Add Bind#assignLazyInstance

Author: P3ridot

di/src/main/java/org/panda_lang/utilities/inject/Bind.java

@@ -46,6 +46,13 @@ public interface Bind<A extends Annotation> extends Comparable<Bind<A>> {
      */
     void assignThrowingInstance(ThrowingSupplier<?, ? extends Exception> valueSupplier);
 
+    /**
+     * Assign lazy instance to the bind, that will be initialized on the first call and cached
+     *
+     * @param valueSupplier the supplier to assign
+     */
+    void assignLazyInstance(Supplier<?> valueSupplier);
+
     /**
      * Assign custom handler to the bind
      *

di/src/main/java/org/panda_lang/utilities/inject/DefaultBind.java

@@ -16,6 +16,7 @@
 
 package org.panda_lang.utilities.inject;
 
+import panda.std.Lazy;
 import panda.std.function.ThrowingSupplier;
 import panda.std.function.ThrowingTriFunction;
 import panda.std.function.TriFunction;
@@ -61,6 +62,11 @@ public void assignThrowingInstance(ThrowingSupplier<?, ? extends Exception> valu
         with(new StaticBindValue<>(valueSupplier));
     }
 
+    @Override
+    public void assignLazyInstance(Supplier<?> valueSupplier) {
+        assignInstance(new Lazy<>(valueSupplier));
+    }
+
     @Override
     public void assignHandler(TriFunction<Property, A, Object[], ?> handler) {
         with(new HandledBindValue<>(handler));