417 lines
13 KiB
C#
417 lines
13 KiB
C#
// /**
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// ********
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// *
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// * ORIGINAL CODE BASE IS Copyright (C) 2006-2010 by Alphons van der Heijden
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// * The code was donated on 4/28/2010 by Alphons van der Heijden
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// * To Brandon 'Dimentox Travanti' Husbands & Malcolm J. Kudra, who in turn License under the GPLv2.
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// * In agreement with Alphons van der Heijden's wishes.
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// *
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// * The community would like to thank Alphons for all of his hard work, blood sweat and tears.
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// * Without his work the community would be stuck with crappy editors.
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// *
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// * The source code in this file ("Source Code") is provided by The LSLEditor Group
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// * to you under the terms of the GNU General Public License, version 2.0
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// * ("GPL"), unless you have obtained a separate licensing agreement
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// * ("Other License"), formally executed by you and The LSLEditor Group. Terms of
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// * the GPL can be found in the gplv2.txt document.
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// *
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// ********
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// * GPLv2 Header
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// ********
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// * LSLEditor, a External editor for the LSL Language.
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// * Copyright (C) 2010 The LSLEditor Group.
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//
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// * This program is free software; you can redistribute it and/or
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// * modify it under the terms of the GNU General Public License
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// * as published by the Free Software Foundation; either version 2
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// * of the License, or (at your option) any later version.
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// *
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// * This program is distributed in the hope that it will be useful,
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// * but WITHOUT ANY WARRANTY; without even the implied warranty of
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// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// * GNU General Public License for more details.
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// *
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// * You should have received a copy of the GNU General Public License
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// * along with this program; if not, write to the Free Software
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// * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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// ********
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// *
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// * The above copyright notice and this permission notice shall be included in all
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// * copies or substantial portions of the Software.
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// *
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// ********
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// */
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using System;
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using System.Diagnostics.CodeAnalysis;
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using System.Text.RegularExpressions;
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namespace LSLEditor
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{
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/// <summary>
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/// This part of the SecondLife class defines the Float struct.
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/// </summary>
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[SuppressMessage("StyleCop.CSharp.DocumentationRules", "SA1642:ConstructorSummaryDocumentationMustBeginWithStandardText", Justification = "Reviewed.")]
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public partial class SecondLife
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{
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/// <summary>
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/// A struct for Float objects.
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/// </summary>
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public struct Float
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{
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/// <summary>
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/// Stores the Float value.
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/// </summary>
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private object objValue;
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/// <summary>
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/// Gets or sets the value of the Float.
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/// </summary>
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/// <value>Gets or sets the objValue data member.</value>
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private Double value
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{
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get
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{
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if (objValue == null) {
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objValue = (Double)0;
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}
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return (Double)objValue;
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}
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set
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{
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objValue = value;
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}
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}
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/// <summary>
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/// Initialises a new instance of the <see cref="Float"/> struct.
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/// </summary>
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/// <param name="a"></param>
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public Float(Double a)
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{
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this.objValue = a;
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}
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#region public Float(string s)
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/// <summary>
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/// Initialises a new instance of the <see cref="Float"/> struct.
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/// </summary>
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/// <param name="s"></param>
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public Float(string s)
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{
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Regex r = new Regex(
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@"\A[ ]*(?<sign>[+-]?)
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(?:
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(?:
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0x
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(?:
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(?:
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(?<int>[0-9a-f]*)
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(?:
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(?:\.
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(?<frac>[0-9a-f]*)
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)
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)
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)
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(?:
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(?:p
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(?<exp>[-+]?[\d]*)
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)
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)
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)
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)
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(?<dec>
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[\d]*[.]?[\d]*
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(?:
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(?:
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e[+-]?[\d]*
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)
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)
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)
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)",
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RegexOptions.IgnoreCase | RegexOptions.IgnorePatternWhitespace);
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Match m = r.Match(s);
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Double mantissa = 0.0;
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if (r.Match(s).Groups["dec"].Value.Length > 0) {
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mantissa = Convert.ToDouble(r.Match(s).Groups["dec"].Value);
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}
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if (m.Groups["int"].Success) {
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if (m.Groups["int"].Value.Length > 0) {
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////System.Console.WriteLine("i:\t" + m.Groups["int"].Value);
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mantissa = Convert.ToInt64(m.Groups["int"].Value, 16);
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}
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if (m.Groups["frac"].Value.Length > 0) {
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////System.Console.WriteLine("f:\t"+m.Groups["frac"].Value);
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mantissa += Convert.ToInt64(m.Groups["frac"].Value, 16) / Math.Pow(16.0, m.Groups["frac"].Value.Length);
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}
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if (m.Groups["exp"].Value.Length > 0) {
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////System.Console.WriteLine("e:\t" + m.Groups["exp"].Value);
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mantissa *= Math.Pow(2.0, Convert.ToInt64(m.Groups["exp"].Value, 10));
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}
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}
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if (m.Groups["sign"].Value == "-") {
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this.objValue = -mantissa;
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} else {
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this.objValue = mantissa;
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}
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}
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#endregion
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/// <summary>
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/// No idea of the intention here ;-).
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/// </summary>
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/// <returns>The Float value as a 32 bit number.</returns>
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public override int GetHashCode()
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{
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return (int)this.value % System.Int32.MaxValue;
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}
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/// <summary>
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/// Converts the Float to a string representation.
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/// </summary>
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/// <returns>String representation of the Float.</returns>
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public override string ToString()
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{
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return string.Format("{0:0.000000}", this.value);
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}
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/// <summary>
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/// Converts the Float to a string representation.
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/// </summary>
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/// <param name="x"></param>
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/// <returns>String representation of the Float.</returns>
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public static explicit operator String(Float x)
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{
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return x.ToString();
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}
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/// <summary>
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/// Converts the Float to a string representation.
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/// </summary>
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/// <param name="x"></param>
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/// <returns>String representation of the Float.</returns>
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public static implicit operator Double(Float x)
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{
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return x.value;
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}
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////public static implicit operator integer(Float x)
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////{
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//// return (int)x.value;
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////}
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/// <summary>
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/// Creates a new instance of a Float from a string.
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/// </summary>
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/// <param name="s"></param>
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/// <returns>A new Float instance.</returns>
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public static explicit operator Float(string s)
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{
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return new Float(s);
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}
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/// <summary>
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/// Creates a new instance of a Float from a String.
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/// </summary>
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/// <param name="s"></param>
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/// <returns>A new Float instance.</returns>
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public static explicit operator Float(String s)
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{
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return new Float(s.ToString());
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}
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/// <summary>
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/// Creates a new instance of a Float from an Int32 .
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/// </summary>
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/// <param name="x"></param>
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/// <returns>A new Float instance.</returns>
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public static implicit operator Float(Int32 x)
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{
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return new Float((Double)x);
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}
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/// <summary>
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/// Creates a new instance of a Float from a long.
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/// </summary>
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/// <param name="x"></param>
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/// <returns>A new Float instance.</returns>
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public static implicit operator Float(long x)
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{
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return new Float((int)(uint)x); // 6 jan 2008 , does this work????
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}
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/// <summary>
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/// Creates a new instance of a Float from a Double.
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/// </summary>
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/// <param name="x"></param>
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/// <returns>A new Float instance.</returns>
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public static implicit operator Float(Double x)
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{
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return new Float(x);
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}
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/// <summary>
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/// Creates a new instance of a Float from an integer type.
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/// </summary>
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/// <param name="x"></param>
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/// <returns>A new Float instance.</returns>
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public static implicit operator Float(integer x)
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{
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return new Float((Double)x);
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}
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/// <summary>
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/// Calculates the result of multiplying a and b.
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/// </summary>
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/// <param name="a"></param>
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/// <param name="b"></param>
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/// <returns>The product of a and b.</returns>
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public static Float operator *(Float a, Float b)
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{
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return new Float(a.value * b.value);
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}
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/// <summary>
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/// Calculates the result of dividing a by b.
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/// </summary>
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/// <param name="a"></param>
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/// <param name="b"></param>
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/// <returns>The result of dividing a by b.</returns>
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public static Float operator /(Float a, Float b)
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{
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return new Float(a.value / b.value);
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}
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/// <summary>
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/// Calculates the result of incrementing the Float's value.
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/// </summary>
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/// <param name="a"></param>
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/// <returns>The result of incrementing the Float's value.</returns>
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public static Float operator ++(Float a)
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{
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return new Float(a.value + 1.0);
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}
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/// <summary>
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/// Calculates the result of decrementing the Float's value.
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/// </summary>
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/// <param name="a"></param>
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/// <returns>The result of decrementing the Float's value.</returns>
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public static Float operator --(Float a)
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{
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return new Float(a.value - 1.0);
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}
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/// <summary>
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/// Calculates the result of adding a to b.
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/// </summary>
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/// <param name="a"></param>
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/// <param name="b"></param>
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/// <returns>The result of adding a to b.</returns>
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public static Float operator +(Float a, Float b)
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{
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return new Float(a.value + b.value);
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}
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/// <summary>
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/// Calculates the result of subtracting a from b.
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/// </summary>
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/// <param name="a"></param>
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/// <param name="b"></param>
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/// <returns>The result of subtracting a from b.</returns>
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public static Float operator -(Float a, Float b)
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{
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return new Float(a.value - b.value);
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}
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/// <summary>
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/// Casts the Float to a boolean.
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/// </summary>
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/// <param name="a"></param>
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/// <returns>A boolean value.</returns>
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public static explicit operator bool(Float a)
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{
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return Math.Abs(a.value) >= Double.Epsilon;
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}
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/// <summary>
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/// Defines a boolean true value.
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/// </summary>
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/// <param name="a"></param>
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/// <returns>A boolean indicating whether the value is considered true.</returns>
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public static bool operator true(Float a)
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{
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return Math.Abs(a.value) >= Double.Epsilon;
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}
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/// <summary>
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/// Defines a boolean false value.
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/// </summary>
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/// <param name="a"></param>
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/// <returns>A boolean indicating whether the value is considered false.</returns>
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public static bool operator false(Float a)
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{
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return Math.Abs(a.value) < Double.Epsilon;
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}
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/// <summary>
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/// Defines the equality operator.
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/// </summary>
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/// <param name="x">First operand.</param>
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/// <param name="y">Second operand.</param>
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/// <returns>A boolean value indicating equality.</returns>
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public static bool operator ==(Float x, Float y)
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{
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return Math.Abs(x.value - y.value) < Double.Epsilon;
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}
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/// <summary>
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/// Defines the inequality operator.
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/// </summary>
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/// <param name="x">First operand.</param>
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/// <param name="y">Second operand.</param>
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/// <returns>A boolean value indicating inequality.</returns>
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public static bool operator !=(Float x, Float y)
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{
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return !(x == y);
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}
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/// <summary>
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/// Compares two Floats.
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/// </summary>
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/// <param name="a">First operand.</param>
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/// <param name="b">Second operand.</param>
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/// <returns>An integer (-1, 0, or 1), indicating whether the first item is less than, same as, or greater than the second.</returns>
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public static int Compare(Float a, Float b)
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{
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int intResult = 0;
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if (a.value < b.value) {
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intResult = -1;
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} else if (a.value > b.value) {
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intResult = 1;
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}
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return intResult;
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}
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/// <summary>
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/// Defines the Equals operator.
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/// </summary>
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/// <param name="o"></param>
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/// <returns>A boolean value indicating equality.</returns>
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public override bool Equals(object o)
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{
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bool blnResult;
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try {
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blnResult = (bool)(this == (Float)o);
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} catch {
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blnResult = false;
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}
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return blnResult;
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}
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}
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}
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}
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