736

</div></div>

737

<div class="paragraph"><p>The Next Scripting Language (NX) is a successor of XOTcl 1 and is

738

based on 10 years of experience with XOTcl in projects containing

739

several hundert thousand lines of code. While XOTcl was the first

739

several hundert thousand lines of code. While XOTcl was the first

740

language designed to provide language support for design patterns, the

741

focus of the Next Scripting Framework and NX are on combining this

742

with Language Oriented Programming. In many respects, NX was designed

751

programming. The Next Scripting Frameworks provides C-level support

752

for defining and hosting multiple object systems in a single Tcl

753

interpreter. The whole definition of NX is fully scripted

754

(e.g. defined in <tt>nx.tcl</tt>). The Next Scripting Framework is shipped

754

(e.g. defined in <tt>nx.tcl</tt>). The Next Scripting Framework is shipped

755

with three language definitions, containing NX and XOTcl 2. Most of

756

the existing XOTcl 1 programs can be used without modification in the

757

Next Scripting Framework by using XOTcl 2. The Next Scripting

817

818

<li>

819

<p>

820

It is possible to use NX <tt>alias</tt> to register methods

820

It is possible to use NX <tt>alias</tt> to register methods

821

under arbitrary names for arbitrary objects or classes.

822

</p>

823

</li>

831

</li>

832

<li>

833

<p>

834

One can invoke in NX fully qualified methods to invoke

834

One can invoke in NX fully qualified methods to invoke

835

methods outside the precedence path.

836

</p>

837

</li>

846

<li>

847

<p>

848

One can use in NX the same interface to query (introspect)

849

C-implemented and scripted methods/commands.

849

C-implemented and scripted methods/commands.

850

</p>

851

</li>

852

</ol></div>

1862

.nx-variable {color: #AF663F; font-weight: normal; font-style: normal;}

1863

</style>

1864

<pre class='nx'><span class='nx-comment'># XOTcl provides only method deletion with

1865

</span><span class='nx-comment'># the equivalent of Tcl's "proc foo {} {}"

1865

</span><span class='nx-comment'># the equivalent of Tcl's "proc foo {} {}"

1866

</span><span class='nx-placeholder'>/obj/</span> <span class='nx-keyword'>proc</span> foo {} {}

1867

<span class='nx-placeholder'>/cls/</span> instproc foo {} {}

1868

1987

</li>

1988

<li>

1989

<p>

1990

Set or get instance variables via <tt>my set varName ?value?</tt> or other

1990

Set or get instance variables via <tt>my set varName ?value?</tt> or other

1991

variable accessing methods registered on <tt>xotcl::Object</tt> such as

1992

<tt>append</tt>, <tt>lappend</tt>, <tt>incr</tt>, etc.

1993

</p>

1994

</li>

1995

<li>

1996

<p>

1997

Register same-named accessor functions and set/get values

1998

of instance variables via <tt>my varName ?value?</tt>

1998

of instance variables via <tt>my varName ?value?</tt>

1999

</p>

2000

</li>

2001

</ul></div>

2896

</style>

2897

<pre class='nx'><span class='nx-comment'># Predefined value constraints:

2898

</span><span class='nx-comment'># object, class, alnum, alpha, ascii, boolean,

2899

</span><span class='nx-comment'># control, digit, double, false, graph, integer,

2900

</span><span class='nx-comment'># lower, parameter, print, punct, space, true,

2899

</span><span class='nx-comment'># control, digit, double, false, graph, integer,

2900

</span><span class='nx-comment'># lower, parameter, print, punct, space, true,

2901

</span><span class='nx-comment'># upper, wordchar, xdigit

2902

</span><span class='nx-comment'>#

2903

</span><span class='nx-comment'># User defined value constraints are possible.

2906

</span><span class='nx-comment'>#

2907

</span><span class='nx-comment'># Define a boolean property and an integer

2908

</span><span class='nx-comment'># property with a default firstly via "properties",

2909

</span><span class='nx-comment'># then with multiple "property" statements.

2909

</span><span class='nx-comment'># then with multiple "property" statements.

2910

</span>

2911

<span class='nx-keyword'>Class</span> <span class='nx-keyword'>create</span> Foo -properties {

2912

a:boolean

4391

</span><span class='nx-comment'># -source might be all|application|baseclasses

4392

</span><span class='nx-comment'># -type is the class of the slot object

4393

</span>

4394

<span class='nx-placeholder'>/obj/</span> <span class='nx-keyword'>info</span> <span class='nx-keyword'>lookup</span> slots ?-type ...? ?-<span class='nx-keyword'>source</span> ... <span class='nx-placeholder'>?pattern?</span>

4394

<span class='nx-placeholder'>/obj/</span> <span class='nx-keyword'>info</span> <span class='nx-keyword'>lookup</span> slots <span class='nx-placeholder'>?-type ...?</span> ?-<span class='nx-keyword'>source</span> ... <span class='nx-placeholder'>?pattern?</span>

4395

4396

<span class='nx-comment'># Returns list of slot objects</span></pre></div></div></div></td>

4397

</tr>

4952

<tt>class</tt> as shown in examples above.</p></div>

4953

</div>

4954

4955

<h4 id="_list_slots">2.6.9. List Slots</h4>

4955

<h4 id="_list_slots_and_their_definitions">2.6.9. List Slots and their definitions</h4>

4956

4957

<table rules="all"

4958

width="100%"

4991

.nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}

4992

.nx-variable {color: #AF663F; font-weight: normal; font-style: normal;}

4993

</style>

4994

<pre class='nx'><span class='nx-comment'># Return list of slots objects defined on the

4994

<pre class='nx'><span class='nx-comment'># Return list of slots objects defined on the

4995

</span><span class='nx-comment'># object or class

4996

</span><span class='nx-comment'>#

4997

</span><span class='nx-comment'># -source might be all|application|baseclasses

4998

</span><span class='nx-comment'># -type is the class of the slot object

4999

</span><span class='nx-comment'># -closure includes slots of superclasses

5000

</span>

5001

<span class='nx-placeholder'>/obj/</span> <span class='nx-keyword'>info</span> slots ?-type ...? <span class='nx-placeholder'>?pattern?</span>

5002

<span class='nx-placeholder'>/cls/</span> <span class='nx-keyword'>class</span> <span class='nx-keyword'>info</span> slots ?-type ...? <span class='nx-placeholder'>?pattern?</span>

5003

<span class='nx-placeholder'>/cls/</span> <span class='nx-keyword'>info</span> slots ?-type ...? ?-<span class='nx-keyword'>source</span> ...? <span class='nx-placeholder'>?-closure?</span> <span class='nx-placeholder'>?pattern?</span></pre></div></div></div></td>

5001

<span class='nx-placeholder'>/obj/</span> <span class='nx-keyword'>info</span> slot objects <span class='nx-placeholder'>?-type ...?</span> <span class='nx-placeholder'>?pattern?</span>

5002

<span class='nx-placeholder'>/cls/</span> <span class='nx-keyword'>class</span> <span class='nx-keyword'>info</span> slot objects <span class='nx-placeholder'>?-type ...?</span> <span class='nx-placeholder'>?pattern?</span>

5003

<span class='nx-placeholder'>/cls/</span> <span class='nx-keyword'>info</span> slot objects \

5004

<span class='nx-placeholder'>?-type value?</span> <span class='nx-placeholder'>?-closure?</span> ?-<span class='nx-keyword'>source</span> value? <span class='nx-placeholder'>?pattern?</span></pre></div></div></div></td>

5004

5005

</tr>

5006

<tr>

5007

5008

5009

.nx {color: #000000; font-weight: normal; font-style: normal; padding-left: 10px}

5010

table.nx {border-collapse: collapse; border-spacing: 3px;}

5011

.nx-linenr {border-right: 1px solid #DDDDDD;padding-right: 5px; color: #2B547D;font-style: italic;}

5012

.nx-string {color: #779977; font-weight: normal; font-style: italic;}

5013

.nx-comment {color: #717ab3; font-weight: normal; font-style: italic;}

5014

.nx-keyword {color: #7f0055; font-weight: normal; font-style: normal;}

5015

.nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}

5016

.nx-variable {color: #AF663F; font-weight: normal; font-style: normal;}

5017

</style>

5018

5019

5020

5021

.nx {color: #000000; font-weight: normal; font-style: normal; padding-left: 10px}

5022

table.nx {border-collapse: collapse; border-spacing: 3px;}

5023

.nx-linenr {border-right: 1px solid #DDDDDD;padding-right: 5px; color: #2B547D;font-style: italic;}

5024

.nx-string {color: #779977; font-weight: normal; font-style: italic;}

5025

.nx-comment {color: #717ab3; font-weight: normal; font-style: italic;}

5026

.nx-keyword {color: #7f0055; font-weight: normal; font-style: normal;}

5027

.nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}

5028

.nx-variable {color: #AF663F; font-weight: normal; font-style: normal;}

5029

</style>

5030

<pre class='nx'><span class='nx-comment'># List definition of slots

5031

</span>

5032

<span class='nx-placeholder'>/obj/</span> <span class='nx-keyword'>info</span> slot definition \

5033

<span class='nx-placeholder'>?-type value?</span> <span class='nx-placeholder'>?-closure?</span> ?-<span class='nx-keyword'>source</span> value? <span class='nx-placeholder'>?pattern?</span>

5034

<span class='nx-placeholder'>/cls/</span> <span class='nx-keyword'>class</span> <span class='nx-keyword'>info</span> slot definition \

5035

<span class='nx-placeholder'>?-type value?</span> <span class='nx-placeholder'>?-closure?</span> ?-<span class='nx-keyword'>source</span> value? <span class='nx-placeholder'>?pattern?</span>

5036

<span class='nx-placeholder'>/cls/</span> <span class='nx-keyword'>info</span> slot definition \

5037

<span class='nx-placeholder'>?-type value?</span> <span class='nx-placeholder'>?-closure?</span> ?-<span class='nx-keyword'>source</span> value? <span class='nx-placeholder'>?pattern?</span></pre></div></div></div></td>

5038

</tr>

5039

<tr>

5040

5041

5042

.nx {color: #000000; font-weight: normal; font-style: normal; padding-left: 10px}

5043

table.nx {border-collapse: collapse; border-spacing: 3px;}

5044

.nx-linenr {border-right: 1px solid #DDDDDD;padding-right: 5px; color: #2B547D;font-style: italic;}

5045

.nx-string {color: #779977; font-weight: normal; font-style: italic;}

5046

.nx-comment {color: #717ab3; font-weight: normal; font-style: italic;}

5047

.nx-keyword {color: #7f0055; font-weight: normal; font-style: normal;}

5048

.nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}

5049

.nx-variable {color: #AF663F; font-weight: normal; font-style: normal;}

5050

</style>

5051

5052

5053

5054

.nx {color: #000000; font-weight: normal; font-style: normal; padding-left: 10px}

5055

table.nx {border-collapse: collapse; border-spacing: 3px;}

5056

.nx-linenr {border-right: 1px solid #DDDDDD;padding-right: 5px; color: #2B547D;font-style: italic;}

5057

.nx-string {color: #779977; font-weight: normal; font-style: italic;}

5058

.nx-comment {color: #717ab3; font-weight: normal; font-style: italic;}

5059

.nx-keyword {color: #7f0055; font-weight: normal; font-style: normal;}

5060

.nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}

5061

.nx-variable {color: #AF663F; font-weight: normal; font-style: normal;}

5062

</style>

5063

<pre class='nx'><span class='nx-comment'># List names of slots

5064

</span>

5065

<span class='nx-placeholder'>/obj/</span> <span class='nx-keyword'>info</span> slot names \

5066

<span class='nx-placeholder'>?-type value?</span> <span class='nx-placeholder'>?-closure?</span> ?-<span class='nx-keyword'>source</span> value? <span class='nx-placeholder'>?pattern?</span>

5067

<span class='nx-placeholder'>/cls/</span> <span class='nx-keyword'>class</span> <span class='nx-keyword'>info</span> slot names \

5068

<span class='nx-placeholder'>?-type value?</span> <span class='nx-placeholder'>?-closure?</span> ?-<span class='nx-keyword'>source</span> value? <span class='nx-placeholder'>?pattern?</span>

5069

<span class='nx-placeholder'>/cls/</span> <span class='nx-keyword'>info</span> slot names \

5070

<span class='nx-placeholder'>?-type value?</span> <span class='nx-placeholder'>?-closure?</span> ?-<span class='nx-keyword'>source</span> value? <span class='nx-placeholder'>?pattern?</span></pre></div></div></div></td>

5071

</tr>

5072

<tr>

5073

5074

5075

.nx {color: #000000; font-weight: normal; font-style: normal; padding-left: 10px}

5076

table.nx {border-collapse: collapse; border-spacing: 3px;}

5077

.nx-linenr {border-right: 1px solid #DDDDDD;padding-right: 5px; color: #2B547D;font-style: italic;}

5078

.nx-string {color: #779977; font-weight: normal; font-style: italic;}

5079

.nx-comment {color: #717ab3; font-weight: normal; font-style: italic;}

5080

.nx-keyword {color: #7f0055; font-weight: normal; font-style: normal;}

5081

.nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}

5082

.nx-variable {color: #AF663F; font-weight: normal; font-style: normal;}

5083

</style>

5084

5085

5086

5087

.nx {color: #000000; font-weight: normal; font-style: normal; padding-left: 10px}

5088

table.nx {border-collapse: collapse; border-spacing: 3px;}

5089

.nx-linenr {border-right: 1px solid #DDDDDD;padding-right: 5px; color: #2B547D;font-style: italic;}

5090

.nx-string {color: #779977; font-weight: normal; font-style: italic;}

5091

.nx-comment {color: #717ab3; font-weight: normal; font-style: italic;}

5092

.nx-keyword {color: #7f0055; font-weight: normal; font-style: normal;}

5093

.nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}

5094

.nx-variable {color: #AF663F; font-weight: normal; font-style: normal;}

5095

</style>

5096

<pre class='nx'><span class='nx-comment'># List reachable slot objects defined for obj

5097

</span><span class='nx-comment'># -source might be all|application|baseclasses

5098

</span><span class='nx-comment'># -type is the class of the slot object

5099

</span>

5100

<span class='nx-placeholder'>/obj/</span> <span class='nx-keyword'>info</span> <span class='nx-keyword'>lookup</span> slots \

5101

<span class='nx-placeholder'>?-type ...?</span> ?-<span class='nx-keyword'>source</span> ... <span class='nx-placeholder'>?pattern?</span>

5102

5103

<span class='nx-comment'># Returns list of slot objects</span></pre></div></div></div></td>

5104

</tr>

5005

5105

</tbody>

5006

5106

</table>

5007

5107

</div>

5046

5146

.nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}

5047

5147

.nx-variable {color: #AF663F; font-weight: normal; font-style: normal;}

5048

5148

</style>

5049

<pre class='nx'><span class='nx-comment'># Return parameter(s) provided by class for

5149

<pre class='nx'><span class='nx-comment'># Return parameter(s) provided by class for

5050

5150

</span><span class='nx-comment'># its instances; defines, how objects of this

5051

5151

</span><span class='nx-comment'># class can be configured. If name is provided

5052

5152

</span><span class='nx-comment'># only the named object parameter is returned

5059

5159

</span><span class='nx-placeholder'>/cls/</span> <span class='nx-keyword'>info</span> parameter <span class='nx-keyword'>list</span> <span class='nx-placeholder'>?name?</span>

5060

5160

5061

5161

<span class='nx-comment'># Return just the names of the parameters

5062

</span><span class='nx-placeholder'>/cls/</span> <span class='nx-keyword'>info</span> parameter name <span class='nx-placeholder'>?name?</span>

5162

</span><span class='nx-placeholder'>/cls/</span> <span class='nx-keyword'>info</span> parameter names <span class='nx-placeholder'>?name?</span>

5063

5163

5064

5164

<span class='nx-comment'># Return the full parameter specs

5065

</span><span class='nx-placeholder'>/cls/</span> <span class='nx-keyword'>info</span> parameter spec <span class='nx-placeholder'>?name?</span>

5165

</span><span class='nx-placeholder'>/cls/</span> <span class='nx-keyword'>info</span> parameter definition <span class='nx-placeholder'>?name?</span>

5066

5166

5067

5167

<span class='nx-comment'># Return the slot object(s)

5068

5168

</span><span class='nx-placeholder'>/cls/</span> <span class='nx-keyword'>info</span> parameter slot <span class='nx-placeholder'>?name?</span>

5390

5490

.nx-variable {color: #AF663F; font-weight: normal; font-style: normal;}

5391

5491

</style>

5392

5492

<pre class='nx'><span class='nx-placeholder'>/cls/</span> <span class='nx-keyword'>info</span> <span class='nx-keyword'>mixin</span> classes \

5393

<span class='nx-placeholder'>?-closure?</span> <span class='nx-placeholder'>?-guards?</span> <span class='nx-placeholder'>?-heritage?</span> <span class='nx-placeholder'>?pattern?</span></pre></div></div></div></td>

5493

<span class='nx-placeholder'>?-closure?</span> <span class='nx-placeholder'>?-guards?</span> <span class='nx-placeholder'>?-heritage?</span> <span class='nx-placeholder'>?pattern?</span></pre></div></div></div></td>

5394

5494

</tr>

5395

5495

<tr>

5396

5496

5473

5573

</div>

5474

5574

5475

5575

<h4 id="_list_method_handles">2.6.13. List Method-Handles</h4>

5476

<div class="paragraph"><p>NX supports <em>method-handles</em> to provide means to obtain further

5576

<div class="paragraph"><p>NX supports <em>method-handles</em> to provide means to obtain further

5477

5577

information about a method or to change maybe some properties of a

5478

5578

method. When a method is created, the method creating method returns

5479

5579

the method handle to the created method.</p></div>

6756

6856

6757

6857

6758

6858

Version 2.1<br />

6759

Last updated 2011-09-05 10:10:31 CEST

6859

Last updated 2011-09-05 13:18:52 CEST

6760

6860

</div>

6761

6861

</div>

6762

6862

</body>