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comparison mayachemtools/docs/modules/html/code/ObjectProperty.html @ 0:73ae111cf86f draft
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| author | deepakjadmin |
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| date | Wed, 20 Jan 2016 11:55:01 -0500 |
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| 1 <html> | |
| 2 <head> | |
| 3 <title>MayaChemTools:Code:ObjectProperty.pm</title> | |
| 4 <meta http-equiv="content-type" content="text/html;charset=utf-8"> | |
| 5 <link rel="stylesheet" type="text/css" href="../../../css/MayaChemToolsCode.css"> | |
| 6 </head> | |
| 7 <body leftmargin="20" rightmargin="20" topmargin="10" bottommargin="10"> | |
| 8 <br/> | |
| 9 <center> | |
| 10 <a href="http://www.mayachemtools.org" title="MayaChemTools Home"><img src="../../../images/MayaChemToolsLogo.gif" border="0" alt="MayaChemTools"></a> | |
| 11 </center> | |
| 12 <br/> | |
| 13 <pre> | |
| 14 <a name="package-ObjectProperty-"></a> 1 <span class="k">package </span><span class="i">ObjectProperty</span><span class="sc">;</span> | |
| 15 2 <span class="c">#</span> | |
| 16 3 <span class="c"># $RCSfile: ObjectProperty.pm,v $</span> | |
| 17 4 <span class="c"># $Date: 2015/02/28 20:47:18 $</span> | |
| 18 5 <span class="c"># $Revision: 1.25 $</span> | |
| 19 6 <span class="c">#</span> | |
| 20 7 <span class="c"># Author: Manish Sud <msud@san.rr.com></span> | |
| 21 8 <span class="c">#</span> | |
| 22 9 <span class="c"># Copyright (C) 2015 Manish Sud. All rights reserved.</span> | |
| 23 10 <span class="c">#</span> | |
| 24 11 <span class="c"># This file is part of MayaChemTools.</span> | |
| 25 12 <span class="c">#</span> | |
| 26 13 <span class="c"># MayaChemTools is free software; you can redistribute it and/or modify it under</span> | |
| 27 14 <span class="c"># the terms of the GNU Lesser General Public License as published by the Free</span> | |
| 28 15 <span class="c"># Software Foundation; either version 3 of the License, or (at your option) any</span> | |
| 29 16 <span class="c"># later version.</span> | |
| 30 17 <span class="c">#</span> | |
| 31 18 <span class="c"># MayaChemTools is distributed in the hope that it will be useful, but without</span> | |
| 32 19 <span class="c"># any warranty; without even the implied warranty of merchantability of fitness</span> | |
| 33 20 <span class="c"># for a particular purpose. See the GNU Lesser General Public License for more</span> | |
| 34 21 <span class="c"># details.</span> | |
| 35 22 <span class="c">#</span> | |
| 36 23 <span class="c"># You should have received a copy of the GNU Lesser General Public License</span> | |
| 37 24 <span class="c"># along with MayaChemTools; if not, see <http://www.gnu.org/licenses/> or</span> | |
| 38 25 <span class="c"># write to the Free Software Foundation Inc., 59 Temple Place, Suite 330,</span> | |
| 39 26 <span class="c"># Boston, MA, 02111-1307, USA.</span> | |
| 40 27 <span class="c">#</span> | |
| 41 28 | |
| 42 29 <span class="k">use</span> <span class="w">strict</span><span class="sc">;</span> | |
| 43 30 <span class="k">use</span> <span class="w">Carp</span><span class="sc">;</span> | |
| 44 31 | |
| 45 32 <span class="k">use</span> <span class="w">vars</span> <span class="q">qw($AUTOLOAD)</span><span class="sc">;</span> | |
| 46 33 | |
| 47 34 <span class="c"># Set property for an object...</span> | |
| 48 <a name="SetProperty-"></a> 35 <span class="k">sub </span><span class="m">SetProperty</span> <span class="s">{</span> | |
| 49 36 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Name</span><span class="cm">,</span> <span class="i">$Value</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
| 50 37 | |
| 51 38 <span class="k">if</span> <span class="s">(</span>!<span class="s">(</span><span class="k">defined</span><span class="s">(</span><span class="i">$Name</span><span class="s">)</span> && <span class="k">defined</span><span class="s">(</span><span class="i">$Value</span><span class="s">)</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
| 52 39 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
| 53 40 <span class="s">}</span> | |
| 54 41 <span class="k">return</span> <span class="i">$This</span><span class="i">->_SetProperty</span><span class="s">(</span><span class="i">$Name</span><span class="cm">,</span> <span class="i">$Value</span><span class="s">)</span><span class="sc">;</span> | |
| 55 42 <span class="s">}</span> | |
| 56 43 | |
| 57 44 <span class="c"># Set properties for an object...</span> | |
| 58 <a name="SetProperties-"></a> 45 <span class="k">sub </span><span class="m">SetProperties</span> <span class="s">{</span> | |
| 59 46 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">%NamesAndValues</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
| 60 47 <span class="k">my</span><span class="s">(</span><span class="i">$Name</span><span class="cm">,</span> <span class="i">$Value</span><span class="s">)</span><span class="sc">;</span> | |
| 61 48 | |
| 62 49 <span class="k">while</span> <span class="s">(</span><span class="s">(</span><span class="i">$Name</span><span class="cm">,</span> <span class="i">$Value</span><span class="s">)</span> = <span class="k">each</span> <span class="i">%NamesAndValues</span><span class="s">)</span> <span class="s">{</span> | |
| 63 50 <span class="i">$This</span><span class="i">->_SetProperty</span><span class="s">(</span><span class="i">$Name</span><span class="cm">,</span> <span class="i">$Value</span><span class="s">)</span><span class="sc">;</span> | |
| 64 51 <span class="s">}</span> | |
| 65 52 | |
| 66 53 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
| 67 54 <span class="s">}</span> | |
| 68 55 | |
| 69 56 <span class="c"># Set object property...</span> | |
| 70 <a name="_SetProperty-"></a> 57 <span class="k">sub </span><span class="m">_SetProperty</span> <span class="s">{</span> | |
| 71 58 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Name</span><span class="cm">,</span> <span class="i">$Value</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
| 72 59 | |
| 73 60 <span class="i">$This</span>->{<span class="i">$Name</span>} = <span class="i">$Value</span><span class="sc">;</span> | |
| 74 61 <span class="s">}</span> | |
| 75 62 | |
| 76 63 <span class="c"># Get property for an object...</span> | |
| 77 <a name="GetProperty-"></a> 64 <span class="k">sub </span><span class="m">GetProperty</span> <span class="s">{</span> | |
| 78 65 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Name</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
| 79 66 | |
| 80 67 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$Name</span><span class="s">)</span> <span class="s">{</span> | |
| 81 68 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
| 82 69 <span class="s">}</span> | |
| 83 70 <span class="k">return</span> <span class="i">$This</span><span class="i">->_GetProperty</span><span class="s">(</span><span class="i">$Name</span><span class="s">)</span><span class="sc">;</span> | |
| 84 71 <span class="s">}</span> | |
| 85 72 | |
| 86 73 <span class="c"># Get object property...</span> | |
| 87 <a name="_GetProperty-"></a> 74 <span class="k">sub </span><span class="m">_GetProperty</span> <span class="s">{</span> | |
| 88 75 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Name</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
| 89 76 | |
| 90 77 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>->{<span class="i">$Name</span>}<span class="s">)</span> <span class="s">{</span> | |
| 91 78 <span class="k">return</span> <span class="i">$This</span>->{<span class="i">$Name</span>}<span class="sc">;</span> | |
| 92 79 <span class="s">}</span> | |
| 93 80 <span class="k">else</span> <span class="s">{</span> | |
| 94 81 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
| 95 82 <span class="s">}</span> | |
| 96 83 <span class="s">}</span> | |
| 97 84 | |
| 98 85 <span class="c"># Does this property exist?</span> | |
| 99 <a name="HasProperty-"></a> 86 <span class="k">sub </span><span class="m">HasProperty</span> <span class="s">{</span> | |
| 100 87 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Name</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
| 101 88 | |
| 102 89 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$Name</span><span class="s">)</span> <span class="s">{</span> | |
| 103 90 <span class="k">return</span> <span class="n">0</span><span class="sc">;</span> | |
| 104 91 <span class="s">}</span> | |
| 105 92 <span class="k">return</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>->{<span class="i">$Name</span>}<span class="s">)</span> ? <span class="n">1</span> <span class="co">:</span> <span class="n">0</span><span class="sc">;</span> | |
| 106 93 <span class="s">}</span> | |
| 107 94 | |
| 108 95 <span class="c"># Delete object property...</span> | |
| 109 <a name="DeleteProperty-"></a> 96 <span class="k">sub </span><span class="m">DeleteProperty</span> <span class="s">{</span> | |
| 110 97 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Name</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
| 111 98 | |
| 112 99 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$Name</span><span class="s">)</span> <span class="s">{</span> | |
| 113 100 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
| 114 101 <span class="s">}</span> | |
| 115 102 <span class="k">return</span> <span class="i">$This</span><span class="i">->_DeleteProperty</span><span class="s">(</span><span class="i">$Name</span><span class="s">)</span><span class="sc">;</span> | |
| 116 103 <span class="s">}</span> | |
| 117 104 | |
| 118 105 <span class="c"># Delete object property...</span> | |
| 119 <a name="_DeleteProperty-"></a> 106 <span class="k">sub </span><span class="m">_DeleteProperty</span> <span class="s">{</span> | |
| 120 107 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Name</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
| 121 108 | |
| 122 109 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>->{<span class="i">$Name</span>}<span class="s">)</span> <span class="s">{</span> | |
| 123 110 <span class="k">delete</span> <span class="i">$This</span>->{<span class="i">$Name</span>}<span class="sc">;</span> | |
| 124 111 <span class="s">}</span> | |
| 125 112 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
| 126 113 <span class="s">}</span> | |
| 127 114 | |
| 128 115 <span class="c"># Implements Set<PropertyName> and Get<PropertyName> methods...</span> | |
| 129 <a name="AUTOLOAD-"></a> 116 <span class="k">sub </span><span class="m">AUTOLOAD</span> <span class="s">{</span> | |
| 130 117 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$PropertyValue</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
| 131 118 <span class="k">my</span><span class="s">(</span><span class="i">$PackageName</span><span class="cm">,</span> <span class="i">$MethodName</span><span class="cm">,</span> <span class="i">$PropertyName</span><span class="cm">,</span> <span class="i">$ThisType</span><span class="s">)</span><span class="sc">;</span> | |
| 132 119 | |
| 133 120 <span class="c"># Do a greedy match to make sure package name and method names are</span> | |
| 134 121 <span class="c"># picked up correctly from invocation names containing multiple occurences</span> | |
| 135 122 <span class="c"># of ::. For example: FileIO::SDFileIO::GetFileHandle and so on.</span> | |
| 136 123 <span class="c">#</span> | |
| 137 124 <span class="s">(</span><span class="i">$PackageName</span><span class="cm">,</span> <span class="i">$MethodName</span><span class="s">)</span> = <span class="i">$AUTOLOAD</span> =~ <span class="q">/^(.*)::(.*)$/</span><span class="sc">;</span> | |
| 138 125 | |
| 139 126 <span class="k">if</span> <span class="s">(</span><span class="i">$MethodName</span> =~ <span class="q">/^(BEGIN|DESTROY)$/</span><span class="s">)</span> <span class="s">{</span> | |
| 140 127 <span class="k">return</span><span class="sc">;</span> | |
| 141 128 <span class="s">}</span> | |
| 142 129 | |
| 143 130 <span class="i">$ThisType</span> = <span class="k">ref</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> <span class="k">or</span> <span class="w">croak</span> <span class="q">"Error: Invocation of function ${PackageName}::${MethodName} invocation is not supported: It must be invoked using an object reference..."</span><span class="sc">;</span> | |
| 144 131 | |
| 145 132 <span class="k">if</span> <span class="s">(</span>!<span class="s">(</span><span class="i">$MethodName</span> =~ <span class="q">/^Get/</span> || <span class="i">$MethodName</span> =~ <span class="q">/^Set/</span> || <span class="i">$MethodName</span> =~ <span class="q">/^Delete/</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
| 146 133 <span class="w">croak</span> <span class="q">"Error: Can't locate object method \"$MethodName\" via package \"$ThisType\": This method is not automatically implemented by AUTOLOAD: Only Get<PropertyName>, Set<PropertyName> and Delete<PropertyName> functions are implemented via AUTOLOAD..."</span><span class="sc">;</span> | |
| 147 134 <span class="s">}</span> | |
| 148 135 <span class="k">if</span> <span class="s">(</span><span class="i">$MethodName</span> =~ <span class="q">/^Delete/</span><span class="s">)</span> <span class="s">{</span> | |
| 149 136 <span class="s">(</span><span class="i">$PropertyName</span><span class="s">)</span> = <span class="i">$MethodName</span> =~ <span class="q">/^Delete(.*?)$/</span><span class="sc">;</span> | |
| 150 137 <span class="s">}</span> | |
| 151 138 <span class="k">else</span> <span class="s">{</span> | |
| 152 139 <span class="s">(</span><span class="i">$PropertyName</span><span class="s">)</span> = <span class="i">$MethodName</span> =~ <span class="q">/^[SG]et(.*?)$/</span><span class="sc">;</span> | |
| 153 140 <span class="s">}</span> | |
| 154 141 <span class="k">if</span> <span class="s">(</span><span class="i">$MethodName</span> =~ <span class="q">/^Set/</span> && !<span class="k">defined</span><span class="s">(</span><span class="i">$PropertyValue</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
| 155 142 <span class="w">carp</span> <span class="q">"Warning: ${PackageName}::${MethodName}: Didn't set value for property $PropertyName: Property value for must be specified...\n"</span><span class="sc">;</span> | |
| 156 143 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
| 157 144 <span class="s">}</span> | |
| 158 145 | |
| 159 146 <span class="k">if</span> <span class="s">(</span><span class="i">$MethodName</span> =~ <span class="q">/^Get/</span><span class="s">)</span> <span class="s">{</span> | |
| 160 147 <span class="k">return</span> <span class="i">$This</span><span class="i">->_GetProperty</span><span class="s">(</span><span class="i">$PropertyName</span><span class="s">)</span><span class="sc">;</span> | |
| 161 148 <span class="s">}</span> | |
| 162 149 <span class="k">elsif</span> <span class="s">(</span><span class="i">$MethodName</span> =~ <span class="q">/^Set/</span><span class="s">)</span> <span class="s">{</span> | |
| 163 150 <span class="k">return</span> <span class="i">$This</span><span class="i">->_SetProperty</span><span class="s">(</span><span class="i">$PropertyName</span><span class="cm">,</span> <span class="i">$PropertyValue</span><span class="s">)</span><span class="sc">;</span> | |
| 164 151 <span class="s">}</span> | |
| 165 152 <span class="k">elsif</span> <span class="s">(</span><span class="i">$MethodName</span> =~ <span class="q">/^Delete/</span><span class="s">)</span> <span class="s">{</span> | |
| 166 153 <span class="k">return</span> <span class="i">$This</span><span class="i">->_DeleteProperty</span><span class="s">(</span><span class="i">$PropertyName</span><span class="s">)</span><span class="sc">;</span> | |
| 167 154 <span class="s">}</span> | |
| 168 155 | |
| 169 156 <span class="s">}</span> | |
| 170 157 | |
| 171 <a name="EOF-"></a></pre> | |
| 172 <p> </p> | |
| 173 <br /> | |
| 174 <center> | |
| 175 <img src="../../../images/h2o2.png"> | |
| 176 </center> | |
| 177 </body> | |
| 178 </html> |