Add @Contract annotations

Author: Kiber2009

src/main/java/io/github/kiber2009/plugin/contentapi/api/recipe/CustomRecipe.java

@@ -1,8 +1,10 @@
 package io.github.kiber2009.plugin.contentapi.api.recipe;
 
 import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.Contract;
 import org.jspecify.annotations.NonNull;
 
 public interface CustomRecipe {
+    @Contract(pure = true)
     @NonNull ItemStack getResult();
 }

src/main/java/io/github/kiber2009/plugin/contentapi/api/recipe/crafting/CustomShapedCraftingRecipe.java

@@ -2,6 +2,7 @@
 
 import io.github.kiber2009.plugin.contentapi.api.recipe.CustomCraftingRecipe;
 import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.Contract;
 import org.jspecify.annotations.NonNull;
 import org.jspecify.annotations.Nullable;
 
@@ -22,11 +23,13 @@ public CustomShapedCraftingRecipe(final @NonNull Predicate<@Nullable ItemStack>
     }
 
     @Override
+    @Contract(pure = true)
     public @NonNull ItemStack getResult() {
         return result.clone();
     }
 
     @Override
+    @Contract(pure = true)
     public boolean test(final @Nullable ItemStack @NonNull [] matrix) {
         if (matrix.length == 4 && this.matrix.length == 9)
             return false;

src/main/java/io/github/kiber2009/plugin/contentapi/api/recipe/crafting/CustomShapelessCraftingRecipe.java

@@ -2,6 +2,7 @@
 
 import io.github.kiber2009.plugin.contentapi.api.recipe.CustomCraftingRecipe;
 import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.Contract;
 import org.jspecify.annotations.NonNull;
 import org.jspecify.annotations.Nullable;
 
@@ -21,11 +22,13 @@ public CustomShapelessCraftingRecipe(final @NonNull ItemStack result,
     }
 
     @Override
+    @Contract(pure = true)
     public @NonNull ItemStack getResult() {
         return result.clone();
     }
 
     @Override
+    @Contract(pure = true)
     public boolean test(final @Nullable ItemStack @NonNull [] matrix) {
         if (matrix.length < ingredients.length)
             return false;

src/main/java/io/github/kiber2009/plugin/contentapi/registry/recipe/CraftingRecipeGlobalRegistry.java

@@ -2,13 +2,15 @@
 
 import io.github.kiber2009.plugin.contentapi.api.recipe.CustomCraftingRecipe;
 import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.Contract;
 import org.jspecify.annotations.NonNull;
 import org.jspecify.annotations.Nullable;
 
 public final class CraftingRecipeGlobalRegistry extends RecipeGlobalRegistry<CustomCraftingRecipe> {
     CraftingRecipeGlobalRegistry() {
     }
 
+    @Contract(pure = true)
     public @Nullable CustomCraftingRecipe get(final @Nullable ItemStack @NonNull [] matrix) {
         for (final CustomCraftingRecipe recipe : map.values())
             if (recipe.test(matrix))