author | Claus Gittinger <cg@exept.de> |
Fri, 20 Dec 1996 21:34:16 +0100 | |
changeset 2010 | eaaa38e8bad0 |
parent 2007 | 57434c08d720 |
child 2015 | 7e6375a8e0f2 |
permissions | -rw-r--r-- |
1827 | 1 |
" |
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COPYRIGHT (c) 1996 by Claus Gittinger |
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All Rights Reserved |
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||
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This software is furnished under a license and may be used |
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only in accordance with the terms of that license and with the |
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inclusion of the above copyright notice. This software may not |
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be provided or otherwise made available to, or used by, any |
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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||
1943
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Object subclass:#Namespace |
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instanceVariableNames:'' |
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classVariableNames:'' |
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poolDictionaries:'' |
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category:'Kernel-Classes' |
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! |
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!Namespace class methodsFor:'documentation'! |
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copyright |
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" |
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COPYRIGHT (c) 1996 by Claus Gittinger |
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All Rights Reserved |
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||
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This software is furnished under a license and may be used |
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29 |
only in accordance with the terms of that license and with the |
|
30 |
inclusion of the above copyright notice. This software may not |
|
31 |
be provided or otherwise made available to, or used by, any |
|
32 |
other person. No title to or ownership of the software is |
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33 |
hereby transferred. |
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" |
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! |
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documentation |
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" |
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A Namespace is actually a dummy class, providing a home |
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for its private classes. |
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Thus, internally, the same mechanism is used for classes in |
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a namespace and private classes. |
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This has two advantages: |
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- we only need one mechanism for both namespaces |
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and private classes |
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- there are no possible conflicts between a class |
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and a namespace named alike. |
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[author:] |
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Claus Gittinger |
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[see also:] |
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Behavior ClassDescription Class Metaclass |
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PrivateMetaclass |
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" |
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! ! |
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!Namespace class methodsFor:'instance creation'! |
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fullName:aFullNameSpacePathName |
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"given a possibly nested name of a namespace, create all required |
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intermediate spaces (if not already existing) and return the |
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bottom-level space." |
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|
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"/ break it up, check for all intermediate spaces to exist |
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"/ create them as required. |
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|
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|list idx0 idx superSpace done thisNamespace| |
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list := OrderedCollection new. |
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idx0 := 1. |
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done := false. |
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[done] whileFalse:[ |
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idx := aFullNameSpacePathName indexOf:$: startingAt:idx0. |
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(idx ~~ 0) ifTrue:[ |
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(idx < aFullNameSpacePathName size and:[(aFullNameSpacePathName at:(idx+1)) == $:]) ifTrue:[ |
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superSpace := aFullNameSpacePathName copyFrom:idx0 to:(idx-1). |
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82 |
list add:superSpace. |
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idx0 := idx +2. |
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] ifFalse:[ |
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done := true |
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] |
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87 |
] ifFalse:[ |
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done := true. |
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] |
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]. |
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list add:(aFullNameSpacePathName copyFrom:idx0). |
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|
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"/ now, look and create 'em |
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|
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95 |
thisNamespace := nil. |
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96 |
list do:[:aName | |
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97 |
|key x| |
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98 |
|
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key := aName asSymbol. |
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100 |
|
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thisNamespace isNil ifTrue:[ |
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(Smalltalk includesKey:key) ifTrue:[ |
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103 |
thisNamespace := Smalltalk at:key. |
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104 |
(thisNamespace notNil |
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and:[thisNamespace isBehavior not]) ifTrue:[ |
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^ self error:'name conflict: namespace ' , aName , ' vs. global'. |
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107 |
] |
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108 |
]. |
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109 |
thisNamespace isNil ifTrue:[ |
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110 |
thisNamespace := self name:key |
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111 |
] |
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112 |
] ifFalse:[ |
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113 |
x := thisNamespace privateClassesAt:key. |
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114 |
x notNil ifTrue:[ |
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115 |
thisNamespace := x |
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] ifFalse:[ |
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117 |
thisNamespace := |
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118 |
self subclass:key |
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instanceVariableNames:'' |
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120 |
classVariableNames:'' |
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121 |
poolDictionaries:'' |
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122 |
privateIn:thisNamespace |
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123 |
] |
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] |
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125 |
]. |
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126 |
|
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127 |
^ thisNamespace |
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128 |
|
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129 |
"Created: 8.11.1996 / 13:41:59 / cg" |
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130 |
"Modified: 20.12.1996 / 15:17:07 / cg" |
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131 |
! |
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132 |
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133 |
name:aStringOrSymbol |
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134 |
"create a new nameSpace, named aStringOrSymbol" |
1908 | 135 |
|
1828 | 136 |
|newNamespace| |
137 |
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138 |
(aStringOrSymbol includes:$:) ifTrue:[ |
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139 |
self error:'invalid namespace name'. |
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140 |
^ nil. |
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141 |
]. |
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142 |
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143 |
newNamespace := self subclass:aStringOrSymbol asSymbol |
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144 |
instanceVariableNames:'' |
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145 |
classVariableNames:'' |
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146 |
poolDictionaries:'' |
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147 |
category:'uncategorized namespace'. |
1908 | 148 |
|
1828 | 149 |
^ newNamespace |
1901 | 150 |
|
151 |
" |
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152 |
Namespace name:'foo' |
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153 |
(Namespace name:'foo') category:'my name space' |
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154 |
foo at:#bar put:(Metaclass new new) |
1901 | 155 |
" |
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156 |
|
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157 |
"Modified: 20.12.1996 / 15:21:02 / cg" |
1828 | 158 |
! |
159 |
||
160 |
new |
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|
161 |
"catch new - namespaces are not to be created by the user" |
0ec17e4627ae
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changeset
|
162 |
|
1828 | 163 |
self error:'namespaces are not to be created with new' |
1943
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|
164 |
|
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|
165 |
"Modified: 8.11.1996 / 21:38:00 / cg" |
1828 | 166 |
! ! |
167 |
||
1908 | 168 |
!Namespace class methodsFor:'accessing'! |
1827 | 169 |
|
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170 |
allClasses |
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171 |
|classes| |
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172 |
|
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173 |
classes := IdentitySet new. |
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174 |
self allBehaviorsDo:[:aClass | classes add:aClass]. |
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175 |
^ classes |
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|
176 |
|
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parents:
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|
177 |
"Modified: 20.12.1996 / 15:34:50 / cg" |
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178 |
! |
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|
179 |
|
1827 | 180 |
at:classNameSymbol |
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181 |
"return a class from the namespace defined by the receiver" |
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182 |
|
1828 | 183 |
^ self privateClassesAt:classNameSymbol |
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184 |
|
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"Modified: 8.11.1996 / 21:39:41 / cg" |
1827 | 186 |
! |
187 |
||
188 |
at:classNameSymbol ifAbsent:exceptionBlock |
|
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189 |
"return a class or an alternative |
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190 |
from the namespace defined by the receiver" |
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191 |
|
1827 | 192 |
|cls| |
193 |
||
1828 | 194 |
cls := self privateClassesAt:classNameSymbol. |
1827 | 195 |
cls isNil ifTrue:[ |
196 |
^ exceptionBlock value |
|
197 |
]. |
|
198 |
^ cls |
|
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199 |
|
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"Modified: 8.11.1996 / 21:40:01 / cg" |
1827 | 201 |
! |
202 |
||
203 |
at:classNameSymbol put:aClass |
|
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204 |
"add a class to the namespace defined by the receiver" |
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205 |
|
1828 | 206 |
^ self privateClassesAt:classNameSymbol put:aClass |
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207 |
|
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208 |
"Modified: 8.11.1996 / 21:40:12 / cg" |
1827 | 209 |
! ! |
210 |
||
1908 | 211 |
!Namespace class methodsFor:'enumerating'! |
1816 | 212 |
|
213 |
allBehaviorsDo:aBlock |
|
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214 |
"enumerate all classes in this namespace" |
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215 |
|
1828 | 216 |
self privateClassesDo:aBlock |
1816 | 217 |
|
218 |
"Created: 26.10.1996 / 12:29:01 / cg" |
|
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219 |
"Modified: 8.11.1996 / 21:39:20 / cg" |
1816 | 220 |
! ! |
221 |
||
1908 | 222 |
!Namespace class methodsFor:'fileOut'! |
1828 | 223 |
|
224 |
basicFileOutDefinitionOn:aStream |
|
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225 |
"redefined to generate another definition message" |
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226 |
|
1934 | 227 |
self == Namespace ifTrue:[ |
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228 |
super basicFileOutDefinitionOn:aStream |
1934 | 229 |
] ifFalse:[ |
230 |
aStream nextPutAll:('Namespace name:' , self name storeString) |
|
231 |
] |
|
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232 |
|
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233 |
"Modified: 8.11.1996 / 21:39:03 / cg" |
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234 |
! ! |
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235 |
|
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236 |
!Namespace class methodsFor:'printing & storing'! |
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237 |
|
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238 |
displayString |
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239 |
"return a printed represenation - here, a reminder is appended, |
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240 |
that this is not a regular class" |
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241 |
|
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242 |
self == Namespace ifTrue:[ |
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243 |
^ super displayString |
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244 |
]. |
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245 |
^ self name , ' (* namespace *)' |
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246 |
|
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247 |
"Created: 8.11.1996 / 21:37:24 / cg" |
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248 |
"Modified: 20.12.1996 / 15:11:31 / cg" |
1828 | 249 |
! ! |
250 |
||
1908 | 251 |
!Namespace class methodsFor:'queries'! |
1816 | 252 |
|
253 |
isNamespace |
|
1943
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254 |
"return true - I am a namespace" |
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255 |
|
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256 |
self == Namespace ifTrue:[^ false]. |
1816 | 257 |
^ true |
258 |
||
259 |
"Created: 26.10.1996 / 11:13:36 / cg" |
|
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260 |
"Modified: 20.12.1996 / 15:11:45 / cg" |
1816 | 261 |
! ! |
262 |
||
263 |
!Namespace class methodsFor:'documentation'! |
|
264 |
||
265 |
version |
|
2010 | 266 |
^ '$Header: /cvs/stx/stx/libbasic/NameSpace.st,v 1.11 1996-12-20 20:34:16 cg Exp $' |
1816 | 267 |
! ! |