org.mvel2.util.Varargs Maven / Gradle / Ivy
package org.mvel2.util;
import java.lang.reflect.Array;
public class Varargs {
public static Object[] normalizeArgsForVarArgs(Class[] parameterTypes, Object[] args, boolean isVarArgs) {
if (!isVarArgs) return args;
Object lastArgument = args.length > 0 ? args[args.length - 1] : Array
.newInstance(parameterTypes[parameterTypes.length - 1].getComponentType(), 0);
if (parameterTypes.length == args.length && (lastArgument == null || lastArgument.getClass().isArray())) return args;
int varargLength = args.length - parameterTypes.length + 1;
Object vararg = Array.newInstance(parameterTypes[parameterTypes.length - 1].getComponentType(), varargLength);
for (int i = 0; i < varargLength; i++)
Array.set(vararg, i, args[parameterTypes.length - 1 + i]);
Object[] normalizedArgs = new Object[parameterTypes.length];
for (int i = 0; i < parameterTypes.length - 1; i++)
normalizedArgs[i] = args[i];
normalizedArgs[parameterTypes.length - 1] = vararg;
return normalizedArgs;
}
public static Class paramTypeVarArgsSafe(Class[] parameterTypes, int i, boolean isVarArgs) {
if (!isVarArgs) return parameterTypes[i];
if (i < parameterTypes.length - 1) return parameterTypes[i];
return parameterTypes[parameterTypes.length - 1].getComponentType();
}
}