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+/*
+ * Copyright © 2009 Reinier Zwitserloot and Roel Spilker.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package lombok;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Generates an implementation for the {@code toString} method inherited by all objects.
+ * <p>
+ * If the method already exists, then {@code ToString} will not generate any method, and instead warns
+ * that it's doing nothing at all. The parameter list and return type are not relevant when deciding to skip generation of
+ * the method; any method named {@code toString} will make {@code ToString} not generate anything.
+ * <p>
+ * By default, all fields that are non-static are used in the toString generation. You can exclude fields by specifying them
+ * in the {@code exclude} parameter. You can also explicitly specify the fields that
+ * are to be used by specifying them in the {@code of} parameter.
+ * <p>
+ * Array fields are handled by way of {@link java.util.Arrays#deepToString(Object[])} where necessary.
+ * The downside is that arrays with circular references (arrays that contain themselves,
+ * possibly indirectly) results in calls to {@code toString} throwing a
+ * {@link java.lang.StackOverflowError}. However, the implementations for java's own {@link java.util.ArrayList} suffer
+ * from the same flaw.
+ * <p>
+ * The {@code toString} method that is generated will print the class name as well as each field (both the name
+ * and the value). You can optionally choose to suppress the printing of the field name, by setting the
+ * {@code includeFieldNames} flag to <em>false</em>.
+ * <p>
+ * You can also choose to include the result of {@code toString} in your class's superclass by setting the
+ * {@code callSuper} to <em>true</em>.
+ */
+@Target(ElementType.TYPE)
+@Retention(RetentionPolicy.SOURCE)
+public @interface ToString {
+ /**
+ * Include the name of each field when printing it.
+ * <strong>default: true</strong>
+ */
+ boolean includeFieldNames() default true;
+
+ /**
+ * Any fields listed here will not be printed in the generated {@code toString} implementation.
+ * Mutually exclusive with {@link #of()}.
+ */
+ String[] exclude() default {};
+
+ /**
+ * If present, explicitly lists the fields that are to be printed.
+ * Normally, all non-static fields are printed.
+ * <p>
+ * Mutually exclusive with {@link #exclude()}.
+ */
+ String[] of() default {};
+
+ /**
+ * Include the result of the superclass's implementation of {@code toString} in the output.
+ * <strong>default: false</strong>
+ */
+ boolean callSuper() default false;
+}