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Include Sphinx-built HTML.

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="X-UA-Compatible" content="IE=Edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Overview: module code &#8212; Thun 0.1.0 documentation</title>
<link rel="stylesheet" href="../_static/alabaster.css" type="text/css" />
<link rel="stylesheet" href="../_static/pygments.css" type="text/css" />
<script type="text/javascript" src="../_static/documentation_options.js"></script>
<script type="text/javascript" src="../_static/jquery.js"></script>
<script type="text/javascript" src="../_static/underscore.js"></script>
<script type="text/javascript" src="../_static/doctools.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<link rel="index" title="Index" href="../genindex.html" />
<link rel="search" title="Search" href="../search.html" />
<link rel="stylesheet" href="../_static/custom.css" type="text/css" />
<meta name="viewport" content="width=device-width, initial-scale=0.9, maximum-scale=0.9" />
</head><body>
<div class="document">
<div class="documentwrapper">
<div class="bodywrapper">
<div class="body" role="main">
<h1>All modules for which code is available</h1>
<ul><li><a href="joy/joy.html">joy.joy</a></li>
<li><a href="joy/library.html">joy.library</a></li>
<li><a href="joy/parser.html">joy.parser</a></li>
<li><a href="joy/pribrary.html">joy.pribrary</a></li>
<li><a href="joy/utils/pretty_print.html">joy.utils.pretty_print</a></li>
<li><a href="joy/utils/stack.html">joy.utils.stack</a></li>
</ul>
</div>
</div>
</div>
<div class="sphinxsidebar" role="navigation" aria-label="main navigation">
<div class="sphinxsidebarwrapper"><div class="relations">
<h3>Related Topics</h3>
<ul>
<li><a href="../index.html">Documentation overview</a><ul>
</ul></li>
</ul>
</div>
<div id="searchbox" style="display: none" role="search">
<h3>Quick search</h3>
<div class="searchformwrapper">
<form class="search" action="../search.html" method="get">
<input type="text" name="q" />
<input type="submit" value="Go" />
<input type="hidden" name="check_keywords" value="yes" />
<input type="hidden" name="area" value="default" />
</form>
</div>
</div>
<script type="text/javascript">$('#searchbox').show(0);</script>
</div>
</div>
<div class="clearer"></div>
</div>
<div class="footer">
&copy;2018, Simon Forman.
|
Powered by <a href="http://sphinx-doc.org/">Sphinx 1.7.3</a>
&amp; <a href="https://github.com/bitprophet/alabaster">Alabaster 0.7.10</a>
</div>
</body>
</html>

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.. Thun documentation master file, created by
sphinx-quickstart on Sun Apr 22 15:19:55 2018.
You can adapt this file completely to your liking, but it should at least
contain the root `toctree` directive.
Thun |release| Documentation
============================
Thun is dialect of Joy written in Python.
`Joy`_ is a programming language created by Manfred von Thun that is easy to
use and understand and has many other nice properties. This Python
package implements an interpreter for a dialect of Joy that attempts to
stay very close to the spirit of Joy but does not precisely match the
behaviour of the original version(s) written in C. The main difference
between Thun and the originals, other than being written in Python, is
that it works by the "Continuation-Passing Style".
I hope that this package is useful in the sense that it provides an
additional joy interpreter (the binary in the archive from La Trobe seems
to run just fine on my modern Linux machine!) But I also hope that you
can read and understand the Python code and play with the implementation
itself.
.. _Joy: https://en.wikipedia.org/wiki/Joy_(programming_language)
Quick Start
--------------------------------------------------
Install from `PyPI`_ in the usual way::
$ pip install Thun
To start the REPL::
$ python -m joy
.. _PyPI: https://pypi.org/project/Thun/
Project Hosted on `OSDN`_
-------------------------
* `Source Repository`_ (Mercurial)
* `Bug tracker`_
* `Forums`_
* `Mailing list`_
.. _Bug tracker: https://osdn.net/projects/joypy/ticket/
.. _Forums: https://osdn.net/projects/joypy/forums/
.. _Mailing list: https://osdn.net/projects/joypy/lists/
.. _OSDN: https://osdn.net/projects/joypy/
.. _Source Repository: https://osdn.net/projects/joypy/scm/hg/Joypy/tree/tip/
Information on the Joy language
-------------------------------
See `the Wikipedia article`_ and `Kevin Albrecht's mirror of Manfred von Thun's original website for the Joy Programming Language`_ for more information on the Joy language.
The best source (no pun intended) for learning about Joy is the
information made available at the website of La Trobe University (see the
mirror link above) which contains source code for the
original C interpreter, Joy language source code for various functions,
and a great deal of fascinating material mostly written by Von Thun on
Joy and its deeper facets as well as how to program in it and several
interesting aspects. It's quite a treasure trove.
.. _the Wikipedia article: https://en.wikipedia.org/wiki/Joy_(programming_language)
.. _Kevin Albrecht's mirror of Manfred von Thun's original website for the Joy Programming Language: http://www.kevinalbrecht.com/code/joy-mirror/index.html
Documentation on Thun Dialect
-----------------------------
Thun is implemented in Python. The following is specific information for this dialect of Joy.
There are also some Jupyter notebooks.
.. toctree::
:maxdepth: 2
joy
stack
parser
pretty
library
lib
Indices and tables
==================
* :ref:`genindex`
* :ref:`modindex`
* :ref:`search`

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Joy Interpreter
===============
``joy.joy``
---------------
.. automodule:: joy.joy
:members:

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Function Reference
======================================
``joy.library``
----------------------
.. automodule:: joy.library
:members:

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Parsing Text into Joy Expressions
=================================
TODO: example...
``joy.parser``
---------------
.. automodule:: joy.parser
:members:
Parser Internals
----------------
TODO: Document things like the regular expressions used for tokenizing, and the re.Scanner, etc...

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Tracing Joy Execution
=====================
``joy.utils.pretty_print``
--------------------------
.. automodule:: joy.utils.pretty_print
:members:

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Stack or Quote or Sequence or List...
=====================================
``joy.utils.stack``
----------------------
.. automodule:: joy.utils.stack
:members:

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padding: 2px;
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/* -- general body styles --------------------------------------------------- */
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font-weight: bold;
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margin-left: 1em;
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margin-right: auto;
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text-align: right;
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/* -- sidebars -------------------------------------------------------------- */
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width: 40%;
float: right;
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margin-top: 25px;
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margin-right: auto;
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/* -- math display ---------------------------------------------------------- */
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/*
* doctools.js
* ~~~~~~~~~~~
*
* Sphinx JavaScript utilities for all documentation.
*
* :copyright: Copyright 2007-2018 by the Sphinx team, see AUTHORS.
* :license: BSD, see LICENSE for details.
*
*/
/**
* select a different prefix for underscore
*/
$u = _.noConflict();
/**
* make the code below compatible with browsers without
* an installed firebug like debugger
if (!window.console || !console.firebug) {
var names = ["log", "debug", "info", "warn", "error", "assert", "dir",
"dirxml", "group", "groupEnd", "time", "timeEnd", "count", "trace",
"profile", "profileEnd"];
window.console = {};
for (var i = 0; i < names.length; ++i)
window.console[names[i]] = function() {};
}
*/
/**
* small helper function to urldecode strings
*/
jQuery.urldecode = function(x) {
return decodeURIComponent(x).replace(/\+/g, ' ');
};
/**
* small helper function to urlencode strings
*/
jQuery.urlencode = encodeURIComponent;
/**
* This function returns the parsed url parameters of the
* current request. Multiple values per key are supported,
* it will always return arrays of strings for the value parts.
*/
jQuery.getQueryParameters = function(s) {
if (typeof s === 'undefined')
s = document.location.search;
var parts = s.substr(s.indexOf('?') + 1).split('&');
var result = {};
for (var i = 0; i < parts.length; i++) {
var tmp = parts[i].split('=', 2);
var key = jQuery.urldecode(tmp[0]);
var value = jQuery.urldecode(tmp[1]);
if (key in result)
result[key].push(value);
else
result[key] = [value];
}
return result;
};
/**
* highlight a given string on a jquery object by wrapping it in
* span elements with the given class name.
*/
jQuery.fn.highlightText = function(text, className) {
function highlight(node, addItems) {
if (node.nodeType === 3) {
var val = node.nodeValue;
var pos = val.toLowerCase().indexOf(text);
if (pos >= 0 &&
!jQuery(node.parentNode).hasClass(className) &&
!jQuery(node.parentNode).hasClass("nohighlight")) {
var span;
var isInSVG = jQuery(node).closest("body, svg, foreignObject").is("svg");
if (isInSVG) {
span = document.createElementNS("http://www.w3.org/2000/svg", "tspan");
} else {
span = document.createElement("span");
span.className = className;
}
span.appendChild(document.createTextNode(val.substr(pos, text.length)));
node.parentNode.insertBefore(span, node.parentNode.insertBefore(
document.createTextNode(val.substr(pos + text.length)),
node.nextSibling));
node.nodeValue = val.substr(0, pos);
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var bbox = span.getBBox();
var rect = document.createElementNS("http://www.w3.org/2000/svg", "rect");
rect.x.baseVal.value = bbox.x;
rect.y.baseVal.value = bbox.y;
rect.width.baseVal.value = bbox.width;
rect.height.baseVal.value = bbox.height;
rect.setAttribute('class', className);
var parentOfText = node.parentNode.parentNode;
addItems.push({
"parent": node.parentNode,
"target": rect});
}
}
}
else if (!jQuery(node).is("button, select, textarea")) {
jQuery.each(node.childNodes, function() {
highlight(this, addItems);
});
}
}
var addItems = [];
var result = this.each(function() {
highlight(this, addItems);
});
for (var i = 0; i < addItems.length; ++i) {
jQuery(addItems[i].parent).before(addItems[i].target);
}
return result;
};
/*
* backward compatibility for jQuery.browser
* This will be supported until firefox bug is fixed.
*/
if (!jQuery.browser) {
jQuery.uaMatch = function(ua) {
ua = ua.toLowerCase();
var match = /(chrome)[ \/]([\w.]+)/.exec(ua) ||
/(webkit)[ \/]([\w.]+)/.exec(ua) ||
/(opera)(?:.*version|)[ \/]([\w.]+)/.exec(ua) ||
/(msie) ([\w.]+)/.exec(ua) ||
ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec(ua) ||
[];
return {
browser: match[ 1 ] || "",
version: match[ 2 ] || "0"
};
};
jQuery.browser = {};
jQuery.browser[jQuery.uaMatch(navigator.userAgent).browser] = true;
}
/**
* Small JavaScript module for the documentation.
*/
var Documentation = {
init : function() {
this.fixFirefoxAnchorBug();
this.highlightSearchWords();
this.initIndexTable();
},
/**
* i18n support
*/
TRANSLATIONS : {},
PLURAL_EXPR : function(n) { return n === 1 ? 0 : 1; },
LOCALE : 'unknown',
// gettext and ngettext don't access this so that the functions
// can safely bound to a different name (_ = Documentation.gettext)
gettext : function(string) {
var translated = Documentation.TRANSLATIONS[string];
if (typeof translated === 'undefined')
return string;
return (typeof translated === 'string') ? translated : translated[0];
},
ngettext : function(singular, plural, n) {
var translated = Documentation.TRANSLATIONS[singular];
if (typeof translated === 'undefined')
return (n == 1) ? singular : plural;
return translated[Documentation.PLURALEXPR(n)];
},
addTranslations : function(catalog) {
for (var key in catalog.messages)
this.TRANSLATIONS[key] = catalog.messages[key];
this.PLURAL_EXPR = new Function('n', 'return +(' + catalog.plural_expr + ')');
this.LOCALE = catalog.locale;
},
/**
* add context elements like header anchor links
*/
addContextElements : function() {
$('div[id] > :header:first').each(function() {
$('<a class="headerlink">\u00B6</a>').
attr('href', '#' + this.id).
attr('title', _('Permalink to this headline')).
appendTo(this);
});
$('dt[id]').each(function() {
$('<a class="headerlink">\u00B6</a>').
attr('href', '#' + this.id).
attr('title', _('Permalink to this definition')).
appendTo(this);
});
},
/**
* workaround a firefox stupidity
* see: https://bugzilla.mozilla.org/show_bug.cgi?id=645075
*/
fixFirefoxAnchorBug : function() {
if (document.location.hash && $.browser.mozilla)
window.setTimeout(function() {
document.location.href += '';
}, 10);
},
/**
* highlight the search words provided in the url in the text
*/
highlightSearchWords : function() {
var params = $.getQueryParameters();
var terms = (params.highlight) ? params.highlight[0].split(/\s+/) : [];
if (terms.length) {
var body = $('div.body');
if (!body.length) {
body = $('body');
}
window.setTimeout(function() {
$.each(terms, function() {
body.highlightText(this.toLowerCase(), 'highlighted');
});
}, 10);
$('<p class="highlight-link"><a href="javascript:Documentation.' +
'hideSearchWords()">' + _('Hide Search Matches') + '</a></p>')
.appendTo($('#searchbox'));
}
},
/**
* init the domain index toggle buttons
*/
initIndexTable : function() {
var togglers = $('img.toggler').click(function() {
var src = $(this).attr('src');
var idnum = $(this).attr('id').substr(7);
$('tr.cg-' + idnum).toggle();
if (src.substr(-9) === 'minus.png')
$(this).attr('src', src.substr(0, src.length-9) + 'plus.png');
else
$(this).attr('src', src.substr(0, src.length-8) + 'minus.png');
}).css('display', '');
if (DOCUMENTATION_OPTIONS.COLLAPSE_INDEX) {
togglers.click();
}
},
/**
* helper function to hide the search marks again
*/
hideSearchWords : function() {
$('#searchbox .highlight-link').fadeOut(300);
$('span.highlighted').removeClass('highlighted');
},
/**
* make the url absolute
*/
makeURL : function(relativeURL) {
return DOCUMENTATION_OPTIONS.URL_ROOT + '/' + relativeURL;
},
/**
* get the current relative url
*/
getCurrentURL : function() {
var path = document.location.pathname;
var parts = path.split(/\//);
$.each(DOCUMENTATION_OPTIONS.URL_ROOT.split(/\//), function() {
if (this === '..')
parts.pop();
});
var url = parts.join('/');
return path.substring(url.lastIndexOf('/') + 1, path.length - 1);
},
initOnKeyListeners: function() {
$(document).keyup(function(event) {
var activeElementType = document.activeElement.tagName;
// don't navigate when in search box or textarea
if (activeElementType !== 'TEXTAREA' && activeElementType !== 'INPUT' && activeElementType !== 'SELECT') {
switch (event.keyCode) {
case 37: // left
var prevHref = $('link[rel="prev"]').prop('href');
if (prevHref) {
window.location.href = prevHref;
return false;
}
case 39: // right
var nextHref = $('link[rel="next"]').prop('href');
if (nextHref) {
window.location.href = nextHref;
return false;
}
}
}
});
}
};
// quick alias for translations
_ = Documentation.gettext;
$(document).ready(function() {
Documentation.init();
});

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URL_ROOT: '',
VERSION: '0.1.0',
LANGUAGE: 'None',
COLLAPSE_INDEX: false,
FILE_SUFFIX: '.html',
HAS_SOURCE: true,
SOURCELINK_SUFFIX: '.txt'
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/*
* searchtools.js_t
* ~~~~~~~~~~~~~~~~
*
* Sphinx JavaScript utilities for the full-text search.
*
* :copyright: Copyright 2007-2018 by the Sphinx team, see AUTHORS.
* :license: BSD, see LICENSE for details.
*
*/
/* Non-minified version JS is _stemmer.js if file is provided */
/**
* Porter Stemmer
*/
var Stemmer = function() {
var step2list = {
ational: 'ate',
tional: 'tion',
enci: 'ence',
anci: 'ance',
izer: 'ize',
bli: 'ble',
alli: 'al',
entli: 'ent',
eli: 'e',
ousli: 'ous',
ization: 'ize',
ation: 'ate',
ator: 'ate',
alism: 'al',
iveness: 'ive',
fulness: 'ful',
ousness: 'ous',
aliti: 'al',
iviti: 'ive',
biliti: 'ble',
logi: 'log'
};
var step3list = {
icate: 'ic',
ative: '',
alize: 'al',
iciti: 'ic',
ical: 'ic',
ful: '',
ness: ''
};
var c = "[^aeiou]"; // consonant
var v = "[aeiouy]"; // vowel
var C = c + "[^aeiouy]*"; // consonant sequence
var V = v + "[aeiou]*"; // vowel sequence
var mgr0 = "^(" + C + ")?" + V + C; // [C]VC... is m>0
var meq1 = "^(" + C + ")?" + V + C + "(" + V + ")?$"; // [C]VC[V] is m=1
var mgr1 = "^(" + C + ")?" + V + C + V + C; // [C]VCVC... is m>1
var s_v = "^(" + C + ")?" + v; // vowel in stem
this.stemWord = function (w) {
var stem;
var suffix;
var firstch;
var origword = w;
if (w.length < 3)
return w;
var re;
var re2;
var re3;
var re4;
firstch = w.substr(0,1);
if (firstch == "y")
w = firstch.toUpperCase() + w.substr(1);
// Step 1a
re = /^(.+?)(ss|i)es$/;
re2 = /^(.+?)([^s])s$/;
if (re.test(w))
w = w.replace(re,"$1$2");
else if (re2.test(w))
w = w.replace(re2,"$1$2");
// Step 1b
re = /^(.+?)eed$/;
re2 = /^(.+?)(ed|ing)$/;
if (re.test(w)) {
var fp = re.exec(w);
re = new RegExp(mgr0);
if (re.test(fp[1])) {
re = /.$/;
w = w.replace(re,"");
}
}
else if (re2.test(w)) {
var fp = re2.exec(w);
stem = fp[1];
re2 = new RegExp(s_v);
if (re2.test(stem)) {
w = stem;
re2 = /(at|bl|iz)$/;
re3 = new RegExp("([^aeiouylsz])\\1$");
re4 = new RegExp("^" + C + v + "[^aeiouwxy]$");
if (re2.test(w))
w = w + "e";
else if (re3.test(w)) {
re = /.$/;
w = w.replace(re,"");
}
else if (re4.test(w))
w = w + "e";
}
}
// Step 1c
re = /^(.+?)y$/;
if (re.test(w)) {
var fp = re.exec(w);
stem = fp[1];
re = new RegExp(s_v);
if (re.test(stem))
w = stem + "i";
}
// Step 2
re = /^(.+?)(ational|tional|enci|anci|izer|bli|alli|entli|eli|ousli|ization|ation|ator|alism|iveness|fulness|ousness|aliti|iviti|biliti|logi)$/;
if (re.test(w)) {
var fp = re.exec(w);
stem = fp[1];
suffix = fp[2];
re = new RegExp(mgr0);
if (re.test(stem))
w = stem + step2list[suffix];
}
// Step 3
re = /^(.+?)(icate|ative|alize|iciti|ical|ful|ness)$/;
if (re.test(w)) {
var fp = re.exec(w);
stem = fp[1];
suffix = fp[2];
re = new RegExp(mgr0);
if (re.test(stem))
w = stem + step3list[suffix];
}
// Step 4
re = /^(.+?)(al|ance|ence|er|ic|able|ible|ant|ement|ment|ent|ou|ism|ate|iti|ous|ive|ize)$/;
re2 = /^(.+?)(s|t)(ion)$/;
if (re.test(w)) {
var fp = re.exec(w);
stem = fp[1];
re = new RegExp(mgr1);
if (re.test(stem))
w = stem;
}
else if (re2.test(w)) {
var fp = re2.exec(w);
stem = fp[1] + fp[2];
re2 = new RegExp(mgr1);
if (re2.test(stem))
w = stem;
}
// Step 5
re = /^(.+?)e$/;
if (re.test(w)) {
var fp = re.exec(w);
stem = fp[1];
re = new RegExp(mgr1);
re2 = new RegExp(meq1);
re3 = new RegExp("^" + C + v + "[^aeiouwxy]$");
if (re.test(stem) || (re2.test(stem) && !(re3.test(stem))))
w = stem;
}
re = /ll$/;
re2 = new RegExp(mgr1);
if (re.test(w) && re2.test(w)) {
re = /.$/;
w = w.replace(re,"");
}
// and turn initial Y back to y
if (firstch == "y")
w = firstch.toLowerCase() + w.substr(1);
return w;
}
}
/**
* Simple result scoring code.
*/
var Scorer = {
// Implement the following function to further tweak the score for each result
// The function takes a result array [filename, title, anchor, descr, score]
// and returns the new score.
/*
score: function(result) {
return result[4];
},
*/
// query matches the full name of an object
objNameMatch: 11,
// or matches in the last dotted part of the object name
objPartialMatch: 6,
// Additive scores depending on the priority of the object
objPrio: {0: 15, // used to be importantResults
1: 5, // used to be objectResults
2: -5}, // used to be unimportantResults
// Used when the priority is not in the mapping.
objPrioDefault: 0,
// query found in title
title: 15,
// query found in terms
term: 5
};
var splitChars = (function() {
var result = {};
var singles = [96, 180, 187, 191, 215, 247, 749, 885, 903, 907, 909, 930, 1014, 1648,
1748, 1809, 2416, 2473, 2481, 2526, 2601, 2609, 2612, 2615, 2653, 2702,
2706, 2729, 2737, 2740, 2857, 2865, 2868, 2910, 2928, 2948, 2961, 2971,
2973, 3085, 3089, 3113, 3124, 3213, 3217, 3241, 3252, 3295, 3341, 3345,
3369, 3506, 3516, 3633, 3715, 3721, 3736, 3744, 3748, 3750, 3756, 3761,
3781, 3912, 4239, 4347, 4681, 4695, 4697, 4745, 4785, 4799, 4801, 4823,
4881, 5760, 5901, 5997, 6313, 7405, 8024, 8026, 8028, 8030, 8117, 8125,
8133, 8181, 8468, 8485, 8487, 8489, 8494, 8527, 11311, 11359, 11687, 11695,
11703, 11711, 11719, 11727, 11735, 12448, 12539, 43010, 43014, 43019, 43587,
43696, 43713, 64286, 64297, 64311, 64317, 64319, 64322, 64325, 65141];
var i, j, start, end;
for (i = 0; i < singles.length; i++) {
result[singles[i]] = true;
}
var ranges = [[0, 47], [58, 64], [91, 94], [123, 169], [171, 177], [182, 184], [706, 709],
[722, 735], [741, 747], [751, 879], [888, 889], [894, 901], [1154, 1161],
[1318, 1328], [1367, 1368], [1370, 1376], [1416, 1487], [1515, 1519], [1523, 1568],
[1611, 1631], [1642, 1645], [1750, 1764], [1767, 1773], [1789, 1790], [1792, 1807],
[1840, 1868], [1958, 1968], [1970, 1983], [2027, 2035], [2038, 2041], [2043, 2047],
[2070, 2073], [2075, 2083], [2085, 2087], [2089, 2307], [2362, 2364], [2366, 2383],
[2385, 2391], [2402, 2405], [2419, 2424], [2432, 2436], [2445, 2446], [2449, 2450],
[2483, 2485], [2490, 2492], [2494, 2509], [2511, 2523], [2530, 2533], [2546, 2547],
[2554, 2564], [2571, 2574], [2577, 2578], [2618, 2648], [2655, 2661], [2672, 2673],
[2677, 2692], [2746, 2748], [2750, 2767], [2769, 2783], [2786, 2789], [2800, 2820],
[2829, 2830], [2833, 2834], [2874, 2876], [2878, 2907], [2914, 2917], [2930, 2946],
[2955, 2957], [2966, 2968], [2976, 2978], [2981, 2983], [2987, 2989], [3002, 3023],
[3025, 3045], [3059, 3076], [3130, 3132], [3134, 3159], [3162, 3167], [3170, 3173],
[3184, 3191], [3199, 3204], [3258, 3260], [3262, 3293], [3298, 3301], [3312, 3332],
[3386, 3388], [3390, 3423], [3426, 3429], [3446, 3449], [3456, 3460], [3479, 3481],
[3518, 3519], [3527, 3584], [3636, 3647], [3655, 3663], [3674, 3712], [3717, 3718],
[3723, 3724], [3726, 3731], [3752, 3753], [3764, 3772], [3774, 3775], [3783, 3791],
[3802, 3803], [3806, 3839], [3841, 3871], [3892, 3903], [3949, 3975], [3980, 4095],
[4139, 4158], [4170, 4175], [4182, 4185], [4190, 4192], [4194, 4196], [4199, 4205],
[4209, 4212], [4226, 4237], [4250, 4255], [4294, 4303], [4349, 4351], [4686, 4687],
[4702, 4703], [4750, 4751], [4790, 4791], [4806, 4807], [4886, 4887], [4955, 4968],
[4989, 4991], [5008, 5023], [5109, 5120], [5741, 5742], [5787, 5791], [5867, 5869],
[5873, 5887], [5906, 5919], [5938, 5951], [5970, 5983], [6001, 6015], [6068, 6102],
[6104, 6107], [6109, 6111], [6122, 6127], [6138, 6159], [6170, 6175], [6264, 6271],
[6315, 6319], [6390, 6399], [6429, 6469], [6510, 6511], [6517, 6527], [6572, 6592],
[6600, 6607], [6619, 6655], [6679, 6687], [6741, 6783], [6794, 6799], [6810, 6822],
[6824, 6916], [6964, 6980], [6988, 6991], [7002, 7042], [7073, 7085], [7098, 7167],
[7204, 7231], [7242, 7244], [7294, 7400], [7410, 7423], [7616, 7679], [7958, 7959],
[7966, 7967], [8006, 8007], [8014, 8015], [8062, 8063], [8127, 8129], [8141, 8143],
[8148, 8149], [8156, 8159], [8173, 8177], [8189, 8303], [8306, 8307], [8314, 8318],
[8330, 8335], [8341, 8449], [8451, 8454], [8456, 8457], [8470, 8472], [8478, 8483],
[8506, 8507], [8512, 8516], [8522, 8525], [8586, 9311], [9372, 9449], [9472, 10101],
[10132, 11263], [11493, 11498], [11503, 11516], [11518, 11519], [11558, 11567],
[11622, 11630], [11632, 11647], [11671, 11679], [11743, 11822], [11824, 12292],
[12296, 12320], [12330, 12336], [12342, 12343], [12349, 12352], [12439, 12444],
[12544, 12548], [12590, 12592], [12687, 12689], [12694, 12703], [12728, 12783],
[12800, 12831], [12842, 12880], [12896, 12927], [12938, 12976], [12992, 13311],
[19894, 19967], [40908, 40959], [42125, 42191], [42238, 42239], [42509, 42511],
[42540, 42559], [42592, 42593], [42607, 42622], [42648, 42655], [42736, 42774],
[42784, 42785], [42889, 42890], [42893, 43002], [43043, 43055], [43062, 43071],
[43124, 43137], [43188, 43215], [43226, 43249], [43256, 43258], [43260, 43263],
[43302, 43311], [43335, 43359], [43389, 43395], [43443, 43470], [43482, 43519],
[43561, 43583], [43596, 43599], [43610, 43615], [43639, 43641], [43643, 43647],
[43698, 43700], [43703, 43704], [43710, 43711], [43715, 43738], [43742, 43967],
[44003, 44015], [44026, 44031], [55204, 55215], [55239, 55242], [55292, 55295],
[57344, 63743], [64046, 64047], [64110, 64111], [64218, 64255], [64263, 64274],
[64280, 64284], [64434, 64466], [64830, 64847], [64912, 64913], [64968, 65007],
[65020, 65135], [65277, 65295], [65306, 65312], [65339, 65344], [65371, 65381],
[65471, 65473], [65480, 65481], [65488, 65489], [65496, 65497]];
for (i = 0; i < ranges.length; i++) {
start = ranges[i][0];
end = ranges[i][1];
for (j = start; j <= end; j++) {
result[j] = true;
}
}
return result;
})();
function splitQuery(query) {
var result = [];
var start = -1;
for (var i = 0; i < query.length; i++) {
if (splitChars[query.charCodeAt(i)]) {
if (start !== -1) {
result.push(query.slice(start, i));
start = -1;
}
} else if (start === -1) {
start = i;
}
}
if (start !== -1) {
result.push(query.slice(start));
}
return result;
}
/**
* Search Module
*/
var Search = {
_index : null,
_queued_query : null,
_pulse_status : -1,
init : function() {
var params = $.getQueryParameters();
if (params.q) {
var query = params.q[0];
$('input[name="q"]')[0].value = query;
this.performSearch(query);
}
},
loadIndex : function(url) {
$.ajax({type: "GET", url: url, data: null,
dataType: "script", cache: true,
complete: function(jqxhr, textstatus) {
if (textstatus != "success") {
document.getElementById("searchindexloader").src = url;
}
}});
},
setIndex : function(index) {
var q;
this._index = index;
if ((q = this._queued_query) !== null) {
this._queued_query = null;
Search.query(q);
}
},
hasIndex : function() {
return this._index !== null;
},
deferQuery : function(query) {
this._queued_query = query;
},
stopPulse : function() {
this._pulse_status = 0;
},
startPulse : function() {
if (this._pulse_status >= 0)
return;
function pulse() {
var i;
Search._pulse_status = (Search._pulse_status + 1) % 4;
var dotString = '';
for (i = 0; i < Search._pulse_status; i++)
dotString += '.';
Search.dots.text(dotString);
if (Search._pulse_status > -1)
window.setTimeout(pulse, 500);
}
pulse();
},
/**
* perform a search for something (or wait until index is loaded)
*/
performSearch : function(query) {
// create the required interface elements
this.out = $('#search-results');
this.title = $('<h2>' + _('Searching') + '</h2>').appendTo(this.out);
this.dots = $('<span></span>').appendTo(this.title);
this.status = $('<p style="display: none"></p>').appendTo(this.out);
this.output = $('<ul class="search"/>').appendTo(this.out);
$('#search-progress').text(_('Preparing search...'));
this.startPulse();
// index already loaded, the browser was quick!
if (this.hasIndex())
this.query(query);
else
this.deferQuery(query);
},
/**
* execute search (requires search index to be loaded)
*/
query : function(query) {
var i;
var stopwords = ["a","and","are","as","at","be","but","by","for","if","in","into","is","it","near","no","not","of","on","or","such","that","the","their","then","there","these","they","this","to","was","will","with"];
// stem the searchterms and add them to the correct list
var stemmer = new Stemmer();
var searchterms = [];
var excluded = [];
var hlterms = [];
var tmp = splitQuery(query);
var objectterms = [];
for (i = 0; i < tmp.length; i++) {
if (tmp[i] !== "") {
objectterms.push(tmp[i].toLowerCase());
}
if ($u.indexOf(stopwords, tmp[i].toLowerCase()) != -1 || tmp[i].match(/^\d+$/) ||
tmp[i] === "") {
// skip this "word"
continue;
}
// stem the word
var word = stemmer.stemWord(tmp[i].toLowerCase());
// prevent stemmer from cutting word smaller than two chars
if(word.length < 3 && tmp[i].length >= 3) {
word = tmp[i];
}
var toAppend;
// select the correct list
if (word[0] == '-') {
toAppend = excluded;
word = word.substr(1);
}
else {
toAppend = searchterms;
hlterms.push(tmp[i].toLowerCase());
}
// only add if not already in the list
if (!$u.contains(toAppend, word))
toAppend.push(word);
}
var highlightstring = '?highlight=' + $.urlencode(hlterms.join(" "));
// console.debug('SEARCH: searching for:');
// console.info('required: ', searchterms);
// console.info('excluded: ', excluded);
// prepare search
var terms = this._index.terms;
var titleterms = this._index.titleterms;
// array of [filename, title, anchor, descr, score]
var results = [];
$('#search-progress').empty();
// lookup as object
for (i = 0; i < objectterms.length; i++) {
var others = [].concat(objectterms.slice(0, i),
objectterms.slice(i+1, objectterms.length));
results = results.concat(this.performObjectSearch(objectterms[i], others));
}
// lookup as search terms in fulltext
results = results.concat(this.performTermsSearch(searchterms, excluded, terms, titleterms));
// let the scorer override scores with a custom scoring function
if (Scorer.score) {
for (i = 0; i < results.length; i++)
results[i][4] = Scorer.score(results[i]);
}
// now sort the results by score (in opposite order of appearance, since the
// display function below uses pop() to retrieve items) and then
// alphabetically
results.sort(function(a, b) {
var left = a[4];
var right = b[4];
if (left > right) {
return 1;
} else if (left < right) {
return -1;
} else {
// same score: sort alphabetically
left = a[1].toLowerCase();
right = b[1].toLowerCase();
return (left > right) ? -1 : ((left < right) ? 1 : 0);
}
});
// for debugging
//Search.lastresults = results.slice(); // a copy
//console.info('search results:', Search.lastresults);
// print the results
var resultCount = results.length;
function displayNextItem() {
// results left, load the summary and display it
if (results.length) {
var item = results.pop();
var listItem = $('<li style="display:none"></li>');
if (DOCUMENTATION_OPTIONS.FILE_SUFFIX === '') {
// dirhtml builder
var dirname = item[0] + '/';
if (dirname.match(/\/index\/$/)) {
dirname = dirname.substring(0, dirname.length-6);
} else if (dirname == 'index/') {
dirname = '';
}
listItem.append($('<a/>').attr('href',
DOCUMENTATION_OPTIONS.URL_ROOT + dirname +
highlightstring + item[2]).html(item[1]));
} else {
// normal html builders
listItem.append($('<a/>').attr('href',
item[0] + DOCUMENTATION_OPTIONS.FILE_SUFFIX +
highlightstring + item[2]).html(item[1]));
}
if (item[3]) {
listItem.append($('<span> (' + item[3] + ')</span>'));
Search.output.append(listItem);
listItem.slideDown(5, function() {
displayNextItem();
});
} else if (DOCUMENTATION_OPTIONS.HAS_SOURCE) {
var suffix = DOCUMENTATION_OPTIONS.SOURCELINK_SUFFIX;
if (suffix === undefined) {
suffix = '.txt';
}
$.ajax({url: DOCUMENTATION_OPTIONS.URL_ROOT + '_sources/' + item[5] + (item[5].slice(-suffix.length) === suffix ? '' : suffix),
dataType: "text",
complete: function(jqxhr, textstatus) {
var data = jqxhr.responseText;
if (data !== '' && data !== undefined) {
listItem.append(Search.makeSearchSummary(data, searchterms, hlterms));
}
Search.output.append(listItem);
listItem.slideDown(5, function() {
displayNextItem();
});
}});
} else {
// no source available, just display title
Search.output.append(listItem);
listItem.slideDown(5, function() {
displayNextItem();
});
}
}
// search finished, update title and status message
else {
Search.stopPulse();
Search.title.text(_('Search Results'));
if (!resultCount)
Search.status.text(_('Your search did not match any documents. Please make sure that all words are spelled correctly and that you\'ve selected enough categories.'));
else
Search.status.text(_('Search finished, found %s page(s) matching the search query.').replace('%s', resultCount));
Search.status.fadeIn(500);
}
}
displayNextItem();
},
/**
* search for object names
*/
performObjectSearch : function(object, otherterms) {
var filenames = this._index.filenames;
var docnames = this._index.docnames;
var objects = this._index.objects;
var objnames = this._index.objnames;
var titles = this._index.titles;
var i;
var results = [];
for (var prefix in objects) {
for (var name in objects[prefix]) {
var fullname = (prefix ? prefix + '.' : '') + name;
if (fullname.toLowerCase().indexOf(object) > -1) {
var score = 0;
var parts = fullname.split('.');
// check for different match types: exact matches of full name or
// "last name" (i.e. last dotted part)
if (fullname == object || parts[parts.length - 1] == object) {
score += Scorer.objNameMatch;
// matches in last name
} else if (parts[parts.length - 1].indexOf(object) > -1) {
score += Scorer.objPartialMatch;
}
var match = objects[prefix][name];
var objname = objnames[match[1]][2];
var title = titles[match[0]];
// If more than one term searched for, we require other words to be
// found in the name/title/description
if (otherterms.length > 0) {
var haystack = (prefix + ' ' + name + ' ' +
objname + ' ' + title).toLowerCase();
var allfound = true;
for (i = 0; i < otherterms.length; i++) {
if (haystack.indexOf(otherterms[i]) == -1) {
allfound = false;
break;
}
}
if (!allfound) {
continue;
}
}
var descr = objname + _(', in ') + title;
var anchor = match[3];
if (anchor === '')
anchor = fullname;
else if (anchor == '-')
anchor = objnames[match[1]][1] + '-' + fullname;
// add custom score for some objects according to scorer
if (Scorer.objPrio.hasOwnProperty(match[2])) {
score += Scorer.objPrio[match[2]];
} else {
score += Scorer.objPrioDefault;
}
results.push([docnames[match[0]], fullname, '#'+anchor, descr, score, filenames[match[0]]]);
}
}
}
return results;
},
/**
* search for full-text terms in the index
*/
performTermsSearch : function(searchterms, excluded, terms, titleterms) {
var docnames = this._index.docnames;
var filenames = this._index.filenames;
var titles = this._index.titles;
var i, j, file;
var fileMap = {};
var scoreMap = {};
var results = [];
// perform the search on the required terms
for (i = 0; i < searchterms.length; i++) {
var word = searchterms[i];
var files = [];
var _o = [
{files: terms[word], score: Scorer.term},
{files: titleterms[word], score: Scorer.title}
];
// no match but word was a required one
if ($u.every(_o, function(o){return o.files === undefined;})) {
break;
}
// found search word in contents
$u.each(_o, function(o) {
var _files = o.files;
if (_files === undefined)
return
if (_files.length === undefined)
_files = [_files];
files = files.concat(_files);
// set score for the word in each file to Scorer.term
for (j = 0; j < _files.length; j++) {
file = _files[j];
if (!(file in scoreMap))
scoreMap[file] = {}
scoreMap[file][word] = o.score;
}
});
// create the mapping
for (j = 0; j < files.length; j++) {
file = files[j];
if (file in fileMap)
fileMap[file].push(word);
else
fileMap[file] = [word];
}
}
// now check if the files don't contain excluded terms
for (file in fileMap) {
var valid = true;
// check if all requirements are matched
if (fileMap[file].length != searchterms.length)
continue;
// ensure that none of the excluded terms is in the search result
for (i = 0; i < excluded.length; i++) {
if (terms[excluded[i]] == file ||
titleterms[excluded[i]] == file ||
$u.contains(terms[excluded[i]] || [], file) ||
$u.contains(titleterms[excluded[i]] || [], file)) {
valid = false;
break;
}
}
// if we have still a valid result we can add it to the result list
if (valid) {
// select one (max) score for the file.
// for better ranking, we should calculate ranking by using words statistics like basic tf-idf...
var score = $u.max($u.map(fileMap[file], function(w){return scoreMap[file][w]}));
results.push([docnames[file], titles[file], '', null, score, filenames[file]]);
}
}
return results;
},
/**
* helper function to return a node containing the
* search summary for a given text. keywords is a list
* of stemmed words, hlwords is the list of normal, unstemmed
* words. the first one is used to find the occurrence, the
* latter for highlighting it.
*/
makeSearchSummary : function(text, keywords, hlwords) {
var textLower = text.toLowerCase();
var start = 0;
$.each(keywords, function() {
var i = textLower.indexOf(this.toLowerCase());
if (i > -1)
start = i;
});
start = Math.max(start - 120, 0);
var excerpt = ((start > 0) ? '...' : '') +
$.trim(text.substr(start, 240)) +
((start + 240 - text.length) ? '...' : '');
var rv = $('<div class="context"></div>').text(excerpt);
$.each(hlwords, function() {
rv = rv.highlightText(this, 'highlighted');
});
return rv;
}
};
$(document).ready(function() {
Search.init();
});

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// Underscore.js 1.3.1
// (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
// Underscore is freely distributable under the MIT license.
// Portions of Underscore are inspired or borrowed from Prototype,
// Oliver Steele's Functional, and John Resig's Micro-Templating.
// For all details and documentation:
// http://documentcloud.github.com/underscore
(function() {
// Baseline setup
// --------------
// Establish the root object, `window` in the browser, or `global` on the server.
var root = this;
// Save the previous value of the `_` variable.
var previousUnderscore = root._;
// Establish the object that gets returned to break out of a loop iteration.
var breaker = {};
// Save bytes in the minified (but not gzipped) version:
var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
// Create quick reference variables for speed access to core prototypes.
var slice = ArrayProto.slice,
unshift = ArrayProto.unshift,
toString = ObjProto.toString,
hasOwnProperty = ObjProto.hasOwnProperty;
// All **ECMAScript 5** native function implementations that we hope to use
// are declared here.
var
nativeForEach = ArrayProto.forEach,
nativeMap = ArrayProto.map,
nativeReduce = ArrayProto.reduce,
nativeReduceRight = ArrayProto.reduceRight,
nativeFilter = ArrayProto.filter,
nativeEvery = ArrayProto.every,
nativeSome = ArrayProto.some,
nativeIndexOf = ArrayProto.indexOf,
nativeLastIndexOf = ArrayProto.lastIndexOf,
nativeIsArray = Array.isArray,
nativeKeys = Object.keys,
nativeBind = FuncProto.bind;
// Create a safe reference to the Underscore object for use below.
var _ = function(obj) { return new wrapper(obj); };
// Export the Underscore object for **Node.js**, with
// backwards-compatibility for the old `require()` API. If we're in
// the browser, add `_` as a global object via a string identifier,
// for Closure Compiler "advanced" mode.
if (typeof exports !== 'undefined') {
if (typeof module !== 'undefined' && module.exports) {
exports = module.exports = _;
}
exports._ = _;
} else {
root['_'] = _;
}
// Current version.
_.VERSION = '1.3.1';
// Collection Functions
// --------------------
// The cornerstone, an `each` implementation, aka `forEach`.
// Handles objects with the built-in `forEach`, arrays, and raw objects.
// Delegates to **ECMAScript 5**'s native `forEach` if available.
var each = _.each = _.forEach = function(obj, iterator, context) {
if (obj == null) return;
if (nativeForEach && obj.forEach === nativeForEach) {
obj.forEach(iterator, context);
} else if (obj.length === +obj.length) {
for (var i = 0, l = obj.length; i < l; i++) {
if (i in obj && iterator.call(context, obj[i], i, obj) === breaker) return;
}
} else {
for (var key in obj) {
if (_.has(obj, key)) {
if (iterator.call(context, obj[key], key, obj) === breaker) return;
}
}
}
};
// Return the results of applying the iterator to each element.
// Delegates to **ECMAScript 5**'s native `map` if available.
_.map = _.collect = function(obj, iterator, context) {
var results = [];
if (obj == null) return results;
if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
each(obj, function(value, index, list) {
results[results.length] = iterator.call(context, value, index, list);
});
if (obj.length === +obj.length) results.length = obj.length;
return results;
};
// **Reduce** builds up a single result from a list of values, aka `inject`,
// or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
_.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
var initial = arguments.length > 2;
if (obj == null) obj = [];
if (nativeReduce && obj.reduce === nativeReduce) {
if (context) iterator = _.bind(iterator, context);
return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
}
each(obj, function(value, index, list) {
if (!initial) {
memo = value;
initial = true;
} else {
memo = iterator.call(context, memo, value, index, list);
}
});
if (!initial) throw new TypeError('Reduce of empty array with no initial value');
return memo;
};
// The right-associative version of reduce, also known as `foldr`.
// Delegates to **ECMAScript 5**'s native `reduceRight` if available.
_.reduceRight = _.foldr = function(obj, iterator, memo, context) {
var initial = arguments.length > 2;
if (obj == null) obj = [];
if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
if (context) iterator = _.bind(iterator, context);
return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
}
var reversed = _.toArray(obj).reverse();
if (context && !initial) iterator = _.bind(iterator, context);
return initial ? _.reduce(reversed, iterator, memo, context) : _.reduce(reversed, iterator);
};
// Return the first value which passes a truth test. Aliased as `detect`.
_.find = _.detect = function(obj, iterator, context) {
var result;
any(obj, function(value, index, list) {
if (iterator.call(context, value, index, list)) {
result = value;
return true;
}
});
return result;
};
// Return all the elements that pass a truth test.
// Delegates to **ECMAScript 5**'s native `filter` if available.
// Aliased as `select`.
_.filter = _.select = function(obj, iterator, context) {
var results = [];
if (obj == null) return results;
if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
each(obj, function(value, index, list) {
if (iterator.call(context, value, index, list)) results[results.length] = value;
});
return results;
};
// Return all the elements for which a truth test fails.
_.reject = function(obj, iterator, context) {
var results = [];
if (obj == null) return results;
each(obj, function(value, index, list) {
if (!iterator.call(context, value, index, list)) results[results.length] = value;
});
return results;
};
// Determine whether all of the elements match a truth test.
// Delegates to **ECMAScript 5**'s native `every` if available.
// Aliased as `all`.
_.every = _.all = function(obj, iterator, context) {
var result = true;
if (obj == null) return result;
if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
each(obj, function(value, index, list) {
if (!(result = result && iterator.call(context, value, index, list))) return breaker;
});
return result;
};
// Determine if at least one element in the object matches a truth test.
// Delegates to **ECMAScript 5**'s native `some` if available.
// Aliased as `any`.
var any = _.some = _.any = function(obj, iterator, context) {
iterator || (iterator = _.identity);
var result = false;
if (obj == null) return result;
if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
each(obj, function(value, index, list) {
if (result || (result = iterator.call(context, value, index, list))) return breaker;
});
return !!result;
};
// Determine if a given value is included in the array or object using `===`.
// Aliased as `contains`.
_.include = _.contains = function(obj, target) {
var found = false;
if (obj == null) return found;
if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
found = any(obj, function(value) {
return value === target;
});
return found;
};
// Invoke a method (with arguments) on every item in a collection.
_.invoke = function(obj, method) {
var args = slice.call(arguments, 2);
return _.map(obj, function(value) {
return (_.isFunction(method) ? method || value : value[method]).apply(value, args);
});
};
// Convenience version of a common use case of `map`: fetching a property.
_.pluck = function(obj, key) {
return _.map(obj, function(value){ return value[key]; });
};
// Return the maximum element or (element-based computation).
_.max = function(obj, iterator, context) {
if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
if (!iterator && _.isEmpty(obj)) return -Infinity;
var result = {computed : -Infinity};
each(obj, function(value, index, list) {
var computed = iterator ? iterator.call(context, value, index, list) : value;
computed >= result.computed && (result = {value : value, computed : computed});
});
return result.value;
};
// Return the minimum element (or element-based computation).
_.min = function(obj, iterator, context) {
if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
if (!iterator && _.isEmpty(obj)) return Infinity;
var result = {computed : Infinity};
each(obj, function(value, index, list) {
var computed = iterator ? iterator.call(context, value, index, list) : value;
computed < result.computed && (result = {value : value, computed : computed});
});
return result.value;
};
// Shuffle an array.
_.shuffle = function(obj) {
var shuffled = [], rand;
each(obj, function(value, index, list) {
if (index == 0) {
shuffled[0] = value;
} else {
rand = Math.floor(Math.random() * (index + 1));
shuffled[index] = shuffled[rand];
shuffled[rand] = value;
}
});
return shuffled;
};
// Sort the object's values by a criterion produced by an iterator.
_.sortBy = function(obj, iterator, context) {
return _.pluck(_.map(obj, function(value, index, list) {
return {
value : value,
criteria : iterator.call(context, value, index, list)
};
}).sort(function(left, right) {
var a = left.criteria, b = right.criteria;
return a < b ? -1 : a > b ? 1 : 0;
}), 'value');
};
// Groups the object's values by a criterion. Pass either a string attribute
// to group by, or a function that returns the criterion.
_.groupBy = function(obj, val) {
var result = {};
var iterator = _.isFunction(val) ? val : function(obj) { return obj[val]; };
each(obj, function(value, index) {
var key = iterator(value, index);
(result[key] || (result[key] = [])).push(value);
});
return result;
};
// Use a comparator function to figure out at what index an object should
// be inserted so as to maintain order. Uses binary search.
_.sortedIndex = function(array, obj, iterator) {
iterator || (iterator = _.identity);
var low = 0, high = array.length;
while (low < high) {
var mid = (low + high) >> 1;
iterator(array[mid]) < iterator(obj) ? low = mid + 1 : high = mid;
}
return low;
};
// Safely convert anything iterable into a real, live array.
_.toArray = function(iterable) {
if (!iterable) return [];
if (iterable.toArray) return iterable.toArray();
if (_.isArray(iterable)) return slice.call(iterable);
if (_.isArguments(iterable)) return slice.call(iterable);
return _.values(iterable);
};
// Return the number of elements in an object.
_.size = function(obj) {
return _.toArray(obj).length;
};
// Array Functions
// ---------------
// Get the first element of an array. Passing **n** will return the first N
// values in the array. Aliased as `head`. The **guard** check allows it to work
// with `_.map`.
_.first = _.head = function(array, n, guard) {
return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
};
// Returns everything but the last entry of the array. Especcialy useful on
// the arguments object. Passing **n** will return all the values in
// the array, excluding the last N. The **guard** check allows it to work with
// `_.map`.
_.initial = function(array, n, guard) {
return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n));
};
// Get the last element of an array. Passing **n** will return the last N
// values in the array. The **guard** check allows it to work with `_.map`.
_.last = function(array, n, guard) {
if ((n != null) && !guard) {
return slice.call(array, Math.max(array.length - n, 0));
} else {
return array[array.length - 1];
}
};
// Returns everything but the first entry of the array. Aliased as `tail`.
// Especially useful on the arguments object. Passing an **index** will return
// the rest of the values in the array from that index onward. The **guard**
// check allows it to work with `_.map`.
_.rest = _.tail = function(array, index, guard) {
return slice.call(array, (index == null) || guard ? 1 : index);
};
// Trim out all falsy values from an array.
_.compact = function(array) {
return _.filter(array, function(value){ return !!value; });
};
// Return a completely flattened version of an array.
_.flatten = function(array, shallow) {
return _.reduce(array, function(memo, value) {
if (_.isArray(value)) return memo.concat(shallow ? value : _.flatten(value));
memo[memo.length] = value;
return memo;
}, []);
};
// Return a version of the array that does not contain the specified value(s).
_.without = function(array) {
return _.difference(array, slice.call(arguments, 1));
};
// Produce a duplicate-free version of the array. If the array has already
// been sorted, you have the option of using a faster algorithm.
// Aliased as `unique`.
_.uniq = _.unique = function(array, isSorted, iterator) {
var initial = iterator ? _.map(array, iterator) : array;
var result = [];
_.reduce(initial, function(memo, el, i) {
if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) {
memo[memo.length] = el;
result[result.length] = array[i];
}
return memo;
}, []);
return result;
};
// Produce an array that contains the union: each distinct element from all of
// the passed-in arrays.
_.union = function() {
return _.uniq(_.flatten(arguments, true));
};
// Produce an array that contains every item shared between all the
// passed-in arrays. (Aliased as "intersect" for back-compat.)
_.intersection = _.intersect = function(array) {
var rest = slice.call(arguments, 1);
return _.filter(_.uniq(array), function(item) {
return _.every(rest, function(other) {
return _.indexOf(other, item) >= 0;
});
});
};
// Take the difference between one array and a number of other arrays.
// Only the elements present in just the first array will remain.
_.difference = function(array) {
var rest = _.flatten(slice.call(arguments, 1));
return _.filter(array, function(value){ return !_.include(rest, value); });
};
// Zip together multiple lists into a single array -- elements that share
// an index go together.
_.zip = function() {
var args = slice.call(arguments);
var length = _.max(_.pluck(args, 'length'));
var results = new Array(length);
for (var i = 0; i < length; i++) results[i] = _.pluck(args, "" + i);
return results;
};
// If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
// we need this function. Return the position of the first occurrence of an
// item in an array, or -1 if the item is not included in the array.
// Delegates to **ECMAScript 5**'s native `indexOf` if available.
// If the array is large and already in sort order, pass `true`
// for **isSorted** to use binary search.
_.indexOf = function(array, item, isSorted) {
if (array == null) return -1;
var i, l;
if (isSorted) {
i = _.sortedIndex(array, item);
return array[i] === item ? i : -1;
}
if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
for (i = 0, l = array.length; i < l; i++) if (i in array && array[i] === item) return i;
return -1;
};
// Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
_.lastIndexOf = function(array, item) {
if (array == null) return -1;
if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
var i = array.length;
while (i--) if (i in array && array[i] === item) return i;
return -1;
};
// Generate an integer Array containing an arithmetic progression. A port of
// the native Python `range()` function. See
// [the Python documentation](http://docs.python.org/library/functions.html#range).
_.range = function(start, stop, step) {
if (arguments.length <= 1) {
stop = start || 0;
start = 0;
}
step = arguments[2] || 1;
var len = Math.max(Math.ceil((stop - start) / step), 0);
var idx = 0;
var range = new Array(len);
while(idx < len) {
range[idx++] = start;
start += step;
}
return range;
};
// Function (ahem) Functions
// ------------------
// Reusable constructor function for prototype setting.
var ctor = function(){};
// Create a function bound to a given object (assigning `this`, and arguments,
// optionally). Binding with arguments is also known as `curry`.
// Delegates to **ECMAScript 5**'s native `Function.bind` if available.
// We check for `func.bind` first, to fail fast when `func` is undefined.
_.bind = function bind(func, context) {
var bound, args;
if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
if (!_.isFunction(func)) throw new TypeError;
args = slice.call(arguments, 2);
return bound = function() {
if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
ctor.prototype = func.prototype;
var self = new ctor;
var result = func.apply(self, args.concat(slice.call(arguments)));
if (Object(result) === result) return result;
return self;
};
};
// Bind all of an object's methods to that object. Useful for ensuring that
// all callbacks defined on an object belong to it.
_.bindAll = function(obj) {
var funcs = slice.call(arguments, 1);
if (funcs.length == 0) funcs = _.functions(obj);
each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
return obj;
};
// Memoize an expensive function by storing its results.
_.memoize = function(func, hasher) {
var memo = {};
hasher || (hasher = _.identity);
return function() {
var key = hasher.apply(this, arguments);
return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
};
};
// Delays a function for the given number of milliseconds, and then calls
// it with the arguments supplied.
_.delay = function(func, wait) {
var args = slice.call(arguments, 2);
return setTimeout(function(){ return func.apply(func, args); }, wait);
};
// Defers a function, scheduling it to run after the current call stack has
// cleared.
_.defer = function(func) {
return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
};
// Returns a function, that, when invoked, will only be triggered at most once
// during a given window of time.
_.throttle = function(func, wait) {
var context, args, timeout, throttling, more;
var whenDone = _.debounce(function(){ more = throttling = false; }, wait);
return function() {
context = this; args = arguments;
var later = function() {
timeout = null;
if (more) func.apply(context, args);
whenDone();
};
if (!timeout) timeout = setTimeout(later, wait);
if (throttling) {
more = true;
} else {
func.apply(context, args);
}
whenDone();
throttling = true;
};
};
// Returns a function, that, as long as it continues to be invoked, will not
// be triggered. The function will be called after it stops being called for
// N milliseconds.
_.debounce = function(func, wait) {
var timeout;
return function() {
var context = this, args = arguments;
var later = function() {
timeout = null;
func.apply(context, args);
};
clearTimeout(timeout);
timeout = setTimeout(later, wait);
};
};
// Returns a function that will be executed at most one time, no matter how
// often you call it. Useful for lazy initialization.
_.once = function(func) {
var ran = false, memo;
return function() {
if (ran) return memo;
ran = true;
return memo = func.apply(this, arguments);
};
};
// Returns the first function passed as an argument to the second,
// allowing you to adjust arguments, run code before and after, and
// conditionally execute the original function.
_.wrap = function(func, wrapper) {
return function() {
var args = [func].concat(slice.call(arguments, 0));
return wrapper.apply(this, args);
};
};
// Returns a function that is the composition of a list of functions, each
// consuming the return value of the function that follows.
_.compose = function() {
var funcs = arguments;
return function() {
var args = arguments;
for (var i = funcs.length - 1; i >= 0; i--) {
args = [funcs[i].apply(this, args)];
}
return args[0];
};
};
// Returns a function that will only be executed after being called N times.
_.after = function(times, func) {
if (times <= 0) return func();
return function() {
if (--times < 1) { return func.apply(this, arguments); }
};
};
// Object Functions
// ----------------
// Retrieve the names of an object's properties.
// Delegates to **ECMAScript 5**'s native `Object.keys`
_.keys = nativeKeys || function(obj) {
if (obj !== Object(obj)) throw new TypeError('Invalid object');
var keys = [];
for (var key in obj) if (_.has(obj, key)) keys[keys.length] = key;
return keys;
};
// Retrieve the values of an object's properties.
_.values = function(obj) {
return _.map(obj, _.identity);
};
// Return a sorted list of the function names available on the object.
// Aliased as `methods`
_.functions = _.methods = function(obj) {
var names = [];
for (var key in obj) {
if (_.isFunction(obj[key])) names.push(key);
}
return names.sort();
};
// Extend a given object with all the properties in passed-in object(s).
_.extend = function(obj) {
each(slice.call(arguments, 1), function(source) {
for (var prop in source) {
obj[prop] = source[prop];
}
});
return obj;
};
// Fill in a given object with default properties.
_.defaults = function(obj) {
each(slice.call(arguments, 1), function(source) {
for (var prop in source) {
if (obj[prop] == null) obj[prop] = source[prop];
}
});
return obj;
};
// Create a (shallow-cloned) duplicate of an object.
_.clone = function(obj) {
if (!_.isObject(obj)) return obj;
return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
};
// Invokes interceptor with the obj, and then returns obj.
// The primary purpose of this method is to "tap into" a method chain, in
// order to perform operations on intermediate results within the chain.
_.tap = function(obj, interceptor) {
interceptor(obj);
return obj;
};
// Internal recursive comparison function.
function eq(a, b, stack) {
// Identical objects are equal. `0 === -0`, but they aren't identical.
// See the Harmony `egal` proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.
if (a === b) return a !== 0 || 1 / a == 1 / b;
// A strict comparison is necessary because `null == undefined`.
if (a == null || b == null) return a === b;
// Unwrap any wrapped objects.
if (a._chain) a = a._wrapped;
if (b._chain) b = b._wrapped;
// Invoke a custom `isEqual` method if one is provided.
if (a.isEqual && _.isFunction(a.isEqual)) return a.isEqual(b);
if (b.isEqual && _.isFunction(b.isEqual)) return b.isEqual(a);
// Compare `[[Class]]` names.
var className = toString.call(a);
if (className != toString.call(b)) return false;
switch (className) {
// Strings, numbers, dates, and booleans are compared by value.
case '[object String]':
// Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
// equivalent to `new String("5")`.
return a == String(b);
case '[object Number]':
// `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
// other numeric values.
return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b);
case '[object Date]':
case '[object Boolean]':
// Coerce dates and booleans to numeric primitive values. Dates are compared by their
// millisecond representations. Note that invalid dates with millisecond representations
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};
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var tmpl = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};' +
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wrapper.prototype.value = function() {
return this._wrapped;
};
}).call(this);

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/*
* websupport.js
* ~~~~~~~~~~~~~
*
* sphinx.websupport utilities for all documentation.
*
* :copyright: Copyright 2007-2018 by the Sphinx team, see AUTHORS.
* :license: BSD, see LICENSE for details.
*
*/
(function($) {
$.fn.autogrow = function() {
return this.each(function() {
var textarea = this;
$.fn.autogrow.resize(textarea);
$(textarea)
.focus(function() {
textarea.interval = setInterval(function() {
$.fn.autogrow.resize(textarea);
}, 500);
})
.blur(function() {
clearInterval(textarea.interval);
});
});
};
$.fn.autogrow.resize = function(textarea) {
var lineHeight = parseInt($(textarea).css('line-height'), 10);
var lines = textarea.value.split('\n');
var columns = textarea.cols;
var lineCount = 0;
$.each(lines, function() {
lineCount += Math.ceil(this.length / columns) || 1;
});
var height = lineHeight * (lineCount + 1);
$(textarea).css('height', height);
};
})(jQuery);
(function($) {
var comp, by;
function init() {
initEvents();
initComparator();
}
function initEvents() {
$(document).on("click", 'a.comment-close', function(event) {
event.preventDefault();
hide($(this).attr('id').substring(2));
});
$(document).on("click", 'a.vote', function(event) {
event.preventDefault();
handleVote($(this));
});
$(document).on("click", 'a.reply', function(event) {
event.preventDefault();
openReply($(this).attr('id').substring(2));
});
$(document).on("click", 'a.close-reply', function(event) {
event.preventDefault();
closeReply($(this).attr('id').substring(2));
});
$(document).on("click", 'a.sort-option', function(event) {
event.preventDefault();
handleReSort($(this));
});
$(document).on("click", 'a.show-proposal', function(event) {
event.preventDefault();
showProposal($(this).attr('id').substring(2));
});
$(document).on("click", 'a.hide-proposal', function(event) {
event.preventDefault();
hideProposal($(this).attr('id').substring(2));
});
$(document).on("click", 'a.show-propose-change', function(event) {
event.preventDefault();
showProposeChange($(this).attr('id').substring(2));
});
$(document).on("click", 'a.hide-propose-change', function(event) {
event.preventDefault();
hideProposeChange($(this).attr('id').substring(2));
});
$(document).on("click", 'a.accept-comment', function(event) {
event.preventDefault();
acceptComment($(this).attr('id').substring(2));
});
$(document).on("click", 'a.delete-comment', function(event) {
event.preventDefault();
deleteComment($(this).attr('id').substring(2));
});
$(document).on("click", 'a.comment-markup', function(event) {
event.preventDefault();
toggleCommentMarkupBox($(this).attr('id').substring(2));
});
}
/**
* Set comp, which is a comparator function used for sorting and
* inserting comments into the list.
*/
function setComparator() {
// If the first three letters are "asc", sort in ascending order
// and remove the prefix.
if (by.substring(0,3) == 'asc') {
var i = by.substring(3);
comp = function(a, b) { return a[i] - b[i]; };
} else {
// Otherwise sort in descending order.
comp = function(a, b) { return b[by] - a[by]; };
}
// Reset link styles and format the selected sort option.
$('a.sel').attr('href', '#').removeClass('sel');
$('a.by' + by).removeAttr('href').addClass('sel');
}
/**
* Create a comp function. If the user has preferences stored in
* the sortBy cookie, use those, otherwise use the default.
*/
function initComparator() {
by = 'rating'; // Default to sort by rating.
// If the sortBy cookie is set, use that instead.
if (document.cookie.length > 0) {
var start = document.cookie.indexOf('sortBy=');
if (start != -1) {
start = start + 7;
var end = document.cookie.indexOf(";", start);
if (end == -1) {
end = document.cookie.length;
by = unescape(document.cookie.substring(start, end));
}
}
}
setComparator();
}
/**
* Show a comment div.
*/
function show(id) {
$('#ao' + id).hide();
$('#ah' + id).show();
var context = $.extend({id: id}, opts);
var popup = $(renderTemplate(popupTemplate, context)).hide();
popup.find('textarea[name="proposal"]').hide();
popup.find('a.by' + by).addClass('sel');
var form = popup.find('#cf' + id);
form.submit(function(event) {
event.preventDefault();
addComment(form);
});
$('#s' + id).after(popup);
popup.slideDown('fast', function() {
getComments(id);
});
}
/**
* Hide a comment div.
*/
function hide(id) {
$('#ah' + id).hide();
$('#ao' + id).show();
var div = $('#sc' + id);
div.slideUp('fast', function() {
div.remove();
});
}
/**
* Perform an ajax request to get comments for a node
* and insert the comments into the comments tree.
*/
function getComments(id) {
$.ajax({
type: 'GET',
url: opts.getCommentsURL,
data: {node: id},
success: function(data, textStatus, request) {
var ul = $('#cl' + id);
var speed = 100;
$('#cf' + id)
.find('textarea[name="proposal"]')
.data('source', data.source);
if (data.comments.length === 0) {
ul.html('<li>No comments yet.</li>');
ul.data('empty', true);
} else {
// If there are comments, sort them and put them in the list.
var comments = sortComments(data.comments);
speed = data.comments.length * 100;
appendComments(comments, ul);
ul.data('empty', false);
}
$('#cn' + id).slideUp(speed + 200);
ul.slideDown(speed);
},
error: function(request, textStatus, error) {
showError('Oops, there was a problem retrieving the comments.');
},
dataType: 'json'
});
}
/**
* Add a comment via ajax and insert the comment into the comment tree.
*/
function addComment(form) {
var node_id = form.find('input[name="node"]').val();
var parent_id = form.find('input[name="parent"]').val();
var text = form.find('textarea[name="comment"]').val();
var proposal = form.find('textarea[name="proposal"]').val();
if (text == '') {
showError('Please enter a comment.');
return;
}
// Disable the form that is being submitted.
form.find('textarea,input').attr('disabled', 'disabled');
// Send the comment to the server.
$.ajax({
type: "POST",
url: opts.addCommentURL,
dataType: 'json',
data: {
node: node_id,
parent: parent_id,
text: text,
proposal: proposal
},
success: function(data, textStatus, error) {
// Reset the form.
if (node_id) {
hideProposeChange(node_id);
}
form.find('textarea')
.val('')
.add(form.find('input'))
.removeAttr('disabled');
var ul = $('#cl' + (node_id || parent_id));
if (ul.data('empty')) {
$(ul).empty();
ul.data('empty', false);
}
insertComment(data.comment);
var ao = $('#ao' + node_id);
ao.find('img').attr({'src': opts.commentBrightImage});
if (node_id) {
// if this was a "root" comment, remove the commenting box
// (the user can get it back by reopening the comment popup)
$('#ca' + node_id).slideUp();
}
},
error: function(request, textStatus, error) {
form.find('textarea,input').removeAttr('disabled');
showError('Oops, there was a problem adding the comment.');
}
});
}
/**
* Recursively append comments to the main comment list and children
* lists, creating the comment tree.
*/
function appendComments(comments, ul) {
$.each(comments, function() {
var div = createCommentDiv(this);
ul.append($(document.createElement('li')).html(div));
appendComments(this.children, div.find('ul.comment-children'));
// To avoid stagnating data, don't store the comments children in data.
this.children = null;
div.data('comment', this);
});
}
/**
* After adding a new comment, it must be inserted in the correct
* location in the comment tree.
*/
function insertComment(comment) {
var div = createCommentDiv(comment);
// To avoid stagnating data, don't store the comments children in data.
comment.children = null;
div.data('comment', comment);
var ul = $('#cl' + (comment.node || comment.parent));
var siblings = getChildren(ul);
var li = $(document.createElement('li'));
li.hide();
// Determine where in the parents children list to insert this comment.
for(var i=0; i < siblings.length; i++) {
if (comp(comment, siblings[i]) <= 0) {
$('#cd' + siblings[i].id)
.parent()
.before(li.html(div));
li.slideDown('fast');
return;
}
}
// If we get here, this comment rates lower than all the others,
// or it is the only comment in the list.
ul.append(li.html(div));
li.slideDown('fast');
}
function acceptComment(id) {
$.ajax({
type: 'POST',
url: opts.acceptCommentURL,
data: {id: id},
success: function(data, textStatus, request) {
$('#cm' + id).fadeOut('fast');
$('#cd' + id).removeClass('moderate');
},
error: function(request, textStatus, error) {
showError('Oops, there was a problem accepting the comment.');
}
});
}
function deleteComment(id) {
$.ajax({
type: 'POST',
url: opts.deleteCommentURL,
data: {id: id},
success: function(data, textStatus, request) {
var div = $('#cd' + id);
if (data == 'delete') {
// Moderator mode: remove the comment and all children immediately
div.slideUp('fast', function() {
div.remove();
});
return;
}
// User mode: only mark the comment as deleted
div
.find('span.user-id:first')
.text('[deleted]').end()
.find('div.comment-text:first')
.text('[deleted]').end()
.find('#cm' + id + ', #dc' + id + ', #ac' + id + ', #rc' + id +
', #sp' + id + ', #hp' + id + ', #cr' + id + ', #rl' + id)
.remove();
var comment = div.data('comment');
comment.username = '[deleted]';
comment.text = '[deleted]';
div.data('comment', comment);
},
error: function(request, textStatus, error) {
showError('Oops, there was a problem deleting the comment.');
}
});
}
function showProposal(id) {
$('#sp' + id).hide();
$('#hp' + id).show();
$('#pr' + id).slideDown('fast');
}
function hideProposal(id) {
$('#hp' + id).hide();
$('#sp' + id).show();
$('#pr' + id).slideUp('fast');
}
function showProposeChange(id) {
$('#pc' + id).hide();
$('#hc' + id).show();
var textarea = $('#pt' + id);
textarea.val(textarea.data('source'));
$.fn.autogrow.resize(textarea[0]);
textarea.slideDown('fast');
}
function hideProposeChange(id) {
$('#hc' + id).hide();
$('#pc' + id).show();
var textarea = $('#pt' + id);
textarea.val('').removeAttr('disabled');
textarea.slideUp('fast');
}
function toggleCommentMarkupBox(id) {
$('#mb' + id).toggle();
}
/** Handle when the user clicks on a sort by link. */
function handleReSort(link) {
var classes = link.attr('class').split(/\s+/);
for (var i=0; i<classes.length; i++) {
if (classes[i] != 'sort-option') {
by = classes[i].substring(2);
}
}
setComparator();
// Save/update the sortBy cookie.
var expiration = new Date();
expiration.setDate(expiration.getDate() + 365);
document.cookie= 'sortBy=' + escape(by) +
';expires=' + expiration.toUTCString();
$('ul.comment-ul').each(function(index, ul) {
var comments = getChildren($(ul), true);
comments = sortComments(comments);
appendComments(comments, $(ul).empty());
});
}
/**
* Function to process a vote when a user clicks an arrow.
*/
function handleVote(link) {
if (!opts.voting) {
showError("You'll need to login to vote.");
return;
}
var id = link.attr('id');
if (!id) {
// Didn't click on one of the voting arrows.
return;
}
// If it is an unvote, the new vote value is 0,
// Otherwise it's 1 for an upvote, or -1 for a downvote.
var value = 0;
if (id.charAt(1) != 'u') {
value = id.charAt(0) == 'u' ? 1 : -1;
}
// The data to be sent to the server.
var d = {
comment_id: id.substring(2),
value: value
};
// Swap the vote and unvote links.
link.hide();
$('#' + id.charAt(0) + (id.charAt(1) == 'u' ? 'v' : 'u') + d.comment_id)
.show();
// The div the comment is displayed in.
var div = $('div#cd' + d.comment_id);
var data = div.data('comment');
// If this is not an unvote, and the other vote arrow has
// already been pressed, unpress it.
if ((d.value !== 0) && (data.vote === d.value * -1)) {
$('#' + (d.value == 1 ? 'd' : 'u') + 'u' + d.comment_id).hide();
$('#' + (d.value == 1 ? 'd' : 'u') + 'v' + d.comment_id).show();
}
// Update the comments rating in the local data.
data.rating += (data.vote === 0) ? d.value : (d.value - data.vote);
data.vote = d.value;
div.data('comment', data);
// Change the rating text.
div.find('.rating:first')
.text(data.rating + ' point' + (data.rating == 1 ? '' : 's'));
// Send the vote information to the server.
$.ajax({
type: "POST",
url: opts.processVoteURL,
data: d,
error: function(request, textStatus, error) {
showError('Oops, there was a problem casting that vote.');
}
});
}
/**
* Open a reply form used to reply to an existing comment.
*/
function openReply(id) {
// Swap out the reply link for the hide link
$('#rl' + id).hide();
$('#cr' + id).show();
// Add the reply li to the children ul.
var div = $(renderTemplate(replyTemplate, {id: id})).hide();
$('#cl' + id)
.prepend(div)
// Setup the submit handler for the reply form.
.find('#rf' + id)
.submit(function(event) {
event.preventDefault();
addComment($('#rf' + id));
closeReply(id);
})
.find('input[type=button]')
.click(function() {
closeReply(id);
});
div.slideDown('fast', function() {
$('#rf' + id).find('textarea').focus();
});
}
/**
* Close the reply form opened with openReply.
*/
function closeReply(id) {
// Remove the reply div from the DOM.
$('#rd' + id).slideUp('fast', function() {
$(this).remove();
});
// Swap out the hide link for the reply link
$('#cr' + id).hide();
$('#rl' + id).show();
}
/**
* Recursively sort a tree of comments using the comp comparator.
*/
function sortComments(comments) {
comments.sort(comp);
$.each(comments, function() {
this.children = sortComments(this.children);
});
return comments;
}
/**
* Get the children comments from a ul. If recursive is true,
* recursively include childrens' children.
*/
function getChildren(ul, recursive) {
var children = [];
ul.children().children("[id^='cd']")
.each(function() {
var comment = $(this).data('comment');
if (recursive)
comment.children = getChildren($(this).find('#cl' + comment.id), true);
children.push(comment);
});
return children;
}
/** Create a div to display a comment in. */
function createCommentDiv(comment) {
if (!comment.displayed && !opts.moderator) {
return $('<div class="moderate">Thank you! Your comment will show up '
+ 'once it is has been approved by a moderator.</div>');
}
// Prettify the comment rating.
comment.pretty_rating = comment.rating + ' point' +
(comment.rating == 1 ? '' : 's');
// Make a class (for displaying not yet moderated comments differently)
comment.css_class = comment.displayed ? '' : ' moderate';
// Create a div for this comment.
var context = $.extend({}, opts, comment);
var div = $(renderTemplate(commentTemplate, context));
// If the user has voted on this comment, highlight the correct arrow.
if (comment.vote) {
var direction = (comment.vote == 1) ? 'u' : 'd';
div.find('#' + direction + 'v' + comment.id).hide();
div.find('#' + direction + 'u' + comment.id).show();
}
if (opts.moderator || comment.text != '[deleted]') {
div.find('a.reply').show();
if (comment.proposal_diff)
div.find('#sp' + comment.id).show();
if (opts.moderator && !comment.displayed)
div.find('#cm' + comment.id).show();
if (opts.moderator || (opts.username == comment.username))
div.find('#dc' + comment.id).show();
}
return div;
}
/**
* A simple template renderer. Placeholders such as <%id%> are replaced
* by context['id'] with items being escaped. Placeholders such as <#id#>
* are not escaped.
*/
function renderTemplate(template, context) {
var esc = $(document.createElement('div'));
function handle(ph, escape) {
var cur = context;
$.each(ph.split('.'), function() {
cur = cur[this];
});
return escape ? esc.text(cur || "").html() : cur;
}
return template.replace(/<([%#])([\w\.]*)\1>/g, function() {
return handle(arguments[2], arguments[1] == '%' ? true : false);
});
}
/** Flash an error message briefly. */
function showError(message) {
$(document.createElement('div')).attr({'class': 'popup-error'})
.append($(document.createElement('div'))
.attr({'class': 'error-message'}).text(message))
.appendTo('body')
.fadeIn("slow")
.delay(2000)
.fadeOut("slow");
}
/** Add a link the user uses to open the comments popup. */
$.fn.comment = function() {
return this.each(function() {
var id = $(this).attr('id').substring(1);
var count = COMMENT_METADATA[id];
var title = count + ' comment' + (count == 1 ? '' : 's');
var image = count > 0 ? opts.commentBrightImage : opts.commentImage;
var addcls = count == 0 ? ' nocomment' : '';
$(this)
.append(
$(document.createElement('a')).attr({
href: '#',
'class': 'sphinx-comment-open' + addcls,
id: 'ao' + id
})
.append($(document.createElement('img')).attr({
src: image,
alt: 'comment',
title: title
}))
.click(function(event) {
event.preventDefault();
show($(this).attr('id').substring(2));
})
)
.append(
$(document.createElement('a')).attr({
href: '#',
'class': 'sphinx-comment-close hidden',
id: 'ah' + id
})
.append($(document.createElement('img')).attr({
src: opts.closeCommentImage,
alt: 'close',
title: 'close'
}))
.click(function(event) {
event.preventDefault();
hide($(this).attr('id').substring(2));
})
);
});
};
var opts = {
processVoteURL: '/_process_vote',
addCommentURL: '/_add_comment',
getCommentsURL: '/_get_comments',
acceptCommentURL: '/_accept_comment',
deleteCommentURL: '/_delete_comment',
commentImage: '/static/_static/comment.png',
closeCommentImage: '/static/_static/comment-close.png',
loadingImage: '/static/_static/ajax-loader.gif',
commentBrightImage: '/static/_static/comment-bright.png',
upArrow: '/static/_static/up.png',
downArrow: '/static/_static/down.png',
upArrowPressed: '/static/_static/up-pressed.png',
downArrowPressed: '/static/_static/down-pressed.png',
voting: false,
moderator: false
};
if (typeof COMMENT_OPTIONS != "undefined") {
opts = jQuery.extend(opts, COMMENT_OPTIONS);
}
var popupTemplate = '\
<div class="sphinx-comments" id="sc<%id%>">\
<p class="sort-options">\
Sort by:\
<a href="#" class="sort-option byrating">best rated</a>\
<a href="#" class="sort-option byascage">newest</a>\
<a href="#" class="sort-option byage">oldest</a>\
</p>\
<div class="comment-header">Comments</div>\
<div class="comment-loading" id="cn<%id%>">\
loading comments... <img src="<%loadingImage%>" alt="" /></div>\
<ul id="cl<%id%>" class="comment-ul"></ul>\
<div id="ca<%id%>">\
<p class="add-a-comment">Add a comment\
(<a href="#" class="comment-markup" id="ab<%id%>">markup</a>):</p>\
<div class="comment-markup-box" id="mb<%id%>">\
reStructured text markup: <i>*emph*</i>, <b>**strong**</b>, \
<code>``code``</code>, \
code blocks: <code>::</code> and an indented block after blank line</div>\
<form method="post" id="cf<%id%>" class="comment-form" action="">\
<textarea name="comment" cols="80"></textarea>\
<p class="propose-button">\
<a href="#" id="pc<%id%>" class="show-propose-change">\
Propose a change &#9657;\
</a>\
<a href="#" id="hc<%id%>" class="hide-propose-change">\
Propose a change &#9663;\
</a>\
</p>\
<textarea name="proposal" id="pt<%id%>" cols="80"\
spellcheck="false"></textarea>\
<input type="submit" value="Add comment" />\
<input type="hidden" name="node" value="<%id%>" />\
<input type="hidden" name="parent" value="" />\
</form>\
</div>\
</div>';
var commentTemplate = '\
<div id="cd<%id%>" class="sphinx-comment<%css_class%>">\
<div class="vote">\
<div class="arrow">\
<a href="#" id="uv<%id%>" class="vote" title="vote up">\
<img src="<%upArrow%>" />\
</a>\
<a href="#" id="uu<%id%>" class="un vote" title="vote up">\
<img src="<%upArrowPressed%>" />\
</a>\
</div>\
<div class="arrow">\
<a href="#" id="dv<%id%>" class="vote" title="vote down">\
<img src="<%downArrow%>" id="da<%id%>" />\
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<h1 id="index">Index</h1>
<div class="genindex-jumpbox">
<a href="#A"><strong>A</strong></a>
| <a href="#B"><strong>B</strong></a>
| <a href="#C"><strong>C</strong></a>
| <a href="#D"><strong>D</strong></a>
| <a href="#E"><strong>E</strong></a>
| <a href="#F"><strong>F</strong></a>
| <a href="#G"><strong>G</strong></a>
| <a href="#H"><strong>H</strong></a>
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| <a href="#J"><strong>J</strong></a>
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| <a href="#W"><strong>W</strong></a>
| <a href="#X"><strong>X</strong></a>
| <a href="#Z"><strong>Z</strong></a>
</div>
<h2 id="A">A</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.add_aliases">add_aliases() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.DefinitionWrapper.add_def">add_def() (joy.library.DefinitionWrapper class method)</a>
</li>
<li><a href="library.html#joy.library.DefinitionWrapper.add_definitions">add_definitions() (joy.library.DefinitionWrapper class method)</a>
</li>
</ul></td>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.app1">app1() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.app2">app2() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.app3">app3() (in module joy.library)</a>
</li>
</ul></td>
</tr></table>
<h2 id="B">B</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.b">b() (in module joy.library)</a>
</li>
</ul></td>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.BinaryBuiltinWrapper">BinaryBuiltinWrapper() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.branch">branch() (in module joy.library)</a>
</li>
</ul></td>
</tr></table>
<h2 id="C">C</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.choice">choice() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.clear">clear() (in module joy.library)</a>
</li>
</ul></td>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.concat">concat() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.cons">cons() (in module joy.library)</a>
</li>
</ul></td>
</tr></table>
<h2 id="D">D</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.DefinitionWrapper">DefinitionWrapper (class in joy.library)</a>
</li>
<li><a href="library.html#joy.library.dip">dip() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.dipd">dipd() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.dipdd">dipdd() (in module joy.library)</a>
</li>
</ul></td>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.divmod_">divmod_() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.drop">drop() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.dup">dup() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.dupd">dupd() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.dupdip">dupdip() (in module joy.library)</a>
</li>
</ul></td>
</tr></table>
<h2 id="E">E</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="stack.html#joy.utils.stack.expression_to_string">expression_to_string() (in module joy.utils.stack)</a>
</li>
</ul></td>
</tr></table>
<h2 id="F">F</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.first">first() (in module joy.library)</a>
</li>
</ul></td>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.floor">floor() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.FunctionWrapper">FunctionWrapper() (in module joy.library)</a>
</li>
</ul></td>
</tr></table>
<h2 id="G">G</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.genrec">genrec() (in module joy.library)</a>
</li>
</ul></td>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.getitem">getitem() (in module joy.library)</a>
</li>
</ul></td>
</tr></table>
<h2 id="H">H</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.help_">help_() (in module joy.library)</a>
</li>
</ul></td>
</tr></table>
<h2 id="I">I</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.i">i() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.id_">id_() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.ifte">ifte() (in module joy.library)</a>
</li>
</ul></td>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.infra">infra() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.initialize">initialize() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.inscribe">inscribe() (in module joy.library)</a>
</li>
<li><a href="stack.html#joy.utils.stack.iter_stack">iter_stack() (in module joy.utils.stack)</a>
</li>
</ul></td>
</tr></table>
<h2 id="J">J</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="joy.html#joy.joy.joy">joy() (in module joy.joy)</a>
</li>
<li><a href="joy.html#module-joy.joy">joy.joy (module)</a>
</li>
<li><a href="library.html#module-joy.library">joy.library (module)</a>
</li>
</ul></td>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="parser.html#module-joy.parser">joy.parser (module)</a>
</li>
<li><a href="pretty.html#module-joy.utils.pretty_print">joy.utils.pretty_print (module)</a>
</li>
<li><a href="stack.html#module-joy.utils.stack">joy.utils.stack (module)</a>
</li>
</ul></td>
</tr></table>
<h2 id="L">L</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="stack.html#joy.utils.stack.list_to_stack">list_to_stack() (in module joy.utils.stack)</a>
</li>
</ul></td>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.loop">loop() (in module joy.library)</a>
</li>
</ul></td>
</tr></table>
<h2 id="M">M</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.map_">map_() (in module joy.library)</a>
</li>
</ul></td>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.max_">max_() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.min_">min_() (in module joy.library)</a>
</li>
</ul></td>
</tr></table>
<h2 id="O">O</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.over">over() (in module joy.library)</a>
</li>
</ul></td>
</tr></table>
<h2 id="P">P</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.parse">parse() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.DefinitionWrapper.parse_definition">parse_definition() (joy.library.DefinitionWrapper class method)</a>
</li>
<li><a href="parser.html#joy.parser.ParseError">ParseError</a>
</li>
<li><a href="stack.html#joy.utils.stack.pick">pick() (in module joy.utils.stack)</a>
</li>
<li><a href="library.html#joy.library.pm">pm() (in module joy.library)</a>
</li>
</ul></td>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.pop">pop() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.popd">popd() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.popdd">popdd() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.popop">popop() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.pred">pred() (in module joy.library)</a>
</li>
<li><a href="stack.html#joy.utils.stack.pushback">pushback() (in module joy.utils.stack)</a>
</li>
</ul></td>
</tr></table>
<h2 id="R">R</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.remove">remove() (in module joy.library)</a>
</li>
<li><a href="joy.html#joy.joy.repl">repl() (in module joy.joy)</a>
</li>
<li><a href="library.html#joy.library.rest">rest() (in module joy.library)</a>
</li>
</ul></td>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.reverse">reverse() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.rolldown">rolldown() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.rollup">rollup() (in module joy.library)</a>
</li>
<li><a href="joy.html#joy.joy.run">run() (in module joy.joy)</a>
</li>
</ul></td>
</tr></table>
<h2 id="S">S</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.select">select() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.sharing">sharing() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.shunt">shunt() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.SimpleFunctionWrapper">SimpleFunctionWrapper() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.sort_">sort_() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.sqrt">sqrt() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.stack_">stack_() (in module joy.library)</a>
</li>
</ul></td>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="stack.html#joy.utils.stack.stack_to_string">stack_to_string() (in module joy.utils.stack)</a>
</li>
<li><a href="library.html#joy.library.step">step() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.succ">succ() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.sum_">sum_() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.swaack">swaack() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.swap">swap() (in module joy.library)</a>
</li>
<li><a href="parser.html#joy.parser.Symbol">Symbol (class in joy.parser)</a>
</li>
</ul></td>
</tr></table>
<h2 id="T">T</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.take">take() (in module joy.library)</a>
</li>
<li><a href="parser.html#joy.parser.text_to_expression">text_to_expression() (in module joy.parser)</a>
</li>
</ul></td>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.times">times() (in module joy.library)</a>
</li>
<li><a href="pretty.html#joy.utils.pretty_print.TracePrinter">TracePrinter (class in joy.utils.pretty_print)</a>
</li>
<li><a href="library.html#joy.library.tuck">tuck() (in module joy.library)</a>
</li>
</ul></td>
</tr></table>
<h2 id="U">U</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.UnaryBuiltinWrapper">UnaryBuiltinWrapper() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.uncons">uncons() (in module joy.library)</a>
</li>
</ul></td>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.unique">unique() (in module joy.library)</a>
</li>
<li><a href="library.html#joy.library.unstack">unstack() (in module joy.library)</a>
</li>
</ul></td>
</tr></table>
<h2 id="V">V</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="pretty.html#joy.utils.pretty_print.TracePrinter.viewer">viewer() (joy.utils.pretty_print.TracePrinter method)</a>
</li>
</ul></td>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.void">void() (in module joy.library)</a>
</li>
</ul></td>
</tr></table>
<h2 id="W">W</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.warranty">warranty() (in module joy.library)</a>
</li>
</ul></td>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.words">words() (in module joy.library)</a>
</li>
</ul></td>
</tr></table>
<h2 id="X">X</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.x">x() (in module joy.library)</a>
</li>
</ul></td>
</tr></table>
<h2 id="Z">Z</h2>
<table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul>
<li><a href="library.html#joy.library.zip_">zip_() (in module joy.library)</a>
</li>
</ul></td>
</tr></table>
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<h1>Thun 0.1.0 Documentation<a class="headerlink" href="#thun-release-documentation" title="Permalink to this headline"></a></h1>
<p>Thun is dialect of Joy written in Python.</p>
<p><a class="reference external" href="https://en.wikipedia.org/wiki/Joy_(programming_language)">Joy</a> is a programming language created by Manfred von Thun that is easy to
use and understand and has many other nice properties. This Python
package implements an interpreter for a dialect of Joy that attempts to
stay very close to the spirit of Joy but does not precisely match the
behaviour of the original version(s) written in C. The main difference
between Thun and the originals, other than being written in Python, is
that it works by the “Continuation-Passing Style”.</p>
<p>I hope that this package is useful in the sense that it provides an
additional joy interpreter (the binary in the archive from La Trobe seems
to run just fine on my modern Linux machine!) But I also hope that you
can read and understand the Python code and play with the implementation
itself.</p>
<div class="section" id="quick-start">
<h2>Quick Start<a class="headerlink" href="#quick-start" title="Permalink to this headline"></a></h2>
<p>Install from <a class="reference external" href="https://pypi.org/project/Thun/">PyPI</a> in the usual way:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ pip install Thun
</pre></div>
</div>
<p>To start the REPL:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ python -m joy
</pre></div>
</div>
</div>
<div class="section" id="project-hosted-on-osdn">
<h2>Project Hosted on <a class="reference external" href="https://osdn.net/projects/joypy/">OSDN</a><a class="headerlink" href="#project-hosted-on-osdn" title="Permalink to this headline"></a></h2>
<ul class="simple">
<li><a class="reference external" href="https://osdn.net/projects/joypy/scm/hg/Joypy/tree/tip/">Source Repository</a> (Mercurial)</li>
<li><a class="reference external" href="https://osdn.net/projects/joypy/ticket/">Bug tracker</a></li>
<li><a class="reference external" href="https://osdn.net/projects/joypy/forums/">Forums</a></li>
<li><a class="reference external" href="https://osdn.net/projects/joypy/lists/">Mailing list</a></li>
</ul>
</div>
<div class="section" id="information-on-the-joy-language">
<h2>Information on the Joy language<a class="headerlink" href="#information-on-the-joy-language" title="Permalink to this headline"></a></h2>
<p>See <a class="reference external" href="https://en.wikipedia.org/wiki/Joy_(programming_language)">the Wikipedia article</a> and <a class="reference external" href="http://www.kevinalbrecht.com/code/joy-mirror/index.html">Kevin Albrecht’s mirror of Manfred von Thun’s original website for the Joy Programming Language</a> for more information on the Joy language.</p>
<p>The best source (no pun intended) for learning about Joy is the
information made available at the website of La Trobe University (see the
mirror link above) which contains source code for the
original C interpreter, Joy language source code for various functions,
and a great deal of fascinating material mostly written by Von Thun on
Joy and its deeper facets as well as how to program in it and several
interesting aspects. It’s quite a treasure trove.</p>
</div>
<div class="section" id="documentation-on-thun-dialect">
<h2>Documentation on Thun Dialect<a class="headerlink" href="#documentation-on-thun-dialect" title="Permalink to this headline"></a></h2>
<p>Thun is implemented in Python. The following is specific information for this dialect of Joy.
There are also some Jupyter notebooks.</p>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="joy.html">Joy Interpreter</a><ul>
<li class="toctree-l2"><a class="reference internal" href="joy.html#module-joy.joy"><code class="docutils literal notranslate"><span class="pre">joy.joy</span></code></a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="stack.html">Stack or Quote or Sequence or List…</a><ul>
<li class="toctree-l2"><a class="reference internal" href="stack.html#module-joy.utils.stack"><code class="docutils literal notranslate"><span class="pre">joy.utils.stack</span></code></a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="parser.html">Parsing Text into Joy Expressions</a><ul>
<li class="toctree-l2"><a class="reference internal" href="parser.html#module-joy.parser"><code class="docutils literal notranslate"><span class="pre">joy.parser</span></code></a></li>
<li class="toctree-l2"><a class="reference internal" href="parser.html#parser-internals">Parser Internals</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="pretty.html">Tracing Joy Execution</a><ul>
<li class="toctree-l2"><a class="reference internal" href="pretty.html#module-joy.utils.pretty_print"><code class="docutils literal notranslate"><span class="pre">joy.utils.pretty_print</span></code></a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="library.html">Function Reference</a><ul>
<li class="toctree-l2"><a class="reference internal" href="library.html#module-joy.library"><code class="docutils literal notranslate"><span class="pre">joy.library</span></code></a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="lib.html">Functions Grouped by, er, Function with Examples</a><ul>
<li class="toctree-l2"><a class="reference internal" href="lib.html#stack-chatter">Stack Chatter</a></li>
<li class="toctree-l2"><a class="reference internal" href="lib.html#list-words">List words</a></li>
<li class="toctree-l2"><a class="reference internal" href="lib.html#math-words">Math words</a></li>
<li class="toctree-l2"><a class="reference internal" href="lib.html#logic-and-comparison">Logic and Comparison</a></li>
<li class="toctree-l2"><a class="reference internal" href="lib.html#miscellaneous">Miscellaneous</a></li>
<li class="toctree-l2"><a class="reference internal" href="lib.html#combinators">Combinators</a></li>
<li class="toctree-l2"><a class="reference internal" href="lib.html#void"><code class="docutils literal notranslate"><span class="pre">void</span></code></a></li>
</ul>
</li>
</ul>
</div>
</div>
</div>
<div class="section" id="indices-and-tables">
<h1>Indices and tables<a class="headerlink" href="#indices-and-tables" title="Permalink to this headline"></a></h1>
<ul class="simple">
<li><a class="reference internal" href="genindex.html"><span class="std std-ref">Index</span></a></li>
<li><a class="reference internal" href="py-modindex.html"><span class="std std-ref">Module Index</span></a></li>
<li><a class="reference internal" href="search.html"><span class="std std-ref">Search Page</span></a></li>
</ul>
</div>
</div>
</div>
</div>
<div class="sphinxsidebar" role="navigation" aria-label="main navigation">
<div class="sphinxsidebarwrapper">
<h3><a href="#">Table Of Contents</a></h3>
<ul>
<li><a class="reference internal" href="#">Thun 0.1.0 Documentation</a><ul>
<li><a class="reference internal" href="#quick-start">Quick Start</a></li>
<li><a class="reference internal" href="#project-hosted-on-osdn">Project Hosted on OSDN</a></li>
<li><a class="reference internal" href="#information-on-the-joy-language">Information on the Joy language</a></li>
<li><a class="reference internal" href="#documentation-on-thun-dialect">Documentation on Thun Dialect</a></li>
</ul>
</li>
<li><a class="reference internal" href="#indices-and-tables">Indices and tables</a></li>
</ul>
<div class="relations">
<h3>Related Topics</h3>
<ul>
<li><a href="#">Documentation overview</a><ul>
<li>Next: <a href="joy.html" title="next chapter">Joy Interpreter</a></li>
</ul></li>
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<div class="section" id="joy-interpreter">
<h1>Joy Interpreter<a class="headerlink" href="#joy-interpreter" title="Permalink to this headline"></a></h1>
<div class="section" id="module-joy.joy">
<span id="joy-joy"></span><h2><code class="docutils literal notranslate"><span class="pre">joy.joy</span></code><a class="headerlink" href="#module-joy.joy" title="Permalink to this headline"></a></h2>
<p>This module implements an interpreter for a dialect of Joy that
attempts to stay very close to the spirit of Joy but does not precisely
match the behaviour of the original version(s) written in C.</p>
<dl class="function">
<dt id="joy.joy.joy">
<code class="descclassname">joy.joy.</code><code class="descname">joy</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em>, <em>viewer=None</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/joy.html#joy"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.joy.joy" title="Permalink to this definition"></a></dt>
<dd><p>Evaluate the Joy expression on the stack.</p>
<p>The basic joy() function is quite straightforward. It iterates through a
sequence of terms which are either literals (strings, numbers, sequences)
or functions. Literals are put onto the stack and functions are
executed.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><strong>stack</strong> (<em>quote</em>) – The stack.</li>
<li><strong>expression</strong> (<em>quote</em>) – The expression to evaluate.</li>
<li><strong>dictionary</strong> (<em>dict</em>) – A <cite>dict</cite> mapping names to Joy functions.</li>
<li><strong>viewer</strong> (<em>function</em>) – Optional viewer function.</li>
</ul>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="function">
<dt id="joy.joy.repl">
<code class="descclassname">joy.joy.</code><code class="descname">repl</code><span class="sig-paren">(</span><em>stack=()</em>, <em>dictionary=None</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/joy.html#repl"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.joy.repl" title="Permalink to this definition"></a></dt>
<dd><p>Read-Evaluate-Print Loop</p>
<p>Accept input and run it on the stack, loop.</p>
</dd></dl>
<dl class="function">
<dt id="joy.joy.run">
<code class="descclassname">joy.joy.</code><code class="descname">run</code><span class="sig-paren">(</span><em>text</em>, <em>stack</em>, <em>dictionary</em>, <em>viewer=None</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/joy.html#run"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.joy.run" title="Permalink to this definition"></a></dt>
<dd><p>Return the stack resulting from running the Joy code text on the stack.</p>
</dd></dl>
</div>
</div>
</div>
</div>
</div>
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<ul>
<li><a class="reference internal" href="#">Joy Interpreter</a><ul>
<li><a class="reference internal" href="#module-joy.joy"><code class="docutils literal notranslate"><span class="pre">joy.joy</span></code></a></li>
</ul>
</li>
</ul>
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<h3>Related Topics</h3>
<ul>
<li><a href="index.html">Documentation overview</a><ul>
<li>Previous: <a href="index.html" title="previous chapter">Thun 0.1.0 Documentation</a></li>
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<div class="section" id="function-reference">
<h1>Function Reference<a class="headerlink" href="#function-reference" title="Permalink to this headline"></a></h1>
<div class="section" id="module-joy.library">
<span id="joy-library"></span><h2><code class="docutils literal notranslate"><span class="pre">joy.library</span></code><a class="headerlink" href="#module-joy.library" title="Permalink to this headline"></a></h2>
<p>This module contains the Joy function infrastructure and a library of
functions. Its main export is a Python function initialize() that
returns a dictionary of Joy functions suitable for use with the joy()
function.</p>
<dl class="function">
<dt id="joy.library.BinaryBuiltinWrapper">
<code class="descclassname">joy.library.</code><code class="descname">BinaryBuiltinWrapper</code><span class="sig-paren">(</span><em>f</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#BinaryBuiltinWrapper"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.BinaryBuiltinWrapper" title="Permalink to this definition"></a></dt>
<dd><p>Wrap functions that take two arguments and return a single result.</p>
</dd></dl>
<dl class="class">
<dt id="joy.library.DefinitionWrapper">
<em class="property">class </em><code class="descclassname">joy.library.</code><code class="descname">DefinitionWrapper</code><span class="sig-paren">(</span><em>name</em>, <em>body_text</em>, <em>doc=None</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#DefinitionWrapper"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.DefinitionWrapper" title="Permalink to this definition"></a></dt>
<dd><p>Provide implementation of defined functions, and some helper methods.</p>
<dl class="classmethod">
<dt id="joy.library.DefinitionWrapper.add_def">
<em class="property">classmethod </em><code class="descname">add_def</code><span class="sig-paren">(</span><em>definition</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#DefinitionWrapper.add_def"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.DefinitionWrapper.add_def" title="Permalink to this definition"></a></dt>
<dd><p>Add the definition to the dictionary.</p>
</dd></dl>
<dl class="classmethod">
<dt id="joy.library.DefinitionWrapper.add_definitions">
<em class="property">classmethod </em><code class="descname">add_definitions</code><span class="sig-paren">(</span><em>defs</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#DefinitionWrapper.add_definitions"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.DefinitionWrapper.add_definitions" title="Permalink to this definition"></a></dt>
<dd><p>Scan multi-line string defs for definitions and add them to the
dictionary.</p>
</dd></dl>
<dl class="classmethod">
<dt id="joy.library.DefinitionWrapper.parse_definition">
<em class="property">classmethod </em><code class="descname">parse_definition</code><span class="sig-paren">(</span><em>defi</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#DefinitionWrapper.parse_definition"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.DefinitionWrapper.parse_definition" title="Permalink to this definition"></a></dt>
<dd><p>Given some text describing a Joy function definition parse it and
return a DefinitionWrapper.</p>
</dd></dl>
</dd></dl>
<dl class="function">
<dt id="joy.library.FunctionWrapper">
<code class="descclassname">joy.library.</code><code class="descname">FunctionWrapper</code><span class="sig-paren">(</span><em>f</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#FunctionWrapper"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.FunctionWrapper" title="Permalink to this definition"></a></dt>
<dd><p>Set name attribute.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.SimpleFunctionWrapper">
<code class="descclassname">joy.library.</code><code class="descname">SimpleFunctionWrapper</code><span class="sig-paren">(</span><em>f</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#SimpleFunctionWrapper"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.SimpleFunctionWrapper" title="Permalink to this definition"></a></dt>
<dd><p>Wrap functions that take and return just a stack.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.UnaryBuiltinWrapper">
<code class="descclassname">joy.library.</code><code class="descname">UnaryBuiltinWrapper</code><span class="sig-paren">(</span><em>f</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#UnaryBuiltinWrapper"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.UnaryBuiltinWrapper" title="Permalink to this definition"></a></dt>
<dd><p>Wrap functions that take one argument and return a single result.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.add_aliases">
<code class="descclassname">joy.library.</code><code class="descname">add_aliases</code><span class="sig-paren">(</span><em>D</em>, <em>A</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#add_aliases"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.add_aliases" title="Permalink to this definition"></a></dt>
<dd><p>Given a dict and a iterable of (name, [alias, …]) pairs, create
additional entries in the dict mapping each alias to the named function
if it’s in the dict. Aliases for functions not in the dict are ignored.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.app1">
<code class="descclassname">joy.library.</code><code class="descname">app1</code><span class="sig-paren">(</span><em>S</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#app1"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.app1" title="Permalink to this definition"></a></dt>
<dd><p>Given a quoted program on TOS and anything as the second stack item run
the program and replace the two args with the first result of the
program.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">...</span> <span class="n">x</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="o">.</span> <span class="n">app1</span>
<span class="o">-----------------------------------</span>
<span class="o">...</span> <span class="p">[</span><span class="n">x</span> <span class="o">...</span><span class="p">]</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="o">.</span> <span class="n">infra</span> <span class="n">first</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.app2">
<code class="descclassname">joy.library.</code><code class="descname">app2</code><span class="sig-paren">(</span><em>S</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#app2"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.app2" title="Permalink to this definition"></a></dt>
<dd><p>Like app1 with two items.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">...</span> <span class="n">y</span> <span class="n">x</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="o">.</span> <span class="n">app2</span>
<span class="o">-----------------------------------</span>
<span class="o">...</span> <span class="p">[</span><span class="n">y</span> <span class="o">...</span><span class="p">]</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="o">.</span> <span class="n">infra</span> <span class="n">first</span>
<span class="p">[</span><span class="n">x</span> <span class="o">...</span><span class="p">]</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">infra</span> <span class="n">first</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.app3">
<code class="descclassname">joy.library.</code><code class="descname">app3</code><span class="sig-paren">(</span><em>S</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#app3"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.app3" title="Permalink to this definition"></a></dt>
<dd><p>Like app1 with three items.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">...</span> <span class="n">z</span> <span class="n">y</span> <span class="n">x</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="o">.</span> <span class="n">app3</span>
<span class="o">-----------------------------------</span>
<span class="o">...</span> <span class="p">[</span><span class="n">z</span> <span class="o">...</span><span class="p">]</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="o">.</span> <span class="n">infra</span> <span class="n">first</span>
<span class="p">[</span><span class="n">y</span> <span class="o">...</span><span class="p">]</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">infra</span> <span class="n">first</span>
<span class="p">[</span><span class="n">x</span> <span class="o">...</span><span class="p">]</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">infra</span> <span class="n">first</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.b">
<code class="descclassname">joy.library.</code><code class="descname">b</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#b"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.b" title="Permalink to this definition"></a></dt>
<dd><div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">b</span> <span class="o">==</span> <span class="p">[</span><span class="n">i</span><span class="p">]</span> <span class="n">dip</span> <span class="n">i</span>
<span class="o">...</span> <span class="p">[</span><span class="n">P</span><span class="p">]</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">b</span> <span class="o">==</span> <span class="o">...</span> <span class="p">[</span><span class="n">P</span><span class="p">]</span> <span class="n">i</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">i</span>
<span class="o">...</span> <span class="p">[</span><span class="n">P</span><span class="p">]</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">b</span> <span class="o">==</span> <span class="o">...</span> <span class="n">P</span> <span class="n">Q</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.branch">
<code class="descclassname">joy.library.</code><code class="descname">branch</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#branch"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.branch" title="Permalink to this definition"></a></dt>
<dd><p>Use a Boolean value to select one of two quoted programs to run.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">branch</span> <span class="o">==</span> <span class="n">roll</span><span class="o">&lt;</span> <span class="n">choice</span> <span class="n">i</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="kc">False</span> <span class="p">[</span><span class="n">F</span><span class="p">]</span> <span class="p">[</span><span class="n">T</span><span class="p">]</span> <span class="n">branch</span>
<span class="o">--------------------------</span>
<span class="n">F</span>
<span class="kc">True</span> <span class="p">[</span><span class="n">F</span><span class="p">]</span> <span class="p">[</span><span class="n">T</span><span class="p">]</span> <span class="n">branch</span>
<span class="o">-------------------------</span>
<span class="n">T</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.choice">
<code class="descclassname">joy.library.</code><code class="descname">choice</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#choice"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.choice" title="Permalink to this definition"></a></dt>
<dd><p>Use a Boolean value to select one of two items.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="n">A</span> <span class="n">B</span> <span class="kc">False</span> <span class="n">choice</span>
<span class="o">----------------------</span>
<span class="n">A</span>
<span class="n">A</span> <span class="n">B</span> <span class="kc">True</span> <span class="n">choice</span>
<span class="o">---------------------</span>
<span class="n">B</span>
</pre></div>
</div>
<p>Currently Python semantics are used to evaluate the “truthiness” of the
Boolean value (so empty string, zero, etc. are counted as false, etc.)</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.clear">
<code class="descclassname">joy.library.</code><code class="descname">clear</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#clear"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.clear" title="Permalink to this definition"></a></dt>
<dd><p>Clear everything from the stack.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">...</span> <span class="n">clear</span>
<span class="o">---------------</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.concat">
<code class="descclassname">joy.library.</code><code class="descname">concat</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#concat"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.concat" title="Permalink to this definition"></a></dt>
<dd><p>Concatinate the two lists on the top of the stack.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.cons">
<code class="descclassname">joy.library.</code><code class="descname">cons</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#cons"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.cons" title="Permalink to this definition"></a></dt>
<dd><p>The cons operator expects a list on top of the stack and the potential
member below. The effect is to add the potential member into the
aggregate.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.dip">
<code class="descclassname">joy.library.</code><code class="descname">dip</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#dip"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.dip" title="Permalink to this definition"></a></dt>
<dd><p>The dip combinator expects a quoted program on the stack and below it
some item, it hoists the item into the expression and runs the program
on the rest of the stack.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">...</span> <span class="n">x</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">dip</span>
<span class="o">-------------------</span>
<span class="o">...</span> <span class="n">Q</span> <span class="n">x</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.dipd">
<code class="descclassname">joy.library.</code><code class="descname">dipd</code><span class="sig-paren">(</span><em>S</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#dipd"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.dipd" title="Permalink to this definition"></a></dt>
<dd><p>Like dip but expects two items.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">...</span> <span class="n">y</span> <span class="n">x</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">dip</span>
<span class="o">---------------------</span>
<span class="o">...</span> <span class="n">Q</span> <span class="n">y</span> <span class="n">x</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.dipdd">
<code class="descclassname">joy.library.</code><code class="descname">dipdd</code><span class="sig-paren">(</span><em>S</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#dipdd"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.dipdd" title="Permalink to this definition"></a></dt>
<dd><p>Like dip but expects three items.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">...</span> <span class="n">z</span> <span class="n">y</span> <span class="n">x</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">dip</span>
<span class="o">-----------------------</span>
<span class="o">...</span> <span class="n">Q</span> <span class="n">z</span> <span class="n">y</span> <span class="n">x</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.divmod_">
<code class="descclassname">joy.library.</code><code class="descname">divmod_</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#divmod_"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.divmod_" title="Permalink to this definition"></a></dt>
<dd><p>divmod(x, y) -&gt; (quotient, remainder)</p>
<p>Return the tuple (x//y, x%y). Invariant: div*y + mod == x.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.drop">
<code class="descclassname">joy.library.</code><code class="descname">drop</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#drop"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.drop" title="Permalink to this definition"></a></dt>
<dd><div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">drop</span> <span class="o">==</span> <span class="p">[</span><span class="n">rest</span><span class="p">]</span> <span class="n">times</span>
</pre></div>
</div>
<p>Expects an integer and a quote on the stack and returns the quote with
n items removed off the top.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="p">[</span><span class="n">a</span> <span class="n">b</span> <span class="n">c</span> <span class="n">d</span><span class="p">]</span> <span class="mi">2</span> <span class="n">drop</span>
<span class="o">----------------------</span>
<span class="p">[</span><span class="n">c</span> <span class="n">d</span><span class="p">]</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.dup">
<code class="descclassname">joy.library.</code><code class="descname">dup</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#dup"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.dup" title="Permalink to this definition"></a></dt>
<dd><p>Duplicate the top item on the stack.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.dupd">
<code class="descclassname">joy.library.</code><code class="descname">dupd</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#dupd"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.dupd" title="Permalink to this definition"></a></dt>
<dd><p>Duplicate the second item on the stack.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.dupdip">
<code class="descclassname">joy.library.</code><code class="descname">dupdip</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#dupdip"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.dupdip" title="Permalink to this definition"></a></dt>
<dd><div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="n">F</span><span class="p">]</span> <span class="n">dupdip</span> <span class="o">==</span> <span class="n">dup</span> <span class="p">[</span><span class="n">F</span><span class="p">]</span> <span class="n">dip</span>
<span class="o">...</span> <span class="n">a</span> <span class="p">[</span><span class="n">F</span><span class="p">]</span> <span class="n">dupdip</span>
<span class="o">...</span> <span class="n">a</span> <span class="n">dup</span> <span class="p">[</span><span class="n">F</span><span class="p">]</span> <span class="n">dip</span>
<span class="o">...</span> <span class="n">a</span> <span class="n">a</span> <span class="p">[</span><span class="n">F</span><span class="p">]</span> <span class="n">dip</span>
<span class="o">...</span> <span class="n">a</span> <span class="n">F</span> <span class="n">a</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.first">
<code class="descclassname">joy.library.</code><code class="descname">first</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#first"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.first" title="Permalink to this definition"></a></dt>
<dd><div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">first</span> <span class="o">==</span> <span class="n">uncons</span> <span class="n">pop</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.floor">
<code class="descclassname">joy.library.</code><code class="descname">floor</code><span class="sig-paren">(</span><em>x</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#floor"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.floor" title="Permalink to this definition"></a></dt>
<dd><p>Return the floor of x as a float.
This is the largest integral value &lt;= x.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.genrec">
<code class="descclassname">joy.library.</code><code class="descname">genrec</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#genrec"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.genrec" title="Permalink to this definition"></a></dt>
<dd><p>General Recursion Combinator.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="p">[</span><span class="k">if</span><span class="p">]</span> <span class="p">[</span><span class="n">then</span><span class="p">]</span> <span class="p">[</span><span class="n">rec1</span><span class="p">]</span> <span class="p">[</span><span class="n">rec2</span><span class="p">]</span> <span class="n">genrec</span>
<span class="o">---------------------------------------------------------------------</span>
<span class="p">[</span><span class="k">if</span><span class="p">]</span> <span class="p">[</span><span class="n">then</span><span class="p">]</span> <span class="p">[</span><span class="n">rec1</span> <span class="p">[[</span><span class="k">if</span><span class="p">]</span> <span class="p">[</span><span class="n">then</span><span class="p">]</span> <span class="p">[</span><span class="n">rec1</span><span class="p">]</span> <span class="p">[</span><span class="n">rec2</span><span class="p">]</span> <span class="n">genrec</span><span class="p">]</span> <span class="n">rec2</span><span class="p">]</span> <span class="n">ifte</span>
</pre></div>
</div>
<p>From “Recursion Theory and Joy” (j05cmp.html) by Manfred von Thun:
“The genrec combinator takes four program parameters in addition to
whatever data parameters it needs. Fourth from the top is an if-part,
followed by a then-part. If the if-part yields true, then the then-part
is executed and the combinator terminates. The other two parameters are
the rec1-part and the rec2-part. If the if-part yields false, the
rec1-part is executed. Following that the four program parameters and
the combinator are again pushed onto the stack bundled up in a quoted
form. Then the rec2-part is executed, where it will find the bundled
form. Typically it will then execute the bundled form, either with i or
with app2, or some other combinator.”</p>
<p>The way to design one of these is to fix your base case [then] and the
test [if], and then treat rec1 and rec2 as an else-part “sandwiching”
a quotation of the whole function.</p>
<p>For example, given a (general recursive) function ‘F’:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">F</span> <span class="o">==</span> <span class="p">[</span><span class="n">I</span><span class="p">]</span> <span class="p">[</span><span class="n">T</span><span class="p">]</span> <span class="p">[</span><span class="n">R1</span><span class="p">]</span> <span class="p">[</span><span class="n">R2</span><span class="p">]</span> <span class="n">genrec</span>
</pre></div>
</div>
<p>If the [I] if-part fails you must derive R1 and R2 from:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">...</span> <span class="n">R1</span> <span class="p">[</span><span class="n">F</span><span class="p">]</span> <span class="n">R2</span>
</pre></div>
</div>
<p>Just set the stack arguments in front, and figure out what R1 and R2
have to do to apply the quoted [F] in the proper way. In effect, the
genrec combinator turns into an ifte combinator with a quoted copy of
the original definition in the else-part:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">F</span> <span class="o">==</span> <span class="p">[</span><span class="n">I</span><span class="p">]</span> <span class="p">[</span><span class="n">T</span><span class="p">]</span> <span class="p">[</span><span class="n">R1</span><span class="p">]</span> <span class="p">[</span><span class="n">R2</span><span class="p">]</span> <span class="n">genrec</span>
<span class="o">==</span> <span class="p">[</span><span class="n">I</span><span class="p">]</span> <span class="p">[</span><span class="n">T</span><span class="p">]</span> <span class="p">[</span><span class="n">R1</span> <span class="p">[</span><span class="n">F</span><span class="p">]</span> <span class="n">R2</span><span class="p">]</span> <span class="n">ifte</span>
</pre></div>
</div>
<p>Primitive recursive functions are those where R2 == i.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">P</span> <span class="o">==</span> <span class="p">[</span><span class="n">I</span><span class="p">]</span> <span class="p">[</span><span class="n">T</span><span class="p">]</span> <span class="p">[</span><span class="n">R</span><span class="p">]</span> <span class="n">primrec</span>
<span class="o">==</span> <span class="p">[</span><span class="n">I</span><span class="p">]</span> <span class="p">[</span><span class="n">T</span><span class="p">]</span> <span class="p">[</span><span class="n">R</span> <span class="p">[</span><span class="n">P</span><span class="p">]</span> <span class="n">i</span><span class="p">]</span> <span class="n">ifte</span>
<span class="o">==</span> <span class="p">[</span><span class="n">I</span><span class="p">]</span> <span class="p">[</span><span class="n">T</span><span class="p">]</span> <span class="p">[</span><span class="n">R</span> <span class="n">P</span><span class="p">]</span> <span class="n">ifte</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.getitem">
<code class="descclassname">joy.library.</code><code class="descname">getitem</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#getitem"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.getitem" title="Permalink to this definition"></a></dt>
<dd><div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">getitem</span> <span class="o">==</span> <span class="n">drop</span> <span class="n">first</span>
</pre></div>
</div>
<p>Expects an integer and a quote on the stack and returns the item at the
nth position in the quote counting from 0.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="p">[</span><span class="n">a</span> <span class="n">b</span> <span class="n">c</span> <span class="n">d</span><span class="p">]</span> <span class="mi">0</span> <span class="n">getitem</span>
<span class="o">-------------------------</span>
<span class="n">a</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.help_">
<code class="descclassname">joy.library.</code><code class="descname">help_</code><span class="sig-paren">(</span><em>S</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#help_"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.help_" title="Permalink to this definition"></a></dt>
<dd><p>Accepts a quoted symbol on the top of the stack and prints its docs.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.i">
<code class="descclassname">joy.library.</code><code class="descname">i</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#i"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.i" title="Permalink to this definition"></a></dt>
<dd><p>The i combinator expects a quoted program on the stack and unpacks it
onto the pending expression for evaluation.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">i</span>
<span class="o">-----------</span>
<span class="n">Q</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.id_">
<code class="descclassname">joy.library.</code><code class="descname">id_</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#id_"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.id_" title="Permalink to this definition"></a></dt>
<dd><p>The identity function.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.ifte">
<code class="descclassname">joy.library.</code><code class="descname">ifte</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#ifte"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.ifte" title="Permalink to this definition"></a></dt>
<dd><p>If-Then-Else Combinator</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">...</span> <span class="p">[</span><span class="k">if</span><span class="p">]</span> <span class="p">[</span><span class="n">then</span><span class="p">]</span> <span class="p">[</span><span class="k">else</span><span class="p">]</span> <span class="n">ifte</span>
<span class="o">---------------------------------------------------</span>
<span class="o">...</span> <span class="p">[[</span><span class="k">else</span><span class="p">]</span> <span class="p">[</span><span class="n">then</span><span class="p">]]</span> <span class="p">[</span><span class="o">...</span><span class="p">]</span> <span class="p">[</span><span class="k">if</span><span class="p">]</span> <span class="n">infra</span> <span class="n">select</span> <span class="n">i</span>
<span class="o">...</span> <span class="p">[</span><span class="k">if</span><span class="p">]</span> <span class="p">[</span><span class="n">then</span><span class="p">]</span> <span class="p">[</span><span class="k">else</span><span class="p">]</span> <span class="n">ifte</span>
<span class="o">-------------------------------------------------------</span>
<span class="o">...</span> <span class="p">[</span><span class="k">else</span><span class="p">]</span> <span class="p">[</span><span class="n">then</span><span class="p">]</span> <span class="p">[</span><span class="o">...</span><span class="p">]</span> <span class="p">[</span><span class="k">if</span><span class="p">]</span> <span class="n">infra</span> <span class="n">first</span> <span class="n">choice</span> <span class="n">i</span>
</pre></div>
</div>
<p>Has the effect of grabbing a copy of the stack on which to run the
if-part using infra.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.infra">
<code class="descclassname">joy.library.</code><code class="descname">infra</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#infra"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.infra" title="Permalink to this definition"></a></dt>
<dd><p>Accept a quoted program and a list on the stack and run the program
with the list as its stack.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">...</span> <span class="p">[</span><span class="n">a</span> <span class="n">b</span> <span class="n">c</span><span class="p">]</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="o">.</span> <span class="n">infra</span>
<span class="o">-----------------------------</span>
<span class="n">c</span> <span class="n">b</span> <span class="n">a</span> <span class="o">.</span> <span class="n">Q</span> <span class="p">[</span><span class="o">...</span><span class="p">]</span> <span class="n">swaack</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.initialize">
<code class="descclassname">joy.library.</code><code class="descname">initialize</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#initialize"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.initialize" title="Permalink to this definition"></a></dt>
<dd><p>Return a dictionary of Joy functions for use with joy().</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.inscribe">
<code class="descclassname">joy.library.</code><code class="descname">inscribe</code><span class="sig-paren">(</span><em>function</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#inscribe"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.inscribe" title="Permalink to this definition"></a></dt>
<dd><p>A decorator to inscribe functions into the default dictionary.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.loop">
<code class="descclassname">joy.library.</code><code class="descname">loop</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#loop"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.loop" title="Permalink to this definition"></a></dt>
<dd><p>Basic loop combinator.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">...</span> <span class="kc">True</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">loop</span>
<span class="o">-----------------------</span>
<span class="o">...</span> <span class="n">Q</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">loop</span>
<span class="o">...</span> <span class="kc">False</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">loop</span>
<span class="o">------------------------</span>
<span class="o">...</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.map_">
<code class="descclassname">joy.library.</code><code class="descname">map_</code><span class="sig-paren">(</span><em>S</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#map_"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.map_" title="Permalink to this definition"></a></dt>
<dd><p>Run the quoted program on TOS on the items in the list under it, push a
new list with the results (in place of the program and original list.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.max_">
<code class="descclassname">joy.library.</code><code class="descname">max_</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#max_"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.max_" title="Permalink to this definition"></a></dt>
<dd><p>Given a list find the maximum.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.min_">
<code class="descclassname">joy.library.</code><code class="descname">min_</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#min_"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.min_" title="Permalink to this definition"></a></dt>
<dd><p>Given a list find the minimum.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.over">
<code class="descclassname">joy.library.</code><code class="descname">over</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#over"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.over" title="Permalink to this definition"></a></dt>
<dd><p>Copy the second item down on the stack to the top of the stack.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="n">a</span> <span class="n">b</span> <span class="n">over</span>
<span class="o">--------------</span>
<span class="n">a</span> <span class="n">b</span> <span class="n">a</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.parse">
<code class="descclassname">joy.library.</code><code class="descname">parse</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#parse"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.parse" title="Permalink to this definition"></a></dt>
<dd><p>Parse the string on the stack to a Joy expression.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.pm">
<code class="descclassname">joy.library.</code><code class="descname">pm</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#pm"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.pm" title="Permalink to this definition"></a></dt>
<dd><p>Plus or minus</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="n">a</span> <span class="n">b</span> <span class="n">pm</span>
<span class="o">-------------</span>
<span class="n">a</span><span class="o">+</span><span class="n">b</span> <span class="n">a</span><span class="o">-</span><span class="n">b</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.pop">
<code class="descclassname">joy.library.</code><code class="descname">pop</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#pop"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.pop" title="Permalink to this definition"></a></dt>
<dd><p>Pop and discard the top item from the stack.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.popd">
<code class="descclassname">joy.library.</code><code class="descname">popd</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#popd"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.popd" title="Permalink to this definition"></a></dt>
<dd><p>Pop and discard the second item from the stack.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.popdd">
<code class="descclassname">joy.library.</code><code class="descname">popdd</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#popdd"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.popdd" title="Permalink to this definition"></a></dt>
<dd><p>Pop and discard the third item from the stack.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.popop">
<code class="descclassname">joy.library.</code><code class="descname">popop</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#popop"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.popop" title="Permalink to this definition"></a></dt>
<dd><p>Pop and discard the first and second items from the stack.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.pred">
<code class="descclassname">joy.library.</code><code class="descname">pred</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#pred"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.pred" title="Permalink to this definition"></a></dt>
<dd><p>Decrement TOS.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.remove">
<code class="descclassname">joy.library.</code><code class="descname">remove</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#remove"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.remove" title="Permalink to this definition"></a></dt>
<dd><p>Expects an item on the stack and a quote under it and removes that item
from the the quote. The item is only removed once.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="p">[</span><span class="mi">1</span> <span class="mi">2</span> <span class="mi">3</span> <span class="mi">1</span><span class="p">]</span> <span class="mi">1</span> <span class="n">remove</span>
<span class="o">------------------------</span>
<span class="p">[</span><span class="mi">2</span> <span class="mi">3</span> <span class="mi">1</span><span class="p">]</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.rest">
<code class="descclassname">joy.library.</code><code class="descname">rest</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#rest"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.rest" title="Permalink to this definition"></a></dt>
<dd><div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">rest</span> <span class="o">==</span> <span class="n">uncons</span> <span class="n">popd</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.reverse">
<code class="descclassname">joy.library.</code><code class="descname">reverse</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#reverse"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.reverse" title="Permalink to this definition"></a></dt>
<dd><p>Reverse the list on the top of the stack.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">reverse</span> <span class="o">==</span> <span class="p">[]</span> <span class="n">swap</span> <span class="n">shunt</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.rolldown">
<code class="descclassname">joy.library.</code><code class="descname">rolldown</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#rolldown"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.rolldown" title="Permalink to this definition"></a></dt>
<dd><div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="n">a</span> <span class="n">b</span> <span class="n">c</span>
<span class="o">-----------</span>
<span class="n">c</span> <span class="n">a</span> <span class="n">b</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.rollup">
<code class="descclassname">joy.library.</code><code class="descname">rollup</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#rollup"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.rollup" title="Permalink to this definition"></a></dt>
<dd><div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="n">a</span> <span class="n">b</span> <span class="n">c</span>
<span class="o">-----------</span>
<span class="n">b</span> <span class="n">c</span> <span class="n">a</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.select">
<code class="descclassname">joy.library.</code><code class="descname">select</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#select"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.select" title="Permalink to this definition"></a></dt>
<dd><p>Use a Boolean value to select one of two items from a sequence.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="p">[</span><span class="n">A</span> <span class="n">B</span><span class="p">]</span> <span class="kc">False</span> <span class="n">select</span>
<span class="o">------------------------</span>
<span class="n">A</span>
<span class="p">[</span><span class="n">A</span> <span class="n">B</span><span class="p">]</span> <span class="kc">True</span> <span class="n">select</span>
<span class="o">-----------------------</span>
<span class="n">B</span>
</pre></div>
</div>
<p>The sequence can contain more than two items but not fewer.
Currently Python semantics are used to evaluate the “truthiness” of the
Boolean value (so empty string, zero, etc. are counted as false, etc.)</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.sharing">
<code class="descclassname">joy.library.</code><code class="descname">sharing</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#sharing"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.sharing" title="Permalink to this definition"></a></dt>
<dd><p>Print redistribution information.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.shunt">
<code class="descclassname">joy.library.</code><code class="descname">shunt</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#shunt"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.shunt" title="Permalink to this definition"></a></dt>
<dd><p>Like concat but reverses the top list into the second.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">shunt</span> <span class="o">==</span> <span class="p">[</span><span class="n">swons</span><span class="p">]</span> <span class="n">step</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.sort_">
<code class="descclassname">joy.library.</code><code class="descname">sort_</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#sort_"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.sort_" title="Permalink to this definition"></a></dt>
<dd><p>Given a list return it sorted.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.sqrt">
<code class="descclassname">joy.library.</code><code class="descname">sqrt</code><span class="sig-paren">(</span><em>a</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#sqrt"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.sqrt" title="Permalink to this definition"></a></dt>
<dd><p>Return the square root of the number a.
Negative numbers return complex roots.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.stack_">
<code class="descclassname">joy.library.</code><code class="descname">stack_</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#stack_"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.stack_" title="Permalink to this definition"></a></dt>
<dd><p>The stack operator pushes onto the stack a list containing all the
elements of the stack.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.step">
<code class="descclassname">joy.library.</code><code class="descname">step</code><span class="sig-paren">(</span><em>S</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#step"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.step" title="Permalink to this definition"></a></dt>
<dd><p>Run a quoted program on each item in a sequence.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">...</span> <span class="p">[]</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="o">.</span> <span class="n">step</span>
<span class="o">-----------------------</span>
<span class="o">...</span> <span class="o">.</span>
<span class="o">...</span> <span class="p">[</span><span class="n">a</span><span class="p">]</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="o">.</span> <span class="n">step</span>
<span class="o">------------------------</span>
<span class="o">...</span> <span class="n">a</span> <span class="o">.</span> <span class="n">Q</span>
<span class="o">...</span> <span class="p">[</span><span class="n">a</span> <span class="n">b</span> <span class="n">c</span><span class="p">]</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="o">.</span> <span class="n">step</span>
<span class="o">----------------------------------------</span>
<span class="o">...</span> <span class="n">a</span> <span class="o">.</span> <span class="n">Q</span> <span class="p">[</span><span class="n">b</span> <span class="n">c</span><span class="p">]</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">step</span>
</pre></div>
</div>
<p>The step combinator executes the quotation on each member of the list
on top of the stack.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.succ">
<code class="descclassname">joy.library.</code><code class="descname">succ</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#succ"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.succ" title="Permalink to this definition"></a></dt>
<dd><p>Increment TOS.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.sum_">
<code class="descclassname">joy.library.</code><code class="descname">sum_</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#sum_"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.sum_" title="Permalink to this definition"></a></dt>
<dd><p>Given a quoted sequence of numbers return the sum.</p>
<p>sum == 0 swap [+] step</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.swaack">
<code class="descclassname">joy.library.</code><code class="descname">swaack</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#swaack"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.swaack" title="Permalink to this definition"></a></dt>
<dd><p>swap stack</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.swap">
<code class="descclassname">joy.library.</code><code class="descname">swap</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#swap"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.swap" title="Permalink to this definition"></a></dt>
<dd><p>Swap the top two items on stack.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.take">
<code class="descclassname">joy.library.</code><code class="descname">take</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#take"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.take" title="Permalink to this definition"></a></dt>
<dd><p>Expects an integer and a quote on the stack and returns the quote with
just the top n items in reverse order (because that’s easier and you can
use reverse if needed.)</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="p">[</span><span class="n">a</span> <span class="n">b</span> <span class="n">c</span> <span class="n">d</span><span class="p">]</span> <span class="mi">2</span> <span class="n">take</span>
<span class="o">----------------------</span>
<span class="p">[</span><span class="n">b</span> <span class="n">a</span><span class="p">]</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.times">
<code class="descclassname">joy.library.</code><code class="descname">times</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#times"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.times" title="Permalink to this definition"></a></dt>
<dd><p>times == [– dip] cons [swap] infra [0 &gt;] swap while pop</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">...</span> <span class="n">n</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="o">.</span> <span class="n">times</span>
<span class="o">---------------------</span> <span class="n">w</span><span class="o">/</span> <span class="n">n</span> <span class="o">&lt;=</span> <span class="mi">0</span>
<span class="o">...</span> <span class="o">.</span>
<span class="o">...</span> <span class="mi">1</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="o">.</span> <span class="n">times</span>
<span class="o">---------------------------------</span>
<span class="o">...</span> <span class="o">.</span> <span class="n">Q</span>
<span class="o">...</span> <span class="n">n</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="o">.</span> <span class="n">times</span>
<span class="o">---------------------------------</span> <span class="n">w</span><span class="o">/</span> <span class="n">n</span> <span class="o">&gt;</span> <span class="mi">1</span>
<span class="o">...</span> <span class="o">.</span> <span class="n">Q</span> <span class="p">(</span><span class="n">n</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">times</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.tuck">
<code class="descclassname">joy.library.</code><code class="descname">tuck</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#tuck"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.tuck" title="Permalink to this definition"></a></dt>
<dd><p>Copy the item at TOS under the second item of the stack.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="n">a</span> <span class="n">b</span> <span class="n">tuck</span>
<span class="o">--------------</span>
<span class="n">b</span> <span class="n">a</span> <span class="n">b</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.uncons">
<code class="descclassname">joy.library.</code><code class="descname">uncons</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#uncons"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.uncons" title="Permalink to this definition"></a></dt>
<dd><p>Inverse of cons, removes an item from the top of the list on the stack
and places it under the remaining list.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.unique">
<code class="descclassname">joy.library.</code><code class="descname">unique</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#unique"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.unique" title="Permalink to this definition"></a></dt>
<dd><p>Given a list remove duplicate items.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.unstack">
<code class="descclassname">joy.library.</code><code class="descname">unstack</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#unstack"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.unstack" title="Permalink to this definition"></a></dt>
<dd><p>The unstack operator expects a list on top of the stack and makes that
the stack discarding the rest of the stack.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.void">
<code class="descclassname">joy.library.</code><code class="descname">void</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#void"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.void" title="Permalink to this definition"></a></dt>
<dd><p>True if the form on TOS is void otherwise False.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.warranty">
<code class="descclassname">joy.library.</code><code class="descname">warranty</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#warranty"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.warranty" title="Permalink to this definition"></a></dt>
<dd><p>Print warranty information.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.words">
<code class="descclassname">joy.library.</code><code class="descname">words</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#words"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.words" title="Permalink to this definition"></a></dt>
<dd><p>Print all the words in alphabetical order.</p>
</dd></dl>
<dl class="function">
<dt id="joy.library.x">
<code class="descclassname">joy.library.</code><code class="descname">x</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#x"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.x" title="Permalink to this definition"></a></dt>
<dd><div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">x</span> <span class="o">==</span> <span class="n">dup</span> <span class="n">i</span>
<span class="o">...</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">x</span> <span class="o">=</span> <span class="o">...</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">dup</span> <span class="n">i</span>
<span class="o">...</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">x</span> <span class="o">=</span> <span class="o">...</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">i</span>
<span class="o">...</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">x</span> <span class="o">=</span> <span class="o">...</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">Q</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.library.zip_">
<code class="descclassname">joy.library.</code><code class="descname">zip_</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em>, <em>dictionary</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/library.html#zip_"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.library.zip_" title="Permalink to this definition"></a></dt>
<dd><p>Replace the two lists on the top of the stack with a list of the pairs
from each list. The smallest list sets the length of the result list.</p>
</dd></dl>
</div>
</div>
</div>
</div>
</div>
<div class="sphinxsidebar" role="navigation" aria-label="main navigation">
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<h3><a href="index.html">Table Of Contents</a></h3>
<ul>
<li><a class="reference internal" href="#">Function Reference</a><ul>
<li><a class="reference internal" href="#module-joy.library"><code class="docutils literal notranslate"><span class="pre">joy.library</span></code></a></li>
</ul>
</li>
</ul>
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<h3>Related Topics</h3>
<ul>
<li><a href="index.html">Documentation overview</a><ul>
<li>Previous: <a href="pretty.html" title="previous chapter">Tracing Joy Execution</a></li>
<li>Next: <a href="lib.html" title="next chapter">Examples (and some documentation) for the Words in the Library</a></li>
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<div class="section" id="parsing-text-into-joy-expressions">
<h1>Parsing Text into Joy Expressions<a class="headerlink" href="#parsing-text-into-joy-expressions" title="Permalink to this headline"></a></h1>
<p>TODO: example…</p>
<div class="section" id="module-joy.parser">
<span id="joy-parser"></span><h2><code class="docutils literal notranslate"><span class="pre">joy.parser</span></code><a class="headerlink" href="#module-joy.parser" title="Permalink to this headline"></a></h2>
<p>This module exports a single function for converting text to a joy
expression as well as a single Symbol class and a single Exception type.</p>
<p>The Symbol string class is used by the interpreter to recognize literals
by the fact that they are not Symbol objects.</p>
<p>A crude grammar:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">joy</span> <span class="o">=</span> <span class="n">term</span><span class="o">*</span>
<span class="n">term</span> <span class="o">=</span> <span class="nb">int</span> <span class="o">|</span> <span class="nb">float</span> <span class="o">|</span> <span class="n">string</span> <span class="o">|</span> <span class="s1">&#39;[&#39;</span> <span class="n">joy</span> <span class="s1">&#39;]&#39;</span> <span class="o">|</span> <span class="n">function</span>
</pre></div>
</div>
<p>A Joy expression is a sequence of zero or more terms</p>
<dl class="exception">
<dt id="joy.parser.ParseError">
<em class="property">exception </em><code class="descclassname">joy.parser.</code><code class="descname">ParseError</code><a class="reference internal" href="_modules/joy/parser.html#ParseError"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.parser.ParseError" title="Permalink to this definition"></a></dt>
<dd><p>Raised when there is a error while parsing text.</p>
</dd></dl>
<dl class="class">
<dt id="joy.parser.Symbol">
<em class="property">class </em><code class="descclassname">joy.parser.</code><code class="descname">Symbol</code><a class="reference internal" href="_modules/joy/parser.html#Symbol"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.parser.Symbol" title="Permalink to this definition"></a></dt>
<dd><p>A string class that represents Joy function names.</p>
</dd></dl>
<dl class="function">
<dt id="joy.parser.text_to_expression">
<code class="descclassname">joy.parser.</code><code class="descname">text_to_expression</code><span class="sig-paren">(</span><em>text</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/parser.html#text_to_expression"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.parser.text_to_expression" title="Permalink to this definition"></a></dt>
<dd><p>Convert a string to a Joy expression.</p>
<p>When supplied with a string this function returns a Python datastructure
that represents the Joy datastructure described by the text expression.
Any unbalanced square brackets will raise a ParseError.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>text</strong> (<em>str</em>) – Text to convert.</td>
</tr>
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">quote</td>
</tr>
<tr class="field-odd field"><th class="field-name">Raises:</th><td class="field-body"><a class="reference internal" href="#joy.parser.ParseError" title="joy.parser.ParseError"><strong>ParseError</strong></a> – if the parse fails.</td>
</tr>
</tbody>
</table>
</dd></dl>
</div>
<div class="section" id="parser-internals">
<h2>Parser Internals<a class="headerlink" href="#parser-internals" title="Permalink to this headline"></a></h2>
<p>TODO: Document things like the regular expressions used for tokenizing, and the re.Scanner, etc…</p>
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<li><a class="reference internal" href="#">Parsing Text into Joy Expressions</a><ul>
<li><a class="reference internal" href="#module-joy.parser"><code class="docutils literal notranslate"><span class="pre">joy.parser</span></code></a></li>
<li><a class="reference internal" href="#parser-internals">Parser Internals</a></li>
</ul>
</li>
</ul>
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<h3>Related Topics</h3>
<ul>
<li><a href="index.html">Documentation overview</a><ul>
<li>Previous: <a href="stack.html" title="previous chapter">Stack or Quote or Sequence or List…</a></li>
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<h1>Tracing Joy Execution<a class="headerlink" href="#tracing-joy-execution" title="Permalink to this headline"></a></h1>
<div class="section" id="module-joy.utils.pretty_print">
<span id="joy-utils-pretty-print"></span><h2><code class="docutils literal notranslate"><span class="pre">joy.utils.pretty_print</span></code><a class="headerlink" href="#module-joy.utils.pretty_print" title="Permalink to this headline"></a></h2>
<p>Pretty printing support.</p>
<dl class="class">
<dt id="joy.utils.pretty_print.TracePrinter">
<em class="property">class </em><code class="descclassname">joy.utils.pretty_print.</code><code class="descname">TracePrinter</code><a class="reference internal" href="_modules/joy/utils/pretty_print.html#TracePrinter"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.utils.pretty_print.TracePrinter" title="Permalink to this definition"></a></dt>
<dd><p>This is what does the formatting, e.g.:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>Joy? 23 18 * 99 +
. 23 18 mul 99 add
23 . 18 mul 99 add
23 18 . mul 99 add
414 . 99 add
414 99 . add
513 .
</pre></div>
</div>
<dl class="method">
<dt id="joy.utils.pretty_print.TracePrinter.viewer">
<code class="descname">viewer</code><span class="sig-paren">(</span><em>stack</em>, <em>expression</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/utils/pretty_print.html#TracePrinter.viewer"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.utils.pretty_print.TracePrinter.viewer" title="Permalink to this definition"></a></dt>
<dd><p>Pass this method as the viewer to joy() function.</p>
</dd></dl>
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<div class="section" id="stack-or-quote-or-sequence-or-list">
<h1>Stack or Quote or Sequence or List…<a class="headerlink" href="#stack-or-quote-or-sequence-or-list" title="Permalink to this headline"></a></h1>
<div class="section" id="module-joy.utils.stack">
<span id="joy-utils-stack"></span><h2><code class="docutils literal notranslate"><span class="pre">joy.utils.stack</span></code><a class="headerlink" href="#module-joy.utils.stack" title="Permalink to this headline"></a></h2>
<p>When talking about Joy we use the terms “stack”, “list”, “sequence”,
“quote” and others to mean the same thing: a simple linear datatype that
permits certain operations such as iterating and pushing and popping
values from (at least) one end.</p>
<p>We use the <a class="reference external" href="https://en.wikipedia.org/wiki/Cons#Lists">cons list</a>, a venerable two-tuple recursive sequence datastructure, where the
empty tuple <code class="docutils literal notranslate"><span class="pre">()</span></code> is the empty stack and <code class="docutils literal notranslate"><span class="pre">(head,</span> <span class="pre">rest)</span></code> gives the recursive
form of a stack with one or more items on it:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">stack</span> <span class="p">:</span><span class="o">=</span> <span class="p">()</span> <span class="o">|</span> <span class="p">(</span><span class="n">item</span><span class="p">,</span> <span class="n">stack</span><span class="p">)</span>
</pre></div>
</div>
<p>Putting some numbers onto a stack:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">()</span>
<span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="p">())</span>
<span class="p">(</span><span class="mi">2</span><span class="p">,</span> <span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="p">()))</span>
<span class="p">(</span><span class="mi">3</span><span class="p">,</span> <span class="p">(</span><span class="mi">2</span><span class="p">,</span> <span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="p">())))</span>
<span class="o">...</span>
</pre></div>
</div>
<p>Python has very nice “tuple packing and unpacking” in its syntax which
means we can directly “unpack” the expected arguments to a Joy function.</p>
<p>For example:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="k">def</span> <span class="nf">dup</span><span class="p">((</span><span class="n">head</span><span class="p">,</span> <span class="n">tail</span><span class="p">)):</span>
<span class="k">return</span> <span class="n">head</span><span class="p">,</span> <span class="p">(</span><span class="n">head</span><span class="p">,</span> <span class="n">tail</span><span class="p">)</span>
</pre></div>
</div>
<p>We replace the argument “stack” by the expected structure of the stack,
in this case “(head, tail)”, and Python takes care of unpacking the
incoming tuple and assigning values to the names. (Note that Python
syntax doesn’t require parentheses around tuples used in expressions
where they would be redundant.)</p>
<dl class="function">
<dt id="joy.utils.stack.expression_to_string">
<code class="descclassname">joy.utils.stack.</code><code class="descname">expression_to_string</code><span class="sig-paren">(</span><em>expression</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/utils/stack.html#expression_to_string"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.utils.stack.expression_to_string" title="Permalink to this definition"></a></dt>
<dd><p>Return a “pretty print” string for a expression.</p>
<p>The items are written left-to-right:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">(</span><span class="n">top</span><span class="p">,</span> <span class="p">(</span><span class="n">second</span><span class="p">,</span> <span class="o">...</span><span class="p">))</span> <span class="o">-&gt;</span> <span class="s1">&#39;top second ...&#39;</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.utils.stack.iter_stack">
<code class="descclassname">joy.utils.stack.</code><code class="descname">iter_stack</code><span class="sig-paren">(</span><em>stack</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/utils/stack.html#iter_stack"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.utils.stack.iter_stack" title="Permalink to this definition"></a></dt>
<dd><p>Iterate through the items on the stack.</p>
</dd></dl>
<dl class="function">
<dt id="joy.utils.stack.list_to_stack">
<code class="descclassname">joy.utils.stack.</code><code class="descname">list_to_stack</code><span class="sig-paren">(</span><em>el</em>, <em>stack=()</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/utils/stack.html#list_to_stack"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.utils.stack.list_to_stack" title="Permalink to this definition"></a></dt>
<dd><p>Convert a Python list (or other sequence) to a Joy stack:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">]</span> <span class="o">-&gt;</span> <span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="p">(</span><span class="mi">2</span><span class="p">,</span> <span class="p">(</span><span class="mi">3</span><span class="p">,</span> <span class="p">())))</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="joy.utils.stack.pick">
<code class="descclassname">joy.utils.stack.</code><code class="descname">pick</code><span class="sig-paren">(</span><em>s</em>, <em>n</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/utils/stack.html#pick"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.utils.stack.pick" title="Permalink to this definition"></a></dt>
<dd><p>Find the nth item on the stack. (Pick with zero is the same as “dup”.)</p>
</dd></dl>
<dl class="function">
<dt id="joy.utils.stack.pushback">
<code class="descclassname">joy.utils.stack.</code><code class="descname">pushback</code><span class="sig-paren">(</span><em>quote</em>, <em>expression</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/utils/stack.html#pushback"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.utils.stack.pushback" title="Permalink to this definition"></a></dt>
<dd><p>Concatinate quote onto expression.</p>
<p>In joy [1 2] [3 4] would become [1 2 3 4].</p>
</dd></dl>
<dl class="function">
<dt id="joy.utils.stack.stack_to_string">
<code class="descclassname">joy.utils.stack.</code><code class="descname">stack_to_string</code><span class="sig-paren">(</span><em>stack</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/joy/utils/stack.html#stack_to_string"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#joy.utils.stack.stack_to_string" title="Permalink to this definition"></a></dt>
<dd><p>Return a “pretty print” string for a stack.</p>
<p>The items are written right-to-left:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">(</span><span class="n">top</span><span class="p">,</span> <span class="p">(</span><span class="n">second</span><span class="p">,</span> <span class="o">...</span><span class="p">))</span> <span class="o">-&gt;</span> <span class="s1">&#39;... second top&#39;</span>
</pre></div>
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