClass s = (ConstantClass) c;
ConstantUtf8 u8 = (ConstantUtf8) constants[s.getNameIndex()];
return addClass(u8.getBytes());
}
case Constants.CONSTANT_NameAndType:
{
ConstantNameAndType n = (ConstantNameAndType) c;
ConstantUtf8 u8 = (ConstantUtf8) constants[n.getNameIndex()];
ConstantUtf8 u8_2 = (ConstantUtf8) constants[n.getSignatureIndex()];
return addNameAndType(u8.getBytes(), u8_2.getBytes());
}
case Constants.CONSTANT_Utf8:
return addUtf8(((ConstantUtf8) c).getBytes());
case Constants.CONSTANT_Double:
return addDouble(((ConstantDouble) c).getBytes());
case Constants.CONSTANT_Float:
return addFloat(((ConstantFloat) c).getBytes());
case Constants.CONSTANT_Long:
return addLong(((ConstantLong) c).getBytes());
case Constants.CONSTANT_Integer:
return addInteger(((ConstantInteger) c).getBytes());
case Constants.CONSTANT_InterfaceMethodref:
case Constants.CONSTANT_Methodref:
case Constants.CONSTANT_Fieldref:
{
ConstantCP m = (ConstantCP) c;
ConstantClass clazz = (ConstantClass) constants[m.getClassIndex()];
ConstantNameAndType n = (ConstantNameAndType) constants[m.getNameAndTypeIndex()];
ConstantUtf8 u8 = (ConstantUtf8) constants[clazz.getNameIndex()];
String class_name = u8.getBytes().replace('/', '.');
u8 = (ConstantUtf8) constants[n.getNameIndex()];
String name = u8.getBytes();
u8 = (ConstantUtf8) constants[n.getSignatureIndex()];
String signature = u8.getBytes();
switch (c.getTag()) {
case Constants.CONSTANT_InterfaceMethodref:
return addInterfaceMethodref(class_name, name, signature);
case Constants.CONSTANT_Methodref:
return addMethodref(class_name, name, signature);
case Constants.CONSTANT_Fieldref:
return addFieldref(class_name, name, signature);
default: // Never reached
throw new RuntimeException("Unknown constant type " + c);
}
}
default: // Never reached
throw new RuntimeException("Unknown constant type " + c);
}
}