[pypy-svn] r80399 - in pypy/extradoc/talk/stanford-ee380-2011: . ui ui/default
arigo at codespeak.net
arigo at codespeak.net
Mon Feb 28 00:34:17 CET 2011
Author: arigo
Date: Mon Feb 28 00:34:15 2011
New Revision: 80399
Added:
pypy/extradoc/talk/stanford-ee380-2011/speed.png (contents, props changed)
pypy/extradoc/talk/stanford-ee380-2011/talk.txt
pypy/extradoc/talk/stanford-ee380-2011/ui/
pypy/extradoc/talk/stanford-ee380-2011/ui/default/
pypy/extradoc/talk/stanford-ee380-2011/ui/default/blank.gif (contents, props changed)
pypy/extradoc/talk/stanford-ee380-2011/ui/default/framing.css
pypy/extradoc/talk/stanford-ee380-2011/ui/default/iepngfix.htc
pypy/extradoc/talk/stanford-ee380-2011/ui/default/opera.css
pypy/extradoc/talk/stanford-ee380-2011/ui/default/outline.css
pypy/extradoc/talk/stanford-ee380-2011/ui/default/pretty.css
pypy/extradoc/talk/stanford-ee380-2011/ui/default/print.css
pypy/extradoc/talk/stanford-ee380-2011/ui/default/s5-core.css
pypy/extradoc/talk/stanford-ee380-2011/ui/default/slides.css
pypy/extradoc/talk/stanford-ee380-2011/ui/default/slides.js
pypy/extradoc/talk/stanford-ee380-2011/ui/py-web.png (contents, props changed)
pypy/extradoc/talk/stanford-ee380-2011/ui/py.css
Log:
First part of the talk. Draft.
Added: pypy/extradoc/talk/stanford-ee380-2011/speed.png
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Added: pypy/extradoc/talk/stanford-ee380-2011/talk.txt
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--- (empty file)
+++ pypy/extradoc/talk/stanford-ee380-2011/talk.txt Mon Feb 28 00:34:15 2011
@@ -0,0 +1,421 @@
+.. include:: <s5defs.txt>
+
+=========================================================
+Python in Python: the PyPy system
+=========================================================
+
+
+.. admonition:: Armin Rigo
+
+ - *Heinrich-Heine Universität, Germany*
+ - *Open End AB, Sweden*
+
+ March 2011
+
+
+
+
+What is Python
+---------------------------------------------------------
+
+
+What is Python
+---------------------
+
+::
+
+ class Foo(object):
+
+ def __init__(self, value):
+ self.value = value
+
+ def double(self):
+ return Foo(self.value * 2)
+
+ print Foo(42).double().value
+ print Foo("hello").double().value
+
+
+In two words
+------------
+
+* Strongly, trivially, dynamically typed language
+
+* Ints, floats, longs, string, unicode,
+ lists, tuples, dicts, iterators,
+ functions, classes...
+
+
+Python likes its dictionaries
+-----------------------------
+
+::
+
+ d = {}
+ for i in [1, 2, 3, 4]:
+ d[i] = i*i
+ print d
+
+* in this example, we get ``{1:1, 2:4, 3:9, 4:16}``
+
+
+Python is not Java
+------------------
+
+::
+
+ for name in ["add", "sub", "mul"]:
+ def f(x, y):
+ ...
+ globals()[name] = f
+
+
+Python is complicated
+---------------------
+
+How ``a + b`` works (simplified!):
+
+* look up the method __add__ on the type of a
+
+* if there is one, call it
+
+* if it returns NotImplemented, or if there is none,
+ look up the method __radd__ on the type of b
+
+* if there is one, call it
+
+* if there is none, or we get NotImplemented again,
+ raise an exception TypeError
+
+
+Python is a mess
+----------------
+
+How ``a.attr`` or ``a.method()`` works:
+
+* ...
+
+* no way to write it down in just one slide
+
+
+What this talk is about
+-----------------------
+
+* The PyPy project: a framework in which to write interpreters for
+ this kind of language
+
+* "Python in Python" -- roughly
+
+* From the user's point of view (i.e. the programmer in Python),
+ PyPy is very similar to CPython.
+
+
+
+
+CPython and PyPy
+--------------------------------------------------------------------
+
+
+CPython and PyPy
+----------------
+
+* Two implementations
+
+* Two interpreters
+
+* CPython is written in C, PyPy is written in Python
+
+* PyPy tries to be equivalent to CPython
+
+
+...and Jython and IronPython
+----------------------------
+
+* Jython: Python for the Java VM
+
+* IronPython: Python for .NET
+
+* Both try to integrate well with their VM
+
+
+What is PyPy
+------------
+
+* A project started in 2003
+
+* An Open Source effort of volunteers
+
+* With some funding support: 2 years from the European Union (2005-2007),
+ and now from Germany and Sweden (2010-2011).
+
+
+What is PyPy
+------------
+
+* Test-driven development
+
+* Now contains about 200 KLoC, and 150 KLoc of tests
+
+
+What is the point of PyPy?
+--------------------------
+
+* CPython is older, it's the "official" version
+
+* PyPy is just a replacement, so why?
+
+* Moreover PyPy is not quite complete (e.g. C extension
+ modules are only partially supported)
+
+
+Speed
+-----
+
+* First answer: PyPy is faster, and may use less memory
+
+* ...or at least, it is "often" the case
+
+
+Speed
+-----
+
+.. image:: speed.png
+
+http://speed.pypy.org/
+
+
+And (optionally) extra features
+-------------------------------
+
+* "Stackless"
+
+* Non-Python
+
+* and many smaller experiments
+
+* it is a better experimentation platform than CPython
+
+
+Multi-threading
+---------------
+
+* Bad support on CPython (GIL)
+
+* PyPy has no answer to this question (there is also a GIL)
+
+
+
+
+Architecture
+------------------------------------------------------------------------
+
+
+Architecture
+------------
+
+PyPy has two parts:
+
+* A Python interpreter, written in *RPython*
+
+* A compilation toolchain -- the "translator" -- that translates
+ RPython code into C code (mainly)
+
+
+The translation toolchain
+-------------------------
+
+* Takes a program written in RPython, a custom subset of Python
+
+* Outputs the "same" program written in C
+
+* See demo
+
+
+PyPy's Python interpreter
+-------------------------
+
+* A priori similar to CPython, but written in RPython.
+
+* See demo (py.py)
+
+
+RPython is still mostly Python
+------------------------------
+
+* Completely valid Python (can be tested directly)
+
+* Can use lists, dicts, tuples, classes and instances, and so on
+
+* Contains no garbage collection detail (Py_INCREF/Py_DECREF in CPython)
+
+* Really a subset of Python: roughly "how a Java programmer writes his
+ first Python program"
+
+* ...well, plus tons of tricks ``:-)``
+
+
+RPython meta-programming
+------------------------
+
+* RPython is actually only a restriction on the code after being imported,
+ so we can build up everything in (normal) full Python::
+
+ for name in ["add", "sub", "mul"]:
+ def f(x, y):
+ ...
+ globals()[name] = f
+
+* here, the code in ``f()`` is RPython, but the loop around it is not.
+
+
+A bit of history
+----------------
+
+* Squeak and Scheme48 are also interpreters written in themselves
+
+* Or more precisely, like PyPy, a subset of themselves
+
+* In PyPy, the RPython subset is at a higher level
+
+* General rule: *every aspect that is independent from the high-level
+ description of the interpreter is left out of RPython*
+
+
+
+
+Architecture: the interpreter
+--------------------------------------------------------------------------
+
+
+Overview of the interpreter
+---------------------------
+
+* A compiler that produces a custom bytecode format
+
+* An interpreter for this bytecode
+
+* A large library of object types (the "object space")
+
+* A collection of extension modules
+
+
+The bytecode interpreter
+------------------------
+
+* A straightforward, recursive interpreter
+
+* Stack-based
+
+* Every call to a Python function makes a frame object
+
+* Then the interpreter is written as methods on this frame object
+
+
+The object space
+----------------
+
+* Implements all the built-in types
+
+* Structure more flexible than CPython's family of C functions
+
+* Very open to experimentation
+
+
+Separation of levels
+--------------------
+
+* Important: *all* objects that appear in the interpreted program are,
+ in the interpreter, instances of W_XxxObject.
+
+* Again, similar to CPython: an object in Python is implemented,
+ in the interpreter, as a C structure PyXxxObject.
+
+
+Example: smalllong
+------------------
+
+* Standard Python types: int (32/64-bit) and long
+ (integer of unlimited size)
+
+* In CPython, the type is directly linked to its (single) implementation in C.
+ In PyPy, it is not.
+
+* So we could easily add an implementation W_SmallLongObject for
+ integers that happen to fit in 64 bits
+
+* And there is also W_LongObject for the general case
+
+
+Example: smallint
+-----------------
+
+* *Tagged integers,* common in interpreters (but not in CPython)
+
+* Idea, in C terms: take the integer objects whose value fits in 31/63
+ bits, and encode them as odd-valued pseudo-pointers, instead of
+ pointers to separately-allocated integer objects
+
+* We did it in PyPy, but it's disabled now because it does not give
+ the expected performance gain
+
+
+Example: multidict
+------------------
+
+* Similarly, we have several implementations of dict
+
+* For the different typical usage patterns of dicts in Python
+
+* E.g. module dicts (containing all global names of a module),
+ class dicts, instance dicts, user dicts (typically containing
+ non-string keys)
+
+
+Example: mapdict
+----------------
+
+* An instance in Python uses a dictionary to store attributes::
+
+ >>> x = MyClass()
+ >>> x.a = 5
+ >>> x.__dict__
+ {'a': 5}
+ >>> x.__dict__ = {'b': 6}
+ >>> x.b
+ 6
+
+
+Example: mapdict
+----------------
+
+* An instance is thus two objects: a dict and a wrapper around it
+
+* Requires a lot of memory
+
+* This is different than Java, Smalltalk or C++, where the class
+ enforces the exact set of attributes of its instances
+
+* But it is like Self and JavaScript
+
+
+Maps
+----------------
+
+* We can reuse the technique introduced in Self: "maps"
+
+* The JavaScript engine V8 also uses them, calling them "hidden classes"
+
+* Idea: it is likely that a lot of instances of a given class will
+ have the same set of attributes
+
+* So we split the attributes into a per-instance part (just an array of
+ field values) and a shared part (giving the attribute names, and their
+ indices in the arrays of the individual instances).
+
+
+
+
+Architecture: the translation toolchain
+---------------------------------------------------------------------
+
+xxx
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--- (empty file)
+++ pypy/extradoc/talk/stanford-ee380-2011/ui/default/framing.css Mon Feb 28 00:34:15 2011
@@ -0,0 +1,25 @@
+/* This file has been placed in the public domain. */
+/* The following styles size, place, and layer the slide components.
+ Edit these if you want to change the overall slide layout.
+ The commented lines can be uncommented (and modified, if necessary)
+ to help you with the rearrangement process. */
+
+/* target = 1024x768 */
+
+div#header, div#footer, .slide {width: 100%; top: 0; left: 0;}
+div#header {position: fixed; top: 0; height: 3em; z-index: 1;}
+div#footer {top: auto; bottom: 0; height: 2.5em; z-index: 5;}
+.slide {top: 0; width: 92%; padding: 2.5em 4% 4%; z-index: 2;}
+div#controls {left: 50%; bottom: 0; width: 50%; z-index: 100;}
+div#controls form {position: absolute; bottom: 0; right: 0; width: 100%;
+ margin: 0;}
+#currentSlide {position: absolute; width: 10%; left: 45%; bottom: 1em;
+ z-index: 10;}
+html>body #currentSlide {position: fixed;}
+
+/*
+div#header {background: #FCC;}
+div#footer {background: #CCF;}
+div#controls {background: #BBD;}
+div#currentSlide {background: #FFC;}
+*/
Added: pypy/extradoc/talk/stanford-ee380-2011/ui/default/iepngfix.htc
==============================================================================
--- (empty file)
+++ pypy/extradoc/talk/stanford-ee380-2011/ui/default/iepngfix.htc Mon Feb 28 00:34:15 2011
@@ -0,0 +1,42 @@
+<public:component>
+<public:attach event="onpropertychange" onevent="doFix()" />
+
+<script>
+
+// IE5.5+ PNG Alpha Fix v1.0 by Angus Turnbull http://www.twinhelix.com
+// Free usage permitted as long as this notice remains intact.
+
+// This must be a path to a blank image. That's all the configuration you need here.
+var blankImg = 'ui/default/blank.gif';
+
+var f = 'DXImageTransform.Microsoft.AlphaImageLoader';
+
+function filt(s, m) {
+ if (filters[f]) {
+ filters[f].enabled = s ? true : false;
+ if (s) with (filters[f]) { src = s; sizingMethod = m }
+ } else if (s) style.filter = 'progid:'+f+'(src="'+s+'",sizingMethod="'+m+'")';
+}
+
+function doFix() {
+ if ((parseFloat(navigator.userAgent.match(/MSIE (\S+)/)[1]) < 5.5) ||
+ (event && !/(background|src)/.test(event.propertyName))) return;
+
+ if (tagName == 'IMG') {
+ if ((/\.png$/i).test(src)) {
+ filt(src, 'image'); // was 'scale'
+ src = blankImg;
+ } else if (src.indexOf(blankImg) < 0) filt();
+ } else if (style.backgroundImage) {
+ if (style.backgroundImage.match(/^url[("']+(.*\.png)[)"']+$/i)) {
+ var s = RegExp.$1;
+ style.backgroundImage = '';
+ filt(s, 'crop');
+ } else filt();
+ }
+}
+
+doFix();
+
+</script>
+</public:component>
\ No newline at end of file
Added: pypy/extradoc/talk/stanford-ee380-2011/ui/default/opera.css
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--- (empty file)
+++ pypy/extradoc/talk/stanford-ee380-2011/ui/default/opera.css Mon Feb 28 00:34:15 2011
@@ -0,0 +1,8 @@
+/* This file has been placed in the public domain. */
+/* DO NOT CHANGE THESE unless you really want to break Opera Show */
+.slide {
+ visibility: visible !important;
+ position: static !important;
+ page-break-before: always;
+}
+#slide0 {page-break-before: avoid;}
Added: pypy/extradoc/talk/stanford-ee380-2011/ui/default/outline.css
==============================================================================
--- (empty file)
+++ pypy/extradoc/talk/stanford-ee380-2011/ui/default/outline.css Mon Feb 28 00:34:15 2011
@@ -0,0 +1,16 @@
+/* This file has been placed in the public domain. */
+/* Don't change this unless you want the layout stuff to show up in the
+ outline view! */
+
+.layout div, #footer *, #controlForm * {display: none;}
+#footer, #controls, #controlForm, #navLinks, #toggle {
+ display: block; visibility: visible; margin: 0; padding: 0;}
+#toggle {float: right; padding: 0.5em;}
+html>body #toggle {position: fixed; top: 0; right: 0;}
+
+/* making the outline look pretty-ish */
+
+#slide0 h1, #slide0 h2, #slide0 h3, #slide0 h4 {border: none; margin: 0;}
+#toggle {border: 1px solid; border-width: 0 0 1px 1px; background: #FFF;}
+
+.outline {display: inline ! important;}
Added: pypy/extradoc/talk/stanford-ee380-2011/ui/default/pretty.css
==============================================================================
--- (empty file)
+++ pypy/extradoc/talk/stanford-ee380-2011/ui/default/pretty.css Mon Feb 28 00:34:15 2011
@@ -0,0 +1,121 @@
+/* This file has been placed in the public domain. */
+/* Following are the presentation styles -- edit away! */
+
+html, body {margin: 0; padding: 0;}
+body {background: #fff color: #222; font-size: 2em;}
+/* Replace the background style above with the style below (and again for
+ div#header) for a graphic: */
+/* background: white url(bodybg.gif) -16px 0 no-repeat; */
+:link, :visited {text-decoration: none; color: #00C;}
+#controls :active {color: #88A !important;}
+#controls :focus {outline: 1px dotted #227;}
+h1, h2, h3, h4 {font-size: 100%; margin: 0; padding: 0; font-weight: inherit;}
+
+blockquote {padding: 0 2em 0.5em; margin: 0 1.5em 0.5em;}
+blockquote p {margin: 0;}
+
+kbd {font-weight: bold; font-size: 1em;}
+sup {font-size: smaller; line-height: 1px;}
+
+.slide pre {padding: 0; margin-left: 0; margin-right: 0; font-size: 90%;}
+.slide ul ul li {list-style: square; }
+.slide img.leader {display: block; margin: 0 auto;}
+.slide tt {font-size: 90%;}
+
+div#header, div#footer {background: #005; color: #AAB; font-family: sans-serif;}
+/* background: #005 url(bodybg.gif) -16px 0 no-repeat; */
+div#footer {font-size: 0.5em; font-weight: bold; padding: 1em 0;}
+#footer h1 {display: block; padding: 0 1em;}
+#footer h2 {display: block; padding: 0.8em 1em 0;}
+
+.slide {font-size: 1.5em;}
+.slide li {font-size: 1.0em; padding-bottom: 0.2em;}
+.slide h1 {position: absolute; top: 0.45em; z-index: 1;
+ margin: 0; padding-left: 0.7em; white-space: nowrap;
+ font: bold 110% sans-serif; color: #DDE; background: #005;}
+.slide h2 {font: bold 120%/1em sans-serif; padding-top: 0.5em;}
+.slide h3 {font: bold 100% sans-serif; padding-top: 0.5em;}
+h1 abbr {font-variant: small-caps;}
+
+div#controls {position: absolute; left: 50%; bottom: 0;
+ width: 50%; text-align: right; font: bold 0.9em sans-serif;}
+html>body div#controls {position: fixed; padding: 0 0 1em 0; top: auto;}
+div#controls form {position: absolute; bottom: 0; right: 0; width: 100%;
+ margin: 0; padding: 0;}
+#controls #navLinks a {padding: 0; margin: 0 0.5em;
+ background: #005; border: none; color: #779; cursor: pointer;}
+#controls #navList {height: 1em;}
+#controls #navList #jumplist {position: absolute; bottom: 0; right: 0;
+ background: #DDD; color: #227;}
+
+#currentSlide {text-align: center; font-size: 0.5em; color: #449;
+ font-family: sans-serif; font-weight: bold;}
+
+#slide0 {padding-top: 1.5em}
+#slide0 h1 {position: static; margin: 1em 0 0; padding: 0; color: #000;
+ font: bold 2em sans-serif; white-space: normal; background: transparent;}
+#slide0 h2 {font: bold italic 1em sans-serif; margin: 0.25em;}
+#slide0 h3 {margin-top: 1.5em; font-size: 1.5em;}
+#slide0 h4 {margin-top: 0; font-size: 1em;}
+
+ul.urls {list-style: none; display: inline; margin: 0;}
+.urls li {display: inline; margin: 0;}
+.external {border-bottom: 1px dotted gray;}
+html>body .external {border-bottom: none;}
+.external:after {content: " \274F"; font-size: smaller; color: #77B;}
+
+.incremental, .incremental *, .incremental *:after {visibility: visible;
+ color: white; border: 0;}
+img.incremental {visibility: hidden;}
+.slide .current {color: green;}
+
+.slide-display {display: inline ! important;}
+
+.huge {font-family: sans-serif; font-weight: bold; font-size: 150%;}
+.big {font-family: sans-serif; font-weight: bold; font-size: 120%;}
+.small {font-size: 75%;}
+.tiny {font-size: 50%;}
+.huge tt, .big tt, .small tt, .tiny tt {font-size: 115%;}
+.huge pre, .big pre, .small pre, .tiny pre {font-size: 115%;}
+
+.maroon {color: maroon;}
+.red {color: red;}
+.magenta {color: magenta;}
+.fuchsia {color: fuchsia;}
+.pink {color: #FAA;}
+.orange {color: orange;}
+.yellow {color: yellow;}
+.lime {color: lime;}
+.green {color: green;}
+.olive {color: olive;}
+.teal {color: teal;}
+.cyan {color: cyan;}
+.aqua {color: aqua;}
+.blue {color: blue;}
+.navy {color: navy;}
+.purple {color: purple;}
+.black {color: black;}
+.gray {color: gray;}
+.silver {color: silver;}
+.white {color: white;}
+
+.left {text-align: left ! important;}
+.center {text-align: center ! important;}
+.right {text-align: right ! important;}
+
+.animation {position: relative; margin: 1em 0; padding: 0;}
+.animation img {position: absolute;}
+
+/* Docutils-specific overrides */
+
+.slide table.docinfo {margin: 1em 0 0.5em 2em;}
+
+pre.literal-block, pre.doctest-block {background-color: white;}
+
+tt.docutils {background-color: white;}
+
+/* diagnostics */
+/*
+li:after {content: " [" attr(class) "]"; color: #F88;}
+div:before {content: "[" attr(class) "]"; color: #F88;}
+*/
Added: pypy/extradoc/talk/stanford-ee380-2011/ui/default/print.css
==============================================================================
--- (empty file)
+++ pypy/extradoc/talk/stanford-ee380-2011/ui/default/print.css Mon Feb 28 00:34:15 2011
@@ -0,0 +1,24 @@
+/* This file has been placed in the public domain. */
+/* The following rule is necessary to have all slides appear in print!
+ DO NOT REMOVE IT! */
+.slide, ul {page-break-inside: avoid; visibility: visible !important;}
+h1 {page-break-after: avoid;}
+
+body {font-size: 12pt; background: white;}
+* {color: black;}
+
+#slide0 h1 {font-size: 200%; border: none; margin: 0.5em 0 0.25em;}
+#slide0 h3 {margin: 0; padding: 0;}
+#slide0 h4 {margin: 0 0 0.5em; padding: 0;}
+#slide0 {margin-bottom: 3em;}
+
+#header {display: none;}
+#footer h1 {margin: 0; border-bottom: 1px solid; color: gray;
+ font-style: italic;}
+#footer h2, #controls {display: none;}
+
+.print {display: inline ! important;}
+
+/* The following rule keeps the layout stuff out of print.
+ Remove at your own risk! */
+.layout, .layout * {display: none !important;}
Added: pypy/extradoc/talk/stanford-ee380-2011/ui/default/s5-core.css
==============================================================================
--- (empty file)
+++ pypy/extradoc/talk/stanford-ee380-2011/ui/default/s5-core.css Mon Feb 28 00:34:15 2011
@@ -0,0 +1,11 @@
+/* This file has been placed in the public domain. */
+/* Do not edit or override these styles!
+ The system will likely break if you do. */
+
+div#header, div#footer, div#controls, .slide {position: absolute;}
+html>body div#header, html>body div#footer,
+ html>body div#controls, html>body .slide {position: fixed;}
+.handout {display: none;}
+.layout {display: block;}
+.slide, .hideme, .incremental {visibility: hidden;}
+#slide0 {visibility: visible;}
Added: pypy/extradoc/talk/stanford-ee380-2011/ui/default/slides.css
==============================================================================
--- (empty file)
+++ pypy/extradoc/talk/stanford-ee380-2011/ui/default/slides.css Mon Feb 28 00:34:15 2011
@@ -0,0 +1,13 @@
+/* This file has been placed in the public domain. */
+
+/* required to make the slide show run at all */
+ at import url(s5-core.css);
+
+/* sets basic placement and size of slide components */
+ at import url(framing.css);
+
+/* styles that make the slides look good */
+ at import url(pretty.css);
+
+/* pypy override */
+ at import url(../py.css);
Added: pypy/extradoc/talk/stanford-ee380-2011/ui/default/slides.js
==============================================================================
--- (empty file)
+++ pypy/extradoc/talk/stanford-ee380-2011/ui/default/slides.js Mon Feb 28 00:34:15 2011
@@ -0,0 +1,558 @@
+// S5 v1.1 slides.js -- released into the Public Domain
+// Modified for Docutils (http://docutils.sf.net) by David Goodger
+//
+// Please see http://www.meyerweb.com/eric/tools/s5/credits.html for
+// information about all the wonderful and talented contributors to this code!
+
+var undef;
+var slideCSS = '';
+var snum = 0;
+var smax = 1;
+var slideIDs = new Array();
+var incpos = 0;
+var number = undef;
+var s5mode = true;
+var defaultView = 'slideshow';
+var controlVis = 'visible';
+
+var isIE = navigator.appName == 'Microsoft Internet Explorer' ? 1 : 0;
+var isOp = navigator.userAgent.indexOf('Opera') > -1 ? 1 : 0;
+var isGe = navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('Safari') < 1 ? 1 : 0;
+
+function hasClass(object, className) {
+ if (!object.className) return false;
+ return (object.className.search('(^|\\s)' + className + '(\\s|$)') != -1);
+}
+
+function hasValue(object, value) {
+ if (!object) return false;
+ return (object.search('(^|\\s)' + value + '(\\s|$)') != -1);
+}
+
+function removeClass(object,className) {
+ if (!object) return;
+ object.className = object.className.replace(new RegExp('(^|\\s)'+className+'(\\s|$)'), RegExp.$1+RegExp.$2);
+}
+
+function addClass(object,className) {
+ if (!object || hasClass(object, className)) return;
+ if (object.className) {
+ object.className += ' '+className;
+ } else {
+ object.className = className;
+ }
+}
+
+function GetElementsWithClassName(elementName,className) {
+ var allElements = document.getElementsByTagName(elementName);
+ var elemColl = new Array();
+ for (var i = 0; i< allElements.length; i++) {
+ if (hasClass(allElements[i], className)) {
+ elemColl[elemColl.length] = allElements[i];
+ }
+ }
+ return elemColl;
+}
+
+function isParentOrSelf(element, id) {
+ if (element == null || element.nodeName=='BODY') return false;
+ else if (element.id == id) return true;
+ else return isParentOrSelf(element.parentNode, id);
+}
+
+function nodeValue(node) {
+ var result = "";
+ if (node.nodeType == 1) {
+ var children = node.childNodes;
+ for (var i = 0; i < children.length; ++i) {
+ result += nodeValue(children[i]);
+ }
+ }
+ else if (node.nodeType == 3) {
+ result = node.nodeValue;
+ }
+ return(result);
+}
+
+function slideLabel() {
+ var slideColl = GetElementsWithClassName('*','slide');
+ var list = document.getElementById('jumplist');
+ smax = slideColl.length;
+ for (var n = 0; n < smax; n++) {
+ var obj = slideColl[n];
+
+ var did = 'slide' + n.toString();
+ if (obj.getAttribute('id')) {
+ slideIDs[n] = obj.getAttribute('id');
+ }
+ else {
+ obj.setAttribute('id',did);
+ slideIDs[n] = did;
+ }
+ if (isOp) continue;
+
+ var otext = '';
+ var menu = obj.firstChild;
+ if (!menu) continue; // to cope with empty slides
+ while (menu && menu.nodeType == 3) {
+ menu = menu.nextSibling;
+ }
+ if (!menu) continue; // to cope with slides with only text nodes
+
+ var menunodes = menu.childNodes;
+ for (var o = 0; o < menunodes.length; o++) {
+ otext += nodeValue(menunodes[o]);
+ }
+ list.options[list.length] = new Option(n + ' : ' + otext, n);
+ }
+}
+
+function currentSlide() {
+ var cs;
+ var footer_nodes;
+ var vis = 'visible';
+ if (document.getElementById) {
+ cs = document.getElementById('currentSlide');
+ footer_nodes = document.getElementById('footer').childNodes;
+ } else {
+ cs = document.currentSlide;
+ footer = document.footer.childNodes;
+ }
+ cs.innerHTML = '<span id="csHere">' + snum + '<\/span> ' +
+ '<span id="csSep">\/<\/span> ' +
+ '<span id="csTotal">' + (smax-1) + '<\/span>';
+ if (snum == 0) {
+ vis = 'hidden';
+ }
+ cs.style.visibility = vis;
+ for (var i = 0; i < footer_nodes.length; i++) {
+ if (footer_nodes[i].nodeType == 1) {
+ footer_nodes[i].style.visibility = vis;
+ }
+ }
+}
+
+function go(step) {
+ if (document.getElementById('slideProj').disabled || step == 0) return;
+ var jl = document.getElementById('jumplist');
+ var cid = slideIDs[snum];
+ var ce = document.getElementById(cid);
+ if (incrementals[snum].length > 0) {
+ for (var i = 0; i < incrementals[snum].length; i++) {
+ removeClass(incrementals[snum][i], 'current');
+ removeClass(incrementals[snum][i], 'incremental');
+ }
+ }
+ if (step != 'j') {
+ snum += step;
+ lmax = smax - 1;
+ if (snum > lmax) snum = lmax;
+ if (snum < 0) snum = 0;
+ } else
+ snum = parseInt(jl.value);
+ var nid = slideIDs[snum];
+ var ne = document.getElementById(nid);
+ if (!ne) {
+ ne = document.getElementById(slideIDs[0]);
+ snum = 0;
+ }
+ if (step < 0) {incpos = incrementals[snum].length} else {incpos = 0;}
+ if (incrementals[snum].length > 0 && incpos == 0) {
+ for (var i = 0; i < incrementals[snum].length; i++) {
+ if (hasClass(incrementals[snum][i], 'current'))
+ incpos = i + 1;
+ else
+ addClass(incrementals[snum][i], 'incremental');
+ }
+ }
+ if (incrementals[snum].length > 0 && incpos > 0)
+ addClass(incrementals[snum][incpos - 1], 'current');
+ ce.style.visibility = 'hidden';
+ ne.style.visibility = 'visible';
+ jl.selectedIndex = snum;
+ currentSlide();
+ number = 0;
+}
+
+function goTo(target) {
+ if (target >= smax || target == snum) return;
+ go(target - snum);
+}
+
+function subgo(step) {
+ if (step > 0) {
+ removeClass(incrementals[snum][incpos - 1],'current');
+ removeClass(incrementals[snum][incpos], 'incremental');
+ addClass(incrementals[snum][incpos],'current');
+ incpos++;
+ } else {
+ incpos--;
+ removeClass(incrementals[snum][incpos],'current');
+ addClass(incrementals[snum][incpos], 'incremental');
+ addClass(incrementals[snum][incpos - 1],'current');
+ }
+}
+
+function toggle() {
+ var slideColl = GetElementsWithClassName('*','slide');
+ var slides = document.getElementById('slideProj');
+ var outline = document.getElementById('outlineStyle');
+ if (!slides.disabled) {
+ slides.disabled = true;
+ outline.disabled = false;
+ s5mode = false;
+ fontSize('1em');
+ for (var n = 0; n < smax; n++) {
+ var slide = slideColl[n];
+ slide.style.visibility = 'visible';
+ }
+ } else {
+ slides.disabled = false;
+ outline.disabled = true;
+ s5mode = true;
+ fontScale();
+ for (var n = 0; n < smax; n++) {
+ var slide = slideColl[n];
+ slide.style.visibility = 'hidden';
+ }
+ slideColl[snum].style.visibility = 'visible';
+ }
+}
+
+function showHide(action) {
+ var obj = GetElementsWithClassName('*','hideme')[0];
+ switch (action) {
+ case 's': obj.style.visibility = 'visible'; break;
+ case 'h': obj.style.visibility = 'hidden'; break;
+ case 'k':
+ if (obj.style.visibility != 'visible') {
+ obj.style.visibility = 'visible';
+ } else {
+ obj.style.visibility = 'hidden';
+ }
+ break;
+ }
+}
+
+// 'keys' code adapted from MozPoint (http://mozpoint.mozdev.org/)
+function keys(key) {
+ if (!key) {
+ key = event;
+ key.which = key.keyCode;
+ }
+ if (key.which == 84) {
+ toggle();
+ return;
+ }
+ if (s5mode) {
+ switch (key.which) {
+ case 10: // return
+ case 13: // enter
+ if (window.event && isParentOrSelf(window.event.srcElement, 'controls')) return;
+ if (key.target && isParentOrSelf(key.target, 'controls')) return;
+ if(number != undef) {
+ goTo(number);
+ break;
+ }
+ case 32: // spacebar
+ case 34: // page down
+ case 39: // rightkey
+ case 40: // downkey
+ if(number != undef) {
+ go(number);
+ } else if (!incrementals[snum] || incpos >= incrementals[snum].length) {
+ go(1);
+ } else {
+ subgo(1);
+ }
+ break;
+ case 33: // page up
+ case 37: // leftkey
+ case 38: // upkey
+ if(number != undef) {
+ go(-1 * number);
+ } else if (!incrementals[snum] || incpos <= 0) {
+ go(-1);
+ } else {
+ subgo(-1);
+ }
+ break;
+ case 36: // home
+ goTo(0);
+ break;
+ case 35: // end
+ goTo(smax-1);
+ break;
+ case 67: // c
+ showHide('k');
+ break;
+ }
+ if (key.which < 48 || key.which > 57) {
+ number = undef;
+ } else {
+ if (window.event && isParentOrSelf(window.event.srcElement, 'controls')) return;
+ if (key.target && isParentOrSelf(key.target, 'controls')) return;
+ number = (((number != undef) ? number : 0) * 10) + (key.which - 48);
+ }
+ }
+ return false;
+}
+
+function clicker(e) {
+ number = undef;
+ var target;
+ if (window.event) {
+ target = window.event.srcElement;
+ e = window.event;
+ } else target = e.target;
+ if (target.href != null || hasValue(target.rel, 'external') || isParentOrSelf(target, 'controls') || isParentOrSelf(target,'embed') || isParentOrSelf(target, 'object')) return true;
+ if (!e.which || e.which == 1) {
+ if (!incrementals[snum] || incpos >= incrementals[snum].length) {
+ go(1);
+ } else {
+ subgo(1);
+ }
+ }
+}
+
+function findSlide(hash) {
+ var target = document.getElementById(hash);
+ if (target) {
+ for (var i = 0; i < slideIDs.length; i++) {
+ if (target.id == slideIDs[i]) return i;
+ }
+ }
+ return null;
+}
+
+function slideJump() {
+ if (window.location.hash == null || window.location.hash == '') {
+ currentSlide();
+ return;
+ }
+ if (window.location.hash == null) return;
+ var dest = null;
+ dest = findSlide(window.location.hash.slice(1));
+ if (dest == null) {
+ dest = 0;
+ }
+ go(dest - snum);
+}
+
+function fixLinks() {
+ var thisUri = window.location.href;
+ thisUri = thisUri.slice(0, thisUri.length - window.location.hash.length);
+ var aelements = document.getElementsByTagName('A');
+ for (var i = 0; i < aelements.length; i++) {
+ var a = aelements[i].href;
+ var slideID = a.match('\#.+');
+ if ((slideID) && (slideID[0].slice(0,1) == '#')) {
+ var dest = findSlide(slideID[0].slice(1));
+ if (dest != null) {
+ if (aelements[i].addEventListener) {
+ aelements[i].addEventListener("click", new Function("e",
+ "if (document.getElementById('slideProj').disabled) return;" +
+ "go("+dest+" - snum); " +
+ "if (e.preventDefault) e.preventDefault();"), true);
+ } else if (aelements[i].attachEvent) {
+ aelements[i].attachEvent("onclick", new Function("",
+ "if (document.getElementById('slideProj').disabled) return;" +
+ "go("+dest+" - snum); " +
+ "event.returnValue = false;"));
+ }
+ }
+ }
+ }
+}
+
+function externalLinks() {
+ if (!document.getElementsByTagName) return;
+ var anchors = document.getElementsByTagName('a');
+ for (var i=0; i<anchors.length; i++) {
+ var anchor = anchors[i];
+ if (anchor.getAttribute('href') && hasValue(anchor.rel, 'external')) {
+ anchor.target = '_blank';
+ addClass(anchor,'external');
+ }
+ }
+}
+
+function createControls() {
+ var controlsDiv = document.getElementById("controls");
+ if (!controlsDiv) return;
+ var hider = ' onmouseover="showHide(\'s\');" onmouseout="showHide(\'h\');"';
+ var hideDiv, hideList = '';
+ if (controlVis == 'hidden') {
+ hideDiv = hider;
+ } else {
+ hideList = hider;
+ }
+ controlsDiv.innerHTML = '<form action="#" id="controlForm"' + hideDiv + '>' +
+ '<div id="navLinks">' +
+ '<a accesskey="t" id="toggle" href="javascript:toggle();">Ø<\/a>' +
+ '<a accesskey="z" id="prev" href="javascript:go(-1);">«<\/a>' +
+ '<a accesskey="x" id="next" href="javascript:go(1);">»<\/a>' +
+ '<div id="navList"' + hideList + '><select id="jumplist" onchange="go(\'j\');"><\/select><\/div>' +
+ '<\/div><\/form>';
+ if (controlVis == 'hidden') {
+ var hidden = document.getElementById('navLinks');
+ } else {
+ var hidden = document.getElementById('jumplist');
+ }
+ addClass(hidden,'hideme');
+}
+
+function fontScale() { // causes layout problems in FireFox that get fixed if browser's Reload is used; same may be true of other Gecko-based browsers
+ if (!s5mode) return false;
+ var vScale = 22; // both yield 32 (after rounding) at 1024x768
+ var hScale = 32; // perhaps should auto-calculate based on theme's declared value?
+ if (window.innerHeight) {
+ var vSize = window.innerHeight;
+ var hSize = window.innerWidth;
+ } else if (document.documentElement.clientHeight) {
+ var vSize = document.documentElement.clientHeight;
+ var hSize = document.documentElement.clientWidth;
+ } else if (document.body.clientHeight) {
+ var vSize = document.body.clientHeight;
+ var hSize = document.body.clientWidth;
+ } else {
+ var vSize = 700; // assuming 1024x768, minus chrome and such
+ var hSize = 1024; // these do not account for kiosk mode or Opera Show
+ }
+ var newSize = Math.min(Math.round(vSize/vScale),Math.round(hSize/hScale));
+ fontSize(newSize + 'px');
+ if (isGe) { // hack to counter incremental reflow bugs
+ var obj = document.getElementsByTagName('body')[0];
+ obj.style.display = 'none';
+ obj.style.display = 'block';
+ }
+}
+
+function fontSize(value) {
+ if (!(s5ss = document.getElementById('s5ss'))) {
+ if (!isIE) {
+ document.getElementsByTagName('head')[0].appendChild(s5ss = document.createElement('style'));
+ s5ss.setAttribute('media','screen, projection');
+ s5ss.setAttribute('id','s5ss');
+ } else {
+ document.createStyleSheet();
+ document.s5ss = document.styleSheets[document.styleSheets.length - 1];
+ }
+ }
+ if (!isIE) {
+ while (s5ss.lastChild) s5ss.removeChild(s5ss.lastChild);
+ s5ss.appendChild(document.createTextNode('body {font-size: ' + value + ' !important;}'));
+ } else {
+ document.s5ss.addRule('body','font-size: ' + value + ' !important;');
+ }
+}
+
+function notOperaFix() {
+ slideCSS = document.getElementById('slideProj').href;
+ var slides = document.getElementById('slideProj');
+ var outline = document.getElementById('outlineStyle');
+ slides.setAttribute('media','screen');
+ outline.disabled = true;
+ if (isGe) {
+ slides.setAttribute('href','null'); // Gecko fix
+ slides.setAttribute('href',slideCSS); // Gecko fix
+ }
+ if (isIE && document.styleSheets && document.styleSheets[0]) {
+ document.styleSheets[0].addRule('img', 'behavior: url(ui/default/iepngfix.htc)');
+ document.styleSheets[0].addRule('div', 'behavior: url(ui/default/iepngfix.htc)');
+ document.styleSheets[0].addRule('.slide', 'behavior: url(ui/default/iepngfix.htc)');
+ }
+}
+
+function getIncrementals(obj) {
+ var incrementals = new Array();
+ if (!obj)
+ return incrementals;
+ var children = obj.childNodes;
+ for (var i = 0; i < children.length; i++) {
+ var child = children[i];
+ if (hasClass(child, 'incremental')) {
+ if (child.nodeName == 'OL' || child.nodeName == 'UL') {
+ removeClass(child, 'incremental');
+ for (var j = 0; j < child.childNodes.length; j++) {
+ if (child.childNodes[j].nodeType == 1) {
+ addClass(child.childNodes[j], 'incremental');
+ }
+ }
+ } else {
+ incrementals[incrementals.length] = child;
+ removeClass(child,'incremental');
+ }
+ }
+ if (hasClass(child, 'show-first')) {
+ if (child.nodeName == 'OL' || child.nodeName == 'UL') {
+ removeClass(child, 'show-first');
+ if (child.childNodes[isGe].nodeType == 1) {
+ removeClass(child.childNodes[isGe], 'incremental');
+ }
+ } else {
+ incrementals[incrementals.length] = child;
+ }
+ }
+ incrementals = incrementals.concat(getIncrementals(child));
+ }
+ return incrementals;
+}
+
+function createIncrementals() {
+ var incrementals = new Array();
+ for (var i = 0; i < smax; i++) {
+ incrementals[i] = getIncrementals(document.getElementById(slideIDs[i]));
+ }
+ return incrementals;
+}
+
+function defaultCheck() {
+ var allMetas = document.getElementsByTagName('meta');
+ for (var i = 0; i< allMetas.length; i++) {
+ if (allMetas[i].name == 'defaultView') {
+ defaultView = allMetas[i].content;
+ }
+ if (allMetas[i].name == 'controlVis') {
+ controlVis = allMetas[i].content;
+ }
+ }
+}
+
+// Key trap fix, new function body for trap()
+function trap(e) {
+ if (!e) {
+ e = event;
+ e.which = e.keyCode;
+ }
+ try {
+ modifierKey = e.ctrlKey || e.altKey || e.metaKey;
+ }
+ catch(e) {
+ modifierKey = false;
+ }
+ return modifierKey || e.which == 0;
+}
+
+function startup() {
+ defaultCheck();
+ if (!isOp) createControls();
+ slideLabel();
+ fixLinks();
+ externalLinks();
+ fontScale();
+ if (!isOp) {
+ notOperaFix();
+ incrementals = createIncrementals();
+ slideJump();
+ if (defaultView == 'outline') {
+ toggle();
+ }
+ document.onkeyup = keys;
+ document.onkeypress = trap;
+ document.onclick = clicker;
+ }
+}
+
+window.onload = startup;
+window.onresize = function(){setTimeout('fontScale()', 50);}
Added: pypy/extradoc/talk/stanford-ee380-2011/ui/py-web.png
==============================================================================
Binary file. No diff available.
Added: pypy/extradoc/talk/stanford-ee380-2011/ui/py.css
==============================================================================
--- (empty file)
+++ pypy/extradoc/talk/stanford-ee380-2011/ui/py.css Mon Feb 28 00:34:15 2011
@@ -0,0 +1,77 @@
+body, h1, h2, h3, h4, td, p, div {
+ font-family: sans-serif;
+/* font-size: 1em; */
+}
+
+div {
+ font-size: 0.7em;
+}
+
+#slide0 h1.title {
+ text-align: center;
+ font-family: sans-serif;
+}
+
+div#header, div#footer, div#controls {
+ background-color: white;
+}
+
+div#header {
+ background-image: url("py-web.png");
+ background-repeat: no-repeat;
+ margin: 3px;
+ height: 120px;
+ border-bottom: 1px solid black;
+}
+
+.slide h1 {
+ background-color: white;
+ margin-left: 180px;
+ padding-left: 0px;
+ color: black;
+ font-size: 1.2em;
+}
+
+div#footer {
+ padding: 3px;
+ height: 4em;
+ border-top: 1px solid black;
+}
+
+div#footer h1, div#footer h2, div#footer h3 {
+ font-family: "Times New Roman";
+ font-style: italic;
+ padding: 0px;
+}
+
+div#footer h1 {
+ font-size: 2em;
+}
+
+#controls {
+ border: 1px solid red;
+ background-color: red;
+ width: 100px;
+ visibility: hidden;
+}
+
+#controls #controlForm {
+ visibility: visible;
+}
+
+#navList, #navLinks {
+ background-color: transparent;
+}
+
+#navLinks a#toggle, #navLinks a#prev, #navLinks a#next {
+ background-color: transparent;
+}
+
+/* some hacks to fix whitespace between list items */
+
+li, li p {
+ line-height: 1.2em;
+/* font-size: 1em; */
+ margin: 0px;
+ margin-left: 30px;
+}
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