feature: add Scope[] operator

library/scene_ktx/src/main/java/com/bytedance/scene/ktx/ScopeExtensions.kt

@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2019 ByteDance Inc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.bytedance.scene.ktx
+
+import com.bytedance.scene.Scope
+
+inline operator fun <reified T> Scope.get(key: Any): T {
+    return getService<T>(key) as T
+}
+
+operator fun Scope.set(key: Any, value: Any) {
+    register(key, value)
+}

library/scene_ktx/src/test/java/com/bytedance/scene/ktx/ScopeExtensionsTests.kt

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+package com.bytedance.scene.ktx
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.FrameLayout
+import com.bytedance.scene.Scene
+import com.bytedance.scene.State
+import com.bytedance.scene.group.GroupScene
+import com.bytedance.scene.utlity.ViewIdGenerator
+import org.junit.Assert
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.annotation.Config
+
+
+@RunWith(RobolectricTestRunner::class)
+@Config(manifest = Config.NONE)
+class ScopeExtensionsTests {
+    class TestGroupScene : GroupScene() {
+        val mId: Int = ViewIdGenerator.generateViewId()
+
+        override fun onCreateView(inflater: LayoutInflater, container: ViewGroup, savedInstanceState: Bundle?): ViewGroup {
+            return FrameLayout(requireSceneContext())
+        }
+
+        override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+            super.onViewCreated(view, savedInstanceState)
+            view.id = mId
+        }
+    }
+
+    class TestChildScene : Scene() {
+        override fun onCreateView(inflater: LayoutInflater, container: ViewGroup, savedInstanceState: Bundle?): View {
+            return View(requireSceneContext())
+        }
+    }
+
+    @Test
+    fun test() {
+        val groupScene = TestGroupScene()
+        createFromSceneLifecycleManager(groupScene)
+
+        groupScene.scope["test"] = "Value"
+        val childScene = TestChildScene()
+        groupScene.add(groupScene.mId, childScene, "Test")
+
+        val value: String = childScene.scope["test"]
+        Assert.assertEquals("Value", value)
+        Assert.assertNull(childScene.scope["test_not_exists"])
+    }
+}