/*
  * Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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  * questions.
  */
 
 package java.lang.reflect;
 
+import jdk.internal.HotSpotIntrinsicCandidate;
+
 /**
  * The {@code Array} class provides static methods to dynamically create and
  * access Java arrays.
  *
  * <p>{@code Array} permits widening conversions to occur during a get or set
  * operation, but throws an {@code IllegalArgumentException} if a narrowing
  * conversion would occur.
  *
  * @author Nakul Saraiya
+ * @since 1.1
  */
 public final
 class Array {
 
     /**
      * Constructor.  Class Array is not instantiable.
      */
     private Array() {}
 
     /**
      * Creates a new array with the specified component type and
      * length.
      * Invoking this method is equivalent to creating an array
      * as follows:
      * <blockquote>
      * <pre>
      * int[] x = {length};
      * Array.newInstance(componentType, x);
      * </pre>
      * </blockquote>
      *
      * <p>The number of dimensions of the new array must not
      * exceed 255.
      *
      * @param componentType the {@code Class} object representing the
      * component type of the new array
      * @param length the length of the new array
      * @return the new array
      * @exception NullPointerException if the specified
      * {@code componentType} parameter is null
      * @exception IllegalArgumentException if componentType is {@link
      * Void#TYPE} or if the number of dimensions of the requested array
      * instance exceed 255.
      * @exception NegativeArraySizeException if the specified {@code length}
      * is negative
      */
     public static Object newInstance(Class<?> componentType, int length)
         throws NegativeArraySizeException {
         return newArray(componentType, length);
     }
 
     /**
      * Creates a new array
      * with the specified component type and dimensions.
      * If {@code componentType}
      * represents a non-array class or interface, the new array
      * has {@code dimensions.length} dimensions and
      * {@code componentType} as its component type. If
      * {@code componentType} represents an array class, the
      * number of dimensions of the new array is equal to the sum
      * of {@code dimensions.length} and the number of
      * dimensions of {@code componentType}. In this case, the
      * component type of the new array is the component type of
      * {@code componentType}.
      *
      * <p>The number of dimensions of the new array must not
      * exceed 255.
      *
      * @param componentType the {@code Class} object representing the component
      * type of the new array
      * @param dimensions an array of {@code int} representing the dimensions of
      * the new array
      * @return the new array
      * @exception NullPointerException if the specified
      * {@code componentType} argument is null
      * @exception IllegalArgumentException if the specified {@code dimensions}
      * argument is a zero-dimensional array, if componentType is {@link
      * Void#TYPE}, or if the number of dimensions of the requested array
      * instance exceed 255.
      * @exception NegativeArraySizeException if any of the components in
      * the specified {@code dimensions} argument is negative.
      */
     public static Object newInstance(Class<?> componentType, int... dimensions)
         throws IllegalArgumentException, NegativeArraySizeException {
         return multiNewArray(componentType, dimensions);
     }
 
     /**
      * Returns the length of the specified array object, as an {@code int}.
      *
      * @param array the array
      * @return the length of the array
      * @exception IllegalArgumentException if the object argument is not
      * an array
      */
+    @HotSpotIntrinsicCandidate
     public static native int getLength(Object array)
         throws IllegalArgumentException;
 
     /**
      * Returns the value of the indexed component in the specified
      * array object.  The value is automatically wrapped in an object
      * if it has a primitive type.
      *
      * @param array the array
      * @param index the index
      * @return the (possibly wrapped) value of the indexed component in
      * the specified array
      * @exception NullPointerException If the specified object is null
      * @exception IllegalArgumentException If the specified object is not
      * an array
      * @exception ArrayIndexOutOfBoundsException If the specified {@code index}
      * argument is negative, or if it is greater than or equal to the
      * length of the specified array
      */
     public static native Object get(Object array, int index)
         throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
 
     /**
      * Returns the value of the indexed component in the specified
      * array object, as a {@code boolean}.
      *
      * @param array the array
      * @param index the index
      * @return the value of the indexed component in the specified array
      * @exception NullPointerException If the specified object is null
      * @exception IllegalArgumentException If the specified object is not
      * an array, or if the indexed element cannot be converted to the
      * return type by an identity or widening conversion
      * @exception ArrayIndexOutOfBoundsException If the specified {@code index}
      * argument is negative, or if it is greater than or equal to the
      * length of the specified array
      * @see Array#get
      */
     public static native boolean getBoolean(Object array, int index)
         throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
 
     /**
      * Returns the value of the indexed component in the specified
      * array object, as a {@code byte}.
      *
      * @param array the array
      * @param index the index
      * @return the value of the indexed component in the specified array
      * @exception NullPointerException If the specified object is null
      * @exception IllegalArgumentException If the specified object is not
      * an array, or if the indexed element cannot be converted to the
      * return type by an identity or widening conversion
      * @exception ArrayIndexOutOfBoundsException If the specified {@code index}
      * argument is negative, or if it is greater than or equal to the
      * length of the specified array
      * @see Array#get
      */
     public static native byte getByte(Object array, int index)
         throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
 
     /**
      * Returns the value of the indexed component in the specified
      * array object, as a {@code char}.
      *
      * @param array the array
      * @param index the index
      * @return the value of the indexed component in the specified array
      * @exception NullPointerException If the specified object is null
      * @exception IllegalArgumentException If the specified object is not
      * an array, or if the indexed element cannot be converted to the
      * return type by an identity or widening conversion
      * @exception ArrayIndexOutOfBoundsException If the specified {@code index}
      * argument is negative, or if it is greater than or equal to the
      * length of the specified array
      * @see Array#get
      */
     public static native char getChar(Object array, int index)
         throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
 
     /**
      * Returns the value of the indexed component in the specified
      * array object, as a {@code short}.
      *
      * @param array the array
      * @param index the index
      * @return the value of the indexed component in the specified array
      * @exception NullPointerException If the specified object is null
      * @exception IllegalArgumentException If the specified object is not
      * an array, or if the indexed element cannot be converted to the
      * return type by an identity or widening conversion
      * @exception ArrayIndexOutOfBoundsException If the specified {@code index}
      * argument is negative, or if it is greater than or equal to the
      * length of the specified array
      * @see Array#get
      */
     public static native short getShort(Object array, int index)
         throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
 
     /**
      * Returns the value of the indexed component in the specified
      * array object, as an {@code int}.
      *
      * @param array the array
      * @param index the index
      * @return the value of the indexed component in the specified array
      * @exception NullPointerException If the specified object is null
      * @exception IllegalArgumentException If the specified object is not
      * an array, or if the indexed element cannot be converted to the
      * return type by an identity or widening conversion
      * @exception ArrayIndexOutOfBoundsException If the specified {@code index}
      * argument is negative, or if it is greater than or equal to the
      * length of the specified array
      * @see Array#get
      */
     public static native int getInt(Object array, int index)
         throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
 
     /**
      * Returns the value of the indexed component in the specified
      * array object, as a {@code long}.
      *
      * @param array the array
      * @param index the index
      * @return the value of the indexed component in the specified array
      * @exception NullPointerException If the specified object is null
      * @exception IllegalArgumentException If the specified object is not
      * an array, or if the indexed element cannot be converted to the
      * return type by an identity or widening conversion
      * @exception ArrayIndexOutOfBoundsException If the specified {@code index}
      * argument is negative, or if it is greater than or equal to the
      * length of the specified array
      * @see Array#get
      */
     public static native long getLong(Object array, int index)
         throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
 
     /**
      * Returns the value of the indexed component in the specified
      * array object, as a {@code float}.
      *
      * @param array the array
      * @param index the index
      * @return the value of the indexed component in the specified array
      * @exception NullPointerException If the specified object is null
      * @exception IllegalArgumentException If the specified object is not
      * an array, or if the indexed element cannot be converted to the
      * return type by an identity or widening conversion
      * @exception ArrayIndexOutOfBoundsException If the specified {@code index}
      * argument is negative, or if it is greater than or equal to the
      * length of the specified array
      * @see Array#get
      */
     public static native float getFloat(Object array, int index)
         throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
 
     /**
      * Returns the value of the indexed component in the specified
      * array object, as a {@code double}.
      *
      * @param array the array
      * @param index the index
      * @return the value of the indexed component in the specified array
      * @exception NullPointerException If the specified object is null
      * @exception IllegalArgumentException If the specified object is not
      * an array, or if the indexed element cannot be converted to the
      * return type by an identity or widening conversion
      * @exception ArrayIndexOutOfBoundsException If the specified {@code index}
      * argument is negative, or if it is greater than or equal to the
      * length of the specified array
      * @see Array#get
      */
     public static native double getDouble(Object array, int index)
         throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
 
     /**
      * Sets the value of the indexed component of the specified array
      * object to the specified new value.  The new value is first
      * automatically unwrapped if the array has a primitive component
      * type.
      * @param array the array
      * @param index the index into the array
      * @param value the new value of the indexed component
      * @exception NullPointerException If the specified object argument
      * is null
      * @exception IllegalArgumentException If the specified object argument
      * is not an array, or if the array component type is primitive and
      * an unwrapping conversion fails
      * @exception ArrayIndexOutOfBoundsException If the specified {@code index}
      * argument is negative, or if it is greater than or equal to
      * the length of the specified array
      */
     public static native void set(Object array, int index, Object value)
         throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
 
     /**
      * Sets the value of the indexed component of the specified array
      * object to the specified {@code boolean} value.
      * @param array the array
      * @param index the index into the array
      * @param z the new value of the indexed component
      * @exception NullPointerException If the specified object argument
      * is null
      * @exception IllegalArgumentException If the specified object argument
      * is not an array, or if the specified value cannot be converted
      * to the underlying array's component type by an identity or a
      * primitive widening conversion
      * @exception ArrayIndexOutOfBoundsException If the specified {@code index}
      * argument is negative, or if it is greater than or equal to
      * the length of the specified array
      * @see Array#set
      */
     public static native void setBoolean(Object array, int index, boolean z)
         throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
 
     /**
      * Sets the value of the indexed component of the specified array
      * object to the specified {@code byte} value.
      * @param array the array
      * @param index the index into the array
      * @param b the new value of the indexed component
      * @exception NullPointerException If the specified object argument
      * is null
      * @exception IllegalArgumentException If the specified object argument
      * is not an array, or if the specified value cannot be converted
      * to the underlying array's component type by an identity or a
      * primitive widening conversion
      * @exception ArrayIndexOutOfBoundsException If the specified {@code index}
      * argument is negative, or if it is greater than or equal to
      * the length of the specified array
      * @see Array#set
      */
     public static native void setByte(Object array, int index, byte b)
         throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
 
     /**
      * Sets the value of the indexed component of the specified array
      * object to the specified {@code char} value.
      * @param array the array
      * @param index the index into the array
      * @param c the new value of the indexed component
      * @exception NullPointerException If the specified object argument
      * is null
      * @exception IllegalArgumentException If the specified object argument
      * is not an array, or if the specified value cannot be converted
      * to the underlying array's component type by an identity or a
      * primitive widening conversion
      * @exception ArrayIndexOutOfBoundsException If the specified {@code index}
      * argument is negative, or if it is greater than or equal to
      * the length of the specified array
      * @see Array#set
      */
     public static native void setChar(Object array, int index, char c)
         throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
 
     /**
      * Sets the value of the indexed component of the specified array
      * object to the specified {@code short} value.
      * @param array the array
      * @param index the index into the array
      * @param s the new value of the indexed component
      * @exception NullPointerException If the specified object argument
      * is null
      * @exception IllegalArgumentException If the specified object argument
      * is not an array, or if the specified value cannot be converted
      * to the underlying array's component type by an identity or a
      * primitive widening conversion
      * @exception ArrayIndexOutOfBoundsException If the specified {@code index}
      * argument is negative, or if it is greater than or equal to
      * the length of the specified array
      * @see Array#set
      */
     public static native void setShort(Object array, int index, short s)
         throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
 
     /**
      * Sets the value of the indexed component of the specified array
      * object to the specified {@code int} value.
      * @param array the array
      * @param index the index into the array
      * @param i the new value of the indexed component
      * @exception NullPointerException If the specified object argument
      * is null
      * @exception IllegalArgumentException If the specified object argument
      * is not an array, or if the specified value cannot be converted
      * to the underlying array's component type by an identity or a
      * primitive widening conversion
      * @exception ArrayIndexOutOfBoundsException If the specified {@code index}
      * argument is negative, or if it is greater than or equal to
      * the length of the specified array
      * @see Array#set
      */
     public static native void setInt(Object array, int index, int i)
         throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
 
     /**
      * Sets the value of the indexed component of the specified array
      * object to the specified {@code long} value.
      * @param array the array
      * @param index the index into the array
      * @param l the new value of the indexed component
      * @exception NullPointerException If the specified object argument
      * is null
      * @exception IllegalArgumentException If the specified object argument
      * is not an array, or if the specified value cannot be converted
      * to the underlying array's component type by an identity or a
      * primitive widening conversion
      * @exception ArrayIndexOutOfBoundsException If the specified {@code index}
      * argument is negative, or if it is greater than or equal to
      * the length of the specified array
      * @see Array#set
      */
     public static native void setLong(Object array, int index, long l)
         throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
 
     /**
      * Sets the value of the indexed component of the specified array
      * object to the specified {@code float} value.
      * @param array the array
      * @param index the index into the array
      * @param f the new value of the indexed component
      * @exception NullPointerException If the specified object argument
      * is null
      * @exception IllegalArgumentException If the specified object argument
      * is not an array, or if the specified value cannot be converted
      * to the underlying array's component type by an identity or a
      * primitive widening conversion
      * @exception ArrayIndexOutOfBoundsException If the specified {@code index}
      * argument is negative, or if it is greater than or equal to
      * the length of the specified array
      * @see Array#set
      */
     public static native void setFloat(Object array, int index, float f)
         throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
 
     /**
      * Sets the value of the indexed component of the specified array
      * object to the specified {@code double} value.
      * @param array the array
      * @param index the index into the array
      * @param d the new value of the indexed component
      * @exception NullPointerException If the specified object argument
      * is null
      * @exception IllegalArgumentException If the specified object argument
      * is not an array, or if the specified value cannot be converted
      * to the underlying array's component type by an identity or a
      * primitive widening conversion
      * @exception ArrayIndexOutOfBoundsException If the specified {@code index}
      * argument is negative, or if it is greater than or equal to
      * the length of the specified array
      * @see Array#set
      */
     public static native void setDouble(Object array, int index, double d)
         throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
 
     /*
      * Private
      */
 
+    @HotSpotIntrinsicCandidate
     private static native Object newArray(Class<?> componentType, int length)
         throws NegativeArraySizeException;
 
     private static native Object multiNewArray(Class<?> componentType,
         int[] dimensions)
         throws IllegalArgumentException, NegativeArraySizeException;
 
 
 }