tool - TclOO Library (TOOL) Framework
Contents
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Category
TclOO
Copyright
Copyright (c) 2015 Sean Woods <yoda@etoyoc.com>
tcllib 0.8 tool(3tcl)
Description
This module implements the Tcl Object Oriented Library framework, or TOOL. It is intended to be a general
purpose framework that is useable in its own right, and easily extensible.
TOOL defines a metaclass with provides several additional keywords to the TclOO description langauge,
default behaviors for its consituent objects, and top-down integration with the capabilities provided by
the oo::meta package.
The TOOL metaclass was build with the oo::dialect package, and thus can be used as the basis for
additional metaclasses. As a metaclass, TOOL has it's own "class" class, "object" class, and define
namespace.
package require tool
# tool::class workds just like oo::class
tool::class create myclass {
}
# tool::define works just like oo::define
tool::define myclass method noop {} {}
# tool::define and tool::class understand additional keywords
tool::define myclass array_ensemble mysettings mysettings {}
# And tool interoperates with oo::define
oo::define myclass method do_something {} { return something }
# TOOL and TclOO objects are interchangeable
oo::class create myooclass {
superclass myclass
}
Several manual pages go into more detail about specific keywords and methods.
tool::array_ensembletool::dict_ensembletool::method_ensembletool::objecttool::option_handlingKeywords
TOOL, TclOO, framework
Name
tool - TclOO Library (TOOL) Framework
Private Object Methods
objectInitializePublic
Consults the metadata for the class to ensure every array, option, and variable which has been
declared but not initialized is initialized with the default value. This method is called by the
constructor and the morph method. It is safe to invoke multiple times.
objectEval_Script ?script?
Executes a block of text within the namespace of the object. Lines that begin with a # are ignored
as comments. Commands that begin with :: are interpreted as calling a global command. All other
Tcl commands that lack a "my" prefix are given one, to allow the script to exercise internal
methods. This method is intended for configuration scripts, where the object's methods are
intepreting a domain specific language.
tool::class myclass {
constructor script {
my Eval_Script $script
}
method node {nodename info} {
my variable node
dict set node $nodename $info
}
method get {args} {
my variable node
return [dict get $node $args]
}
}
myclass create movies {
# This block of code is executed by the object
node {The Day the Earth Stood Still} {
date: 1952
characters: {GORT Klatoo}
}
}
movies get {The Day the Earth Stood Still} date:
> 1952
objectOption_Defaultfield
Computes the default value for an option. See tool::option_handling.
Public Object Methods
The TOOL object mother of all classes defines several methods to enforces consistent behavior throughout
the framework.
objectcgetoption
Return the value of this object's option option. If the propertyoptions_strict is true for this
class, calling an option which was not declared by the option keyword will throw an error. In all
other cases if the value is present in the object's options array that value is returned. If it
does not exist, the object will attempt to retrieve a property of the same name.
objectconfigure ?keyvaluelist?
objectconfigurefieldvalue ?field? ?value? ?...?
This command will inject new values into the objects options array, according to the rules as set
forth by the option descriptions. See tool::option_handling for details. configure will strip
leading -'s off of field names, allowing it to behave in a quasi-backward compatible manner to tk
options.
objectconfigurelist ?keyvaluelist?
This command will inject new values into the objects options array, according to the rules as set
forth by the option descriptions. This command will perform validation and alternate storage
rules. It will not invoke trigger rules. See tool::option_handling for details.
objectforwardstubforward
A passthrough to oo:objdefine[self]forwardobjectgraftstubforward
Delegates the <stub> method to the object or command designated by forward
tool::object create A
tool::object create B
A graft buddy B
A configure color red
B configure color blue
A cget color
> red
A <buddy> cget color
> blue
Synopsis
package require Tcl8.69
package require sha1
package require dicttool
package require oo::meta
package require oo::dialect
tool::define class_methodarglistbody
tool::define arraynamecontents
tool::define array_ensemblemethodnamevarname ?cases?
tool::define dict_ensemblemethodnamevarname ?cases?
tool::define methodmethodnamearglistbody
tool::define optionnamedictopts
tool::define property ?branch? fieldvalue
tool::define variablenamevalueobjectcgetoptionobjectconfigure ?keyvaluelist?
objectconfigurefieldvalue ?field? ?value? ?...?
objectconfigurelist ?keyvaluelist?
objectforwardstubforwardobjectgraftstubforwardobjectInitializePublicobjectEval_Script ?script?
objectOption_Defaultfield
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