diff options
Diffstat (limited to 'lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangBitstr.java')
| -rw-r--r-- | lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangBitstr.java | 264 |
1 files changed, 132 insertions, 132 deletions
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangBitstr.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangBitstr.java index 8cb4e0e685..7724892bd3 100644 --- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangBitstr.java +++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangBitstr.java @@ -1,19 +1,19 @@ /* * %CopyrightBegin% - * + * * Copyright Ericsson AB 2007-2009. All Rights Reserved. - * + * * The contents of this file are subject to the Erlang Public License, * Version 1.1, (the "License"); you may not use this file except in * compliance with the License. You should have received a copy of the * Erlang Public License along with this software. If not, it can be * retrieved online at http://www.erlang.org/. - * + * * Software distributed under the License is distributed on an "AS IS" * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See * the License for the specific language governing rights and limitations * under the License. - * + * * %CopyrightEnd% */ package com.ericsson.otp.erlang; @@ -35,249 +35,249 @@ public class OtpErlangBitstr extends OtpErlangObject { /** * Create a bitstr from a byte array - * + * * @param bin - * the array of bytes from which to create the bitstr. + * the array of bytes from which to create the bitstr. */ public OtpErlangBitstr(final byte[] bin) { - this.bin = new byte[bin.length]; - System.arraycopy(bin, 0, this.bin, 0, bin.length); - pad_bits = 0; + this.bin = new byte[bin.length]; + System.arraycopy(bin, 0, this.bin, 0, bin.length); + pad_bits = 0; } /** * Create a bitstr with pad bits from a byte array. - * + * * @param bin - * the array of bytes from which to create the bitstr. + * the array of bytes from which to create the bitstr. * @param pad_bits - * the number of unused bits in the low end of the last byte. + * the number of unused bits in the low end of the last byte. */ public OtpErlangBitstr(final byte[] bin, final int pad_bits) { - this.bin = new byte[bin.length]; - System.arraycopy(bin, 0, this.bin, 0, bin.length); - this.pad_bits = pad_bits; + this.bin = new byte[bin.length]; + System.arraycopy(bin, 0, this.bin, 0, bin.length); + this.pad_bits = pad_bits; - check_bitstr(this.bin, this.pad_bits); + check_bitstr(this.bin, this.pad_bits); } private void check_bitstr(final byte[] abin, final int a_pad_bits) { - if (a_pad_bits < 0 || 7 < a_pad_bits) { - throw new java.lang.IllegalArgumentException( - "Padding must be in range 0..7"); - } - if (a_pad_bits != 0 && abin.length == 0) { - throw new java.lang.IllegalArgumentException( - "Padding on zero length bitstr"); - } - if (abin.length != 0) { - // Make sure padding is zero - abin[abin.length - 1] &= ~((1 << a_pad_bits) - 1); - } + if (a_pad_bits < 0 || 7 < a_pad_bits) { + throw new java.lang.IllegalArgumentException( + "Padding must be in range 0..7"); + } + if (a_pad_bits != 0 && abin.length == 0) { + throw new java.lang.IllegalArgumentException( + "Padding on zero length bitstr"); + } + if (abin.length != 0) { + // Make sure padding is zero + abin[abin.length - 1] &= ~((1 << a_pad_bits) - 1); + } } /** * Create a bitstr from a stream containing a bitstr encoded in Erlang * external format. - * + * * @param buf - * the stream containing the encoded bitstr. - * + * the stream containing the encoded bitstr. + * * @exception OtpErlangDecodeException - * if the buffer does not contain a valid external - * representation of an Erlang bitstr. + * if the buffer does not contain a valid external + * representation of an Erlang bitstr. */ public OtpErlangBitstr(final OtpInputStream buf) - throws OtpErlangDecodeException { - final int pbs[] = { 0 }; // This is ugly just to get a value-result - // parameter - bin = buf.read_bitstr(pbs); - pad_bits = pbs[0]; + throws OtpErlangDecodeException { + final int pbs[] = { 0 }; // This is ugly just to get a value-result + // parameter + bin = buf.read_bitstr(pbs); + pad_bits = pbs[0]; - check_bitstr(bin, pad_bits); + check_bitstr(bin, pad_bits); } /** * Create a bitstr from an arbitrary Java Object. The object must implement * java.io.Serializable or java.io.Externalizable. - * + * * @param o - * the object to serialize and create this bitstr from. + * the object to serialize and create this bitstr from. */ public OtpErlangBitstr(final Object o) { - try { - bin = toByteArray(o); - pad_bits = 0; - } catch (final IOException e) { - throw new java.lang.IllegalArgumentException( - "Object must implement Serializable"); - } + try { + bin = toByteArray(o); + pad_bits = 0; + } catch (final IOException e) { + throw new java.lang.IllegalArgumentException( + "Object must implement Serializable"); + } } private static byte[] toByteArray(final Object o) - throws java.io.IOException { + throws java.io.IOException { - if (o == null) { - return null; - } + if (o == null) { + return null; + } - /* need to synchronize use of the shared baos */ - final java.io.ByteArrayOutputStream baos = new ByteArrayOutputStream(); - final java.io.ObjectOutputStream oos = new java.io.ObjectOutputStream( - baos); + /* need to synchronize use of the shared baos */ + final java.io.ByteArrayOutputStream baos = new ByteArrayOutputStream(); + final java.io.ObjectOutputStream oos = new java.io.ObjectOutputStream( + baos); - oos.writeObject(o); - oos.flush(); + oos.writeObject(o); + oos.flush(); - return baos.toByteArray(); + return baos.toByteArray(); } private static Object fromByteArray(final byte[] buf) { - if (buf == null) { - return null; - } + if (buf == null) { + return null; + } - try { - final java.io.ByteArrayInputStream bais = new java.io.ByteArrayInputStream( - buf); - final java.io.ObjectInputStream ois = new java.io.ObjectInputStream( - bais); - return ois.readObject(); - } catch (final java.lang.ClassNotFoundException e) { - } catch (final java.io.IOException e) { - } + try { + final java.io.ByteArrayInputStream bais = new java.io.ByteArrayInputStream( + buf); + final java.io.ObjectInputStream ois = new java.io.ObjectInputStream( + bais); + return ois.readObject(); + } catch (final java.lang.ClassNotFoundException e) { + } catch (final java.io.IOException e) { + } - return null; + return null; } /** * Get the byte array from a bitstr, padded with zero bits in the little end * of the last byte. - * + * * @return the byte array containing the bytes for this bitstr. */ public byte[] binaryValue() { - return bin; + return bin; } /** * Get the size in whole bytes of the bitstr, rest bits in the last byte not * counted. - * + * * @return the number of bytes contained in the bintstr. */ public int size() { - if (pad_bits == 0) { - return bin.length; - } - if (bin.length == 0) { - throw new java.lang.IllegalStateException("Impossible length"); - } - return bin.length - 1; + if (pad_bits == 0) { + return bin.length; + } + if (bin.length == 0) { + throw new java.lang.IllegalStateException("Impossible length"); + } + return bin.length - 1; } /** * Get the number of pad bits in the last byte of the bitstr. The pad bits * are zero and in the little end. - * + * * @return the number of pad bits in the bitstr. */ public int pad_bits() { - return pad_bits; + return pad_bits; } /** * Get the java Object from the bitstr. If the bitstr contains a serialized * Java object, then this method will recreate the object. - * - * + * + * * @return the java Object represented by this bitstr, or null if the bitstr * does not represent a Java Object. */ public Object getObject() { - if (pad_bits != 0) { - return null; - } - return fromByteArray(bin); + if (pad_bits != 0) { + return null; + } + return fromByteArray(bin); } /** * Get the string representation of this bitstr object. A bitstr is printed * as #Bin<N>, where N is the number of bytes contained in the object * or #bin<N-M> if there are M pad bits. - * + * * @return the Erlang string representation of this bitstr. */ @Override public String toString() { - if (pad_bits == 0) { - return "#Bin<" + bin.length + ">"; - } - if (bin.length == 0) { - throw new java.lang.IllegalStateException("Impossible length"); - } - return "#Bin<" + bin.length + "-" + pad_bits + ">"; + if (pad_bits == 0) { + return "#Bin<" + bin.length + ">"; + } + if (bin.length == 0) { + throw new java.lang.IllegalStateException("Impossible length"); + } + return "#Bin<" + bin.length + "-" + pad_bits + ">"; } /** * Convert this bitstr to the equivalent Erlang external representation. - * + * * @param buf - * an output stream to which the encoded bitstr should be - * written. + * an output stream to which the encoded bitstr should be + * written. */ @Override public void encode(final OtpOutputStream buf) { - buf.write_bitstr(bin, pad_bits); + buf.write_bitstr(bin, pad_bits); } /** * Determine if two bitstrs are equal. Bitstrs are equal if they have the * same byte length and tail length, and the array of bytes is identical. - * + * * @param o - * the bitstr to compare to. - * + * the bitstr to compare to. + * * @return true if the bitstrs contain the same bits, false otherwise. */ @Override public boolean equals(final Object o) { - if (!(o instanceof OtpErlangBitstr)) { - return false; - } + if (!(o instanceof OtpErlangBitstr)) { + return false; + } - final OtpErlangBitstr that = (OtpErlangBitstr) o; - if (pad_bits != that.pad_bits) { - return false; - } + final OtpErlangBitstr that = (OtpErlangBitstr) o; + if (pad_bits != that.pad_bits) { + return false; + } - final int len = bin.length; - if (len != that.bin.length) { - return false; - } + final int len = bin.length; + if (len != that.bin.length) { + return false; + } - for (int i = 0; i < len; i++) { - if (bin[i] != that.bin[i]) { - return false; // early exit - } - } + for (int i = 0; i < len; i++) { + if (bin[i] != that.bin[i]) { + return false; // early exit + } + } - return true; + return true; } - + @Override protected int doHashCode() { - OtpErlangObject.Hash hash = new OtpErlangObject.Hash(15); - hash.combine(bin); - hash.combine(pad_bits); - return hash.valueOf(); + final OtpErlangObject.Hash hash = new OtpErlangObject.Hash(15); + hash.combine(bin); + hash.combine(pad_bits); + return hash.valueOf(); } - + @Override public Object clone() { - final OtpErlangBitstr that = (OtpErlangBitstr) super.clone(); - that.bin = bin.clone(); - that.pad_bits = pad_bits; - return that; + final OtpErlangBitstr that = (OtpErlangBitstr) super.clone(); + that.bin = bin.clone(); + that.pad_bits = pad_bits; + return that; } } |