SCRIPT Move java files

commandsv3/src/main/java/org/wpilib/command3/BindingScope.java

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+// Copyright (c) FIRST and other WPILib contributors.
+// Open Source Software; you can modify and/or share it under the terms of
+// the WPILib BSD license file in the root directory of this project.
+
+package org.wpilib.commands3;
+
+/**
+ * A scope for when a binding is live. Bindings tied to a scope must be deleted when the scope
+ * becomes inactive.
+ */
+@SuppressWarnings("PMD.ImplicitFunctionalInterface")
+interface BindingScope {
+  /**
+   * Checks if the scope is active. Bindings for inactive scopes are removed from the scheduler.
+   *
+   * @return True if the scope is still active, false if not.
+   */
+  boolean active();
+
+  static BindingScope global() {
+    return Global.INSTANCE;
+  }
+
+  static BindingScope forCommand(Scheduler scheduler, Command command) {
+    return new ForCommand(scheduler, command);
+  }
+
+  /** A global binding scope. Bindings in this scope are always active. */
+  final class Global implements BindingScope {
+    // No reason not to be a singleton.
+    public static final Global INSTANCE = new Global();
+
+    @Override
+    public boolean active() {
+      return true;
+    }
+  }
+
+  /**
+   * A binding scoped to the lifetime of a specific command. This should be used when a binding is
+   * created within a command, tying the lifetime of the binding to the declaring command.
+   *
+   * @param scheduler The scheduler managing the command.
+   * @param command The command being scoped to.
+   */
+  record ForCommand(Scheduler scheduler, Command command) implements BindingScope {
+    @Override
+    public boolean active() {
+      return scheduler.isRunning(command);
+    }
+  }
+}