eaglercraft-1.8/sources/main/java/org/apache/commons/lang3/Validate.java

1621 lines
58 KiB
Java

/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.commons.lang3;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import java.util.regex.Pattern;
import net.lax1dude.eaglercraft.v1_8.HString;
import net.lax1dude.eaglercraft.v1_8.JDKBackports;
/**
* <p>
* This class assists in validating arguments. The validation methods are based
* along the following principles:
* <ul>
* <li>An invalid {@code null} argument causes a
* {@link NullPointerException}.</li>
* <li>A non-{@code null} argument causes an
* {@link IllegalArgumentException}.</li>
* <li>An invalid index into an array/collection/map/string causes an
* {@link IndexOutOfBoundsException}.</li>
* </ul>
*
* <p>
* All exceptions messages are <a href=
* "http://docs.oracle.com/javase/1.5.0/docs/api/java/util/Formatter.html#syntax">format
* strings</a> as defined by the Java platform. For example:
* </p>
*
* <pre>
* Validate.isTrue(i &gt; 0, "The value must be greater than zero: %d", i);
* Validate.notNull(surname, "The surname must not be %s", null);
* </pre>
*
* <p>
* #ThreadSafe#
* </p>
*
* @see java.lang.String#format(String, Object...)
* @since 2.0
*/
public class Validate {
private static final String DEFAULT_NOT_NAN_EX_MESSAGE = "The validated value is not a number";
private static final String DEFAULT_FINITE_EX_MESSAGE = "The value is invalid: %f";
private static final String DEFAULT_EXCLUSIVE_BETWEEN_EX_MESSAGE = "The value %s is not in the specified exclusive range of %s to %s";
private static final String DEFAULT_INCLUSIVE_BETWEEN_EX_MESSAGE = "The value %s is not in the specified inclusive range of %s to %s";
private static final String DEFAULT_MATCHES_PATTERN_EX = "The string %s does not match the pattern %s";
private static final String DEFAULT_IS_NULL_EX_MESSAGE = "The validated object is null";
private static final String DEFAULT_IS_TRUE_EX_MESSAGE = "The validated expression is false";
private static final String DEFAULT_NO_NULL_ELEMENTS_ARRAY_EX_MESSAGE = "The validated array contains null element at index: %d";
private static final String DEFAULT_NO_NULL_ELEMENTS_COLLECTION_EX_MESSAGE = "The validated collection contains null element at index: %d";
private static final String DEFAULT_NOT_BLANK_EX_MESSAGE = "The validated character sequence is blank";
private static final String DEFAULT_NOT_EMPTY_ARRAY_EX_MESSAGE = "The validated array is empty";
private static final String DEFAULT_NOT_EMPTY_CHAR_SEQUENCE_EX_MESSAGE = "The validated character sequence is empty";
private static final String DEFAULT_NOT_EMPTY_COLLECTION_EX_MESSAGE = "The validated collection is empty";
private static final String DEFAULT_NOT_EMPTY_MAP_EX_MESSAGE = "The validated map is empty";
private static final String DEFAULT_VALID_INDEX_ARRAY_EX_MESSAGE = "The validated array index is invalid: %d";
private static final String DEFAULT_VALID_INDEX_CHAR_SEQUENCE_EX_MESSAGE = "The validated character sequence index is invalid: %d";
private static final String DEFAULT_VALID_INDEX_COLLECTION_EX_MESSAGE = "The validated collection index is invalid: %d";
private static final String DEFAULT_VALID_STATE_EX_MESSAGE = "The validated state is false";
private static final String DEFAULT_IS_ASSIGNABLE_EX_MESSAGE = "Cannot assign a %s to a %s";
private static final String DEFAULT_IS_INSTANCE_OF_EX_MESSAGE = "Expected type: %s, actual: %s";
/**
* Constructor. This class should not normally be instantiated.
*/
public Validate() {
}
// isTrue
// ---------------------------------------------------------------------------------
/**
* <p>
* Validate that the argument condition is {@code true}; otherwise throwing an
* exception with the specified message. This method is useful when validating
* according to an arbitrary boolean expression, such as validating a primitive
* number or using your own custom validation expression.
* </p>
*
* <pre>
* Validate.isTrue(i &gt; 0.0, "The value must be greater than zero: &#37;d", i);
* </pre>
*
* <p>
* For performance reasons, the long value is passed as a separate parameter and
* appended to the exception message only in the case of an error.
* </p>
*
* @param expression the boolean expression to check
* @param message the {@link String#format(String, Object...)} exception
* message if invalid, not null
* @param value the value to append to the message when invalid
* @throws IllegalArgumentException if expression is {@code false}
* @see #isTrue(boolean)
* @see #isTrue(boolean, String, double)
* @see #isTrue(boolean, String, Object...)
*/
public static void isTrue(final boolean expression, final String message, final long value) {
if (!expression) {
throw new IllegalArgumentException(HString.format(message, Long.valueOf(value)));
}
}
/**
* <p>
* Validate that the argument condition is {@code true}; otherwise throwing an
* exception with the specified message. This method is useful when validating
* according to an arbitrary boolean expression, such as validating a primitive
* number or using your own custom validation expression.
* </p>
*
* <pre>
* Validate.isTrue(d &gt; 0.0, "The value must be greater than zero: &#37;s", d);
* </pre>
*
* <p>
* For performance reasons, the double value is passed as a separate parameter
* and appended to the exception message only in the case of an error.
* </p>
*
* @param expression the boolean expression to check
* @param message the {@link String#format(String, Object...)} exception
* message if invalid, not null
* @param value the value to append to the message when invalid
* @throws IllegalArgumentException if expression is {@code false}
* @see #isTrue(boolean)
* @see #isTrue(boolean, String, long)
* @see #isTrue(boolean, String, Object...)
*/
public static void isTrue(final boolean expression, final String message, final double value) {
if (!expression) {
throw new IllegalArgumentException(HString.format(message, Double.valueOf(value)));
}
}
/**
* <p>
* Validate that the argument condition is {@code true}; otherwise throwing an
* exception with the specified message. This method is useful when validating
* according to an arbitrary boolean expression, such as validating a primitive
* number or using your own custom validation expression.
* </p>
*
* <pre>
* Validate.isTrue(i &gt;= min &amp;&amp; i &lt;= max, "The value must be between &#37;d and &#37;d", min, max);
* Validate.isTrue(myObject.isOk(), "The object is not okay");
* </pre>
*
* @param expression the boolean expression to check
* @param message the {@link String#format(String, Object...)} exception
* message if invalid, not null
* @param values the optional values for the formatted exception message,
* null array not recommended
* @throws IllegalArgumentException if expression is {@code false}
* @see #isTrue(boolean)
* @see #isTrue(boolean, String, long)
* @see #isTrue(boolean, String, double)
*/
public static void isTrue(final boolean expression, final String message, final Object... values) {
if (!expression) {
throw new IllegalArgumentException(HString.format(message, values));
}
}
/**
* <p>
* Validate that the argument condition is {@code true}; otherwise throwing an
* exception. This method is useful when validating according to an arbitrary
* boolean expression, such as validating a primitive number or using your own
* custom validation expression.
* </p>
*
* <pre>
* Validate.isTrue(i &gt; 0);
* Validate.isTrue(myObject.isOk());
* </pre>
*
* <p>
* The message of the exception is &quot;The validated expression is
* false&quot;.
* </p>
*
* @param expression the boolean expression to check
* @throws IllegalArgumentException if expression is {@code false}
* @see #isTrue(boolean, String, long)
* @see #isTrue(boolean, String, double)
* @see #isTrue(boolean, String, Object...)
*/
public static void isTrue(final boolean expression) {
if (!expression) {
throw new IllegalArgumentException(DEFAULT_IS_TRUE_EX_MESSAGE);
}
}
// notNull
// ---------------------------------------------------------------------------------
/**
* <p>
* Validate that the specified argument is not {@code null}; otherwise throwing
* an exception.
*
* <pre>
* Validate.notNull(myObject, "The object must not be null");
* </pre>
*
* <p>
* The message of the exception is &quot;The validated object is null&quot;.
* </p>
*
* @param <T> the object type
* @param object the object to check
* @return the validated object (never {@code null} for method chaining)
* @throws NullPointerException if the object is {@code null}
* @see #notNull(Object, String, Object...)
*/
public static <T> T notNull(final T object) {
return notNull(object, DEFAULT_IS_NULL_EX_MESSAGE);
}
/**
* <p>
* Validate that the specified argument is not {@code null}; otherwise throwing
* an exception with the specified message.
*
* <pre>
* Validate.notNull(myObject, "The object must not be null");
* </pre>
*
* @param <T> the object type
* @param object the object to check
* @param message the {@link String#format(String, Object...)} exception message
* if invalid, not null
* @param values the optional values for the formatted exception message
* @return the validated object (never {@code null} for method chaining)
* @throws NullPointerException if the object is {@code null}
* @see #notNull(Object)
*/
public static <T> T notNull(final T object, final String message, final Object... values) {
return JDKBackports.javaUtilObject_requireNonNull(object, () -> HString.format(message, values));
}
// notEmpty array
// ---------------------------------------------------------------------------------
/**
* <p>
* Validate that the specified argument array is neither {@code null} nor a
* length of zero (no elements); otherwise throwing an exception with the
* specified message.
*
* <pre>
* Validate.notEmpty(myArray, "The array must not be empty");
* </pre>
*
* @param <T> the array type
* @param array the array to check, validated not null by this method
* @param message the {@link String#format(String, Object...)} exception message
* if invalid, not null
* @param values the optional values for the formatted exception message, null
* array not recommended
* @return the validated array (never {@code null} method for chaining)
* @throws NullPointerException if the array is {@code null}
* @throws IllegalArgumentException if the array is empty
* @see #notEmpty(Object[])
*/
public static <T> T[] notEmpty(final T[] array, final String message, final Object... values) {
JDKBackports.javaUtilObject_requireNonNull(array, () -> HString.format(message, values));
if (array.length == 0) {
throw new IllegalArgumentException(HString.format(message, values));
}
return array;
}
/**
* <p>
* Validate that the specified argument array is neither {@code null} nor a
* length of zero (no elements); otherwise throwing an exception.
*
* <pre>
* Validate.notEmpty(myArray);
* </pre>
*
* <p>
* The message in the exception is &quot;The validated array is empty&quot;.
*
* @param <T> the array type
* @param array the array to check, validated not null by this method
* @return the validated array (never {@code null} method for chaining)
* @throws NullPointerException if the array is {@code null}
* @throws IllegalArgumentException if the array is empty
* @see #notEmpty(Object[], String, Object...)
*/
public static <T> T[] notEmpty(final T[] array) {
return notEmpty(array, DEFAULT_NOT_EMPTY_ARRAY_EX_MESSAGE);
}
// notEmpty collection
// ---------------------------------------------------------------------------------
/**
* <p>
* Validate that the specified argument collection is neither {@code null} nor a
* size of zero (no elements); otherwise throwing an exception with the
* specified message.
*
* <pre>
* Validate.notEmpty(myCollection, "The collection must not be empty");
* </pre>
*
* @param <T> the collection type
* @param collection the collection to check, validated not null by this method
* @param message the {@link String#format(String, Object...)} exception
* message if invalid, not null
* @param values the optional values for the formatted exception message,
* null array not recommended
* @return the validated collection (never {@code null} method for chaining)
* @throws NullPointerException if the collection is {@code null}
* @throws IllegalArgumentException if the collection is empty
* @see #notEmpty(Object[])
*/
public static <T extends Collection<?>> T notEmpty(final T collection, final String message,
final Object... values) {
JDKBackports.javaUtilObject_requireNonNull(collection, () -> HString.format(message, values));
if (collection.isEmpty()) {
throw new IllegalArgumentException(HString.format(message, values));
}
return collection;
}
/**
* <p>
* Validate that the specified argument collection is neither {@code null} nor a
* size of zero (no elements); otherwise throwing an exception.
*
* <pre>
* Validate.notEmpty(myCollection);
* </pre>
*
* <p>
* The message in the exception is &quot;The validated collection is
* empty&quot;.
* </p>
*
* @param <T> the collection type
* @param collection the collection to check, validated not null by this method
* @return the validated collection (never {@code null} method for chaining)
* @throws NullPointerException if the collection is {@code null}
* @throws IllegalArgumentException if the collection is empty
* @see #notEmpty(Collection, String, Object...)
*/
public static <T extends Collection<?>> T notEmpty(final T collection) {
return notEmpty(collection, DEFAULT_NOT_EMPTY_COLLECTION_EX_MESSAGE);
}
// notEmpty map
// ---------------------------------------------------------------------------------
/**
* <p>
* Validate that the specified argument map is neither {@code null} nor a size
* of zero (no elements); otherwise throwing an exception with the specified
* message.
*
* <pre>
* Validate.notEmpty(myMap, "The map must not be empty");
* </pre>
*
* @param <T> the map type
* @param map the map to check, validated not null by this method
* @param message the {@link String#format(String, Object...)} exception message
* if invalid, not null
* @param values the optional values for the formatted exception message, null
* array not recommended
* @return the validated map (never {@code null} method for chaining)
* @throws NullPointerException if the map is {@code null}
* @throws IllegalArgumentException if the map is empty
* @see #notEmpty(Object[])
*/
public static <T extends Map<?, ?>> T notEmpty(final T map, final String message, final Object... values) {
JDKBackports.javaUtilObject_requireNonNull(map, () -> HString.format(message, values));
if (map.isEmpty()) {
throw new IllegalArgumentException(HString.format(message, values));
}
return map;
}
/**
* <p>
* Validate that the specified argument map is neither {@code null} nor a size
* of zero (no elements); otherwise throwing an exception.
*
* <pre>
* Validate.notEmpty(myMap);
* </pre>
*
* <p>
* The message in the exception is &quot;The validated map is empty&quot;.
* </p>
*
* @param <T> the map type
* @param map the map to check, validated not null by this method
* @return the validated map (never {@code null} method for chaining)
* @throws NullPointerException if the map is {@code null}
* @throws IllegalArgumentException if the map is empty
* @see #notEmpty(Map, String, Object...)
*/
public static <T extends Map<?, ?>> T notEmpty(final T map) {
return notEmpty(map, DEFAULT_NOT_EMPTY_MAP_EX_MESSAGE);
}
// notEmpty string
// ---------------------------------------------------------------------------------
/**
* <p>
* Validate that the specified argument character sequence is neither
* {@code null} nor a length of zero (no characters); otherwise throwing an
* exception with the specified message.
*
* <pre>
* Validate.notEmpty(myString, "The string must not be empty");
* </pre>
*
* @param <T> the character sequence type
* @param chars the character sequence to check, validated not null by this
* method
* @param message the {@link String#format(String, Object...)} exception message
* if invalid, not null
* @param values the optional values for the formatted exception message, null
* array not recommended
* @return the validated character sequence (never {@code null} method for
* chaining)
* @throws NullPointerException if the character sequence is {@code null}
* @throws IllegalArgumentException if the character sequence is empty
* @see #notEmpty(CharSequence)
*/
public static <T extends CharSequence> T notEmpty(final T chars, final String message, final Object... values) {
JDKBackports.javaUtilObject_requireNonNull(chars, () -> HString.format(message, values));
if (chars.length() == 0) {
throw new IllegalArgumentException(HString.format(message, values));
}
return chars;
}
/**
* <p>
* Validate that the specified argument character sequence is neither
* {@code null} nor a length of zero (no characters); otherwise throwing an
* exception with the specified message.
*
* <pre>
* Validate.notEmpty(myString);
* </pre>
*
* <p>
* The message in the exception is &quot;The validated character sequence is
* empty&quot;.
* </p>
*
* @param <T> the character sequence type
* @param chars the character sequence to check, validated not null by this
* method
* @return the validated character sequence (never {@code null} method for
* chaining)
* @throws NullPointerException if the character sequence is {@code null}
* @throws IllegalArgumentException if the character sequence is empty
* @see #notEmpty(CharSequence, String, Object...)
*/
public static <T extends CharSequence> T notEmpty(final T chars) {
return notEmpty(chars, DEFAULT_NOT_EMPTY_CHAR_SEQUENCE_EX_MESSAGE);
}
// notBlank string
// ---------------------------------------------------------------------------------
/**
* <p>
* Validate that the specified argument character sequence is neither
* {@code null}, a length of zero (no characters), empty nor whitespace;
* otherwise throwing an exception with the specified message.
*
* <pre>
* Validate.notBlank(myString, "The string must not be blank");
* </pre>
*
* @param <T> the character sequence type
* @param chars the character sequence to check, validated not null by this
* method
* @param message the {@link String#format(String, Object...)} exception message
* if invalid, not null
* @param values the optional values for the formatted exception message, null
* array not recommended
* @return the validated character sequence (never {@code null} method for
* chaining)
* @throws NullPointerException if the character sequence is {@code null}
* @throws IllegalArgumentException if the character sequence is blank
* @see #notBlank(CharSequence)
*
* @since 3.0
*/
public static <T extends CharSequence> T notBlank(final T chars, final String message, final Object... values) {
JDKBackports.javaUtilObject_requireNonNull(chars, () -> HString.format(message, values));
if (StringUtils.isBlank(chars)) {
throw new IllegalArgumentException(HString.format(message, values));
}
return chars;
}
/**
* <p>
* Validate that the specified argument character sequence is neither
* {@code null}, a length of zero (no characters), empty nor whitespace;
* otherwise throwing an exception.
*
* <pre>
* Validate.notBlank(myString);
* </pre>
*
* <p>
* The message in the exception is &quot;The validated character sequence is
* blank&quot;.
* </p>
*
* @param <T> the character sequence type
* @param chars the character sequence to check, validated not null by this
* method
* @return the validated character sequence (never {@code null} method for
* chaining)
* @throws NullPointerException if the character sequence is {@code null}
* @throws IllegalArgumentException if the character sequence is blank
* @see #notBlank(CharSequence, String, Object...)
*
* @since 3.0
*/
public static <T extends CharSequence> T notBlank(final T chars) {
return notBlank(chars, DEFAULT_NOT_BLANK_EX_MESSAGE);
}
// noNullElements array
// ---------------------------------------------------------------------------------
/**
* <p>
* Validate that the specified argument array is neither {@code null} nor
* contains any elements that are {@code null}; otherwise throwing an exception
* with the specified message.
*
* <pre>
* Validate.noNullElements(myArray, "The array contain null at position %d");
* </pre>
*
* <p>
* If the array is {@code null}, then the message in the exception is &quot;The
* validated object is null&quot;.
* </p>
*
* <p>
* If the array has a {@code null} element, then the iteration index of the
* invalid element is appended to the {@code values} argument.
* </p>
*
* @param <T> the array type
* @param array the array to check, validated not null by this method
* @param message the {@link String#format(String, Object...)} exception message
* if invalid, not null
* @param values the optional values for the formatted exception message, null
* array not recommended
* @return the validated array (never {@code null} method for chaining)
* @throws NullPointerException if the array is {@code null}
* @throws IllegalArgumentException if an element is {@code null}
* @see #noNullElements(Object[])
*/
public static <T> T[] noNullElements(final T[] array, final String message, final Object... values) {
notNull(array);
for (int i = 0; i < array.length; i++) {
if (array[i] == null) {
final Object[] values2 = new Object[values.length + 1];
System.arraycopy(values, 0, values2, 0, values.length);
values2[values.length - 1] = i;
throw new IllegalArgumentException(HString.format(message, values2));
}
}
return array;
}
/**
* <p>
* Validate that the specified argument array is neither {@code null} nor
* contains any elements that are {@code null}; otherwise throwing an exception.
* </p>
*
* <pre>
* Validate.noNullElements(myArray);
* </pre>
*
* <p>
* If the array is {@code null}, then the message in the exception is &quot;The
* validated object is null&quot;.
* </p>
*
* <p>
* If the array has a {@code null} element, then the message in the exception is
* &quot;The validated array contains null element at index: &quot; followed by
* the index.
* </p>
*
* @param <T> the array type
* @param array the array to check, validated not null by this method
* @return the validated array (never {@code null} method for chaining)
* @throws NullPointerException if the array is {@code null}
* @throws IllegalArgumentException if an element is {@code null}
* @see #noNullElements(Object[], String, Object...)
*/
public static <T> T[] noNullElements(final T[] array) {
return noNullElements(array, DEFAULT_NO_NULL_ELEMENTS_ARRAY_EX_MESSAGE);
}
// noNullElements iterable
// ---------------------------------------------------------------------------------
/**
* <p>
* Validate that the specified argument iterable is neither {@code null} nor
* contains any elements that are {@code null}; otherwise throwing an exception
* with the specified message.
*
* <pre>
* Validate.noNullElements(myCollection, "The collection contains null at position %d");
* </pre>
*
* <p>
* If the iterable is {@code null}, then the message in the exception is
* &quot;The validated object is null&quot;.
* </p>
*
* <p>
* If the iterable has a {@code null} element, then the iteration index of the
* invalid element is appended to the {@code values} argument.
* </p>
*
* @param <T> the iterable type
* @param iterable the iterable to check, validated not null by this method
* @param message the {@link String#format(String, Object...)} exception
* message if invalid, not null
* @param values the optional values for the formatted exception message, null
* array not recommended
* @return the validated iterable (never {@code null} method for chaining)
* @throws NullPointerException if the array is {@code null}
* @throws IllegalArgumentException if an element is {@code null}
* @see #noNullElements(Iterable)
*/
public static <T extends Iterable<?>> T noNullElements(final T iterable, final String message,
final Object... values) {
notNull(iterable);
int i = 0;
for (final Iterator<?> it = iterable.iterator(); it.hasNext(); i++) {
if (it.next() == null) {
final Object[] values2 = new Object[values.length + 1];
System.arraycopy(values, 0, values2, 0, values.length);
values2[values.length - 1] = i;
throw new IllegalArgumentException(HString.format(message, values2));
}
}
return iterable;
}
/**
* <p>
* Validate that the specified argument iterable is neither {@code null} nor
* contains any elements that are {@code null}; otherwise throwing an exception.
*
* <pre>
* Validate.noNullElements(myCollection);
* </pre>
*
* <p>
* If the iterable is {@code null}, then the message in the exception is
* &quot;The validated object is null&quot;.
* </p>
*
* <p>
* If the array has a {@code null} element, then the message in the exception is
* &quot;The validated iterable contains null element at index: &quot; followed
* by the index.
* </p>
*
* @param <T> the iterable type
* @param iterable the iterable to check, validated not null by this method
* @return the validated iterable (never {@code null} method for chaining)
* @throws NullPointerException if the array is {@code null}
* @throws IllegalArgumentException if an element is {@code null}
* @see #noNullElements(Iterable, String, Object...)
*/
public static <T extends Iterable<?>> T noNullElements(final T iterable) {
return noNullElements(iterable, DEFAULT_NO_NULL_ELEMENTS_COLLECTION_EX_MESSAGE);
}
// validIndex array
// ---------------------------------------------------------------------------------
/**
* <p>
* Validates that the index is within the bounds of the argument array;
* otherwise throwing an exception with the specified message.
* </p>
*
* <pre>
* Validate.validIndex(myArray, 2, "The array index is invalid: ");
* </pre>
*
* <p>
* If the array is {@code null}, then the message of the exception is &quot;The
* validated object is null&quot;.
* </p>
*
* @param <T> the array type
* @param array the array to check, validated not null by this method
* @param index the index to check
* @param message the {@link String#format(String, Object...)} exception message
* if invalid, not null
* @param values the optional values for the formatted exception message, null
* array not recommended
* @return the validated array (never {@code null} for method chaining)
* @throws NullPointerException if the array is {@code null}
* @throws IndexOutOfBoundsException if the index is invalid
* @see #validIndex(Object[], int)
*
* @since 3.0
*/
public static <T> T[] validIndex(final T[] array, final int index, final String message, final Object... values) {
notNull(array);
if (index < 0 || index >= array.length) {
throw new IndexOutOfBoundsException(HString.format(message, values));
}
return array;
}
/**
* <p>
* Validates that the index is within the bounds of the argument array;
* otherwise throwing an exception.
* </p>
*
* <pre>
* Validate.validIndex(myArray, 2);
* </pre>
*
* <p>
* If the array is {@code null}, then the message of the exception is &quot;The
* validated object is null&quot;.
* </p>
*
* <p>
* If the index is invalid, then the message of the exception is &quot;The
* validated array index is invalid: &quot; followed by the index.
* </p>
*
* @param <T> the array type
* @param array the array to check, validated not null by this method
* @param index the index to check
* @return the validated array (never {@code null} for method chaining)
* @throws NullPointerException if the array is {@code null}
* @throws IndexOutOfBoundsException if the index is invalid
* @see #validIndex(Object[], int, String, Object...)
*
* @since 3.0
*/
public static <T> T[] validIndex(final T[] array, final int index) {
return validIndex(array, index, DEFAULT_VALID_INDEX_ARRAY_EX_MESSAGE, Integer.valueOf(index));
}
// validIndex collection
// ---------------------------------------------------------------------------------
/**
* <p>
* Validates that the index is within the bounds of the argument collection;
* otherwise throwing an exception with the specified message.
* </p>
*
* <pre>
* Validate.validIndex(myCollection, 2, "The collection index is invalid: ");
* </pre>
*
* <p>
* If the collection is {@code null}, then the message of the exception is
* &quot;The validated object is null&quot;.
* </p>
*
* @param <T> the collection type
* @param collection the collection to check, validated not null by this method
* @param index the index to check
* @param message the {@link String#format(String, Object...)} exception
* message if invalid, not null
* @param values the optional values for the formatted exception message,
* null array not recommended
* @return the validated collection (never {@code null} for chaining)
* @throws NullPointerException if the collection is {@code null}
* @throws IndexOutOfBoundsException if the index is invalid
* @see #validIndex(Collection, int)
*
* @since 3.0
*/
public static <T extends Collection<?>> T validIndex(final T collection, final int index, final String message,
final Object... values) {
notNull(collection);
if (index < 0 || index >= collection.size()) {
throw new IndexOutOfBoundsException(HString.format(message, values));
}
return collection;
}
/**
* <p>
* Validates that the index is within the bounds of the argument collection;
* otherwise throwing an exception.
* </p>
*
* <pre>
* Validate.validIndex(myCollection, 2);
* </pre>
*
* <p>
* If the index is invalid, then the message of the exception is &quot;The
* validated collection index is invalid: &quot; followed by the index.
* </p>
*
* @param <T> the collection type
* @param collection the collection to check, validated not null by this method
* @param index the index to check
* @return the validated collection (never {@code null} for method chaining)
* @throws NullPointerException if the collection is {@code null}
* @throws IndexOutOfBoundsException if the index is invalid
* @see #validIndex(Collection, int, String, Object...)
*
* @since 3.0
*/
public static <T extends Collection<?>> T validIndex(final T collection, final int index) {
return validIndex(collection, index, DEFAULT_VALID_INDEX_COLLECTION_EX_MESSAGE, Integer.valueOf(index));
}
// validIndex string
// ---------------------------------------------------------------------------------
/**
* <p>
* Validates that the index is within the bounds of the argument character
* sequence; otherwise throwing an exception with the specified message.
* </p>
*
* <pre>
* Validate.validIndex(myStr, 2, "The string index is invalid: ");
* </pre>
*
* <p>
* If the character sequence is {@code null}, then the message of the exception
* is &quot;The validated object is null&quot;.
* </p>
*
* @param <T> the character sequence type
* @param chars the character sequence to check, validated not null by this
* method
* @param index the index to check
* @param message the {@link String#format(String, Object...)} exception message
* if invalid, not null
* @param values the optional values for the formatted exception message, null
* array not recommended
* @return the validated character sequence (never {@code null} for method
* chaining)
* @throws NullPointerException if the character sequence is {@code null}
* @throws IndexOutOfBoundsException if the index is invalid
* @see #validIndex(CharSequence, int)
*
* @since 3.0
*/
public static <T extends CharSequence> T validIndex(final T chars, final int index, final String message,
final Object... values) {
notNull(chars);
if (index < 0 || index >= chars.length()) {
throw new IndexOutOfBoundsException(HString.format(message, values));
}
return chars;
}
/**
* <p>
* Validates that the index is within the bounds of the argument character
* sequence; otherwise throwing an exception.
* </p>
*
* <pre>
* Validate.validIndex(myStr, 2);
* </pre>
*
* <p>
* If the character sequence is {@code null}, then the message of the exception
* is &quot;The validated object is null&quot;.
* </p>
*
* <p>
* If the index is invalid, then the message of the exception is &quot;The
* validated character sequence index is invalid: &quot; followed by the index.
* </p>
*
* @param <T> the character sequence type
* @param chars the character sequence to check, validated not null by this
* method
* @param index the index to check
* @return the validated character sequence (never {@code null} for method
* chaining)
* @throws NullPointerException if the character sequence is {@code null}
* @throws IndexOutOfBoundsException if the index is invalid
* @see #validIndex(CharSequence, int, String, Object...)
*
* @since 3.0
*/
public static <T extends CharSequence> T validIndex(final T chars, final int index) {
return validIndex(chars, index, DEFAULT_VALID_INDEX_CHAR_SEQUENCE_EX_MESSAGE, Integer.valueOf(index));
}
// validState
// ---------------------------------------------------------------------------------
/**
* <p>
* Validate that the stateful condition is {@code true}; otherwise throwing an
* exception. This method is useful when validating according to an arbitrary
* boolean expression, such as validating a primitive number or using your own
* custom validation expression.
* </p>
*
* <pre>
* Validate.validState(field &gt; 0);
* Validate.validState(this.isOk());
* </pre>
*
* <p>
* The message of the exception is &quot;The validated state is false&quot;.
* </p>
*
* @param expression the boolean expression to check
* @throws IllegalStateException if expression is {@code false}
* @see #validState(boolean, String, Object...)
*
* @since 3.0
*/
public static void validState(final boolean expression) {
if (!expression) {
throw new IllegalStateException(DEFAULT_VALID_STATE_EX_MESSAGE);
}
}
/**
* <p>
* Validate that the stateful condition is {@code true}; otherwise throwing an
* exception with the specified message. This method is useful when validating
* according to an arbitrary boolean expression, such as validating a primitive
* number or using your own custom validation expression.
* </p>
*
* <pre>
* Validate.validState(this.isOk(), "The state is not OK: %s", myObject);
* </pre>
*
* @param expression the boolean expression to check
* @param message the {@link String#format(String, Object...)} exception
* message if invalid, not null
* @param values the optional values for the formatted exception message,
* null array not recommended
* @throws IllegalStateException if expression is {@code false}
* @see #validState(boolean)
*
* @since 3.0
*/
public static void validState(final boolean expression, final String message, final Object... values) {
if (!expression) {
throw new IllegalStateException(HString.format(message, values));
}
}
// matchesPattern
// ---------------------------------------------------------------------------------
/**
* <p>
* Validate that the specified argument character sequence matches the specified
* regular expression pattern; otherwise throwing an exception.
* </p>
*
* <pre>
* Validate.matchesPattern("hi", "[a-z]*");
* </pre>
*
* <p>
* The syntax of the pattern is the one used in the {@link Pattern} class.
* </p>
*
* @param input the character sequence to validate, not null
* @param pattern the regular expression pattern, not null
* @throws IllegalArgumentException if the character sequence does not match the
* pattern
* @see #matchesPattern(CharSequence, String, String, Object...)
*
* @since 3.0
*/
public static void matchesPattern(final CharSequence input, final String pattern) {
// TODO when breaking BC, consider returning input
if (!Pattern.matches(pattern, input)) {
throw new IllegalArgumentException(HString.format(DEFAULT_MATCHES_PATTERN_EX, input, pattern));
}
}
/**
* <p>
* Validate that the specified argument character sequence matches the specified
* regular expression pattern; otherwise throwing an exception with the
* specified message.
* </p>
*
* <pre>
* Validate.matchesPattern("hi", "[a-z]*", "%s does not match %s", "hi" "[a-z]*");
* </pre>
*
* <p>
* The syntax of the pattern is the one used in the {@link Pattern} class.
* </p>
*
* @param input the character sequence to validate, not null
* @param pattern the regular expression pattern, not null
* @param message the {@link String#format(String, Object...)} exception message
* if invalid, not null
* @param values the optional values for the formatted exception message, null
* array not recommended
* @throws IllegalArgumentException if the character sequence does not match the
* pattern
* @see #matchesPattern(CharSequence, String)
*
* @since 3.0
*/
public static void matchesPattern(final CharSequence input, final String pattern, final String message,
final Object... values) {
// TODO when breaking BC, consider returning input
if (!Pattern.matches(pattern, input)) {
throw new IllegalArgumentException(HString.format(message, values));
}
}
// notNaN
// ---------------------------------------------------------------------------------
/**
* <p>
* Validates that the specified argument is not {@code NaN}; otherwise throwing
* an exception.
* </p>
*
* <pre>
* Validate.notNaN(myDouble);
* </pre>
*
* <p>
* The message of the exception is &quot;The validated value is not a
* number&quot;.
* </p>
*
* @param value the value to validate
* @throws IllegalArgumentException if the value is not a number
* @see #notNaN(double, java.lang.String, java.lang.Object...)
*
* @since 3.5
*/
public static void notNaN(final double value) {
notNaN(value, DEFAULT_NOT_NAN_EX_MESSAGE);
}
/**
* <p>
* Validates that the specified argument is not {@code NaN}; otherwise throwing
* an exception with the specified message.
* </p>
*
* <pre>
* Validate.notNaN(myDouble, "The value must be a number");
* </pre>
*
* @param value the value to validate
* @param message the {@link String#format(String, Object...)} exception message
* if invalid, not null
* @param values the optional values for the formatted exception message
* @throws IllegalArgumentException if the value is not a number
* @see #notNaN(double)
*
* @since 3.5
*/
public static void notNaN(final double value, final String message, final Object... values) {
if (Double.isNaN(value)) {
throw new IllegalArgumentException(HString.format(message, values));
}
}
// finite
// ---------------------------------------------------------------------------------
/**
* <p>
* Validates that the specified argument is not infinite or {@code NaN};
* otherwise throwing an exception.
* </p>
*
* <pre>
* Validate.finite(myDouble);
* </pre>
*
* <p>
* The message of the exception is &quot;The value is invalid: %f&quot;.
* </p>
*
* @param value the value to validate
* @throws IllegalArgumentException if the value is infinite or {@code NaN}
* @see #finite(double, java.lang.String, java.lang.Object...)
*
* @since 3.5
*/
public static void finite(final double value) {
finite(value, DEFAULT_FINITE_EX_MESSAGE, value);
}
/**
* <p>
* Validates that the specified argument is not infinite or {@code NaN};
* otherwise throwing an exception with the specified message.
* </p>
*
* <pre>
* Validate.finite(myDouble, "The argument must contain a numeric value");
* </pre>
*
* @param value the value to validate
* @param message the {@link String#format(String, Object...)} exception message
* if invalid, not null
* @param values the optional values for the formatted exception message
* @throws IllegalArgumentException if the value is infinite or {@code NaN}
* @see #finite(double)
*
* @since 3.5
*/
public static void finite(final double value, final String message, final Object... values) {
if (Double.isNaN(value) || Double.isInfinite(value)) {
throw new IllegalArgumentException(HString.format(message, values));
}
}
// inclusiveBetween
// ---------------------------------------------------------------------------------
/**
* <p>
* Validate that the specified argument object fall between the two inclusive
* values specified; otherwise, throws an exception.
* </p>
*
* <pre>
* Validate.inclusiveBetween(0, 2, 1);
* </pre>
*
* @param <T> the type of the argument object
* @param start the inclusive start value, not null
* @param end the inclusive end value, not null
* @param value the object to validate, not null
* @throws IllegalArgumentException if the value falls outside the boundaries
* @see #inclusiveBetween(Object, Object, Comparable, String, Object...)
*
* @since 3.0
*/
public static <T> void inclusiveBetween(final T start, final T end, final Comparable<T> value) {
// TODO when breaking BC, consider returning value
if (value.compareTo(start) < 0 || value.compareTo(end) > 0) {
throw new IllegalArgumentException(HString.format(DEFAULT_INCLUSIVE_BETWEEN_EX_MESSAGE, value, start, end));
}
}
/**
* <p>
* Validate that the specified argument object fall between the two inclusive
* values specified; otherwise, throws an exception with the specified message.
* </p>
*
* <pre>
* Validate.inclusiveBetween(0, 2, 1, "Not in boundaries");
* </pre>
*
* @param <T> the type of the argument object
* @param start the inclusive start value, not null
* @param end the inclusive end value, not null
* @param value the object to validate, not null
* @param message the {@link String#format(String, Object...)} exception message
* if invalid, not null
* @param values the optional values for the formatted exception message, null
* array not recommended
* @throws IllegalArgumentException if the value falls outside the boundaries
* @see #inclusiveBetween(Object, Object, Comparable)
*
* @since 3.0
*/
public static <T> void inclusiveBetween(final T start, final T end, final Comparable<T> value, final String message,
final Object... values) {
// TODO when breaking BC, consider returning value
if (value.compareTo(start) < 0 || value.compareTo(end) > 0) {
throw new IllegalArgumentException(HString.format(message, values));
}
}
/**
* Validate that the specified primitive value falls between the two inclusive
* values specified; otherwise, throws an exception.
*
* <pre>
* Validate.inclusiveBetween(0, 2, 1);
* </pre>
*
* @param start the inclusive start value
* @param end the inclusive end value
* @param value the value to validate
* @throws IllegalArgumentException if the value falls outside the boundaries
* (inclusive)
*
* @since 3.3
*/
@SuppressWarnings("boxing")
public static void inclusiveBetween(final long start, final long end, final long value) {
// TODO when breaking BC, consider returning value
if (value < start || value > end) {
throw new IllegalArgumentException(HString.format(DEFAULT_INCLUSIVE_BETWEEN_EX_MESSAGE, value, start, end));
}
}
/**
* Validate that the specified primitive value falls between the two inclusive
* values specified; otherwise, throws an exception with the specified message.
*
* <pre>
* Validate.inclusiveBetween(0, 2, 1, "Not in range");
* </pre>
*
* @param start the inclusive start value
* @param end the inclusive end value
* @param value the value to validate
* @param message the exception message if invalid, not null
*
* @throws IllegalArgumentException if the value falls outside the boundaries
*
* @since 3.3
*/
public static void inclusiveBetween(final long start, final long end, final long value, final String message) {
// TODO when breaking BC, consider returning value
if (value < start || value > end) {
throw new IllegalArgumentException(message);
}
}
/**
* Validate that the specified primitive value falls between the two inclusive
* values specified; otherwise, throws an exception.
*
* <pre>
* Validate.inclusiveBetween(0.1, 2.1, 1.1);
* </pre>
*
* @param start the inclusive start value
* @param end the inclusive end value
* @param value the value to validate
* @throws IllegalArgumentException if the value falls outside the boundaries
* (inclusive)
*
* @since 3.3
*/
@SuppressWarnings("boxing")
public static void inclusiveBetween(final double start, final double end, final double value) {
// TODO when breaking BC, consider returning value
if (value < start || value > end) {
throw new IllegalArgumentException(HString.format(DEFAULT_INCLUSIVE_BETWEEN_EX_MESSAGE, value, start, end));
}
}
/**
* Validate that the specified primitive value falls between the two inclusive
* values specified; otherwise, throws an exception with the specified message.
*
* <pre>
* Validate.inclusiveBetween(0.1, 2.1, 1.1, "Not in range");
* </pre>
*
* @param start the inclusive start value
* @param end the inclusive end value
* @param value the value to validate
* @param message the exception message if invalid, not null
*
* @throws IllegalArgumentException if the value falls outside the boundaries
*
* @since 3.3
*/
public static void inclusiveBetween(final double start, final double end, final double value,
final String message) {
// TODO when breaking BC, consider returning value
if (value < start || value > end) {
throw new IllegalArgumentException(message);
}
}
// exclusiveBetween
// ---------------------------------------------------------------------------------
/**
* <p>
* Validate that the specified argument object fall between the two exclusive
* values specified; otherwise, throws an exception.
* </p>
*
* <pre>
* Validate.exclusiveBetween(0, 2, 1);
* </pre>
*
* @param <T> the type of the argument object
* @param start the exclusive start value, not null
* @param end the exclusive end value, not null
* @param value the object to validate, not null
* @throws IllegalArgumentException if the value falls outside the boundaries
* @see #exclusiveBetween(Object, Object, Comparable, String, Object...)
*
* @since 3.0
*/
public static <T> void exclusiveBetween(final T start, final T end, final Comparable<T> value) {
// TODO when breaking BC, consider returning value
if (value.compareTo(start) <= 0 || value.compareTo(end) >= 0) {
throw new IllegalArgumentException(HString.format(DEFAULT_EXCLUSIVE_BETWEEN_EX_MESSAGE, value, start, end));
}
}
/**
* <p>
* Validate that the specified argument object fall between the two exclusive
* values specified; otherwise, throws an exception with the specified message.
* </p>
*
* <pre>
* Validate.exclusiveBetween(0, 2, 1, "Not in boundaries");
* </pre>
*
* @param <T> the type of the argument object
* @param start the exclusive start value, not null
* @param end the exclusive end value, not null
* @param value the object to validate, not null
* @param message the {@link String#format(String, Object...)} exception message
* if invalid, not null
* @param values the optional values for the formatted exception message, null
* array not recommended
* @throws IllegalArgumentException if the value falls outside the boundaries
* @see #exclusiveBetween(Object, Object, Comparable)
*
* @since 3.0
*/
public static <T> void exclusiveBetween(final T start, final T end, final Comparable<T> value, final String message,
final Object... values) {
// TODO when breaking BC, consider returning value
if (value.compareTo(start) <= 0 || value.compareTo(end) >= 0) {
throw new IllegalArgumentException(HString.format(message, values));
}
}
/**
* Validate that the specified primitive value falls between the two exclusive
* values specified; otherwise, throws an exception.
*
* <pre>
* Validate.exclusiveBetween(0, 2, 1);
* </pre>
*
* @param start the exclusive start value
* @param end the exclusive end value
* @param value the value to validate
* @throws IllegalArgumentException if the value falls out of the boundaries
*
* @since 3.3
*/
@SuppressWarnings("boxing")
public static void exclusiveBetween(final long start, final long end, final long value) {
// TODO when breaking BC, consider returning value
if (value <= start || value >= end) {
throw new IllegalArgumentException(HString.format(DEFAULT_EXCLUSIVE_BETWEEN_EX_MESSAGE, value, start, end));
}
}
/**
* Validate that the specified primitive value falls between the two exclusive
* values specified; otherwise, throws an exception with the specified message.
*
* <pre>
* Validate.exclusiveBetween(0, 2, 1, "Not in range");
* </pre>
*
* @param start the exclusive start value
* @param end the exclusive end value
* @param value the value to validate
* @param message the exception message if invalid, not null
*
* @throws IllegalArgumentException if the value falls outside the boundaries
*
* @since 3.3
*/
public static void exclusiveBetween(final long start, final long end, final long value, final String message) {
// TODO when breaking BC, consider returning value
if (value <= start || value >= end) {
throw new IllegalArgumentException(message);
}
}
/**
* Validate that the specified primitive value falls between the two exclusive
* values specified; otherwise, throws an exception.
*
* <pre>
* Validate.exclusiveBetween(0.1, 2.1, 1.1);
* </pre>
*
* @param start the exclusive start value
* @param end the exclusive end value
* @param value the value to validate
* @throws IllegalArgumentException if the value falls out of the boundaries
*
* @since 3.3
*/
@SuppressWarnings("boxing")
public static void exclusiveBetween(final double start, final double end, final double value) {
// TODO when breaking BC, consider returning value
if (value <= start || value >= end) {
throw new IllegalArgumentException(HString.format(DEFAULT_EXCLUSIVE_BETWEEN_EX_MESSAGE, value, start, end));
}
}
/**
* Validate that the specified primitive value falls between the two exclusive
* values specified; otherwise, throws an exception with the specified message.
*
* <pre>
* Validate.exclusiveBetween(0.1, 2.1, 1.1, "Not in range");
* </pre>
*
* @param start the exclusive start value
* @param end the exclusive end value
* @param value the value to validate
* @param message the exception message if invalid, not null
*
* @throws IllegalArgumentException if the value falls outside the boundaries
*
* @since 3.3
*/
public static void exclusiveBetween(final double start, final double end, final double value,
final String message) {
// TODO when breaking BC, consider returning value
if (value <= start || value >= end) {
throw new IllegalArgumentException(message);
}
}
// isInstanceOf
// ---------------------------------------------------------------------------------
/**
* Validates that the argument is an instance of the specified class, if not
* throws an exception.
*
* <p>
* This method is useful when validating according to an arbitrary class
* </p>
*
* <pre>
* Validate.isInstanceOf(OkClass.class, object);
* </pre>
*
* <p>
* The message of the exception is &quot;Expected type: {type}, actual:
* {obj_type}&quot;
* </p>
*
* @param type the class the object must be validated against, not null
* @param obj the object to check, null throws an exception
* @throws IllegalArgumentException if argument is not of specified class
* @see #isInstanceOf(Class, Object, String, Object...)
*
* @since 3.0
*/
public static void isInstanceOf(final Class<?> type, final Object obj) {
// TODO when breaking BC, consider returning obj
if (!type.isInstance(obj)) {
throw new IllegalArgumentException(HString.format(DEFAULT_IS_INSTANCE_OF_EX_MESSAGE, type.getName(),
obj == null ? "null" : obj.getClass().getName()));
}
}
/**
* <p>
* Validate that the argument is an instance of the specified class; otherwise
* throwing an exception with the specified message. This method is useful when
* validating according to an arbitrary class
* </p>
*
* <pre>
* Validate.isInstanceOf(OkClass.class, object, "Wrong class, object is of class %s", object.getClass().getName());
* </pre>
*
* @param type the class the object must be validated against, not null
* @param obj the object to check, null throws an exception
* @param message the {@link String#format(String, Object...)} exception message
* if invalid, not null
* @param values the optional values for the formatted exception message, null
* array not recommended
* @throws IllegalArgumentException if argument is not of specified class
* @see #isInstanceOf(Class, Object)
*
* @since 3.0
*/
public static void isInstanceOf(final Class<?> type, final Object obj, final String message,
final Object... values) {
// TODO when breaking BC, consider returning obj
if (!type.isInstance(obj)) {
throw new IllegalArgumentException(HString.format(message, values));
}
}
// isAssignableFrom
// ---------------------------------------------------------------------------------
/**
* Validates that the argument can be converted to the specified class, if not,
* throws an exception.
*
* <p>
* This method is useful when validating that there will be no casting errors.
* </p>
*
* <pre>
* Validate.isAssignableFrom(SuperClass.class, object.getClass());
* </pre>
*
* <p>
* The message format of the exception is &quot;Cannot assign {type} to
* {superType}&quot;
* </p>
*
* @param superType the class the class must be validated against, not null
* @param type the class to check, not null
* @throws IllegalArgumentException if type argument is not assignable to the
* specified superType
* @see #isAssignableFrom(Class, Class, String, Object...)
*
* @since 3.0
*/
public static void isAssignableFrom(final Class<?> superType, final Class<?> type) {
// TODO when breaking BC, consider returning type
if (!superType.isAssignableFrom(type)) {
throw new IllegalArgumentException(HString.format(DEFAULT_IS_ASSIGNABLE_EX_MESSAGE,
type == null ? "null" : type.getName(), superType.getName()));
}
}
/**
* Validates that the argument can be converted to the specified class, if not
* throws an exception.
*
* <p>
* This method is useful when validating if there will be no casting errors.
* </p>
*
* <pre>
* Validate.isAssignableFrom(SuperClass.class, object.getClass());
* </pre>
*
* <p>
* The message of the exception is &quot;The validated object can not be
* converted to the&quot; followed by the name of the class and
* &quot;class&quot;
* </p>
*
* @param superType the class the class must be validated against, not null
* @param type the class to check, not null
* @param message the {@link String#format(String, Object...)} exception
* message if invalid, not null
* @param values the optional values for the formatted exception message,
* null array not recommended
* @throws IllegalArgumentException if argument can not be converted to the
* specified class
* @see #isAssignableFrom(Class, Class)
*/
public static void isAssignableFrom(final Class<?> superType, final Class<?> type, final String message,
final Object... values) {
// TODO when breaking BC, consider returning type
if (!superType.isAssignableFrom(type)) {
throw new IllegalArgumentException(HString.format(message, values));
}
}
}