Xotcl September 2004

xotcl@alice.wu.ac.at

9 participants
15 discussions

[self class] inside [eval]
by Kristoffer Lawson 14 Sep '04

14 Sep '04

Still looking for an official explanation for the operations of [eval] (and other stuff I posted), but here's another one. The code follows: package require XOTcl 1.3 namespace import xotcl::* Class Foo -parameter doors Foo instproc init {req} { puts $req } Object ob set newOb [Foo new -childof ob hello -doors 4] puts "Doors: [$newOb doors]" $newOb proc doStuff {} { puts "class: [self class]" set newOb [[self class] new -childof [self] whatevah -doors 3] puts "Doors: [$newOb doors]" } $newOb doStuff #$newOb eval { # doStuff #} This version correctly states that the class for [self class] is an empty string. However, if I comment out the "eval" version and use it instead, [self class] gives me "::xotcl::Object". / http://www.fishpool.com/~setok/

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Bug with obs in namespaces
by Kristoffer Lawson 09 Sep '04

09 Sep '04

This could be related to what others have reported but: [~/svn/codebase/trunk/tcl] package require XOTcl 1.3 [~/svn/codebase/trunk/tcl] namespace import xotcl::* [~/svn/codebase/trunk/tcl] namespace eval foo { >Class Foo >Foo instproc blah {} {puts jou} >Foo proc bar {} {puts bar} >} [~/svn/codebase/trunk/tcl] namespace delete foo called Tcl_FindHashEntry on deleted table Abort / http://www.fishpool.com/~setok/

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Question on [eval] method
by Kristoffer Lawson 06 Sep '04

06 Sep '04

It states that object-local variables are accessible as normal Tcl variables inside the script, but what about methods? I noticed the following: % package require XOTcl 1.1 ::ob % ob proc pomous {} {puts pomous} % ob eval pomous pomous % xotcl::Class JOu ::JOu % JOu instproc uoah {} {puts jeah} % JOu ob ::ob % ob eval uoah invalid command name "uoah" Is that guaranteed to work at all? Is there any proper way to get what I want to do? The reason I'm doing this is because I'm implementing a type of binary reading command which looks something like this: buynary::scan $clusterDat { option endian little format { object root { short objNum short $objNum objIDs } object * children { short 3 cellID short addObjNum short $addObjNum addObjIDs short rmObjNum short $rmObjNum rmObjIDs } } } It uses XOTcl to build a representation of the binary data as objects. I made a version which parses the format manually, but for performance reasons I'd like Tcl to do that. Ie. to have, in a particular context, commands such as 'format', 'short', 'object' etc. Then I could just [eval] the whole nonsense and get all the performance benefits that has to offer. One could always do this using namespaces, but that would be really annoying as I've started off with XOTcl for this. / http://www.fishpool.com/~setok/

2 2

Compilation with free VC++
by michael.heca＠email.cz 03 Sep '04

03 Sep '04

Start from http://wiki.tcl.tk/11431 Use modified config.vc. Please add $(INSTALLDIR) to $(TCLSH) .\installWin.tcl call in Makefile.vc Michael Heca

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alloc error
by michael.heca＠email.cz 02 Sep '04

02 Sep '04

Hi, I found error in running XOTclIDE with new xotcl from version 1.3.0. Error is raised by similar code: --------------------------------------------- #!/usr/bin/tclsh package require XOTcl namespace import ::xotcl::* Class NS Class NS::Main NS::Main proc m1 {} { my m2 } NS::Main proc m2 {} { namespace eval :: Object crash } NS::Main m1 --------------------------------------------- Error is: --------------------------------------------- couldn't find result of alloc ::xotcl::Object ::xotcl::Class->create ::xotcl::Object ::xotcl::Class->unknown invoked from within "Object crash" (in namespace eval "::" script line 1) invoked from within "namespace eval :: Object crash" (procedure "m2" line 3) ::NS::Main->m2 invoked from within "my m2" (procedure "m1" line 3) ::NS::Main->m1 invoked from within "NS::Main m1" (file "T:\home\heca\test\xotcl\e130.tcl" line 18) --------------------------------------------- If i directly call NS::Main m2, everything is ok. It is xotcl error or problem is in this code? Michael Heca

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Xotcl September 2004