1tool(n) Standardized OO Framework for development tool(n)
2______________________________________________________________________________
6
8 tool - TclOO Library (TOOL) Framework
9
11 package require Tcl 8.6
12 package require sha1
14 package require dicttool
16 package require oo::meta
18 package require oo::dialect
20 tool::define class_method arglist body
22 tool::define array name contents
24 tool::define array_ensemble methodname varname ?cases?
26 tool::define dict_ensemble methodname varname ?cases?
28 tool::define method methodname arglist body
30 tool::define option name dictopts
32 tool::define property ?branch? field value
34 tool::define variable name value
36 object cget option
38 object configure ?keyvaluelist?
40 object configure field value ?field? ?value? ?...?
42 object configurelist ?keyvaluelist?
44 object forward stub forward
46 object graft stub forward
48 object InitializePublic
50 object Eval_Script ?script?
52 object Option_Default field
54______________________________________________________________________________
56
58 This module implements the Tcl Object Oriented Library framework, or
59 TOOL. It is intended to be a general purpose framework that is useable
60 in its own right, and easily extensible.
61 TOOL defines a metaclass with provides several additional keywords to
63 the TclOO description langauge, default behaviors for its consituent
64 objects, and top-down integration with the capabilities provided by the
65 oo::meta package.
66 The TOOL metaclass was build with the oo::dialect package, and thus can
68 be used as the basis for additional metaclasses. As a metaclass, TOOL
69 has it's own "class" class, "object" class, and define namespace.
70 package require tool
73 # tool::class workds just like oo::class
75 tool::class create myclass {
76 }
77 # tool::define works just like oo::define
79 tool::define myclass method noop {} {}
80 # tool::define and tool::class understand additional keywords
82 tool::define myclass array_ensemble mysettings mysettings {}
83 # And tool interoperates with oo::define
85 oo::define myclass method do_something {} { return something }
86 # TOOL and TclOO objects are interchangeable
88 oo::class create myooclass {
89 superclass myclass
90 }
91 Several manual pages go into more detail about specific keywords and
94 methods.
95 tool::array_ensemble
97 tool::dict_ensemble
99 tool::method_ensemble
101 tool::object
103 tool::option_handling
105
107 TOOL adds new (or modifies) keywords used in the definitions of
108 classes. However, the new keywords are only available via calls to
109 tool::class create or tool::define
110 tool::define class_method arglist body
112 Defines a method for the class object itself. This method will
113 be passed on to descendents of the class, unlike self method.
114 tool::define array name contents
116 Declares a variable name which will be initialized as an array,
117 populated with contents for objects of this class, as well as
118 any objects for classes which are descendents of this class.
119 tool::define array_ensemble methodname varname ?cases?
121 Declares a method ensemble methodname which will control access
122 to variable varname. Cases are a key/value list of method names
123 and bodies which will be overlaid on top of the standard tem‐
124 plate. See tool::array_ensemble.
125 One method name is reserved: initialize. initialize Declares the
127 initial values to be populated in the array, as a key/value
128 list, and will not be expressed as a method for the ensemble.
129 tool::define dict_ensemble methodname varname ?cases?
131 Declares a method ensemble methodname which will control access
132 to variable varname. Cases are a key/value list of method names
133 and bodies which will be overlaid on top of the standard tem‐
134 plate. See tool::dict_ensemble.
135 One method name is reserved: initialize. initialize Declares the
137 initial values to be populated in the array, as a key/value
138 list, and will not be expressed as a method for the ensemble.
139 tool::define method methodname arglist body
141 If methodname contains ::, the method is considered to be part
142 of a method ensemble. See tool::method_ensembles. Otherwise this
143 command behaves exactly like the standard oo::define method com‐
144 mand.
145 tool::define option name dictopts
147 Declares an option. dictopts is a key/value list defining param‐
148 eters for the option. See tool::option_handling.
149 tool::class create myclass {
152 option color {
153 post-command: {puts [list %self%'s %field% is now %value%]}
154 default: green
155 }
156 }
157 myclass create foo
158 foo configure color purple
159 > foo's color is now purple
160 tool::define property ?branch? field value
163 Defines a new leaf in the class metadata tree. With no branch,
164 the leaf will appear in the const section, accessible by either
165 the object's property method, or via oo::meta::info class get
166 const field:
167 tool::define variable name value
169 Declares a variable name which will be initialized with the
170 value value for objects of this class, as well as any objects
171 for classes which are descendents of this class.
172
174 The TOOL object mother of all classes defines several methods to
175 enforces consistent behavior throughout the framework.
176 object cget option
178 Return the value of this object's option option. If the property
179 options_strict is true for this class, calling an option which
180 was not declared by the option keyword will throw an error. In
181 all other cases if the value is present in the object's options
182 array that value is returned. If it does not exist, the object
183 will attempt to retrieve a property of the same name.
184 object configure ?keyvaluelist?
186 object configure field value ?field? ?value? ?...?
188 This command will inject new values into the objects options
189 array, according to the rules as set forth by the option
190 descriptions. See tool::option_handling for details. configure
191 will strip leading -'s off of field names, allowing it to behave
192 in a quasi-backward compatible manner to tk options.
193 object configurelist ?keyvaluelist?
195 This command will inject new values into the objects options
196 array, according to the rules as set forth by the option
197 descriptions. This command will perform validation and alternate
198 storage rules. It will not invoke trigger rules. See
199 tool::option_handling for details.
200 object forward stub forward
202 A passthrough to oo:objdefine [self] forward
203 object graft stub forward
205 Delegates the <stub> method to the object or command designated
206 by forward
207 tool::object create A
210 tool::object create B
211 A graft buddy B
212 A configure color red
213 B configure color blue
214 A cget color
215 > red
216 A <buddy> cget color
217 > blue
218
221 object InitializePublic
222 Consults the metadata for the class to ensure every array,
223 option, and variable which has been declared but not initialized
224 is initialized with the default value. This method is called by
225 the constructor and the morph method. It is safe to invoke mul‐
226 tiple times.
227 object Eval_Script ?script?
229 Executes a block of text within the namespace of the object.
230 Lines that begin with a # are ignored as comments. Commands that
231 begin with :: are interpreted as calling a global command. All
232 other Tcl commands that lack a "my" prefix are given one, to
233 allow the script to exercise internal methods. This method is
234 intended for configuration scripts, where the object's methods
235 are intepreting a domain specific language.
236 tool::class myclass {
239 constructor script {
240 my Eval_Script $script
241 }
242 method node {nodename info} {
243 my variable node
244 dict set node $nodename $info
245 }
246 method get {args} {
247 my variable node
248 return [dict get $node $args]
249 }
250 }
251 myclass create movies {
252 # This block of code is executed by the object
253 node {The Day the Earth Stood Still} {
254 date: 1952
255 characters: {GORT Klatoo}
256 }
257 }
258 movies get {The Day the Earth Stood Still} date:
259 > 1952
260 object Option_Default field
263 Computes the default value for an option. See tool::option_han‐
264 dling.
265
267 Sean Woods
268
270 This document, and the package it describes, will undoubtedly contain
271 bugs and other problems. Please report such in the category tcloo of
272 the Tcllib Trackers [http://core.tcl.tk/tcllib/reportlist]. Please
273 also report any ideas for enhancements you may have for either package
274 and/or documentation.
275 When proposing code changes, please provide unified diffs, i.e the out‐
277 put of diff -u.
278 Note further that attachments are strongly preferred over inlined
280 patches. Attachments can be made by going to the Edit form of the
281 ticket immediately after its creation, and then using the left-most
282 button in the secondary navigation bar.
283
285 TOOL, TclOO, framework
286
288 TclOO
289
291 Copyright (c) 2015 Sean Woods <yoda@etoyoc.com>
292tcllib 0.4.2 tool(n)