/**
* Determines whether or not the given AST is in a valid hash code method. A valid hash code
* method is considered to be a method of the signature {@code public int hashCode()}.
*
* @param ast the AST from which to search for an enclosing hash code method definition
* @return {@code true} if {@code ast} is in the scope of a valid hash code method
*/
private boolean isInHashCodeMethod(DetailAST ast) {
// if not in a code block, can't be in hashCode()
if (!ScopeUtils.inCodeBlock(ast)) {
return false;
}
// find the method definition AST
DetailAST methodDefAST = ast.getParent();
while (null != methodDefAST && TokenTypes.METHOD_DEF != methodDefAST.getType()) {
methodDefAST = methodDefAST.getParent();
}
if (null == methodDefAST) {
return false;
}
// Check for 'hashCode' name.
final DetailAST identAST = methodDefAST.findFirstToken(TokenTypes.IDENT);
if (!"hashCode".equals(identAST.getText())) {
return false;
}
// Check for no arguments.
final DetailAST paramAST = methodDefAST.findFirstToken(TokenTypes.PARAMETERS);
// we are in a 'public int hashCode()' method! The compiler will ensure
// the method returns an 'int' and is public.
return 0 == paramAST.getChildCount();
}
