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/**
* Copyright 2012 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.common.util;
import java.nio.BufferOverflowException;
import java.nio.BufferUnderflowException;
import java.nio./*value2*/FloatBuffer/*value2*/;
/**
* Simple primitive-type stack.
* <p>
* Implemented operations:
* <ul>
* <li>FILO - First In, Last Out</li>
* </ul>
* </p>
*/
public class /*name*/FloatStack/*name*/ implements PrimitiveStack {
private int position;
private /*value*/float/*value*/[] buffer;
private int growSize;
/**
* @param initialSize initial size, must be > zero
* @param growSize grow size if {@link #position()} is reached, maybe <code>0</code>
* in which case an {@link IndexOutOfBoundsException} is thrown.
*/
public /*name*/FloatStack/*name*/(int initialSize, int growSize) {
this.position = 0;
this.growSize = growSize;
this.buffer = new /*value*/float/*value*/[initialSize];
}
@Override
public final int capacity() { return buffer.length; }
@Override
public final int position() { return position; }
@Override
public final int remaining() { return buffer.length - position; }
@Override
public final int getGrowSize() { return growSize; }
@Override
public final void setGrowSize(int newGrowSize) { growSize = newGrowSize; }
public final String toString() {
return "FloatStack[0..(top "+position+").."+buffer.length+", remaining "+remaining()+"]";
}
public final /*value*/float/*value*/[] buffer() { return buffer; }
private final void growIfNecessary(int length) throws IndexOutOfBoundsException {
if( position + length > buffer.length ) {
if( 0 >= growSize ) {
throw new IndexOutOfBoundsException("Out of fixed stack size: "+this);
}
/*value*/float/*value*/[] newBuffer =
new /*value*/float/*value*/[buffer.length + growSize];
System.arraycopy(buffer, 0, newBuffer, 0, position);
buffer = newBuffer;
}
}
/**
* FILO put operation
*
* @param src source buffer
* @param srcOffset offset of src
* @param length number of float elements to put from <code>src</code> on-top this stack
* @return the src float[]
* @throws IndexOutOfBoundsException if stack cannot grow due to zero grow-size or offset+length exceeds src.
*/
public final /*value*/float/*value*/[]
putOnTop(/*value*/float/*value*/[] src, int srcOffset, int length) throws IndexOutOfBoundsException {
growIfNecessary(length);
System.arraycopy(src, srcOffset, buffer, position, length);
position += length;
return src;
}
/**
* FILO put operation
*
* @param src source buffer, it's position is incremented by <code>length</code>
* @param length number of float elements to put from <code>src</code> on-top this stack
* @return the src FloatBuffer
* @throws IndexOutOfBoundsException if stack cannot grow due to zero grow-size
* @throws BufferUnderflowException if <code>src</code> FloatBuffer has less remaining elements than <code>length</code>.
*/
public final /*value2*/FloatBuffer/*value2*/
putOnTop(/*value2*/FloatBuffer/*value2*/ src, int length) throws IndexOutOfBoundsException, BufferUnderflowException {
growIfNecessary(length);
src.get(buffer, position, length);
position += length;
return src;
}
/**
* FILO get operation
*
* @param dest destination buffer
* @param destOffset offset of dest
* @param length number of float elements to get from-top this stack to <code>dest</code>.
* @return the dest float[]
* @throws IndexOutOfBoundsException if stack or <code>dest</code> has less elements than <code>length</code>.
*/
public final /*value*/float/*value*/[]
getFromTop(/*value*/float/*value*/[] dest, int destOffset, int length) throws IndexOutOfBoundsException {
System.arraycopy(buffer, position-length, dest, destOffset, length);
position -= length;
return dest;
}
/**
* FILO get operation
*
* @param dest destination buffer, it's position is incremented by <code>length</code>.
* @param length number of float elements to get from-top this stack to <code>dest</code>.
* @return the dest FloatBuffer
* @throws IndexOutOfBoundsException if stack has less elements than length
* @throws BufferOverflowException if <code>src</code> FloatBuffer has less remaining elements than <code>length</code>.
*/
public final /*value2*/FloatBuffer/*value2*/
getFromTop(/*value2*/FloatBuffer/*value2*/ dest, int length) throws IndexOutOfBoundsException, BufferOverflowException {
dest.put(buffer, position-length, length);
position -= length;
return dest;
}
}
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