00001 /******************************************************************************* 00002 00003 @file ConduitStyle.d 00004 00005 Copyright (c) 2004 Kris Bell 00006 00007 This software is provided 'as-is', without any express or implied 00008 warranty. In no event will the authors be held liable for damages 00009 of any kind arising from the use of this software. 00010 00011 Permission is hereby granted to anyone to use this software for any 00012 purpose, including commercial applications, and to alter it and/or 00013 redistribute it freely, subject to the following restrictions: 00014 00015 1. The origin of this software must not be misrepresented; you must 00016 not claim that you wrote the original software. If you use this 00017 software in a product, an acknowledgment within documentation of 00018 said product would be appreciated but is not required. 00019 00020 2. Altered source versions must be plainly marked as such, and must 00021 not be misrepresented as being the original software. 00022 00023 3. This notice may not be removed or altered from any distribution 00024 of the source. 00025 00026 4. Derivative works are permitted, but they must carry this notice 00027 in full and credit the original source. 00028 00029 00030 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 00031 00032 00033 @version Initial version, March 2004 00034 @author Kris 00035 00036 00037 *******************************************************************************/ 00038 00039 module mango.io.ConduitStyle; 00040 00041 00042 /******************************************************************************* 00043 00044 Defines how a Conduit should be opened. This is typically subsumed 00045 by a subclass. 00046 00047 *******************************************************************************/ 00048 00049 class ConduitStyle 00050 { 00051 /*********************************************************************** 00052 00053 Declare the basic styles for a Conduit 00054 00055 ***********************************************************************/ 00056 00057 enum Access { 00058 Read = 0x01, 00059 Write = 0x02, 00060 ReadWrite = 0x03, 00061 }; 00062 00063 private Access m_access; 00064 00065 /*********************************************************************** 00066 00067 Expose common instances of ConduitStyle 00068 00069 ***********************************************************************/ 00070 00071 static ConduitStyle Read, 00072 Write, 00073 ReadWrite; 00074 00075 /*********************************************************************** 00076 00077 Setup common instances of ConduitStyle 00078 00079 ***********************************************************************/ 00080 00081 static this () 00082 { 00083 Read = new ConduitStyle (Access.Read); 00084 Write = new ConduitStyle (Access.Write); 00085 ReadWrite = new ConduitStyle (Access.ReadWrite); 00086 } 00087 00088 /*********************************************************************** 00089 00090 Construct a ConduitStyle with the given access 00091 00092 ***********************************************************************/ 00093 00094 this (Access access) 00095 { 00096 m_access = access; 00097 } 00098 00099 /*********************************************************************** 00100 00101 Return the access attribute of this ConduitStyle 00102 00103 ***********************************************************************/ 00104 00105 Access access() 00106 { 00107 return m_access; 00108 } 00109 }