/**
* Checks if there is a method with the provided name. In case of multiple methods (overloading),
* only the first method decides if EXISTS_BY_USER or EXISTS_BY_LOMBOK is returned.
*
* @param methodName the method name to check for.
* @param node Any node that represents the Type (JCClassDecl) to look in, or any child node
* thereof.
* @param caseSensitive If the search should be case sensitive.
* @param params The number of parameters the method should have; varargs count as 0-*. Set to -1
* to find any method with the appropriate name regardless of parameter count.
*/
public static MemberExistsResult methodExists(
String methodName, JavacNode node, boolean caseSensitive, int params) {
node = upToTypeNode(node);
if (node != null && node.get() instanceof JCClassDecl) {
for (JCTree def : ((JCClassDecl) node.get()).defs) {
if (def instanceof JCMethodDecl) {
JCMethodDecl md = (JCMethodDecl) def;
String name = md.name.toString();
boolean matches =
caseSensitive ? name.equals(methodName) : name.equalsIgnoreCase(methodName);
if (matches) {
if (params > -1) {
List<JCVariableDecl> ps = md.params;
int minArgs = 0;
int maxArgs = 0;
if (ps != null && ps.length() > 0) {
minArgs = ps.length();
if ((ps.last().mods.flags & Flags.VARARGS) != 0) {
maxArgs = Integer.MAX_VALUE;
minArgs--;
} else {
maxArgs = minArgs;
}
}
if (params < minArgs || params > maxArgs) continue;
}
return getGeneratedBy(def) == null
? MemberExistsResult.EXISTS_BY_USER
: MemberExistsResult.EXISTS_BY_LOMBOK;
}
}
}
}
return MemberExistsResult.NOT_EXISTS;
}
