DreamAbstractVariableTest.java

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/*
 * MIT License
 *
 * Copyright (c) 2025 Dreamfire Studio
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.dreamfirestudios.dreamcore.DreamVariable;
 
import com.dreamfirestudios.dreamcore.DreamPersistentData.PersistentDataTypes;
 
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.List;
 
public abstract class DreamAbstractVariableTest<T> {
 
    private final PersistentDataTypes pdt;
    private final Class<T> valueType;
    private final List<Class<?>> supported;
 
    protected DreamAbstractVariableTest(PersistentDataTypes pdt, Class<T> valueType, boolean includePrimitive, boolean includeArray) {
        this.pdt = pdt;
        this.valueType = valueType;
        this.supported = new ArrayList<>();
        this.supported.add(valueType);
 
        Class<?> primitive = boxedToPrimitive(valueType);
        if (includePrimitive && primitive != null){
            supported.add(primitive);
        }
 
        if (includeArray) {
            supported.add(Array.newInstance(valueType, 0).getClass());
            if (primitive != null) supported.add(Array.newInstance(primitive, 0).getClass());
        }
    }
 
    protected DreamAbstractVariableTest(PersistentDataTypes pdt, Class<T> valueType) {
        this(pdt, valueType, true, true);
    }
 
    public final PersistentDataTypes persistentType() { return pdt; }
    public final Class<T> valueType() { return valueType; }
    public final List<Class<?>> supportedTypes() { return List.copyOf(supported); }
 
    protected abstract T parseImpl(String raw);
    public abstract T defaultValue();
 
    public T parse(String raw) {
        if (raw == null) throw new IllegalArgumentException("raw cannot be null");
        return parseImpl(raw.trim());
    }
 
    public Object serialize(Object value) {
        if (value == null) return null;
        if (value.getClass().isArray()) {
            int len = Array.getLength(value);
            Object[] out = new Object[len];
            for (int i = 0; i < len; i++) out[i] = serialize(Array.get(value, i));
            return out;
        }
        return value.toString();
    }
 
    public Object deserialize(Object storageValue) {
        if (storageValue == null) return null;
        if (storageValue.getClass().isArray()) {
            int len = Array.getLength(storageValue);
            Object arr = Array.newInstance(valueType, len);
            for (int i = 0; i < len; i++) {
                Array.set(arr, i, parse(String.valueOf(Array.get(storageValue, i))));
            }
            return arr;
        }
        return parse(String.valueOf(storageValue));
    }
 
    public boolean isType(Object variable) {
        if (variable == null) return false;
        for (Class<?> c : supported) if (c.isInstance(variable)) return true;
        try { parse(String.valueOf(variable)); return true; } catch (RuntimeException ex) { return false; }
    }
 
    private static Class<?> boxedToPrimitive(Class<?> boxed) {
        if (boxed == Boolean.class) return boolean.class;
        if (boxed == Integer.class) return int.class;
        if (boxed == Long.class) return long.class;
        if (boxed == Double.class) return double.class;
        if (boxed == Float.class) return float.class;
        if (boxed == Short.class) return short.class;
        if (boxed == Byte.class) return byte.class;
        if (boxed == Character.class) return char.class;
        return null;
    }
}