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IDProjectCategoryView StatusDate SubmittedLast Update
0005084Part 01: TTCN-3 Core LanguageClarificationpublic16-04-2009 14:1215-07-2009 14:29
ReporterGyorgy Rethy 
Assigned ToIna Schieferdecker 
PrioritynormalSeverityminorReproducibilityhave not tried
StatusclosedResolutionfixed 
PlatformOSOS Version
Product Version 
Target Versionv4.2.1 (published 2010-07)Fixed in Versionv4.2.1 (published 2010-07) 
Summary0005084: Use of the __SCOPE__ macro
DescriptionAs currently defined, the __SCOPE__ TTCN-3 macro shall return the identifyer of the named scope unit it is used in. However, it raises the problem of using the macro in global templates. Global parameterized templates behave like scope units as formal parameter names are local names obeying to scoping rules. But parameterized templates are not defined as scope units today.

As a consequence it is not possible to get the template name with the __SCOPE__ macro. See the example below:
template myType t_MyTemplate (charstring p_char := __SCOPE__) { f1 := p_char,...}

The module name can be obtained by using __MODULE__, therefore it would be practical if __SCOPE__ returned the name of the template and not the module name.

Proposal: define (at least parameterized) templates as scope units and add templates to $D.4 as
"...basic scope units of TTCN-3 are module definitions part, module control part, component types, functions, altsteps, test cases, statement blocks and templates. ...
(g) a template name, if the lowest named scope is a template definition."
TagsNo tags attached.
Clause Reference(s)5.2, D.4
Source (company - Author)     
Attached Filesdoc file icon CR5084_SCOPE_macro.doc [^] (26,624 bytes) 22-04-2009 16:06
doc file icon CR5084_SCOPE_macro_v2.doc [^] (247,296 bytes) 03-07-2009 15:07
doc file icon CR5084_SCOPE_macro_v3.doc [^] (260,096 bytes) 06-07-2009 12:49
ppt file icon CR5084_SCOPE_macro_Figure.ppt [^] (43,520 bytes) 08-07-2009 10:00
? file icon scope.ttcn3 [^] (1,359 bytes) 08-07-2009 17:20
? file icon def.ttcn3 [^] (1,371 bytes) 08-07-2009 17:21
? file icon scope_v2.ttcn3 [^] (1,848 bytes) 10-07-2009 12:30
doc file icon CR5084_SCOPE_macro_v4.doc [^] (295,936 bytes) 10-07-2009 12:36
ppt file icon CR5084_SCOPE_macro_Figure_v2.ppt [^] (31,232 bytes) 10-07-2009 12:36
doc file icon CR5084_SCOPE_macro_v5.doc [^] (298,496 bytes) 10-07-2009 14:44

- Relationships
related to 0005268closedIna Schieferdecker Definition prepocessing macro: __DEFINITION__ 

-  Notes
(0008511)
Ina Schieferdecker (reporter)
20-04-2009 11:29

 One could also think about types as scope units. All potential scope units need to be checked.
(0008543)
Tibor Csöndes (reporter)
22-04-2009 16:09

 Changes uploaded based on the proposal.
Correct, standalone example:
template charstring t_MyTemplate (charstring p_char := __SCOPE__) := p_char;
(0008833)
Tibor Csöndes (reporter)
03-07-2009 15:10

 Version 2 uploaded. Templates and structured types included as a new scope unit. Figure, "Hierarchy of scope units" redraw, examples included into __SCOPE__ macro section.
(0008841)
Gyorgy Rethy (reporter)
06-07-2009 12:49

 I'm at figure 1. Thinking about what to draw below Templates and Types. Template fields may be of structured typed as well but are they scope units? For conssitency they should be (though at this moment I cannot see a practical consequence, except more clarity).
 
A structured type can be defined embedded within other structured types, this shall be drawn on the figure (just an embedded structured type below structured type, embedded structured type below embedded structured type, dashed line.

Textual description of templates and types as scope units is missing from above the figure.

See the rest in CR5084_SCOPE_macro_v3.doc.

I noticed that the figure cannot be edited if embedded this way. This may be a pro or a cons. If we find a good place to store it for next editions, it is a pro. If not, they should be embedded as Powerpoint objects.
(0008858)
Tibor Csöndes (reporter)
08-07-2009 09:59

 It is possible to edit the figure because this is an embedded .ppt object: right click on the object -> Presentation Object -> Edit. In addition I have uploaded the original PowerPoint slide.
(0008877)
Tibor Csöndes (reporter)
08-07-2009 17:21

 Uploaded scope.ttcn3 and def.ttcn3 are working examples for __SCOPE__ and __DEF__ macro.
(0008888)
Tibor Csöndes (reporter)
10-07-2009 12:30
edited on: 10-07-2009 12:35

 After our discussion the decision is the following:
- do not introduce __DEF__ macro only __SCOPE__
- we will use unqualified names (only "control" and not "modulename.control")
- new scope units: templates and user-defined types, i.e. basic types like integer, charstring are not scope units, but type restrictions of a basic type shall be a scope unit.

Based on our discussion new examples (scope_v2.ttcn3) created and uploaded.
New version (CR5084_SCOPE_macro_v4.doc) also uploaded.
(0008890)
Gyorgy Rethy (reporter)
10-07-2009 14:08

 CR5084_SCOPE_macro_v5.doc:
Note 2 of D.4 deleted, Example 2 is extended to show also a default value of a formal parameter, plus a few editorials. Otherwise OK with me.
(0008891)
Tibor Csöndes (reporter)
10-07-2009 14:46

 It's OK with me!

- Issue History
Date Modified Username Field Change
16-04-2009 14:12 Gyorgy Rethy New Issue
16-04-2009 14:12 Gyorgy Rethy Clause Reference(s) => 5.2, D.4
16-04-2009 14:12 Gyorgy Rethy Source (company - Author) =>
20-04-2009 11:29 Ina Schieferdecker Note Added: 0008511
20-04-2009 11:30 Ina Schieferdecker Project TTCN-3 Change Requests => Part 01: TTCN-3 Core Language
20-04-2009 11:30 Ina Schieferdecker Assigned To => Tibor Csöndes
20-04-2009 11:30 Ina Schieferdecker Status new => assigned
20-04-2009 11:30 Ina Schieferdecker Category TTCN-3 Core Language => Clarification
20-04-2009 11:30 Ina Schieferdecker Target Version => Edition 4.2.1 (not yet published)
22-04-2009 16:06 Tibor Csöndes File Added: CR5084_SCOPE_macro.doc
22-04-2009 16:09 Tibor Csöndes Note Added: 0008543
03-07-2009 15:07 Tibor Csöndes File Added: CR5084_SCOPE_macro_v2.doc
03-07-2009 15:10 Tibor Csöndes Note Added: 0008833
03-07-2009 15:10 Tibor Csöndes Assigned To Tibor Csöndes => Gyorgy Rethy
06-07-2009 12:49 Gyorgy Rethy Note Added: 0008841
06-07-2009 12:49 Gyorgy Rethy File Added: CR5084_SCOPE_macro_v3.doc
06-07-2009 12:49 Gyorgy Rethy Assigned To Gyorgy Rethy => Tibor Csöndes
08-07-2009 09:59 Tibor Csöndes Note Added: 0008858
08-07-2009 10:00 Tibor Csöndes File Added: CR5084_SCOPE_macro_Figure.ppt
08-07-2009 13:20 Tibor Csöndes File Added: CR5084_SCOPE.ttcn
08-07-2009 13:22 Tibor Csöndes Note Added: 0008868
08-07-2009 15:08 Ina Schieferdecker Note Added: 0008874
08-07-2009 15:08 Ina Schieferdecker File Added: CR5084_scope.ttcn3
08-07-2009 16:46 Ina Schieferdecker File Deleted: CR5084_scope.ttcn3
08-07-2009 16:48 Ina Schieferdecker File Added: scope.ttcn3
08-07-2009 17:02 Tibor Csöndes Relationship added related to 0005268
08-07-2009 17:13 Ina Schieferdecker File Deleted: scope.ttcn3
08-07-2009 17:20 Tibor Csöndes File Deleted: CR5084_SCOPE.ttcn
08-07-2009 17:20 Tibor Csöndes File Added: scope.ttcn3
08-07-2009 17:21 Tibor Csöndes File Added: def.ttcn3
08-07-2009 17:21 Tibor Csöndes Note Added: 0008877
09-07-2009 09:33 Ina Schieferdecker Note Deleted: 0008868
09-07-2009 09:33 Ina Schieferdecker Note Deleted: 0008874
10-07-2009 12:30 Tibor Csöndes Note Added: 0008888
10-07-2009 12:30 Tibor Csöndes File Added: scope_v2.ttcn3
10-07-2009 12:35 Tibor Csöndes Note Edited: 0008888
10-07-2009 12:36 Tibor Csöndes File Added: CR5084_SCOPE_macro_v4.doc
10-07-2009 12:36 Tibor Csöndes File Added: CR5084_SCOPE_macro_Figure_v2.ppt
10-07-2009 12:39 Tibor Csöndes Assigned To Tibor Csöndes => Gyorgy Rethy
10-07-2009 14:08 Gyorgy Rethy Note Added: 0008890
10-07-2009 14:09 Gyorgy Rethy File Added: CR5084_SCOPE_macro_v5.doc
10-07-2009 14:09 Gyorgy Rethy Assigned To Gyorgy Rethy => Tibor Csöndes
10-07-2009 14:09 Gyorgy Rethy Resolution open => fixed
10-07-2009 14:44 Gyorgy Rethy File Deleted: CR5084_SCOPE_macro_v5.doc
10-07-2009 14:44 Gyorgy Rethy File Added: CR5084_SCOPE_macro_v5.doc
10-07-2009 14:46 Tibor Csöndes Note Added: 0008891
10-07-2009 14:46 Tibor Csöndes Assigned To Tibor Csöndes => Ina Schieferdecker
10-07-2009 14:46 Tibor Csöndes Status assigned => resolved
15-07-2009 14:29 Ina Schieferdecker Status resolved => closed
15-07-2009 14:29 Ina Schieferdecker Fixed in Version => Edition 4.2.1 (not yet published)

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