backport config annotations

src/main/java/com/falsepattern/lib/config/Config.java

@@ -0,0 +1,88 @@
+package com.falsepattern.lib.config;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.TYPE)
+public @interface Config {
+    /**
+     * The mod id that this configuration is associated with.
+     */
+    String modid();
+
+    /**
+     * A user friendly name for the config file,
+     * the default will be modid
+     */
+    String name() default "";
+
+    /**
+     * Root element category, defaults to "general", if this is an empty string then the root category is disabled.
+     * Any primitive fields will cause an error, and you must specify sub-category objects
+     */
+    String category() default "general";
+
+    public static enum Type {
+        /**
+         * Loaded once, directly after mod construction. Before pre-init.
+         * This class must have static fields.
+         */
+        INSTANCE(true);
+
+
+        private boolean isStatic = true;
+
+        private Type(boolean isStatic) {this.isStatic = isStatic;}
+
+        public boolean isStatic() {return this.isStatic;}
+    }
+
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target({ElementType.FIELD, ElementType.TYPE})
+    @interface LangKey {
+        String value();
+    }
+
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target(ElementType.FIELD)
+    @interface Comment {
+        String[] value();
+    }
+
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target(ElementType.FIELD)
+    @interface Ignore {}
+
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target(ElementType.FIELD)
+    @interface RangeInt {
+        int min() default Integer.MIN_VALUE;
+
+        int max() default Integer.MAX_VALUE;
+    }
+
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target(ElementType.FIELD)
+    @interface RangeDouble {
+        double min() default Double.MIN_VALUE;
+
+        double max() default Double.MAX_VALUE;
+    }
+
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target(ElementType.FIELD)
+    @interface Name {
+        String value();
+    }
+
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target({ElementType.FIELD, ElementType.TYPE})
+    @interface RequiresMcRestart {}
+
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target({ElementType.FIELD, ElementType.TYPE})
+    @interface RequiresWorldRestart {}
+}