Introduction

... general text, maybe partly from slides/paper ....

Supporting XOTcl 1 in XOTcl 2

... multiple object systems ....

::xotcl::use xotcl1

::xotcl::use xotcl2

describe, what ::xotcl::use does

XOTcl 1 Idioms in XOTcl 2

Defining Objects and Classes

XOTcl 1XOTcl 2
Class ClassName Class create ClassName
Object ObjectName Object create ObjectName
::xotcl::Class ClassName ::xotcl2::Class create ClassName
::xotcl::Object ObjectName ::xotcl2::Object create ObjectName

Defining Methods

XOTcl 1XOTcl 2
Class C
C instproc foo args {...}
C proc bar args {...}
 Class create C {
  .method foo args {...}
  .object method bar args {...}
}
Class create C
C method foo args {...}
C object method bar args {...}
Object o
o set x 1
o proc foo args {...}
 Object create o {
  set .x 1
  .method foo args {...}
}
Object create o
o eval {set .x 1}
#    ::xotcl::setinstvar o x 1
o method foo args {...}

Invoking Methods

XOTcl 1XOTcl 2
Class C
C instproc foo args {...}
C instproc bar args {
  my foo 1 2 3 ;# invoke own method
  o baz        ;# invoke others method
}
Object o
o proc baz {} {...}
 Class create C {
  .method foo args {...}
  .method bar args {
     .foo 1 2 3 ;# invoke own method
     o baz      ;# invoke others method
  }
}
Object create o {
  .method baz {} {...}
}

Accessing Instance Variables from Method Bodies

XOTcl 1XOTcl 2
my set varname value set .varname value
set newVar [my set otherVar] set newVar [set .otherVar]
set newVar ${.otherVar}
my instvar newVar
set newVar value 		set .newVar value
my exists varname info .varname

Accessing Instance Variables of other Objects

XOTcl 1XOTcl 2
obj set varname value obj eval [list set .varname value]
set newVar [obj set otherVar] set newVar [obj eval {set .otherVar}]
obj instvar newVar
set newVar value 		::xotcl::importvar obj newVar
set newVar value
obj exists varname obj eval {info exists .varname}

Object Parameters

Method Parameters

Introspection

List methods defined by objects

XOTcl 1XOTcl 2
obj info commands ?pattern? obj info methods ?pattern?
obj info parametercmd ?pattern? obj info methods -methodtype setter ?pattern?
obj info procs ?pattern? obj info methods -methodtype scripted ?pattern?
n.a. obj info methods -methodtype alias ?pattern?
n.a. obj info methods -methodtype forwarder ?pattern?
n.a. obj info methods -methodtype object ?pattern?
n.a. obj info methods -callprotection public|protected ...

List methods defined by classes

cls info instcommands ?pattern? cls info methods ?pattern?
cls info instparametercmd ?pattern? cls info methods -methodtype setter ?pattern?
cls info instprocs ?pattern? cls info methods -methodtype scripted ?pattern?
n.a. cls info methods -methodtype alias ?pattern?
n.a. cls info methods -methodtype forwarder ?pattern?
n.a. cls info methods -methodtype object ?pattern?
n.a. cls info methods -callprotection public|protected ...

List class object specific methods

cls info commands ?pattern? cls object info methods ?pattern?
cls info parametercmd ?pattern? cls object info methods -methodtype setter ?pattern?
cls info procs ?pattern? cls object info methods -methodtype scripted ?pattern?
n.a. cls object info methods -methodtype alias ?pattern?
n.a. cls object info methods -methodtype forwarder ?pattern?
n.a. cls object info methods -methodtype object ?pattern?
n.a. cls object info methods -callprotection public|protected ...

List callable methods

XOTcl 1XOTcl 2
obj info methods ?pattern? obj info callable ?pattern?
n.a. # list only application specific methods
obj info callable -application

List object/class where some method is defined

XOTcl 1XOTcl 2
obj procsearch methodName obj info callable -which methodName

List definition of scripted methods defined by classes

XOTcl 1XOTcl 2
cls info instbody methodName cls info method body methodName
cls info instargs methodName cls info method args methodName
cls info instnonposargs methodName cls info method parameter methodName
cls info instdefault methodName cls info method parameter methodName
cls info instpre methodName cls info method precondition methodName
cls info instpost methodName cls info method postcondition methodName
n.a. cls info method definition methodName

List definition of scripted object specific methods

XOTcl 1XOTcl 2
obj info body methodName obj info method body methodName
obj info args methodName obj info method args methodName
obj info nonposargs methodName obj info method parameter methodName
obj info default methodName obj info method parameter methodName
obj info pre methodName obj info method precondition methodName
obj info post methodName obj info method postcondition methodName
n.a. obj info method definition methodName

For definition of class object specific methods, use modifier object as shown in examples above.

List definition of methods defined by aliases, setters or forwarders

List fully qualified name of method

XOTcl 1XOTcl 2
n.a. obj info method definition methodName
n.a. cls info method definition methodName

List type of a method

XOTcl 1XOTcl 2
n.a. obj info method name methodName
n.a. cls info method name methodName

Predefined Methods

Dispatch, Aliases, etc.

Assertions

XOTcl 1XOTcl 2
n.a. obj info method type methodName
n.a. cls info method type methodName

Method Protection

Last modified: Tue Jan 5 19:00:20 CET 2010
XOTcl 1XOTcl 2
obj check checkptions ::xotcl::assertion obj check checkptions
obj info check ::xotcl::assertion obj check
obj invar conditions ::xotcl::assertion obj object-invar conditions
obj info invar ::xotcl::assertion obj object-invar
cls instinvar conditions ::xotcl::assertion cls class-invar conditions
cls info instinvar ::xotcl::assertion cls class-invar
cls invar conditions ::xotcl::assertion cls object-invar conditions
cls info invar ::xotcl::assertion cls object-invar