author | Stefan Vogel <sv@exept.de> |
Fri, 03 Apr 2020 18:50:48 +0200 | |
changeset 5471 | 0bee7a5e40e8 |
parent 5247 | abb5d984aafa |
permissions | -rw-r--r-- |
4330 | 1 |
" |
2 |
COPYRIGHT (c) 2009 by Claus Gittinger |
|
3 |
All Rights Reserved |
|
4 |
||
5 |
This software is furnished under a license and may be used |
|
6 |
only in accordance with the terms of that license and with the |
|
7 |
inclusion of the above copyright notice. This software may not |
|
8 |
be provided or otherwise made available to, or used by, any |
|
9 |
other person. No title to or ownership of the software is |
|
10 |
hereby transferred. |
|
11 |
" |
|
2363 | 12 |
"{ Package: 'stx:libbasic2' }" |
13 |
||
4330 | 14 |
"{ NameSpace: Smalltalk }" |
15 |
||
2673
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
16 |
PeekableStream subclass:#CollectingReadStream |
2363 | 17 |
instanceVariableNames:'collectBlock inStream' |
18 |
classVariableNames:'' |
|
19 |
poolDictionaries:'' |
|
2365 | 20 |
category:'Streams-Misc' |
2363 | 21 |
! |
22 |
||
23 |
!CollectingReadStream class methodsFor:'documentation'! |
|
24 |
||
4330 | 25 |
copyright |
26 |
" |
|
27 |
COPYRIGHT (c) 2009 by Claus Gittinger |
|
28 |
All Rights Reserved |
|
29 |
||
30 |
This software is furnished under a license and may be used |
|
31 |
only in accordance with the terms of that license and with the |
|
32 |
inclusion of the above copyright notice. This software may not |
|
33 |
be provided or otherwise made available to, or used by, any |
|
34 |
other person. No title to or ownership of the software is |
|
35 |
hereby transferred. |
|
36 |
" |
|
37 |
! |
|
38 |
||
2363 | 39 |
documentation |
40 |
" |
|
3270 | 41 |
A stream which evaluates collectBlock for every element |
42 |
read from an underlying stream, providing the result from |
|
43 |
the evaluation as read-elements. |
|
44 |
Useful to process a readStream, for tracing or diverting to another |
|
45 |
processing stage. |
|
46 |
||
47 |
[Author:] |
|
48 |
Claus Gittinger |
|
2363 | 49 |
" |
50 |
! |
|
51 |
||
52 |
examples |
|
53 |
" |
|
54 |
[exBegin] |
|
55 |
|s| |
|
56 |
||
57 |
s := CollectingReadStream |
|
58 |
on:#(1 2 3 4 5 6 7 8) readStream |
|
59 |
collecting:[:each | each squared]. |
|
60 |
s upToEnd |
|
61 |
[exEnd] |
|
62 |
||
63 |
[exBegin] |
|
64 |
|s| |
|
65 |
||
66 |
s := (#(1 2 3 4 5 6 7 8) readStream |
|
67 |
selecting:[:n | n odd]) |
|
68 |
collecting:[:n | n squared]. |
|
69 |
s upToEnd |
|
70 |
[exEnd] |
|
71 |
" |
|
72 |
! ! |
|
73 |
||
74 |
!CollectingReadStream class methodsFor:'instance creation'! |
|
75 |
||
3270 | 76 |
diverting:aStream to:anotherStream |
77 |
^ self on:aStream collecting:[:el | anotherStream nextPut:el. el]. |
|
78 |
||
79 |
" |
|
80 |
|s| |
|
81 |
||
82 |
s := CollectingReadStream |
|
83 |
diverting:#(1 2 3 4 5 6 7 8) readStream |
|
84 |
to:Transcript. |
|
85 |
s upToEnd |
|
86 |
" |
|
87 |
! |
|
88 |
||
2363 | 89 |
on:aStream collecting:aBlock |
90 |
^ self basicNew on:aStream collecting:aBlock |
|
3270 | 91 |
|
92 |
" |
|
93 |
|s| |
|
94 |
||
95 |
s := CollectingReadStream |
|
96 |
on:#(1 2 3 4 5 6 7 8) readStream |
|
97 |
collecting:[:each | each squared]. |
|
98 |
s upToEnd |
|
99 |
" |
|
2363 | 100 |
! ! |
101 |
||
5247 | 102 |
!CollectingReadStream methodsFor:'accessing'! |
103 |
||
104 |
readStream |
|
105 |
^ self |
|
106 |
||
107 |
"Created: / 26-10-2011 / 17:25:43 / cg" |
|
108 |
! ! |
|
109 |
||
2363 | 110 |
!CollectingReadStream methodsFor:'instance creation'! |
111 |
||
112 |
on:aStream collecting:aBlock |
|
113 |
inStream := aStream. |
|
114 |
collectBlock := aBlock. |
|
115 |
! ! |
|
116 |
||
5247 | 117 |
!CollectingReadStream methodsFor:'obsolete positioning'! |
118 |
||
119 |
position0Based |
|
120 |
<resource: #obsolete> |
|
121 |
^ inStream position |
|
122 |
||
123 |
"Created: / 26-10-2011 / 17:23:56 / cg" |
|
124 |
! |
|
125 |
||
126 |
position1Based |
|
127 |
<resource: #obsolete> |
|
128 |
^ inStream position + 1 |
|
129 |
||
130 |
"Created: / 26-10-2011 / 17:22:42 / cg" |
|
131 |
! ! |
|
132 |
||
2363 | 133 |
!CollectingReadStream methodsFor:'queries'! |
134 |
||
135 |
atEnd |
|
136 |
^ inStream atEnd |
|
3092 | 137 |
! |
138 |
||
4951 | 139 |
contents |
140 |
^ nil. |
|
141 |
||
142 |
"Created: / 26-05-2019 / 00:52:54 / Claus Gittinger" |
|
143 |
! |
|
144 |
||
3092 | 145 |
contentsSpecies |
146 |
"return a class of which instances will be returned, when |
|
147 |
parts of the collection are asked for. |
|
148 |
(see upTo-kind of methods in Stream)" |
|
149 |
||
150 |
^ inStream contentsSpecies. |
|
2363 | 151 |
! ! |
152 |
||
5247 | 153 |
!CollectingReadStream methodsFor:'reading'! |
2363 | 154 |
|
155 |
next |
|
156 |
inStream atEnd ifTrue:[ |
|
157 |
^ self pastEndRead |
|
158 |
]. |
|
159 |
^ collectBlock value:(inStream next) |
|
2673
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
160 |
! |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
161 |
|
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
162 |
nextOrNil |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
163 |
|ch| |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
164 |
|
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
165 |
ch := inStream nextOrNil. |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
166 |
ch notNil ifTrue:[ |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
167 |
collectBlock value:ch |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
168 |
]. |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
169 |
^ ch |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
170 |
|
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
171 |
"Created: / 26-10-2011 / 17:29:01 / cg" |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
172 |
! |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
173 |
|
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
174 |
nextPeek |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
175 |
self next. |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
176 |
^ self peek |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
177 |
|
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
178 |
"Created: / 26-10-2011 / 17:25:16 / cg" |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
179 |
! |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
180 |
|
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
181 |
peek |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
182 |
^ inStream peek |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
183 |
|
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
184 |
"Created: / 26-10-2011 / 17:24:59 / cg" |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
185 |
! |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
186 |
|
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
187 |
peekOrNil |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
188 |
^ inStream peekOrNil |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
189 |
|
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
190 |
"Created: / 26-10-2011 / 17:25:32 / cg" |
5247 | 191 |
! ! |
192 |
||
193 |
!CollectingReadStream methodsFor:'stream protocol'! |
|
2673
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
194 |
|
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
195 |
position |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
196 |
^ inStream position |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
197 |
|
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
198 |
"Created: / 26-10-2011 / 17:25:08 / cg" |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
199 |
! |
ea71dab56953
fixes to make JavaScript file reader happier
Claus Gittinger <cg@exept.de>
parents:
2365
diff
changeset
|
200 |
|
4951 | 201 |
position:newPos |
202 |
inStream position:newPos |
|
203 |
||
204 |
"Created: / 26-05-2019 / 00:57:19 / Claus Gittinger" |
|
2363 | 205 |
! ! |
206 |
||
207 |
!CollectingReadStream class methodsFor:'documentation'! |
|
208 |
||
209 |
version_CVS |
|
4330 | 210 |
^ '$Header$' |
2363 | 211 |
! ! |
3083 | 212 |