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<html>
<head><title>PushScript Demo Page</title></head>
<style>
body {
font-family: Arial;
font-size: 14px;
background: #fff7ea;
padding: 0px;
margin: 0px;
}
#container {
background: #ffffff;
border: 1px solid #c1c1c1;
width: 750px;
margin: auto;
padding: 0px 15px 0px 15px;
-moz-border-radius-bottomleft: 12px;
-moz-border-radius-bottomright: 12px;
-webkit-border-bottom-left-radius: 12px;
-webkit-border-bottom-right-radius: 12px;
}
#results {
border: 1px dashed;
margin: 10px;
padding: 10px;
background-color: #CCCCCC;
font-family: monospace;
}
table.instructions {
border: 1px dashed;
margin: 2px;
font-family: monospace;
font-size: 9px;
table-layout: fixed;
}
table.instructions td {
vertical-align: text-top;
}
</style>
<script language="JavaScript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.1/jquery.min.js"></script>
<script language="JavaScript" src="push.js"></script>
<script type="text/javascript">
function runPushProgramFromForm() {
var result = pushRunString( $('#pushProgram').val() );
$('#results').html( result );
}
function processJSONResponse(data) {
$('#pushProgram').val(data.program);
runPushProgramFromForm();
}
function runPushProgramFromServer() {
$.ajax( { url: 'http://spiderland.org/PushScript/randompush.cgi', dataType: 'jsonp', success: processJSONResponse } );
}
</script>
<body>
<div id="container">
<p>
<center><h3>PushScript: A Subset-Of-Push Interpreter in JavaScript</h3>
The <a href="http://hampshire.edu/lspector/push.html">Push</a> language in a web browser.
</center>
</p>
<p><b>Download PushScript 0.9:</b></p
<ul>
<li><a href="push.js">push.js</a>: PushScript source code
<li><a href="README.txt">README.txt</a>: README file for the 0.9 release
</ul>
<p>
This is a demo of a subset-of-<a href="http://hampshire.edu/lspector/push.html">Push</a> interpreter written in JavaScript. This allows Push programs to be executed in the client-side web browser when a user views a webpage.
</p>
<p>
Most, but not all, standard Push instructions are implemented in PushScript. Currently implemented instructions:
</p>
<table class="instructions" align="center">
<tr>
<tr>
<td width="16%">Float</td>
<td width="16%">Integer</td>
<td width="16%">Boolean</td>
<td width="16%">Code</td>
<td width="16%">Exec</td>
<td width="16%">Name</td>
</tr>
<tr>
<td width="16%">
<li>FLOAT.+
<li>FLOAT.-
<li>FLOAT./
<li>FLOAT.*
<li>FLOAT.%
<li>FLOAT.>
<li>FLOAT.<
<li>FLOAT.=
<li>FLOAT.COS
<li>FLOAT.DEFINE
<li>FLOAT.DUP
<li>FLOAT.FLUSH
<li>FLOAT.FROMBOOLEAN
<li>FLOAT.FROMINTEGER
<li>FLOAT.MAX
<li>FLOAT.MIN
<li>FLOAT.POP
<li>FLOAT.RAND
<li>FLOAT.ROT
<li>FLOAT.SHOVE
<li>FLOAT.SIN
<li>FLOAT.STACKDEPTH
<li>FLOAT.SWAP
<li>FLOAT.TAN
<li>FLOAT.YANK
<li>FLOAT.YANKDUP
<li>float constants
</td>
<td width="16%">
<li>INTEGER.+
<li>INTEGER.-
<li>INTEGER./
<li>INTEGER.*
<li>INTEGER.%
<li>INTEGER.>
<li>INTEGER.<
<li>INTEGER.=
<li>INTEGER.DEFINE
<li>INTEGER.DUP
<li>INTEGER.FLUSH
<li>INTEGER.FROMBOOLEAN
<li>INTEGER.FROMFLOAT
<li>INTEGER.MAX
<li>INTEGER.MIN
<li>INTEGER.POP
<li>INTEGER.RAND
<li>INTEGER.ROT
<li>INTEGER.SHOVE
<li>INTEGER.STACKDEPTH
<li>INTEGER.SWAP
<li>INTEGER.YANK
<li>INTEGER.YANKDUP
<li>integer constants
</td>
<td width="16%">
<li>BOOLEAN.=
<li>BOOLEAN.AND
<li>BOOLEAN.DEFINE
<li>BOOLEAN.DUP
<li>BOOLEAN.FLUSH
<li>BOOLEAN.FROMFLOAT
<li>BOOLEAN.FROMINTEGER
<li>BOOLEAN.NOT
<li>BOOLEAN.OR
<li>BOOLEAN.POP
<li>BOOLEAN.RAND
<li>BOOLEAN.ROT
<li>BOOLEAN.SHOVE
<li>BOOLEAN.STACKDEPTH
<li>BOOLEAN.SWAP
<li>BOOLEAN.YANK
<li>BOOLEAN.YANKDUP
<li>boolean constants ("TRUE"/"FALSE")
</td>
<td width="16%">
<li>CODE.=
<li>CODE.ATOM
<li>CODE.CAR
<li>CODE.CDR
<li>CODE.CONS
<li>CODE.CONTAINS
<li>CODE.DEFINE
<li>CODE.DO
<li>CODE.DO*
<li>CODE.DO*COUNT
<li>CODE.DO*RANGE
<li>CODE.DO*TIMES
<li>CODE.DUP
<li>CODE.FLUSH
<li>CODE.IF
<li>CODE.LENGTH
<li>CODE.LIST
<li>CODE.NOOP
<li>CODE.NTH
<li>CODE.NULL
<li>CODE.SHOVE
<li>CODE.POP
<li>CODE.QUOTE
<li>CODE.ROT
<li>CODE.SHOVE
<li>CODE.STACKDEPTH
<li>CODE.SWAP
<li>CODE.YANK
<li>CODE.YANKDUP
</td>
<td width="16%">
<li>EXEC.=
<li>EXEC.DEFINE
<li>EXEC.DO*COUNT
<li>EXEC.DO*RANGE
<li>EXEC.DO*TIMES
<li>EXEC.DUP
<li>EXEC.FLUSH
<li>EXEC.IF
<li>EXEC.K
<li>EXEC.POP
<li>EXEC.ROT
<li>EXEC.S
<li>EXEC.SHOVE
<li>EXEC.STACKDEPTH
<li>EXEC.SWAP
<li>EXEC.Y
<li>EXEC.YANK
<li>EXEC.YANKDUP
</td>
<td width="16%">
<li>NAME.=
<li>NAME.DUP
<li>NAME.FLUSH
<li>NAME.POP
<li>NAME.RAND
<li>NAME.ROT
<li>NAME.SHOVE
<li>NAME.STACKDEPTH
<li>NAME.SWAP
<li>NAME.YANK
<li>NAME.YANKDUP
</td>
</table>
</p>
</p>
<p>
Type in a Push program below:
</p>
<input type="text" id="pushProgram" value="( ( 5.0 4.0 FLOAT./ 7.0 FLOAT.+ ) ( 2 3 INTEGER.> ) )" size=80>
<input type="submit" value="Run Push Program" onclick="return runPushProgramFromForm()">
<p>
We can dynamically load a Push program from a server, execute it in a web-browser and submit the results back to the server. Note that this does not require any actual user interaction and can be done continuously while a user views a webpage.
</p>
<input type="submit" value="Run Random Push Program From Server" onclick="return runPushProgramFromServer()">
<div id="results">
</div>
PushScript written by <a href="http://www.artificial.com">jon klein</a>.<br>
Push language designed by <a href="http://hampshire.edu/lspector">Lee Spector</a>.
</div>
</body>