author | Stefan Vogel <sv@exept.de> |
Tue, 10 Oct 2017 18:06:40 +0200 | |
changeset 22309 | a48cd79a42a5 |
parent 21656 | d0426621ce99 |
child 23819 | 8803cc371eca |
permissions | -rw-r--r-- |
21656 | 1 |
"{ Encoding: utf8 }" |
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||
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" |
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COPYRIGHT (c) 1995 by eXept Software AG |
2110 | 5 |
All Rights Reserved |
328 | 6 |
|
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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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9 |
inclusion of the above copyright notice. This software may not |
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10 |
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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12 |
hereby transferred. |
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" |
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5557 | 14 |
"{ Package: 'stx:libbasic' }" |
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"{ NameSpace: Smalltalk }" |
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||
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KeyedCollection variableSubclass:#MethodDictionary |
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instanceVariableNames:'' |
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classVariableNames:'' |
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poolDictionaries:'' |
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category:'Kernel-Methods' |
328 | 23 |
! |
24 |
||
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!MethodDictionary class methodsFor:'documentation'! |
328 | 26 |
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copyright |
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" |
|
2183 | 29 |
COPYRIGHT (c) 1995 by eXept Software AG |
2110 | 30 |
All Rights Reserved |
328 | 31 |
|
32 |
This software is furnished under a license and may be used |
|
33 |
only in accordance with the terms of that license and with the |
|
34 |
inclusion of the above copyright notice. This software may not |
|
35 |
be provided or otherwise made available to, or used by, any |
|
36 |
other person. No title to or ownership of the software is |
|
37 |
hereby transferred. |
|
38 |
" |
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! |
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40 |
||
41 |
documentation |
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42 |
" |
|
43 |
Instances of MethodDictionary store selector/method associations |
|
8467 | 44 |
in classes. Conceptionally, they behave like IdentityDictionaries, but are |
45 |
implemented using a single array (instead of Dictionary, which uses |
|
328 | 46 |
two arrays to store keys and values separately). |
47 |
Also, they do not use hashing, since due to caching in the VM, hashing |
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does not make too much of a difference in speed, but complicates the |
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8467 | 49 |
VM implementation. |
1465 | 50 |
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[author:] |
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Stefan Vogel |
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||
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[see also:] |
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Dictionary |
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8467 | 56 |
IdentityDictionary |
1465 | 57 |
Behavior Class |
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Method |
59 |
Symbol |
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" |
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! ! |
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||
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!MethodDictionary class methodsFor:'instance creation'! |
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new:sz |
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"create and return a new methodDictionary holding sz |
67 |
key->value associations" |
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||
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^ self basicNew:(sz * 2) |
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! |
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newWithCapacity:size |
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"return a new empty Collection with capacity for n elements." |
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^ self new:size |
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"Created: / 10-10-2017 / 17:51:14 / stefan" |
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! |
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||
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withAll:aDictionary |
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"create a MethodDictionary from another Dictionary" |
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82 |
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|newDict i "{ Class: SmallInteger }" | |
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84 |
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newDict := self new:aDictionary size. |
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i := 1. |
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aDictionary keysAndValuesDo:[:key :value | |
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newDict basicAt:i put:key. |
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newDict basicAt:i+1 put:value. |
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i := i+2. |
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91 |
]. |
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92 |
^ newDict |
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93 |
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" |
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|d| |
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96 |
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d := Dictionary withKeys:#(a b c d e) andValues:#(1 2 3 4 5). |
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MethodDictionary withAll:d. |
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" |
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100 |
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"Created: 12.6.1996 / 13:46:43 / stefan" |
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"Modified: 12.6.1996 / 13:56:36 / stefan" |
1519 | 103 |
"Modified: 3.7.1996 / 11:05:55 / cg" |
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! |
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105 |
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withKeys:keys andValues:values |
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"create a MethodDictionary from a key (selector) array and value (method) array" |
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|inst |
110 |
sz "{ Class: SmallInteger }" |
|
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idx "{ Class: SmallInteger }" | |
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112 |
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sz := keys size. |
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inst := self new:sz. |
2897 | 115 |
idx := 2. |
1519 | 116 |
1 to:sz do:[:i | |
2897 | 117 |
inst basicAt:(idx-1) put:(keys at:i). |
118 |
inst basicAt:(idx) put:(values at:i). |
|
119 |
idx := idx + 2. |
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]. |
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^ inst |
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"Created: 12.6.1996 / 13:46:43 / stefan" |
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"Modified: 3.7.1996 / 11:05:34 / cg" |
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! ! |
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126 |
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!MethodDictionary class methodsFor:'queries'! |
328 | 129 |
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130 |
isBuiltInClass |
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131 |
"this class is known by the run-time-system" |
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132 |
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133 |
^ self == MethodDictionary |
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135 |
"Modified: / 08-08-2006 / 16:06:26 / cg" |
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328 | 136 |
! ! |
137 |
||
138 |
!MethodDictionary methodsFor:'accessing'! |
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139 |
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140 |
at:key ifAbsent:exceptionBlock |
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141 |
"return the element indexed by aKey - |
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142 |
return result of exceptionBlock if no element is stored under aKey" |
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143 |
||
144 |
|sz "{ Class: SmallInteger }"| |
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145 |
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146 |
sz := self basicSize. |
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147 |
1 to:sz by:2 do:[:i | |
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2897 | 148 |
(self basicAt:i) == key ifTrue:[^ self basicAt:(i + 1)] |
328 | 149 |
]. |
150 |
^ exceptionBlock value |
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151 |
! |
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152 |
||
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at:key put:value |
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"set the value for a given key, which is supposed to be a symbol. |
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155 |
In contrast to dictionaries, we allow adding elements only, if there is an |
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empty slot (nil key) present." |
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157 |
|
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158 |
|slot sz "{ Class: SmallInteger }"| |
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159 |
|
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160 |
sz := self basicSize. |
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161 |
1 to:sz by:2 do:[:i | |
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162 |
slot := self basicAt:i. |
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163 |
(slot == key) ifTrue:[ |
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164 |
^ self basicAt:(i + 1) put:value |
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165 |
]. |
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166 |
slot isNil ifTrue:[ |
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167 |
self basicAt:i put:key. |
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168 |
^ self basicAt:(i + 1) put:value |
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169 |
]. |
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170 |
]. |
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171 |
^ self errorKeyNotFound:key |
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172 |
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173 |
"Modified: 7.6.1996 / 09:39:04 / stefan" |
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174 |
"Modified: 23.1.1997 / 13:59:29 / cg" |
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175 |
! |
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176 |
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177 |
at:key putOrAppend:value |
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178 |
"set the value for a given key, which is supposed to be a symbol. |
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179 |
In contrast to dictionaries, we allow adding elements only, if there is an |
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180 |
empty slot (nil key) present. |
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181 |
Otherwise a new MethodDictionary is created & returned" |
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182 |
|
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183 |
|slot emptySlot newDict sz "{ Class: SmallInteger }"| |
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184 |
|
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185 |
sz := self basicSize. |
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186 |
1 to:sz by:2 do:[:i | |
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187 |
slot := self basicAt:i. |
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188 |
(slot == key) ifTrue:[ |
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189 |
self basicAt:(i + 1) put:value . |
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190 |
^ self. |
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191 |
]. |
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192 |
slot isNil ifTrue:[ |
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193 |
emptySlot := i. |
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194 |
] |
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195 |
]. |
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196 |
|
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197 |
emptySlot notNil ifTrue:[ |
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198 |
self basicAt:emptySlot put:key. |
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199 |
self basicAt:(emptySlot + 1) put:value. |
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200 |
^ self. |
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201 |
]. |
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|
202 |
|
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203 |
"/ not enough room for new entry, copy to new dictionary |
2406 | 204 |
newDict := self class new:sz//2+1. |
2183 | 205 |
|
21656 | 206 |
"/ cannot do this (not defined in Object!!) ... |
2183 | 207 |
"/ newDict replaceFrom:1 to:sz with:self startingAt:1. |
208 |
"/ must use basicAt |
|
209 |
1 to:sz do:[:i | |
|
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newDict basicAt:i put:(self basicAt:i). |
2183 | 211 |
]. |
212 |
||
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213 |
newDict basicAt:(sz+1) put:key. |
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214 |
newDict basicAt:(sz+2) put:value. |
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215 |
^ newDict. |
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|
216 |
|
21656 | 217 |
"Created: / 07-06-1996 / 15:01:54 / stefan" |
218 |
"Modified: / 07-06-1996 / 17:32:40 / stefan" |
|
219 |
"Modified: / 23-01-1997 / 14:00:03 / cg" |
|
220 |
"Modified (comment): / 17-03-2017 / 11:26:44 / stefan" |
|
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221 |
! |
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|
222 |
|
21370 | 223 |
keyAtIdenticalValue:value ifAbsent:exceptionBlock |
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|
224 |
"return the first key with value - |
21370 | 225 |
return result of exceptionBlock if no key can be found. |
226 |
This is a slow access, since the receiver is searched sequentially. |
|
227 |
NOTICE: |
|
228 |
The value is searched using identity compare" |
|
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229 |
|
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230 |
|sz "{ Class: SmallInteger }"| |
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|
231 |
|
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232 |
sz := self basicSize. |
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233 |
2 to:sz by:2 do:[:i | |
2897 | 234 |
(self basicAt:i) == value ifTrue:[^ self basicAt:(i - 1)] |
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|
235 |
]. |
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|
236 |
^ exceptionBlock value |
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|
237 |
|
21370 | 238 |
"Created: / 07-02-2017 / 11:14:40 / cg" |
21654 | 239 |
! |
240 |
||
241 |
keyAtValue:value |
|
242 |
"return the key under which value is stored. |
|
243 |
Raise an error if not found. |
|
244 |
This is a slow access, since the receiver is searched sequentially. |
|
245 |
NOTICE: |
|
246 |
The value is searched using identity compare. |
|
247 |
use #keyAtEqualValue:ifAbsent: to compare for equality." |
|
248 |
||
249 |
^ self keyAtIdenticalValue:value. |
|
250 |
||
251 |
"Created: / 19-06-1998 / 00:49:16 / cg" |
|
252 |
"Modified (comment): / 07-02-2017 / 11:13:29 / cg" |
|
253 |
! |
|
254 |
||
255 |
keyAtValue:value ifAbsent:exceptionBlock |
|
256 |
"return the key under which value is stored. |
|
257 |
If not found, return the value from evaluating exceptionBlock. |
|
258 |
This is a slow access, since the receiver is searched sequentially. |
|
259 |
NOTICE: |
|
260 |
The value is searched using identity compare; |
|
261 |
use #keyAtEqualValue:ifAbsent: to compare for equality." |
|
262 |
||
263 |
^ self keyAtIdenticalValue:value ifAbsent:exceptionBlock. |
|
264 |
||
265 |
"Created: / 19-06-1998 / 00:50:34 / cg" |
|
266 |
"Modified: / 07-02-2017 / 11:13:20 / cg" |
|
9481 | 267 |
! ! |
268 |
||
269 |
||
270 |
!MethodDictionary methodsFor:'enumerating'! |
|
271 |
||
17251 | 272 |
do:aBlock |
273 |
"evaluate aBlock for each value (i.e. each method)" |
|
274 |
||
275 |
|key value sz "{ Class: SmallInteger }"| |
|
276 |
||
277 |
sz := self basicSize. |
|
278 |
1 to:sz by:2 do:[:i | |
|
279 |
key := self basicAt:i. |
|
280 |
key notNil ifTrue:[ |
|
281 |
value := self basicAt:(i+1). |
|
282 |
value notNil ifTrue:[ |
|
283 |
aBlock value:value. |
|
284 |
] |
|
285 |
] |
|
286 |
]. |
|
287 |
! |
|
288 |
||
9481 | 289 |
keysAndValuesDo:aBlock |
290 |
"evaluate the 2 arg block aBlock for each key (i.e. each selector) |
|
291 |
and each value (i.e. each method)" |
|
292 |
||
293 |
|key value sz "{ Class: SmallInteger }"| |
|
294 |
||
295 |
sz := self basicSize. |
|
296 |
1 to:sz by:2 do:[:i | |
|
21656 | 297 |
key := self basicAt:i. |
298 |
value := self basicAt:(i+1). |
|
299 |
(key notNil and:[value notNil]) ifTrue:[ |
|
300 |
aBlock value:key value:value. |
|
9481 | 301 |
] |
302 |
]. |
|
303 |
||
304 |
"Created: / 07-06-1996 / 09:27:42 / stefan" |
|
305 |
"Modified: / 08-08-2006 / 16:11:30 / cg" |
|
21656 | 306 |
"Modified: / 17-03-2017 / 11:07:07 / stefan" |
9481 | 307 |
! ! |
308 |
||
309 |
!MethodDictionary methodsFor:'private'! |
|
310 |
||
311 |
compressed |
|
312 |
"compress - return either the myself or a new, compressed MethodDictionary" |
|
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|
313 |
|
9481 | 314 |
|newDict tally key mySize |
315 |
dstIndex "{ Class: SmallInteger }" |
|
316 |
sz "{ Class: SmallInteger }" | |
|
317 |
||
318 |
sz := self basicSize. |
|
319 |
mySize := sz // 2. |
|
320 |
tally := 0. |
|
321 |
1 to:sz by:2 do:[:i | |
|
322 |
(self basicAt:i) notNil ifTrue:[ |
|
323 |
tally := tally + 1 |
|
324 |
] |
|
325 |
]. |
|
326 |
||
327 |
tally == mySize ifTrue:[^ self]. |
|
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diff
changeset
|
328 |
|
9481 | 329 |
newDict := self species new:tally. |
330 |
dstIndex := 1. |
|
331 |
1 to:sz by:2 do:[:i | |
|
332 |
key := self basicAt:i. |
|
333 |
key notNil ifTrue:[ |
|
334 |
newDict basicAt:dstIndex put:key. |
|
335 |
newDict basicAt:dstIndex+1 put:(self basicAt:i+1). |
|
336 |
dstIndex := dstIndex + 2. |
|
337 |
] |
|
338 |
]. |
|
339 |
^ newDict |
|
340 |
||
341 |
"Modified: / 05-08-2004 / 20:05:44 / stefan" |
|
342 |
! ! |
|
343 |
||
344 |
!MethodDictionary methodsFor:'queries'! |
|
345 |
||
346 |
size |
|
347 |
"return the number of elements (associations) in the receiver" |
|
348 |
||
349 |
^ self basicSize // 2 |
|
21266 | 350 |
! |
351 |
||
352 |
speciesForCollecting |
|
353 |
^ Bag |
|
354 |
||
355 |
"Created: / 20-01-2017 / 18:07:53 / stefan" |
|
9481 | 356 |
! ! |
357 |
||
358 |
!MethodDictionary methodsFor:'removing'! |
|
1461
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diff
changeset
|
359 |
|
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parents:
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diff
changeset
|
360 |
removeKey:key ifAbsent:failBlock |
19843 | 361 |
"remove key from dictionary, |
362 |
return the value previously stored there. |
|
363 |
If it was not in the collection return the result |
|
364 |
from evaluating failBlock. |
|
1461
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
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parents:
530
diff
changeset
|
365 |
We actually do not remove it, but set it to nil." |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
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parents:
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diff
changeset
|
366 |
|
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parents:
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diff
changeset
|
367 |
|value sz "{ Class: SmallInteger }"| |
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parents:
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diff
changeset
|
368 |
|
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parents:
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diff
changeset
|
369 |
sz := self basicSize. |
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Use methodDictionary instead of selector/method arrays.
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parents:
530
diff
changeset
|
370 |
1 to:sz by:2 do:[:i | |
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Use methodDictionary instead of selector/method arrays.
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parents:
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diff
changeset
|
371 |
(self basicAt:i) == key ifTrue:[ |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
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parents:
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diff
changeset
|
372 |
value := self basicAt:(i + 1). |
9444 | 373 |
self basicAt:i put:nil. |
374 |
self basicAt:(i+1) put:nil. |
|
1461
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parents:
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diff
changeset
|
375 |
^ value |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
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parents:
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diff
changeset
|
376 |
] |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
377 |
]. |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
378 |
|
2109
c019b0e813ec
oops removeKey:ifAbsent: should send #value to the block
Claus Gittinger <cg@exept.de>
parents:
1703
diff
changeset
|
379 |
^ failBlock value. |
1461
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Use methodDictionary instead of selector/method arrays.
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parents:
530
diff
changeset
|
380 |
|
9444 | 381 |
"Created: / 07-06-1996 / 15:57:56 / stefan" |
382 |
"Modified: / 16-07-2006 / 13:08:41 / cg" |
|
1461
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
383 |
! |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
384 |
|
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
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parents:
530
diff
changeset
|
385 |
removeKeyAndCompress:key |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
386 |
"remove key from dictionary. |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
387 |
A new, compressed MethodDictionary will be returned, |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
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parents:
530
diff
changeset
|
388 |
or nil, if key is not present." |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
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parents:
530
diff
changeset
|
389 |
|
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
390 |
|newDict dstIndex sz "{ Class: SmallInteger }"| |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
391 |
|
2402
fc35bd8b4343
#identityIndexOf: is not allowed;
Claus Gittinger <cg@exept.de>
parents:
2386
diff
changeset
|
392 |
sz := self basicSize. |
fc35bd8b4343
#identityIndexOf: is not allowed;
Claus Gittinger <cg@exept.de>
parents:
2386
diff
changeset
|
393 |
1 to:sz by:2 do:[:i | |
fc35bd8b4343
#identityIndexOf: is not allowed;
Claus Gittinger <cg@exept.de>
parents:
2386
diff
changeset
|
394 |
(self basicAt:i) == key ifTrue:[ |
fc35bd8b4343
#identityIndexOf: is not allowed;
Claus Gittinger <cg@exept.de>
parents:
2386
diff
changeset
|
395 |
dstIndex := i |
fc35bd8b4343
#identityIndexOf: is not allowed;
Claus Gittinger <cg@exept.de>
parents:
2386
diff
changeset
|
396 |
] |
fc35bd8b4343
#identityIndexOf: is not allowed;
Claus Gittinger <cg@exept.de>
parents:
2386
diff
changeset
|
397 |
]. |
fc35bd8b4343
#identityIndexOf: is not allowed;
Claus Gittinger <cg@exept.de>
parents:
2386
diff
changeset
|
398 |
|
fc35bd8b4343
#identityIndexOf: is not allowed;
Claus Gittinger <cg@exept.de>
parents:
2386
diff
changeset
|
399 |
dstIndex isNil ifTrue:[^ self]. |
1508
960d6e7e563b
removeKeyAndCompress - failed if key was not present.
Claus Gittinger <cg@exept.de>
parents:
1485
diff
changeset
|
400 |
|
1461
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
401 |
sz := self basicSize. |
2406 | 402 |
newDict := self class new:(sz//2-1). |
1461
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
403 |
dstIndex := 1. |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
404 |
1 to:sz by:2 do:[:i | |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
405 |
(self basicAt:i) ~~ key ifTrue:[ |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
406 |
newDict basicAt:dstIndex put:(self basicAt:i). |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
407 |
newDict basicAt:dstIndex+1 put:(self basicAt:i+1). |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
408 |
dstIndex := dstIndex + 2. |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
409 |
] |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
410 |
]. |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
411 |
dstIndex > sz ifTrue:[ |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
412 |
^ nil |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
413 |
]. |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
414 |
^ newDict |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
415 |
|
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
416 |
"Created: 7.6.1996 / 15:57:56 / stefan" |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
417 |
"Modified: 7.6.1996 / 16:47:02 / stefan" |
2402
fc35bd8b4343
#identityIndexOf: is not allowed;
Claus Gittinger <cg@exept.de>
parents:
2386
diff
changeset
|
418 |
"Modified: 12.2.1997 / 19:47:23 / cg" |
1461
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
419 |
! ! |
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
420 |
|
2109
c019b0e813ec
oops removeKey:ifAbsent: should send #value to the block
Claus Gittinger <cg@exept.de>
parents:
1703
diff
changeset
|
421 |
!MethodDictionary class methodsFor:'documentation'! |
328 | 422 |
|
1461
dd25bb1e9973
Use methodDictionary instead of selector/method arrays.
Stefan Vogel <sv@exept.de>
parents:
530
diff
changeset
|
423 |
version |
19843 | 424 |
^ '$Header$' |
13514 | 425 |
! |
426 |
||
427 |
version_CVS |
|
19843 | 428 |
^ '$Header$' |
328 | 429 |
! ! |
17251 | 430 |