feat!(value): Redesigned the Configuration api

core/pom.xml

@@ -18,14 +18,6 @@
     <artifactId>easyconfiguration-core</artifactId>
     <packaging>jar</packaging>
 
-    <dependencies>
-        <dependency>
-            <groupId>cc.carm.lib</groupId>
-            <artifactId>easyoptions</artifactId>
-            <version>1.1.0</version>
-        </dependency>
-    </dependencies>
-
     <build>
         <plugins>
             <plugin>

core/src/main/java/cc/carm/lib/configuration/Configuration.java

@@ -2,8 +2,6 @@ package cc.carm.lib.configuration;
 
 /**
  * The root interface of the configuration file interfaces,
- * which is used to label and record the configuration information.
+ * which is used to label a class as a configuration.
  */
-public interface Configuration {
-
-}
+public interface Configuration { }

core/src/main/java/cc/carm/lib/configuration/adapter/ValueAdapter.java

@@ -1,52 +1,77 @@
 package cc.carm.lib.configuration.adapter;
 
 import cc.carm.lib.configuration.source.ConfigurationProvider;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Objects;
 
 /**
  * Value adapter, used to convert the value of the configuration file into the objects.
  *
- * @param <B> The type of the base data
- * @param <V> The type of the target value
+ * @param <TYPE> The type of the target value
  */
-public abstract class ValueAdapter<B, V> implements ValueSerializer<B, V>, ValueDeserializer<B, V> {
+public class ValueAdapter<TYPE>
+        implements ValueSerializer<TYPE>, ValueParser<TYPE> {
 
-    protected final Class<? super B> baseType;
-    protected final Class<? super V> valueType;
+    protected final @NotNull ValueType<TYPE> type;
+    protected @Nullable ValueSerializer<TYPE> serializer;
+    protected @Nullable ValueParser<TYPE> deserializer;
 
-    protected ValueAdapter(Class<? super B> baseType, Class<? super V> valueType) {
-        this.baseType = baseType;
-        this.valueType = valueType;
+    public ValueAdapter(@NotNull ValueType<TYPE> type) {
+        this(type, null, null);
     }
 
-    public Class<? super B> getBaseClass() {
-        return baseType;
+    public ValueAdapter(@NotNull ValueType<TYPE> type,
+                        @Nullable ValueSerializer<TYPE> serializer,
+                        @Nullable ValueParser<TYPE> deserializer) {
+        this.type = type;
+        this.serializer = serializer;
+        this.deserializer = deserializer;
     }
 
-    public Class<? super V> getValueClass() {
-        return valueType;
+    public @NotNull ValueType<TYPE> type() {
+        return type;
     }
 
-    public boolean isAdaptedFrom(Class<?> clazz) {
-        return clazz.isAssignableFrom(valueType);
+    public @Nullable ValueSerializer<TYPE> serializer() {
+        return serializer;
     }
 
-    public boolean isAdaptedFrom(Object object) {
-        return isAdaptedFrom(object.getClass());
+    public @Nullable ValueParser<TYPE> deserializer() {
+        return deserializer;
     }
 
-    public boolean isAdaptedTo(Class<?> clazz) {
-        return clazz == valueType;
+    public void serializer(@Nullable ValueSerializer<TYPE> serializer) {
+        this.serializer = serializer;
     }
 
-    @SuppressWarnings("unchecked")
-    protected final V deserializeObject(ConfigurationProvider<?> provider, Class<?> valueClass, Object data) throws Exception {
-        return deserialize(provider, (Class<? extends V>) valueClass, (B) data);
+    public void deserializer(@Nullable ValueParser<TYPE> deserializer) {
+        this.deserializer = deserializer;
     }
 
-    @SuppressWarnings("unchecked")
-    protected final B serializeObject(ConfigurationProvider<?> provider, Object value) throws Exception {
-        return serialize(provider, (V) value);
+    @Override
+    public Object serialize(@NotNull ConfigurationProvider<?> provider, @NotNull ValueType<? super TYPE> type, @NotNull TYPE value) throws Exception {
+        if (serializer == null) throw new UnsupportedOperationException("Serializer is not supported");
+        return serializer.serialize(provider, type, value);
     }
 
+    @Override
+    public TYPE deserialize(@NotNull ConfigurationProvider<?> provider, @NotNull ValueType<? super TYPE> type, @NotNull Object value) throws Exception {
+        if (deserializer == null) throw new UnsupportedOperationException("Deserializer is not supported");
+        return deserializer.deserialize(provider, type, value);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (!(o instanceof ValueAdapter)) return false;
+        ValueAdapter<?> that = (ValueAdapter<?>) o;
+        return Objects.equals(type, that.type);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(type);
+    }
 }
 

core/src/main/java/cc/carm/lib/configuration/adapter/ValueAdapterRegistry.java

@@ -1,91 +1,125 @@
 package cc.carm.lib.configuration.adapter;
 
-import cc.carm.lib.configuration.adapter.strandard.PrimitiveAdapters;
 import cc.carm.lib.configuration.function.ConfigDataFunction;
 import cc.carm.lib.configuration.source.ConfigurationProvider;
 import org.jetbrains.annotations.Contract;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
-import java.util.HashMap;
-import java.util.Map;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
 
 public class ValueAdapterRegistry {
 
-    protected final Map<Class<?>, ValueAdapter<?, ?>> adapters = new HashMap<>();
+    protected final Set<ValueAdapter<?>> adapters = new HashSet<>();
 
-    public void register(@NotNull ValueAdapter<?, ?> adapter) {
-        adapters.put(adapter.getValueClass(), adapter);
+    public <FROM, TO> void register(@NotNull Class<FROM> from, @NotNull Class<TO> to,
+                                    @Nullable ConfigDataFunction<FROM, TO> parser,
+                                    @Nullable ConfigDataFunction<TO, FROM> serializer) {
+        register(ValueType.of(from), ValueType.of(to), parser, serializer);
     }
 
-    public <T> void register(Class<T> clazz, @NotNull ValueAdapter<?, T> adapter) {
-        adapters.put(clazz, adapter);
+    public <FROM, TO> void register(@NotNull ValueType<FROM> from, @NotNull ValueType<TO> to,
+                                    @Nullable ConfigDataFunction<FROM, TO> parser,
+                                    @Nullable ConfigDataFunction<TO, FROM> serializer) {
+        ValueAdapter<FROM> fromAdapter = adapterOf(from);
+        if (fromAdapter == null) throw new IllegalArgumentException("No adapter for type " + from);
+        register(to,
+                serializer == null ? null : (provider, type, value) -> fromAdapter.serialize(provider, from, serializer.handle(value)),
+                parser == null ? null : (provider, type, data) -> parser.handle(fromAdapter.deserialize(provider, from, data))
+        );
     }
 
-    public <B, V> void register(Class<B> baseClass, Class<V> valueClass,
-                                ConfigDataFunction<B, V> parser,
-                                ConfigDataFunction<V, B> serializer) {
-        register(new ValueAdapter<B, V>(baseClass, valueClass) {
-            @Override
-            public B serialize(@NotNull ConfigurationProvider<?> provider, @NotNull V value) throws Exception {
-                return serializer.parse(value);
+    public void register(@NotNull ValueAdapter<?>... adapter) {
+        adapters.addAll(Arrays.asList(adapter));
     }
 
-            @Override
-            public V deserialize(@NotNull ConfigurationProvider<?> provider, @NotNull Class<? extends V> clazz, @NotNull B data) throws Exception {
-                return parser.parse(data);
-            }
-        });
+    public <T> void register(@NotNull Class<T> type, @NotNull ValueSerializer<T> serializer) {
+        register(ValueType.of(type), serializer);
     }
 
-    public void unregister(@NotNull Class<?> typeClass) {
-        adapters.remove(typeClass);
+    public <T> void register(@NotNull ValueType<T> type, @NotNull ValueSerializer<T> serializer) {
+        ValueAdapter<T> existing = adapterOf(type);
+        if (existing != null) {
+            existing.serializer(serializer);
+        } else {
+            register(new ValueAdapter<>(type, serializer, null));
+        }
+    }
+
+    public <T> void register(@NotNull Class<T> type, @NotNull ValueParser<T> deserializer) {
+        register(ValueType.of(type), deserializer);
+    }
+
+    public <T> void register(@NotNull ValueType<T> type, @NotNull ValueParser<T> deserializer) {
+        ValueAdapter<T> existing = adapterOf(type);
+        if (existing != null) {
+            existing.deserializer(deserializer);
+        } else {
+            register(new ValueAdapter<>(type, null, deserializer));
+        }
+    }
+
+    public <T> void register(@NotNull ValueType<T> type, @Nullable ValueSerializer<T> serializer, @Nullable ValueParser<T> deserializer) {
+        if (serializer == null && deserializer == null) return;
+        ValueAdapter<T> existing = adapterOf(type);
+        if (existing != null) {
+            if (serializer != null) existing.serializer(serializer);
+            if (deserializer != null) existing.deserializer(deserializer);
+        } else {
+            register(new ValueAdapter<>(type, serializer, deserializer));
+        }
+    }
+
+    public void unregister(@NotNull Class<?> type) {
+        unregister(ValueType.of(type));
+    }
+
+    public void unregister(@NotNull ValueType<?> type) {
+        adapters.removeIf(adapter -> adapter.type().equals(type));
     }
 
     @SuppressWarnings("unchecked")
-    @Contract("_,_,null -> null")
-    public <T> T deserialize(@NotNull ConfigurationProvider<?> provider, @NotNull Class<T> type, @Nullable Object source) throws Exception {
-        if (source == null) return null; // Null check
-        if (type.isInstance(source)) return type.cast(source); // Not required to deserialize
+    public <T> ValueAdapter<T> adapterOf(@NotNull ValueType<T> type) {
+        ValueAdapter<?> matched = adapters.stream().filter(adapter -> adapter.type().equals(type)).findFirst().orElse(null);
+        if (matched != null) return (ValueAdapter<T>) matched;
 
-        ValueAdapter<?, ?> adapter = getAdapter(type);
-        if (adapter == null) throw new RuntimeException("No adapter for type " + type.getName());
-
-        // Check if value is adapted from given value's type
-        if (adapter.isAdaptedFrom(source)) {
-            return (T) adapter.deserializeObject(provider, type, source);
+        // If no adapter found, try to find the adapter for the super type
+        return (ValueAdapter<T>) adapters.stream()
+                .filter(adapter -> adapter.type().isSubtypeOf(type))
+                .findFirst().orElse(null);
     }
 
-        // Otherwise, we need to deserialize one by one.
-        Object baseValue = deserialize(provider, adapter.getBaseClass(), source);
-        if (baseValue == null) return null; // Null check
+    public <T> ValueAdapter<T> adapterOf(@NotNull T value) {
+        return adapterOf(ValueType.of(value));
+    }
 
-        return (T) adapter.deserializeObject(provider, type, baseValue);
+    public <T> ValueAdapter<T> adapterOf(@NotNull Class<T> type) {
+        return adapterOf(ValueType.of(type));
+    }
+
+    @Contract("_,_,null -> null")
+    public <T> T deserialize(@NotNull ConfigurationProvider<?> provider, @NotNull Class<T> type, @Nullable Object source) throws Exception {
+        return deserialize(provider, ValueType.of(type), source);
+    }
+
+    @Contract("_,_,null -> null")
+    public <T> T deserialize(@NotNull ConfigurationProvider<?> provider, @NotNull ValueType<T> type, @Nullable Object source) throws Exception {
+        if (source == null) return null; // Null check
+        if (type.isInstance(source)) return type.cast(source); // Not required to deserialize
+        ValueAdapter<T> adapter = adapterOf(type);
+        if (adapter == null) throw new RuntimeException("No adapter for type " + type);
+        return adapter.deserialize(provider, type, source);
     }
 
     @Contract("_,null -> null")
     public <T> Object serialize(@NotNull ConfigurationProvider<?> provider, @Nullable T value) throws Exception {
         if (value == null) return null; // Null check
-
-        ValueAdapter<?, ?> adapter = getAdapter(value.getClass());
+        ValueType<T> type = ValueType.of(value);
+        ValueAdapter<T> adapter = adapterOf(type);
         if (adapter == null) return value; // No adapters, try to return the original value
-
-        if (adapter instanceof PrimitiveAdapters) {
-            // If the value is adapted from a primitive type,
-            // we should serialize it into object, then return.
-            return adapter.serializeObject(provider, value);
-        }
-
-        // Otherwise, we need to serialize one by one.
-        return serialize(provider, adapter.serializeObject(provider, value));
-    }
-
-    public ValueAdapter<?, ?> getAdapter(Class<?> clazz) {
-        return adapters.getOrDefault(clazz, findAdapter(clazz));
-    }
-
-    public ValueAdapter<?, ?> findAdapter(Class<?> clazz) {
-        return adapters.values().stream().filter(adapter -> adapter.isAdaptedTo(clazz)).findFirst().orElse(null);
+        return adapter.serialize(provider, type, value);
     }
 
 

core/src/main/java/cc/carm/lib/configuration/adapter/ValueDeserializer.java

@@ -1,17 +0,0 @@
-package cc.carm.lib.configuration.adapter;
-
-import cc.carm.lib.configuration.source.ConfigurationProvider;
-import org.jetbrains.annotations.NotNull;
-
-/**
- * Value deserializer, convert base data to target value.
- *
- * @param <B> The type of base data
- * @param <V> The type of target value
- */
-@FunctionalInterface
-public interface ValueDeserializer<B, V> {
-
-    V deserialize(@NotNull ConfigurationProvider<?> provider, @NotNull Class<? extends V> clazz, @NotNull B data) throws Exception;
-
-}

core/src/main/java/cc/carm/lib/configuration/adapter/ValueParser.java

@@ -0,0 +1,19 @@
+package cc.carm.lib.configuration.adapter;
+
+import cc.carm.lib.configuration.source.ConfigurationProvider;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Value deserializer, convert base data to target value.
+ *
+ * @param <TYPE> The type of target value
+ */
+@FunctionalInterface
+public interface ValueParser<TYPE> {
+
+    TYPE deserialize(
+            @NotNull ConfigurationProvider<?> provider,
+            @NotNull ValueType<? super TYPE> type, @NotNull Object data
+    ) throws Exception;
+
+}

core/src/main/java/cc/carm/lib/configuration/adapter/ValueSerializer.java

@@ -6,12 +6,14 @@ import org.jetbrains.annotations.NotNull;
 /**
  * Value serializer, convert target value to base data.
  *
- * @param <B> The type of base data
- * @param <V> The type of value
+ * @param <TYPE> The type of value
  */
 @FunctionalInterface
-public interface ValueSerializer<B, V> {
+public interface ValueSerializer<TYPE> {
 
-    B serialize(@NotNull ConfigurationProvider<?> provider, @NotNull V value) throws Exception;
+    Object serialize(
+            @NotNull ConfigurationProvider<?> provider,
+            @NotNull ValueType<? super TYPE> type, @NotNull TYPE value
+    ) throws Exception;
 
 }

core/src/main/java/cc/carm/lib/configuration/adapter/ValueType.java

@@ -0,0 +1,150 @@
+package cc.carm.lib.configuration.adapter;
+
+import org.jetbrains.annotations.NotNull;
+
+import java.lang.reflect.ParameterizedType;
+
+import java.lang.reflect.Type;
+import java.util.Objects;
+
+/**
+ * Used to get the generic type.
+ */
+public abstract class ValueType<T> {
+
+    @SuppressWarnings("unchecked")
+    public static <T> ValueType<T> of(@NotNull T value) {
+        return of((Class<T>) value.getClass());
+    }
+
+    public static <T> ValueType<T> of(final Type type) {
+        return new ValueType<T>(type) {
+        };
+    }
+
+    public static <T> ValueType<T> of(final Class<T> clazz) {
+        return of((Type) clazz);
+    }
+
+    /**
+     * Get the generic type of the complex type.
+     *
+     * @param rawType The raw type
+     * @param types   The type arguments
+     * @param <T>     The type
+     * @return The {@link ValueType}
+     */
+    public static <T> ValueType<T> of(final Class<?> rawType, final Type... types) {
+        ParameterizedType parameterizedType = new ParameterizedType() {
+            @Override
+            public @NotNull Type @NotNull [] getActualTypeArguments() {
+                return types;
+            }
+
+            @Override
+            public @NotNull Type getRawType() {
+                return rawType;
+            }
+
+            @Override
+            public Type getOwnerType() {
+                return null;
+            }
+        };
+        return of(parameterizedType);
+    }
+
+    private final Type type;
+
+    protected ValueType() {
+        this.type = ((ParameterizedType) this.getClass().getGenericSuperclass()).getActualTypeArguments()[0];
+    }
+
+    private ValueType(Type type) {
+        this.type = type;
+    }
+
+    public Type getType() {
+        return type;
+    }
+
+    public boolean isSubtypeOf(Class<?> target) {
+        Class<?> rawType = getRawType();
+        return target.isAssignableFrom(rawType);
+    }
+
+    public boolean isSubtypeOf(ValueType<?> target) {
+        return target.isSubtypeOf(getRawType());
+    }
+
+    public boolean isInstance(Object obj) {
+        return obj != null && getRawType().isInstance(obj);
+    }
+
+
+    /**
+     * 提取当前 ValueType 的原始类型（Class 对象）。
+     *
+     * @return 对应的 Class 对象
+     * @throws IllegalStateException 如果无法提取出原始类型
+     */
+    public Class<?> getRawType() {
+        if (type instanceof Class<?>) {
+            return (Class<?>) type;
+        }
+        if (type instanceof ParameterizedType) {
+            ParameterizedType pt = (ParameterizedType) type;
+            Type raw = pt.getRawType();
+            if (raw instanceof Class<?>) {
+                return (Class<?>) raw;
+            }
+        }
+        throw new IllegalStateException("Unsupported type: " + type);
+    }
+
+    @SuppressWarnings("unchecked")
+    public T cast(Object obj) {
+        if (!isInstance(obj)) {
+            throw new ClassCastException("Cannot cast object " + obj + " to type " + this);
+        }
+        return (T) obj;
+    }
+
+    @Override
+    public String toString() {
+        if (type instanceof Class<?>) {
+            return ((Class<?>) type).getName();
+        }
+        if (type instanceof ParameterizedType) {
+            ParameterizedType pt = (ParameterizedType) type;
+            Type raw = pt.getRawType();
+            StringBuilder sb = new StringBuilder();
+            sb.append(raw.getTypeName());
+            sb.append('<');
+            Type[] args = pt.getActualTypeArguments();
+            for (int i = 0; i < args.length; i++) {
+                if (i > 0) {
+                    sb.append(", ");
+                }
+                sb.append(args[i].getTypeName());
+            }
+            return sb.toString();
+        }
+        return type.getTypeName();
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) return true;
+        if (obj instanceof ValueType) {
+            return Objects.equals(type, ((ValueType<?>) obj).type);
+        }
+        return false;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(type);
+    }
+
+}

core/src/main/java/cc/carm/lib/configuration/adapter/strandard/EnumAdapter.java

@@ -1,29 +0,0 @@
-package cc.carm.lib.configuration.adapter.strandard;
-
-import cc.carm.lib.configuration.adapter.ValueAdapter;
-import cc.carm.lib.configuration.source.ConfigurationProvider;
-import org.jetbrains.annotations.NotNull;
-
-@SuppressWarnings({"unchecked", "rawtypes"})
-public class EnumAdapter extends ValueAdapter<String, Enum> {
-
-    public EnumAdapter() {
-        super(String.class, Enum.class);
-    }
-
-    @Override
-    public String serialize(@NotNull ConfigurationProvider<?> provider, @NotNull Enum value) throws Exception {
-        return value.name();
-    }
-
-    @Override
-    public Enum deserialize(@NotNull ConfigurationProvider<?> provider, @NotNull Class<? extends Enum> clazz, @NotNull String data) throws Exception {
-        return Enum.valueOf(clazz, data);
-    }
-
-    @Override
-    public boolean isAdaptedTo(Class<?> clazz) {
-        return clazz.isEnum();
-    }
-
-}

core/src/main/java/cc/carm/lib/configuration/adapter/strandard/PrimitiveAdapters.java

@@ -1,11 +1,27 @@
 package cc.carm.lib.configuration.adapter.strandard;
 
 import cc.carm.lib.configuration.adapter.ValueAdapter;
+import cc.carm.lib.configuration.adapter.ValueParser;
+import cc.carm.lib.configuration.adapter.ValueType;
 import cc.carm.lib.configuration.function.ConfigDataFunction;
-import cc.carm.lib.configuration.source.ConfigurationProvider;
 import org.jetbrains.annotations.NotNull;
 
-public abstract class PrimitiveAdapters<T> extends ValueAdapter<Object, T> {
+public class PrimitiveAdapters<T> extends ValueAdapter<T> {
+
+    public static final PrimitiveAdapters<?>[] ADAPTERS = new PrimitiveAdapters[]{
+            ofString(), ofBoolean(), ofBooleanType(), ofCharacter(), ofCharacterType(),
+            ofInteger(), ofIntegerType(), ofLong(), ofLongType(), ofDouble(), ofDoubleType(),
+            ofFloat(), ofFloatType(), ofShort(), ofShortType(), ofByte(), ofByteType()
+    };
+
+    @SuppressWarnings({"unchecked", "rawtypes"})
+    public static ValueAdapter<Enum<?>> ofEnum() {
+        ValueAdapter<Enum<?>> adapter = new ValueAdapter<>(new ValueType<Enum<?>>() {
+        });
+        adapter.deserializer((provider, type, data) -> Enum.valueOf((Class<Enum>) type.getRawType(), data.toString()));
+        adapter.serializer((provider, type, value) -> value.name());
+        return adapter;
+    }
 
     public static PrimitiveAdapters<String> ofString() {
         return of(String.class, o -> o instanceof String ? (String) o : o.toString());
@@ -15,56 +31,79 @@ public abstract class PrimitiveAdapters<T> extends ValueAdapter<Object, T> {
         return of(Boolean.class, o -> o instanceof Boolean ? (Boolean) o : Boolean.parseBoolean(o.toString()));
     }
 
+    public static PrimitiveAdapters<Boolean> ofBooleanType() {
+        return of(boolean.class, o -> o instanceof Boolean ? (Boolean) o : Boolean.parseBoolean(o.toString()));
+    }
+
     public static PrimitiveAdapters<Character> ofCharacter() {
         return of(Character.class, o -> o instanceof Character ? (Character) o : o.toString().charAt(0));
     }
 
+    public static PrimitiveAdapters<Character> ofCharacterType() {
+        return of(char.class, o -> o instanceof Character ? (Character) o : o.toString().charAt(0));
+    }
+
     public static PrimitiveAdapters<Integer> ofInteger() {
         return ofNumber(Integer.class, Number::intValue, Integer::parseInt);
     }
 
+    public static PrimitiveAdapters<Integer> ofIntegerType() {
+        return ofNumber(int.class, Number::intValue, Integer::parseInt);
+    }
+
     public static PrimitiveAdapters<Long> ofLong() {
         return ofNumber(Long.class, Number::longValue, Long::parseLong);
     }
 
+    public static PrimitiveAdapters<Long> ofLongType() {
+        return ofNumber(long.class, Number::longValue, Long::parseLong);
+    }
+
     public static PrimitiveAdapters<Double> ofDouble() {
         return ofNumber(Double.class, Number::doubleValue, Double::parseDouble);
     }
 
+    public static PrimitiveAdapters<Double> ofDoubleType() {
+        return ofNumber(double.class, Number::doubleValue, Double::parseDouble);
+    }
+
     public static PrimitiveAdapters<Float> ofFloat() {
         return ofNumber(Float.class, Number::floatValue, Float::parseFloat);
     }
 
+    public static PrimitiveAdapters<Float> ofFloatType() {
+        return ofNumber(float.class, Number::floatValue, Float::parseFloat);
+    }
+
     public static PrimitiveAdapters<Short> ofShort() {
         return ofNumber(Short.class, Number::shortValue, Short::parseShort);
     }
 
+    public static PrimitiveAdapters<Short> ofShortType() {
+        return ofNumber(short.class, Number::shortValue, Short::parseShort);
+    }
+
     public static PrimitiveAdapters<Byte> ofByte() {
         return ofNumber(Byte.class, Number::byteValue, Byte::parseByte);
     }
 
-    protected PrimitiveAdapters(Class<T> valueType) {
-        super(Object.class, valueType);
-    }
-
-    @Override
-    public Object serialize(@NotNull ConfigurationProvider<?> provider, @NotNull T value) throws Exception {
-        return value;
+    public static PrimitiveAdapters<Byte> ofByteType() {
+        return ofNumber(byte.class, Number::byteValue, Byte::parseByte);
     }
 
     public static <T> PrimitiveAdapters<T> of(@NotNull Class<T> clazz,
                                               @NotNull ConfigDataFunction<Object, T> function) {
-        return new PrimitiveAdapters<T>(clazz) {
-            @Override
-            public T deserialize(@NotNull ConfigurationProvider<?> provider, @NotNull Class<? extends T> clazz, @NotNull Object data) throws Exception {
-                return function.parse(data);
-            }
-        };
+        return new PrimitiveAdapters<>(clazz, (p, type, data) -> function.handle(data));
     }
 
     public static <T extends Number> PrimitiveAdapters<T> ofNumber(@NotNull Class<T> numberClass,
                                                                    @NotNull ConfigDataFunction<Number, T> castFunction,
                                                                    @NotNull ConfigDataFunction<String, T> parseFunction) {
-        return of(numberClass, o -> o instanceof Number ? castFunction.parse((Number) o) : parseFunction.parse(o.toString()));
+        return of(numberClass, o -> o instanceof Number ? castFunction.handle((Number) o) : parseFunction.handle(o.toString()));
     }
+
+    protected PrimitiveAdapters(@NotNull Class<T> valueType, @NotNull ValueParser<T> deserializer) {
+        super(ValueType.of(valueType), (provider, type, value) -> value, deserializer);
+    }
+
 }

core/src/main/java/cc/carm/lib/configuration/adapter/strandard/StandardAdapters.java

@@ -0,0 +1,19 @@
+package cc.carm.lib.configuration.adapter.strandard;
+
+import cc.carm.lib.configuration.adapter.ValueAdapter;
+import cc.carm.lib.configuration.adapter.ValueType;
+import cc.carm.lib.configuration.source.section.ConfigurationSection;
+
+public interface StandardAdapters {
+
+    ValueAdapter<ConfigurationSection> SECTION_ADAPTER = new ValueAdapter<>(
+            ValueType.of(ConfigurationSection.class),
+            (provider, type, value) -> value,
+            (provider, type, value) -> {
+                if (value instanceof ConfigurationSection) {
+                    return (ConfigurationSection) value;
+                } else throw new IllegalArgumentException("Value is not a ConfigurationSection");
+            }
+    );
+
+}

core/src/main/java/cc/carm/lib/configuration/annotation/ConfigPath.java

@@ -1,6 +1,6 @@
 package cc.carm.lib.configuration.annotation;
 
-import cc.carm.lib.configuration.loader.PathGenerator;
+import cc.carm.lib.configuration.source.loader.PathGenerator;
 
 import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;

core/src/main/java/cc/carm/lib/configuration/builder/AbstractConfigBuilder.java

@@ -0,0 +1,51 @@
+package cc.carm.lib.configuration.builder;
+
+import cc.carm.lib.configuration.source.ConfigurationProvider;
+import cc.carm.lib.configuration.value.ConfigValue;
+import cc.carm.lib.configuration.value.ValueManifest;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.function.Supplier;
+
+public abstract class AbstractConfigBuilder<T, B extends AbstractConfigBuilder<T, B, P>, P extends ConfigurationProvider<?>> {
+
+    protected final Class<? super P> providerClass;
+
+    protected @Nullable P provider;
+    protected @Nullable String path;
+
+    protected @NotNull Supplier<T> defaultValueSupplier = () -> null;
+
+    protected AbstractConfigBuilder(Class<? super P> providerClass) {
+        this.providerClass = providerClass;
+    }
+
+    protected abstract @NotNull B self();
+
+    public abstract @NotNull ConfigValue<?> build();
+
+    public @NotNull B from(@Nullable P provider) {
+        this.provider = provider;
+        return self();
+    }
+
+    public @NotNull B path(@Nullable String path) {
+        this.path = path;
+        return self();
+    }
+
+    public @NotNull B defaults(@Nullable T defaultValue) {
+        return defaults(() -> defaultValue);
+    }
+
+    public @NotNull B defaults(@NotNull Supplier<@Nullable T> supplier) {
+        this.defaultValueSupplier = supplier;
+        return self();
+    }
+
+    protected @NotNull ValueManifest<T> buildManifest() {
+        return null;
+    }
+
+}

core/src/main/java/cc/carm/lib/configuration/builder/CommonConfigBuilder.java

@@ -0,0 +1,12 @@
+package cc.carm.lib.configuration.builder;
+
+import cc.carm.lib.configuration.source.ConfigurationProvider;
+
+public abstract class CommonConfigBuilder<T, B extends CommonConfigBuilder<T, B>>
+        extends AbstractConfigBuilder<T, B, ConfigurationProvider<?>> {
+
+    protected CommonConfigBuilder() {
+        super(ConfigurationProvider.class);
+    }
+
+}

core/src/main/java/cc/carm/lib/configuration/builder/value/ConfigValueBuilder.java

@@ -0,0 +1,78 @@
+package cc.carm.lib.configuration.builder.value;
+
+import cc.carm.lib.configuration.adapter.ValueType;
+import cc.carm.lib.configuration.function.ConfigDataFunction;
+import cc.carm.lib.configuration.function.ConfigValueHandler;
+import cc.carm.lib.configuration.source.section.ConfigurationSection;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Map;
+
+public class ConfigValueBuilder<V> {
+
+    protected final @NotNull ValueType<V> type;
+
+    public ConfigValueBuilder(@NotNull ValueType<V> type) {
+        this.type = type;
+    }
+
+    public @NotNull <S> SourceValueBuilder<S, V> from(@NotNull Class<S> clazz) {
+        return new SourceValueBuilder<>(ValueType.of(clazz), this.type);
+    }
+
+    public @NotNull <S> SourceValueBuilder<S, V> from(@NotNull ValueType<S> sourceType) {
+        return new SourceValueBuilder<>(sourceType, this.type);
+    }
+
+    public @NotNull <S> SourceValueBuilder<S, V> from(@NotNull ValueType<S> sourceType,
+                                                      @NotNull ConfigValueHandler<S, V> valueParser,
+                                                      @NotNull ConfigValueHandler<V, S> valueSerializer) {
+        return new SourceValueBuilder<>(sourceType, this.type, valueParser, valueSerializer);
+    }
+
+    public @NotNull SourceValueBuilder<String, V> fromString() {
+        return from(String.class);
+    }
+
+    public @NotNull SourceValueBuilder<Integer, V> fromInteger() {
+        return from(Integer.class);
+    }
+
+    public @NotNull SourceValueBuilder<Long, V> fromLong() {
+        return from(Long.class);
+    }
+
+    public @NotNull SourceValueBuilder<Double, V> fromDouble() {
+        return from(Double.class);
+    }
+
+    public @NotNull SourceValueBuilder<Float, V> fromFloat() {
+        return from(Float.class);
+    }
+
+    public @NotNull SourceValueBuilder<Boolean, V> fromBoolean() {
+        return from(Boolean.class);
+    }
+
+    public @NotNull SourceValueBuilder<Character, V> fromCharacter() {
+        return from(Character.class);
+    }
+
+    public @NotNull SourceValueBuilder<Byte, V> fromByte() {
+        return from(Byte.class);
+    }
+
+    public @NotNull SourceValueBuilder<Short, V> fromShort() {
+        return from(Short.class);
+    }
+
+    public @NotNull SectionValueBuilder<V> fromSection() {
+        return new SectionValueBuilder<>(this.type);
+    }
+
+    public @NotNull SectionValueBuilder<V> fromSection(@NotNull ConfigValueHandler<ConfigurationSection, V> valueParser,
+                                                       @NotNull ConfigValueHandler<V, ? extends Map<String, Object>> valueSerializer) {
+        return new SectionValueBuilder<>(this.type, valueParser, valueSerializer);
+    }
+
+}

core/src/main/java/cc/carm/lib/configuration/builder/value/SectionValueBuilder.java

@@ -0,0 +1,81 @@
+package cc.carm.lib.configuration.builder.value;
+
+import cc.carm.lib.configuration.adapter.ValueType;
+import cc.carm.lib.configuration.builder.CommonConfigBuilder;
+import cc.carm.lib.configuration.function.ConfigDataFunction;
+import cc.carm.lib.configuration.function.ConfigValueHandler;
+import cc.carm.lib.configuration.source.section.ConfigurationSection;
+import cc.carm.lib.configuration.value.standard.ConfiguredValue;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.function.Consumer;
+
+public class SectionValueBuilder<V> extends CommonConfigBuilder<V, SectionValueBuilder<V>> {
+
+    protected final @NotNull ValueType<V> valueType;
+
+    protected @NotNull ConfigValueHandler<ConfigurationSection, V> parser;
+    protected @NotNull ConfigValueHandler<V, ? extends Map<String, Object>> serializer;
+
+    public SectionValueBuilder(@NotNull ValueType<V> valueType) {
+        this(valueType, ConfigValueHandler.required(), ConfigValueHandler.required());
+    }
+
+    public SectionValueBuilder(@NotNull ValueType<V> valueType,
+                               @NotNull ConfigValueHandler<ConfigurationSection, V> parser,
+                               @NotNull ConfigValueHandler<V, ? extends Map<String, Object>> serializer) {
+        this.valueType = valueType;
+        this.parser = parser;
+        this.serializer = serializer;
+    }
+
+    @Override
+    protected @NotNull SectionValueBuilder<V> self() {
+        return this;
+    }
+
+    public @NotNull SectionValueBuilder<V> parse(ConfigDataFunction<ConfigurationSection, V> valueParser) {
+        return parse((p, section) -> valueParser.handle(section));
+    }
+
+    public @NotNull SectionValueBuilder<V> parse(ConfigValueHandler<ConfigurationSection, V> valueParser) {
+        this.parser = valueParser;
+        return this;
+    }
+
+    public @NotNull SectionValueBuilder<V> serialize(ConfigDataFunction<V, ? extends Map<String, Object>> serializer) {
+        return serialize((p, value) -> serializer.handle(value));
+    }
+
+    public @NotNull SectionValueBuilder<V> serialize(ConfigValueHandler<V, ? extends Map<String, Object>> serializer) {
+        this.serializer = serializer;
+        return this;
+    }
+
+    public @NotNull SectionValueBuilder<V> serialize(Consumer<Map<String, Object>> serializer) {
+        return serialize((p, value) -> {
+            Map<String, Object> map = new LinkedHashMap<>();
+            serializer.accept(map);
+            return map;
+        });
+    }
+
+    @Override
+    public @NotNull ConfiguredValue<V> build() {
+        return new ConfiguredValue<>(
+                buildManifest(),
+                (p, type, data) -> {
+                    ConfigurationSection section = p.deserialize(ConfigurationSection.class, data);
+                    if (section == null) return null;
+                    return this.parser.handle(p, section);
+                },
+                (p, type, data) -> {
+                    Map<String, Object> map = this.serializer.handle(p, data);
+                    return map == null || map.isEmpty() ? null : map; // Map is a type of original data
+                }
+        );
+    }
+
+}

core/src/main/java/cc/carm/lib/configuration/builder/value/SourceValueBuilder.java

@@ -0,0 +1,68 @@
+package cc.carm.lib.configuration.builder.value;
+
+import cc.carm.lib.configuration.adapter.ValueType;
+import cc.carm.lib.configuration.builder.CommonConfigBuilder;
+import cc.carm.lib.configuration.function.ConfigDataFunction;
+import cc.carm.lib.configuration.function.ConfigValueHandler;
+import cc.carm.lib.configuration.value.standard.ConfiguredValue;
+import org.jetbrains.annotations.NotNull;
+
+public class SourceValueBuilder<S, V> extends CommonConfigBuilder<V, SourceValueBuilder<S, V>> {
+
+    protected final @NotNull ValueType<S> sourceType;
+    protected final @NotNull ValueType<V> valueType;
+    protected @NotNull ConfigValueHandler<S, V> valueParser;
+    protected @NotNull ConfigValueHandler<V, S> valueSerializer;
+
+    public SourceValueBuilder(@NotNull ValueType<S> sourceType, @NotNull ValueType<V> valueType) {
+        this(sourceType, valueType, ConfigValueHandler.required(), ConfigValueHandler.required());
+    }
+
+    public SourceValueBuilder(@NotNull ValueType<S> sourceType, @NotNull ValueType<V> valueType,
+                              @NotNull ConfigValueHandler<S, V> valueParser,
+                              @NotNull ConfigValueHandler<V, S> valueSerializer) {
+        this.sourceType = sourceType;
+        this.valueType = valueType;
+        this.valueParser = valueParser;
+        this.valueSerializer = valueSerializer;
+    }
+
+    @Override
+    protected @NotNull SourceValueBuilder<S, V> self() {
+        return this;
+    }
+
+    public @NotNull SourceValueBuilder<S, V> parse(ConfigDataFunction<S, V> parser) {
+        return parse((p, source) -> parser.handle(source));
+    }
+
+    public @NotNull SourceValueBuilder<S, V> parse(@NotNull ConfigValueHandler<S, V> parser) {
+        this.valueParser = parser;
+        return this;
+    }
+
+    public @NotNull SourceValueBuilder<S, V> serialize(@NotNull ConfigValueHandler<V, S> serializer) {
+        this.valueSerializer = serializer;
+        return this;
+    }
+
+    public @NotNull SourceValueBuilder<S, V> serialize(@NotNull ConfigDataFunction<V, S> serializer) {
+        return serialize((p, value) -> serializer.handle(value));
+    }
+
+    @Override
+    public @NotNull ConfiguredValue<V> build() {
+        return new ConfiguredValue<>(
+                buildManifest(),
+                (p, type, data) -> {
+                    S source = p.deserialize(this.sourceType, data);
+                    return this.valueParser.handle(p, source);
+                },
+                (p, type, value) -> {
+                    S source = this.valueSerializer.handle(p, value);
+                    return p.serialize(source);
+                }
+        );
+    }
+
+}

core/src/main/java/cc/carm/lib/configuration/function/ConfigDataFunction.java

@@ -9,11 +9,11 @@ import java.util.Objects;
 @FunctionalInterface
 public interface ConfigDataFunction<T, R> {
 
-    @NotNull R parse(@NotNull T data) throws Exception;
+    @NotNull R handle(@NotNull T data) throws Exception;
 
     default <V> @NotNull ConfigDataFunction<T, V> andThen(@NotNull ConfigDataFunction<? super R, V> after) {
         Objects.requireNonNull(after);
-        return data -> after.parse(parse(data));
+        return data -> after.handle(handle(data));
     }
 
     @Contract(pure = true)

core/src/main/java/cc/carm/lib/configuration/function/ConfigValueHandler.java

@@ -0,0 +1,67 @@
+package cc.carm.lib.configuration.function;
+
+
+import cc.carm.lib.configuration.adapter.ValueType;
+import cc.carm.lib.configuration.source.ConfigurationProvider;
+import org.jetbrains.annotations.Contract;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Objects;
+
+@FunctionalInterface
+public interface ConfigValueHandler<T, R> {
+
+    @Nullable R handle(@NotNull ConfigurationProvider<?> provider, @NotNull T data) throws Exception;
+
+    default <V> ConfigValueHandler<T, V> andThen(@NotNull ConfigValueHandler<R, V> after) {
+        Objects.requireNonNull(after);
+        return ((provider, data) -> {
+            R result = handle(provider, data);
+            if (result == null) return null;
+            else return after.handle(provider, result);
+        });
+    }
+
+    default <V> ConfigValueHandler<V, R> compose(@NotNull ConfigValueHandler<? super V, ? extends T> before) {
+        Objects.requireNonNull(before);
+        return ((provider, data) -> {
+            T result = before.handle(provider, data);
+            if (result == null) return null;
+            return handle(provider, result);
+        });
+    }
+
+    default <V> ConfigValueHandler<V, R> compose(@NotNull ConfigDataFunction<? super V, ? extends T> before) {
+        Objects.requireNonNull(before);
+        return ((provider, data) -> {
+            T result = before.handle(data);
+            return handle(provider, result);
+        });
+    }
+
+    @Contract(pure = true)
+    static <T> @NotNull ConfigValueHandler<T, T> identity() {
+        return (provider, input) -> input;
+    }
+
+    @Contract(pure = true)
+    static <T> @NotNull ConfigValueHandler<T, Object> toObject() {
+        return ConfigurationProvider::serialize;
+    }
+
+    @Contract(pure = true)
+    static <T> @NotNull ConfigValueHandler<Object, T> fromObject(ValueType<T> type) {
+        return (provider, input) -> provider.deserialize(type, input);
+    }
+
+
+    @Contract(pure = true)
+    static <T, V> @NotNull ConfigValueHandler<T, V> required() {
+        return (provider, input) -> {
+            throw new IllegalArgumentException("Please specify the value parser.");
+        };
+    }
+}
+
+

core/src/main/java/cc/carm/lib/configuration/function/ConfigValueParser.java

@@ -1,62 +0,0 @@
-package cc.carm.lib.configuration.function;
-
-
-import cc.carm.lib.configuration.source.ConfigurationProvider;
-import org.jetbrains.annotations.Contract;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
-import java.util.Objects;
-
-@FunctionalInterface
-public interface ConfigValueParser<T, R> {
-
-    @Nullable R parse(@NotNull ConfigurationProvider<?> provider,
-                      @NotNull T data, @Nullable R defaultValue) throws Exception;
-
-    default <V> ConfigValueParser<T, V> andThen(@NotNull ConfigValueParser<R, V> after) {
-        Objects.requireNonNull(after);
-        return ((provider, data, defaultValue) -> {
-            R result = parse(provider, data, null);
-            if (result == null) return defaultValue;
-            else return after.parse(provider, result, defaultValue);
-        });
-    }
-
-    default <V> ConfigValueParser<V, R> compose(@NotNull ConfigValueParser<? super V, ? extends T> before) {
-        Objects.requireNonNull(before);
-        return ((provider, data, defaultValue) -> {
-            T result = before.parse(provider, data, null);
-            if (result == null) return null;
-            return parse(provider, result, defaultValue);
-        });
-    }
-
-    default <V> ConfigValueParser<V, R> compose(@NotNull ConfigDataFunction<? super V, ? extends T> before) {
-        Objects.requireNonNull(before);
-        return ((provider, data, defaultValue) -> {
-            T result = before.parse(data);
-            return parse(provider, result, defaultValue);
-        });
-    }
-
-    @Contract(pure = true)
-    static <T> @NotNull ConfigValueParser<T, T> identity() {
-        return (provider, input, defaultValue) -> input;
-    }
-
-    @Contract(pure = true)
-    static <T> @NotNull ConfigValueParser<T, Object> toObject() {
-        return (provider, input, defaultValue) -> input;
-    }
-
-    @Contract(pure = true)
-    static <T, V> @NotNull ConfigValueParser<T, V> required() {
-        return (provider, input, defaultValue) -> {
-            throw new IllegalArgumentException("Please specify the value parser.");
-        };
-    }
-
-}
-
-

core/src/main/java/cc/carm/lib/configuration/meta/PathMetadata.java

@@ -0,0 +1,58 @@
+package cc.carm.lib.configuration.meta;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.function.Function;
+import java.util.function.Supplier;
+
+public class PathMetadata<T> {
+
+    public static <T> PathMetadata<T> of() {
+        return of(() -> null);
+    }
+
+    public static <T> PathMetadata<T> of(T defaults) {
+        return of(() -> defaults);
+    }
+
+    public static <T> PathMetadata<T> of(@NotNull Supplier<@Nullable T> defaults) {
+        return of(v -> defaults.get());
+    }
+
+    public static <T> PathMetadata<T> of(@NotNull Function<String, @Nullable T> defaults) {
+        return new PathMetadata<>(defaults);
+    }
+
+    protected Function<String, @Nullable T> defaultFunction;
+
+    public PathMetadata(@NotNull Function<String, @Nullable T> defaults) {
+        this.defaultFunction = defaults;
+    }
+
+    public boolean isDefault(String path, @NotNull T value) {
+        return value.equals(defaults(path));
+    }
+
+    public boolean hasDefaults(String path) {
+        return defaults(path) != null;
+    }
+
+    public T getDefault(String path, @Nullable T suppliedValue) {
+        T defaults = defaults(path);
+        return defaults == null ? suppliedValue : defaults;
+    }
+
+    public @Nullable T defaults(String path) {
+        return defaultFunction.apply(path);
+    }
+
+    public void setDefaults(Function<String, T> defaultFunction) {
+        this.defaultFunction = defaultFunction;
+    }
+
+    public void setDefaults(T value) {
+        setDefaults((v) -> value);
+    }
+
+}

core/src/main/java/cc/carm/lib/configuration/option/ConfigurationOptions.java

@@ -1,25 +0,0 @@
-package cc.carm.lib.configuration.option;
-
-
-import cc.carm.lib.easyoptions.OptionType;
-
-import static cc.carm.lib.easyoptions.OptionType.of;
-
-public interface ConfigurationOptions {
-
-    /**
-     * The configuration path separator.
-     */
-    OptionType<Character> PATH_SEPARATOR = of('.');
-
-    /**
-     * Whether to set & save default values if offered and not exists in configuration.
-     */
-    OptionType<Boolean> SET_DEFAULTS = of(true);
-
-    /**
-     * Whether to load subclasses of configuration class.
-     */
-    OptionType<Boolean> LOAD_SUB_CLASSES = of(true);
-
-}

core/src/main/java/cc/carm/lib/configuration/source/ConfigurationFactory.java

@@ -1,85 +1,84 @@
 package cc.carm.lib.configuration.source;
 
-import cc.carm.lib.configuration.adapter.ValueAdapter;
 import cc.carm.lib.configuration.adapter.ValueAdapterRegistry;
-import cc.carm.lib.configuration.function.ConfigDataFunction;
-import cc.carm.lib.configuration.loader.ConfigurationLoader;
-import cc.carm.lib.configuration.loader.PathGenerator;
-import cc.carm.lib.easyoptions.OptionHolder;
-import cc.carm.lib.easyoptions.OptionType;
+import cc.carm.lib.configuration.source.loader.ConfigurationLoader;
+import cc.carm.lib.configuration.source.loader.PathGenerator;
+import cc.carm.lib.configuration.source.option.ConfigurationOption;
+import cc.carm.lib.configuration.source.option.ConfigurationOptionHolder;
+import cc.carm.lib.configuration.source.section.ConfigurationSource;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.function.Consumer;
 import java.util.function.Function;
 
-public abstract class ConfigurationFactory<P extends ConfigurationSource<P, ?>, C> {
+public abstract class ConfigurationFactory<SOURCE extends ConfigurationSource<SOURCE, ?>, PROVIDER extends ConfigurationProvider<SOURCE>, SELF> {
 
-    protected Function<P, ConfigurationLoader> loaderFunction = p -> new ConfigurationLoader();
+    protected Function<PROVIDER, ConfigurationLoader> loaderFunction = PROVIDER -> new ConfigurationLoader();
     protected Consumer<ConfigurationLoader> loaderConsumer = loader -> {
     };
 
     protected ValueAdapterRegistry adapters = new ValueAdapterRegistry();
-    protected OptionHolder options = new OptionHolder();
+    protected ConfigurationOptionHolder options = new ConfigurationOptionHolder();
 
-    public abstract C getThis();
+    public abstract SELF self();
 
-    public C loader(Function<P, ConfigurationLoader> loaderFunction) {
+    public SELF loader(Function<PROVIDER, ConfigurationLoader> loaderFunction) {
         this.loaderFunction = loaderFunction;
-        return getThis();
+        return self();
     }
 
-    public C loader(ConfigurationLoader loader) {
-        return loader(p -> loader);
+    public SELF loader(ConfigurationLoader loader) {
+        return loader(PROVIDER -> loader);
     }
 
-    public C loader(Consumer<ConfigurationLoader> loaderConsumer) {
+    public SELF loader(Consumer<ConfigurationLoader> loaderConsumer) {
         this.loaderConsumer = this.loaderConsumer.andThen(loaderConsumer);
-        return getThis();
+        return self();
     }
 
-    public C pathGenerator(PathGenerator pathGenerator) {
+    public SELF pathGenerator(PathGenerator pathGenerator) {
         return loader(loader -> {
             loader.setPathGenerator(pathGenerator);
         });
     }
 
-    public C adapters(ValueAdapterRegistry adapters) {
+    public SELF adapters(ValueAdapterRegistry adapters) {
         this.adapters = adapters;
-        return getThis();
+        return self();
     }
 
-    public C adapter(Consumer<ValueAdapterRegistry> adapterRegistryConsumer) {
+    public SELF adapter(Consumer<ValueAdapterRegistry> adapterRegistryConsumer) {
         adapterRegistryConsumer.accept(adapters);
-        return getThis();
+        return self();
     }
 
-    public C adapter(@NotNull ValueAdapter<?, ?> adapter) {
-        return adapter(a -> a.register(adapter));
-    }
+//    public SELF adapter(@NotNull ValueAdapter<?, ?> adapter) {
+//        return adapter(a -> a.register(adapter));
+//    }
+//
+//    public <T> SELF adapter(Class<T> clazz, @NotNull ValueAdapter<?, T> adapter) {
+//        return adapter(a -> a.register(clazz, adapter));
+//    }
+//
+//    public <B, V> SELF adapter(Class<B> baseClass, Class<V> valueClass,
+//                               ConfigDataFunction<B, V> parser, ConfigDataFunction<V, B> serializer) {
+//        return adapter(a -> a.register(baseClass, valueClass, parser, serializer));
+//    }
 
-    public <T> C adapter(Class<T> clazz, @NotNull ValueAdapter<?, T> adapter) {
-        return adapter(a -> a.register(clazz, adapter));
-    }
-
-    public <B, V> C adapter(Class<B> baseClass, Class<V> valueClass,
-                            ConfigDataFunction<B, V> parser, ConfigDataFunction<V, B> serializer) {
-        return adapter(a -> a.register(baseClass, valueClass, parser, serializer));
-    }
-
-    public C options(OptionHolder options) {
+    public SELF options(ConfigurationOptionHolder options) {
         this.options = options;
-        return getThis();
+        return self();
     }
 
-    public C option(Consumer<OptionHolder> optionsConsumer) {
+    public SELF option(Consumer<ConfigurationOptionHolder> optionsConsumer) {
         optionsConsumer.accept(options);
-        return getThis();
+        return self();
     }
 
-    public <O> C option(OptionType<O> option, O value) {
+    public <O> SELF option(ConfigurationOption<O> option, O value) {
         return option(o -> o.set(option, value));
     }
 
-    public abstract @NotNull P build();
+    public abstract @NotNull PROVIDER build();
 
 }

core/src/main/java/cc/carm/lib/configuration/source/ConfigurationProvider.java

@@ -2,24 +2,36 @@ package cc.carm.lib.configuration.source;
 
 import cc.carm.lib.configuration.Configuration;
 import cc.carm.lib.configuration.adapter.ValueAdapterRegistry;
-import cc.carm.lib.configuration.loader.ConfigurationLoader;
-import cc.carm.lib.easyoptions.OptionHolder;
-import cc.carm.lib.easyoptions.OptionType;
+import cc.carm.lib.configuration.adapter.ValueType;
+import cc.carm.lib.configuration.meta.PathMetadata;
+import cc.carm.lib.configuration.source.loader.ConfigurationLoader;
+import cc.carm.lib.configuration.source.option.ConfigurationOption;
+import cc.carm.lib.configuration.source.option.ConfigurationOptionHolder;
+import cc.carm.lib.configuration.source.section.ConfigurationSource;
+import cc.carm.lib.configuration.value.ValueManifest;
+import org.jetbrains.annotations.Contract;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Map;
 
 public class ConfigurationProvider<S extends ConfigurationSource<S, ?>> {
 
     protected final @NotNull S source;
     protected final @NotNull ConfigurationLoader loader;
     protected final @NotNull ValueAdapterRegistry adapters;
-    protected final @NotNull OptionHolder options;
+    protected final @NotNull ConfigurationOptionHolder options;
+    protected final @NotNull Map<String, Map<PathMetadata<?>, Object>> pathMetadata;
 
     public ConfigurationProvider(@NotNull S source, @NotNull ConfigurationLoader loader,
-                                 @NotNull ValueAdapterRegistry adapters, @NotNull OptionHolder options) {
+                                 @NotNull ValueAdapterRegistry adapters,
+                                 @NotNull ConfigurationOptionHolder options,
+                                 @NotNull Map<String, Map<PathMetadata<?>, Object>> pathMetadata) {
         this.source = source;
         this.loader = loader;
         this.adapters = adapters;
         this.options = options;
+        this.pathMetadata = pathMetadata;
     }
 
     public @NotNull S source() {
@@ -34,15 +46,15 @@ public class ConfigurationProvider<S extends ConfigurationSource<S, ?>> {
         source().save();
     }
 
-    public OptionHolder options() {
+    public ConfigurationOptionHolder options() {
         return options;
     }
 
-    public <T> @NotNull T option(@NotNull OptionType<T> option) {
+    public <T> @NotNull T option(@NotNull ConfigurationOption<T> option) {
         return options.get(option);
     }
 
-    public <T> void option(@NotNull OptionType<T> option, @NotNull T value) {
+    public <T> void option(@NotNull ConfigurationOption<T> option, @NotNull T value) {
         options.set(option, value);
     }
 
@@ -50,11 +62,117 @@ public class ConfigurationProvider<S extends ConfigurationSource<S, ?>> {
         return this.adapters;
     }
 
-
     public ConfigurationLoader loader() {
         return loader;
     }
 
+    public @NotNull Map<String, Map<PathMetadata<?>, Object>> pathMetadata() {
+        return pathMetadata;
+    }
+
+    public @NotNull Map<PathMetadata<?>, Object> metadata(@NotNull String path) {
+        return pathMetadata().computeIfAbsent(path, k -> new java.util.HashMap<>());
+    }
+
+    /**
+     * Get the value of option.
+     *
+     * @param type         {@link PathMetadata}
+     * @param defaultValue Default value if the value of option is not set.
+     * @param <V>          Value type
+     * @return Value of option
+     */
+    @SuppressWarnings("unchecked")
+    @Contract("_,_, !null -> !null")
+    public <V> @Nullable V meta(@NotNull String path,
+                                @NotNull PathMetadata<V> type, @Nullable V defaultValue) {
+        return (V) metadata(path).getOrDefault(type, type.getDefault(path, defaultValue));
+    }
+
+    /**
+     * Get the value of option.
+     *
+     * @param type {@link PathMetadata}
+     * @param <V>  Value type
+     * @return Value of option
+     */
+    public <V> @Nullable V meta(@NotNull String path, @NotNull PathMetadata<V> type) {
+        return meta(path, type, null);
+    }
+
+    public boolean hasMeta(@NotNull String path, @NotNull PathMetadata<?> type) {
+        return metadata(path).containsKey(type) || type.hasDefaults(path);
+    }
+
+    /**
+     * Set the value of meta, if the value is null, the meta will be removed.
+     * <br> Will only be changed in current holder.
+     *
+     * @param type  {@link PathMetadata}
+     * @param value Value of meta
+     * @param <V>   Value type
+     * @return Previous value of meta
+     */
+    @SuppressWarnings("unchecked")
+    public <V> @Nullable V setMeta(@NotNull String path, @NotNull PathMetadata<V> type, @Nullable V value) {
+        if (value == null || type.isDefault(path, value)) {
+            return (V) metadata(path).remove(type);
+        } else {
+            return (V) metadata(path).put(type, value);
+        }
+    }
+
+    /**
+     * Set the value of meta, if the value is null, the meta will not be changed.
+     * <br> Will only be changed in current holder.
+     *
+     * @param type  {@link PathMetadata}
+     * @param value Value of meta
+     * @param <V>   Value type
+     */
+    public <V> void setMetaIfAbsent(@NotNull String path, @NotNull PathMetadata<V> type, @Nullable V value) {
+        if (value == null || type.isDefault(path, value)) {
+            metadata(path).remove(type);
+        } else {
+            metadata(path).putIfAbsent(type, value);
+        }
+    }
+
+    /**
+     * Set the value of meta, if the value is null, the meta will not be changed.
+     * <br> Will only be changed in current holder.
+     *
+     * @param type  {@link PathMetadata}
+     * @param value Value of meta
+     * @param <V>   Value type
+     */
+    @SuppressWarnings("unchecked")
+    public <V> @Nullable V setMetaIfPresent(@NotNull String path, @NotNull PathMetadata<V> type, @Nullable V value) {
+        Object exists = metadata(path).get(type);
+        if (exists == null) return null;
+
+        if (value == null || type.isDefault(path, value)) {
+            return (V) metadata(path).remove(type);
+        } else {
+            return (V) metadata(path).put(type, value);
+        }
+    }
+
+    @Contract("_,null -> null")
+    public <T> T deserialize(@NotNull Class<T> type, @Nullable Object source) throws Exception {
+        return adapters().deserialize(this, type, source);
+    }
+
+    @Contract("_,null -> null")
+    public <T> T deserialize(@NotNull ValueType<T> type, @Nullable Object source) throws Exception {
+        return adapters().deserialize(this, type, source);
+    }
+    
+    @Contract("null -> null")
+    public <T> Object serialize(@Nullable T value) throws Exception {
+        return adapters().serialize(this, value);
+    }
+
     public void load(Class<? extends Configuration> configClass) {
         try {
             loader.load(this, configClass);
@@ -71,4 +189,8 @@ public class ConfigurationProvider<S extends ConfigurationSource<S, ?>> {
         }
     }
 
+    public void load(@NotNull ValueManifest<?> value) {
+        value.provider(this);
+    }
+
 }

core/src/main/java/cc/carm/lib/configuration/source/loader/ConfigurationLoader.java

@@ -1,11 +1,14 @@
-package cc.carm.lib.configuration.loader;
+package cc.carm.lib.configuration.source.loader;
 
 import cc.carm.lib.configuration.Configuration;
 import cc.carm.lib.configuration.source.ConfigurationProvider;
-import cc.carm.lib.configuration.option.ConfigurationOptions;
+import cc.carm.lib.configuration.source.option.ConfigurationOptions;
+import cc.carm.lib.configuration.value.ConfigValue;
+import cc.carm.lib.configuration.value.ValueManifest;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+import java.io.File;
 import java.lang.reflect.Field;
 import java.util.Arrays;
 
@@ -15,6 +18,20 @@ import java.util.Arrays;
  */
 public class ConfigurationLoader {
 
+    public static final Field PATH_FIELD;
+    public static final Field PROVIDER_FIELD;
+
+    static {
+        try {
+            PATH_FIELD = ValueManifest.class.getDeclaredField("path");
+            PATH_FIELD.setAccessible(true);
+            PROVIDER_FIELD = ValueManifest.class.getDeclaredField("provider");
+            PROVIDER_FIELD.setAccessible(true);
+        } catch (NoSuchFieldException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
     protected PathGenerator pathGenerator;
 
     public ConfigurationLoader() {
@@ -83,13 +100,15 @@ public class ConfigurationLoader {
             field.setAccessible(true);
             Object object = field.get(source);
 //
-//            if (object instanceof ConfigValue<?>) {
-//                // 目标是 ConfigValue 实例，进行具体的初始化注入
-//
-//            } else
-
-            if (source instanceof Configuration && object instanceof Configuration) {
-                // 当且仅当 源字段与字段 均为ConfigurationRoot实例时，才对目标字段进行下一步初始化加载。
+            if (object instanceof ConfigValue<?>) {
+                // 目标是 ConfigValue 实例，进行具体的初始化注入
+                ConfigValue<?> value = (ConfigValue<?>) object;
+                String path = getFieldPath(provider, parent, field);
+                if (path == null) return;
+                insertIfAbsent(value, PATH_FIELD, path);
+                insertIfAbsent(value, PROVIDER_FIELD, provider);
+            } else if (source instanceof Configuration && object instanceof Configuration) {
+                // 当且仅当 源字段与字段 均为Configuration实例时，才对目标字段进行下一步初始化加载。
                 initializeInstance(provider, (Configuration) object, parent, field);
             } else if (source instanceof Class<?> && object instanceof Class<?>) {
                 // 当且仅当 源字段与字段 均为静态类时，才对目标字段进行下一步初始化加载。
@@ -97,11 +116,18 @@ public class ConfigurationLoader {
             }
 
             // 以上判断实现以下规范：
-            // - 实例类中仅加载 ConfigValue实例 与 ConfigurationRoot实例
-            // - 静态类中仅加载 静态ConfigValue实例 与 静态ConfigurationRoot类
+            // - 实例类中仅加载 ConfigValue实例 与 Configuration实例
+            // - 静态类中仅加载 静态ConfigValue实例 与 静态Configuration类
 
         } catch (IllegalAccessException ignored) {
         }
     }
 
+    private void insertIfAbsent(@NotNull ValueManifest<?> value, @NotNull Field field, @NotNull Object obj) {
+        try {
+            if (field.get(obj) == null) field.set(obj, value);
+        } catch (IllegalAccessException ignored) {
+        }
+    }
+
 }

core/src/main/java/cc/carm/lib/configuration/source/loader/PathGenerator.java

@@ -1,4 +1,4 @@
-package cc.carm.lib.configuration.loader;
+package cc.carm.lib.configuration.source.loader;
 
 import cc.carm.lib.configuration.source.ConfigurationProvider;
 import org.jetbrains.annotations.NotNull;

core/src/main/java/cc/carm/lib/configuration/source/loader/StandardPathGenerator.java

@@ -1,8 +1,8 @@
-package cc.carm.lib.configuration.loader;
+package cc.carm.lib.configuration.source.loader;
 
 import cc.carm.lib.configuration.annotation.ConfigPath;
 import cc.carm.lib.configuration.source.ConfigurationProvider;
-import cc.carm.lib.configuration.option.ConfigurationOptions;
+import cc.carm.lib.configuration.source.option.ConfigurationOptions;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 

core/src/main/java/cc/carm/lib/configuration/source/option/ConfigurationOption.java

@@ -0,0 +1,46 @@
+package cc.carm.lib.configuration.source.option;
+
+import org.jetbrains.annotations.NotNull;
+
+public class ConfigurationOption<V> {
+
+    @SuppressWarnings("unchecked")
+    public static <T> ConfigurationOption<T> of(@NotNull T defaultValue) {
+        return of((Class<T>) defaultValue.getClass(), defaultValue);
+    }
+
+    public static <T> ConfigurationOption<T> of(@NotNull Class<T> valueClazz, @NotNull T defaultValue) {
+        return new ConfigurationOption<>(valueClazz, defaultValue);
+    }
+
+    private final @NotNull Class<V> valueClazz;
+    private @NotNull V defaultValue;
+
+    public ConfigurationOption(@NotNull Class<V> valueClazz, @NotNull V defaultValue) {
+        this.valueClazz = valueClazz;
+        this.defaultValue = defaultValue;
+    }
+
+    @NotNull
+    public Class<V> valueClass() {
+        return this.valueClazz;
+    }
+
+    public @NotNull V defaults() {
+        return defaultValue;
+    }
+
+    /**
+     * Set the default value of option.
+     *
+     * @param defaultValue Default value
+     */
+    public void defaults(@NotNull V defaultValue) {
+        this.defaultValue = defaultValue;
+    }
+
+    public boolean isDefault(@NotNull V value) {
+        return value.equals(defaultValue);
+    }
+
+}

core/src/main/java/cc/carm/lib/configuration/source/option/ConfigurationOptionHolder.java

@@ -0,0 +1,70 @@
+package cc.carm.lib.configuration.source.option;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Map;
+import java.util.Optional;
+import java.util.concurrent.ConcurrentHashMap;
+
+public class ConfigurationOptionHolder {
+
+    public static <V> @NotNull ConfigurationOptionHolder of(@NotNull Map<ConfigurationOption<V>, V> options) {
+        return new ConfigurationOptionHolder(new ConcurrentHashMap<>(options));
+    }
+
+    protected final Map<ConfigurationOption<?>, Object> options;
+
+    public ConfigurationOptionHolder() {
+        this(new ConcurrentHashMap<>());
+    }
+
+    public ConfigurationOptionHolder(Map<ConfigurationOption<?>, Object> options) {
+        this.options = options;
+    }
+
+    public @NotNull Map<ConfigurationOption<?>, Object> options() {
+        return options;
+    }
+
+    /**
+     * Get the value of option.
+     *
+     * @param type {@link ConfigurationOption}
+     * @param <V>  Value type
+     * @return Value of option
+     */
+    @SuppressWarnings("unchecked")
+    public <V> @NotNull V get(@NotNull ConfigurationOption<V> type) {
+        return Optional.ofNullable(options().get(type)).map(v -> (V) v).orElseGet(type::defaults);
+    }
+
+    /**
+     * Set the value of option.
+     *
+     * @param type  {@link ConfigurationOption}
+     * @param value Value of option
+     * @param <V>   Value type
+     * @return Previous value of option
+     */
+    @SuppressWarnings("unchecked")
+    public <V> @Nullable V set(@NotNull ConfigurationOption<V> type, @Nullable V value) {
+        if (value == null) {
+            return (V) options().remove(type);
+        } else {
+            return (V) options().put(type, value);
+        }
+    }
+
+    /**
+     * Set the value of option to option's {@link ConfigurationOption#defaults()}.
+     *
+     * @param type {@link ConfigurationOption}
+     * @param <V>  Value type
+     * @return Previous value of option
+     */
+    public <V> @Nullable V clear(@NotNull ConfigurationOption<V> type) {
+        return set(type, null);
+    }
+
+}

core/src/main/java/cc/carm/lib/configuration/source/option/ConfigurationOptions.java

@@ -0,0 +1,33 @@
+package cc.carm.lib.configuration.source.option;
+
+import cc.carm.lib.configuration.Configuration;
+
+import static cc.carm.lib.configuration.source.option.ConfigurationOption.of;
+
+public interface ConfigurationOptions {
+
+    /**
+     * The configuration path separator.
+     */
+    ConfigurationOption<Character> PATH_SEPARATOR = of('.');
+
+    /**
+     * Whether to set & save default values if offered and not exists in configuration.
+     */
+    ConfigurationOption<Boolean> SET_DEFAULTS = of(true);
+
+    /**
+     * Whether to load subclasses of configuration class.
+     */
+    ConfigurationOption<Boolean> LOAD_SUB_CLASSES = of(true);
+
+    /**
+     * Whether to pre parse the config values.
+     * <br> if false, the values will be parsed when calling
+     * {@link cc.carm.lib.configuration.value.ConfigValue#get()}
+     * <br> if true, the values will be parsed when
+     * {@link cc.carm.lib.configuration.source.ConfigurationProvider#load(Configuration)}.
+     */
+    ConfigurationOption<Boolean> PRELOAD = of(false);
+
+}

core/src/main/java/cc/carm/lib/configuration/source/section/ConfigurationSection.java

@@ -1,7 +1,6 @@
-package cc.carm.lib.configuration.source;
+package cc.carm.lib.configuration.source.section;
 
 import cc.carm.lib.configuration.function.ConfigDataFunction;
-import cc.carm.lib.configuration.function.ConfigValueParser;
 import org.jetbrains.annotations.Contract;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -12,7 +11,9 @@ import java.util.*;
 public interface ConfigurationSection {
 
     @NotNull
-    Set<String> getKeys(boolean deep);
+    default Set<String> getKeys(boolean deep) {
+        return getValues(deep).keySet();
+    }
 
     @NotNull
     Map<String, Object> getValues(boolean deep);
@@ -40,22 +41,22 @@ public interface ConfigurationSection {
         return get(path, null, clazz);
     }
 
-    default @Nullable <T> T get(@NotNull String path, @NotNull ConfigValueParser<Object, T> parser) {
+    default @Nullable <T> T get(@NotNull String path, @NotNull ConfigDataFunction<Object, T> parser) {
         return get(path, null, parser);
     }
 
     @Contract("_,!null,_->!null")
     default @Nullable <T> T get(@NotNull String path, @Nullable T defaultValue, @NotNull Class<T> clazz) {
-        return get(path, defaultValue, ConfigValueParser.castObject(clazz));
+        return get(path, defaultValue, ConfigDataFunction.castObject(clazz));
     }
 
     @Contract("_,!null,_->!null")
     default @Nullable <T> T get(@NotNull String path, @Nullable T defaultValue,
-                                @NotNull ConfigValueParser<Object, T> parser) {
+                                @NotNull ConfigDataFunction<Object, T> parser) {
         Object value = get(path);
         if (value != null) {
             try {
-                return parser.parse(value, defaultValue);
+                return parser.handle(value);
             } catch (Exception e) {
                 e.printStackTrace();
             }
@@ -74,7 +75,7 @@ public interface ConfigurationSection {
 
     @Contract("_, !null -> !null")
     default @Nullable Boolean getBoolean(@NotNull String path, @Nullable Boolean def) {
-        return get(path, def, ConfigValueParser.booleanValue());
+        return get(path, def, ConfigDataFunction.booleanValue());
     }
 
     default @Nullable Boolean isByte(@NotNull String path) {
@@ -87,7 +88,7 @@ public interface ConfigurationSection {
 
     @Contract("_, !null -> !null")
     default @Nullable Byte getByte(@NotNull String path, @Nullable Byte def) {
-        return get(path, def, ConfigValueParser.byteValue());
+        return get(path, def, ConfigDataFunction.byteValue());
     }
 
     default boolean isShort(@NotNull String path) {
@@ -100,7 +101,7 @@ public interface ConfigurationSection {
 
     @Contract("_, !null -> !null")
     default @Nullable Short getShort(@NotNull String path, @Nullable Short def) {
-        return get(path, def, ConfigValueParser.shortValue());
+        return get(path, def, ConfigDataFunction.shortValue());
     }
 
 
@@ -114,7 +115,7 @@ public interface ConfigurationSection {
 
     @Contract("_, !null -> !null")
     default @Nullable Integer getInt(@NotNull String path, @Nullable Integer def) {
-        return get(path, def, ConfigValueParser.intValue());
+        return get(path, def, ConfigDataFunction.intValue());
     }
 
 
@@ -128,7 +129,7 @@ public interface ConfigurationSection {
 
     @Contract("_, !null -> !null")
     default @Nullable Long getLong(@NotNull String path, @Nullable Long def) {
-        return get(path, def, ConfigValueParser.longValue());
+        return get(path, def, ConfigDataFunction.longValue());
     }
 
 
@@ -142,7 +143,7 @@ public interface ConfigurationSection {
 
     @Contract("_, !null -> !null")
     default @Nullable Float getFloat(@NotNull String path, @Nullable Float def) {
-        return get(path, def, ConfigValueParser.floatValue());
+        return get(path, def, ConfigDataFunction.floatValue());
     }
 
 
@@ -156,7 +157,7 @@ public interface ConfigurationSection {
 
     @Contract("_, !null -> !null")
     default @Nullable Double getDouble(@NotNull String path, @Nullable Double def) {
-        return get(path, def, ConfigValueParser.doubleValue());
+        return get(path, def, ConfigDataFunction.doubleValue());
     }
 
 
@@ -232,7 +233,7 @@ public interface ConfigurationSection {
         List<T> values = new ArrayList<>();
         for (Object o : list) {
             try {
-                values.add(parser.parse(o));
+                values.add(parser.handle(o));
             } catch (Exception ignored) {
             }
         }

core/src/main/java/cc/carm/lib/configuration/source/section/ConfigurationSource.java

@@ -1,10 +1,9 @@
-package cc.carm.lib.configuration.source;
+package cc.carm.lib.configuration.source.section;
 
 import org.jetbrains.annotations.NotNull;
 
-import java.util.Set;
-
-public abstract class ConfigurationSource<S extends ConfigurationSource<S, O>, O> implements ConfigurationSection {
+public abstract class ConfigurationSource<SELF extends ConfigurationSource<SELF, ORIGINAL>, ORIGINAL>
+        implements ConfigurationSection {
 
     protected long updateMillis;
 
@@ -17,25 +16,23 @@ public abstract class ConfigurationSource<S extends ConfigurationSource<S, O>, O
         this.updateMillis = System.currentTimeMillis();
     }
 
-    protected abstract S getThis();
+    protected abstract SELF self();
+
+    /**
+     * @return Original configuration object
+     */
+    public abstract @NotNull ORIGINAL original();
 
     public abstract void save() throws Exception;
 
     protected abstract void onReload() throws Exception;
 
-    public abstract @NotNull O original();
-
-    @NotNull
-    public Set<String> getKeys(boolean deep) {
-        return getValues(deep).keySet();
-    }
-
     public long getUpdateMillis() {
         return this.updateMillis;
     }
 
-    public boolean isExpired(long time) {
-        return getUpdateMillis() > time;
+    public boolean isExpired(long parsedTime) {
+        return getUpdateMillis() > parsedTime;
     }
 
 }

core/src/main/java/cc/carm/lib/configuration/value/ConfigValue.java

@@ -9,12 +9,8 @@ import java.util.Optional;
 
 public abstract class ConfigValue<T> extends ValueManifest<T> {
 
-//    public static @NotNull ConfigBuilder builder() {
-//        return new ConfigBuilder();
-//    }
-
     protected ConfigValue(@NotNull ValueManifest<T> manifest) {
-        super(manifest.metadata, manifest.provider, manifest.defaultSupplier);
+        super(manifest.type, manifest.provider, manifest.path, manifest.defaultSupplier);
     }
 
     /**
@@ -41,7 +37,7 @@ public abstract class ConfigValue<T> extends ValueManifest<T> {
      * @throws NullPointerException 对应数据为空时抛出
      */
     public @NotNull T getNotNull() {
-        return Objects.requireNonNull(getOrDefault(), "Value(" + path() + ") is null.");
+        return Objects.requireNonNull(getOrDefault(), "Value(" + path() + ") [" + type() + "] is null.");
     }
 
     public @NotNull Optional<@Nullable T> optional() {

core/src/main/java/cc/carm/lib/configuration/value/ValueManifest.java

@@ -1,30 +1,56 @@
 package cc.carm.lib.configuration.value;
 
+import cc.carm.lib.configuration.adapter.ValueType;
 import cc.carm.lib.configuration.source.ConfigurationProvider;
-import cc.carm.lib.configuration.source.ConfigurationSource;
-import cc.carm.lib.configuration.value.meta.ValueMetaList;
-import cc.carm.lib.configuration.value.meta.ValueMetaType;
-import org.jetbrains.annotations.Contract;
+import cc.carm.lib.configuration.source.section.ConfigurationSource;
+import cc.carm.lib.configuration.meta.PathMetadata;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
-import java.lang.reflect.Type;
 import java.util.Map;
 import java.util.function.Supplier;
 
 public class ValueManifest<T> {
 
-    protected final @NotNull Map<ValueMetaType<?>, Object> metadata;
+    protected final @NotNull ValueType<T> type;
     protected @Nullable ConfigurationProvider<?> provider;
+    protected @Nullable String path; // Section path
+
     protected @NotNull Supplier<@Nullable T> defaultSupplier;
 
-    public ValueManifest(@NotNull Map<ValueMetaType<?>, Object> metadata,
-                         @Nullable ConfigurationProvider<?> provider, @NotNull Supplier<@Nullable T> defaultSupplier) {
-        this.metadata = metadata;
+    public ValueManifest(ValueType<T> type) {
+        this(type, null, null, () -> null);
+    }
+
+    public ValueManifest(@NotNull T defaultValue) {
+        this(ValueType.of(defaultValue), null, null, () -> defaultValue);
+    }
+
+    public ValueManifest(@NotNull ValueType<T> type, @NotNull Supplier<@Nullable T> defaultSupplier) {
+        this(type, null, null, defaultSupplier);
+    }
+
+    public ValueManifest(@NotNull ValueType<T> type,
+                         @Nullable ConfigurationProvider<?> provider, @Nullable String path,
+                         @NotNull Supplier<@Nullable T> defaultSupplier) {
+        this.type = type;
         this.provider = provider;
+        this.path = path;
         this.defaultSupplier = defaultSupplier;
     }
 
+    public @NotNull ValueType<T> type() {
+        return this.type;
+    }
+
+    public void provider(@NotNull ConfigurationProvider<?> provider) {
+        this.provider = provider;
+    }
+
+    public void path(@NotNull String path) {
+        this.path = path;
+    }
+
     public @Nullable T defaults() {
         return this.defaultSupplier.get();
     }
@@ -37,6 +63,15 @@ public class ValueManifest<T> {
         this.defaultSupplier = defaultValue;
     }
 
+    public boolean hasDefaults() {
+        return this.defaultSupplier.get() != null;
+    }
+
+    public @NotNull String path() {
+        if (path != null) return path;
+        else throw new IllegalStateException("No section path provided.");
+    }
+
     public @NotNull ConfigurationProvider<?> provider() {
         if (this.provider != null) return this.provider;
         throw new IllegalStateException("Value does not have a provider.");
@@ -46,106 +81,16 @@ public class ValueManifest<T> {
         return provider().source();
     }
 
-    public @NotNull String path() {
-        String path = getMeta(ValueMetaList.PATH);
-        if (path != null) return path;
-        else throw new IllegalStateException("No section path provided.");
-    }
-
-    protected Object getValue() {
+    protected Object getData() {
         return config().get(path());
     }
 
-    protected void setValue(@Nullable Object value) {
+    protected void setData(@Nullable Object value) {
         config().set(path(), value);
     }
 
-    public Map<ValueMetaType<?>, Object> metadata() {
-        return metadata;
+    public Map<PathMetadata<?>, Object> metadata() {
+        return provider().metadata(path());
     }
 
-    /**
-     * Get the value of option.
-     *
-     * @param type         {@link ValueMetaType}
-     * @param defaultValue Default value if the value of option is not set.
-     * @param <V>          Value type
-     * @return Value of option
-     */
-    @SuppressWarnings("unchecked")
-    @Contract("_, !null -> !null")
-    public <V> @Nullable V getMeta(@NotNull ValueMetaType<V> type, @Nullable V defaultValue) {
-        return (V) metadata().getOrDefault(type, type.getDefault(this, defaultValue));
-    }
-
-    /**
-     * Get the value of option.
-     *
-     * @param type {@link ValueMetaType}
-     * @param <V>  Value type
-     * @return Value of option
-     */
-    public <V> @Nullable V getMeta(@NotNull ValueMetaType<V> type) {
-        return getMeta(type, null);
-    }
-
-    public boolean hasMeta(@NotNull ValueMetaType<?> type) {
-        return metadata().containsKey(type) || type.hasDefaults(this);
-    }
-
-    /**
-     * Set the value of meta, if the value is null, the meta will be removed.
-     * <br> Will only be changed in current holder.
-     *
-     * @param type  {@link ValueMetaType}
-     * @param value Value of meta
-     * @param <V>   Value type
-     * @return Previous value of meta
-     */
-    @SuppressWarnings("unchecked")
-    public <V> @Nullable V setMeta(@NotNull ValueMetaType<V> type, @Nullable V value) {
-        if (value == null || type.isDefault(this, value)) {
-            return (V) metadata().remove(type);
-        } else {
-            return (V) metadata().put(type, value);
-        }
-    }
-
-    /**
-     * Set the value of meta, if the value is null, the meta will not be changed.
-     * <br> Will only be changed in current holder.
-     *
-     * @param type  {@link ValueMetaType}
-     * @param value Value of meta
-     * @param <V>   Value type
-     */
-    public <V> void setMetaIfAbsent(@NotNull ValueMetaType<V> type, @Nullable V value) {
-        if (value == null || type.isDefault(this, value)) {
-            metadata().remove(type);
-        } else {
-            metadata().putIfAbsent(type, value);
-        }
-    }
-
-    /**
-     * Set the value of meta, if the value is null, the meta will not be changed.
-     * <br> Will only be changed in current holder.
-     *
-     * @param type  {@link ValueMetaType}
-     * @param value Value of meta
-     * @param <V>   Value type
-     */
-    @SuppressWarnings("unchecked")
-    public <V> @Nullable V setMetaIfPresent(@NotNull ValueMetaType<V> type, @Nullable V value) {
-        Object exists = metadata().get(type);
-        if (exists == null) return null;
-
-        if (value == null || type.isDefault(this, value)) {
-            return (V) metadata().remove(type);
-        } else {
-            return (V) metadata().put(type, value);
-        }
-    }
-
-
 }

core/src/main/java/cc/carm/lib/configuration/value/impl/CachedConfigValue.java

@@ -30,13 +30,24 @@ public abstract class CachedConfigValue<T> extends ConfigValue<T> {
     }
 
     protected final T getDefaultFirst(@Nullable T value) {
-        return updateCache(this.defaultSupplier == null ? value : this.defaultSupplier);
+        return updateCache(this.defaults() == null ? value : this.defaults());
     }
 
+    /**
+     * Get the cached value or the default value if the cached value is null
+     *
+     * @return the cached value or the default value
+     */
     protected @Nullable T getCachedOrDefault() {
         return getCachedOrDefault(null);
     }
 
+    /**
+     * Get the cached value or the default value if the cached value is null
+     *
+     * @param emptyValue the value to return if the cached value and the default value are null
+     * @return the cached value or the default value
+     */
     @Contract("!null->!null")
     protected T getCachedOrDefault(@Nullable T emptyValue) {
         if (getCachedValue() != null) return getCachedValue();

core/src/main/java/cc/carm/lib/configuration/value/impl/ConfigValueMap.java

@@ -1,213 +0,0 @@
-//package cc.carm.lib.configuration.value.impl;
-//
-//import cc.carm.lib.configuration.builder.map.ConfigMapCreator;
-//import cc.carm.lib.configuration.function.ConfigDataFunction;
-//import cc.carm.lib.configuration.value.ValueManifest;
-//import org.jetbrains.annotations.NotNull;
-//import org.jetbrains.annotations.Nullable;
-//import org.jetbrains.annotations.Unmodifiable;
-//
-//import java.util.*;
-//import java.util.function.Consumer;
-//import java.util.function.Function;
-//import java.util.function.Supplier;
-//
-//public abstract class ConfigValueMap<K, V, S> extends CachedConfigValue<Map<K, V>> implements Map<K, V> {
-//
-//    public static <K, V> @NotNull ConfigMapCreator<K, V> builderOf(@NotNull Class<K> keyClass,
-//                                                                   @NotNull Class<V> valueClass) {
-//        return builder().asMap(keyClass, valueClass);
-//    }
-//
-//    protected final @NotNull Supplier<? extends Map<K, V>> supplier;
-//
-//    protected final @NotNull Class<? super S> sourceClass;
-//    protected final @NotNull Class<K> keyClass;
-//    protected final @NotNull Class<V> valueClass;
-//
-//    protected final @NotNull ConfigDataFunction<String, K> keyParser;
-//    protected final @NotNull ConfigDataFunction<S, V> valueParser;
-//
-//    protected final @NotNull ConfigDataFunction<K, String> keySerializer;
-//    protected final @NotNull ConfigDataFunction<V, Object> valueSerializer;
-//
-//
-//    protected ConfigValueMap(@NotNull ValueManifest<Map<K, V>> manifest, @NotNull Class<? super S> sourceClass,
-//                             @NotNull Supplier<? extends Map<K, V>> mapObjSupplier,
-//                             @NotNull Class<K> keyClass, @NotNull ConfigDataFunction<String, K> keyParser,
-//                             @NotNull Class<V> valueClass, @NotNull ConfigDataFunction<S, V> valueParser,
-//                             @NotNull ConfigDataFunction<K, String> keySerializer,
-//                             @NotNull ConfigDataFunction<V, Object> valueSerializer) {
-//        super(manifest);
-//        this.supplier = mapObjSupplier;
-//        this.sourceClass = sourceClass;
-//        this.keyClass = keyClass;
-//        this.valueClass = valueClass;
-//        this.keyParser = keyParser;
-//        this.valueParser = valueParser;
-//        this.keySerializer = keySerializer;
-//        this.valueSerializer = valueSerializer;
-//    }
-//
-//    public @NotNull Class<? super S> getSourceClass() {
-//        return sourceClass;
-//    }
-//
-//    public @NotNull Class<K> getKeyClass() {
-//        return keyClass;
-//    }
-//
-//    public @NotNull Class<V> getValueClass() {
-//        return valueClass;
-//    }
-//
-//    public @NotNull ConfigDataFunction<String, K> getKeyParser() {
-//        return keyParser;
-//    }
-//
-//    public @NotNull ConfigDataFunction<S, V> getValueParser() {
-//        return valueParser;
-//    }
-//
-//    public @NotNull ConfigDataFunction<K, String> getKeySerializer() {
-//        return keySerializer;
-//    }
-//
-//    public @NotNull ConfigDataFunction<V, Object> getValueSerializer() {
-//        return valueSerializer;
-//    }
-//
-//    public abstract S getSource(ConfigurationWrapper<?> section, String dataKey);
-//
-//    @Override
-//    public @NotNull Map<K, V> get() {
-//        if (!isExpired()) return getCachedOrDefault(supplier.get());
-//
-//        // 已过时的数据，需要重新解析一次。
-//        Map<K, V> map = supplier.get();
-//
-//        ConfigurationWrapper<?> section = getConfiguration().getConfigurationSection(getConfigPath());
-//        if (section == null) return getDefaultFirst(map);
-//
-//        Set<String> keys = section.getKeys(false);
-//        if (keys.isEmpty()) return getDefaultFirst(map);
-//
-//        for (String dataKey : keys) {
-//            S dataVal = getSource(section, dataKey);
-//            if (dataVal == null) continue;
-//            try {
-//                K key = keyParser.parse(dataKey);
-//                V value = valueParser.parse(dataVal);
-//                map.put(key, value);
-//            } catch (Exception e) {
-//                e.printStackTrace();
-//            }
-//        }
-//
-//        return updateCache(map);
-//    }
-//
-//    @Override
-//    public V get(Object key) {
-//        return get().get(key);
-//    }
-//
-//    public V getNotNull(Object key) {
-//        return Objects.requireNonNull(get(key));
-//    }
-//
-//    @Override
-//    public void set(@Nullable Map<K, V> value) {
-//        updateCache(value);
-//        if (value == null) setValue(null);
-//        else {
-//            Map<String, Object> data = new LinkedHashMap<>();
-//            for (Map.Entry<K, V> entry : value.entrySet()) {
-//                try {
-//                    data.put(
-//                            keySerializer.parse(entry.getKey()),
-//                            valueSerializer.parse(entry.getValue())
-//                    );
-//                } catch (Exception e) {
-//                    e.printStackTrace();
-//                }
-//            }
-//            setValue(data);
-//        }
-//    }
-//
-//    public <T> @NotNull T modifyValue(Function<Map<K, V>, T> function) {
-//        Map<K, V> m = get();
-//        T result = function.apply(m);
-//        set(m);
-//        return result;
-//    }
-//
-//    public @NotNull Map<K, V> modifyMap(Consumer<Map<K, V>> consumer) {
-//        Map<K, V> m = get();
-//        consumer.accept(m);
-//        set(m);
-//        return m;
-//    }
-//
-//    @Override
-//    public int size() {
-//        return get().size();
-//    }
-//
-//    @Override
-//    public boolean isEmpty() {
-//        return get().isEmpty();
-//    }
-//
-//    @Override
-//    public boolean containsKey(Object key) {
-//        return get().containsKey(key);
-//    }
-//
-//    @Override
-//    public boolean containsValue(Object value) {
-//        return get().containsValue(value);
-//    }
-//
-//    @Nullable
-//    @Override
-//    public V put(K key, V value) {
-//        return modifyValue(m -> m.put(key, value));
-//    }
-//
-//    @Override
-//    public V remove(Object key) {
-//        return modifyValue(m -> m.remove(key));
-//    }
-//
-//    @Override
-//    public void putAll(@NotNull Map<? extends K, ? extends V> m) {
-//        modifyMap(map -> map.putAll(m));
-//    }
-//
-//    @Override
-//    public void clear() {
-//        modifyMap(Map::clear);
-//    }
-//
-//    @NotNull
-//    @Override
-//    public Set<K> keySet() {
-//        return get().keySet();
-//    }
-//
-//    @NotNull
-//    @Override
-//    public Collection<V> values() {
-//        return get().values();
-//    }
-//
-//    @NotNull
-//    @Override
-//    @Unmodifiable
-//    public Set<Entry<K, V>> entrySet() {
-//        return get().entrySet();
-//    }
-//
-//}

core/src/main/java/cc/carm/lib/configuration/value/meta/ValueMetaList.java

@@ -1,11 +0,0 @@
-package cc.carm.lib.configuration.value.meta;
-
-public interface ValueMetaList {
-
-    /**
-     * The value path in configuration.
-     * Also see {@link cc.carm.lib.configuration.option.ConfigurationOptions#PATH_SEPARATOR}
-     */
-    ValueMetaType<String> PATH = ValueMetaType.of();
-
-}

core/src/main/java/cc/carm/lib/configuration/value/meta/ValueMetaType.java

@@ -1,59 +0,0 @@
-package cc.carm.lib.configuration.value.meta;
-
-import cc.carm.lib.configuration.value.ValueManifest;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
-import java.util.function.Function;
-import java.util.function.Supplier;
-
-public class ValueMetaType<T> {
-
-    public static <T> ValueMetaType<T> of() {
-        return of(() -> null);
-    }
-
-    public static <T> ValueMetaType<T> of(T defaults) {
-        return of(() -> defaults);
-    }
-
-    public static <T> ValueMetaType<T> of(@NotNull Supplier<@Nullable T> defaults) {
-        return of(v -> defaults.get());
-    }
-
-    public static <T> ValueMetaType<T> of(@NotNull Function<ValueManifest<?>, @Nullable T> defaults) {
-        return new ValueMetaType<>(defaults);
-    }
-
-    protected Function<ValueManifest<?>, @Nullable T> defaultFunction;
-
-    public ValueMetaType(@NotNull Function<ValueManifest<?>, @Nullable T> defaults) {
-        this.defaultFunction = defaults;
-    }
-
-    public boolean isDefault(ValueManifest<?> manifest, @NotNull T value) {
-        return value.equals(defaults(manifest));
-    }
-
-    public boolean hasDefaults(ValueManifest<?> manifest) {
-        return defaults(manifest) != null;
-    }
-
-    public T getDefault(ValueManifest<?> manifest, @Nullable T suppliedValue) {
-        T defaults = defaults(manifest);
-        return defaults == null ? suppliedValue : defaults;
-    }
-
-    public @Nullable T defaults(ValueManifest<?> manifest) {
-        return defaultFunction.apply(manifest);
-    }
-
-    public void setDefaults(Function<ValueManifest<?>, T> defaultFunction) {
-        this.defaultFunction = defaultFunction;
-    }
-
-    public void setDefaults(T value) {
-        setDefaults((v) -> value);
-    }
-
-}

core/src/main/java/cc/carm/lib/configuration/value/standard/ConfiguredList.java

@@ -1,229 +1,231 @@
-//package cc.carm.lib.configuration.value.standard;
-//
-//import cc.carm.lib.configuration.builder.list.ConfigListBuilder;
-//import cc.carm.lib.configuration.function.ConfigDataFunction;
-//import cc.carm.lib.configuration.value.ValueManifest;
-//import cc.carm.lib.configuration.value.impl.CachedConfigValue;
-//import org.jetbrains.annotations.NotNull;
-//import org.jetbrains.annotations.Nullable;
-//
-//import java.util.*;
-//import java.util.function.Consumer;
-//import java.util.function.Function;
-//
-//public class ConfiguredList<V> extends CachedConfigValue<List<V>> implements List<V> {
-//
-//    public static <V> @NotNull ConfigListBuilder<V> builderOf(@NotNull Class<V> valueClass) {
-//        return builder().asList(valueClass);
-//    }
-//
-//    public static <V> @NotNull ConfiguredList<V> of(@NotNull Class<V> valueClass, @NotNull Collection<V> defaults) {
-//        return builderOf(valueClass).fromObject().defaults(defaults).build();
-//    }
-//
-//    @SafeVarargs
-//    public static <V> @NotNull ConfiguredList<V> of(@NotNull Class<V> valueClass, @NotNull V... defaults) {
-//        return builderOf(valueClass).fromObject().defaults(defaults).build();
-//    }
-//
-//    @SafeVarargs
-//    @SuppressWarnings("unchecked")
-//    public static <V> @NotNull ConfiguredList<V> of(@NotNull V defaultValue, @NotNull V... moreDefaults) {
-//        Collection<V> values = new ArrayList<>();
-//        values.add(defaultValue);
-//        values.addAll(Arrays.asList(moreDefaults));
-//        return of((Class<V>) defaultValue.getClass(), values);
-//    }
-//
-//    protected final @NotNull Class<V> valueClass;
-//
-//    protected final @NotNull ConfigDataFunction<Object, V> parser;
-//    protected final @NotNull ConfigDataFunction<V, Object> serializer;
-//
-//    public ConfiguredList(@NotNull ValueManifest<List<V>> manifest, @NotNull Class<V> valueClass,
-//                          @NotNull ConfigDataFunction<Object, V> parser,
-//                          @NotNull ConfigDataFunction<V, Object> serializer) {
-//        super(manifest);
-//        this.valueClass = valueClass;
-//        this.parser = parser;
-//        this.serializer = serializer;
-//    }
-//
-//    @Override
-//    public @NotNull List<V> get() {
-//        if (!isExpired()) return getCachedOrDefault(new ArrayList<>());
-//        // Data that is outdated and needs to be parsed again.
-//        List<V> list = new ArrayList<>();
-//        List<?> data = getConfiguration().contains(getConfigPath()) ?
-//                getConfiguration().getList(getConfigPath()) : null;
-//        if (data == null) return getDefaultFirst(list);
-//        for (Object dataVal : data) {
-//            if (dataVal == null) continue;
-//            try {
-//                list.add(parser.parse(dataVal));
-//            } catch (Exception e) {
-//                e.printStackTrace();
-//            }
-//        }
-//        return updateCache(list);
-//    }
-//
-//    @Override
-//    public V get(int index) {
-//        return get().get(index);
-//    }
-//
-//    public @NotNull List<V> copy() {
-//        return new ArrayList<>(get());
-//    }
-//
-//    public <T> @NotNull T handle(Function<List<V>, T> function) {
-//        List<V> list = get();
-//        T result = function.apply(list);
-//        set(list);
-//        return result;
-//    }
-//
-//    public @NotNull List<V> modify(Consumer<List<V>> consumer) {
-//        List<V> list = get();
-//        consumer.accept(list);
-//        set(list);
-//        return list;
-//    }
-//
-//    @Override
-//    public void set(@Nullable List<V> value) {
-//        updateCache(value);
-//        if (value == null) setValue(null);
-//        else {
-//            List<Object> data = new ArrayList<>();
-//            for (V val : value) {
-//                if (val == null) continue;
-//                try {
-//                    data.add(serializer.parse(val));
-//                } catch (Exception ex) {
-//                    ex.printStackTrace();
-//                }
-//            }
-//            setValue(data);
-//        }
-//    }
-//
-//    @Override
-//    public V set(int index, V element) {
-//        return handle(list -> list.set(index, element));
-//    }
-//
-//    @Override
-//    public int size() {
-//        return get().size();
-//    }
-//
-//    @Override
-//    public boolean isEmpty() {
-//        return get().isEmpty();
-//    }
-//
-//    @Override
-//    public boolean contains(Object o) {
-//        return get().contains(o);
-//    }
-//
-//    @NotNull
-//    @Override
-//    public Iterator<V> iterator() {
-//        return get().iterator();
-//    }
-//
-//    @NotNull
-//    @Override
-//    public Object @NotNull [] toArray() {
-//        return get().toArray();
-//    }
-//
-//    @NotNull
-//    @Override
-//    public <T> T @NotNull [] toArray(@NotNull T[] a) {
-//        return get().toArray(a);
-//    }
-//
-//    @Override
-//    public boolean containsAll(@NotNull Collection<?> c) {
-//        return new HashSet<>(get()).containsAll(c);
-//    }
-//
-//    @Override
-//    public boolean add(V v) {
-//        handle(list -> list.add(v));
-//        return true;
-//    }
-//
-//    @Override
-//    public void add(int index, V element) {
-//        modify(list -> list.add(index, element));
-//    }
-//
-//    @Override
-//    public boolean addAll(@NotNull Collection<? extends V> c) {
-//        return handle(list -> list.addAll(c));
-//    }
-//
-//    @Override
-//    public boolean addAll(int index, @NotNull Collection<? extends V> c) {
-//        return handle(list -> list.addAll(index, c));
-//    }
-//
-//    @Override
-//    public boolean remove(Object o) {
-//        return handle(list -> list.remove(o));
-//    }
-//
-//    @Override
-//    public V remove(int index) {
-//        return handle(list -> list.remove(index));
-//    }
-//
-//    @Override
-//    public boolean removeAll(@NotNull Collection<?> c) {
-//        return handle(list -> list.removeAll(c));
-//    }
-//
-//    @Override
-//    public boolean retainAll(@NotNull Collection<?> c) {
-//        return handle(list -> list.retainAll(c));
-//    }
-//
-//    @Override
-//    public void clear() {
-//        modify(List::clear);
-//    }
-//
-//    @Override
-//    public int indexOf(Object o) {
-//        return get().indexOf(o);
-//    }
-//
-//    @Override
-//    public int lastIndexOf(Object o) {
-//        return get().lastIndexOf(o);
-//    }
-//
-//    @NotNull
-//    @Override
-//    public ListIterator<V> listIterator() {
-//        return get().listIterator();
-//    }
-//
-//    @NotNull
-//    @Override
-//    public ListIterator<V> listIterator(int index) {
-//        return get().listIterator(index);
-//    }
-//
-//    @NotNull
-//    @Override
-//    public List<V> subList(int fromIndex, int toIndex) {
-//        return get().subList(fromIndex, toIndex);
-//    }
-//
-//}
+package cc.carm.lib.configuration.value.standard;
+
+import cc.carm.lib.configuration.adapter.ValueParser;
+import cc.carm.lib.configuration.adapter.ValueSerializer;
+import cc.carm.lib.configuration.adapter.ValueType;
+import cc.carm.lib.configuration.value.ValueManifest;
+import cc.carm.lib.configuration.value.impl.CachedConfigValue;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.*;
+import java.util.function.Consumer;
+import java.util.function.Function;
+
+public class ConfiguredList<V> extends CachedConfigValue<List<V>> implements List<V> {
+
+    protected final @NotNull ValueType<V> valueType;
+    protected final @Nullable ValueParser<V> parser;
+    protected final @Nullable ValueSerializer<V> serializer;
+
+    private ConfiguredList(@NotNull ValueManifest<List<V>> manifest, @NotNull ValueType<V> valueType,
+                           @Nullable ValueParser<V> parser, @Nullable ValueSerializer<V> serializer) {
+        super(manifest);
+        this.valueType = valueType;
+        this.parser = parser;
+        this.serializer = serializer;
+    }
+
+    /**
+     * @return Value's parser, parse base object to value.
+     */
+    public @Nullable ValueParser<V> parser() {
+        return parser;
+    }
+
+    /**
+     * @return Value's serializer, parse value to base object.
+     */
+    public @Nullable ValueSerializer<V> serializer() {
+        return serializer;
+    }
+
+    public @NotNull ValueType<V> valueType() {
+        return valueType;
+    }
+
+    @Override
+    public @NotNull List<V> get() {
+        if (!isExpired()) return getCachedOrDefault(new ArrayList<>());
+        // Data that is outdated and needs to be parsed again.
+        List<V> list = new ArrayList<>();
+        List<?> data = config().contains(path()) ? config().getList(path()) : null;
+        if (data == null) return getDefaultFirst(list);
+
+        ValueParser<V> parser = this.parser;
+        if (parser == null) return getDefaultFirst(list);
+
+        for (Object dataVal : data) {
+            if (dataVal == null) continue;
+            try {
+                list.add(parser.deserialize(provider(), valueType(), dataVal));
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+        return updateCache(list);
+    }
+
+    @Override
+    public void set(@Nullable List<V> value) {
+        updateCache(value);
+        if (value == null) {
+            setData(null);
+            return;
+        }
+
+        ValueSerializer<V> serializer = serializer();
+        if (serializer == null) return;
+        List<Object> data = new ArrayList<>();
+        for (V val : value) {
+            if (val == null) continue;
+            try {
+                data.add(serializer.serialize(provider(), valueType, val));
+            } catch (Exception ex) {
+                ex.printStackTrace();
+            }
+        }
+        setData(data);
+    }
+
+    @Override
+    public V get(int index) {
+        return getNotNull().get(index);
+    }
+
+    public @NotNull List<V> copy() {
+        return new ArrayList<>(getNotNull());
+    }
+
+    public <T> @NotNull T handle(Function<List<V>, T> function) {
+        List<V> list = getNotNull();
+        T result = function.apply(list);
+        set(list);
+        return result;
+    }
+
+    public @NotNull ConfiguredList<V> modify(Consumer<List<V>> consumer) {
+        List<V> list = getNotNull();
+        consumer.accept(list);
+        set(list);
+        return this;
+    }
+
+    @Override
+    public V set(int index, V element) {
+        return handle(list -> list.set(index, element));
+    }
+
+    @Override
+    public int size() {
+        return getNotNull().size();
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return getNotNull().isEmpty();
+    }
+
+    @Override
+    public boolean contains(Object o) {
+        return getNotNull().contains(o);
+    }
+
+    @NotNull
+    @Override
+    public Iterator<V> iterator() {
+        return getNotNull().iterator();
+    }
+
+    @NotNull
+    @Override
+    public Object @NotNull [] toArray() {
+        return getNotNull().toArray();
+    }
+
+    @NotNull
+    @Override
+    public <T> T @NotNull [] toArray(@NotNull T[] a) {
+        return getNotNull().toArray(a);
+    }
+
+    @Override
+    public boolean containsAll(@NotNull Collection<?> c) {
+        return new HashSet<>(getNotNull()).containsAll(c);
+    }
+
+    @Override
+    public boolean add(V v) {
+        handle(list -> list.add(v));
+        return true;
+    }
+
+    @Override
+    public void add(int index, V element) {
+        modify(list -> list.add(index, element));
+    }
+
+    @Override
+    public boolean addAll(@NotNull Collection<? extends V> c) {
+        return handle(list -> list.addAll(c));
+    }
+
+    @Override
+    public boolean addAll(int index, @NotNull Collection<? extends V> c) {
+        return handle(list -> list.addAll(index, c));
+    }
+
+    @Override
+    public boolean remove(Object o) {
+        return handle(list -> list.remove(o));
+    }
+
+    @Override
+    public V remove(int index) {
+        return handle(list -> list.remove(index));
+    }
+
+    @Override
+    public boolean removeAll(@NotNull Collection<?> c) {
+        return handle(list -> list.removeAll(c));
+    }
+
+    @Override
+    public boolean retainAll(@NotNull Collection<?> c) {
+        return handle(list -> list.retainAll(c));
+    }
+
+    @Override
+    public void clear() {
+        modify(List::clear);
+    }
+
+    @Override
+    public int indexOf(Object o) {
+        return getNotNull().indexOf(o);
+    }
+
+    @Override
+    public int lastIndexOf(Object o) {
+        return getNotNull().lastIndexOf(o);
+    }
+
+    @NotNull
+    @Override
+    public ListIterator<V> listIterator() {
+        return getNotNull().listIterator();
+    }
+
+    @NotNull
+    @Override
+    public ListIterator<V> listIterator(int index) {
+        return getNotNull().listIterator(index);
+    }
+
+    @NotNull
+    @Override
+    public List<V> subList(int fromIndex, int toIndex) {
+        return getNotNull().subList(fromIndex, toIndex);
+    }
+
+}

core/src/main/java/cc/carm/lib/configuration/value/standard/ConfiguredMap.java

@@ -1,27 +0,0 @@
-//package cc.carm.lib.configuration.value.standard;
-//
-//import cc.carm.lib.configuration.function.ConfigDataFunction;
-//import cc.carm.lib.configuration.value.ValueManifest;
-//import cc.carm.lib.configuration.value.impl.ConfigValueMap;
-//import org.jetbrains.annotations.NotNull;
-//
-//import java.util.Map;
-//import java.util.function.Supplier;
-//
-//public class ConfiguredMap<K, V> extends ConfigValueMap<K, V, Object> {
-//
-//    public ConfiguredMap(@NotNull ValueManifest<Map<K, V>> manifest,
-//                         @NotNull Supplier<? extends Map<K, V>> mapObjSupplier,
-//                         @NotNull Class<K> keyClass, @NotNull ConfigDataFunction<String, K> keyParser,
-//                         @NotNull Class<V> valueClass, @NotNull ConfigDataFunction<Object, V> valueParser,
-//                         @NotNull ConfigDataFunction<K, String> keySerializer,
-//                         @NotNull ConfigDataFunction<V, Object> valueSerializer) {
-//        super(manifest, Object.class, mapObjSupplier, keyClass, keyParser, valueClass, valueParser, keySerializer, valueSerializer);
-//    }
-//
-//    @Override
-//    public Object getSource(ConfigurationWrapper<?> section, String dataKey) {
-//        return section.get(dataKey);
-//    }
-//
-//}

core/src/main/java/cc/carm/lib/configuration/value/standard/ConfiguredSection.java

@@ -1,96 +0,0 @@
-//package cc.carm.lib.configuration.value.standard;
-//
-//import cc.carm.lib.configuration.builder.value.SectionValueBuilder;
-//import cc.carm.lib.configuration.function.ConfigDataFunction;
-//import cc.carm.lib.configuration.function.ConfigValueParser;
-//import cc.carm.lib.configuration.value.ValueManifest;
-//import cc.carm.lib.configuration.value.impl.CachedConfigValue;
-//import org.jetbrains.annotations.NotNull;
-//import org.jetbrains.annotations.Nullable;
-//
-//import java.util.Map;
-//
-//public class ConfiguredSection<V> extends CachedConfigValue<V> {
-//
-//    public static <V> @NotNull SectionValueBuilder<V> builderOf(@NotNull Class<V> valueClass) {
-//        return builder().asValue(valueClass).fromSection();
-//    }
-//
-//    protected final @NotNull Class<V> valueClass;
-//
-//    protected final @NotNull ConfigValueParser<ConfigurationWrapper<?>, V> parser;
-//    protected final @NotNull ConfigDataFunction<V, ? extends Map<String, Object>> serializer;
-//
-//    public ConfiguredSection(@NotNull ValueManifest<V> manifest, @NotNull Class<V> valueClass,
-//                             @NotNull ConfigValueParser<ConfigurationWrapper<?>, V> parser,
-//                             @NotNull ConfigDataFunction<V, ? extends Map<String, Object>> serializer) {
-//        super(manifest);
-//        this.valueClass = valueClass;
-//        this.parser = parser;
-//        this.serializer = serializer;
-//    }
-//
-//    /**
-//     * @return Value's type class
-//     */
-//    public @NotNull Class<V> getValueClass() {
-//        return valueClass;
-//    }
-//
-//    /**
-//     * @return Value's parser, cast value from section.
-//     */
-//    public @NotNull ConfigValueParser<ConfigurationWrapper<?>, V> getParser() {
-//        return parser;
-//    }
-//
-//    /**
-//     * @return Value's serializer, serialize value to section.
-//     */
-//    public @NotNull ConfigDataFunction<V, ? extends Map<String, Object>> getSerializer() {
-//        return serializer;
-//    }
-//
-//    /**
-//     * @return Get the value that parsed from the configuration section.
-//     */
-//    @Override
-//    public @Nullable V get() {
-//        if (!isExpired()) return getCachedOrDefault();
-//        // Data that is outdated and needs to be parsed again.
-//
-//        ConfigurationWrapper<?> section = getConfiguration().getConfigurationSection(getConfigPath());
-//        if (section == null) return getDefaultValue();
-//
-//        try {
-//            // If there are no errors, update the cache and return.
-//            return updateCache(this.parser.parse(section, this.defaultValue));
-//        } catch (Exception e) {
-//            // There was a parsing error, prompted and returned the default value.
-//            e.printStackTrace();
-//            return getDefaultValue();
-//        }
-//
-//    }
-//
-//    /**
-//     * Use the specified value to update the configuration section.
-//     * Will use {@link #getSerializer()} to serialize the value to section.
-//     *
-//     * @param value The value that needs to be set in the configuration.
-//     */
-//    @Override
-//    public void set(V value) {
-//        updateCache(value);
-//        if (value == null) setValue(null);
-//        else {
-//            try {
-//                setValue(serializer.parse(value));
-//            } catch (Exception e) {
-//                e.printStackTrace();
-//            }
-//        }
-//    }
-//
-//
-//}

core/src/main/java/cc/carm/lib/configuration/value/standard/ConfiguredSectionMap.java

@@ -1,31 +0,0 @@
-//package cc.carm.lib.configuration.value.standard;
-//
-//import cc.carm.lib.configuration.function.ConfigDataFunction;
-//import cc.carm.lib.configuration.value.ValueManifest;
-//import cc.carm.lib.configuration.value.impl.ConfigValueMap;
-//import org.jetbrains.annotations.NotNull;
-//
-//import java.util.Map;
-//import java.util.function.Supplier;
-//
-//public class ConfiguredSectionMap<K, V> extends ConfigValueMap<K, V, ConfigurationWrapper<?>> {
-//
-//    public ConfiguredSectionMap(@NotNull ValueManifest<Map<K, V>> manifest,
-//                                @NotNull Supplier<? extends Map<K, V>> mapObjSupplier,
-//                                @NotNull Class<K> keyClass, @NotNull ConfigDataFunction<String, K> keyParser,
-//                                @NotNull Class<V> valueClass, @NotNull ConfigDataFunction<ConfigurationWrapper<?>, V> valueParser,
-//                                @NotNull ConfigDataFunction<K, String> keySerializer,
-//                                @NotNull ConfigDataFunction<V, ? extends Map<String, Object>> valueSerializer) {
-//        super(
-//                manifest, ConfigurationWrapper.class, mapObjSupplier,
-//                keyClass, keyParser, valueClass, valueParser,
-//                keySerializer, valueSerializer.andThen(s -> (Object) s)
-//        );
-//    }
-//
-//    @Override
-//    public ConfigurationWrapper<?> getSource(ConfigurationWrapper<?> section, String dataKey) {
-//        return section.getConfigurationSection(dataKey);
-//    }
-//
-//}

core/src/main/java/cc/carm/lib/configuration/value/standard/ConfiguredValue.java

@@ -1,62 +1,79 @@
 package cc.carm.lib.configuration.value.standard;
 
-import cc.carm.lib.configuration.function.ConfigDataFunction;
-import cc.carm.lib.configuration.function.ConfigValueParser;
+import cc.carm.lib.configuration.adapter.ValueParser;
+import cc.carm.lib.configuration.adapter.ValueSerializer;
+import cc.carm.lib.configuration.adapter.ValueType;
+import cc.carm.lib.configuration.builder.value.ConfigValueBuilder;
+import cc.carm.lib.configuration.source.ConfigurationProvider;
 import cc.carm.lib.configuration.value.ValueManifest;
 import cc.carm.lib.configuration.value.impl.CachedConfigValue;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.function.Supplier;
 
 public class ConfiguredValue<V> extends CachedConfigValue<V> {
 
-//    public static <V> ConfigValueBuilder<V> builderOf(Class<V> valueClass) {
-//        return builder().asValue(valueClass);
-//    }
-//
-//    @SuppressWarnings("unchecked")
-//    public static <V> ConfiguredValue<V> of(@NotNull V defaultValue) {
-//        return of((Class<V>) defaultValue.getClass(), defaultValue);
-//    }
-//
-//    public static <V> ConfiguredValue<V> of(Class<V> valueClass) {
-//        return of(valueClass, null);
-//    }
-//
-//    public static <V> ConfiguredValue<V> of(Class<V> valueClass, @Nullable V defaultValue) {
-//        return builderOf(valueClass).fromObject().defaults(defaultValue).build();
-//    }
+    public static <V> ConfigValueBuilder<V> builderOf(@NotNull Class<V> type) {
+        return new ConfigValueBuilder<>(ValueType.of(type));
+    }
 
-    protected final @NotNull Class<V> valueClass;
+    public static <V> ConfigValueBuilder<V> builderOf(@NotNull ValueType<V> type) {
+        return new ConfigValueBuilder<>(type);
+    }
 
-    protected final @NotNull ConfigValueParser<Object, V> parser;
-    protected final @NotNull ConfigDataFunction<V, Object> serializer;
+    public static <V> ConfiguredValue<V> of(@NotNull V defaults) {
+        return of(ValueType.of(defaults), () -> defaults);
+    }
 
-    public ConfiguredValue(@NotNull ValueManifest<V> manifest, @NotNull Class<V> valueClass,
-                           @NotNull ConfigValueParser<Object, V> parser,
-                           @NotNull ConfigDataFunction<V, Object> serializer) {
+    public static <V> ConfiguredValue<V> of(@NotNull Class<V> type) {
+        return of(ValueType.of(type), () -> null);
+    }
+
+    public static <V> ConfiguredValue<V> of(@NotNull Class<V> type, @NotNull Supplier<@Nullable V> defaultSupplier) {
+        return of(ValueType.of(type), defaultSupplier);
+    }
+
+    public static <V> ConfiguredValue<V> of(@NotNull ValueType<V> type) {
+        return of(type, () -> null);
+    }
+
+    public static <V> ConfiguredValue<V> of(@NotNull ValueType<V> type, @NotNull Supplier<@Nullable V> defaultSupplier) {
+        return of(
+                new ValueManifest<>(type, defaultSupplier),
+                (provider, t, data) -> provider.deserialize(type, data),
+                (provider, t, value) -> provider.serialize(value)
+        );
+    }
+
+    public static <V> ConfiguredValue<V> of(@NotNull ValueManifest<V> manifest,
+                                            @Nullable ValueParser<V> parser,
+                                            @Nullable ValueSerializer<V> serializer) {
+        return new ConfiguredValue<>(manifest, parser, serializer);
+    }
+
+    protected final @Nullable ValueParser<V> parser;
+    protected final @Nullable ValueSerializer<V> serializer;
+
+    public ConfiguredValue(@NotNull ValueManifest<V> manifest,
+                           @Nullable ValueParser<V> parser,
+                           @Nullable ValueSerializer<V> serializer) {
         super(manifest);
-        this.valueClass = valueClass;
         this.parser = parser;
         this.serializer = serializer;
     }
 
     /**
-     * @return Value's type class
+     * @return Value's parser, parse base object to value.
      */
-    public @NotNull Class<V> getValueClass() {
-        return valueClass;
-    }
-
-    /**
-     * @return Value's parser, cast value from base object.
-     */
-    public @NotNull ConfigValueParser<Object, V> getParser() {
+    public @Nullable ValueParser<V> parser() {
         return parser;
     }
 
     /**
-     * @return Value's serializer, serialize value to base object.
+     * @return Value's serializer, parse value to base object.
      */
-    public @NotNull ConfigDataFunction<V, Object> getSerializer() {
+    public @Nullable ValueSerializer<V> serializer() {
         return serializer;
     }
 
@@ -65,12 +82,15 @@ public class ConfiguredValue<V> extends CachedConfigValue<V> {
         if (!isExpired()) return getCachedOrDefault();
         // Data that is outdated and needs to be parsed again.
 
-        Object value = getValue();
-        if (value == null) return defaults();
+        Object data = getData();
+        if (data == null) return defaults();
+
+        ValueParser<V> parser = parser();
+        if (parser == null) return defaults(); // No parser, return default value.
 
         try {
             // If there are no errors, update the cache and return.
-            return updateCache(this.parser.parse(provider(), value, defaults()));
+            return updateCache(parser.deserialize(provider(), type(), data));
         } catch (Exception e) {
             // There was a parsing error, prompted and returned the default value.
             e.printStackTrace();
@@ -81,21 +101,27 @@ public class ConfiguredValue<V> extends CachedConfigValue<V> {
 
     /**
      * Set the value of the configuration path.
-     * Will use {@link #getSerializer()} to serialize the value.
+     * Will use {@link #serializer()} to serialize the value.
      *
      * @param value The value to be set
      */
     @Override
     public void set(V value) {
-        updateCache(value);
-        if (value == null) setValue(null);
-        else {
+        updateCache(value); // Update cache
+        if (value == null) {
+            setData(null);
+            return;
+        }
+
+        ValueSerializer<V> serializer = serializer();
+        if (serializer == null) return; // No serializer, do nothing.
+
         try {
-                setValue(serializer.parse(value));
+            setData(serializer.serialize(provider(), type(), value));
         } catch (Exception e) {
             e.printStackTrace();
         }
-        }
+
     }
 
 }

core/src/main/old/ValueManifestv.java

@@ -1,123 +0,0 @@
-package cc.carm.lib.configuration.value;
-
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-import org.jetbrains.annotations.Unmodifiable;
-
-import java.util.List;
-import java.util.Optional;
-
-/**
- * ConfigValue Manifests.
- * The basic information that describes a configuration value.
- *
- * @param <T> Value type
- * @author CarmJos
- */
-public class ValueManifest<T> {
-
-    public static <V> ValueManifest<V> of(@Nullable ConfigurationProvider<?> provider, @Nullable String configPath,
-                                          @Nullable List<String> headerComments, @Nullable String inlineComments) {
-        return new ValueManifest<>(provider, configPath, headerComments, inlineComments, null);
-    }
-
-    public static <V> ValueManifest<V> of(@Nullable ConfigurationProvider<?> provider, @Nullable String configPath,
-                                          @Nullable List<String> headerComments, @Nullable String inlineComments,
-                                          @Nullable V defaultValue) {
-        return new ValueManifest<>(provider, configPath, headerComments, inlineComments, defaultValue);
-    }
-
-    protected @Nullable ConfigurationProvider<?> provider;
-    protected @Nullable String configPath;
-
-    protected @Nullable List<String> headerComments;
-    protected @Nullable String inlineComment;
-
-    protected @Nullable T defaultValue;
-
-    /**
-     * @param provider       Provider of config files {@link ConfigurationProvider}
-     * @param configPath     Config path of this value
-     * @param headerComments Header comment contents
-     * @param inlineComment  Inline comment content
-     * @param defaultValue   The default value
-     */
-    public ValueManifest(@Nullable ConfigurationProvider<?> provider, @Nullable String configPath,
-                         @Nullable List<String> headerComments, @Nullable String inlineComment,
-                         @Nullable T defaultValue) {
-        this.provider = provider;
-        this.configPath = configPath;
-        this.headerComments = headerComments;
-        this.inlineComment = inlineComment;
-        this.defaultValue = defaultValue;
-    }
-
-    /**
-     * The initialize method for {@link ConfigInitializer}, which is used to initialize the value.
-     *
-     * @param provider       Provider of config files {@link ConfigurationProvider}
-     * @param configPath     Config path of this value
-     * @param headerComments Header comment contents
-     * @param inlineComment  Inline comment content
-     */
-    protected void initialize(@NotNull ConfigurationProvider<?> provider, @NotNull String configPath,
-                              @Nullable List<String> headerComments, @Nullable String inlineComment) {
-        if (this.provider == null) this.provider = provider;
-        if (this.configPath == null) this.configPath = configPath;
-        if (this.headerComments == null) this.headerComments = headerComments;
-        if (this.inlineComment == null) this.inlineComment = inlineComment;
-
-        if (getHeaderComments() != null) {
-            this.provider.setHeaderComment(getConfigPath(), getHeaderComments());
-        }
-        if (getInlineComment() != null) {
-            this.provider.setInlineComment(getConfigPath(), getInlineComment());
-        }
-    }
-
-    public @Nullable T getDefaultValue() {
-        return this.defaultValue;
-    }
-
-    public void setDefaultValue(@Nullable T defaultValue) {
-        this.defaultValue = defaultValue;
-    }
-
-    public @NotNull ConfigurationProvider<?> getProvider() {
-        return Optional.ofNullable(this.provider)
-                .orElseThrow(() -> new IllegalStateException("Value(" + configPath + ") does not have a provider."));
-    }
-
-    public final @NotNull ConfigurationWrapper<?> getConfiguration() {
-        try {
-            return getProvider().getConfiguration();
-        } catch (Exception ex) {
-            throw new IllegalStateException("Value(" + configPath + ") has not been initialized", ex);
-        }
-    }
-
-    public @NotNull String getConfigPath() {
-        return Optional.ofNullable(this.configPath)
-                .orElseThrow(() -> new IllegalStateException("No section path provided."));
-    }
-
-    protected Object getValue() {
-        String path = getConfigPath(); // 当未指定路径时，优先抛出异常
-        return getConfiguration().get(path);
-    }
-
-    protected void setValue(@Nullable Object value) {
-        getConfiguration().set(getConfigPath(), value);
-    }
-
-    public @Nullable String getInlineComment() {
-        return inlineComment;
-    }
-
-    @Unmodifiable
-    public @Nullable List<String> getHeaderComments() {
-        return headerComments;
-    }
-
-
-}

core/src/main/old/builder/AbstractConfigBuilder.java

@@ -31,12 +31,12 @@ public abstract class AbstractConfigBuilder<T, B extends AbstractConfigBuilder<T
 
     public @NotNull B from(@Nullable P provider) {
         this.provider = provider;
-        return getThis();
+        return self();
     }
 
     public @NotNull B path(@Nullable String path) {
         this.path = path;
-        return getThis();
+        return self();
     }
 
     public @NotNull B comments(@NotNull String... comments) {
@@ -49,17 +49,17 @@ public abstract class AbstractConfigBuilder<T, B extends AbstractConfigBuilder<T
 
     public @NotNull B headerComments(@NotNull List<String> comments) {
         this.headerComments = comments;
-        return getThis();
+        return self();
     }
 
     public @NotNull B inlineComment(@NotNull String comment) {
         this.inlineComment = comment;
-        return getThis();
+        return self();
     }
 
     public @NotNull B defaults(@Nullable T defaultValue) {
         this.defaultValue = defaultValue;
-        return getThis();
+        return self();
     }
 
     public @NotNull B defaults(@NotNull Supplier<@Nullable T> defaultValueSupplier) {

core/src/main/old/builder/ConfigBuilder.java

@@ -1,43 +0,0 @@
-package cc.carm.lib.configuration.builder;
-
-import cc.carm.lib.configuration.builder.map.ConfigMapBuilder;
-import cc.carm.lib.configuration.builder.map.ConfigMapCreator;
-import cc.carm.lib.configuration.builder.list.ConfigListBuilder;
-import cc.carm.lib.configuration.builder.value.ConfigValueBuilder;
-import org.jetbrains.annotations.NotNull;
-
-import java.util.HashMap;
-import java.util.LinkedHashMap;
-import java.util.TreeMap;
-
-public class ConfigBuilder {
-
-    public <V> @NotNull ConfigValueBuilder<V> asValue(@NotNull Class<V> valueClass) {
-        return new ConfigValueBuilder<>(valueClass);
-    }
-
-    public <V> @NotNull ConfigListBuilder<V> asList(@NotNull Class<V> valueClass) {
-        return new ConfigListBuilder<>(valueClass);
-    }
-
-    public <K, V> @NotNull ConfigMapCreator<K, V> asMap(@NotNull Class<K> keyClass,
-                                                        @NotNull Class<V> valueClass) {
-        return new ConfigMapCreator<>(keyClass, valueClass);
-    }
-
-    public <K, V> @NotNull ConfigMapBuilder<HashMap<K, V>, K, V> asHashMap(@NotNull Class<K> keyClass,
-                                                                           @NotNull Class<V> valueClass) {
-        return asMap(keyClass, valueClass).asHashMap();
-    }
-
-    public <K, V> @NotNull ConfigMapBuilder<LinkedHashMap<K, V>, K, V> asLinkedMap(@NotNull Class<K> keyClass,
-                                                                                   @NotNull Class<V> valueClass) {
-        return asMap(keyClass, valueClass).asLinkedMap();
-    }
-
-    public <K extends Comparable<K>, V> @NotNull ConfigMapBuilder<TreeMap<K, V>, K, V> asTreeMap(@NotNull Class<K> keyClass,
-                                                                                                 @NotNull Class<V> valueClass) {
-        return asMap(keyClass, valueClass).asTreeMap();
-    }
-
-}

core/src/main/old/builder/value/SectionValueBuilder.java

@@ -3,7 +3,6 @@ package cc.carm.lib.configuration.builder.value;
 import cc.carm.lib.configuration.builder.CommonConfigBuilder;
 import cc.carm.lib.configuration.function.ConfigDataFunction;
 import cc.carm.lib.configuration.function.ConfigValueParser;
-import cc.carm.lib.configuration.value.standard.ConfiguredSection;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.Map;

core/src/test/java/AdaptTest.java

@@ -1,14 +1,18 @@
 import cc.carm.lib.configuration.adapter.ValueAdapterRegistry;
-import cc.carm.lib.configuration.adapter.strandard.EnumAdapter;
+import cc.carm.lib.configuration.adapter.ValueType;
 import cc.carm.lib.configuration.adapter.strandard.PrimitiveAdapters;
 import cc.carm.lib.configuration.source.ConfigurationProvider;
-import cc.carm.lib.configuration.loader.ConfigurationLoader;
-import cc.carm.lib.easyoptions.OptionHolder;
+import cc.carm.lib.configuration.source.loader.ConfigurationLoader;
+import cc.carm.lib.configuration.source.option.ConfigurationOptionHolder;
+import cc.carm.lib.configuration.value.standard.ConfiguredValue;
 import cc.carm.test.config.TestSource;
 import org.junit.Test;
 
 import java.time.Duration;
+import java.time.LocalDate;
 import java.time.LocalTime;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 
 public class AdaptTest {
 
@@ -16,42 +20,29 @@ public class AdaptTest {
     public void test() throws Exception {
 
         ValueAdapterRegistry registry = new ValueAdapterRegistry();
-        registry.register(Long.class, PrimitiveAdapters.ofLong());
-        registry.register(long.class, PrimitiveAdapters.ofLong());
-        registry.register(Integer.class, PrimitiveAdapters.ofInteger());
-        registry.register(int.class, PrimitiveAdapters.ofInteger());
-        registry.register(Double.class, PrimitiveAdapters.ofDouble());
-        registry.register(double.class, PrimitiveAdapters.ofDouble());
-        registry.register(Float.class, PrimitiveAdapters.ofFloat());
-        registry.register(float.class, PrimitiveAdapters.ofFloat());
-        registry.register(Short.class, PrimitiveAdapters.ofShort());
-        registry.register(short.class, PrimitiveAdapters.ofShort());
-        registry.register(Byte.class, PrimitiveAdapters.ofByte());
-        registry.register(byte.class, PrimitiveAdapters.ofByte());
-        registry.register(Character.class, PrimitiveAdapters.ofCharacter());
-        registry.register(char.class, PrimitiveAdapters.ofCharacter());
-        registry.register(Boolean.class, PrimitiveAdapters.ofBoolean());
-        registry.register(boolean.class, PrimitiveAdapters.ofBoolean());
-        registry.register(String.class, PrimitiveAdapters.ofString());
-        registry.register(new EnumAdapter());
+        registry.register(PrimitiveAdapters.ADAPTERS);
+        registry.register(PrimitiveAdapters.ofEnum());
 
-        registry.register(Long.class, Duration.class, Duration::ofSeconds, Duration::getSeconds);
+
+        registry.register(ValueType.of(Long.class), ValueType.of(Duration.class), Duration::ofMillis, Duration::toMillis);
         registry.register(
-                Duration.class, LocalTime.class,
+                ValueType.of(Duration.class), ValueType.of(LocalTime.class),
                 duration -> LocalTime.now().plus(duration),
                 data -> Duration.between(LocalTime.now(), data)
         );
 
-        ConfigurationProvider<TestSource> provider = new ConfigurationProvider<>(new TestSource(), new ConfigurationLoader(), registry, new OptionHolder());
+        ConfigurationProvider<TestSource> provider = new ConfigurationProvider<>(
+                new TestSource(), new ConfigurationLoader(),
+                registry, new ConfigurationOptionHolder(), new ConcurrentHashMap<>()
+        );
 
-        LocalTime v = registry.deserialize(provider, LocalTime.class, "600");
+        LocalTime v = registry.deserialize(provider, LocalTime.class, 600000L);
         Object d = registry.serialize(provider, v);
 
         System.out.println(v);
         System.out.println(d);
-        System.out.println(registry.deserialize(provider, TestEnum.class, "b"));
+        System.out.println(registry.deserialize(provider, TestEnum.class, "C"));
         System.out.println(registry.serialize(provider, TestEnum.C).getClass());
-
     }
 
     enum TestEnum {

core/src/test/java/NameTest.java

@@ -1,4 +1,4 @@
-import cc.carm.lib.configuration.loader.PathGenerator;
+import cc.carm.lib.configuration.source.loader.PathGenerator;
 import org.junit.Test;
 
 public class NameTest {

core/src/test/java/cc/carm/test/config/LoaderTest.java

@@ -4,15 +4,17 @@ import cc.carm.lib.configuration.adapter.ValueAdapterRegistry;
 import cc.carm.lib.configuration.annotation.ConfigPath;
 import cc.carm.lib.configuration.Configuration;
 import cc.carm.lib.configuration.source.ConfigurationProvider;
-import cc.carm.lib.configuration.loader.ConfigurationLoader;
-import cc.carm.lib.easyoptions.OptionHolder;
+import cc.carm.lib.configuration.source.loader.ConfigurationLoader;
+import cc.carm.lib.configuration.source.option.ConfigurationOptionHolder;
 import org.junit.Test;
 
+import java.util.concurrent.ConcurrentHashMap;
+
 public class LoaderTest {
 
     @Test
     public void test() throws Exception {
-        ConfigurationProvider<TestSource> provider = new ConfigurationProvider<>(new TestSource(), new ConfigurationLoader(), new ValueAdapterRegistry(), new OptionHolder());
+        ConfigurationProvider<TestSource> provider = new ConfigurationProvider<>(new TestSource(), new ConfigurationLoader(), new ValueAdapterRegistry(), new ConfigurationOptionHolder(), new ConcurrentHashMap<>());
 
         ConfigurationLoader loader = new ConfigurationLoader();
         loader.load(provider, ROOT.class);

core/src/test/java/cc/carm/test/config/TestSource.java

@@ -1,7 +1,7 @@
 package cc.carm.test.config;
 
-import cc.carm.lib.configuration.source.ConfigurationSection;
-import cc.carm.lib.configuration.source.ConfigurationSource;
+import cc.carm.lib.configuration.source.section.ConfigurationSection;
+import cc.carm.lib.configuration.source.section.ConfigurationSource;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -16,7 +16,7 @@ public class TestSource extends ConfigurationSource<TestSource, Map<String, Stri
     }
 
     @Override
-    protected TestSource getThis() {
+    protected TestSource self() {
         return this;
     }
 

features/commentable/src/main/java/cc/carm/lib/configuration/commentable/CommentableMetaTypes.java

@@ -2,7 +2,7 @@ package cc.carm.lib.configuration.commentable;
 
 import cc.carm.lib.configuration.annotation.HeaderComment;
 import cc.carm.lib.configuration.annotation.InlineComment;
-import cc.carm.lib.configuration.value.meta.ValueMetaType;
+import cc.carm.lib.configuration.meta.PathMetadata;
 
 import java.util.Collections;
 import java.util.List;
@@ -12,11 +12,11 @@ public interface CommentableMetaTypes {
     /**
      * Configuration's {@link HeaderComment}
      */
-    ValueMetaType<List<String>> HEADER_COMMENTS = ValueMetaType.of(Collections.emptyList());
+    PathMetadata<List<String>> HEADER_COMMENTS = PathMetadata.of(Collections.emptyList());
 
     /**
      * Configuration's {@link InlineComment}
      */
-    ValueMetaType<String> INLINE_COMMENT_VALUE = ValueMetaType.of();
+    PathMetadata<String> INLINE_COMMENT_VALUE = PathMetadata.of();
 
 }

features/commentable/src/main/java/cc/carm/lib/configuration/option/CommentableOptions.java

@@ -1,6 +1,6 @@
 package cc.carm.lib.configuration.option;
 
-import cc.carm.lib.easyoptions.OptionType;
+import cc.carm.lib.configuration.source.option.ConfigurationOption;
 
 public interface CommentableOptions {
 
@@ -8,7 +8,7 @@ public interface CommentableOptions {
      * Whether to keep modified comments in configuration,
      * that means we only set comments for values that are not exists in configuration.
      */
-    OptionType<Boolean> KEEP_COMMENTS = OptionType.of(true);
+    ConfigurationOption<Boolean> KEEP_COMMENTS = ConfigurationOption.of(true);
 
     /**
      * Whether to comment values name that are not exists in configuration and no default value offered.
@@ -19,6 +19,6 @@ public interface CommentableOptions {
      * # foo:
      * </pre></blockquote>
      */
-    OptionType<Boolean> COMMENT_NO_DEFAULT = OptionType.of(true);
+    ConfigurationOption<Boolean> COMMENT_NO_DEFAULT = ConfigurationOption.of(true);
 
 }

features/file/src/main/java/cc/carm/lib/configuration/option/FileConfigOptions.java

@@ -1,15 +1,12 @@
 package cc.carm.lib.configuration.option;
 
-import cc.carm.lib.easyoptions.OptionType;
-
-import static cc.carm.lib.easyoptions.OptionType.of;
+import cc.carm.lib.configuration.source.option.ConfigurationOption;
 
 public class FileConfigOptions {
 
     /**
      * Whether to copy files from resource if exists.
      */
-    OptionType<Boolean> COPY_DEFAULTS = of(true);
-
+    ConfigurationOption<Boolean> COPY_DEFAULTS = ConfigurationOption.of(true);
 
 }

features/file/src/main/java/cc/carm/lib/configuration/source/FileProvider.java

@@ -0,0 +1,21 @@
+package cc.carm.lib.configuration.source;
+
+import cc.carm.lib.configuration.adapter.ValueAdapterRegistry;
+import cc.carm.lib.configuration.meta.PathMetadata;
+import cc.carm.lib.configuration.source.loader.ConfigurationLoader;
+import cc.carm.lib.configuration.source.option.ConfigurationOptionHolder;
+import cc.carm.lib.configuration.source.section.ConfigurationSource;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Map;
+
+public abstract class FileProvider<S extends ConfigurationSource<S, ?>> extends ConfigurationProvider<S> {
+
+    public FileProvider(@NotNull S source, @NotNull ConfigurationLoader loader,
+                        @NotNull ValueAdapterRegistry adapters, @NotNull ConfigurationOptionHolder options,
+                        @NotNull Map<String, Map<PathMetadata<?>, Object>> pathMetadata) {
+        super(source, loader, adapters, options, pathMetadata);
+    }
+
+
+}

pom.xml

@@ -23,7 +23,7 @@
 
         <!--        <module>demo</module>-->
 <!--        <module>providers/yaml</module>-->
-<!--        <module>providers/gson</module>-->
+        <module>providers/gson</module>
 <!--        <module>providers/sql</module>-->
 <!--        <module>providers/hocon</module>-->
     </modules>

providers/gson/pom.xml

@@ -27,6 +27,13 @@
             <scope>compile</scope>
         </dependency>
 
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
+            <artifactId>easyconfiguration-feature-file</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>compile</scope>
+        </dependency>
+
         <dependency>
             <groupId>${project.parent.groupId}</groupId>
             <artifactId>easyconfiguration-demo</artifactId>

providers/yaml/src/main/java/cc/carm/lib/configuration/yaml/YAMLConfigSource.java

@@ -0,0 +1,4 @@
+package cc.carm.lib.configuration.yaml;
+
+public class YAMLConfigSource {
+}