public static String declarationToDescriptor(String decl) {
int leftParen = decl.indexOf('(');
int rightParen = decl.indexOf(')');
if (leftParen == -1 || rightParen == -1) {
throw new IllegalArgumentException();
}
StringBuilder buf = new StringBuilder();
String descriptor;
buf.append('(');
String args = decl.substring(leftParen + 1, rightParen);
StringTokenizer st = new StringTokenizer(args, ",");
while (st.hasMoreTokens()) {
String arg = st.nextToken().trim();
descriptor = primitives.get(arg);
if (arg.length() == 0) {
throw new IllegalArgumentException();
}
if (descriptor == null) {
descriptor = objectOrArrayType(arg);
}
buf.append(descriptor);
}
buf.append(')');
String returnType = decl.substring(0, leftParen).trim();
descriptor = primitives.get(returnType);
if (returnType.length() == 0) {
throw new IllegalArgumentException();
}
if (descriptor == null) {
descriptor = objectOrArrayType(returnType);
}
buf.append(descriptor);
return buf.toString();
}
public static String getJavaType(String desc) {
int arrIndex = desc.lastIndexOf("[") + 1;
desc = desc.substring(arrIndex);
if (desc.startsWith("L")) {
desc = desc.substring(1, desc.length() - 1).replace('/', '.');
} else {
for (Map.Entry<String, String> entry : primitives.entrySet()) {
if (entry.getValue().equals(desc)) {
desc = entry.getKey();
break;
}
}
}
StringBuilder sb = new StringBuilder(desc);
for (int i = 0; i < arrIndex; i++) {
sb.append("[]");
}
return sb.toString();
}
public static String objectOrArrayType(String type) {
StringBuilder buf = new StringBuilder();
int index = 0;
while ((index = type.indexOf("[]", index) + 1) > 0) {
buf.append('[');
}
String t = type.substring(0, type.length() - buf.length() * 2);
String desc = primitives.get(t);
if (desc != null) {
buf.append(desc);
} else {
buf.append('L');
if (t.indexOf('.') < 0) {
buf.append(t);
} else {
buf.append(t.replace('.', '/'));
}
buf.append(';');
}
return buf.toString();
}