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Subject: svn commit: r600136 - in
 /activemq/activemq-cpp/decaf/trunk/src/main/decaf/nio: FloatBuffer.cpp
 FloatBuffer.h
Date: Sat, 01 Dec 2007 14:12:54 -0000
To: commits@activemq.apache.org
From: tabish@apache.org
Message-Id: <20071201141254.D6B151A983A@eris.apache.org>

Author: tabish
Date: Sat Dec  1 06:12:54 2007
New Revision: 600136

URL: http://svn.apache.org/viewvc?rev=600136&view=rev
Log:
http://issues.apache.org/activemq/browse/AMQCPP-103

Working on the NIO package

Added:
    activemq/activemq-cpp/decaf/trunk/src/main/decaf/nio/FloatBuffer.cpp
    activemq/activemq-cpp/decaf/trunk/src/main/decaf/nio/FloatBuffer.h

Added: activemq/activemq-cpp/decaf/trunk/src/main/decaf/nio/FloatBuffer.cpp
URL: http://svn.apache.org/viewvc/activemq/activemq-cpp/decaf/trunk/src/main/decaf/nio/FloatBuffer.cpp?rev=600136&view=auto
==============================================================================
--- activemq/activemq-cpp/decaf/trunk/src/main/decaf/nio/FloatBuffer.cpp (added)
+++ activemq/activemq-cpp/decaf/trunk/src/main/decaf/nio/FloatBuffer.cpp Sat Dec  1 06:12:54 2007
@@ -0,0 +1,252 @@
+/*
+ * 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.
+ */
+
+#include "FloatBuffer.h"
+
+#include <decaf/lang/Float.h>
+#include <decaf/lang/Math.h>
+
+using namespace std;
+using namespace decaf;
+using namespace decaf::nio;
+using namespace decaf::lang;
+using namespace decaf::lang::exceptions;
+
+////////////////////////////////////////////////////////////////////////////////
+FloatBuffer::FloatBuffer( std::size_t capacity )
+ :  Buffer( capacity ) {
+
+}
+
+////////////////////////////////////////////////////////////////////////////////
+std::string FloatBuffer::toString() const {
+
+    std::string strbuf;
+
+    for( std::size_t i = this->position(); i < this->limit(); i++ ) {
+        strbuf.append( Float::valueOf( get( i ) ).toString() );
+    }
+
+    return strbuf;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+FloatBuffer& FloatBuffer::get( std::vector<float> buffer )
+    throw ( BufferUnderflowException ) {
+
+    try{
+
+        if( !buffer.empty() ) {
+            this->get( &buffer[0], 0, buffer.size() );
+        }
+        return *this;
+    }
+    DECAF_CATCH_RETHROW( BufferUnderflowException )
+    DECAF_CATCH_EXCEPTION_CONVERT( Exception, BufferUnderflowException )
+    DECAF_CATCHALL_THROW( BufferUnderflowException )
+}
+
+////////////////////////////////////////////////////////////////////////////////
+FloatBuffer& FloatBuffer::get( float* buffer, std::size_t offset, std::size_t length )
+    throw( BufferUnderflowException,
+           lang::exceptions::NullPointerException ) {
+
+    try{
+
+        if( length == 0 ) {
+            return *this;
+        }
+
+        if( buffer == NULL ) {
+            throw NullPointerException(
+                __FILE__, __LINE__,
+                "FloatBuffer::get - Passed Buffer is Null" );
+        }
+
+        if( length > remaining() ) {
+            throw BufferUnderflowException(
+                __FILE__, __LINE__,
+                "FloatBuffer::get - Not enough data to fill length = %d", length );
+        }
+
+        for( std::size_t ix = 0; ix < length; ++ix ){
+            buffer[offset + ix] = this->get();
+        }
+
+        return *this;
+    }
+    DECAF_CATCH_RETHROW( BufferUnderflowException )
+    DECAF_CATCH_EXCEPTION_CONVERT( Exception, BufferUnderflowException )
+    DECAF_CATCHALL_THROW( BufferUnderflowException )
+}
+
+////////////////////////////////////////////////////////////////////////////////
+FloatBuffer& FloatBuffer::put( FloatBuffer& src )
+    throw( BufferOverflowException, ReadOnlyBufferException,
+           lang::exceptions::IllegalArgumentException ) {
+
+    try{
+
+        if( this == &src ) {
+            throw IllegalArgumentException(
+                __FILE__, __LINE__,
+                "FloatBuffer::put - Can't put Self" );
+        }
+
+        if( this->isReadOnly() ) {
+            throw ReadOnlyBufferException(
+                __FILE__, __LINE__,
+                "FloatBuffer::put - This buffer is Read Only.");
+        }
+
+        if( src.remaining() > this->remaining() ) {
+            throw BufferOverflowException(
+                __FILE__, __LINE__,
+                "FloatBuffer::put - Not enough space remaining to put src." );
+        }
+
+        while( src.hasRemaining() ) {
+            this->put( src.get() );
+        }
+
+        return *this;
+    }
+    DECAF_CATCH_RETHROW( BufferOverflowException )
+    DECAF_CATCH_RETHROW( ReadOnlyBufferException )
+    DECAF_CATCH_RETHROW( IllegalArgumentException )
+    DECAF_CATCH_EXCEPTION_CONVERT( Exception, BufferOverflowException )
+    DECAF_CATCHALL_THROW( BufferOverflowException )
+}
+
+////////////////////////////////////////////////////////////////////////////////
+FloatBuffer& FloatBuffer::put( const float* buffer, std::size_t offset, std::size_t length )
+    throw( BufferOverflowException, ReadOnlyBufferException,
+           lang::exceptions::NullPointerException ) {
+
+    try{
+
+        if( length == 0 ) {
+            return *this;
+        }
+
+        if( this->isReadOnly() ) {
+            throw ReadOnlyBufferException(
+                __FILE__, __LINE__,
+                "FloatBuffer::put - This buffer is Read Only.");
+        }
+
+        if( buffer == NULL ) {
+            throw NullPointerException(
+                __FILE__, __LINE__,
+                "FloatBuffer::put - Passed Buffer is Null.");
+        }
+
+        if( length > this->remaining() ) {
+            throw BufferOverflowException(
+                __FILE__, __LINE__,
+                "FloatBuffer::put - Not Enough space to store requested Data.");
+        }
+
+        // read length bytes starting from the offset
+        for( std::size_t ix = 0; ix < length; ++ix ) {
+            this->put( buffer[ix + offset] );
+        }
+
+        return *this;
+    }
+    DECAF_CATCH_RETHROW( BufferOverflowException )
+    DECAF_CATCH_RETHROW( ReadOnlyBufferException )
+    DECAF_CATCH_RETHROW( NullPointerException )
+    DECAF_CATCH_EXCEPTION_CONVERT( Exception, BufferOverflowException )
+    DECAF_CATCHALL_THROW( BufferOverflowException )
+}
+
+////////////////////////////////////////////////////////////////////////////////
+FloatBuffer& FloatBuffer::put( std::vector<float>& buffer )
+    throw( BufferOverflowException, ReadOnlyBufferException ) {
+
+    try{
+
+        if( !buffer.empty() ) {
+            this->put( &buffer[0], 0, buffer.size() );
+        }
+
+        return *this;
+    }
+    DECAF_CATCH_RETHROW( BufferOverflowException )
+    DECAF_CATCH_RETHROW( ReadOnlyBufferException )
+    DECAF_CATCH_EXCEPTION_CONVERT( Exception, BufferOverflowException )
+    DECAF_CATCHALL_THROW( BufferOverflowException )
+}
+
+////////////////////////////////////////////////////////////////////////////////
+int FloatBuffer::compareTo( const FloatBuffer& value ) const {
+
+    int compareRemaining = Math::min( remaining(), value.remaining() );
+
+    std::size_t thisPos = this->position();
+    std::size_t otherPos = value.position();
+    float thisVal, otherVal;
+
+    while( compareRemaining > 0 ) {
+
+        thisVal = get( thisPos );
+        otherVal = value.get( otherPos );
+
+        if( thisVal != otherVal ) {
+            return thisVal < otherVal ? -1 : 1;
+        }
+
+        thisPos++;
+        otherPos++;
+        compareRemaining--;
+    }
+
+    return remaining() - value.remaining();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+bool FloatBuffer::equals( const FloatBuffer& value ) const {
+
+    if( &value == this ) {
+        return true;
+    }
+
+    if( this->remaining() != value.remaining() ) {
+        return false;
+    }
+
+    std::size_t myPosition = this->position();
+    std::size_t otherPosition = value.position();
+    bool equalSoFar = true;
+
+    while( equalSoFar && ( myPosition < this->limit() ) ) {
+        equalSoFar = get( myPosition++ ) == value.get( otherPosition++ );
+    }
+
+    return equalSoFar;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+bool FloatBuffer::operator==( const FloatBuffer& value ) const {
+    return this->equals( value );
+}
+
+////////////////////////////////////////////////////////////////////////////////
+bool FloatBuffer::operator<( const FloatBuffer& value ) const {
+    return this->compareTo( value ) < 0 ? true : false;
+}

Added: activemq/activemq-cpp/decaf/trunk/src/main/decaf/nio/FloatBuffer.h
URL: http://svn.apache.org/viewvc/activemq/activemq-cpp/decaf/trunk/src/main/decaf/nio/FloatBuffer.h?rev=600136&view=auto
==============================================================================
--- activemq/activemq-cpp/decaf/trunk/src/main/decaf/nio/FloatBuffer.h (added)
+++ activemq/activemq-cpp/decaf/trunk/src/main/decaf/nio/FloatBuffer.h Sat Dec  1 06:12:54 2007
@@ -0,0 +1,388 @@
+/*
+ * 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.
+ */
+
+#ifndef _DECAF_NIO_FLOATBUFFER_H_
+#define _DECAF_NIO_FLOATBUFFER_H_
+
+#include <decaf/nio/Buffer.h>
+#include <decaf/lang/Comparable.h>
+#include <decaf/lang/exceptions/NullPointerException.h>
+#include <decaf/lang/exceptions/IndexOutOfBoundsException.h>
+#include <decaf/nio/BufferUnderflowException.h>
+#include <decaf/nio/BufferOverflowException.h>
+#include <decaf/nio/ReadOnlyBufferException.h>
+
+namespace decaf{
+namespace nio{
+
+    /**
+     * This class defines four categories of operations upon float buffers:
+     *
+     * o Absolute and relative get and put methods that read and write single floats;
+     * o Relative bulk get methods that transfer contiguous sequences of floats from
+     *   this buffer into an array; and
+     * o Relative bulk put methods that transfer contiguous sequences of floats from a
+     *   float array or some other float buffer into this buffer
+     * o Methods for compacting, duplicating, and slicing a float buffer.
+     *
+     * Double buffers can be created either by allocation, which allocates space for the
+     * buffer's content, by wrapping an existing float array into a buffer, or by
+     * creating a view of an existing byte buffer
+     *
+     * Methods in this class that do not otherwise have a value to return are specified
+     * to return the buffer upon which they are invoked. This allows method invocations
+     * to be chained.
+     */
+    class FloatBuffer : public Buffer,
+                        public lang::Comparable<FloatBuffer> {
+    protected:
+
+        /**
+        * Creates a FloatBuffer object that has its backing array allocated internally
+        * and is then owned and deleted when this object is deleted.  The array is
+        * initially created with all elements initialized to zero.
+        * @param capacity - size and limit of the Buffer in doubles
+        */
+        FloatBuffer( std::size_t capacity );
+
+    public:
+
+        virtual ~FloatBuffer();
+
+        /**
+         * @returns a std::string describing this object
+         */
+        virtual std::string toString() const;
+
+        /**
+         * Returns the float array that backs this buffer  (optional operation).
+         * <p>
+         * Modifications to this buffer's content will cause the returned array's content
+         * to be modified, and vice versa.
+         * <p>
+         * Invoke the hasArray method before invoking this method in order to ensure that
+         * this buffer has an accessible backing array.
+         * @returns the array that backs this Buffer
+         * @throws ReadOnlyBufferException if this Buffer is read only.
+         * @throws UnsupportedOperationException if the underlying store has no array.
+         */
+        virtual float* array()
+            throw( decaf::lang::exceptions::UnsupportedOperationException,
+                   ReadOnlyBufferException ) = 0;
+
+        /**
+         * Returns the offset within this buffer's backing array of the first element of
+         * the buffer  (optional operation).
+         * <p>
+         * Invoke the hasArray method before invoking this method in order to ensure that
+         * this buffer has an accessible backing array.
+         * @returns The offset into the backing array where index zero starts.
+         * @throws ReadOnlyBufferException if this Buffer is read only.
+         * @throws UnsupportedOperationException if the underlying store has no array.
+         */
+        virtual std::size_t arrayOffset()
+            throw( decaf::lang::exceptions::UnsupportedOperationException,
+                   ReadOnlyBufferException ) = 0;
+
+        /**
+         * Creates a new, read-only float buffer that shares this buffer's content.
+         * <p>
+         * The content of the new buffer will be that of this buffer. Changes to this
+         * buffer's content will be visible in the new buffer; the new buffer itself,
+         * however, will be read-only and will not allow the shared content to be
+         * modified. The two buffers' position, limit, and mark values will be
+         * independent.
+         * <p>
+         * If this buffer is itself read-only then this method behaves in exactly the
+         * same way as the duplicate method.
+         * <p>
+         * The new buffer's capacity, limit, position, and mark values will be
+         * identical to those of this buffer.
+         * @return The new, read-only float buffer which the caller then owns.
+         */
+        virtual FloatBuffer* asReadOnlyBuffer() const = 0;
+
+        /**
+         * Compacts this buffer
+         * <p>
+         * The bytes between the buffer's current position and its limit, if any, are
+         * copied to the beginning of the buffer. That is, the byte at index
+         * p = position() is copied to index zero, the byte at index p + 1 is copied
+         * to index one, and so forth until the byte at index limit() - 1 is copied
+         * to index n = limit() - 1 - p. The buffer's position is then set to n+1 and
+         * its limit is set to its capacity. The mark, if defined, is discarded.
+         * <p>
+         * The buffer's position is set to the number of bytes copied, rather than to
+         * zero, so that an invocation of this method can be followed immediately by
+         * an invocation of another relative put method.
+         * @returns a reference to this FloatBuffer
+         * @throws ReadOnlyBufferException - If this buffer is read-only
+         */
+        virtual FloatBuffer& compact() throw( ReadOnlyBufferException ) = 0;
+
+        /**
+         * Creates a new float buffer that shares this buffer's content.
+         * <p>
+         * The content of the new buffer will be that of this buffer. Changes to this
+         * buffer's content will be visible in the new buffer, and vice versa; the two
+         * buffers' position, limit, and mark values will be independent.
+         * <p>
+         * The new buffer's capacity, limit, position, and mark values will be identical
+         * to those of this buffer. The new buffer will be read-only if, and only if,
+         * this buffer is read-only.
+         * @returns a new float Buffer which the caller owns.
+         */
+        virtual FloatBuffer* duplicate() = 0;
+
+        /**
+         * Relative get method. Reads the value at this buffer's current position,
+         * and then increments the position.
+         * @returns the float at the current position
+         * @throws BufferUnderflowException if there no more data to return
+         */
+        virtual float get() throw ( BufferUnderflowException ) = 0;
+
+        /**
+         * Absolute get method. Reads the value at the given index.
+         * @param index - the index in the Buffer where the float is to be read
+         * @returns the float that is located at the given index
+         * @throws IndexOutOfBoundsException - If index is not smaller than the
+         * buffer's limit
+         */
+        virtual float get( std::size_t index ) const
+            throw ( lang::exceptions::IndexOutOfBoundsException ) = 0;
+
+        /**
+         * Relative bulk get method.
+         * <p>
+         * This method transfers values from this buffer into the given destination
+         * vector. An invocation of this method of the form src.get(a) behaves in
+         * exactly the same way as the invocation.  The vector must be sized to the
+         * amount of data that is to be read, that is to say, the caller should call
+         * buffer.resize( N ) before calling this get method.
+         * @returns a reference to this Buffer
+         * @throws BufferUnderflowException - If there are fewer than length floats
+         * remaining in this buffer
+         */
+        FloatBuffer& get( std::vector<float> buffer )
+            throw ( BufferUnderflowException );
+
+        /**
+         * Relative bulk get method.
+         * <p>
+         * This method transfers floats from this buffer into the given destination array.
+         * If there are fewer floats remaining in the buffer than are required to satisfy
+         * the request, that is, if length > remaining(), then no bytes are transferred
+         * and a BufferUnderflowException is thrown.
+         * <p>
+         * Otherwise, this method copies length floats from this buffer into the given
+         * array, starting at the current position of this buffer and at the given offset
+         * in the array. The position of this buffer is then incremented by length.
+         * <p>
+         * @param buffer - pointer to an allocated buffer to fill
+         * @param offset - position in the buffer to start filling
+         * @param length - amount of data to put in the passed buffer
+         * @returns a reference to this Buffer
+         * @throws BufferUnderflowException - If there are fewer than length floats
+         * remaining in this buffer
+         * @throws NullPointerException if the passed buffer is null.
+         */
+        FloatBuffer& get( float* buffer, std::size_t offset, std::size_t length )
+            throw( BufferUnderflowException,
+                   lang::exceptions::NullPointerException );
+
+        /**
+         * Tells whether or not this buffer is backed by an accessible float array.
+         * If this method returns true then the array and arrayOffset methods may safely
+         * be invoked.  Subclasses should override this method if they do not have a
+         * backing array as this class always returns true.
+         * @returns true if, and only if, this buffer is backed by an array and is not
+         * read-only
+         */
+        virtual bool hasArray() const = 0;
+
+        /**
+         * This method transfers the floats remaining in the given source buffer into
+         * this buffer. If there are more floats remaining in the source buffer than in
+         * this buffer, that is, if src.remaining() > remaining(), then no floats are
+         * transferred and a BufferOverflowException is thrown.
+         * <p>
+         * Otherwise, this method copies n = src.remaining() floats from the given
+         * buffer into this buffer, starting at each buffer's current position. The
+         * positions of both buffers are then incremented by n.
+         * @param src - the buffer to take floats from an place in this one.
+         * @returns a reference to this buffer
+         * @throws BufferOverflowException - If there is insufficient space in this
+         * buffer for the remaining floats in the source buffer
+         * @throws IllegalArgumentException - If the source buffer is this buffer
+         * @throws ReadOnlyBufferException - If this buffer is read-only
+         */
+        FloatBuffer& put( FloatBuffer& src )
+            throw( BufferOverflowException, ReadOnlyBufferException,
+                   lang::exceptions::IllegalArgumentException );
+
+        /**
+         * This method transfers floats into this buffer from the given source array.
+         * If there are more floats to be copied from the array than remain in this buffer,
+         * that is, if length > remaining(), then no floats are transferred and a
+         * BufferOverflowException is thrown.
+         * <p>
+         * Otherwise, this method copies length bytes from the given array into this
+         * buffer, starting at the given offset in the array and at the current position
+         * of this buffer. The position of this buffer is then incremented by length.
+         * @param buffer- The array from which floats are to be read
+         * @param offset- The offset within the array of the first float to be read;
+         * @param length - The number of floats to be read from the given array
+         * @returns a reference to this buffer
+         * @throws BufferOverflowException - If there is insufficient space in this buffer
+         * @throws ReadOnlyBufferException - If this buffer is read-only
+         * @throws NullPointerException if the passed buffer is null.
+         */
+        FloatBuffer& put( const float* buffer, std::size_t offset, std::size_t length )
+            throw( BufferOverflowException, ReadOnlyBufferException,
+                   lang::exceptions::NullPointerException );
+
+        /**
+         * This method transfers the entire content of the given source floats array into
+         * this buffer.  This is the same as calling put( &buffer[0], 0, buffer.size()
+         * @pparam buffer - The buffer whose contents are copied to this FloatBuffer
+         * @returns a reference to this buffer
+         * @throws BufferOverflowException - If there is insufficient space in this buffer
+         * @throws ReadOnlyBufferException - If this buffer is read-only
+         */
+        FloatBuffer& put( std::vector<float>& buffer )
+            throw( BufferOverflowException, ReadOnlyBufferException );
+
+        /**
+         * Writes the given floats into this buffer at the current position, and then
+         * increments the position.
+         * @param value - the floats value to be written
+         * @returns a reference to this buffer
+         * @throws BufferOverflowException - If this buffer's current position is not
+         * smaller than its limit
+         * @throws ReadOnlyBufferException - If this buffer is read-only
+         */
+        virtual FloatBuffer& put( float value )
+            throw( BufferOverflowException, ReadOnlyBufferException ) = 0;
+
+        /**
+         * Writes the given floats into this buffer at the given index.
+         * @param index - position in the Buffer to write the data
+         * @param value - the floats to write.
+         * @returns a reference to this buffer
+         * @throws IndexOutOfBoundsException - If index greater than the buffer's limit
+         * minus the size of the type being written.
+         * @throws ReadOnlyBufferException - If this buffer is read-only
+         */
+        virtual FloatBuffer& put( std::size_t index, float value )
+            throw( lang::exceptions::IndexOutOfBoundsException,
+                   ReadOnlyBufferException ) = 0;
+
+        /**
+         * Creates a new FloatBuffer whose content is a shared subsequence of this
+         * buffer's content.  The content of the new buffer will start at this buffer's
+         * current position. Changes to this buffer's content will be visible in the new
+         * buffer, and vice versa; the two buffers' position, limit, and mark values will
+         * be independent.
+         * <p>
+         * The new buffer's position will be zero, its capacity and its limit will be the
+         * number of bytes remaining in this buffer, and its mark will be undefined. The
+         * new buffer will be read-only if, and only if, this buffer is read-only.
+         * @returns the newly create FloatBuffer which the caller owns.
+         */
+        virtual FloatBuffer* slice() const = 0;
+
+    public:  // Comparable
+
+        /**
+         * Compares this object with the specified object for order. Returns a
+         * negative integer, zero, or a positive integer as this object is less
+         * than, equal to, or greater than the specified object.
+         * @param value - the Object to be compared.
+         * @returns a negative integer, zero, or a positive integer as this
+         * object is less than, equal to, or greater than the specified object.
+         */
+        virtual int compareTo( const FloatBuffer& value ) const;
+
+        /**
+         * @return true if this value is considered equal to the passed value.
+         */
+        virtual bool equals( const FloatBuffer& value ) const;
+
+        /**
+         * Compares equality between this object and the one passed.
+         * @param value - the value to be compared to this one.
+         * @return true if this object is equal to the one passed.
+         */
+        virtual bool operator==( const FloatBuffer& value ) const;
+
+        /**
+         * Compares this object to another and returns true if this object
+         * is considered to be less than the one passed.  This
+         * @param value - the value to be compared to this one.
+         * @return true if this object is equal to the one passed.
+         */
+        virtual bool operator<( const FloatBuffer& value ) const;
+
+    public:   // Statics
+
+        /**
+         * Allocates a new Double buffer.
+         * <p>
+         * The new buffer's position will be zero, its limit will be its capacity, and
+         * its mark will be undefined. It will have a backing array, and its array offset
+         * will be zero.
+         * @param capacity - The size of the Double buffer in floats
+         * @returns the FloatBuffer that was allocated, caller owns.
+         */
+        static FloatBuffer* allocate( std::size_t capacity );
+
+        /**
+         * Wraps the passed buffer with a new FloatBuffer.
+         * <p>
+         * The new buffer will be backed by the given float array; that is, modifications
+         * to the buffer will cause the array to be modified and vice versa. The new
+         * buffer's capacity will be array.length, its position will be offset, its limit
+         * will be offset + length, and its mark will be undefined. Its backing array
+         * will be the given array, and its array offset will be zero.
+         * @param buffer - The array that will back the new buffer
+         * @param offset - The offset of the subarray to be used
+         * @param length - The length of the subarray to be used
+         * @returns a new FloatBuffer that is backed by buffer, caller owns.
+         */
+        static FloatBuffer* wrap( float* array, std::size_t offset, std::size_t length )
+            throw( lang::exceptions::NullPointerException );
+
+        /**
+         * Wraps the passed STL float Vector in a FloatBuffer.
+         * <p>
+         * The new buffer will be backed by the given float array; modifications to the
+         * buffer will cause the array to be modified and vice versa. The new buffer's
+         * capacity and limit will be buffer.size(), its position will be zero, and its
+         * mark will be undefined. Its backing array will be the given array, and its
+         * array offset will be zero.
+         * @param buffer - The vector that will back the new buffer, the vector must
+         * have been sized to the desired size already by calling vector.resize( N ).
+         * @returns a new FloatBuffer that is backed by buffer, caller owns.
+         */
+        static FloatBuffer* wrap( std::vector<float>& buffer );
+
+    };
+
+}}
+
+#endif /*_DECAF_NIO_FLOATBUFFER_H_*/